CN101933486A - Negative-pressure feed charging machine - Google Patents

Negative-pressure feed charging machine Download PDF

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Publication number
CN101933486A
CN101933486A CN 201010277093 CN201010277093A CN101933486A CN 101933486 A CN101933486 A CN 101933486A CN 201010277093 CN201010277093 CN 201010277093 CN 201010277093 A CN201010277093 A CN 201010277093A CN 101933486 A CN101933486 A CN 101933486A
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CN
China
Prior art keywords
stuff
spraying pipe
feed
machine
tapping channel
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Granted
Application number
CN 201010277093
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Chinese (zh)
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CN101933486B (en
Inventor
官永坤
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QUANZHOU ZHOU CHONRA MECH TECHNOLOGY Co Ltd
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QUANZHOU ZHOU CHONRA MECH TECHNOLOGY Co Ltd
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Priority to CN2010102770934A priority Critical patent/CN101933486B/en
Publication of CN101933486A publication Critical patent/CN101933486A/en
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Publication of CN101933486B publication Critical patent/CN101933486B/en
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Abstract

The invention discloses a negative-pressure feed charging machine, comprising a feeder with a material chamber and a discharge device with a discharge channel. The discharge device is driven to rotate by a rotating motor; and the feeder is connected with a feed pipe of an external feeding machine. When the rotating motor is started, the discharge device rotates at a high speed to generate negative pressure in the discharge channel so as to absorb the feed in the material chamber and spray the feed outside. In the invention, the charging range of the feed is greatly expanded so that the feed can be sprayed in all directions, and the spraying area far exceeds that of the traditional feed charging machine. The machine is simple in structure, easy to assemble, strong in adaptability to waters, thereby being widely applicable for the feed charging in all kinds of aquatic product plants.

Description

Suction type suction feed is thrown in machine
Technical field
The present invention relates to a kind of feed and throw in machine, particularly a kind of suction type suction feed is thrown in machine.
Background technology
In present large-scale aquiculture place, in the big fish pond of area, the shrimp pool, since with a vast territory, can not go to have spread feed by manpower merely, must use electronic fodder thrower spray to throw feed.And present general fodder thrower is that the feed that is made into box shape is thrown in machine, and feed threading fixedly feed is thrown in after the feedbox of machine, relies on the hoisting equipment that is installed in its underpart that feed is sprayed away.But this equipment can only be placed in the side of a pond, and the scope that causes feed to spray is confined to side of a pond scope, can not cover the waters away from the side of a pond.In addition, some fodder thrower is by the middle feed input that realizes the waters, center to the pool at the discharging opening place of common feedbox connection feed pipe and traction, but this way input angle is single, and fixed-site and input scope are little, and practicality is not high.Therefore, be badly in need of a kind of feed that can spray feed on a large scale in the industry and throw in machine.
Summary of the invention
The present invention is in order to provide a kind of suction type suction feed to throw in machine, and it has the advantages that feed is sprayed at comprehensive no dead angle.
The solution that the present invention solves its technical problem is:
A kind of suction type suction feed is thrown in machine, comprising: feeder, and its inside is provided with material-holding chamber, described material-holding chamber upper opening, the bottom is provided with charging aperture, and described charging aperture is in communication with the outside; Discharger, it is arranged on the top of feeder, and inside is provided with at least one for the tapping channel that feed link is crossed, and described tapping channel one end is communicated with the top of material-holding chamber, and the other end is in communication with the outside; Turning motor, it is arranged on the bottom of feeder, and its output revolving shaft stretches in the discharger after passing feeder, and is fixedly connected with discharger, make that when keeping tapping channel and material-holding chamber is communicated with discharger integral body can be driven by the output revolving shaft of described turning motor and rotate.
Be further used as preferred embodiment, the material-holding chamber lower wall of described feeder is the inclined-plane that tilts to the charging aperture direction, and charging aperture is positioned at the following extreme direction on described inclined-plane.
Be further used as preferred embodiment, described feeder connects with the cursory of peripheral hardware by support bar, makes described suction type suction feed throw in machine integral body and can float on the surface by cursory.
Be further used as preferred embodiment, the bottom of described tapping channel is provided with drain hole, be provided with a dash step between described drain hole and the tapping channel lower ending opening, described discharger is provided with the passage that anhydrates, the described passage lower end of anhydrating is in communication with the outside, the upper end is provided with spherical cavity, be provided with a dash ball in the described spherical cavity, and spherical cavity is communicated with the lower end of tapping channel by drain hole, the diameter of channel diameter less than the dash ball wherein anhydrates, inwall has vertical groove, when the dash ball being placed anhydrate the passage top, spherical cavity still is communicated with the below is extraneous, and the drain hole diameter is less than the diameter of dash ball in addition, make that the dash ball can only be movable in spherical cavity, and the dash ball can be blocked drain hole fully.
Be further used as preferred embodiment, the end that described tapping channel is in communication with the outside is connected with stuff-spraying pipe, and described discharger is in communication with the outside by stuff-spraying pipe, and described stuff-spraying pipe pipe shaft and horizontal plane form from 0 spends to the angle 90 degree.
Be further used as preferred embodiment, the corner dimension that described stuff-spraying pipe and horizontal plane form is 8 degree.
Be further used as preferred embodiment, described stuff-spraying pipe comprises: the stuff-spraying pipe body, its lower end connects with the upper end open of tapping channel, the upper end is provided with towards several louvers of tube core central axis direction bending on the vertical lower position of tube wall turns up, described louver is turned up along stuff-spraying pipe body direction and is distributed, and the opening turned up of louver is oriented the upper end open direction of stuff-spraying pipe body; Body is installed sign indicating number, and it is socketed in the lower end of stuff-spraying pipe body, and the stuff-spraying pipe body is further firmly connected with discharger; The stuff-spraying pipe pipe box, its integral body is divided into that caliber do not wait coaxial three sections, comprise: the socket section, its inner diameter equates with the external diameter of stuff-spraying pipe body, the upper end open that is socketed in described stuff-spraying pipe body fully is peripheral and coaxial with it, the lower tube jacket wall is provided with the louver of stuff-spraying pipe body and turns up several openings that quantity equates, described opening is provided with the torn edge turned up with the described louver projection of hook joint mutually; Open section, its inner diameter are greater than the external diameter of stuff-spraying pipe body, and closing up to the upper tube jacket wall of vertical direction is given prominence to, the containing shape of lower tube jacket wall in the upper end, makes the upper tube jacket wall shelter from the lower tube jacket wall; Changeover portion, it is connected the socket section with open section, and be socketed in the upper end open outer wall of described stuff-spraying pipe body, and and leave the space between this outer wall, its below pipe box wall is provided with several osculums, described osculum is positioned at below, described space, makes the rainwater that flows into from stuff-spraying pipe pipe box upper end open and can not flow into the stuff-spraying pipe body along this osculum outflow.
Be further used as preferred embodiment, described tapping channel has ten, output revolving shaft with turning motor is that axis 360 degree ring-types are uniform, and each tapping channel is all corresponding is furnished with the passage that anhydrates, spherical cavity, dash ball and stuff-spraying pipe, and the output revolving shaft with turning motor is that axis 360 degree ring-types are uniform equally.
Be further used as preferred embodiment, be provided with rolling bearing between the turned position of described feeder and discharger.
The invention has the beneficial effects as follows: the discharger high speed rotating that the present invention utilizes the turning motor drive to be positioned at feeder top makes the discharging tunnel-shaped become negative pressure, thereby the feed that will store up in the material-holding chamber of feeder sucks in the tapping channel, by the centrifugal force that produces that rotatablely moves feed is sprayed away again, because discharger is 360 degree rotations, so the spraying range of feed also is to be central circular face territory with the discharger.The present invention has greatly expanded the input scope of feed, reaches comprehensive no dead angle when spraying feed, sprays the zone and throws in machine considerably beyond traditional feed, and the present invention is simple in structure, assemble simple and easyly, strong to waters adaptability, the feed that is widely used in all kinds of aquacultures place is thrown in.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is an overall structure partial cutaway schematic diagram of the present invention;
Fig. 2 is a structure principle chart of the present invention;
Fig. 3 is the discharger axonometric drawing among the present invention;
Fig. 4 is the feeder axonometric drawing among the present invention;
Fig. 5 is feeder, discharger and the turning motor installation diagram among the present invention;
Fig. 6 is the outside schematic diagram of the stuff-spraying pipe among the present invention;
Fig. 7 is that the stuff-spraying pipe among the present invention partly cuts open schematic diagram;
Fig. 8 be the present invention whole with cursory the cooperation after axle survey schematic diagram.
Embodiment
With reference to Fig. 1~Fig. 5, a kind of suction type suction feed is thrown in machine, comprising: feeder 1, and its inside is provided with material-holding chamber, described material-holding chamber upper opening, the bottom is provided with charging aperture, and described charging aperture is in communication with the outside; Discharger 2, it is arranged on the top of feeder 1, and inside is provided with at least one for the tapping channel 25 that feed link is crossed, and described tapping channel 25 1 ends are communicated with the top of material-holding chamber, and the other end is in communication with the outside; Turning motor 3, it is arranged on the bottom of feeder 1, its output revolving shaft stretches in the discharger 2 after passing feeder 1, and be fixedly connected with discharger 2, make that when keeping tapping channel 25 and material-holding chamber is communicated with discharger 2 integral body can be driven by the output revolving shaft of described turning motor 3 and rotate.Wherein, the charging aperture of feeder 1 is connected with the feed pipe of peripheral hardware, crosses feed pipe from the feed link of feedbox and enters feeder 1 inner chamber.In addition, when laying the feed pipe of peripheral hardware, the feed pipe that preferred length is short allows this suction type suction feed throw in the suction Cheng Jinliang weak point of machine, strengthens suction, charging effect with this.
Be further used as preferred embodiment, the material-holding chamber lower wall of described feeder 1 is the inclined-plane that tilts to the charging aperture direction, and charging aperture is positioned at the following extreme direction on described inclined-plane.Can not flock together after such structure makes feed enter from charging aperture other corners of material-holding chamber, allow discharger 2 easier feed in the material-holding chamber is drawn clean.
With reference to Fig. 8, be further used as preferred embodiment, described feeder 1 connects with the cursory of peripheral hardware by support bar 12, makes described suction type suction feed throw in machine integral body and can float on the surface by cursory.This sample negative-pressure suction material feed is thrown in machine just can be in the work of the optional position in waters.
With reference to Fig. 1~Fig. 3, be further used as preferred embodiment, the bottom of described tapping channel 25 is provided with drain hole 22, be provided with a dash step between described drain hole 22 and tapping channel 25 lower ending openings, described discharger 2 is provided with the passage 23 that anhydrates, described passage 23 lower ends of anhydrating are in communication with the outside, the upper end is provided with spherical cavity 24, described spherical cavity is provided with a dash ball 26 for 24 li, and spherical cavity 24 is communicated with the lower end of tapping channel 25 by drain hole 22, wherein anhydrate passage 23 diameters less than the diameter of dash ball 26, and inwall has vertical groove, when dash ball 26 being placed anhydrate passage 23 tops, spherical cavity 24 still is communicated with the below is extraneous, drain hole 22 diameters make that dash ball 26 can only be movable in spherical cavity 24, and dash ball 26 can be blocked drain hole 22 fully less than the diameter of dash ball 26 in addition.When discharger 2 high speed rotating, dash ball 26 is because inertia and being got rid of to the below of drain hole 22, and tightly blocks drain hole 22, makes tapping channel 25 inner chamber air can not leak and cause the negative pressure insufficient pressure from the passage 23 that anhydrates; When turning motor 3 is shut down; when discharger 2 is static; dash ball 26 falls into the bottom of spherical cavity 24 owing to deadweight; promptly the anhydrate upper end of passage 23; like this ought be Sometimes When It Rains; the rainwater that flows into from tapping channel 25 can flow into from drain hole 22, flows away and can not flow into the discharger 2 from the grooves of the passage 23 that anhydrates through spherical cavity 24 backs.Described in addition dash step also plays the effect that stops rainwater.
Be further used as preferred embodiment, the end that described tapping channel 25 is in communication with the outside is connected with stuff-spraying pipe 21, and described discharger 2 is in communication with the outside by stuff-spraying pipe 21, and described stuff-spraying pipe 21 pipe shafts and horizontal plane form 0 and spend to the angle between 90 degree.
Be further used as preferred embodiment, described stuff-spraying pipe 21 is 8 degree with the corner dimension that horizontal plane forms.This angle makes and reaches a desirable scope from the unrestrained zone of feed that stuff-spraying pipe 21 sprays out.
With reference to Fig. 1, Fig. 6 and Fig. 7, be further used as preferred embodiment, described stuff-spraying pipe 21 comprises: stuff-spraying pipe body 211, its lower end connects with the upper end open of tapping channel 25, the upper end is provided with towards several louvers of tube core central axis direction bending on the vertical lower position of tube wall turns up, described louver is turned up along stuff-spraying pipe body 211 directions and is distributed, and the opening turned up of louver is oriented the upper end open direction of stuff-spraying pipe body 211; Body is installed sign indicating number 213, and it is socketed in the lower end of stuff-spraying pipe body 211, and stuff-spraying pipe body 211 is further firmly connected with discharger 2; Stuff-spraying pipe pipe box 212, its integral body is divided into that caliber do not wait coaxial three sections, comprise: socket section 2121, its inner diameter equates with the external diameter of stuff-spraying pipe body 211, the upper end open that is socketed in described stuff-spraying pipe body 211 fully is peripheral and coaxial with it, the lower tube jacket wall is provided with the louver of stuff-spraying pipe body 211 and turns up several openings that quantity equates, described opening is provided with the torn edge turned up with the described louver projection of hook joint mutually; Open section 2123, its inner diameter are greater than the external diameter of stuff-spraying pipe body 211, and closing up to the upper tube jacket wall of vertical direction is given prominence to, the containing shape of lower tube jacket wall in the upper end, makes the upper tube jacket wall shelter from the lower tube jacket wall; Changeover portion 2122, it is connected socket section 2121 with open section 2123, and be socketed in the upper end open outer wall of described stuff-spraying pipe body 211, and and leave the space between this outer wall, its below pipe box wall is provided with several osculums, described osculum is positioned at below, described space, makes the rainwater that flows into from stuff-spraying pipe pipe box 212 upper end open and can not flow into the stuff-spraying pipe body 211 along this osculum outflow.When rainy, the structure that closes up in stuff-spraying pipe pipe box 212 upper ends makes its upper pipe wall shelter from the rainwater of part, has only a small amount of rainwater to flow in the stuff-spraying pipe 21; And these rainwater can flow away from the opening that louver is turned up after dropping down stuff-spraying pipe body 211; Even the last rainwater that also has minute quantity also can flow away by the groove of the passage 23 that anhydrates in the discharger 2, thereby guarantee that the discharger 2 and the inner chamber of feeder 1 all keep dry.
With reference to Fig. 1, be further used as preferred embodiment, described tapping channel 25 has ten, output revolving shaft with turning motor 3 is that axis 360 degree ring-types are uniform, and each tapping channel 25 is all corresponding is furnished with the passage 23 that anhydrates, spherical cavity 24, dash ball 26 and a stuff-spraying pipe 21, and the output revolving shaft with turning motor 3 is that axis 360 degree ring-types are uniform equally.After a plurality of like this dischargings, material-spraying device ring-type are uniform, make that the spinning movement of discharger 2 is more steady, the feed spraying range is more even, and once sprinkling amount is more.
Be further used as preferred embodiment, be provided with rolling bearing between the turned position of described feeder 1 and discharger 2.
During work, after this suction type suction feed is thrown in machine and cursory assembling, place the waters that needs to throw in feed, the feed pipe of the fodder thrower of peripheral hardware is sent feed the material-holding chamber to from feed pipe 11, turning motor 3 starts, drive discharger 2 high speed rotating, make the tapping channel 25 inner negative pressure that form, this pressure differential up and down can suck the feed in the material-holding chamber in the discharger 2, and because the centrifugal force that high speed rotating produces makes feed spray away from stuff-spraying pipe 21 by each equally distributed tapping channel 25 backs.
More than be that preferable enforcement of the present invention is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.

Claims (10)

1. a suction type suction feed is thrown in machine, it is characterized in that: comprising:
Feeder (1), its inside is provided with material-holding chamber, described material-holding chamber upper opening, the bottom is provided with charging aperture, and described charging aperture is in communication with the outside;
Discharger (2), it is arranged on the top of feeder (1), and inside is provided with at least one for the tapping channel (25) that feed link is crossed, and described tapping channel (25) one ends are communicated with the top of material-holding chamber, and the other end is in communication with the outside;
Turning motor (3), it is arranged on the bottom of feeder (1), its output revolving shaft stretches in the discharger (2) after passing feeder (1), and be fixedly connected with discharger (2), make that when keeping tapping channel (25) and material-holding chamber is communicated with discharger (2) integral body can be driven by the output revolving shaft of described turning motor (3) and rotate.
2. suction type suction feed according to claim 1 is thrown in machine, it is characterized in that: the material-holding chamber lower wall of described feeder (1) is the inclined-plane that tilts to the charging aperture direction, and charging aperture is positioned at the following extreme direction on described inclined-plane.
3. suction type suction feed according to claim 1 is thrown in machine, it is characterized in that: described feeder (1) connects with the cursory of peripheral hardware by support bar (12), makes described suction type suction feed throw in machine integral body and can float on the surface by cursory.
4. suction type suction feed according to claim 1 is thrown in machine, it is characterized in that: the bottom of described tapping channel (25) is provided with drain hole (22), be provided with a dash step between described drain hole (22) and tapping channel (25) lower ending opening, described discharger (2) is provided with the passage that anhydrates (23), the described passage that anhydrates (23) lower end is in communication with the outside, the upper end is provided with spherical cavity (24), described spherical cavity (24) lining is provided with a dash ball (26), and spherical cavity (24) is communicated with the lower end of tapping channel (25) by drain hole (22), the diameter of passage (23) diameter less than dash ball (26) wherein anhydrates, inwall has vertical groove, when making dash ball (26) place the passage that anhydrates (23) top, spherical cavity (24) still is communicated with the below is extraneous, drain hole (22) diameter is less than the diameter of dash ball (26) in addition, make that dash ball (26) can only be movable in spherical cavity (24), and dash ball (26) can be blocked drain hole (22) fully.
5. throw in machine according to claim 1 or 4 described suction type suction feeds, it is characterized in that: the end that described tapping channel (25) is in communication with the outside is connected with stuff-spraying pipe (21), described discharger (2) is in communication with the outside by stuff-spraying pipe (21), and described stuff-spraying pipe (21) pipe shaft and horizontal plane form 0 and spend to the angle between 90 degree.
6. suction type suction feed according to claim 5 is thrown in machine, it is characterized in that: described stuff-spraying pipe (21) is 8 degree with the corner dimension that horizontal plane forms.
7. suction type suction feed according to claim 5 is thrown in machine, and it is characterized in that: described stuff-spraying pipe (21) comprising:
Stuff-spraying pipe body (211), its lower end connects with the upper end open of tapping channel (25), the upper end is provided with towards several louvers of tube core central axis direction bending on the vertical lower position of tube wall turns up, described louver is turned up along stuff-spraying pipe body (211) direction and is distributed, and the opening turned up of louver is oriented the upper end open direction of stuff-spraying pipe body (211);
Body is installed sign indicating number (213), and it is socketed in the lower end of stuff-spraying pipe body (211), and stuff-spraying pipe body (211) is further firmly connected with discharger (2);
Stuff-spraying pipe pipe box (212), its integral body are divided into that caliber do not wait coaxial three sections, comprising:
Socket section (2121), its inner diameter equates with the external diameter of stuff-spraying pipe body (211), the upper end open that is socketed in described stuff-spraying pipe body (211) fully is peripheral and coaxial with it, the lower tube jacket wall is provided with the louver of stuff-spraying pipe body (211) and turns up several openings that quantity equates, described opening is provided with the torn edge turned up with the described louver projection of hook joint mutually;
Open section (2123), its inner diameter are greater than the external diameter of stuff-spraying pipe body (211), and closing up to the upper tube jacket wall of vertical direction is given prominence to, the containing shape of lower tube jacket wall in the upper end, makes the upper tube jacket wall shelter from the lower tube jacket wall;
Changeover portion (2122), it is connected socket section (2121) with open section (2123), and be socketed in the upper end open outer wall of described stuff-spraying pipe body (211), and and leave the space between this outer wall, its below pipe box wall is provided with several osculums, described osculum is positioned at below, described space, makes the rainwater that flows into from stuff-spraying pipe pipe box (212) upper end open and can not flow into the stuff-spraying pipe body (211) along this osculum outflow.
8. throw in machine according to claim 1 or 4 described suction type suction feeds, it is characterized in that: described tapping channel (25) has ten, output revolving shaft with turning motor (3) is that axis 360 degree ring-types are uniform, and each tapping channel (25) is all corresponding is furnished with the passage that anhydrates (23), spherical cavity (24), dash ball (26) and stuff-spraying pipe (21), and the output revolving shaft with turning motor (3) is that axis 360 degree ring-types are uniform equally.
9. suction type suction feed according to claim 5 is thrown in machine, it is characterized in that: described tapping channel (25) has ten, output revolving shaft with turning motor (3) is that axis 360 degree ring-types are uniform, and each tapping channel (25) is all corresponding is furnished with the passage that anhydrates (23), spherical cavity (24), dash ball (26) and stuff-spraying pipe (21), and the output revolving shaft with turning motor (3) is that axis 360 degree ring-types are uniform equally.
10. suction type suction feed according to claim 1 is thrown in machine, it is characterized in that: be provided with rolling bearing between the turned position of described feeder (1) and discharger (2).
CN2010102770934A 2010-09-09 2010-09-09 Negative-pressure feed charging machine Active CN101933486B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102301977A (en) * 2011-07-13 2012-01-04 金湖小青青机电设备有限公司 Pneumatic feeder
CN105360043A (en) * 2015-12-18 2016-03-02 王爱贞 Automatic aquatic feed feeding device
CN110692572A (en) * 2019-11-22 2020-01-17 李成燕 Float automatic dispensing equipment of formula full angle fish fodder
CN111758643A (en) * 2020-05-30 2020-10-13 贵州兴夫科技有限公司 Marine organism bait feeding device
CN111955402A (en) * 2020-09-02 2020-11-20 重庆市中药研究院 Medical leech feeding device
CN112407958A (en) * 2020-10-17 2021-02-26 钟妃凤 Sewage treatment throws material charging equipment for hydraulic engineering

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1269835A1 (en) * 1999-06-25 2003-01-02 Yamaha Hatsudoki Kabushiki Kaisha Automatic feeding apparatus and automatic feeding method
US20050241588A1 (en) * 2004-04-28 2005-11-03 Texas Hunter Products Directional broadcast feeder for fish and game
CN201430844Y (en) * 2009-04-22 2010-03-31 田兴荣 Perigon feeding machine
CN201797853U (en) * 2010-09-09 2011-04-20 广州市中浪机械科技有限公司 Negative pressure type forage absorbing and discharging machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1269835A1 (en) * 1999-06-25 2003-01-02 Yamaha Hatsudoki Kabushiki Kaisha Automatic feeding apparatus and automatic feeding method
US20050241588A1 (en) * 2004-04-28 2005-11-03 Texas Hunter Products Directional broadcast feeder for fish and game
CN201430844Y (en) * 2009-04-22 2010-03-31 田兴荣 Perigon feeding machine
CN201797853U (en) * 2010-09-09 2011-04-20 广州市中浪机械科技有限公司 Negative pressure type forage absorbing and discharging machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102301977A (en) * 2011-07-13 2012-01-04 金湖小青青机电设备有限公司 Pneumatic feeder
CN105360043A (en) * 2015-12-18 2016-03-02 王爱贞 Automatic aquatic feed feeding device
CN105360043B (en) * 2015-12-18 2017-10-24 王爱贞 Aquatic feeds feed device automatically
CN110692572A (en) * 2019-11-22 2020-01-17 李成燕 Float automatic dispensing equipment of formula full angle fish fodder
CN110692572B (en) * 2019-11-22 2021-09-21 中山市农业科技推广中心 Float automatic dispensing equipment of formula full angle fish fodder
CN111758643A (en) * 2020-05-30 2020-10-13 贵州兴夫科技有限公司 Marine organism bait feeding device
CN111955402A (en) * 2020-09-02 2020-11-20 重庆市中药研究院 Medical leech feeding device
CN112407958A (en) * 2020-10-17 2021-02-26 钟妃凤 Sewage treatment throws material charging equipment for hydraulic engineering

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