CN204264939U - Solid granule conveying test device - Google Patents
Solid granule conveying test device Download PDFInfo
- Publication number
- CN204264939U CN204264939U CN201420751658.1U CN201420751658U CN204264939U CN 204264939 U CN204264939 U CN 204264939U CN 201420751658 U CN201420751658 U CN 201420751658U CN 204264939 U CN204264939 U CN 204264939U
- Authority
- CN
- China
- Prior art keywords
- discharging opening
- hopper
- auger
- weighing
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
A kind of solid granule conveying test device, part flow arrangement is provided with below the discharging opening of test auger, switchable first discharging opening and the second discharging opening is provided with bottom part flow arrangement, be provided with first below first discharging opening to weigh hopper, be provided with second below second discharging opening to weigh hopper, first hopper of weighing is positioned at above the inlet point of the first circulation auger, and the second hopper of weighing is positioned at above the inlet point of the second circulation auger.A kind of method adopting above-mentioned experimental set-up to carry out carrying test, comprise the following steps: by part flow arrangement cyclic switching to the first discharging opening or the second discharging opening, utilize static weighing to obtain accurate weight of material, thus obtain the average discharge in the time period.The utility model can obtain high-precision mass transport instant flow rate and integrated flux, and error is less than millesimal.Thus experimentally data can be optimized design to feedway, improve transportation performance; And this experimental set-up can be utilized, the transportation performance rating test before dispatching from the factory.
Description
Technical field
The utility model relates to conveying test device field, particularly a kind of solid granule conveying test device.
Background technology
In oil drilling and extracting equipment, screw conveyer is the significant components of pressure break blending equipment, the screw conveyer used in prior art and auger, primarily of HM Hydraulic Motor or motor, turnover hopper and these three parts of helix transporting device composition.Its groundwork index is driving power, sediment transport amount, transport efficiency.And the parameter affecting above-mentioned working index mainly contains the parameters such as speed of screw shaft, helicallobe diameter, pitch, screw shaft diameter and auger loader angle of inclination, gap.Construction parameter for studying screw conveyer and working parameter can being tested on the impact of working index by experimental set-up, finding the inner link of construction parameter and working index, thus providing practical basis for designing high efficiency energy-saving sand conveying device.
The parameter such as slope coefficient, fullness coefficient, frictional behavior of high spud angle conveyor screw that can be for reference is not had in prior art; More not for the multifunctional circulation sediment transport experimental set-up at varistructure parameter, working parameter and conveying inclination angle.
Chinese patent literature CN 102419257 A discloses a kind of pressure break blending equipment sediment transport experimental set-up, describe a kind of circulation sand conveying device, have employed solid flowmeter to measure instant flow rate and integrated flux, Problems existing is, the precision of solid flowmeter is too low, error is comparatively large, and combined error reaches 5% ~ 10%, is difficult to the object realizing test.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of solid granule conveying test device, can realize the accurate measurement of instant flow rate and integrated flux, thus Accurate Measurement rotating speed, helicallobe diameter, screw shaft diameter, pitch, gap and inclination angle are on the single factor test of mass transport and Multifactor Combination impact.The conveying test before auger loader product export and Calibration can also be used for, pass through when being convenient to onsite application to change rotating speed to the accurate control of mass transport amount.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of solid granule conveying test device, part flow arrangement is provided with below the discharging opening of test auger, switchable first discharging opening and the second discharging opening is provided with bottom part flow arrangement, be provided with first below first discharging opening to weigh hopper, be provided with second below second discharging opening to weigh hopper, the first hopper of weighing is positioned at above the inlet point of the first circulation auger, and the second hopper of weighing is positioned at above the inlet point of the second circulation auger;
The discharging opening of the first circulation auger and the second circulation auger is positioned at the top of storage bin hopper, and storage bin hopper is positioned at above the inlet point of test auger.
Described test auger is provided with torque sensor and angular velocity sensor, and torque sensor and angular velocity sensor are electrically connected with harvester.
Described first hopper and second hopper of weighing of weighing is bearing on support respectively by multiple LOAD CELLS, and LOAD CELLS is electrically connected with harvester, and the first weigh hopper and the second bottom of weighing hopper is respectively equipped with gate.
In described part flow arrangement, be provided with rotating shaft at the connecting portion of the first discharging opening and the second discharging opening, rotating shaft is fixedly connected with cutting plate, and the termination of rotating shaft is fixedly connected with driving wheel, driving wheel is connected by flexible drive parts with flower wheel, drives cylinder to be connected with flexible drive parts.
The two ends in cylinder block are driven to be rod chamber.
In described part flow arrangement, be provided with rotating shaft at the connecting portion of the first discharging opening and the second discharging opening, rotating shaft is fixedly connected with cutting plate, in the termination of rotating shaft, connecting rod is set, drive cylinder and rod hinge connection, by driving the fore and aft motion of cylinder, drive shaft and cutting plate rotate.
The top of part flow arrangement is a point hopper, is provided with stock guide in the both sides of point hopper and the first discharging opening and the second discharging opening connecting portion.
Inlet point one end of test auger and base plate hinged or spacing by the limiting stopper on base plate, the middle part of test auger is provided with liftable inclination-angle regulating device.
In described inclination-angle regulating device, seat board and base plate hinged, seat board is provided with rotatable not axially displaceable worm gear and nut, and the outer wall engagement of worm and wheel nut, the inwall of worm gear and nut is connected with screw flight, and screw rod is hinged with the middle part of test auger.
A kind of solid granule conveying test device that the utility model provides, by adopting above-mentioned device, by the method for circulation static weighing, can obtain high-precision mass transport instant flow rate and integrated flux, error is less than millesimal.Thus experimentally data can be optimized design to feedway, improve transportation performance.And this experimental set-up can be utilized, the transportation performance rating test before dispatching from the factory.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is left TV structure schematic diagram of the present utility model.
Fig. 3 is the close-up schematic view of part flow arrangement in the utility model.
Fig. 4 is the structural representation of inclination-angle regulating device in the utility model.
Fig. 5 is test method diagram of circuit of the present utility model.
Fig. 6 is the diagram of circuit of weighing utilizing part flow arrangement in the utility model.
Fig. 7 is perspective view of the present utility model.
In figure: part flow arrangement 1, divide hopper 101, stock guide 102, cutting plate 103, driving wheel 104, flower wheel 105, drive cylinder 106, flexible drive parts 107, first discharging opening 108, second discharging opening 109, rotating shaft 110, first weighs hopper 2, LOAD CELLS 21, self-shooter 22, second weighs hopper 2', inclination-angle regulating device 3, inclination angle free bearing 31, nut seat free bearing 32, seat board 33, worm gear and nut 34, worm screw 35, handle 36, limiting stopper 37, screw rod 38, test auger 4, torque sensor 41, angular velocity sensor 42, discharging opening 43, inlet point 44, spacing column 5, first circulation auger 6, second circulation auger 6', storage bin hopper 7, base plate 8, support 9.
Detailed description of the invention
Embodiment 1:
As in Fig. 1 ~ 4,7, a kind of solid granule conveying test device, part flow arrangement 1 is provided with below the discharging opening 43 of test auger 4, switchable first discharging opening 108 and the second discharging opening 109 is provided with bottom part flow arrangement 1, be provided with first below first discharging opening 108 to weigh hopper 2, be provided with second below second discharging opening 109 to weigh hopper 2', the first hopper 2 of weighing is positioned at above the inlet point of the first circulation auger 6, and the second hopper 2' that weighs is positioned at above the inlet point of the second circulation auger 6'; Preferably, described first the hopper 2 and second hopper 2' that weighs that weighs is bearing on support 9 respectively by multiple LOAD CELLS 21, and LOAD CELLS 21 is electrically connected with harvester, and the first weigh hopper 2 and the second bottom of weighing hopper 2' is respectively equipped with gate.Adopt in this example by the self-shooter 22 of air cylinder driven.
The discharging opening of the first circulation auger 6 and the second circulation auger 6' is positioned at the top of storage bin hopper 7, and storage bin hopper 7 is positioned at above the inlet point 44 of test auger 4.Structure thus, from the material that test auger 4 exports, such as quarz sand through first weigh hopper 2 and second weigh hopper 2' accurate measurement after, storage bin hopper 7 is delivered to again through the first circulation auger 6 and the second circulation auger 6', thus realize cyclic test, with within the longer time period, obtain more accurate test figures, or by the longer time, test the impact of each test parameters on test auger 4 convey materials.
Described test auger 4 is provided with torque sensor 41 and angular velocity sensor 42, and torque sensor 41 and angular velocity sensor 42 are electrically connected with harvester.Structure thus, is convenient to realize automatically controlling by PLC or industrial computer, reduces the labour intensity in process of the test.Preferably, test auger 4 is provided with variable-frequency motor, by the speed of change, thus the test auger 4 under measurement different parameters, moment of torsion at various speeds, can feed back the error of actual speed and frequency converter output speed by angular velocity sensor 42, to realize optimal design.
Part flow arrangement 1 has more in the prior art, such as conventional material diversion device, the preferred scheme of this example as shown in Figure 3, in described part flow arrangement 1, rotating shaft 110 is provided with at the connecting portion of the first discharging opening 108 and the second discharging opening 109, rotating shaft 110 is fixedly connected with cutting plate 103, cutting plate 103 in this example preferably adopts cross-sectional plane to be indent arc, structure thus, in Flow of Goods and Materials, material concentrates on the axis of cutting plate 103, thus reduces the seal request between cutting plate 103 and the housing of part flow arrangement 1.
In this example, the housing that part flow arrangement 1 is stretched out in the termination of rotating shaft 110 is fixedly connected with driving wheel 104, driving wheel 104 is connected by flexible drive parts 107 with flower wheel 105, flexible drive parts 107 in this example comprises chain, toothed belt or V-belt etc., drives cylinder 106 to be connected with flexible drive parts 107.In this example, by chain drive or belt gear, by driving the straight-line motion of cylinder 106 to be converted to rotary motion, especially in switching process, there is buffering and avoid damaging parts.In figure as left in Fig. 3, when driving the piston rod of cylinder 106 to stretch out, drive flexible drive parts 107 to left movement, thus drive driving wheel 104 clickwise, rotating shaft 110 clickwise corresponding to cutting plate 103, thus complete the switching of cutting plate 103, as shown in right in Figure 3.Material channel is switched to the second discharging opening 109.
Interchangeable, also can arrange connecting rod in the termination of rotating shaft 110, drive cylinder 106 and rod hinge connection, by driving the fore and aft motion of cylinder 106, drive shaft 110 and cutting plate 103 rotate.But in the structure shown here, cutting plate 103 rotate to be variable-speed motion, the impact of the symmetrical heavy burder bucket of stream can be affected, thus affect weighing precision.And adopt driving cylinder 106 to drive the reciprocating mode of flexible drive parts 107, be then uniform movement.
Preferred further, drive the two ends in cylinder 106 cylinder body to be rod chamber, namely drive the piston rod of cylinder 106 in operational process, all to run through whole cylinder body, structure thus, guarantee that speed when cutting plate 103 switches to both sides is identical, thus improve weighing precision.
Preferred scheme is as in Fig. 3, the top of part flow arrangement 1 is a point hopper 101, stock guide 102 is provided with in the both sides of point hopper 101 and the first discharging opening 108 and the second discharging opening 109 connecting portion, structure thus, avoid the gap between cutting plate 103 and point hopper 101 to cause material from leakage, thus weigh inaccurate.In the utility model, the advantage of part flow arrangement 1 is that switching controls is convenient, without leaking material, thus being beneficial to measurement accurately, requiring low to parts size precision.
As in Fig. 4, inlet point 44 one end of test auger 4 is with base plate 8 is hinged or spacing by the limiting stopper 37 on base plate 8, and the middle part of testing auger 4 is provided with liftable inclination-angle regulating device 3.
In preferred scheme, in described inclination-angle regulating device 3, seat board 33 is hinged with base plate 8, seat board 33 is provided with rotatable not axially displaceable worm gear and nut 34, as shown in Figure 4, worm gear and nut 34 is by movable inlaying in seat board 33 housing, and the two ends of worm gear and nut 34 arrange thrust baring, to make worm gear and nut 34 rotate, can not longitudinal travel.Worm screw 35 engages with the outer wall of worm gear and nut 34, to drive worm gear and nut 34 to rotate by worm screw 35, the inwall of worm gear and nut 34 is threaded with screw rod 38, with the rotation by worm gear and nut 34, drive screw 38 is elevated, and screw rod 38 is hinged with the middle part of test auger 4.Structure thus, can regulate the inclination angle of test auger 4 easily, can electrodeless adjustment between 35 degree to 55 degree.In this example, worm gear and nut combinations are become a part, simplify the structure, be also convenient to realize inclination-angle regulating device self-locking.Have employed the scheme that handle 36 carries out regulating in figure, it is also feasible for adopt motor or fluid motor-driven worm screw 35 to rotate carrying out regulating.In this example, spacing column 5 defines two side positions of test auger 4, and test auger 4 only can be slided between spacing column 5.
Embodiment 2:
On the basis of embodiment 1, as shown in Figure 5,6, a kind of method adopting above-mentioned experimental set-up to carry out carrying test, comprises the following steps:
One, set the inclination angle of test auger 4 by inclination-angle regulating device 3, part flow arrangement 1 is switched to the first discharging opening 108, now the first closing gate of weighing hopper 2, as shown in the left figure in Fig. 3;
Two, inlet point 44 feed of test auger 4 given by storage bin hopper 7, preferably, the discharging opening of storage bin hopper 7 is positioned at below inlet point 44 top of test auger 4, so that realize without the need to controlling ground continuous feeding, variable-frequency motor on test auger 4 or HM Hydraulic Motor start feeding, setting time opening t
0, material is discharged to part flow arrangement 1 from the discharging opening 43 of test auger 4, and be drained into first through the first discharging opening 108 and weigh in hopper 2, now the first LOAD CELLS 21 of weighing hopper 2 starts to weigh; Preferably before LOAD CELLS 21 sets, be set to zero by including whole first weight of weighing hopper assembly, thus, be convenient to later stage calculating, again make zero in use for some time.
Three, when the numerical value collecting LOAD CELLS 21 reaches setting value, such as material 10 fill whole first weigh hopper 2 85% time, part flow arrangement 1 starts to switch cutting plate 103 to the second discharging opening 109, input from cutting plate 103 owing to now still having clout, LOAD CELLS 21 continues to weigh, until the first LOAD CELLS 21 of weighing hopper 2 is weighed obtain maxim, and when weight no longer increases, obtained being transported to the first time period of weighing hopper 2, now cutting plate 103 rotates through horizontal surface.Owing to have employed static accurate weighing, accurately instant flow rate can be obtained by time-sharing measurement, accurately can measure the impact on feed flow after speed change by speed change in this process.As shown in Figure 6, to be weighed the weight maxim obtained by LOAD CELLS 21, divided by this time period, accurate average discharge can be obtained.Then open the first self-shooter 22 discharge to the first circulation auger 6 of weighing hopper 2, start to record while the first time period of weighing hopper 2 obtained and be transported to for the second time of weighing hopper 2';
Four, after cutting plate 103 switching of part flow arrangement 1 puts in place, as shown in the right figure in Fig. 3, material 10 is drained into second through the second discharging opening 109 and weighs in hopper 2', LOAD CELLS 21 starts to weigh, when the numerical value collecting LOAD CELLS 21 reaches setting value, part flow arrangement 1 is switched to the first discharging opening 108 again;
Five, second weigh hopper 2' LOAD CELLS 21 weigh and obtain maxim, and obtained being transported to the second time period of weighing hopper 2', then starting gate discharge to the second circulation auger 6';
Circulation like this, accurately records the weight of material that test auger 4 is carried in a period of time, thus the instant flow rate obtained in this time period and average discharge.Through repeatedly circulating for a long time, more accurate average discharge can be obtained, or obtain long-play to the impact of equipment parameters.
In step 3 and step 5, the first circulation auger 6 and the second circulation auger 6' convey materials are to storage bin hopper 7, and inlet point 44 feed of test auger 4 given by storage bin hopper 7, forms circulation.
In preferred scheme, test auger 4 is provided with variable-frequency motor, and torque sensor 41 and the angular velocity sensor 42 of setting form closed loop control with variable-frequency motor by PLC or industrial computer.Such as fed back the output speed of variable-frequency motor by angular velocity sensor 42, to realize the closed loop control of permanent rotating speed, by setting torque rating, realize the closed loop control of permanent moment of torsion.
The above embodiments are only optimal technical scheme of the present utility model; and should not be considered as restriction of the present utility model; the technical scheme that protection domain of the present utility model should be recorded with claim, the equivalents comprising technical characteristic in the technical scheme of claim record is protection domain.Namely the equivalent replacement within the scope of this improves, also within protection domain of the present utility model.
Claims (9)
1. a solid granule conveying test device, it is characterized in that: discharging opening (43) below of test auger (4) is provided with part flow arrangement (1), part flow arrangement (1) bottom is provided with switchable first discharging opening (108) and the second discharging opening (109), first discharging opening (108) below is provided with first and weighs hopper (2), second discharging opening (109) below is provided with second and weighs hopper (2'), first hopper (2) of weighing is positioned at above the inlet point of the first circulation auger (6), (2') second hopper of weighing is positioned at above the second circulation auger inlet point (6'), first circulation auger (6) and the second circulation auger discharging opening are (6') positioned at the top of storage bin hopper (7), and storage bin hopper (7) is positioned at inlet point (44) top of test auger (4).
2. a kind of solid granule conveying test device according to claim 1, it is characterized in that: described test auger (4) is provided with torque sensor (41) and angular velocity sensor (42), torque sensor (41) and angular velocity sensor (42) are electrically connected with harvester.
3. a kind of solid granule conveying test device according to claim 1, it is characterized in that: (2') the described first hopper (2) and second hopper of weighing of weighing is bearing on support (9) respectively by multiple LOAD CELLS (21), LOAD CELLS (21) is electrically connected with harvester, and the first hopper (2) and second hopper bottom (2') of weighing of weighing is respectively equipped with gate.
4. a kind of solid granule conveying test device according to claim 1, it is characterized in that: in described part flow arrangement (1), rotating shaft (110) is provided with at the connecting portion of the first discharging opening (108) and the second discharging opening (109), rotating shaft (110) is fixedly connected with cutting plate (103), the termination of rotating shaft (110) is fixedly connected with driving wheel (104), driving wheel (104) is connected by flexible drive parts (107) with flower wheel (105), drives cylinder (106) to be connected with flexible drive parts (107).
5. a kind of solid granule conveying test device according to claim 4, is characterized in that: drive the two ends in cylinder (106) cylinder body to be rod chamber.
6. a kind of solid granule conveying test device according to claim 1, it is characterized in that: in described part flow arrangement (1), rotating shaft (110) is provided with at the connecting portion of the first discharging opening (108) and the second discharging opening (109), rotating shaft (110) is fixedly connected with cutting plate (103), in the termination of rotating shaft (110), connecting rod is set, drive cylinder (106) and rod hinge connection, by driving the fore and aft motion of cylinder (106), drive shaft (110) and cutting plate (103) rotate.
7. a kind of solid granule conveying test device according to claim 4, it is characterized in that: the top of part flow arrangement (1) is a point hopper (101), is provided with stock guide (102) at point hopper (101) and the both sides of the first discharging opening (108) and the second discharging opening (109) connecting portion.
8. a kind of solid granule conveying test device according to claim 1, it is characterized in that: inlet point (44) one end of test auger (4) is with base plate (8) is hinged or spacing by the limiting stopper (37) on base plate (8), and the middle part of testing auger (4) is provided with liftable inclination-angle regulating device (3).
9. a kind of solid granule conveying test device according to claim 8, it is characterized in that: in described inclination-angle regulating device (3), seat board (33) is hinged with base plate (8), seat board (33) is provided with rotatable not axially displaceable worm gear and nut (34), worm screw (35) engages with the outer wall of worm gear and nut (34), the inwall of worm gear and nut (34) is threaded with screw rod (38), and screw rod (38) is hinged with the middle part of test auger (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420751658.1U CN204264939U (en) | 2014-12-04 | 2014-12-04 | Solid granule conveying test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420751658.1U CN204264939U (en) | 2014-12-04 | 2014-12-04 | Solid granule conveying test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204264939U true CN204264939U (en) | 2015-04-15 |
Family
ID=52799820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420751658.1U Active CN204264939U (en) | 2014-12-04 | 2014-12-04 | Solid granule conveying test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204264939U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773476A (en) * | 2014-12-04 | 2015-07-15 | 中石化石油工程机械有限公司第四机械厂 | Solid bulk conveyance tester |
| CN112179689A (en) * | 2020-09-01 | 2021-01-05 | 哈尔滨商业大学 | Flexible discrete helical blade conveying test bed and method for conveying granular materials |
| RU2763123C1 (en) * | 2020-07-23 | 2021-12-27 | Федеральное государственное унитарное предприятие «Всероссийский научно-исследовательский институт метрологии им. Д.И.Менделеева» | System providing testing and verification of a weight measurement apparatus, method for testing and verification of a weight measurement apparatus |
-
2014
- 2014-12-04 CN CN201420751658.1U patent/CN204264939U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773476A (en) * | 2014-12-04 | 2015-07-15 | 中石化石油工程机械有限公司第四机械厂 | Solid bulk conveyance tester |
| RU2763123C1 (en) * | 2020-07-23 | 2021-12-27 | Федеральное государственное унитарное предприятие «Всероссийский научно-исследовательский институт метрологии им. Д.И.Менделеева» | System providing testing and verification of a weight measurement apparatus, method for testing and verification of a weight measurement apparatus |
| CN112179689A (en) * | 2020-09-01 | 2021-01-05 | 哈尔滨商业大学 | Flexible discrete helical blade conveying test bed and method for conveying granular materials |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104555356B (en) | The continuous carrying method of accurate weighing | |
| CN104477609B (en) | Elevator bucket conveyer experimental rig and method | |
| CN204264939U (en) | Solid granule conveying test device | |
| CN104477629B (en) | Sand conveyor test device and method | |
| CN104773476A (en) | Solid bulk conveyance tester | |
| CN104229167A (en) | Weighing feeder | |
| CN104444222B (en) | Accurate weighing continuous conveying device | |
| CN103196790B (en) | Cereal unit weight automatic measuring equipment and method | |
| CN104444263A (en) | Solid granule conveying and testing method | |
| CN204341939U (en) | Sediment transport machine experimental set-up | |
| CN204264919U (en) | Elevator bucket conveyer experimental set-up | |
| CN201752228U (en) | Material blending auger device | |
| CN201753444U (en) | Self-control belt conveying scraping-throwing type sand feeding machine | |
| CN204286564U (en) | A kind of extra quality door bulk cargo scale | |
| CN203489955U (en) | Powder quantitative weighing machine | |
| CN212314088U (en) | Red oil bean cotyledon liquid filling machine | |
| CN204078099U (en) | One is weighed blanking device | |
| CN112278622B (en) | Sand weighing hopper | |
| CN110143416B (en) | Intelligent sampling device for belt conveyor material transportation, intelligent sampling control method and system | |
| CN102192775A (en) | Powder particle metering machine capable of accurately metering | |
| CN203682650U (en) | Weightless type feeding machine | |
| CN207964040U (en) | Powder metering equipment and automatic production line | |
| CN217730839U (en) | Auger self-locking discharge valve for metering | |
| CN202783811U (en) | Stowing machine high-precision blanking device | |
| CN204682193U (en) | A kind of granulated meal delivery device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200427 Address after: 434020 No. 1 Longshan Temple Street, Jingzhou District, Jingzhou, Hubei Co-patentee after: Yangtze University Patentee after: SINOPEC SIJI PETROLEUM MACHINERY Co.,Ltd. Co-patentee after: SINOPEC OILFIELD EQUIPMENT Corp. Address before: 434023 Longshan temple, Ximen, Jingzhou District, Jingzhou City, Hubei Province Co-patentee before: Yangtze University Patentee before: SJ PETROLEUM MACHINERY CO., LTD. SINOPEC |
|
| TR01 | Transfer of patent right |