CN211510194U - Pig triggers formula unloading feeding device - Google Patents

Pig triggers formula unloading feeding device Download PDF

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Publication number
CN211510194U
CN211510194U CN201921900192.6U CN201921900192U CN211510194U CN 211510194 U CN211510194 U CN 211510194U CN 201921900192 U CN201921900192 U CN 201921900192U CN 211510194 U CN211510194 U CN 211510194U
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CN
China
Prior art keywords
pig
chamber
lock body
blanking
feed
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Expired - Fee Related
Application number
CN201921900192.6U
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Chinese (zh)
Inventor
樊红东
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Individual
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Individual
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Priority to CN201921900192.6U priority Critical patent/CN211510194U/en
Application granted granted Critical
Publication of CN211510194U publication Critical patent/CN211510194U/en
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Abstract

The utility model discloses a pig triggering type blanking and feeding device, which comprises a material storage chamber, a blanking mechanism, a touch plate and a blanking chamber; the material storage chamber is provided with a material outlet; the blanking mechanism comprises a rotating shaft, a wedge-shaped groove and a material blocking part, wherein the wedge-shaped groove and the material blocking part are adjacently arranged on the rotating shaft, and the state that the wedge-shaped groove is aligned with the discharge hole can be changed to the state that the material blocking part seals the discharge hole by rotating the rotating shaft; the touch plate can push the material blocking part, so that the rotating shaft is rotated. The utility model has the advantages that: the utility model is used for feeding as required of pig, its novel structure is reasonable, and the stable performance has improved production efficiency, reduces the human cost, can satisfy the demand of the industry scale development of raising pigs.

Description

Pig triggers formula unloading feeding device
Technical Field
The utility model relates to a cultured equipment technical field, concretely relates to pig triggers formula unloading feeding device.
Background
The feed intake of the pigs in different health states is different, the pigs are fed scientifically according to the needs of the health states of the pigs, unnecessary feed waste can be avoided, and the feed cost is saved.
With the continuous development of the pig industry and the continuous aggravation of market competition, the pig industry has to develop to scale, automation and intellectualization; according to the traditional method, the feed required by the pigs is judged according to experience, the feed is put into a trough at one time, and as the feed intake of the pigs in different health states is different, the health states of all the pigs cannot be mastered timely and thoroughly, the feed intake of the pigs in poor health states is reduced, the residual feed is generated in the trough, the feed is wasted, the pigs are mildewed due to untimely cleaning in summer, the health of the pigs is affected, the residual feed is cleaned, and the labor force is increased; therefore, a feeding device for scientifically feeding pigs according to the requirements of the pigs is needed, the feeding is realized according to the requirement of the pigs, the health state of the pigs can be judged in advance according to the feeding condition of the pigs fed at the current time, and the feeding device has the advantages of reasonable structure, stable performance and labor saving, and is an important thing for the pig industry.
Therefore, the pig triggering type blanking feeding device needs to be developed in the field, and the device can solve the problems that feed is wasted and leftovers are manually cleaned when the traditional pig triggering type blanking feeding device is fed into a trough at one time, so that the requirement of large-scale development of the pig industry is met.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide a pig triggers formula unloading feeding device, and device novel structure is reasonable and can solve the tradition and once only throw the material to the trough, extravagant fodder and artifical clearance leftovers problem to satisfy the demand of the industry scale development of raising pigs.
The utility model provides a pig triggering type blanking and feeding device, which comprises a material storage chamber, a blanking mechanism, a touch plate and a blanking chamber; the material storage chamber is provided with a material outlet; the blanking mechanism comprises a rotating shaft, a wedge-shaped groove and a material blocking part, wherein the wedge-shaped groove and the material blocking part are adjacently arranged on the rotating shaft, and the state that the wedge-shaped groove is aligned with the discharge hole can be changed to the state that the material blocking part seals the discharge hole by rotating the rotating shaft; the touch plate can push the material blocking part so as to rotate the rotating shaft; the blanking chamber is positioned below the material storage chamber, the rotating shaft of the blanking mechanism is arranged on the side wall of the blanking chamber, and the touch plate extends out of the blanking chamber from the inside of the blanking chamber.
In one embodiment, one end of the touch plate is hinged with one end face of the material blocking member, and the other end of the touch plate extends out of the blanking chamber.
In one embodiment, one or more support rods are arranged on the side wall of the blanking chamber, and the support rods support the touch plate.
In an embodiment, the blanking chamber further includes a magnetic lock, the magnetic lock includes a suction plate and a lock body, the suction plate is fixed to the touch plate, the lock body is fixed to a side wall of the blanking chamber, the lock body is disposed above the support rod and parallel to the support rod, and the lock body and the support rod limit a movement range of the suction plate.
In one embodiment, the device further comprises a control mechanism, wherein the control mechanism comprises a counting module, a magnetic lock switch module and a control module; the counting module is connected with the suction plate and the lock body passive signal wire and used for accumulating the times of the suction plate touching the lock body; the magnetic lock switch module is connected with the lock body through an electric signal line, the magnetic lock switch module is electrified to the lock body, the lock body generates magnetic attraction force, so that the suction plate touching the lock body is sucked, the magnetic attraction force disappears until the magnetic lock switch module is powered off to the lock body, and the suction plate is separated from the lock body under the action of gravity; the control module controls the magnetic lock switch module to electrify or cut off the lock body according to the counting result and the feeding progress of the counting module.
In one embodiment, the feeding device further comprises a trough, the trough is arranged at the bottom end of the blanking chamber, and the lower portion of the blanking chamber is communicated with the trough.
In one embodiment, the blanking chamber further comprises a cover body arranged at the top end, the center of the cover body is provided with an opening, the size of the opening at the center of the cover body is consistent with the size of the section of the lower end of the storage chamber, and the storage chamber extends into the blanking chamber through the opening at the center of the cover body.
In one embodiment, the opening of the wedge-shaped groove is larger than the width of the discharge hole.
In one embodiment, the top end of the material storage chamber is provided with a cover plate, and the cover plate is provided with a feeding hole.
The utility model discloses possess following advantage at least:
a) the utility model has novel, reasonable and simple structure;
b) the utility model discloses a device can provide required fodder according to the state of pig, saves the fodder.
c) The utility model discloses a device can estimate the pig and only eat the fodder condition, and then judges the health status of pig to reach reasonable good ization pig raising.
The utility model has the advantages that: the utility model is used for feeding as required of pig, its novel structure is reasonable, and the stable performance has improved production efficiency, reduces the human cost, can satisfy the demand of the industry scale development of raising pigs.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pig trigger-only blanking device according to an embodiment of the present application;
FIG. 2 is a schematic view of a pig trigger-only blanking device in an initial state of a touch plate according to an embodiment of the present application;
fig. 3 is a schematic view of a pig trigger-only blanking device in a final state of a touch plate according to an embodiment of the application;
fig. 4 is a schematic view of a blanking mechanism of a pig trigger-only blanking device according to an embodiment of the present application;
fig. 5 is a schematic view of a stock room of an embodiment of a pig trigger-only blanking device according to an embodiment of the present application;
fig. 6 is a wiring diagram of a control mechanism of the pig trigger-only blanking device according to the embodiment of the application.
In the drawings, the designations are as follows:
1-stock room
11-cover plate 12-arc connecting top plate 13-feed inlet 14-discharge outlet
2-Blanking Chamber
3-blanking mechanism
31-rotating shaft 32-wedge-shaped groove 33-material blocking piece
4-touch panel
5-trough
6-support rod
7-lock body
8-suction plate
Detailed Description
The inventor develops a pig trigger type blanking feeding device with a novel and unique structure for the first time through extensive and intensive research. The device solves the problems of feed waste and residual material manual cleaning in the conventional process of feeding the feed into the trough at one time so as to meet the requirement of large-scale development of the pig industry.
In the following description, numerous technical details are set forth in order to provide a better understanding of the present application. However, it will be understood by those skilled in the art that the technical solutions claimed in the present application may be implemented without these technical details and with various changes and modifications based on the following embodiments.
In the present invention, all the directional indicators (such as up, down, left, right, front, rear, etc.) are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present patent application, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1-5, the utility model provides a pig triggers formula unloading feeding device, from last to including down stock room 1, unloading room 2 and trough 5. The material storage chamber 1 is used for caching feed for standby. The blanking chamber 2 is used for installing a blanking structure 3. The trough 5 is used as a material storage point after blanking and provides a place for pigs to eat. In some embodiments, the storage chamber 1, the blanking chamber 2 and the feeding trough 5 can be integrally formed; in other embodiments, the components are combined together as separate components; and the blanking chamber 2 and/or the trough 5 may be omitted, depending on floor space or compact design considerations. In some embodiments, as shown in fig. 5, the material storage chamber 1 is divided into an upper section and a lower section, the upper section can extend into the lower section, and the extending part is wrapped by the lower section, so that the overall length of the material storage chamber 1 can be adjusted, and the material storage chamber 1 can be adjusted to a proper length according to a specific implementation site; in other embodiments, as shown in fig. 1, the overall length of the holding chamber 1 is fixed. The storage chamber 1 has an inlet 13 and an outlet 14, the inlet 13 being a feed inlet, and the outlet 14 allowing feed to flow out through the outlet 14 into the discharge chamber 2. The discharge port 14 is arranged below the material storage chamber 1, the bottom of the material storage chamber 1 is provided with a slope and is funnel-shaped in order to facilitate blanking, and the discharge port 14 is positioned at the bottommost end. The feed opening 13 is arranged at the top of the stock room 1, and in one embodiment, the stock room 1 has a cover plate 11, and the feed opening 13 is located at the top of the cover plate 11. In one embodiment, the cover plate 11 is further provided with an arc-shaped connecting top plate 12, and the opening of the arc-shaped connecting top plate 12 corresponds to the position of the feed port 13.
The blanking chamber 2 has a side wall, and the blanking chamber 2 has a discharge port which can guide the blanking into the trough 5. The side wall of the blanking chamber 2 is used for installing a blanking mechanism 3 and a touch plate 4. As shown in fig. 4, the blanking mechanism 3 includes a rotating shaft 31, a wedge-shaped groove 32 and a material blocking member 33 are disposed on the rotating shaft 31, the rotating shaft 31 rotates to drive the wedge-shaped groove 32 and the material blocking member 33 to rotate in the same direction, and the wedge-shaped groove 32 and the material blocking member 33 are disposed adjacent to each other. The wedge groove 32 is a part having a groove portion for receiving the blanking, and in an initial state, the wedge groove 32 is aligned with the discharge port 14, and an opening of the wedge groove 32 is larger than a width of the discharge port 14. The material blocking part 33 has an arc surface structure, and when the rotating shaft 31 rotates, the arc surface of the material blocking part 33 rotates to the position below the material outlet 14 to close the material outlet 14, so that the material outlet 14 is prevented from falling. The touch plate 4 is used for triggering the wedge-shaped groove 32 and the material blocking piece 33 to rotate, the wedge-shaped groove 32 and the material blocking piece 33 can rotate around the rotating shaft 31 by pushing the material blocking piece 33, and the wedge-shaped groove 32 is moved out of the discharging opening 14 and the material blocking piece 33 is moved to the discharging opening 14. In one embodiment, the touch plate 4 is hinged to one surface of the dam 33. The touch plate 4 extends out of the blanking chamber 2 for the pigs to arch. In order to move the touch plate 4 along a fixed path, a slide may be formed by one or more support bars 6.
The blanking chamber 2 further comprises a cover body, the center of the cover body is provided with an opening, the size of the opening in the center of the cover body is consistent with the size of the cross section of the lower end of the storage chamber 1, and the storage chamber 1 extends into the blanking chamber 2 through the opening in the center of the cover body.
The blanking chamber 2 further comprises a magnetic lock, the magnetic lock comprises a suction plate 8 and a lock body 7, the suction plate 8 is fixed on the touch plate 4, two ends of the lock body 7 are fixed on the side wall of the blanking chamber 2, the lock body 7 is arranged above the support rod 6 and is parallel to the support rod 6, and the lock body 7 and the support rod 6 limit the moving range of the suction plate 8, namely limit the up-and-down moving range of the touch plate 4.
The device of the embodiment further comprises a control mechanism, as shown in fig. 6, the control mechanism comprises a control module, a counting module and a magnetic lock switch module; the magnetic lock switch module is connected with an electric signal line of the lock body 7, the counting module is connected with a passive signal line of the lock body 7, and the counting module is connected with a passive signal line of the suction plate 8; the magnetic lock switch module is electrified to the lock body 7 through an electric signal wire, the lock body 7 generates magnetic attraction force, so that the suction plate 8 touching the lock body 7 is attracted until the magnetic lock switch module is powered off to the lock body 7, the magnetic attraction force disappears, and the suction plate 8 is separated from the lock body 7 under the action of gravity; when the touch plate 4 moves upwards and drives the suction plate 8 to move upwards until the suction plate 8 touches the lock body 7, the suction plate 8 is in contact with the metal part of the lock body 7, the counting module receives a short circuit signal of a passive signal wire, the counter of the counting module is added with 1, when the magnetic lock switch module cuts off the power of the lock body 7, the lock body 7 has no suction force on the suction plate 8, the touch plate 4 moves downwards under the action of self gravity and drives the suction plate 8 to move downwards, the suction plate 8 is separated from the lock body 7, the counting module receives a broken circuit signal of the passive signal wire, and the counting module enters the next counting preparation.
During the use, just to the fodder export of stockline, connect the feed inlet 13 of roof 12 with the arc, connect roof 12 and stockline pipe connection through the connecting piece with the arc, with inciting somebody to action the utility model discloses set up in the lower extreme of stockline pipe fitting.
The first charging condition is as follows: when the materials are loaded, as shown in fig. 3, the lock body 7 is attracted with the suction plate 8, so that the touch plate 4 is kept at the highest position, the material blocking part 33 is opposite to and blocks the discharge hole 14 of the material storage chamber 1, the granular feed falls into the material storage chamber 1 from the feed outlet of the material line pipe fitting, and the material storage chamber 1 is gradually filled upwards from the discharge hole 14 of the material storage chamber 1 until the material storage chamber 1 is filled, and the materials are loaded; in the charging process, the lock body 7 is attracted with the suction plate 8, so that the pigs can not touch the touch plate 4 and the charging process is not influenced.
And (2) loading condition II: during charging, as shown in fig. 2, the suction plate 8 leans against the support rod 6, the opening of the wedge-shaped groove 32 faces the discharge hole 14 of the material storage chamber 1, the granular feed falls into the material storage chamber 1 from the feed outlet of the stockline pipe fitting, the feed falls into the wedge-shaped groove 32 from the discharge hole 14 of the material storage chamber 1, when the wedge-shaped groove 32 is to be filled, the feed in the wedge-shaped groove 32 blocks the discharge hole 14 of the material storage chamber 1, the feed in the material storage chamber 1 is prevented from falling from the discharge hole 14 of the material storage chamber 1, the material storage chamber 1 is gradually filled upwards from the discharge hole 14 of the material storage chamber 1 until the material storage chamber 1 is filled; at this charging process, because of magnetic force lock switch module to 7 circular telegrams of lock body, lock body 7 has produced magnetic attraction, the pig only upwards touches touch panel 4 for 8 upward movements of suction disc touch panel 7, lock body 7 and 8 adsorptions of suction disc make touch panel 4 keep at the highest position, keep off material piece 33 just to and shutoff stock room 1 discharge gate 14, at this kind of charging process, the pig only can touch panel 4 once, do not influence whole charging effect.
After the feeding is finished for one time, the pig is prepared for touch feeding, the magnetic lock switch module powers off the lock body 7, the magnetic attraction force disappears, the suction plate 8 and the touch plate 4 move downwards under the action of gravity until the suction plate 8 leans against the support rod 6, as shown in fig. 2, the opening of the wedge-shaped groove 32 is right opposite to the discharge port 14 of the material storage chamber 1, the feed falls into the wedge-shaped groove 32 from the discharge port 14 of the material storage chamber 1, and when the wedge-shaped groove 32 is about to be filled, the feed in the wedge-shaped groove 32 blocks the discharge port 14 of the material storage chamber 1, and the feed in the material storage chamber 1 is prevented from falling from the discharge port; and the counting module is used for clearing the counting and preparing for recounting.
When a pig only starts to eat, as shown in fig. 1, fig. 2 and fig. 4, when the pig only touches the touch panel 4 to move upwards as shown in fig. 2, the blocking piece 33 is driven to rotate anticlockwise, the rotating shaft 31 is driven to rotate anticlockwise, the wedge-shaped groove 32 is driven to rotate anticlockwise, the opening of the wedge-shaped groove 32 is inclined, feed in the wedge-shaped groove 32 falls into the feeding trough 5, the blocking piece 33 also rotates anticlockwise along with the rotating shaft 31, and the discharge hole 14 of the material storage chamber 1 is blocked; the touch plate 4 moves upwards and drives the suction plate 8 to move upwards until the suction plate 8 touches the lock body 7, the counter of the counting module is increased by 1, the pigs only stop pushing up the touch plate 4, the touch plate 4 moves downwards under the action of self gravity and drives the material blocking piece 33 to rotate clockwise, so that the rotating shaft 31 is driven to rotate clockwise, the wedge-shaped groove 32 rotates clockwise along with the rotating shaft 31 until the suction plate 8 touches the support rod 6, the touch plate 4 stops moving downwards, and finally the opening of the wedge-shaped groove 32 is opposite to the discharge hole 14 of the material storage chamber 1; the feed falls into the wedge-shaped groove 32 from the discharge hole 14 of the storage chamber 1, and preparation is made for the next time when the pig touches the blanking.
The feed intake of the pigs at different growth stages is different, and the pigs are fed scientifically and quantitatively according to the requirements of the pigs, so that the healthy growth of the pigs is facilitated; every touching touch panel 4 of pig is the ration blanking, before feeding at every turn, confirm the volume of feeding according to pig growth stage and only set up the number of times that can touch panel 4 for the pig at control module, when control module detects the accumulative total number of times of touching of count module and reaches the ration and feeds the number of times that can touch, control module sends the circular telegram instruction to magnetic lock switch module, magnetic lock switch module gives 7 circular telegrams of lock body, 7 production magnetic attraction of lock body, the pig only touches touch panel 4 and makes suction disc 8 touch lock body 7, magnetic attraction makes suction disc 8 and 7 actuation of lock body, touch panel 4 keeps at the highest position, the pig only can't touch, thereby reach the ration purpose of feeding.
This device reaches the ration through single touching ration blanking and control touching blanking number of times and feeds, only touches the feeding in-process at the pig and can continue to feed to stock room 1, also can stop feeding to stock room 1 under the condition that stock room 1 capacity is greater than the feed intake of only once feeding of pig.
After once feeding, can output the number of times of touching and the required number of times of touching of ration feeding according to the count module and carry out the comparison, and then the pig that the analysis was fed when only eats the condition and the health status of pig.
The utility model discloses possess following advantage at least:
a) the utility model has novel, reasonable and simple structure;
b) the utility model discloses a device can provide required fodder according to the state of pig, saves the fodder.
c) The utility model discloses a device can estimate the pig and only eat the fodder condition, and then judges the health status of pig to reach reasonable good ization pig raising.
All documents mentioned in this application are to be considered as being incorporated in their entirety into the disclosure of this application so as to be subject to modification as necessary. Further, it is understood that various changes or modifications may be made to the present application by those skilled in the art after reading the above disclosure of the present application, and such equivalents are also within the scope of the present application as claimed.

Claims (9)

1. A pig trigger type blanking feeding device is characterized by comprising a material storage chamber, a blanking mechanism, a touch plate and a blanking chamber; the material storage chamber is provided with a material outlet; the blanking mechanism comprises a rotating shaft, a wedge-shaped groove and a material blocking part, wherein the wedge-shaped groove and the material blocking part are adjacently arranged on the rotating shaft, and the state that the wedge-shaped groove is aligned with the discharge hole can be changed to the state that the material blocking part seals the discharge hole by rotating the rotating shaft; the touch plate can push the material blocking part so as to rotate the rotating shaft; the blanking chamber is positioned below the material storage chamber, the rotating shaft of the blanking mechanism is arranged on the side wall of the blanking chamber, and the touch plate extends out of the blanking chamber from the inside of the blanking chamber.
2. The pig trigger-only feed feeding device of claim 1, wherein one end of the touch plate is hinged to one end surface of the material blocking member, and the other end of the touch plate extends out of the feed chamber.
3. The pig trigger-only feed feeding device of claim 2, wherein one or more support rods are provided on the side wall of the feeding chamber, the support rods supporting the touch plate.
4. The pig trigger-only feeding device according to claim 3, wherein the feeding chamber further comprises a magnetic lock, the magnetic lock comprises a suction plate and a lock body, the suction plate is fixed on the touch plate, the lock body is fixed on the side wall of the feeding chamber, the lock body is arranged above the support rod and parallel to the support rod, and the lock body and the support rod limit the movement range of the suction plate.
5. The pig trigger-only feed feeding device of claim 4, wherein the device further comprises a control mechanism, the control mechanism comprising a counting module, a magnetic lock switch module and a control module; the counting module is connected with the suction plate and the lock body passive signal wire and used for accumulating the times of touching the lock body by the suction plate; the magnetic lock switch module is connected with the lock body through an electric signal line, the magnetic lock switch module is electrified to the lock body, the lock body generates magnetic attraction force, so that the suction plate touching the lock body is sucked, the magnetic attraction force disappears until the magnetic lock switch module is powered off to the lock body, and the suction plate is separated from the lock body under the action of gravity; the control module controls the magnetic lock switch module to electrify or cut off the lock body according to the counting result and the feeding progress of the counting module.
6. The pig trigger-only feed feeding device of claim 1, further comprising a trough disposed at the bottom end of the feed chamber, the lower portion of the feed chamber being in communication with the trough.
7. The pig trigger-only feeding device according to claim 1, wherein the feeding chamber further comprises a cover body arranged at the top end, an opening is formed in the center of the cover body, the size of the opening in the center of the cover body is consistent with the size of the cross section of the lower end of the storage chamber, and the storage chamber extends into the feeding chamber through the opening in the center of the cover body.
8. The pig trigger-only feed feeding device of claim 1, wherein the opening of the wedge-shaped trough is wider than the width of the discharge outlet.
9. The pig trigger-only feed feeding device of claim 1, wherein a cover plate is arranged at the top end of the stock room, and the cover plate is provided with a feed inlet.
CN201921900192.6U 2019-11-06 2019-11-06 Pig triggers formula unloading feeding device Expired - Fee Related CN211510194U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921900192.6U CN211510194U (en) 2019-11-06 2019-11-06 Pig triggers formula unloading feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921900192.6U CN211510194U (en) 2019-11-06 2019-11-06 Pig triggers formula unloading feeding device

Publications (1)

Publication Number Publication Date
CN211510194U true CN211510194U (en) 2020-09-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921900192.6U Expired - Fee Related CN211510194U (en) 2019-11-06 2019-11-06 Pig triggers formula unloading feeding device

Country Status (1)

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CN (1) CN211510194U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113448274A (en) * 2021-06-29 2021-09-28 长沙瑞和数码科技有限公司 Precise feeding method, device, equipment and readable storage medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113448274A (en) * 2021-06-29 2021-09-28 长沙瑞和数码科技有限公司 Precise feeding method, device, equipment and readable storage medium

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Granted publication date: 20200918