Fermented feed production process and production equipment thereof

Abstract

The invention provides fermented feed production equipment which comprises a main barrel, an observation window is fixedly connected to the circumferential surface of the main barrel, an upper motor and a water suction pump are fixedly connected to the top of the main barrel, an inflation pump is fixedly connected to the circumferential surface of the main barrel, and a rotating disc is rotationally connected to the top surface in the main barrel; the bottom output end of the upper motor is fixedly connected with a rotating disc, the bottom of the rotating disc is fixedly connected with a plurality of upper electric rods, the upper electric rods are uniformly distributed at the bottom of the rotating disc, the bottoms of the upper electric rods are fixedly connected with stirring shafts, and the stirring shafts are hollow pipes; a material guiding assembly, a humidifying assembly and an inner groove are arranged on the circumferential surface of the stirring shaft, and an inner motor is fixedly connected to the interior of the inner groove. According to the invention, turning equipment and fermentation equipment are combined together, so that the production cost is reduced, the production process is optimized, and the production efficiency and quality of fermented feed are improved.

Description

Technical Field

[0001] The invention relates to the technical field of fermented feed production, in particular to a fermented feed production process and production equipment thereof. Background Art

[0002] Fermented feed is one of the main components of modern organic feed. It is made by microorganisms, such as bacteria, yeast and mold, under artificially controlled conditions, decomposing or converting macromolecules in feed raw materials, such as cellulose, hemicellulose, pectin, lignin, etc., into small molecules, such as organic acids, enzymes, amino acids, etc., thereby improving the nutritional value and digestibility of feed.

[0003] In the existing fermented feed production process, because it is all produced in large quantities, the same batch of feed needs to be constantly turned up and down, inside and outside during the production process to ensure smooth fermentation. However, the up and down, inside and outside turning processes in the production process are generally carried out in the supporting turning equipment, and only fermentation is carried out in the fermentation equipment, resulting in high production costs and complicated process flows. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a fermented feed production process and production equipment thereof, which solve the problems of difficult up and down, inside and outside turning of the fermented feed during the prior art production process, high production cost and complex process.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fermented feed production equipment, including a main barrel, an observation window is fixedly connected to the circumferential surface of the main barrel, an upper motor and a water pump are fixedly connected to the top of the main barrel, an air pump is fixedly connected to the circumferential surface of the main barrel, a turntable is rotatably connected to the inner top surface of the main barrel, the bottom output end of the upper motor is fixedly connected to the turntable, an upper electric rod is fixedly connected to the bottom of the turntable, a plurality of upper electric rods are provided and are evenly distributed at the bottom of the turntable, a stirring shaft is fixedly connected to the bottom of the upper electric rod, the stirring shaft is a hollow tube, a material guide assembly, a humidifying assembly and an inner tank are provided on the circumferential surface of the stirring shaft, an inner motor is fixedly connected to the interior of the inner tank, a sealing plate is fixedly connected to the circumferential surface of the stirring shaft, and the There are four inner tanks, four inner motors and four sealing plates, which are evenly distributed on the stirring shaft; the sealing plate is rotatably connected to the first stirring rod and the second stirring rod; there are two of the first stirring rod and the second stirring rod, which are symmetrically distributed on the outside of the stirring shaft; the output end of the inner motor is fixedly connected to the first stirring rod and the second stirring rod; rake claws and temperature and humidity sensors are fixedly connected to the circumferential surfaces of the first stirring rod and the second stirring rod; there are multiple rake claws and temperature and humidity sensors, which are staggered on the first stirring rod and the second stirring rod; an outer sleeve is fixedly connected to the bottom of the main barrel; a side material port is provided on the circumferential surface of the outer sleeve; there are multiple side material ports, which are evenly distributed on the bottom of the outer sleeve; an auger is provided inside the outer sleeve.

[0008] The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

[0009] Preferably, the humidifying assembly includes a water ring pipe, a branch pipe, a nozzle and a connecting water pipe, the water ring pipe is located between the lower side plate and the sealing plate, the water ring pipe is rotatably connected to the circumferential surface of the stirring shaft, the branch pipe is fixedly connected to the circumferential surface of the water ring pipe, the number of the branch pipes is multiple and evenly distributed on the water ring pipe, the bottom of the branch pipe is fixedly connected to a nozzle, the number of the nozzles is multiple and evenly distributed on the branch pipe, one end of one of the branches away from the water ring pipe is fixedly connected to a connecting water pipe, and the connecting water pipe is a foldable water pipe.

[0010] Preferably, a lower motor is fixedly connected to the bottom of the main barrel, a top output end of the lower motor is fixedly connected to the auger, and the outer sleeve is located inside the stirring shaft.

[0011] Preferably, a feed pipe is fixedly connected to the top of the main barrel, a discharge pipe is fixedly connected to the bottom of the main barrel, and a support is fixedly connected to the bottom of the main barrel. There are multiple support pillars, which are evenly distributed at the bottom of the main barrel.

[0012] Preferably, the output end of the air pump passes through the main barrel, and a filter is fixedly provided inside the output end.

[0013] Preferably, the top of the connecting water pipe passes through the main barrel and is fixedly connected to the output end of the water pump, and the input end of the water pump is connected to an external water supply system.

[0014] Preferably, the upper motor, the water pump, the air pump, the upper electric rod, the lower electric rod, the inner motor, the temperature and humidity sensor and the lower motor are all electrically connected to an external controller.

[0015] A fermented feed production process comprises the following steps:

[0016] S1. Weigh the raw materials needed for fermented feed according to the proportion and then dry them;

[0017] S2, the dried mixed feed and the fermentation bacteria are mixed in proportion and put into the main barrel, then the upper electric rod is started to move the stirring shaft downward, and the rake claw is inserted into the feed, and then the upper motor is started to rotate the stirring shaft, and at the same time the inner motor is started to rotate the first stirring rod and the second stirring rod, so that the top layer of the feed is stirred and turned by the rake claw, and during the stirring process, the water pump is started to introduce clean water and spray it on the upper layer of the feed through the nozzle to ferment it, and at the same time the lower motor is started to rotate the auger, so that the bottom layer of the feed is transported upward, and discharged from the top of the stirring shaft, and evenly distributed on the upper layer under the action of the guide cloth;

[0018] S3. During the fermentation process, the mixed feed will generate a lot of heat and consume the oxygen inside the main barrel. Open the feed pipe, start the air pump, slowly inject air into the feed inside the main barrel, and turn it over and stir it at the same time;

[0019] S4. When fermentation is completed, the mixed feed in the main barrel is taken out and then dried;

[0020] S5. Pack and package the dried feed.

[0021] (III) Beneficial effects

[0022] The present invention provides a fermented feed production process and production equipment thereof, which have the following beneficial effects:

[0023] By arranging a stirring shaft, a supporting rod, an upper side plate, an upper connecting shaft, an upper connecting ring, a lower electric rod, a lower connecting ring, a lower connecting shaft, a lower side plate, a material guide cloth, an outer sleeve, a side material port, an auger and a lower motor, the feed at the bottom can be transported upward, and the material guide cloth can be used to evenly distribute the transported feed on the top layer of the feed, thereby realizing the up and down turning of the feed. By arranging an inner trough, an inner motor, a sealing plate, a first stirring rod, a first stirring rod, a rake claw and a temperature and humidity sensor, the top layer of the feed can be continuously turned over, thereby making the fermentation of the feed more uniform and more efficient. By arranging a water pump, a water ring pipe, a branch pipe, a nozzle and a connecting water pipe, during the turning process of the top layer of the feed, clean water is sprayed on the feed, thereby ensuring the fermentation humidity of the feed and ensuring the good progress of the fermentation. Air can also be injected into the feed through an air pump to ensure that there is sufficient oxygen in the main barrel. The present invention combines turning with fermentation equipment, reduces production costs, optimizes production processes, and improves the production efficiency and quality of fermented feed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of a fermented feed production device proposed by the present invention;

[0025] Figure 2 This is a diagram showing the internal structure of a main barrel of a fermented feed production device proposed by the present invention;

[0026] Figure 3 This is a structural diagram of a stirring shaft of a fermented feed production device proposed by the present invention;

[0027] Figure 4 This is a structural diagram of a support rod of a fermented feed production device proposed by the present invention;

[0028] Figure 5 This is a water ring pipe structure diagram of a fermented feed production equipment proposed by the present invention;

[0029] Figure 6 This is a structural diagram of an auger for a fermented feed production device proposed in the present invention.

[0030] Among them, 1. main barrel; 2. observation window; 3. upper motor; 4. water pump; 5. air pump; 6. turntable; 7. upper electric rod; 8. stirring shaft; 9. support rod; 10. upper side plate; 11. upper connecting shaft; 12. upper connecting ring; 13. lower electric rod; 14. lower connecting ring; 15. lower connecting shaft; 16. lower side plate; 17. material guide cloth; 18. inner groove; 19. inner motor; 20. sealing plate; 21. first stirring rod; 22. first stirring rod; 23. rake claw; 24. temperature and humidity sensor; 25. water ring pipe; 26. branch pipe; 27. nozzle; 28. connecting water pipe; 29. ​​outer sleeve; 30. side material port; 31. auger; 32. lower motor; 33. support. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1-6 As shown, an embodiment of the present invention provides a fermented feed production device, including a main barrel 1, an observation window 2 is fixedly connected to the circumferential surface of the main barrel 1, which is convenient for observing the amount of feed added and the stirring condition, an upper motor 3 and a water pump 4 are fixedly connected to the top of the main barrel 1, an air pump 5 is fixedly connected to the circumferential surface of the main barrel 1, the output end of the air pump 5 passes through the main barrel 1, and a filter is fixedly arranged inside the output end, a turntable 6 is rotatably connected to the inner top surface of the main barrel 1, the bottom output end of the upper motor 3 is fixedly connected to the turntable 6, an upper electric rod 7 is fixedly connected to the bottom of the turntable 6, a plurality of upper electric rods 7 are provided, and are evenly distributed at the bottom of the turntable 6, a stirring shaft 8 is fixedly connected to the bottom of the upper electric rod 7, and the stirring shaft 8 is a hollow tube. When the upper electric rod 7 is started, the stirring shaft 8 can be moved up and down, thereby stirring feeds at different heights.

[0033] A material guide assembly, a humidifying assembly and an inner tank 18 are arranged on the circumferential surface of the stirring shaft 8, an inner motor 19 is fixedly connected to the inner part of the inner tank 18, a sealing plate 20 is fixedly connected to the circumferential surface of the stirring shaft 8, four inner tanks 18, four inner motors 19 and four sealing plates 20 are arranged, and are evenly distributed on the stirring shaft 8, a first stirring rod 21 and a second stirring rod 22 are rotatably connected to the inner part of the sealing plate 20, two first stirring rods 21 and a second stirring rod 22 are arranged, and are symmetrically distributed on the outer side of the stirring shaft 8, and the output end of the inner motor 19 is connected to the outer side of the stirring shaft 8. The first stirring rod 21 and the second stirring rod 22 are fixedly connected, and rake claws 23 and temperature and humidity sensors 24 are fixedly connected to the circumferential surfaces of the first stirring rod 21 and the second stirring rod 22. There are multiple rake claws 23 and temperature and humidity sensors 24, which are staggered on the first stirring rod 21 and the second stirring rod 22. The temperature and humidity sensor 24 can monitor the temperature and humidity of the feed. When the internal motor 19 is started, the first stirring rod 21 and the second stirring rod 22 can be rotated, so that the rake claws 23 can turn over the upper layer of feed to ensure uniform fermentation of the feed.

[0034] An outer sleeve 29 is fixedly connected to the bottom of the main barrel 1, and a side material port 30 is arranged on the circumferential surface of the outer sleeve 29. There are multiple side material ports 30, which are evenly distributed at the bottom of the outer sleeve 29. An auger 31 is arranged inside the outer sleeve 29. When the auger 31 rotates, the feed falling from the side material port 30 can be transported upward and discharged from the top of the stirring shaft 8.

[0035] The material guide assembly includes a support rod 9, an upper side plate 10, an upper connecting shaft 11, an upper connecting ring 12, a lower electric rod 13, a lower connecting ring 14, a lower connecting shaft 15 and a lower side plate 16. The support rod 9 is rotatably connected to the circumferential surface of the stirring shaft 8. The bottom of the end of the support rod 9 away from the stirring shaft 8 is fixedly connected to the upper side plate 10. There are two upper side plates 10. The upper connecting shaft 11 is fixedly connected between the two upper side plates 10. The upper connecting ring 12 is rotatably connected to the circumferential surface of the upper connecting shaft 11. The lower electric rod 13 is fixedly connected to the circumferential surface of the upper connecting ring 12. The bottom of the lower electric rod 13 is fixedly connected to the lower connecting ring 14. The inner circumferential surface of the lower connecting ring 14 is rotatably connected to the lower connecting ring 14. There is a lower connecting shaft 15, and lower side plates 16 are fixedly connected on both sides of the lower connecting shaft 15. There are two lower side plates 16, and there are multiple material guide components, which are evenly fixedly connected to the outside of the stirring shaft 8. A material guide cloth 17 is fixedly connected between two adjacent material guide components. The material guide cloth 17 is fixedly connected to the support rod 9. The material guide cloth 17 is fan-shaped, and the material guide cloth 17 has a short arc edge and is fixedly connected to the stirring shaft 8. When feed is discharged from the top of the stirring shaft 8, it will fall to the material guide cloth 17 below, starting the lower electric rod 13. The different telescopic degrees of the lower electric rod 13 make the angles between the support rod 9 and the stirring shaft 8 different, so that the feed falls evenly at different positions on the outside of the stirring shaft 8.

[0036] The humidifying assembly includes a water ring pipe 25, a branch pipe 26, a nozzle 27 and a connecting water pipe 28. The water ring pipe 25 is located between the lower side plate 16 and the sealing plate 20. The water ring pipe 25 is rotatably connected to the circumferential surface of the stirring shaft 8. The branch pipe 26 is fixedly connected to the circumferential surface of the water ring pipe 25. There are multiple branch pipes 26 and they are evenly distributed on the water ring pipe 25. The bottom of the branch pipe 26 is fixedly connected to a nozzle 27. There are multiple nozzles 27 and they are evenly distributed on the branch pipe 26. One end of one branch pipe 26 away from the water ring pipe 25 is fixedly connected to a connecting water pipe 28. The connecting water pipe 28 is a foldable water pipe. The top of the connecting water pipe 28 passes through the main barrel 1 and is fixedly connected to the output end of the water pump 4. The input end of the water pump 4 is connected to the external water supply system. When the water pump 4 is started, clean water can be sucked in and evenly sprayed on the feed through the nozzle 27. The water ring pipe 25 can move up and down with the stirring shaft 8.

[0037] A lower motor 32 is fixedly connected to the bottom of the main barrel 1, and the top output end of the lower motor 32 is fixedly connected to the auger 31. The outer sleeve 29 is located inside the stirring shaft 8. A feed pipe is fixedly connected to the top of the main barrel 1, and a discharge pipe is fixedly connected to the bottom of the main barrel 1. A support 33 is fixedly connected to the bottom of the main barrel 1. There are multiple support pillars 33, which are evenly distributed at the bottom of the main barrel 1. The upper motor 3, the water pump 4, the air pump 5, the upper electric rod 7, the lower electric rod 13, the inner motor 19, the temperature and humidity sensor 24 and the lower motor 32 are all electrically connected to the external controller.

[0038] A fermented feed production process comprises the following steps:

[0039] S1. Weigh the raw materials needed for fermented feed according to the proportion and then dry them;

[0040] S2, the dried mixed feed and the fermentation bacteria are mixed in proportion and then put into the main barrel 1, then the upper electric rod 7 is started to move the stirring shaft 8 downward, and the rake claw 23 is inserted into the feed, and then the upper motor 3 is started to rotate the stirring shaft 8, and at the same time the inner motor 19 is started to rotate the first stirring rod 21 and the second stirring rod 22, so that the top layer of the feed is stirred and turned by the rake claw 23, and during the stirring process, the water pump 4 is started to introduce clean water and spray it on the upper layer of the feed through the nozzle 27 to ferment it, and at the same time the lower motor 32 is started to rotate the auger 31, so that the bottom layer of the feed is transported upward, and discharged from the top of the stirring shaft 8, and evenly distributed on the upper layer under the action of the guide cloth 17;

[0041] S3. During the fermentation process, the mixed feed will generate a lot of heat and consume the oxygen inside the main barrel 1. Open the feed pipe, start the air pump 5, slowly inject air into the feed inside the main barrel 1, and turn it over and stir it at the same time;

[0042] S4, when fermentation is completed, take out the mixed feed in the main barrel 1 and then dry it;

[0043] S5. Pack and package the dried feed.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fermented feed production device, comprising a main barrel (1), characterized in that: An observation window (2) is fixedly connected to the circumferential surface of the main barrel (1), an upper motor (3) and a water pump (4) are fixedly connected to the top of the main barrel (1), an air pump (5) is fixedly connected to the circumferential surface of the main barrel (1), a turntable (6) is rotatably connected to the inner top surface of the main barrel (1), the bottom output end of the upper motor (3) is fixedly connected to the turntable (6), the bottom of the turntable (6) is fixedly connected to an upper electric rod (7), and a plurality of upper electric rods (7) are provided and are evenly distributed. The upper electric rod (7) is arranged at the bottom of the turntable (6); the bottom of the upper electric rod (7) is fixedly connected to a stirring shaft (8); the stirring shaft (8) is a hollow tube; the circumferential surface of the stirring shaft (8) is provided with a material guide component, a humidifying component and an inner groove (18); the interior of the inner groove (18) is fixedly connected to an inner motor (19); the circumferential surface of the stirring shaft (8) is fixedly connected to a sealing plate (20); the number of the inner groove (18), the inner motor (19) and the sealing plate (20) is four, and they are evenly distributed on the stirring shaft (8). On the mixing shaft (8), the sealing plate (20) is internally rotatably connected with a first stirring rod (21) and a second stirring rod (22), the first stirring rod (21) and the second stirring rod (22) are both provided with two in number and symmetrically distributed on the outside of the mixing shaft (8), the output end of the inner motor (19) is fixedly connected to the first stirring rod (21) and the second stirring rod (22), and the circumferential surfaces of the first stirring rod (21) and the second stirring rod (22) are both fixedly connected with a rake claw (23) and a temperature and humidity The sensor (24) is provided in a plurality of the rake claws (23) and the temperature and humidity sensor (24), and the rake claws (23) and the temperature and humidity sensor (24) are arranged in a plurality and are staggeredly distributed on the first stirring rod (21) and the second stirring rod (22); the bottom of the main barrel (1) is fixedly connected with an outer sleeve (29); a side material port (30) is arranged on the circumferential surface of the outer sleeve (29); the side material port (30) is arranged in a plurality and is evenly distributed on the bottom of the outer sleeve (29); and an auger (31) is arranged inside the outer sleeve (29).

2. A fermented feed production equipment according to claim 1, characterized in that: The material guide assembly comprises a support rod (9), an upper side plate (10), an upper connecting shaft (11), an upper connecting ring (12), a lower electric rod (13), a lower connecting ring (14), a lower connecting shaft (15) and a lower side plate (16); the support rod (9) is rotatably connected to the circumferential surface of the stirring shaft (8); the bottom of one end of the support rod (9) away from the stirring shaft (8) is fixedly connected to the upper side plate (10); two upper side plates (10) are provided; an upper connecting shaft (11) is fixedly connected between the two upper side plates (10); an upper connecting ring (12) is rotatably connected to the circumferential surface of the upper connecting shaft (11); and a lower connecting ring (12) is fixedly connected to the circumferential surface of the upper connecting ring (12). A lower electric rod (13) is connected, the bottom of the lower electric rod (13) is fixedly connected to a lower connecting ring (14), the inner circumferential surface of the lower connecting ring (14) is rotatably connected to a lower connecting shaft (15), both sides of the lower connecting shaft (15) are fixedly connected to lower side plates (16), the number of the lower side plates (16) is two, the number of the material guide components is multiple, and they are evenly fixedly connected to the outside of the stirring shaft (8), a material guide cloth (17) is fixedly connected between two adjacent material guide components, the material guide cloth (17) is fixedly connected to the support rod (9), the material guide cloth (17) is fan-shaped, and the material guide cloth (17) has a short arc edge and is fixedly connected to the stirring shaft (8).

3. A fermented feed production equipment according to claim 2, characterized in that: The humidifying assembly comprises a water ring pipe (25), a branch pipe (26), a nozzle (27) and a connecting water pipe (28). The water ring pipe (25) is located between the lower side plate (16) and the sealing plate (20). The water ring pipe (25) is rotatably connected to the circumferential surface of the stirring shaft (8). The circumferential surface of the water ring pipe (25) is fixedly connected with the branch pipe (26). There are a plurality of branch pipes (26) which are evenly distributed on the water ring pipe (25). The bottom of the branch pipe (26) is fixedly connected with the nozzle (27). There are a plurality of nozzles (27) which are evenly distributed on the branch pipe (26). One end of one of the branch pipes (26) away from the water ring pipe (25) is fixedly connected with the connecting water pipe (28). The connecting water pipe (28) is a foldable water pipe.

4. A fermented feed production equipment according to claim 3, characterized in that: A lower motor (32) is fixedly connected to the bottom of the main barrel (1), a top output end of the lower motor (32) is fixedly connected to the auger (31), and the outer sleeve (29) is located inside the stirring shaft (8).

5. The fermented feed production equipment according to claim 3, characterized in that: The top of the main barrel (1) is fixedly connected to a feed pipe, the bottom of the main barrel (1) is fixedly connected to a discharge pipe, and the bottom of the main barrel (1) is fixedly connected to a support (33), wherein a plurality of support (33) are provided and are evenly distributed at the bottom of the main barrel (1).

6. A fermented feed production equipment according to claim 3, characterized in that: The output end of the air pump (5) passes through the main barrel (1), and a filter is fixedly arranged inside the output end.

7. The fermented feed production equipment according to claim 3, characterized in that: The top of the connecting water pipe (28) passes through the main barrel (1) and is fixedly connected to the output end of the water pump (4), and the input end of the water pump (4) is connected to an external water supply system.

8. The fermented feed production equipment according to claim 3, characterized in that: The upper motor (3), the water pump (4), the air pump (5), the upper electric rod (7), the lower electric rod (13), the inner motor (19), the temperature and humidity sensor (24) and the lower motor (32) are all electrically connected to an external controller.

9. A fermented feed production process, based on a fermented feed production device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Weigh the raw materials needed for fermented feed according to the proportion and then dry them; S2, the dried mixed feed and the fermentation bacteria are mixed in proportion and then put into the main barrel (1), then the upper electric rod (7) is started to move the stirring shaft (8) downward, and the rake claw (23) is inserted into the feed, then the upper motor (3) is started to rotate the stirring shaft (8), and at the same time the inner motor (19) is started to rotate the first stirring rod (21) and the second stirring rod (22), so that the top layer of the feed is stirred and turned by the rake claw (23), and during the stirring process, the water pump (4) is started to introduce clean water and spray it on the upper layer of the feed through the nozzle (27) to ferment it, and at the same time the lower motor (32) is started to rotate the auger (31), so that the bottom layer of the feed is transported upward and discharged from the top of the stirring shaft (8), and evenly distributed on the upper layer under the action of the material guide cloth (17); S3. During the fermentation process, the mixed feed will generate a large amount of heat and consume the oxygen inside the main barrel (1). Open the feed pipe, start the air pump (5), slowly inject air into the feed inside the main barrel (1), and turn it over and stir it at the same time; S4, when fermentation is complete, taking out the mixed feed in the main barrel (1) and then drying it; S5. Pack and package the dried feed.

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