CN111389302A - Carbon enzyme mixing device for production of amino acid compound fertilizer - Google Patents

Carbon enzyme mixing device for production of amino acid compound fertilizer Download PDF

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Publication number
CN111389302A
CN111389302A CN202010155903.2A CN202010155903A CN111389302A CN 111389302 A CN111389302 A CN 111389302A CN 202010155903 A CN202010155903 A CN 202010155903A CN 111389302 A CN111389302 A CN 111389302A
Authority
CN
China
Prior art keywords
feeding
carbohydrase
compound fertilizer
acid compound
feeding pipe
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.)
Pending
Application number
CN202010155903.2A
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Chinese (zh)
Inventor
彭勇
彭瑞芳
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.)
Wobot Biotechnology Co ltd
Original Assignee
Wobot Biotechnology 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 Wobot Biotechnology Co ltd filed Critical Wobot Biotechnology Co ltd
Priority to CN202010155903.2A priority Critical patent/CN111389302A/en
Publication of CN111389302A publication Critical patent/CN111389302A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/40Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
    • B01F35/43Supporting receptacles on frames or stands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71Feed mechanisms
    • B01F35/717Feed mechanisms characterised by the means for feeding the components to the mixer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75Discharge mechanisms
    • B01F35/754Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/7547Discharge mechanisms characterised by the means for discharging the components from the mixer using valves, gates, orifices or openings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/32Mixing fertiliser ingredients

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fertilizers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

The invention discloses a carbohydrase mixing device for producing amino acid compound fertilizer, which comprises: a charging barrel; the feeding device comprises a first feeding box and a second feeding box, a first feeding pipe is arranged at the lower end of the first feeding box, one end of the first feeding pipe is communicated with the first feeding box, the other end of the first feeding pipe is communicated with the upper end of the charging barrel, a second feeding pipe is arranged at the lower end of the second feeding box, one end of the second feeding pipe is communicated with the second feeding box, and the other end of the second feeding pipe is communicated with the middle part of the first feeding pipe; the discharging pipe is arranged at the right lower corner of the charging barrel and communicated with the charging barrel. The invention aims to provide a carbohydrase mixing device for producing a ammonia-acid compound fertilizer, which can uniformly mix carbohydrase, improve mixing efficiency and improve the adaptability of the compound fertilizer in an alkaline soil environment.

Description

Carbon enzyme mixing device for production of amino acid compound fertilizer
Technical Field
The invention relates to the technical field of fertilizer production equipment, in particular to a carbohydrase mixing device for producing an amino acid compound fertilizer.
Background
The carbohydrase is a safe, efficient and ecological broad-spectrum synergist, can improve the stability and effectiveness of the fertilizer, prevent nutrient from permeating and losing to soil below a plant root zone, has the functions of a nutrient adjuvant and a soil dispersant, can improve the adaptability of the fertilizer in various soil environments, and can improve the effectiveness of the original fertilizer nutrients by more than 35%.
At present, carbohydrase is added manually, so that carbohydrase is easily mixed unevenly, the mixing efficiency is low, the compound fertilizer is easily decomposed in an alkaline environment, nutrients are quickly lost, and the compound fertilizer is not easily absorbed by plants.
Disclosure of Invention
The invention provides a carbohydrase mixing device for producing a ammonia-acid compound fertilizer, which is used for solving the problems of uneven carbohydrase mixing and low efficiency.
In order to achieve the purpose, the invention provides the following technical scheme that the carbohydrase mixing device for producing the ammonia-acid compound fertilizer comprises:
a charging barrel;
the feeding device comprises a first feeding box and a second feeding box, a first feeding pipe is arranged at the lower end of the first feeding box, one end of the first feeding pipe is communicated with the first feeding box, the other end of the first feeding pipe is communicated with the upper end of the charging barrel, a second feeding pipe is arranged at the lower end of the second feeding box, one end of the second feeding pipe is communicated with the second feeding box, and the other end of the second feeding pipe is communicated with the middle part of the first feeding pipe;
the discharging pipe is arranged at the right lower corner of the charging barrel and communicated with the charging barrel.
Preferably, still include the supporting seat, the supporting seat upper end sets up two bracing pieces, bracing piece one end and supporting seat fixed connection, the bracing piece other end with feed cylinder bottom fixed connection.
Preferably, the support rod is a pneumatic telescopic rod.
Preferably, the supporting seat bottom is provided with four footing, the footing includes:
a base;
the bearing is arranged in the base, and the outer ring of the bearing is fixedly connected with the base;
the rotary drum is fixedly connected with the upper end of the bearing inner ring, the inner wall of the rotary drum is provided with internal threads, and the outer side wall of the rotary drum is provided with a horizontal deflector rod;
the lifting shaft is arranged in the rotary drum, an external thread is arranged outside the lifting shaft, and the lifting shaft is in threaded fit with the rotary drum;
the connecting seat is arranged at the upper end of the lifting shaft, one end of the connecting seat is fixedly connected with the lifting shaft, and the other end of the connecting seat is fixedly connected with the supporting seat.
Preferably, set up the pivot in the feed cylinder, both ends pass respectively about the pivot lateral wall center about the feed cylinder and with the feed cylinder lateral wall rotates to be connected, the pivot evenly is provided with a plurality of stirring vane along axial interval.
Preferably, the left side wall of the charging barrel is provided with a motor, and an output shaft of the motor is fixedly connected with the left end of the rotating shaft.
Preferably, a silencing cover is arranged on the outer side of the motor and is in bolted connection with the left side wall of the charging barrel.
Preferably, the bottoms of the first feeding box and the second feeding box are funnel-shaped.
Preferably, the second feeding pipe is provided with a feeding control valve.
Preferably, the discharge pipe is provided with a discharge control valve.
The technical scheme of the invention has the following advantages: the invention discloses a carbohydrase mixing device for producing amino acid compound fertilizer, which comprises: a charging barrel; the feeding device comprises a first feeding box and a second feeding box, a first feeding pipe is arranged at the lower end of the first feeding box, one end of the first feeding pipe is communicated with the first feeding box, the other end of the first feeding pipe is communicated with the upper end of the charging barrel, a second feeding pipe is arranged at the lower end of the second feeding box, one end of the second feeding pipe is communicated with the second feeding box, and the other end of the second feeding pipe is communicated with the middle part of the first feeding pipe; the discharging pipe is arranged at the right lower corner of the charging barrel and communicated with the charging barrel. The invention aims to provide a carbohydrase mixing device for producing a ammonia-acid compound fertilizer, which can uniformly mix carbohydrase, improve mixing efficiency and improve the adaptability of the compound fertilizer in an alkaline soil environment.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the apparatus particularly pointed out in the written description and drawings thereof.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a carbohydrase mixing device for producing an amino acid compound fertilizer according to the present invention;
FIG. 2 is a bottom foot structure diagram of a carbohydrase mixing device for producing an amino acid compound fertilizer provided by the invention;
FIG. 3 is a left side view of a stirring blade of a carbohydrase mixing device for producing an amino acid compound fertilizer provided by the invention.
The following were used: 1-material cylinder, 2-first feeding box, 3-first feeding pipe, 4-second feeding box, 5-second feeding pipe, 6-discharging pipe, 7-supporting seat, 8-supporting rod, 9-bottom foot, 10-base, 11-bearing, 12-rotating cylinder, 13-horizontal deflector rod, 14-lifting shaft, 15-connecting seat, 16-rotating shaft, 17-stirring blade, 18-motor, 19-silencing cover, 20-feeding control valve and 21-discharging control valve.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment of the invention provides a carbohydrase mixing device for producing an amino acid compound fertilizer, which comprises the following components in percentage by weight as shown in figure 1:
a charging barrel 1;
the feeding device comprises a first feeding box 2 and a second feeding box 4, a first feeding pipe 3 is arranged at the lower end of the first feeding box 2, one end of the first feeding pipe 3 is communicated with the first feeding box 2, the other end of the first feeding pipe 3 is communicated with the upper end of the charging barrel 1, a second feeding pipe 5 is arranged at the lower end of the second feeding box 4, one end of the second feeding pipe 5 is communicated with the second feeding box 4, and the other end of the second feeding pipe 5 is communicated with the middle part of the first feeding pipe 3;
the discharge pipe 6, the discharge pipe 6 sets up the lower right corner of feed cylinder 1, discharge pipe 6 with feed cylinder 1 intercommunication.
The working principle and the beneficial effects of the technical scheme are as follows: the amino acid compound fertilizer is poured into the first feeding box 2, the carbohydrase is added into the second feeding box 4, the amino acid compound fertilizer can enter the charging barrel 1 from the first feeding pipe 3, the carbohydrase enters the first feeding pipe 3 from the second feeding pipe 5 and is mixed with the amino acid compound fertilizer and then flows into the charging barrel 1 together, the mixed compound fertilizer is collected from the discharging pipe 6, the amino acid compound fertilizer and the carbohydrase can be fully mixed by adding a mixing device, the carbohydrase can be added into the amino acid compound fertilizer, the advantages of the carbohydrase can be utilized, the stability and the effectiveness of the compound fertilizer are improved, the fixation of effective components of the fertilizer in an alkaline environment is improved through the adaptability of the fertilizer in various soil environments, salts can be shielded in high-salinity and high-sodium soil, the nutrient absorption capacity of plants damaged by salts or chemical harmful substances can be recovered, and the device can replace a mode of manually adding the carbohydrase to ensure that the, the mixing efficiency is improved.
In one embodiment, the material barrel further comprises a supporting seat 7, two supporting rods 8 are arranged at the upper end of the supporting seat 7, one end of each supporting rod 8 is fixedly connected with the supporting seat 7, and the other end of each supporting rod 8 is fixedly connected with the bottom of the material barrel 1.
The working principle and the beneficial effects of the technical scheme are as follows: the bottom of the charging barrel 1 is provided with a supporting seat 7, and supporting rods 8 are arranged at two ends of the supporting seat 7, so that the charging barrel 1 can be supported.
In one embodiment, the support bar 8 is a pneumatic telescoping bar.
The working principle and the beneficial effects of the technical scheme are as follows: bracing piece 8 sets up to pneumatic telescopic rod, can stretch out and draw back, adjusts the height of feed cylinder 1, and amino acid compound fertilizer finishes with the carbohydrase mixture after, with the extension of 1 left side bracing piece of feed cylinder 8 for the slope of feed cylinder 1 helps the compound fertilizer after mixing to discharge.
In one embodiment, as shown in fig. 1 and 2, the bottom of the supporting seat 7 is provided with four feet 9, and the feet 9 include:
a base 10;
the bearing 11 is installed in the base 10, and the outer ring of the bearing 11 is fixedly connected with the base 10;
the rotating drum 12 is fixedly connected with the upper end of the inner ring of the bearing 11, the inner wall of the rotating drum 12 is provided with internal threads, and the outer side wall of the rotating drum 12 is provided with a horizontal deflector rod 13;
the lifting shaft 14 is arranged in the rotary drum 12, the lifting shaft 14 is externally threaded, and the lifting shaft 14 is in threaded fit with the rotary drum 12;
the connecting base 15, the connecting base 15 sets up in the lift axle 14 upper end, connecting base 15 one end with lift axle 14 fixed connection, the connecting base 15 other end with supporting seat 7 fixed connection.
The working principle and the beneficial effects of the technical scheme are as follows: rotary drum 12 and 11 inner circles fixed connection of bearing, 11 outer rings of bearing and base 10 fixed connection, through rotating horizontal driving lever 13, rotary drum 12 can freely rotate, because lift axle 14 and rotary drum 12 threaded connection, when rotary drum 12 rotates, lift axle 14 can rise or descend according to 12 direction of rotation of rotary drum, connecting seat 15 follows lift axle 14 and rises or descend, thereby adjust footing 9 height, supporting seat 7 can be guaranteed to keep at horizontal position all the time in the cooperation adjustment of four footing 9, be fit for the uneven ground of height, therefore, the clothes hanger is strong in practicability, and at the in-process of adjusting footing 9 height, need not lift whole device, and convenient adjustment.
In one embodiment, as shown in fig. 1 and 3, a rotating shaft 16 is disposed in the barrel 1, the left end and the right end of the rotating shaft 16 respectively penetrate through the centers of the left side wall and the right side wall of the barrel 1 and are rotatably connected with the side walls of the barrel 1, and a plurality of stirring blades 17 are uniformly disposed on the rotating shaft 16 along the axial direction at intervals.
The working principle and the beneficial effects of the technical scheme are as follows: set up pivot 16 in the feed cylinder 1, be provided with a plurality of stirring vane 17 on the pivot 16, pivot 16 rotates and to drive stirring vane 17 and rotate, stirs amino-acid compound fertilizer and carbohydrase in the feed cylinder 1, makes the two mix fully.
In one embodiment, the left side wall of the barrel 1 is provided with a motor 18, and an output shaft of the motor 18 is fixedly connected with the left end of the rotating shaft 16.
The working principle and the beneficial effects of the technical scheme are as follows: the motor 18 rotates to drive the rotating shaft 16 to rotate, so that the stirring blades 17 stir the fertilizer in the charging barrel 1, and the stirring efficiency can be improved by using the motor 18.
In one embodiment, a silencing cover 19 is arranged outside the motor 18, and the silencing cover 19 is bolted to the left side wall of the charging barrel 1.
The working principle and the beneficial effects of the technical scheme are as follows: the silencing cover 19 is arranged on the outer side of the motor 18, so that the motor 18 can be effectively silenced in the working process, the noise generated by the running of the motor 18 is reduced, and the surrounding working environment is protected.
In one embodiment, the first feed box 2 is funnel-shaped from the bottom of the second feed box 4.
The working principle and the beneficial effects of the technical scheme are as follows: the bottoms of the first feeding box 2 and the second feeding box 4 are arranged into funnel shapes, so that the materials in the box body can flow out conveniently.
In one embodiment, the second feeding pipe 5 is provided with a feeding control valve 20.
The working principle and the beneficial effects of the technical scheme are as follows: the feeding control valve 20 is arranged at the second feeding pipe 5, so that the mixing amount of carbohydrase can be controlled according to the amount of the ammonia-acid compound fertilizer, the mixing proportion of the ammonia-acid compound fertilizer and the carbohydrase is ensured, and the surplus of the carbohydrase cannot be caused.
In one embodiment, the tapping pipe 6 is provided with a tapping control valve 21.
The working principle and the beneficial effects of the technical scheme are as follows: discharging pipe 6 department sets up ejection of compact control valve 21, and after the amino acid compound fertilizer in feed cylinder 1 and carbohydrase mixed, can open ejection of compact control valve 21 and discharge the fertilizer after mixing, ejection of compact control valve 21 can control the fertilizer exhaust rate.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The utility model provides a carbohydrase mixing arrangement for production of amino acid compound fertilizer which characterized in that includes:
a barrel (1);
the feeding device comprises a first feeding box (2) and a second feeding box (4), a first feeding pipe (3) is arranged at the lower end of the first feeding box (2), one end of the first feeding pipe (3) is communicated with the first feeding box (2), the other end of the first feeding pipe (3) is communicated with the upper end of the charging barrel (1), a second feeding pipe (5) is arranged at the lower end of the second feeding box (4), one end of the second feeding pipe (5) is communicated with the second feeding box (4), and the other end of the second feeding pipe (5) is communicated with the middle part of the first feeding pipe (3);
discharging pipe (6), discharging pipe (6) set up feed cylinder (1) lower right corner, discharging pipe (6) with feed cylinder (1) intercommunication.
2. The carbohydrase mixing device for producing the ammonia-acid compound fertilizer as claimed in claim 1, further comprising a supporting seat (7), wherein two supporting rods (8) are arranged at the upper end of the supporting seat (7), one end of each supporting rod (8) is fixedly connected with the supporting seat (7), and the other end of each supporting rod (8) is fixedly connected with the bottom of the charging barrel (1).
3. The carbohydrase mixing apparatus for producing an amino acid compound fertilizer as claimed in claim 2, wherein the support rod (8) is a pneumatic telescopic rod.
4. The carbohydrase mixing apparatus for production of ammonia-acid compound fertilizer as claimed in claim 2, wherein the bottom of the supporting seat (7) is provided with four feet (9), and the feet (9) comprise:
a base (10);
the bearing (11), the said bearing (11) is installed in the said base (10), the said bearing (11) outer race and said base (10) are fixedly connected;
the rotary drum (12) is fixedly connected with the upper end of the inner ring of the bearing (11), the inner wall of the rotary drum (12) is provided with internal threads, and the outer side wall of the rotary drum (12) is provided with a horizontal deflector rod (13);
the lifting shaft (14) is arranged in the rotary drum (12), external threads are arranged on the outer portion of the lifting shaft (14), and the lifting shaft (14) is in threaded fit with the rotary drum (12);
the lifting device comprises a connecting seat (15), wherein the connecting seat (15) is arranged at the upper end of the lifting shaft (14), one end of the connecting seat (15) is fixedly connected with the lifting shaft (14), and the other end of the connecting seat (15) is fixedly connected with the supporting seat (7).
5. The carbohydrase mixing device for producing the ammonia-acid compound fertilizer as claimed in claim 1, wherein a rotating shaft (16) is arranged in the charging barrel (1), the left end and the right end of the rotating shaft (16) respectively penetrate through the centers of the left side wall and the right side wall of the charging barrel (1) and are rotatably connected with the side wall of the charging barrel (1), and a plurality of stirring blades (17) are uniformly arranged on the rotating shaft (16) along the axial direction at intervals.
6. The carbohydrase mixing device for producing the ammonia-acid compound fertilizer as claimed in claim 5, wherein a motor (18) is arranged on the left side wall of the charging barrel (1), and an output shaft of the motor (18) is fixedly connected with the left end of the rotating shaft (16).
7. The carbohydrase mixing device for producing the ammonia-acid compound fertilizer as claimed in claim 6, wherein a silencing cover (19) is arranged outside the motor (18), and the silencing cover (19) is connected with a bolt on the left side wall of the charging barrel (1).
8. The carbohydrase mixing apparatus for the production of ammonia-acid compound fertilizer as claimed in claim 1, wherein the bottoms of the first feeding box (2) and the second feeding box (4) are funnel-shaped.
9. Carbohydrase mixing apparatus for ammonia-acid compound fertilizer production according to claim 1, characterized in that the second feeding pipe (5) is provided with a feeding control valve (20).
10. Carbohydrase mixing apparatus for ammonia-acid compound fertilizer production according to claim 1, characterized in that the discharge pipe (6) is provided with a discharge control valve (21).
CN202010155903.2A 2020-03-09 2020-03-09 Carbon enzyme mixing device for production of amino acid compound fertilizer Pending CN111389302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010155903.2A CN111389302A (en) 2020-03-09 2020-03-09 Carbon enzyme mixing device for production of amino acid compound fertilizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010155903.2A CN111389302A (en) 2020-03-09 2020-03-09 Carbon enzyme mixing device for production of amino acid compound fertilizer

Publications (1)

Publication Number Publication Date
CN111389302A true CN111389302A (en) 2020-07-10

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ID=71415128

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010155903.2A Pending CN111389302A (en) 2020-03-09 2020-03-09 Carbon enzyme mixing device for production of amino acid compound fertilizer

Country Status (1)

Country Link
CN (1) CN111389302A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204638058U (en) * 2015-05-25 2015-09-16 宁波双人新材料有限公司 A kind of thermohardening lacquer powder mixing device
CN205683891U (en) * 2016-06-22 2016-11-16 长春德联化工有限公司 A kind of automobile filled and process agitating device
CN205914118U (en) * 2016-05-04 2017-02-01 浙江铭友环境工程有限公司 Can realize efficient mixer of feeding in proportion
CN108371898A (en) * 2018-05-03 2018-08-07 石台县莘田粮油有限公司 A kind of Rice enriched-Se processing Double shaft stirring device
DE202018104763U1 (en) * 2018-08-20 2018-09-06 Heina Meyer Mixing device for preparing a usable mass

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204638058U (en) * 2015-05-25 2015-09-16 宁波双人新材料有限公司 A kind of thermohardening lacquer powder mixing device
CN205914118U (en) * 2016-05-04 2017-02-01 浙江铭友环境工程有限公司 Can realize efficient mixer of feeding in proportion
CN205683891U (en) * 2016-06-22 2016-11-16 长春德联化工有限公司 A kind of automobile filled and process agitating device
CN108371898A (en) * 2018-05-03 2018-08-07 石台县莘田粮油有限公司 A kind of Rice enriched-Se processing Double shaft stirring device
DE202018104763U1 (en) * 2018-08-20 2018-09-06 Heina Meyer Mixing device for preparing a usable mass

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Application publication date: 20200710