CN108928604B - Vibration feeding device - Google Patents

Vibration feeding device Download PDF

Info

Publication number
CN108928604B
CN108928604B CN201710389170.7A CN201710389170A CN108928604B CN 108928604 B CN108928604 B CN 108928604B CN 201710389170 A CN201710389170 A CN 201710389170A CN 108928604 B CN108928604 B CN 108928604B
Authority
CN
China
Prior art keywords
receiving hopper
bracket
cylinder
feeding
swing cylinder
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
Application number
CN201710389170.7A
Other languages
Chinese (zh)
Other versions
CN108928604A (en
Inventor
何文莉
张宏维
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangxi Guangming Intelligent Technology Co ltd
Original Assignee
Jiangxi Guangming Intelligent Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangxi Guangming Intelligent Technology Co ltd filed Critical Jiangxi Guangming Intelligent Technology Co ltd
Priority to CN201710389170.7A priority Critical patent/CN108928604B/en
Publication of CN108928604A publication Critical patent/CN108928604A/en
Application granted granted Critical
Publication of CN108928604B publication Critical patent/CN108928604B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G27/00Jigging conveyors
    • B65G27/10Applications of devices for generating or transmitting jigging movements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigging Conveyors (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

The invention relates to a vibratory feeding device comprising: a receiving hopper which is arranged at the upper end, is used for loading samples and is provided with a receiving hopper nozzle for discharging materials; the vibrator is connected with the receiving hopper and used for driving the receiving hopper to vibrate and driving a sample in the receiving hopper to vibrate and output from the receiving hopper mouth; and the inclined feeding mechanism is arranged below the vibrator and is used for inclining the receiving hopper and dumping the sample. The vibration feeding device can continuously and accurately control the feeding flow according to the preset standard weight, adopts a vibration mode for feeding, achieves the purpose of slow feeding, and is convenient to control.

Description

Vibration feeding device
Technical Field
The invention relates to a sample feeding device used in the field of sample preparation, in particular to a vibration feeding device capable of slowly feeding by controlling flow in a vibration mode.
Background
In the field of sample preparation, the water content of a sample needs to be measured, which comprises the steps of weighing, drying, data calculation and the like, and the water content of the sample can be accurately measured through the calculation of the change of the weight and the drying.
However, in the prior art, manual sampling is typically used for testing in a laboratory. Therefore, the inventor developed an online moisture measurement system that can perform the steps of feeding, sampling, weighing, drying, calculating, etc. online. ,
Specifically, patent application number 201520534891.9 of the applicant of the present invention discloses a sampling device, comprising a belt conveyor, a dividing machine and a blanking device, wherein the dividing machine is arranged on the belt conveyor, and the blanking device is connected to one side of the belt conveyor and is aligned with the dividing machine. When the sample feeding device works, the belt conveyor conveys samples along the Z axis, the conveying belt stops when sampling is needed, the dividing machine starts to work, the cutting hopper descends along the Y axis direction, the lower side of the cutting hopper cuts off the samples, the cutting hopper moves along the X axis direction, the hairbrush on the cutting hopper brushes the upper surface of the conveying belt along the X axis direction, and the samples of a transverse strip are scanned into the material receiving opening of the blanking device; the sample entering the blanking device falls down along the chute into the sample tray on the sample tray bracket.
Therefore, the feeding part in the sampling device cuts off the sample on the belt conveyor at one time by the cutting hopper, then the cutting hopper moves along the X-axis direction, the brush on the cutting hopper brushes the upper surface of the conveying belt along the X-axis direction, and the sample of a transverse bar is scanned into the receiving opening of the blanking device; it can be seen that this has the following problems:
first, such feeding by operation of the conveyor belt and the dividing machine is not performed by the cleaning method, and the flow rate of feeding cannot be precisely controlled, and feeding cannot be performed slowly.
Secondly, the one-time interception and cleaning mode in the feeding process cannot realize fine feeding, and particularly in the feeding process matched with accurate weighing, the feeding process is required to be carried out slowly and continuously, that is, the feeding weight cannot be controlled.
Disclosure of Invention
The present invention is directed to a vibratory feeding device, which overcomes the above-mentioned drawbacks.
To achieve the above object, the present invention provides a vibratory feeding device comprising:
a receiving hopper which is arranged at the upper end, is used for loading samples and is provided with a receiving hopper nozzle for discharging materials;
The vibrator is connected with the receiving hopper and used for driving the receiving hopper to vibrate and driving a sample in the receiving hopper to vibrate and output from the receiving hopper mouth;
and the inclined feeding mechanism is arranged below the vibrator and is used for inclining the receiving hopper and dumping the sample.
Further, the vibration feeding device further comprises a bracket for fixing the inclined feeding mechanism.
Further, the oblique feeding mechanism includes:
A swing cylinder bracket with the lower end hinged to the bracket;
The swing cylinder is fixed on the swing cylinder bracket and used for adjusting the direction of the receiving hopper mouth of the receiving hopper;
The tilting cylinder is used for pushing the swing cylinder bracket to rotate and driving the receiving hopper to tilt and feed, the tilting cylinder is fixed on the bracket, and a piston rod of the tilting cylinder is movably connected with one side opposite to the hinged position of the swing cylinder bracket.
Further, the swing cylinder bracket includes: the horizontal plate and the vertical plate are approximately in an inverted L shape, and the lower end of the vertical plate is hinged on the bracket;
the pushing piece is arranged on the side face of the swing cylinder and fixedly connected with the free end of the horizontal plate, and the pushing piece is movably connected with a piston rod of the inclined cylinder.
Further, the pushing piece comprises a first fixing piece which is fixed at or connected with the free end of the horizontal plate of the swing cylinder bracket, the first fixing piece is a door-shaped piece, and two side plates of the first fixing piece are provided with U-shaped grooves with transverse openings; the second fixing piece is arranged in the first fixing piece, two ends of the second fixing piece are provided with transverse shafts, and the transverse shafts at the two ends are matched with the U-shaped groove of the first fixing piece and can slide in the U-shaped groove; and a piston rod of the inclined cylinder is movably linked with the second fixing piece.
Further, the bottom end of the receiving hopper is connected with the vibrator through a connecting plate.
Compared with the prior art, the invention has the beneficial effects that the vibrating machine is adopted to vibrate the butt joint hopper, so that samples in the butt joint hopper can slowly flow out through the butt joint hopper mouth, namely, the feeding flow can be continuously and accurately controlled according to the preset standard weight, the feeding is realized in a vibrating mode, the purpose of slow feeding is achieved, and the control is convenient.
On one hand, the invention feeds in a vibration feeding mode, the frequency and time of feeding can be accurately controlled by adjusting the vibration frequency and the vibration time, and certain dispersion acting force can be applied to the sample in a vibration mode, so that the invention is convenient for accurate feeding and real-time control.
On the other hand, the invention is fed by a vibration feeding mode, is particularly suitable for feeding granular samples, and is slowly and finely fed by applying vibration.
Meanwhile, the inclined and swinging air cylinders are arranged, so that the material can be smoothly poured during inclined feeding; when the material is not required to be poured, the feeding hopper is straightened under the action of the inclined air cylinder, and the material feeding is stopped; the swing cylinder is also arranged, the feeding direction of the feeding hopper is adjusted through rotation, and the automatic control is suitable for being completed on a production line.
Drawings
FIG. 1 is a schematic perspective view of a vibratory feeding device according to the present invention;
Fig. 2 is a schematic view showing a partial structure of the vibratory feeding device shown in fig. 1 according to the present invention.
Wherein: first connecting plate 1361 of bracket 131 of vibration machine 135 of receiving hopper 136
Hopper nozzle 1362 swing cylinder bracket 133 swing cylinder 134 tilt cylinder 132
Hinge shaft 1333 of horizontal plate 1331 and vertical plate 1332 of tilt cylinder bracket 132
First fixing member 137 and second fixing member 138 first side wing plate 1371U groove 1372
Second side wing 1381 shaft 1382
Detailed Description
The above and further technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, which is a schematic perspective view of a vibratory feeding device according to the present invention, the vibratory feeding device includes: the device comprises a receiving hopper 136, a vibrator 135 and a bracket 131 for fixedly mounting the inclined feeding mechanism, wherein the inclined feeding mechanism is arranged below the vibrator 135. The receiving hopper 136 is arranged at the upper end, a receiving hopper nozzle 1362 is arranged at the side part of the receiving hopper 136, and samples are fed into a sample tray (not shown) through the receiving hopper nozzle 1362; the vibrator 135 is arranged below the receiving hopper 136, or can be arranged on the side surface of the vibrator and connected with the receiving hopper 136, the vibrator 135 vibrates and drives the sample inside the receiving hopper to vibrate, and then the sample is output from the receiving hopper nozzle 1362; the inclined feeding mechanism is arranged below the vibrator 135 and is mounted on the bracket 131 to incline the receiving hopper 136 and pour the sample in the receiving hopper 136.
With continued reference to fig. 1, the oblique feeding mechanism includes a swing cylinder bracket 133, a swing cylinder 134, and an oblique cylinder 132; one end of the lower end of the swing cylinder bracket 133 is hinged to the bracket 131 to be rotatable around the hinge position; the swing cylinder 134 is fixed on the swing cylinder bracket 133, and the direction of the receiving hopper nozzle 1362 is adjusted by swinging so as to be positioned at a feeding position and a dumping position facing the tray; the tilt cylinder 133 is provided on the bracket 131 through a tilt cylinder bracket 1321 at a side opposite to one end hinged to the swing cylinder bracket 133 and the bracket 131, and a piston rod of the tilt cylinder 132 is movably connected to a side opposite to a lower end hinged position of the swing cylinder bracket 133. Because one end of the lower end of the swing cylinder support 133 is hinged to the support 131, when the tilt cylinder 132 pushes the swing cylinder support 133 from the opposite side of the hinged end of the swing cylinder support 133, the swing cylinder support 133 rotates around the hinge center position, thereby tilting the swing cylinder support 133 and the receiving hopper 136 and driving the receiving hopper 136 to tilt to pour the remaining sample.
Specifically, the swing cylinder bracket 133 includes: an inverted L-shaped bracket and a pushing member; the inverted L bracket is disposed below the swing cylinder 134, and includes a horizontal plate 1331 and a vertical plate 1332 integrally connected to the horizontal plate 1331, the vertical plate 1332 being connected to one end of the horizontal plate and being disposed below the horizontal plate 1331, the horizontal plate 1331 and the vertical plate 1332 constituting a bracket having a substantially inverted L shape. Further, a swing cylinder 134 is provided on the horizontal plate 1331, a vertical plate 1332 is used as a support plate, and the free end of the vertical plate 1332 is hinged to the bracket 131 through a hinge shaft 1333; it should be noted that the horizontal and vertical directions refer to directions in which the hopper 136 is in a vibration feeding state, and are not in an oblique feeding state. The pushing member is disposed at a side of the swing cylinder 134 and is fixedly connected with a free end of the horizontal plate 1331, i.e., is connected to an opposite side of the hinged end of the swing cylinder bracket 133, and a lower surface of the pushing member is movably connected with a piston rod of the tilting cylinder 132. The swing cylinder 134 and the swing cylinder bracket 133 can rotate around the hinge shaft 1333 to incline, and further drive the receiving hopper 136 to incline for dumping.
Referring to fig. 2, which is a schematic partial structure of the vibration sample feeding part of the present invention, specifically, the pushing member includes two fixing members sleeved with each other, namely a first fixing member 137 and a second fixing member 138 disposed in the first fixing member 137; the first fixing member 137 is a door-shaped member, the rear side plate of the first fixing member 137 is located on the side surface of the swing cylinder 134 and is connected with the free end of the horizontal plate of the swing cylinder bracket 133, the rear side plate of the first fixing member 137 may be a structure integrally connected with a horizontal plate 1331, that is, a plate is bent, and the first side wing plates 1371 on two sides of the first fixing member 137 are provided with a U-shaped groove 1372 with a transverse opening. The second side wing plates 1381 at two ends of the second fixing member 138 are inserted between the first side wing plates 1371 at two ends of the first fixing member 137, and two ends of the second fixing member 138 are provided with rotating shafts 1382. The second fixing member 138 is embedded in the first fixing member 137, and the rotating shaft 1382 is disposed in the U-shaped groove on the first side wing plate 1371 and can slide along the U-shaped groove; the piston rod of the tilt cylinder 132 is movably coupled to the second fixing member 138. Through nested frame construction, the pushing element has a stable structure and can bear oblique impact. When the tilting cylinder 133 pushes the second fixing member 138 of the pushing member, the pushing member is driven to move upward and rotate about the hinge shaft 1333 of the swing cylinder bracket 133. The sliding between the rotation shaft 1382 of the second fixing member 138 and the U-shaped groove 1372 of the first fixing member 137 serves to eliminate an error generated between an arc in which the pushing member is rotated about the hinge shaft of the swing cylinder bracket 133 at the piston rod connection position of the tilting cylinder 132 and the upward rectilinear motion of the tilting cylinder 132.
Those skilled in the art will appreciate that the form of the oscillating cylinder mount 133 may also be provided in a variety of ways, such as: another vertical plate is provided below the free end of the horizontal plate 1331 for auxiliary support, which auxiliary support plate does not need to be fixed to the bracket 131, but only the vertical plate on the opposite side of the swing cylinder bracket 133 to the tilt cylinder needs to be connected in a hinged manner to the bracket 131.
Preferably, the receiving hopper 136 includes a receiving hopper barrel for obtaining a sample, and a first connecting plate 1361 is disposed between the bottom end of the receiving hopper barrel and the vibrator 135, and it is understood that there are various connection modes between the two, and the connection can be achieved through the connecting plate or the connecting block.
1-2, The vibration feeding device of the present embodiment is operated by the vibration feeder 135 starting to vibrate after the sample is sent into the receiving hopper 136, the sample falls into a tray or other loading equipment through the receiving hopper nozzle 1362 of the receiving hopper 136, and the feeding is completed; the oscillating cylinder 134 rotates the receiving mouth 1362 of the receiving hopper 136 to the pouring position, the inclined cylinder 132 pushes the pushing piece to drive the oscillating cylinder support 133 and the receiving hopper 136 to incline, the rest sample is poured, meanwhile, the vibrating machine 135 vibrates to shake off the sample in the receiving hopper 136 completely, then the inclined cylinder 132 returns to place the receiving hopper 136 flat, and the oscillating cylinder 134 swings to enable the receiving hopper 136 to return to the feeding position.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.

Claims (2)

1. A vibratory feeding device, comprising:
a receiving hopper which is arranged at the upper end, is used for loading samples and is provided with a receiving hopper nozzle for discharging materials;
The vibrator is connected with the receiving hopper and used for driving the receiving hopper to vibrate and driving a sample in the receiving hopper to vibrate and output from the receiving hopper mouth, and the vibrator is arranged below the receiving hopper;
the inclined feeding mechanism is arranged below the vibrator and used for inclining the receiving hopper and dumping samples;
The vibration feeding device further comprises a bracket for fixing the inclined feeding mechanism;
The inclined feeding mechanism comprises:
One end of the lower end is hinged with a swing cylinder bracket on the bracket;
the swing cylinder is fixed on the swing cylinder bracket and used for adjusting the direction of the receiving hopper mouth;
The tilting cylinder is used for pushing the swing cylinder bracket to rotate around the hinging center position of the swing cylinder bracket and driving the receiving hopper to tilt and feed, the tilting cylinder is fixed on the bracket and is positioned at one side opposite to the hinging position of the swing cylinder bracket, and a piston rod of the tilting cylinder is movably connected with one side opposite to the hinging position of the swing cylinder bracket; the swing cylinder bracket includes: the horizontal plate and the vertical plate are approximately in an inverted L shape, and the lower end of the vertical plate is hinged on the bracket;
the pushing piece is arranged on the side surface of the swing cylinder and fixedly connected with the free end of the horizontal plate, and is movably connected with a piston rod of the inclined cylinder;
The pushing piece comprises a first fixing piece which is fixed at or connected with the free end of the horizontal plate of the swing cylinder bracket into a whole, the first fixing piece is a door-shaped piece, and two side plates of the first fixing piece are provided with U-shaped grooves with transverse openings; the second fixing piece is arranged in the first fixing piece, two ends of the second fixing piece are provided with transverse shafts, and the transverse shafts at the two ends are matched with the U-shaped groove of the first fixing piece and can slide in the U-shaped groove; a piston rod of the inclined cylinder is movably connected with the second fixing piece;
The working process is as follows: after the sample is sent into the receiving hopper, the vibrating feeder starts vibrating, the sample falls into a tray or other loading equipment through the receiving hopper mouth of the receiving hopper, and after the feeding is completed; the oscillating cylinder rotates the receiving hopper mouth of the receiving hopper to a dumping position, the inclined cylinder pushes the pushing piece to drive the oscillating cylinder support and the receiving hopper to incline, residual sample is dumped, meanwhile, the vibrating machine vibrates to shake off the sample in the receiving hopper completely, then the inclined cylinder returns to the position, the receiving hopper is leveled, and the oscillating cylinder swings to enable the receiving hopper to return to the feeding position.
2. The vibratory feeding device of claim 1, wherein the bottom end of the receiving hopper is connected to the vibratory machine by a connecting plate.
CN201710389170.7A 2017-05-27 2017-05-27 Vibration feeding device Active CN108928604B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710389170.7A CN108928604B (en) 2017-05-27 2017-05-27 Vibration feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710389170.7A CN108928604B (en) 2017-05-27 2017-05-27 Vibration feeding device

Publications (2)

Publication Number Publication Date
CN108928604A CN108928604A (en) 2018-12-04
CN108928604B true CN108928604B (en) 2024-05-28

Family

ID=64451353

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710389170.7A Active CN108928604B (en) 2017-05-27 2017-05-27 Vibration feeding device

Country Status (1)

Country Link
CN (1) CN108928604B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114313826A (en) * 2022-01-25 2022-04-12 嘉兴科跃振动盘有限公司 Vibration dish of adjustable discharge gate position

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508639A (en) * 1968-02-16 1970-04-28 Illinois Tool Works Article orienting feeder bowl
CN2285760Y (en) * 1996-12-24 1998-07-08 河南省京华实业公司振动设备厂 Rotary vibration feeder
CN2590984Y (en) * 2002-12-31 2003-12-10 中冶集团北京钢铁设计研究总院 Belt conveyer
CN203865427U (en) * 2014-06-10 2014-10-08 青海湘和有色金属有限责任公司 Vibrator feeder
CN204777249U (en) * 2015-04-29 2015-11-18 常州市佳明铝型材有限公司 Adjustable vibrating feeder
CN205240556U (en) * 2015-12-09 2016-05-18 江苏融汇石英材料科技有限公司 Vibrating feeder of adjustable gradient
CN205703283U (en) * 2016-06-08 2016-11-23 山东希斯新能源发展有限公司 A kind of inclined adjustable rotary table
CN206141578U (en) * 2016-10-28 2017-05-03 邵海东 Construction is with conveyer of being convenient for to unload
CN206782680U (en) * 2017-05-27 2017-12-22 江西光明智能科技有限公司 A kind of vibrating material feeding device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508639A (en) * 1968-02-16 1970-04-28 Illinois Tool Works Article orienting feeder bowl
CN2285760Y (en) * 1996-12-24 1998-07-08 河南省京华实业公司振动设备厂 Rotary vibration feeder
CN2590984Y (en) * 2002-12-31 2003-12-10 中冶集团北京钢铁设计研究总院 Belt conveyer
CN203865427U (en) * 2014-06-10 2014-10-08 青海湘和有色金属有限责任公司 Vibrator feeder
CN204777249U (en) * 2015-04-29 2015-11-18 常州市佳明铝型材有限公司 Adjustable vibrating feeder
CN205240556U (en) * 2015-12-09 2016-05-18 江苏融汇石英材料科技有限公司 Vibrating feeder of adjustable gradient
CN205703283U (en) * 2016-06-08 2016-11-23 山东希斯新能源发展有限公司 A kind of inclined adjustable rotary table
CN206141578U (en) * 2016-10-28 2017-05-03 邵海东 Construction is with conveyer of being convenient for to unload
CN206782680U (en) * 2017-05-27 2017-12-22 江西光明智能科技有限公司 A kind of vibrating material feeding device

Also Published As

Publication number Publication date
CN108928604A (en) 2018-12-04

Similar Documents

Publication Publication Date Title
CN108931389B (en) Quantitative sampling device
CN1191963C (en) Powder filling apparatus and method
CN207280772U (en) A kind of quantitative sampling device
CN207095883U (en) A kind of sampler
CN2702919Y (en) Automatic metering machine
CN108928604B (en) Vibration feeding device
CN108931402B (en) Sampling device
CN209777734U (en) Vibrating feeder capable of adjusting blanking amount
CN109946203A (en) A kind of automatic checkout system of aggregate size particle shape
CN108931390B (en) Sampling device
CN111103218A (en) Concrete aggregate particle diameter on-line monitoring device
CN206891792U (en) Sampler
CN214242797U (en) Mix quick-witted powdery material feed mechanism
CN206756551U (en) A kind of spreading out device
CN206782680U (en) A kind of vibrating material feeding device
CN218907691U (en) Quantitative particulate matter packaging equipment
CN217348315U (en) Quantitative material output device of filling machine
CN214132752U (en) A batching station for concrete mixing
JP2021039034A (en) Automated register for granule
CN211877692U (en) Concrete aggregate particle diameter on-line monitoring device
CN218912280U (en) Quantitative feeding mechanism for building construction
US11077971B2 (en) Developer filling method and developer filling apparatus
CN209034804U (en) A kind of compound organic and inorganic fertilizer screening system
CN209143125U (en) Uploading in rice steamer dustpan
CN102765556B (en) Dosage-dispensing device and method for dispensing of measured quantity of free-flowing substances

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant