CN113404923B - Operating valve for opening and closing bottom door of stone ballast hopper car - Google Patents
Operating valve for opening and closing bottom door of stone ballast hopper car Download PDFInfo
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- CN113404923B CN113404923B CN202110500643.2A CN202110500643A CN113404923B CN 113404923 B CN113404923 B CN 113404923B CN 202110500643 A CN202110500643 A CN 202110500643A CN 113404923 B CN113404923 B CN 113404923B
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- passage
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- bidirectional
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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
- F16K35/00—Means to prevent accidental or unauthorised actuation
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses an operating valve for opening and closing a bottom door of a ballast hopper car, which comprises: the air inlet passage and the five air passages are arranged in the valve seat, one ends of the five air passages form air passage holes which are distributed in a pentagon shape at the top of the valve seat, the five air passage holes are sequentially communicated with the air exhaust passage of the small door bidirectional cylinder, the air exhaust passage of the small door bidirectional cylinder rear cover, the air exhaust passage of the large door bidirectional cylinder front cover and the air exhaust passage of the small door bidirectional cylinder front cover along the clockwise direction, the valve body is arranged on the valve seat and connected with the valve seat to form a valve chamber, the side wall of the valve body is provided with a large door bidirectional cylinder air exhaust port communicated with the valve chamber and the outside, the operating valve can independently control the two bidirectional air cylinders, and is provided with six valve positions which meet the requirements of a manual position, a small door opening position, a large door opening position, a pressure maintaining position, a large door closing position and a small door closing position.
Description
Technical Field
The invention belongs to the technical field of railway freight car control systems, and particularly relates to an operating valve for opening and closing a bottom door of a ballast hopper car.
Background
The present stone tiny fragments of stone, coal, etc. hopper car has adopted and has prevented pressing from both sides tiny fragments of stone, coal, etc. and has adopted the anti-pinch tiny fragments of coal, etc. end door design to be two sets of drive mechanism, one set is gate switching drive mechanism, and one set is little door switching drive mechanism, and its order of opening the door to closing the door is: the manual operation, the small door opening, the large door opening, the pressure maintaining position, the large door closing, the small door closing and the manual operation are performed, one control valve can only control one set of transmission mechanism, the two sets of transmission mechanisms are independently controlled through the control valve to achieve the purpose of preventing the ballast bottom door from being clamped, misoperation is easy to occur, and the efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an operating valve for opening and closing a bottom door of a ballast hopper car.
In order to achieve the above object, the present invention provides an operation valve for opening and closing a bottom door of a ballast hopper car, comprising:
the air inlet passage and the five air passages are arranged in the valve seat, one ends of the five air passages form pentagonal air passage holes at the top of the valve seat, and the five air passage holes are sequentially communicated with the small-door bidirectional cylinder air exhaust passage, the small-door bidirectional cylinder rear cover passage, the large-door bidirectional cylinder front cover passage and the small-door bidirectional cylinder front cover passage along the clockwise direction;
the valve body is arranged on the valve seat and connected with the valve seat to form a valve chamber, and a gate bidirectional cylinder exhaust outlet for communicating the valve chamber with the outside is formed in the side wall of the valve body;
the valve core is rotatably arranged inside the valve chamber, three arc-shaped long circular holes, a long circular hole and a small door control V-shaped hole are uniformly distributed on one side of the valve core, the middle part of the small door control V-shaped hole is connected with an exhaust air path of the small door bidirectional cylinder, two ends of the small door control V-shaped hole can be respectively connected with a through small door bidirectional cylinder rear cover passage and a through small door bidirectional cylinder front cover passage, two ends of the arc-shaped long circular hole can be respectively connected with a through large door bidirectional cylinder rear cover passage and a through large door bidirectional cylinder front cover passage, one end of the long circular hole can be connected with any one of the through small door bidirectional cylinder rear cover passage, the through large door bidirectional cylinder front cover passage and the through small door bidirectional cylinder front cover passage, and an air inlet hole communicated with the other end of the long circular hole and a large door hole communicated with the three arc-shaped long circular holes are formed in the other side of the valve core;
the valve rod is rotatably connected to the valve body, one end of the valve rod is exposed, and the other end of the valve rod is detachably connected with the valve core in the valve chamber.
Optionally, the valve further comprises a flange plate, the flange plate is arranged between the valve core and the valve body, one side of the flange plate is connected with the valve seat through a flange plate sealing membrane plate, the other side of the flange plate is provided with an annular mounting surface and a grinding surface higher than the mounting surface, the mounting surface is connected with the valve body, and the grinding surface is connected with the valve core.
Optionally, the valve element is provided with a boss near the valve rod, the exhaust hole penetrates through the boss and is communicated with the outside, two sides of the boss are provided with limit grooves, first positioning pin holes are formed in the limit grooves, the valve rod is provided with a valve rod limit disc near the valve element end, limit blocks matched with the limit grooves are arranged on the valve rod limit disc, and second positioning pin holes matched with the first positioning pin holes are formed in the limit blocks.
Optionally, the valve stem comprises:
the exhaust device comprises a rod body, wherein an exhaust channel is formed in the lower end of the rod body;
the exhaust groove is arranged on the side wall of the rod body, and the upper end and the lower end of the exhaust groove are respectively provided with a sealing ring groove;
and one end of the air exhaust hole is communicated with the air exhaust groove, and the other end of the air exhaust hole is communicated with the air exhaust air path of the two-way cylinder of the small door through the air exhaust channel.
Optionally, the automatic valve further comprises a handle and a ball valve, wherein the handle is fixed on the valve rod through a detachable structure in which a rivet collar is matched with the rivet pin rod, and the rivet pin rod is positioned at one end of the valve rod; the ball valve is connected with an air inlet of the air inlet passage.
Optionally, the handlebar comprises:
the rivet collar is arranged on the connecting block;
the long rotating rod is arranged at one end of the connecting block;
the short rotating rod is arranged at the other end of the connecting block, an observation hole is formed in one end, far away from the connecting block, of the short rotating rod, and a position mark matched with the observation hole is arranged on the valve body;
the auxiliary rotating rod is arranged below the observation hole, the auxiliary rotating rod is close to one end of the observation hole and is provided with a round hole, a pawl is connected in the round hole in a sliding mode, and a pawl spring is arranged between the pawl and the bottom wall of the round hole.
Optionally, be provided with two on the valve body and prevent the device that turns by mistake, two prevent the device that turns by mistake set up respectively in the both sides of air inlet passage, prevent that the device that turns by mistake includes:
the mounting seat is arranged on the valve body, and a vertical sliding groove is formed in the mounting seat;
the anti-misoperation bolt is connected in the sliding groove in a sliding mode and is of an L-shaped structure formed by a guide column and a pressing handle, the pressing handle is arranged on one side of the guide column, and a guide groove is formed in one side, away from the guide column, of the guide column;
one end of the reset spring is connected with the bottom end of the sliding chute, and the other end of the reset spring is connected with the guide post;
and one end of the limit screw penetrates through the side wall of the sliding groove to be matched with the guide groove.
Optionally, a valve cover limiting disc is arranged on the valve body, and a notch matched with the pawl is formed in the valve cover limiting disc.
Optionally, a third positioning pin hole is formed in the rod body, and a positioning pin mounting groove matched with the third positioning pin hole is formed in the rivet sleeve ring.
Optionally, a valve core pressure spring is arranged between the valve rod limiting disc and the valve core.
The invention provides an operating valve for opening and closing a bottom door of a ballast hopper car, which has the beneficial effects that:
1. the operating valve can simultaneously control two bidirectional air cylinders of a large door and a small door, six valve positions which meet the sequential operation from door opening to door closing of a manual position, a small door opening position, a large door opening position, a pressure maintaining position, a large door closing position and a small door closing position are arranged, and the operating valve has the function of preventing misoperation.
2. This operating valve is provided with prevents mistake and changes structure and the spacing dish of valve gap, improves the mistake operational capability of preventing of valve self through pure mechanical decoupling zero thigh, improves the reliability.
3. The operating valve improves the handle anti-theft performance through the rivet pin rod and the rivet lantern ring, the integral state of the valve is convenient to confirm through observing the mark through the observation hole, and the integral operability and the operation accuracy of the valve are improved; meanwhile, the auxiliary rotating rod is arranged below the observation hole to avoid interference of the handle and the anti-misoperation device.
4. The V-shaped hole is controlled to avoid through the small door, the arc-shaped long round hole is communicated with the air exhaust hole of the gate, air exhaust of the gate passes through the arc-shaped long round hole, penetrates through the inner cavity of the valve core and exhausts on the valve core, and the problem of interference of two sets of door air paths is solved.
5. The flange plate is matched with the valve body and the valve seat, so that the integral sealing performance of the valve is provided.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic operation flow diagram of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 2 shows a schematic structural diagram of a pressure maintaining position of an operating valve for opening and closing a bottom door of a stone ballast hopper car according to an embodiment of the invention.
Fig. 3 shows an enlarged manual position of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 4 shows a structural schematic diagram of a valve seat of an operating valve for opening and closing a bottom door of a stone ballast hopper car according to an embodiment of the invention.
Fig. 5 shows a schematic structural diagram of a flange plate of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 6 shows a side view of a flange of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 7 shows a schematic structural diagram of a flange sealing diaphragm plate of an operating valve for opening and closing a bottom door of a stone ballast hopper car according to an embodiment of the invention.
Fig. 8 shows a schematic structural diagram of a valve core of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 9 showsbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 8 of an operating valve for opening and closingbase:Sub>A bottom door ofbase:Sub>A ballast hopper car according to an embodiment of the invention.
Fig. 10 shows a view in the direction B of fig. 9 of a control valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 11 shows a schematic operation flow diagram of a valve core of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 12 shows a schematic structural diagram of a valve rod of an operating valve for opening and closing a bottom door of a stone ballast hopper car according to an embodiment of the invention.
Fig. 13 shows a top view of a valve stem of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 14 shows a schematic structural diagram of an anti-misoperation structure of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 15 shows a schematic structural diagram of a valve cover limiting disc of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 16 shows a side view of a valve cover limiting disc of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 17 shows a schematic structural diagram of a handle of a steering valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Fig. 18 shows a top view of a handle of a steering valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
Description of reference numerals:
1. a valve seat; 1.1, an air inlet passage; 1.2, a small door bidirectional cylinder air exhaust air path; 1.3, a passage is formed between the small door and the bidirectional cylinder rear cover; 1.4, communicating a channel of a rear cover of a bidirectional cylinder of the gate; 1.5, a two-way cylinder front cover passage of a gate is communicated; 1.6, a two-way cylinder front cover passage of the small door is communicated; 2. a valve body; 2.1, a bidirectional cylinder air outlet of a gate; 3. a valve core; 3.1 arc long round hole; 3.2, controlling the V-shaped hole by the small door; 3.3, air inlet holes; 3.4, a gate exhaust hole; 3.5, a boss; 3.6, a first positioning pin hole; 4. a valve stem; 4.1, a valve rod limiting disc; 4.2, a second positioning pin hole; 4.3, a rod body; 4.4, an air exhaust groove; 4.5, sealing ring grooves; 4.6, air exhaust holes; 4.7, a third positioning pin hole; 5. a handle; 5.1 connecting blocks; 5.2, long rotating rods; 5.3, short rotating rod; 5.4, an observation hole; 5.5, an auxiliary rotating rod; 5.6, sincere seeds; 5.7, a pawl spring; 6. a ball valve; 7. pulling and riveting the pin rod; 8. riveting a lantern ring; 9. a flange plate; 10. the flange plate seals the diaphragm plate; 11. a structure for preventing false rotation; 11.1, a mounting seat; 11.2, preventing the bolt from rotating by mistake; 11.3, a guide post; 11.4, pressing a handle; 11.5, a return spring; 11.6, a limit screw; 12. a valve cover limiting disc; 13. and a valve core pressure spring.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Fig. 1 shows an operation schematic diagram of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; fig. 2 shows a schematic structural diagram of a pressure maintaining position of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; FIG. 3 shows an enlarged manual view of the operational valve of FIG. 1 for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; FIG. 4 shows a schematic structural diagram of a valve seat of an operating valve for opening and closing a bottom door of a stone ballast hopper car according to an embodiment of the invention; fig. 5 shows a schematic structural diagram of a flange plate of an operating valve for opening and closing a bottom door of a stone ballast hopper car according to an embodiment of the invention; fig. 6 shows a side view of a flange of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; FIG. 7 shows a schematic structural diagram of a flange sealing diaphragm plate of an operating valve for opening and closing a bottom door of a stone ballast hopper car according to an embodiment of the invention; fig. 8 shows a schematic structural diagram of a valve core of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; FIG. 9 illustratesbase:Sub>A sectional A-A view of the operational valve of FIG. 8 for opening and closingbase:Sub>A bottom door ofbase:Sub>A ballast hopper car, according to an embodiment of the invention; FIG. 10 illustrates a view in the direction B of FIG. 9 of a control valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; FIG. 11 illustrates a schematic operational view of a valve cartridge of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; FIG. 12 shows a schematic structural diagram of a valve stem of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; FIG. 13 illustrates a top view of a valve stem of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; fig. 14 shows a schematic structural diagram of an anti-misoperation structure of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; fig. 15 shows a schematic structural diagram of a bonnet limiting disc of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; fig. 16 shows a side view of a valve cover limiting disc of an operating valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; fig. 17 shows a structural schematic diagram of a handle of a control valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention; fig. 18 shows a top view of a handle of a steering valve for opening and closing a bottom door of a ballast hopper car according to an embodiment of the invention.
As shown in fig. 1 to 18, an operating valve for opening and closing a bottom door of a ballast hopper car comprises:
the air inlet valve comprises a valve seat 1, wherein an air inlet passage 1.1 and five air passages are arranged in the valve seat 1, one ends of the five air passages form air passage holes which are distributed in a pentagon shape at the top of the valve seat 1, and the five air passage holes are sequentially communicated with a small door bidirectional cylinder air exhaust passage 1.2, a small door bidirectional cylinder rear cover passage 1.3, a large door bidirectional cylinder rear cover passage 1.4, a large door bidirectional cylinder front cover passage 1.5 and a small door bidirectional cylinder front cover passage 1.6 along the clockwise direction;
the valve body 2 is arranged on the valve seat 1 and connected with the valve seat 1 to form a valve chamber, and the side wall of the valve body 2 is provided with a gate bidirectional cylinder exhaust outlet 2.1 for communicating the valve chamber with the outside;
the valve core 3 is rotationally arranged in the valve chamber and is rotationally connected with the valve seat 1, three uniformly distributed arc-shaped long circular holes 3.1, a long circular hole and a small door control V-shaped hole 3.2 are formed in one side of the valve core 3, the middle of the small door control V-shaped hole 3.2 is connected with an exhaust air path 1.2 of the small door bidirectional cylinder, two ends of the small door control V-shaped hole 3.2 can be respectively connected with a passage 1.3 for passing through a rear cover of the small door bidirectional cylinder and a passage 1.6 for passing through a front cover of the small door bidirectional cylinder, two ends of the arc-shaped long circular hole 3.1 can be respectively connected with a passage 1.4 for passing through the rear cover of the large door bidirectional cylinder and a passage 1.5 for passing through the front cover of the large door bidirectional cylinder, one end of the long circular hole can be connected with any one of a passage 1.3 for passing through a rear cover of the small door bidirectional cylinder, a passage 1.4 for passing through the rear cover of the large door bidirectional cylinder, a passage 1.5 for passing through the front cover of the large door bidirectional cylinder and a passage 1.6 for passing through the front cover of the small door bidirectional cylinder, and three air exhaust air holes 3.3 are formed in the other side of the valve 3, and three long circular holes 3.3 are formed in the other side of the arc-shaped long circular hole;
and the valve rod 4 is rotatably connected to the valve body 2, one end of the valve rod 2 is exposed, and the other end of the valve rod 4 is detachably connected with the valve core 3 in the valve chamber.
Specifically, constitute the operating valve through disk seat 1, valve body 2, case 3 and valve rod 4, drive case 3 through rotating valve rod 4 and rotate, and then communicate different gas circuits, reach the effect of manipulating big door and wicket, the different states of operating valve as follows:
when the position is manually operated: the small door control V-shaped hole 3.2 is communicated with a small door bidirectional cylinder air exhaust path 1.2, a small door bidirectional cylinder rear cover communicating path 1.3 and a small door bidirectional cylinder front cover communicating path 1.6, the arc-shaped long circular hole 3.1 is communicated with a large door bidirectional cylinder rear cover communicating path 1.4, a large door bidirectional cylinder front cover communicating path 1.5 and a large door air exhaust hole 3.4, the air inlet communicating path 1.1 cannot charge air for each air path through the valve core 3, the large door bidirectional air cylinder front cover communicating path 1.5 and the large door bidirectional air cylinder rear cover communicating path 1.4 are communicated with a large door air cylinder air exhaust port 2.1, and the small door bidirectional air cylinder front cover communicating path 1.6 and the small door bidirectional air cylinder rear cover communicating path 1.3 are communicated with a small door bidirectional air cylinder air exhaust path 1.2.
When the small door is opened: the air inlet hole 3.3 enables the air inlet passage 1.1 to be communicated with the small door bidirectional air cylinder rear cover passage 1.3, so that pressure air is smoothly discharged, the small door control V-shaped hole 3.2 enables the small door bidirectional air cylinder front cover passage 1.6 to be communicated with the small door bidirectional air cylinder exhaust passage 1.2, the small door bidirectional air cylinder exhaust passage 1.2 is smoothly discharged with pressure air, meanwhile, the arc-shaped long circular hole 3.1 is communicated with the large door bidirectional air cylinder rear cover passage 1.4, the large door bidirectional air cylinder front cover passage 1.5 and the large door exhaust hole 3.4, so that no pressure air is discharged from the large door bidirectional air cylinder rear cover passage 1.4 and the large door air cylinder exhaust port 2.1.
When the large door is opened: the air inlet hole 3.3 is communicated with the two-way air cylinder rear cover passage 1.4 of the gate to enable the pressure air to be discharged smoothly, meanwhile, the arc-shaped long circular hole 3.1 is communicated with the two-way air cylinder front cover passage 1.5 of the gate and the air outlet hole 3.4 of the gate, the pressure air is discharged smoothly at the air outlet 2.1 of the gate air cylinder, and the non-pressure air is separated from the air discharge through the small-gate two-way air cylinder rear cover passage 1.3 and the small-gate two-way air cylinder air discharge passage 1.2.
And (3) during pressure maintaining position: the air inlet passage 1.1 can not charge air for each air passage through the valve core 3, the air outlet hole of the gate 3.4, the passage 1.5 of the front cover of the bidirectional cylinder for the large door and the passage 1.4 of the rear cover of the bidirectional cylinder for the large door are separated by the valve core 3, and the passage 1.3 of the rear cover of the bidirectional cylinder for the small door, the passage 1.6 of the front cover of the bidirectional cylinder for the small door and the air outlet passage 1.2 of the bidirectional cylinder for the small door are separated by the valve core 3.
When the big door is closed: the air inlet hole 3.3 is communicated with the air inlet passage 1.1 and the two-way cylinder front cover passage 1.5 of the gate to discharge the pressure air smoothly, the arc-shaped long circular hole 3.1 is communicated with the two-way cylinder rear cover passage 1.4 of the gate and the two-way cylinder rear cover passage 1.4 of the gate to discharge the pressure air smoothly, and no pressure air is discharged from the two-way air cylinder rear cover passage 1.3 of the small door and the two-way cylinder exhaust passage 1.2 of the small door.
When the small door is closed: the left anti-misoperation bolt is pressed, the handle is rotated to close the small door, the air inlet hole 3.3 is communicated with the passage 1.6 of the front cover of the bidirectional air cylinder of the small door to enable pressure air to be smoothly discharged, the V-shaped hole 3.2 for controlling the small door is communicated with the passage 1.3 of the rear cover of the bidirectional air cylinder of the small door and the exhaust passage 1.2 of the bidirectional air cylinder of the small door to enable the pressure air to be smoothly discharged, and no pressure air is discharged from the air outlet hole 3.4 of the large door, the passage 1.5 of the front cover of the bidirectional air cylinder of the large door and the passage 1.4 of the rear cover of the bidirectional air cylinder of the large door.
Further, five gas circuit air inlets of disk seat 1 all are provided with the DN15 flange mounting face of "V" type of falling, conveniently connect the installation, and valve body 2 is provided with three mounting hole simultaneously, makes things convenient for disk seat 1 and 2 erection joint of valve body.
In this embodiment, the valve further comprises a flange 9, the flange 9 is arranged between the valve element 3 and the valve body 2, one side of the flange 9 is connected with the valve seat 1 through a flange sealing diaphragm 10, the other side of the flange 9 is provided with an annular mounting surface 9.1 and a grinding surface 9.2 higher than the mounting surface 9.1, the mounting surface 9.1 is connected with the valve body 2, and the grinding surface 9.2 is connected with the valve element 3.
Specifically, the sealing performance of the operating valve is improved through the flange plate 9 and the flange plate sealing diaphragm plate 10, and air leakage between the valve seat 1 and the valve body 2 are avoided.
Furthermore, a phi 100 phi 3.55O-shaped ring is arranged on the valve body 2 to increase the sealing effect.
In this embodiment, case 3 is close to valve rod 4 side and sets up boss 3.5, and the hole 3.4 of airing exhaust at the gate runs through boss 3.5 and outside intercommunication, and boss 3.5's both sides are provided with the spacing groove, and the spacing inslot is provided with first location pinhole 3.6, and valve rod 4 is close to case 3 end and is provided with valve rod spacing dish 4.1, be provided with on the valve rod spacing dish 4.1 with spacing groove assorted stopper, be provided with first location pinhole 3.6 matched with second location pinhole 4.2 on the stopper.
Particularly, the limiting groove and the limiting block are used for facilitating quick and accurate connection of the valve rod limiting disc 4.1 and the valve core 3, and the valve rod 4 and the valve core 3 are fixed through the first positioning pin hole 3.6 and the second positioning pin hole 4.2 for fixing the limiting groove and the limiting block.
Further, valve rod 4 is close to the spacing dish 4.1 end of valve rod and pegs graft in hole 3.4 of airing exhaust, and valve rod 4 is close to between the spacing dish 4.1 end of valve rod and the hole 3.4 inner wall of airing exhaust through the sealing washer groove simultaneously and is provided with the sealing washer, further improves the gas tightness.
In the present embodiment, the valve stem 4 includes:
the rod body 4.3 is provided with an exhaust channel inside the lower end of the rod body 4.3;
the exhaust groove 4.4 is arranged on the side wall of the rod body 4.3, and the upper end and the lower end of the exhaust groove 4.4 are provided with sealing ring grooves 4.5;
and one end of the air exhaust hole 4.6 is communicated with the air exhaust groove 4.5, and the other end of the air exhaust hole 4.6 is communicated with the air exhaust gas path 1.2 of the small-door bidirectional cylinder through an air exhaust channel.
Specifically, through air exhaust hole 4.6 and air exhaust groove 4.4 cooperation case 3 and disk seat 1 intercommunication valve room and outside, make the operating valve take a breath in the specific position, all the other positions keep sealed, place sealed the freon through seal ring groove 4.5 and improve the gas tightness, avoid gas leakage.
Furthermore, the cross-sectional areas of the air exhaust holes 4.6 and the air exhaust grooves 4.4 are consistent, and smooth and stable air exhaust is guaranteed.
In the embodiment, the valve further comprises a handle 5 and a ball valve 6, wherein the handle 5 is fixed on the valve rod 4 through a detachable structure in which a rivet lantern ring 8 is matched with a rivet pin rod 7, and the rivet pin rod 7 is positioned at one end of the valve rod 4; the ball valve 6 is connected with the air inlet of the air inlet passage 1.1.
Specifically, the handle 5 and the valve rod 4 are matched conveniently through the rivet collar 8 and the rivet pin rod 7, the use is convenient, the anti-theft performance is improved, and the on-off of the operating valve and the gas circuit is controlled through the ball valve 6.
In the present embodiment, the handle 5 includes:
the connecting block 5.1 is provided with a rivet collar 8 on the connecting block 5.1;
the long rotating rod 5.2 is arranged at one end of the connecting block 5.1;
the short rotating rod 5.3 is arranged at the other end of the connecting block 5.1, an observation hole 5.4 is formed in one end, far away from the connecting block 5.1, of the short rotating rod 5.3, and a position mark matched with the observation hole 5.4 is arranged on the valve body 2;
supplementary bull stick 5.5 sets up in the below of observing hole 5.4, and the one end that supplementary bull stick 5.5 is close to observing hole 5.4 is provided with the round hole, and sliding connection has sincere son 5.6 in the round hole, is provided with sincere son spring 5.7 between the diapire of sincere son 5.6 and round hole.
It is specific, fix through connecting block 5.1 and rivet lantern ring 8 and conveniently be connected with valve rod 4, rotate the hand (hold) through overlength bull stick 5.2 and make things convenient for the application of force, set up through short bull stick 5.3 and observe hole 5.4 and observe the convenient position of affirmation of sign, feel 5.5 through supplementary makeup and set up sincere son 5.6 and sincere son spring 5.7 and cushion the energy dissipation, reduce the vibrations of hand (hold) 5 rotation process.
Further, the valve body 2, the valve seat 1 and the handle 5 are all made of aluminum alloy castings, so that the outer surface coating is omitted, the light weight is realized on the basis of ensuring low cost, and the overall attractiveness is improved.
In this embodiment, be provided with two on the valve body 2 and prevent mistake and change structure 11, two prevent mistake and change device 11 and set up respectively in the both sides of inlet air circuit 1.1, prevent mistake and change structure 11 and include:
the mounting seat 11.1 is arranged on the valve body 2, and a vertical sliding groove is formed in the mounting seat 11.1;
the anti-misoperation bolt 11.2 is connected in the sliding groove in a sliding mode, the anti-misoperation bolt 11.2 is of an L-shaped structure formed by a guide column 11.3 and a pressing handle 11.4, the pressing handle 11.4 is arranged on one side of the guide column 11.3, and a guide groove is formed in one side, away from the pressing handle 11.4, of the guide column 11.3;
one end of the return spring 11.5 is connected with the bottom end of the sliding chute, and the other end of the return spring 11.5 is connected with the guide post 11.3;
and one end of the limiting screw 11.6 penetrates through the side wall of the sliding groove to be matched with the guide groove.
Specifically, two prevent mistake commentaries on classics structure 11 settings between "little door-opening" and "big door-opening", big door-closing "and" little door-closing ", prevent mistake through two and rotate structure 11 and avoid the mistake to rotate the operating valve, during the use through pressing hand (hold) 11.4 drive guide post 11.3 whereabouts extrusion reset spring, make hand (hold) 5 pass through, later reset spring 11.5 resume, the messenger prevents mistake commentaries on classics bolt 11.2 and resets, stop screw 11.5 avoids preventing mistake commentaries on classics bolt 11.2 with the guide way cooperation and deviates from.
In this embodiment, the valve body 2 is provided with a valve cover limiting disc 12, and the valve cover limiting disc 12 is provided with a notch matched with the pawl 5.6.
Specifically, the gaps of the valve cover limiting disc 12 are matched with the sincere claws 5.6 of the handles 5 at different positions, so that the in-place reminding is convenient to carry out, and the perceptibility is improved.
In this embodiment, a third positioning pin hole 4.7 is formed in the rod body 4.3, and a positioning pin mounting groove matched with the third positioning pin hole is formed in the rivet collar 8.
Specifically, the valve rod 4 is fixed from the restriction of both ends through the first locating pin hole 3.6 of locating pin 4.7 and the cooperation of locating pin mounting groove and second locating pin hole 4.2, improves 4 installation accuracy of valve rod.
In the present exemplary embodiment, a valve element pressure spring 13 is arranged between the valve rod limiting disk 4.1 and the valve element 3.
Specifically, the valve core 3 is provided with pre-pressure through the valve core pressure spring 13, and the sealing of the joint of the valve core 3 and the valve body 2 is ensured.
When the operating valve capable of simultaneously controlling two sets of transmission mechanisms is used, the operation is taken as an example from manual operation, small door opening, large door opening, pressure maintaining position, large door closing, small door closing and manual operation:
manual position: the opening ball valve 16 is communicated with an air inlet passage 1.1 and an air passage, a small door control V-shaped hole 3.2 is communicated with a small door bidirectional cylinder air exhaust passage 1.2, a small door bidirectional cylinder rear cover passage 1.3 and a small door bidirectional cylinder front cover passage 1.6, an arc-shaped long hole 3.1 is communicated with a large door bidirectional cylinder rear cover passage 1.4, a large door bidirectional cylinder front cover passage 1.5 and a large door air exhaust hole 3.4, the air inlet passage 1.1 cannot charge air to each air passage through a valve core 3 at the moment, the large door bidirectional air cylinder front cover passage 1.5 and the large door bidirectional air cylinder rear cover passage 1.4 are communicated with a large door air cylinder air exhaust port 2.1, and the small door bidirectional air cylinder front cover passage 1.6 and the small door bidirectional air cylinder rear cover passage 1.3 are communicated with a small door bidirectional air cylinder air exhaust passage 1.2.
The handle 5 is rotated, the identification confirmation position is observed through the observation hole 5.4 in the rotating process, and meanwhile the valve cover limiting disc 12 is matched with the pawl 5.6 for limiting.
Opening a small door: the handle 5 is rotated, the position is confirmed by observing the mark through the observation hole 5.4 in the rotating process, meanwhile, the valve cover limiting disc 12 is matched with the pawl 5.6 to limit the position to the open position of the small door, the air inlet hole 3.3 enables the air inlet passage 1.1 to be communicated with the small door bidirectional air cylinder rear cover passage 1.3, pressure air is smoothly discharged, the small door controls the V-shaped hole 3.2 to enable the small door bidirectional air cylinder front cover passage 1.6 to be communicated with the small door bidirectional air cylinder exhaust passage 1.2, the small door bidirectional air cylinder exhaust passage 1.2 has pressure air to be smoothly discharged, the arc-shaped long hole 3.1 is communicated with the large door bidirectional air cylinder rear cover passage 1.4, the large door bidirectional air cylinder front cover passage 1.5 and the large door exhaust hole 3.4, and no pressure air is discharged from the large door bidirectional air cylinder rear cover passage 1.4 and the large door air cylinder exhaust port 2.1.
Opening a large door: the right anti-misoperation structure 11 is pressed firstly, then the handle 5 is rotated to the open position of the gate, the air inlet hole 3.3 is communicated with the passage 1.4 of the rear cover of the bidirectional air cylinder of the gate to discharge the pressure air smoothly, meanwhile, the arc-shaped long circular hole 3.1 is communicated with the passage 1.5 of the front cover of the bidirectional air cylinder of the gate and the air outlet hole 3.4 of the gate, the air outlet 2.1 of the air cylinder of the gate is discharged smoothly with the pressure air, and the passage 1.3 of the rear cover of the bidirectional air cylinder of the small gate and the air outlet passage 1.2 of the bidirectional air cylinder of the small gate are separated from the non-pressure air discharge.
Pressure maintaining position: the handle 5 is rotated to the pressure maintaining position, the air inlet passage 1.1 can not charge air for each air passage through the valve core 3, the air outlet hole of the gate 3.4, the passage 1.5 of the front cover of the bidirectional cylinder for the large door and the passage 1.4 of the rear cover of the bidirectional cylinder for the large door are separated by the valve core 3, and the passage 1.3 of the rear cover of the bidirectional cylinder for the small door, the passage 1.6 of the front cover of the bidirectional cylinder for the small door and the air outlet passage 1.2 of the bidirectional cylinder for the small door are separated by the valve core 3.
Closing a big door: the handle 5 is rotated to a gate closing position, the air inlet hole 3.3 is communicated with the air inlet passage 1.1 and the two-way cylinder front cover passage 1.5 communicated with the gate to smoothly discharge pressure air, the arc-shaped long circular hole 3.1 is communicated with the two-way cylinder rear cover passage 1.4 communicated with the gate to smoothly discharge the pressure air, and the two-way air cylinder rear cover passage 1.3 communicated with the small door and the two-way cylinder exhaust passage 1.2 communicated with the gate to smoothly discharge the pressure air.
When the small door is closed: the left anti-misoperation structure 11 is pressed firstly, then the handle 5 is rotated to a small door closing position, the air inlet hole 3.3 is communicated with the small door bidirectional air cylinder front cover passage 1.6 to enable pressure air to be discharged smoothly, the small door control V-shaped hole 3.2 is communicated with the small door bidirectional air cylinder rear cover passage 1.3 and the small door bidirectional air cylinder exhaust passage 1.2 to enable the pressure air to be discharged smoothly, and no pressure air is discharged from the gate air outlet hole 3.4, the large door bidirectional air cylinder front cover passage 1.5 and the large door bidirectional air cylinder rear cover passage 1.4.
Manual position: the handle 5 is rotated to the manual position and the ball valve 16 is closed.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. The utility model provides a control valve that is used for stone tiny fragments of stone, coal, etc. hopper car bottom door to open and close which characterized in that includes:
the air inlet passage and the five air passages are arranged in the valve seat, one ends of the five air passages form air passage holes which are distributed in a pentagon shape at the top of the valve seat, and the five air passage holes are sequentially communicated with the small door bidirectional cylinder air exhaust passage, the small door bidirectional cylinder rear cover passage, the large door bidirectional cylinder front cover passage and the small door bidirectional cylinder front cover passage along the clockwise direction;
the valve body is arranged on the valve seat and connected with the valve seat to form a valve chamber, and a bidirectional gate cylinder exhaust outlet for communicating the valve chamber with the outside is formed in the side wall of the valve body;
the valve core is rotatably arranged inside the valve chamber, three arc-shaped long circular holes, a long circular hole and a small door control V-shaped hole are uniformly distributed on one side of the valve core, the middle part of the small door control V-shaped hole is connected with an exhaust air path of the small door bidirectional cylinder, two ends of the small door control V-shaped hole can be respectively connected with a through small door bidirectional cylinder rear cover passage and a through small door bidirectional cylinder front cover passage, two ends of the arc-shaped long circular hole can be respectively connected with a through large door bidirectional cylinder rear cover passage and a through large door bidirectional cylinder front cover passage, one end of the long circular hole can be connected with any one of the through small door bidirectional cylinder rear cover passage, the through large door bidirectional cylinder front cover passage and the through small door bidirectional cylinder front cover passage, and an air inlet hole communicated with the other end of the long circular hole and a large door hole communicated with the three arc-shaped long circular holes are formed in the other side of the valve core;
the valve rod is rotatably connected to the valve body, one end of the valve rod is exposed, and the other end of the valve rod is detachably connected with the valve core in the valve chamber;
when the position is manually operated: the small door control V-shaped hole is communicated with a small door bidirectional cylinder air exhaust gas path, a small door bidirectional cylinder rear cover path and a small door bidirectional cylinder front cover path, the arc-shaped long circular hole is communicated with a large door bidirectional cylinder rear cover path, a large door bidirectional cylinder front cover path and a large door air exhaust hole, the air inlet path cannot charge air to each gas path through the valve core, the large door bidirectional air cylinder front cover path and the large door bidirectional air cylinder rear cover path are communicated with a large door air cylinder air exhaust port, and the small door bidirectional air cylinder front cover path and the small door bidirectional air cylinder rear cover path are communicated with a small door bidirectional cylinder air exhaust path;
when the small door is opened: the air inlet hole enables an air inlet passage to be communicated with a passage of a rear cover of a bidirectional air cylinder of the through small door, so that pressure air is discharged smoothly, the small door controls the V-shaped hole to enable a passage of a front cover of the bidirectional air cylinder of the through small door to be communicated with a gas discharge passage of the bidirectional air cylinder of the through small door, the exhaust passage of the bidirectional air cylinder of the through small door is discharged smoothly, the arc-shaped long circular hole is communicated with a passage of a rear cover of a bidirectional air cylinder of the gate, a passage of a front cover of the bidirectional air cylinder of the gate and a gas exhaust hole of the gate, and no pressure air is discharged from the passage of the rear cover of the bidirectional air cylinder of the gate and a gas exhaust port of the air cylinder of the gate;
when the big door is opened: the air inlet hole is communicated with a passage of a rear cover of a bidirectional air cylinder of a gate, so that pressure air is smoothly discharged, meanwhile, the arc-shaped long circular hole is communicated with a passage of a front cover of the bidirectional air cylinder of the gate and an air outlet of the gate, the pressure air is smoothly discharged from an air outlet of the air cylinder of the gate, and the passage of the rear cover of the bidirectional air cylinder of a small door and the air outlet of the bidirectional air cylinder of the small door are used for isolating the discharge of non-pressure air;
when the pressure maintaining position is performed: the air inlet passage can not charge air to each air passage through the valve core, the air outlet of the gate, the passage of the front cover of the bidirectional cylinder of the gate and the passage of the rear cover of the bidirectional cylinder of the gate are separated by the valve core, and the passage of the rear cover of the bidirectional cylinder of the small door, the passage of the front cover of the bidirectional cylinder of the small door and the air outlet passage of the bidirectional cylinder of the small door are separated by the valve core;
when the big door is closed: the air inlet hole is communicated with an air inlet passage and a passage communicated with a front cover of a bidirectional cylinder of the large door to enable pressure air to be discharged smoothly, the arc-shaped long circular hole is communicated with a passage communicated with a rear cover of a bidirectional cylinder of the large door and a passage communicated with a rear cover of a bidirectional cylinder of the large door to enable the pressure air to be discharged smoothly, and no pressure air is discharged from a passage communicated with a rear cover of a bidirectional air cylinder of the small door and an exhaust passage communicated with a bidirectional cylinder of the small door;
when the small door is closed: the air inlet hole is communicated with a passage of the front cover of the bidirectional air cylinder of the through small door, so that the pressure air is discharged smoothly, the V-shaped hole is controlled by the small door to be communicated with a passage of the rear cover of the bidirectional air cylinder of the through small door and a gas discharge passage of the bidirectional air cylinder of the through small door, so that the pressure air is discharged smoothly, and no pressure air is discharged from the air outlet hole of the gate, the passage of the front cover of the bidirectional air cylinder of the through gate and the passage of the rear cover of the bidirectional air cylinder of the through gate.
2. The operating valve for opening and closing the bottom door of the ballast hopper car according to claim 1, further comprising a flange, wherein the flange is arranged between the valve core and the valve body, one side of the flange is connected with the valve seat through a flange sealing diaphragm, the other side of the flange is provided with an annular mounting surface and a grinding surface higher than the mounting surface, the mounting surface is connected with the valve body, and the grinding surface is connected with the valve core.
3. The operating valve for opening and closing the bottom door of the ballast hopper car according to claim 2, wherein a boss is arranged on the valve core close to the valve rod, the air exhaust hole penetrates through the boss and is communicated with the outside, limiting grooves are formed in two sides of the boss, a first positioning pin hole is formed in each limiting groove, a valve rod limiting disc is arranged on the valve rod close to the valve core end, a limiting block matched with the limiting groove is arranged on each valve rod limiting disc, and a second positioning pin hole matched with the first positioning pin hole is formed in each limiting block.
4. The operating valve for opening and closing the bottom door of the ballast hopper car according to claim 1, wherein the valve rod comprises:
the exhaust device comprises a rod body, wherein an exhaust channel is formed in the lower end of the rod body;
the exhaust groove is arranged on the side wall of the rod body, and the upper end and the lower end of the exhaust groove are respectively provided with a sealing ring groove;
and one end of the air exhaust hole is communicated with the air exhaust groove, and the other end of the air exhaust hole is communicated with the air exhaust air path of the two-way cylinder of the small door through the air exhaust channel.
5. The operating valve for opening and closing the bottom door of the ballast hopper car according to claim 4, further comprising a handle and a ball valve, wherein the handle is fixed on the valve rod through a detachable structure in which a rivet lantern ring is matched with a rivet pin rod, and the rivet pin rod is positioned at one end of the valve rod; the ball valve is connected with the air inlet of the air inlet passage.
6. The operating valve for opening and closing the bottom door of the ballast hopper car according to claim 5, wherein the handle comprises:
the rivet collar is arranged on the connecting block;
the long rotating rod is arranged at one end of the connecting block;
the short rotating rod is arranged at the other end of the connecting block, an observation hole is formed in one end, far away from the connecting block, of the short rotating rod, and a position mark matched with the observation hole is formed in the valve body;
the auxiliary rotating rod is arranged below the observation hole, the auxiliary rotating rod is close to one end of the observation hole and is provided with a round hole, a pawl is connected in the round hole in a sliding mode, and a pawl spring is arranged between the pawl and the bottom wall of the round hole.
7. The operating valve for opening and closing the bottom door of the ballast hopper car according to claim 1, wherein the valve body is provided with two anti-misrotation devices, the two anti-misrotation devices are respectively arranged on two sides of the air inlet passage, and each anti-misrotation device comprises:
the mounting seat is arranged on the valve body, and a vertical sliding groove is formed in the mounting seat;
the anti-misoperation bolt is connected in the sliding groove in a sliding mode and is of an L-shaped structure formed by a guide column and a pressing handle, the pressing handle is arranged on one side of the guide column, and a guide groove is formed in one side, away from the guide column, of the guide column;
one end of the reset spring is connected with the bottom end of the sliding chute, and the other end of the reset spring is connected with the guide post;
and one end of the limiting screw penetrates through the side wall of the sliding groove to be matched with the guide groove.
8. The operating valve for opening and closing the bottom door of the ballast hopper car according to claim 6, wherein a valve cover limiting disc is arranged on the valve body, and a notch matched with the pawl is formed in the valve cover limiting disc.
9. The operating valve for opening and closing the bottom door of the ballast hopper car according to claim 5, wherein a third positioning pin hole is formed in the rod body, and a positioning pin mounting groove matched with the third positioning pin hole is formed in the rivet collar.
10. The operating valve for opening and closing the bottom door of the ballast hopper car according to claim 3, wherein a valve core pressure spring is arranged between the valve rod limiting disc and the valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110500643.2A CN113404923B (en) | 2021-05-08 | 2021-05-08 | Operating valve for opening and closing bottom door of stone ballast hopper car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110500643.2A CN113404923B (en) | 2021-05-08 | 2021-05-08 | Operating valve for opening and closing bottom door of stone ballast hopper car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113404923A CN113404923A (en) | 2021-09-17 |
| CN113404923B true CN113404923B (en) | 2022-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110500643.2A Active CN113404923B (en) | 2021-05-08 | 2021-05-08 | Operating valve for opening and closing bottom door of stone ballast hopper car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113404923B (en) |
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| US3532116A (en) * | 1968-09-03 | 1970-10-06 | Westinghouse Air Brake Co | Brake cylinder pressure retaining valve |
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| CN104075006A (en) * | 2013-03-27 | 2014-10-01 | 株式会社堀场Stec | Fluid control valve |
| CN203963122U (en) * | 2014-07-30 | 2014-11-26 | 艾欧史密斯(中国)热水器有限公司 | Multifunctional switching valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4974999A (en) * | 1989-11-22 | 1990-12-04 | Gen-Tech, Inc. | Lock for a railroad hopper car outlet gate end tube assembly |
| JP4723748B2 (en) * | 2001-04-18 | 2011-07-13 | 黒田精工株式会社 | Air distribution valve for pneumatic massager |
| US6889710B2 (en) * | 2002-11-15 | 2005-05-10 | Air Products And Chemicals, Inc. | Rotary sequencing valve with flexible port plate |
| CN102221097A (en) * | 2011-05-26 | 2011-10-19 | 扬州市宝元机械制造有限公司 | Reversing valve for micro tensioner |
| CN104747756B (en) * | 2015-04-23 | 2017-08-04 | 肖永初 | A kind of rotary valve and apply its five pipe adsorption towers and oxygenerator |
| CN107264547A (en) * | 2017-05-23 | 2017-10-20 | 中车太原机车车辆有限公司 | A kind of control system with 120 valves control whole group coal hopper car bottom door opening and closing |
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2021
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1148861A (en) * | 1966-03-29 | 1969-04-16 | English Electric Co Ltd | Multi-way selector valves |
| US3532116A (en) * | 1968-09-03 | 1970-10-06 | Westinghouse Air Brake Co | Brake cylinder pressure retaining valve |
| GB1281493A (en) * | 1970-04-20 | 1972-07-12 | Ross Operating Valve Co | Signal comparator fluid control circuit |
| CN102529993A (en) * | 2012-01-04 | 2012-07-04 | 南车长江车辆有限公司 | Ballast discharging mechanism control system for ballast discharging hopper wagon |
| CN104075006A (en) * | 2013-03-27 | 2014-10-01 | 株式会社堀场Stec | Fluid control valve |
| CN203963122U (en) * | 2014-07-30 | 2014-11-26 | 艾欧史密斯(中国)热水器有限公司 | Multifunctional switching valve |
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| Publication number | Publication date |
|---|---|
| CN113404923A (en) | 2021-09-17 |
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