CN113915367A - Novel low-leakage ball valve - Google Patents
Novel low-leakage ball valve Download PDFInfo
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- CN113915367A CN113915367A CN202111121656.5A CN202111121656A CN113915367A CN 113915367 A CN113915367 A CN 113915367A CN 202111121656 A CN202111121656 A CN 202111121656A CN 113915367 A CN113915367 A CN 113915367A
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- 239000002699 waste material Substances 0.000 claims abstract description 52
- 238000012856 packing Methods 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 238000003860 storage Methods 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 14
- 239000010439 graphite Substances 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 6
- 230000036316 preload Effects 0.000 abstract 1
- 238000003825 pressing Methods 0.000 description 16
- 239000002245 particle Substances 0.000 description 15
- 239000007788 liquid Substances 0.000 description 13
- 241000283216 Phocidae Species 0.000 description 9
- 238000013461 design Methods 0.000 description 7
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- 238000005516 engineering process Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
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- 238000012423 maintenance Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
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- 230000000979 retarding effect Effects 0.000 description 3
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- 230000004048 modification Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 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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- 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
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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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
- F16K5/0694—Spindle sealings
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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
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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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
本发明公开了一种新型低泄漏球阀，包括阀帽，所述阀帽一侧外表面活动连接有阀体，所述阀帽内部开设有废料储存槽，所述废料储存槽内部且靠近上端口位置处开设有缓速斜坡，所述废料储存槽内部底面开设有清理孔，所述清理孔内部活动安装有密封旋钮，所述密封旋钮表面活动套接有橡胶密封垫圈，所述阀体上表面固定安装有连接底座，所述连接底座上表面活动连接有填料函，所述阀体内部活动安装有球体，所述球体两侧且位于阀体内部固定安装有阀座，所述球体上表面活动安装有阀杆。通过设置的填料函与填料压板相互配合，可以为填料提供持续稳定的预紧力，有效的补偿温度、压力波动以及无油石墨填料的磨损，阀杆密封性能长时间保持良好的状态。
The invention discloses a novel low-leakage ball valve, comprising a bonnet, a valve body is movably connected to the outer surface of one side of the bonnet, a waste storage tank is opened inside the bonnet, and the waste storage tank is inside and close to an upper port There is a slow ramp at the position, a cleaning hole is opened on the bottom surface of the waste storage tank, a sealing knob is movably installed inside the cleaning hole, a rubber sealing gasket is movably sleeved on the surface of the sealing knob, and the upper surface of the valve body is A connection base is fixedly installed, a stuffing box is movably connected to the upper surface of the connection base, a sphere is movably installed inside the valve body, a valve seat is fixedly installed on both sides of the sphere and inside the valve body, and the upper surface of the sphere is movable A valve stem is installed. Through the cooperation of the set stuffing box and the packing pressure plate, a continuous and stable preload force can be provided for the packing, which can effectively compensate the temperature, pressure fluctuation and the wear of the oil-free graphite packing, and the sealing performance of the valve stem can maintain a good state for a long time.
Description
Technical Field
The invention belongs to the technical field of ball valves, and particularly relates to a novel low-leakage ball valve.
Background
Ball valves are appeared in the 50 th of the 20 th century, and along with the rapid development of the ball valves in science and technology, the continuous improvement of production processes and product structures, the ball valves are rapidly developed into main valves in short 40 years. The use of ball valves is increasing year by year in countries with industrially developed western industries. In China, the ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, and plays a significant role in national economy. The rotary plug has the action of rotating 90 degrees, the plug body is a ball body, a circular through hole or a channel passes through the axis of the plug body, the ball valve is a stop valve in the fields of maritime work and ships, and the standard GB/T21465-2008 < valve term > defines that: the opening and closing piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The hard seal V-shaped ball valve can also be used for regulating and controlling fluid, wherein a V-shaped ball core of the hard seal V-shaped ball valve and a metal valve seat of the build-up welding hard alloy have strong shearing force, and the hard seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like. The multi-way ball valve can flexibly control the confluence, the diversion and the switching of the flow direction of the medium on the pipeline, and can close any channel to connect the other two channels. The valve of this type should be generally installed horizontally in the pipeline. Ball valve classification: pneumatic ball valves, electric ball valves, manual ball valves.
For example, the chinese patent discloses a low leakage ball valve with publication number CN105221830B, which comprises a valve body, an end cap, a valve rod, a ball, a valve seat and a gland, and adopts a new triple sealing structure of the valve rod: the valve rod lower part is sealed, the lower part is sealed in the valve rod, upper portion is sealed in the valve rod to and the end cover seal structure of valve body and end cover department, thereby have following advantage: the problem of the easy hourglass that takes place to exist among the current ball valve is solved, the sealed of 3 departments of valve rod and the sealed of valve body and end cover department have been strengthened, prevent that the medium from taking place to leak from valve rod department and valve body and end cover department, especially when temperature and pressure change, the danger of leaking outside taking place for the ball valve has been avoided, the security and the reliability of ball valve have been guaranteed, the life of ball valve has been prolonged, but it still has valve rod sealing device life relatively poor in the use, the sealed effect is poor under the inside low-pressure difference of valve body, when O type circle used, a large amount of switches can cause O type circle ageing, cause the problem that sealed effect weakens.
Disclosure of Invention
The invention aims to provide a novel low-leakage ball valve, and the novel low-leakage ball valve is used for solving the problems that in the use process of the conventional low-leakage ball valve in the background technology, because a valve rod sealing device is poor in service life, the sealing effect is poor under low pressure difference inside a valve body, and when an O-shaped ring is used, a large number of switches can cause aging of the O-shaped ring, so that the sealing effect is weakened.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel low leakage ball valve, includes the valve cap, valve cap one side surface swing joint has the valve body, the inside waste material hold up tank of having seted up of valve cap, the inside slow slope that has just been close to upper end mouth position department of waste material hold up tank has been seted up the clearance hole, clearance hole inside movable mounting has sealed knob, rubber seal ring has been cup jointed in the activity of sealed knob surface, fixed surface installs the connection base on the valve body, it has the packing box to connect base upper surface swing joint, the inside movable mounting of valve body has the spheroid, the spheroid both sides just are located the inside fixed mounting of valve body has the disk seat, surface movable mounting has the valve rod on the spheroid.
It is specific, fix the stuffing box in the valve body top through connecting the base, when liquid or gas pass through the valve cap, inside if be mingled with certain foreign particle, because gravity can be close to below and valve cap inner wall looks friction, when passing through waste material hold up tank, because the slowdown slope that waste material hold up tank set up can guide partly waste material granule to get into inside the waste material hold up tank, and the inside trilateral right angle side of waste material hold up tank, can obstruct liquid or gaseous circulation, inside liquid or gaseous speed can slow down greatly, waste material granule can deposit and get up at the inside storage of waste material hold up tank, prevent that it from passing through the spheroid when, wearing and tearing spheroid surface, cause the reduction of leakproofness, the sealed knob of rotatory setting can take out the clearance hole with it, can emit the waste material granule that the waste material hold up tank inside is gathered through the clearance hole.
Preferably, the connecting hole has been seted up to valve cap one side surface, screw thread fixing hole has been seted up to valve cap opposite side surface, the inside movable mounting in screw thread fixing hole has fixed screw, the valve cap passes through fixed screw interconnect with the valve body.
The valve cap and the valve body are directly connected through the rotary fixing screws, and later maintenance and maintenance are facilitated.
Preferably, the outer surface of one side of the valve body is provided with a valve body connecting hole, and the other side of the valve body is movably provided with a graphite ring.
The valve body connecting hole is convenient for an external pipeline to be connected with the valve body, the graphite ring is made of an oil-free graphite material, a gap between the valve body and the valve cap can be sealed, and leakage is avoided.
Preferably, the upper end face of the stuffing box is movably provided with a stuffing pressing sleeve, the upper end face of the stuffing pressing sleeve is movably provided with a stuffing pressing plate, the upper surfaces of the stuffing pressing plate and the stuffing box are respectively provided with a pressing plate fixing threaded hole, the inside of the pressing plate fixing threaded hole is movably provided with a fixing bolt, the stuffing pressing plate is fixed above the stuffing box through the fixing bolt, and the inside of the stuffing box is filled with oil-free graphite stuffing.
The novel valve rod sealing device has the advantages that the novel valve rod sealing device is simple in structure, convenient to use, and capable of achieving long service life, the packing pressing plate can be driven to move downwards through the rotary fixing bolt, the packing pressing plate can be driven to move downwards to drive the packing pressing sleeve to move downwards, the packing pressing sleeve can squeeze oil-free graphite packing filled in the packing box to move downwards, continuous and stable pretightening force is provided for packing, effective compensation temperature, pressure fluctuation and abrasion of the oil-free graphite packing are achieved, and long-life valve rod sealing performance is guaranteed.
Preferably, the stuffing box is internally and movably provided with a valve rod, the upper end face of the valve rod is fixedly provided with a driving actuator, the surface of the valve rod is sleeved with a first bearing sleeve, the upper end face of the first bearing sleeve is movably provided with a bearing, the upper end face of the bearing is movably connected with a second bearing sleeve, the upper end face of the second bearing sleeve is movably provided with another bearing, and the upper end face of the other bearing is movably connected with a third bearing sleeve.
Specifically, through unique duplex bearing design and hardening technology processing, can stabilize the moment of torsion of valve rod, the drive executor of setting is convenient for the cooperation to use valve drive devices such as manual, pneumatics, electronic to drive the valve rod rotatory, and the valve rod rotation can drive the spheroid rotatory to close or open the ball valve.
Preferably, the upper surface and the lower surface of the ball body are both provided with a connecting convex column, the upper end surface of the connecting convex column positioned on the upper surface of the ball body is provided with a connecting groove, the connecting groove is matched with the valve rod, and the upper surface and the lower surface of the ball body are movably provided with sliding blocks.
Concretely, through connecting groove and valve rod mutually supporting, the valve rod rotation can drive the spheroid rotatory, and the slider can guarantee that the valve rod does not receive radial force, and the design of protection valve rod, the switch is more reliable.
Preferably, the ball material is cemented carbide.
Specifically, by adopting the hard alloy material, the sphere can be ensured not to have metal adhesion under the working conditions of high temperature, high pressure and pure gas, and has high bonding strength with the substrate and difficult falling.
Preferably, two sealing rings are movably sleeved on the outer surface of the valve seat, and two disc springs are sleeved on one side of each sealing ring and located on the outer surface of the valve seat.
It is specific, guarantee zero leakage between disk seat and the valve body through two wedge type self sealss packing structure, the sealing ring material is the oilless graphite, and sealed reliable two-way seal that accords with API598/ASMEB16.104VI level and above requirement adopts the disk seat to seal, avoids the firing of the O type circle, assembly damage, washing damage and ageing, and the dish spring can guarantee that the good high temperature performance of sealing is good under the low-pressure differential, and the sealed face wearing and tearing of compensation simultaneously.
Compared with the prior art, the invention has the beneficial effects that:
1. the packing box and the packing pressing plate that set up mutually support, can drive the packing pressing plate downstream through rotatory fixing bolt, and the packing pressing plate downstream can drive the packing and press the cover downstream, and the packing is pressed the cover downstream and can be extruded the inside oilless graphite that fills of packing box and is packed, for packing provide continuous stable pretightning force, effectual compensation temperature, the wearing and tearing of pressure fluctuation and oilless graphite are packed, ensure long-life valve rod sealing performance.
2. Through unique duplex bearing design, can stabilize the moment of torsion of valve rod, the drive executor of setting is convenient for the cooperation to use valve drive devices such as manual, pneumatics, electronic to drive the valve rod rotatory, and the valve rod rotation can drive the spheroid rotatory to close or open the ball valve.
3. The double sliding blocks or other special designs are adopted to ensure that the valve rod is not stressed by radial force, and meanwhile, the design of the dynamic spring bearing packing ensures that the external leakage meets the standards of ISO15848, EPA and TA-LUFT.
4. Except for the main sealing surfaces of the valve ball and the valve seat, all other seals adopt oil-free anti-stripping graphite, do not adopt a 0-shaped ring structure, and completely avoid various faults possibly caused by aging of the 0-shaped ring.
5. Through the mutual matching of the waste storage tank and the cleaning hole, when liquid or gas passes through the valve cap, if certain impurity particles are mixed in the valve cap, the valve cap can be close to the lower part and rub against the inner wall of the valve cap due to gravity, when the waste material is passed through the waste material storage groove, because the retarding slope arranged on the waste material storage groove can guide a part of waste material particles into the waste material storage groove, and three sides inside the waste storage tank are right-angle sides which can obstruct the circulation of liquid or gas, the speed of the liquid or gas inside the waste storage tank can be greatly reduced, waste particles can be deposited in the waste storage tank for storage, the sealing knob arranged in a rotating way can be taken out of the cleaning hole, the waste particles accumulated in the waste storage tank can be discharged through the cleaning hole, the particles included in the liquid or gas can be partially collected, and the problem that the surface of the ball is abraded when the particles pass through the ball, so that the sealing performance is reduced is solved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is a schematic view of a half-section of the present invention;
FIG. 5 is an enlarged fragmentary view of the valve stem of the present invention;
FIG. 6 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;
FIG. 7 is an enlarged view of the invention at B in FIG. 3;
fig. 8 is an enlarged view of the invention at C in fig. 3.
In the figure: 1. a bonnet; 101. connecting holes; 102. a threaded fixing hole; 103. fixing screws; 2. a waste storage tank; 201. a retarding slope; 202. cleaning the holes; 203. sealing the knob; 204. a rubber sealing gasket; 3. a valve body; 301. a valve body connecting hole; 302. a graphite ring; 303. connecting a base; 4. a stuffing box; 401. a packing press plate; 402. a valve stem; 403. driving an actuator; 404. a bearing; 405. a first bearing sleeve; 406. a second bearing sleeve; 407. a third bearing sleeve; 408. oil-free graphite packing; 409. the pressing plate is fixed with the threaded hole; 4010. fixing the bolt; 4011. pressing and sleeving the filler; 5. a sphere; 502. connecting the convex columns; 503. a connecting groove; 504. a slider; 6. a valve seat; 601. a seal ring; 602. a disc spring.
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. 1-8, the present invention provides a technical solution: the utility model provides a novel low leakage ball valve, including valve cap 1, 1 one side surface swing joint of valve cap has valve body 3, 1 inside waste material hold up tank 2 of having seted up of valve cap, 2 inside and being close to last port position department in waste material hold up tank have seted up slowdown slope 201, clearance hole 202 has been seted up to 2 inside bottom surfaces in waste material hold up tank, the inside movable mounting in clearance hole 202 has sealed knob 203, seal knob 203 surface activity has cup jointed rubber seal ring 204, fixed surface installs on the valve body 3 and connects base 303, surface swing joint has packing box 4 on connecting base 303, 3 inside movable mounting of valve body has spheroid 5, 5 both sides of spheroid just are located 3 inside fixed mounting of valve body and have disk seat 6, surface movable mounting has valve rod 402 on the spheroid 5, valve body connecting hole 301 has been seted up to 3 one side surfaces of valve body, 3 opposite side movable mounting of valve body has graphite ring 302.
In this embodiment, the stuffing box 4 is fixed above the valve body 3 by the connection seat 303, and when liquid or gas passes through the bonnet 1, if certain impurity particles are included in the valve cap, the valve cap 1 can rub against the inner wall of the valve cap close to the lower part due to gravity, when passing through the waste storage tank 2, since the retarding slope 201 of the waste storage tank 2 guides a part of the waste particles into the waste storage tank 2, and three sides inside the waste storage tank 2 are right-angle sides, which can obstruct the circulation of liquid or gas, the speed of the liquid or gas inside can be greatly reduced, waste particles can be deposited inside the waste storage tank 2 for storage, when the waste particles are prevented from passing through the ball body 5, the surface of the ball 5 is worn to cause a reduction in the sealing performance, and the sealing knob 203 provided by rotation can be taken out of the cleaning hole 202, and waste particles accumulated inside the waste storage tank 2 can be discharged through the cleaning hole 202.
Wherein, in order to realize the purpose of being convenient for to connect, this device adopts following technical scheme to realize: the connecting hole 101 is seted up to valve cap 1 one side surface, and threaded fixing hole 102 is seted up to valve cap 1 opposite side surface, and the inside movable mounting in threaded fixing hole 102 has set screw 103, and valve cap 1 passes through set screw 103 interconnect with valve body 3.
Can connect outside pipeline through connecting hole 101, can relieve the direct connection of bonnet 1 and valve body 3 through rotatory set screw 103, be convenient for later maintenance and maintenance.
In order to ensure the sealing performance of the valve rod 402, the device adopts the following technical scheme: 4 up end movable mounting of packing box has packing to press cover 4011, and packing press cover 4011 up end movable mounting has packing plate 401, and clamp plate fixed screw hole 409 has all been seted up with 4 upper surfaces of packing box to packing plate 401, and the inside movable mounting of clamp plate fixed screw hole 409 has fixing bolt 4010, and packing plate 401 passes through fixing bolt 4010 to be fixed in 4 tops of packing box, and 4 inside packings of packing box have oilless graphite filler 408.
Can drive packing plate 401 downstream through rotatory fixing bolt 4010, packing plate 401 downstream can drive packing and press cover 4011 downstream, and packing press cover 4011 downstream can extrude the inside oilless graphite filler 408 of filling of packing box 4, for packing provide continuous stable pretightning force, effectual compensation temperature, pressure fluctuation and the wearing and tearing of oilless graphite filler 408, ensure long-life valve rod sealing performance.
Wherein, in order to realize the purpose of stabilizing the moment of torsion of valve rod 402, this device adopts following technical scheme to realize: a valve rod 402 is movably mounted in the stuffing box 4, a driving actuator 403 is fixedly mounted on the upper end face of the valve rod 402, a first bearing sleeve 405 is sleeved on the surface of the valve rod 402, a bearing 404 is movably mounted on the upper end face of the first bearing sleeve 405, a second bearing sleeve 406 is movably connected to the upper end face of the bearing 404, another bearing 404 is movably mounted on the upper end face of the second bearing sleeve 406, and a third bearing sleeve 407 is movably connected to the upper end face of the another bearing 404.
Through unique duplex bearing 404 design and hardening technology processing, can stabilize the moment of torsion of valve rod 402, the drive executor 403 that sets up is convenient for cooperate and uses valve drive devices such as manual, pneumatics, electronic to drive valve rod 402 rotatory, and the valve rod 402 is rotatory can drive spheroid 5 rotatory to close or open the ball valve.
Wherein, in order to realize the purpose that does not have O type circle, this device adopts following technical scheme to realize: connecting convex column 502 has all been seted up to spheroid 5 upper surface and lower surface, and connecting groove 503 has been seted up to the connecting convex column 502 up end that is located spheroid 5 upper surface, and connecting groove 503 and valve rod 402 mutually support, and 5 upper surfaces of spheroid and lower surface movable mounting have slider 504, and 6 outer surface activities of valve seat have cup jointed two sealing rings 601, and sealing ring 601 one side just is located 6 outer surfaces of valve seat and has cup jointed two dish springs 602, and the spheroid 5 material is carbide.
Through connecting groove 503 and valve rod 402 mutually supporting, valve rod 402 is rotatory to drive spheroid 5 rotatory, slider 504 can guarantee that valve rod 402 does not receive radial force, the design of protection valve rod, the switch is more reliable, adopt the carbide material, can guarantee that spheroid 5 is at high temperature, the metal adhesion phenomenon takes place not to take place under the pure gas working condition of high pressure, and with the base member bonding strength height, be difficult for droing, double wedge self sealss packs the zero leakage between structure assurance disk seat 6 and the valve body 3, sealing ring 601 material is the oilless graphite, sealed reliable two-way seal that accords with API598/ASMEB16.104VI level and above requirement, adopt disk seat 6 to seal, avoid the fire of the O type circle, the assembly damage, wash damage and ageing, dish spring 602 can guarantee that the good high temperature performance of sealed under the low-pressure difference is good, compensate sealed face wearing and tearing simultaneously.
The working principle and the using process of the invention are as follows: when the device is used, the device is required to be placed at a proper position, a pipeline which needs to be blocked is connected with the connecting hole 101 through the arranged valve body connecting hole 301, the arranged driving actuator 403 is convenient to cooperate with a manual valve driving device, a pneumatic valve driving device, an electric valve driving device and the like to drive the valve rod 402 to rotate, the connecting groove 503 is matched with the valve rod 402, the valve rod 402 can drive the ball body 5 to rotate, the ball valve can be closed when the ball body 5 rotates by 90 degrees, when liquid or gas passes through the valve cap 1, if certain impurity particles are mixed in the interior, the gravity can be close to the lower part to rub with the inner wall of the valve cap 1 mutually, when the waste material storage groove 2 passes through, the slow speed slope 201 arranged on the waste material storage groove 2 can guide a part of waste material particles to enter the waste material storage groove 2, three sides in the waste material storage groove 2 are right-angle sides, the liquid or gas circulation can be blocked, the speed of the liquid or gas in the interior can be greatly reduced, waste material granule can deposit and store in waste material storage tank 2 is inside, when preventing it from passing through spheroid 5, wearing and tearing spheroid 5 surface, causes the reduction of leakproofness, and the sealed knob 203 of rotatory setting can take out clearance hole 202 with it, can emit the waste material granule that waste material storage tank 2 is inside to be gathered through clearance hole 202.
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)
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| CN202111121656.5A CN113915367A (en) | 2021-09-24 | 2021-09-24 | Novel low-leakage ball valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111121656.5A CN113915367A (en) | 2021-09-24 | 2021-09-24 | Novel low-leakage ball valve |
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| CN113915367A true CN113915367A (en) | 2022-01-11 |
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| CN202111121656.5A Pending CN113915367A (en) | 2021-09-24 | 2021-09-24 | Novel low-leakage ball valve |
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Cited By (1)
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|---|---|---|---|---|
| CN118375749A (en) * | 2024-06-27 | 2024-07-23 | 成都成高阀门股份有限公司 | Metal seal valve seat |
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| CN118375749B (en) * | 2024-06-27 | 2024-08-23 | 成都成高阀门股份有限公司 | Metal seal valve seat |
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Application publication date: 20220111 |