CN108861603B - Intelligent grain pumping machine - Google Patents
Intelligent grain pumping machine Download PDFInfo
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- CN108861603B CN108861603B CN201810770170.6A CN201810770170A CN108861603B CN 108861603 B CN108861603 B CN 108861603B CN 201810770170 A CN201810770170 A CN 201810770170A CN 108861603 B CN108861603 B CN 108861603B
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- shaft
- grain
- crawler
- barrel
- grain pumping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/24—Gas suction systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/16—Sorting according to weight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/34—Devices for discharging articles or materials from conveyor
- B65G47/46—Devices for discharging articles or materials from conveyor and distributing, e.g. automatically, to desired points
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/94—Devices for flexing or tilting travelling structures; Throw-off carriages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0202—Agricultural and processed food products
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adjustment And Processing Of Grains (AREA)
Abstract
An intelligent grain pumping machine comprises a base plate, a device support, a conveying crawler belt and a control electronic box, wherein a rotary plate is arranged on the upper surface of the base plate, the device support is fixed on the upper surface of the rotary plate, two groups of cross rods are arranged on two sides of the upper end of the device support, a first crawler belt shaft, a second crawler belt shaft and a third crawler belt shaft are sequentially arranged on the cross rods, the conveying crawler belt is sleeved between the first crawler belt shaft and the third crawler belt shaft, the second crawler belt shaft is positioned on the upper surface of the conveying crawler belt, a first driving motor is arranged in the middle of the device support and connected with the first crawler belt shaft through a hinge, wind pressure formed by rotation of blades inside a grain pumping barrel is utilized to suck grains and then fall to the crawler belt through a discharging barrel for transmission, the grains are thrown out under the action of inertia when passing through the first crawler belt shaft, and are screened according to different gravities of the grains and sundries in the throwing process, the structure is simple.
Description
Technical Field
The invention relates to the field of grain conveying equipment, in particular to an intelligent grain pumping machine.
Background
The grain pumping machine is a novel agricultural and industrial machine, pneumatically conveys granular materials, is suitable for the mechanical operations of loading, unloading, supplementing, discharging, turning over and stacking in the fields of farms, docks, stations, large grain depots and the like, and the mechanical operations of bulk loading, bulk transportation and bulk unloading in the production process of the industries of grain processing, feed processing, beer brewing and the like, and can independently complete the conveying task by a single machine.
Traditional grain pumping machine can't directly screen grain when transporting grain, needs connect the sieve separator in the transportation, causes the structure complicacy, increases energy consumption, and requires highly to the wind pressure of fan in the transportation, and grain causes the jam easily in going out the grain pipe, is not convenient for adjust the position of grain placement.
Disclosure of Invention
The invention aims to solve the problems that grain can be screened only by connecting a grain pumping machine with a screening machine, the energy consumption is increased, and the blockage is easily caused, and aims to provide an intelligent grain pumping machine.
An intelligent grain pumping machine comprises a chassis, a device support, a conveying crawler belt and a control electronic box, wherein the upper surface of the chassis is provided with a turntable, the device support is fixed on the upper surface of the turntable, two groups of cross rods are arranged on two sides of the upper end of the device support, a first crawler belt shaft, a second crawler belt shaft and a third crawler belt shaft are sequentially arranged on the cross rods, the conveying crawler belt is sleeved between the first crawler belt shaft and the third crawler belt shaft, the second crawler belt shaft is positioned on the upper surface of the conveying crawler belt, a first driving motor is arranged in the middle of the device support and connected with the first crawler belt shaft through a hinge,
the grain pumping device is characterized in that a grain pumping support is arranged at the upper end of the middle of the device support, a blanking barrel is arranged on the upper portion of the grain pumping support, the blanking barrel is located between a second crawler shaft and a third crawler shaft, the upper end of the blanking barrel is connected with the grain pumping barrel, an air vane shaft is arranged inside the grain pumping barrel, the air vane shaft penetrates through the side wall of one side of the grain pumping barrel and is connected with a second driving motor through a hinge, the second driving motor is arranged on the upper portion of the grain pumping barrel, the air vane shaft is located at one end inside the grain pumping barrel and is connected with a fan blade, the grain pumping pipe is connected with the opening of the other side of the grain pumping barrel, the first driving motor and the second driving motor respectively pass through an electric connection control electric.
Furthermore, the end of the grain pumping pipe is provided with a conical plummet, and three support rods are arranged between the tail end of the conical plummet and the pipe orifice of the grain pumping pipe at equal angles along the axial direction of the grain pumping pipe.
Further, the cylindricality stopper is installed to the inside cavity tail end opening of toper plummet, solid fixed ring is installed to cylindricality stopper lateral part, solid fixed ring cover is on the solenoid, solenoid ring cover is connected at cylindricality stopper outside one end and is taken out the grain pipe other end and connect toper plummet.
Furthermore, a flexible rubber sleeve is embedded at the blade frame of the fan blade.
Further, guide plates are respectively installed on two sides of the grain pumping support, and the lower ends of the guide plates are located on the upper surface of the conveying crawler belt between the second crawler belt shaft and the third crawler belt shaft.
Furthermore, baffles are respectively arranged at two ends of the first crawler shaft, the second crawler shaft and the third crawler shaft.
The invention has the beneficial effects that:
according to the grain discharging device, the grain discharging barrel is connected with the grain discharging pipe, wind pressure formed by rotation of the fan blades in the grain discharging barrel is utilized to suck grains, the grains fall onto the crawler between the second crawler shaft and the third crawler shaft through the discharging barrel, the grains are thrown out under the action of inertia when passing through the first crawler shaft after running at a high speed through the crawler, the grains are conveyed, the blockage caused by overlong grain discharging pipe is avoided, the grains are screened according to different gravity of the grains and sundries in the throwing process, the structure is simple, the rotary table is arranged between the lower end of the device support and the base, and the grain falling point can be controlled.
The conical plummet is installed at the end of the grain pumping pipe, and three supporting rods are installed between the tail end of the conical plummet and the pipe opening of the grain pumping pipe at equal angles along the axis direction of the grain pumping pipe, so that the situation that the grain pumping pipe sucks the ground or the wall due to the action of suction force to block the grain pumping opening is avoided in the grain pumping process.
The cylindrical plug is installed through a hollow tail end opening in the conical plummet, the fixing ring is installed on the side portion of the cylindrical plug, the fixing ring is sleeved on the solenoid, when the air pressure of the grain pumping port needs to be adjusted, the cylindrical plug can be rotated on the solenoid through controlling the distance between the cylindrical plug and the grain pumping port to be increased or the area of the grain pumping port to be reduced, and the grain pumping air pressure is adjusted.
The flexible rubber sleeve is embedded in the blade frame of the fan blade, so that damage to grains in the rotating process of the fan blade is avoided.
The guide plates are respectively arranged on the two sides of the grain pumping support, and the lower ends of the guide plates are positioned on the upper surface of the conveying crawler belt between the second crawler belt shaft and the third crawler belt shaft, so that grains are prevented from sliding off from the two sides of the conveying crawler belt when falling off from the discharging barrel.
The baffle plates are respectively arranged at the two ends of the first crawler shaft, the second crawler shaft and the third crawler shaft, so that the conveying crawler is prevented from deviating during movement.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a structural view of the grain pumping barrel of the present invention;
FIG. 3 is a connection diagram of the grain pumping pipe and the conical plummet of the invention;
in the figure: 1. a chassis; 2. a device holder; 3. a conveying crawler belt; 4. controlling an electric box; 12. a cross bar; 13. a first track shaft; 14. a second track shaft; 15. a third track shaft; 16. a first drive motor; 17. a turntable; a blanking barrel; 22. a grain pumping barrel; 23. a fan blade shaft; 24. a second drive motor; 25. a fan blade; 26. a grain pumping pipe; 31. a conical lead weight; 32. a support bar; 33. a cylindrical plug; 34. a fixing ring; 35. a solenoid coil; 41. a material guide plate; 101. a flexible rubber sleeve; 102. and a baffle plate.
Detailed Description
The technical means, the creation features, the achievement purposes and the effects of the invention are easy to understand and understand, and the invention is further explained by combining the specific drawings.
Example 1
As shown in fig. 1; an intelligent grain pumping machine comprises a chassis 1, a device support 2, a conveying crawler 3 and a control electronic box 4, wherein a rotary table 17 is arranged on the upper surface of the chassis 1, the device support 2 is fixed on the upper surface of the rotary table 17, two groups of cross rods 12 are arranged on two sides of the upper end of the device support 2, a first crawler shaft 13, a second crawler shaft 14 and a third crawler shaft 15 are sequentially arranged on the cross rods 12, the conveying crawler 3 is annularly sleeved between the first crawler shaft 13 and the third crawler shaft 15, the second crawler shaft 14 is positioned on the upper surface of the conveying crawler 3, a first driving motor 16 is arranged in the middle of the device support 2, the first driving motor 16 is connected with the first crawler shaft 13 through a hinge,
on the basis of fig. 2, as shown in fig. 1; the grain pumping support is arranged at the upper end of the middle of the device support 2, the discharging barrel 21 is arranged on the upper portion of the grain pumping support 2, the discharging barrel 21 is located between the second crawler shaft 14 and the third crawler shaft 15, the upper end of the discharging barrel 21 is connected with the grain pumping barrel 22, the vane shaft 23 is arranged inside the grain pumping barrel 22, the vane shaft 23 penetrates through the side wall of one side of the grain pumping barrel 22 and is connected with the second driving motor 24 through a hinge, the second driving motor 24 is arranged on the upper portion of the grain pumping barrel 22, the vane shaft 23 is located at one end inside the grain pumping barrel 22 and is connected with the vane 25, the grain pumping pipe 26 is connected with the opening of the other side of the grain pumping barrel 22, the first driving motor 16 and the second driving motor 24 are respectively connected with the control electric box 4 through electric connection, and.
The frame of the fan blade 25 is embedded with a flexible rubber sleeve 101.
And guide plates 41 are respectively arranged on two sides of the grain pumping support, and the lower ends of the guide plates 41 are positioned on the upper surface of the conveying crawler 3 between the second crawler shaft 14 and the third crawler shaft 15.
The first caterpillar band shaft 13, the second caterpillar band shaft 14 and the third caterpillar band shaft 15 are respectively provided with a baffle plate 102 at two ends.
An intelligent grain extractor, the working principle is as follows:
when grain needs to be transported, the first driving motor 16 and the second driving motor 24 are controlled to rotate through the control electric box 4, the first driving motor 16 drives the first track shaft 13 to rotate through the hinge so as to drive the conveying track 3 to move, the second driving motor 24 is connected with the fan blade shaft 23 through the hinge, the fan blade shaft 23 rotates to drive the fan blade 25 to rotate so as to form wind pressure, grain enters the grain pumping barrel 22 through the grain pumping pipe 26 under the action of pressure and then flows out to the conveying track 3 between the second track shaft 14 and the third track shaft 15 through the discharging barrel 21, the grain moves on the conveying track 3 along the movement direction of the conveying track 3 under the extrusion of the second track shaft 14, and when the grain is transported to the position of the first track shaft 13, the grain is thrown out in the horizontal direction under the action of inertia of the grain so as to transport the grain.
Example 2
As shown in fig. 1; an intelligent grain pumping machine comprises a chassis 1, a device support 2, a conveying crawler 3 and a control electronic box 4, wherein a rotary table 17 is arranged on the upper surface of the chassis 1, the device support 2 is fixed on the upper surface of the rotary table 17, two groups of cross rods 12 are arranged on two sides of the upper end of the device support 2, a first crawler shaft 13, a second crawler shaft 14 and a third crawler shaft 15 are sequentially arranged on the cross rods 12, the conveying crawler 3 is annularly sleeved between the first crawler shaft 13 and the third crawler shaft 15, the second crawler shaft 14 is positioned on the upper surface of the conveying crawler 3, a first driving motor 16 is arranged in the middle of the device support 2, the first driving motor 16 is connected with the first crawler shaft 13 through a hinge,
on the basis of fig. 2, as shown in fig. 1; the grain pumping support is arranged at the upper end of the middle of the device support 2, the discharging barrel 21 is mounted on the upper portion of the grain pumping support, the discharging barrel 21 is located between the second crawler shaft 14 and the third crawler shaft 15, the upper end of the discharging barrel 21 is connected with the grain pumping barrel 22, the vane shaft 23 is mounted inside the grain pumping barrel 22, the vane shaft 23 penetrates through the side wall of one side of the grain pumping barrel 22 and is connected with the second driving motor 24 through a hinge, the second driving motor 24 is mounted on the upper portion of the grain pumping barrel 22, the vane shaft 23 is located at one end inside the grain pumping barrel 22 and is connected with the vane 25, the grain pumping barrel 22 is laterally connected with the grain pumping pipe 26 through the other side of the grain pumping barrel, the first driving motor 16 and the second driving motor 24 are respectively connected with the control electric box 4 through electric.
The frame of the fan blade 25 is embedded with a flexible rubber sleeve 101.
And guide plates 41 are respectively arranged on two sides of the grain pumping support, and the lower ends of the guide plates 41 are positioned on the upper surface of the conveying crawler 3 between the second crawler shaft 14 and the third crawler shaft 15.
The first caterpillar band shaft 13, the second caterpillar band shaft 14 and the third caterpillar band shaft 15 are respectively provided with a baffle plate 102 at two ends.
An intelligent grain extractor, the working principle is as follows:
when grain needs to be transported, the first driving motor 16 and the second driving motor 24 are controlled to rotate through the control electric box 4, the first driving motor 16 drives the first track shaft 13 to rotate through the hinge so as to drive the conveying track 3 to move, the second driving motor 24 is connected with the fan blade shaft 23 through the hinge, the fan blade shaft 23 rotates to drive the fan blade 25 to rotate so as to form wind pressure, grain enters the grain pumping barrel 22 through the grain pumping pipe 26 under the action of pressure and then flows out to the conveying track 3 between the second track shaft 14 and the third track shaft 15 through the discharging barrel 21, the grain moves on the conveying track 3 along the movement direction of the conveying track 3 under the extrusion of the second track shaft 14, and when the grain is transported to the position of the first track shaft 13, the grain is thrown out in the horizontal direction under the action of inertia of the grain so as to transport the grain.
As shown in fig. 3; the end of the grain-pumping pipe 26 is provided with a conical lead weight 31, and three support rods 32 are arranged between the tail end of the conical lead weight 31 and the pipe orifice of the grain-pumping pipe 26 at equal angles along the axial direction of the grain-pumping pipe 26. The blockage of the grain suction port caused by the fact that the grain suction pipe sucks the ground or the wall under the suction force in the grain suction process is avoided.
The conical plummet 31 is internally provided with a hollow tail end opening provided with a cylindrical plug 33, the side part of the cylindrical plug 33 is provided with a fixing ring 34, the fixing ring 34 is sleeved on a solenoid 35, one end of the solenoid 35, sleeved on the outer side of the cylindrical plug 33, is connected with the grain pumping pipe 26, and the other end of the solenoid is connected with the conical plummet 31. When the air pressure of the grain pumping port needs to be adjusted, the cylindrical plug can be rotated on the solenoid coil, the distance between the cylindrical plug and the grain pumping port is controlled to increase or reduce the area of the grain pumping port, and the grain pumping air pressure is adjusted.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides an intelligence grain extractor which characterized in that: the device comprises a chassis (1), a device support (2), a conveying crawler (3) and a control electronic box (4), wherein a turntable (17) is installed on the upper surface of the chassis (1), the device support (2) is fixed on the upper surface of the turntable (17), two groups of cross rods (12) are arranged on two sides of the upper end of the device support (2), a first crawler shaft (13), a second crawler shaft (14) and a third crawler shaft (15) are sequentially installed on the cross rods (12), the conveying crawler (3) is annularly sleeved between the first crawler shaft (13) and the third crawler shaft (15), the second crawler shaft (14) is located on the upper surface of the conveying crawler (3), a first driving motor (16) is installed in the middle of the device support (2), the first driving motor (16) is connected with the first crawler shaft (13) through a hinge,
the upper end of the middle part of the device bracket (2) is provided with a grain pumping bracket, the upper part of the grain pumping bracket is provided with a discharging barrel (21), the blanking barrel (21) is positioned between the second crawler shaft (14) and the third crawler shaft (15), the upper end of the blanking barrel (21) is connected with a grain pumping barrel (22), a fan blade shaft (23) is arranged in the grain pumping barrel (22), the fan blade shaft (23) penetrates through the side wall of one side of the grain pumping barrel (22) and is connected with a second driving motor (24) through a hinge, the second driving motor (24) is arranged at the upper part of the grain pumping barrel (22), one end of the fan blade shaft (23) positioned inside the grain pumping barrel (22) is connected with the fan blade (25), the opening at the other side of the grain pumping barrel (22) is connected with a grain pumping pipe (26), the first driving motor (16) and the second driving motor (24) are respectively electrically connected with the control electric box (4), and the control electric box (4) is arranged at one side of the device bracket (2);
a conical lead weight (31) is arranged at the end of the grain pumping pipe (26), and three support rods (32) are arranged between the tail end of the conical lead weight (31) and the pipe orifice of the grain pumping pipe (26) at equal angles along the axial direction of the grain pumping pipe (26);
a hollow tail end opening in the conical plummet (31) is provided with a cylindrical plug (33), the side part of the cylindrical plug (33) is provided with a fixing ring (34), the fixing ring (34) is sleeved on a solenoid (35), one end of the solenoid (35) sleeved on the outer side of the cylindrical plug (33) is connected with a grain pumping pipe (26), and the other end of the solenoid is connected with the conical plummet (31);
the blade frame of the fan blade (25) is embedded with a flexible rubber sleeve (101).
2. The intelligent grain extractor of claim 1, wherein: guide plates (41) are respectively installed on two sides of the grain pumping support, and the lower ends of the guide plates (41) are located on the upper surface of the conveying crawler (3) between the second crawler shaft (14) and the third crawler shaft (15).
3. The intelligent grain extractor of claim 1, wherein: and two ends of the first crawler shaft (13), the second crawler shaft (14) and the third crawler shaft (15) are respectively provided with a baffle (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770170.6A CN108861603B (en) | 2018-07-13 | 2018-07-13 | Intelligent grain pumping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770170.6A CN108861603B (en) | 2018-07-13 | 2018-07-13 | Intelligent grain pumping machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108861603A CN108861603A (en) | 2018-11-23 |
| CN108861603B true CN108861603B (en) | 2020-03-27 |
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ID=64301879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810770170.6A Active CN108861603B (en) | 2018-07-13 | 2018-07-13 | Intelligent grain pumping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108861603B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465877A (en) * | 2002-06-18 | 2004-01-07 | 哈特斯莱・纽曼・亨德有限公司 | Flow control valve |
| AU2006334658B2 (en) * | 2006-01-11 | 2011-04-14 | Paul Wurth S.A. | Flow control valve for fluidized material |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4134824A1 (en) * | 1991-10-22 | 1993-04-29 | Battenfeld Kunststoffmasch | DEVICE FOR CONVEYING GRAINY AND / OR POWDERY SOLIDS |
| CN204110927U (en) * | 2014-07-21 | 2015-01-21 | 安徽省界首市云龙粮机配套工程有限公司 | A kind of grain elevator |
| CN105668241A (en) * | 2016-02-26 | 2016-06-15 | 蚌埠市丰源粮油食品贸易有限公司 | Grain elevator |
| CN205855384U (en) * | 2016-06-13 | 2017-01-04 | 杨红炜 | Portable Automatic receipts grain device |
| CN206857725U (en) * | 2017-06-12 | 2018-01-09 | 宿迁柏特粮食设备有限公司 | A kind of revolution suction pipe of grain absorber |
| CN108045991A (en) * | 2017-12-25 | 2018-05-18 | 界首市金龙机械设备有限公司 | Intelligently close a position robot |
-
2018
- 2018-07-13 CN CN201810770170.6A patent/CN108861603B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465877A (en) * | 2002-06-18 | 2004-01-07 | 哈特斯莱・纽曼・亨德有限公司 | Flow control valve |
| AU2006334658B2 (en) * | 2006-01-11 | 2011-04-14 | Paul Wurth S.A. | Flow control valve for fluidized material |
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| Publication number | Publication date |
|---|---|
| CN108861603A (en) | 2018-11-23 |
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