Grease adding device for feed production

Abstract

According to the grease adding device for feed production, the belt weigher is arranged to continuously convey feed in the discharging bin to the discharging terminal, and meanwhile, the grease spraying bin is arranged below the discharging terminal to spray grease to the falling feed. According to the automatic grease adding device, grease is sprayed to the feed in the continuous falling process of the feed, the purpose of adding the grease into the feed is achieved, the automatic grease adding device has the advantages of being continuous in discharging and high in production efficiency, and the defect that in an existing grease adding mode, the production efficiency is low due to intermittent discharging is overcome; and the weighing sensor, the speed sensor, the valve group, the flow meter and the liquid transfer pump are all electrically connected with the controller, so that the addition amount of grease in the feed can be regulated and controlled in real time through the controller, and the device has the advantages of being accurate, real-time, labor-saving and adjustable and controllable.

Description

Technical Field

[0001] The present application relates to the technical field of feed production, and in particular to a grease adding device for feed production. Background Art

[0002] Feed oil and fat addition is a common feed industry method, which aims to provide essential fats and oils for animal feed. The purpose of feed oil and fat addition can include increasing the energy density of feed, improving the taste and edibility of feed, providing essential fatty acids, etc. In the process of feed oil and fat addition, various different sources of oil and fat are often used. Common feed oil and fat additives include vegetable oils (such as soybean oil, palm oil, sunflower oil), animal fats (such as fish oil, chicken fat), microbial oils (such as single-cell algae oil), etc. These oil and fat additives can be used alone or added to the feed in the form of a mixture, and adjusted according to the needs of different feeding animals and feed formulas.

[0003] Since oil and water are incompatible, it is difficult to mix oil and other water-soluble feed ingredients evenly. When oil and other ingredients in the feed are mixed together, the strength of the prepared feed particles will be reduced, causing the feed particles to be easily broken and powdered, affecting transportation and the taste of the feed. Therefore, the existing method of adding oil and fat mostly adopts the method of adding oil and fat later, that is, the oil and fat is atomized and sprayed onto the surface of the granulated feed particles. After the feed particles absorb the oil and fat, the addition of oil and fat to the feed is completed. However, this method mostly places the feed particles in a container, sprays the oil and fat on the surface of the feed under stirring, and after completing the mixing of a batch of feed, the oil and fat of the next batch of feed are added. However, it is obvious that this intermittent discharging method has the disadvantage of low production efficiency. Utility Model Content

[0004] The present application provides a fat adding device for feed production, which is used to solve the problem of low production efficiency caused by intermittent material discharge in the existing fat adding method.

[0005] The present application provides a fat adding device for feed production, comprising a lower feed bin, and a belt scale arranged below the lower feed bin;

[0006] The belt scale is provided with a weighing sensor and a speed sensor;

[0007] A material storage bin is provided below the transport terminal of the belt scale; the material storage bin is connected to the oil injection bin;

[0008] The oil spraying bin is connected to the feed storage bin;

[0009] The oil spray tank is also connected to the oil storage device through the valve group and the liquid transfer pump in sequence; a flow meter is also arranged between the valve group and the liquid transfer pump;

[0010] The weighing sensor, speed sensor, valve group, flow meter and liquid transfer pump are all electrically connected to the controller.

[0011] Optionally, an opening is provided at the top of the oil spraying bin for passing feed; the oil spraying bin comprises a plurality of atomizing nozzles staggered from top to bottom in a vertical direction, and the spraying direction of the atomizing nozzles is horizontally toward the unloading position of the oil spraying bin;

[0012] The valve group comprises a plurality of valves arranged in parallel; each valve is connected to the atomizing nozzle in a one-to-one correspondence.

[0013] Optionally, a material turner is provided between adjacent atomizing nozzles;

[0014] The material turner comprises a horizontally arranged material turning cylinder, which is supported by a support shaft passing through the axis of the material turning cylinder, and both ends of the support shaft are fixed to the inner wall of the oil spraying tank.

[0015] Optionally, the turning cylinder is rotatably connected to the support shaft.

[0016] Optionally, the turning cylinder is fixedly connected to the supporting shaft.

[0017] Optionally, a dust cover is provided on the belt scale;

[0018] The dust cover includes a horizontal part and a vertical part; the horizontal part is arranged above the belt scale, and the vertical part is arranged near the output terminal of the belt scale;

[0019] The lower end of the vertical portion is connected to the entire material bin;

[0020] The output end of the lower bin passes through the dust cover and extends into the dust cover.

[0021] Optionally, an opening is provided above one side wall of the vertical portion and is connected to a dust collector and an exhaust fan in sequence.

[0022] Optionally, the oil storage device includes an oil storage tank and an inert gas storage tank connected to the oil storage tank;

[0023] The oil storage tank is connected to the liquid transfer pump;

[0024] The outer wall of the oil storage tank is covered with a heat exchange jacket;

[0025] A buffer air bag is provided in the inert gas storage tank.

[0026] Optionally, a filter is further provided between the oil storage tank and the liquid transfer pump.

[0027] The present application provides a grease adding device for feed production, which continuously transports the feed in the feed bin to the feed terminal by setting a belt scale, and at the same time sets an oil spraying bin below the feed terminal to spray grease on the falling feed. The device of the present application sprays grease on the feed during the continuous falling process of the feed through the cooperation of the above-mentioned equipment, thereby achieving the purpose of adding grease to the feed. It has the characteristics of continuous discharge and high production efficiency, and overcomes the disadvantage of low production efficiency caused by intermittent discharge in the existing grease adding method. In addition, the present application also sets a weighing sensor and a speed sensor on the belt scale, and the weighing sensor, speed sensor, valve group, flow meter and liquid transfer pump are electrically connected to the controller, so that the amount of grease added in the feed can be controlled in real time by the controller, which has the advantages of accuracy, real-time, labor saving and controllability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of a fat adding device for feed production provided in one embodiment of the present application;

[0030] Figure 2 A schematic diagram of a fat adding device for feed production provided by another embodiment of the present application;

[0031] Figure 3 A schematic diagram of the structure of an oil spray bin for feed production provided in one embodiment of the present application;

[0032] Figure 4 A schematic diagram of a fat adding device for feed production provided in another embodiment of the present application;

[0033] Figure 5 A schematic diagram of the structure of an oil storage device for feed production provided in one embodiment of the present application;

[0034] Figure 6 This is a schematic diagram of a fat adding device for feed production provided in yet another embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1. Feed bin; 2. Belt scale; 3. Oil spray bin; 4. Oil storage device; 5. Controller; 6. Dust cover; 7. Filter; 10. Valve group; 21. Weighing sensor; 22. Speed ​​sensor; 23. Feed bin; 24. Feed storage bin; 30. Liquid transfer pump; 31. Atomizing nozzle; 32. Feed turner; 41. Oil storage tank; 42. Inert gas storage tank; 61. Dust collector; 62. Exhaust fan; 100. Valve; 321. Feed turning barrel; 322. Support shaft; 411. Heat exchange jacket; 421. Buffer airbag. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0038] like Figure 1 As shown, the present application provides a fat adding device for feed production, comprising a lower feed bin 1, and a belt scale 2 arranged below the lower feed bin 1;

[0039] The belt scale 2 is provided with a weighing sensor 21 and a speed sensor 22;

[0040] A material storage bin 23 is provided below the transport terminal of the belt scale 2; the material storage bin 23 is connected to the oil injection bin 3;

[0041] The oil spraying bin 3 is connected to the feed storage bin 24;

[0042] The oil spray tank 3 is also connected to the oil storage device 4 through the valve group 10 and the liquid transfer pump 30 in sequence; a flow meter 25 is also provided between the valve group 10 and the liquid transfer pump 30;

[0043] The weighing sensor 21 , the speed sensor 22 , the valve group 10 , the flow meter 25 and the liquid transfer pump 30 are all electrically connected to the controller 5 .

[0044] When in use, the compressed feed is evenly discharged from the bottom of the feed bin 1 (a gate valve or a manual gate can be set in the feed bin 1 to control the feed discharge amount) onto the belt scale 2, and the belt scale 2 is started. The feed falling onto the belt scale 2 is transported to the transportation terminal by the belt on the belt scale 2. At the same time, the weighing sensor 21 detects the feed weight in the weighing area in real time, and the speed sensor 22 detects the linear speed of the belt in real time. The weighing sensor 21 and the speed sensor 22 respectively feed back the measured feed weight data and belt speed data to the controller 5. The controller 5 calculates the feed discharge amount per unit time in real time according to the received data, and calculates the volume (or weight) of the oil required per unit time according to the preset ratio according to the feed discharge amount, and controls the start of the liquid transfer pump 30 and the opening of the valve in the valve group 10 to pass the oil in the oil storage device 4 into the atomizing nozzle 31 of the oil spray bin 3. At the same time, the flow meter 25 monitors the flow of grease in the pipeline in real time, and feeds back the flow data of the grease to the controller 5, so that the controller 5 can control the opening of each valve in the valve group 10, thereby regulating the amount of grease added.

[0045] When the belt on the belt scale 2 conveys the feed to the transport terminal and falls from the terminal, the feed falling from the transport terminal of the belt scale will fall in a diffused state under natural conditions, which is not conducive to uniform spraying of grease on it. The structure of the whole feed bin 23 is a bucket-shaped setting, which can collect the feed falling from the transport terminal to reduce the scattering of the feed when it falls naturally. The falling speed of the feed at the terminal of the whole feed bin 23 is the same as the falling speed of the feed from the transport terminal of the belt scale 2 (the falling speed of the feed in the whole feed bin 23 is related to the opening at the bottom of the whole feed bin 23, and in actual use, a whole feed bin 23 with a matching bottom opening can be set), that is, the whole feed bin 23 cannot affect the falling rate of the feed, thereby avoiding the problem of inaccurate grease addition caused by changing the feeding rate after the material passes through the whole feed bin 23.

[0046] The collected feed falls from the whole-material bin 23 into the oil spray bin 3, and the feed is sprayed with atomized grease, and the grease is evenly sprayed on the surface of the feed. The feed particles sprayed with grease are completed in the oil spray bin 3 and output from the oil spray bin 3 to be stored in the feed storage bin 24.

[0047] The present application provides a grease adding device for feed production, which continuously transports the feed in the feeding bin to the feeding terminal by setting a belt scale 2, and at the same time sets an oil spraying bin 3 below the feeding terminal to spray grease on the falling feed. The device of the present application sprays grease on the feed during the continuous falling process of the feed through the cooperation of the above-mentioned equipment, so as to achieve the purpose of adding grease to the feed, and has the characteristics of continuous discharge and high production efficiency, and overcomes the disadvantage of low production efficiency caused by intermittent discharge in the existing grease adding method. In addition, the present application also sets a weighing sensor 21 and a speed sensor 22 on the belt scale 2, and the weighing sensor 21, the speed sensor 22, the valve group 10, the flow meter 25 and the liquid transfer pump 30 are all electrically connected to the controller 5, and the amount of grease added in the feed can be controlled in real time by the controller 5, which has the advantages of accuracy, real-time, labor-saving and controllable.

[0048] like Figure 2 As shown, optionally, an opening is provided at the top of the oil spraying bin 3 for passing feed; the oil spraying bin 3 comprises a plurality of atomizing nozzles 31 staggered from top to bottom along the vertical direction, and the spray direction of the atomizing nozzles 31 is horizontally toward the unloading position of the oil spraying bin 3;

[0049] The valve group 10 includes a plurality of valves 100 arranged in parallel; each valve 100 is connected to the atomizing nozzle 31 in a one-to-one correspondence.

[0050] In the present application, the staggered arrangement of the atomizing nozzles 31 can spray the grease on the surface of the feed more evenly. The use of multiple atomizing nozzles 31 can improve the spraying efficiency. The amount of oil sprayed is controlled by the controller 5. When the amount of grease output from the oil storage device 4 is constant, excessive grease spraying will not occur. A flow meter can also be set on the pipeline between the valve 100 and the atomizing nozzle 31, and the flow meter is electrically connected to the controller 5 to achieve the purpose of more precise control of the grease flow.

[0051] like Figure 3 As shown, optionally, a material turner 32 is provided between adjacent atomizing nozzles 31;

[0052] The material turner 32 includes a horizontally arranged material turning cylinder 321 , which is supported by a support shaft 322 passing through the axis of the material turning cylinder 321 , and both ends of the support shaft 322 are fixed to the inner wall of the oil spraying tank 3 .

[0053] In the present application, when in use, the feed turner 32 is provided to mix the falling feed, and the coordinated use of the feed turner 32 and the atomizing nozzle 31 can better mix the feed.

[0054] Optionally, the turning cylinder 321 is rotatably connected to the support shaft 322 .

[0055] In the present application, when the turning drum 321 is rotatably connected to the support shaft 322, the turning drum 321 can rotate under the impact of the falling feed, and the turning drum 321 stirs the falling feed during the rotation process, thereby achieving stirring and mixing of the feed (mixing feed sprayed with grease and feed not sprayed with grease).

[0056] Optionally, the turning cylinder 321 is fixedly connected to the support shaft 322 .

[0057] In the present application, the turning barrel 321 is fixedly connected to the support shaft 322, and the turning barrel 321 does not rotate when the feed falls, so that the feed can fall from both sides of the turning barrel 321 and then be mixed during the falling process. In this way, the cross-sectional shape of the turning barrel 321 is diamond or shuttle-shaped, and its sharp end is vertically arranged.

[0058] like Figure 4 As shown, optionally, a dust cover 6 is provided on the belt scale 2;

[0059] The dust cover 6 includes a horizontal portion and a vertical portion; the horizontal portion is disposed above the belt scale 2, and the vertical portion is disposed near the output terminal of the belt scale 2; the lower end of the vertical portion is connected to the whole material bin 23;

[0060] The output end of the lower bin 1 passes through the dust cover 6 and extends into the dust cover 6 .

[0061] When the belt on the belt scale 2 conveys the feed to the transport terminal and falls from the terminal, due to the low moisture content of the feed particles (reducing the moisture content of the feed particles can allow the feed particles to fully absorb the sprayed oil), the feed will stir up some dust during the falling process. If not handled, the dust will escape into the environment and cause environmental pollution. Therefore, a dust cover 6 is provided to prevent dust pollution caused by the belt scale 2 in the process of transporting feed.

[0062] like Figure 4 As shown, optionally, an opening is provided above one side wall of the vertical portion, and is connected to the dust collector 61 and the exhaust fan 62 in sequence.

[0063] Since more dust will be stirred up when the feed falls from the transport terminal of the belt scale 2, an opening is opened in the vertical part of the dust cover 6, and the dust is sucked away by the negative pressure formed by the exhaust fan 62. The sucked dust-containing gas enters the dust collector 61 for dust removal and then discharged. The dust collector 61 can also collect the feed dust for reuse to reduce waste.

[0064] like Figure 5 As shown, optionally, the oil storage device 4 includes an oil storage tank 41 and an inert gas storage tank 42 connected to the oil storage tank 41;

[0065] The oil storage tank 41 is connected to the liquid transfer pump 30; the outer wall of the oil storage tank 41 is covered with a heat exchange jacket 411;

[0066] A buffer air bag 421 is arranged in the inert gas storage tank 42 .

[0067] In the present application, since some oils and fats have a high melting point, they will solidify when stored in the oil storage tank 41 in some cold seasons. Therefore, it is necessary to introduce a heat exchange medium into the heat exchange jacket 411 to heat and melt them before use; and if the oil and fat are not protected during use, they are very easy to be oxidized and rancid. Therefore, an inert gas storage tank 42 connected to the oil storage tank 41 is provided, so that the space above the oil storage tank 41 is filled with an inert gas (such as nitrogen, argon, etc.) to delay the oxidation and rancidity of the oil and fat. When in use, the inert gas can be first introduced into the oil tank 41 through the inert gas storage tank 42 to replace the inert gas atmosphere in the oil tank 41, and then grease can be added to the oil tank 41 to a suitable liquid level. During the process of adding grease, the inert gas in the oil tank 41 will be compressed into the inert gas storage tank 42. The air bag in the inert gas storage tank 42 can store the potential energy of the compressed inert gas. When the oil level in the oil tank 41 drops, the inert gas in the inert gas storage tank 42 can be pressed into the oil tank 41, thereby ensuring that the oil surface in the oil tank 41 is always filled with inert gas.

[0068] like Figure 6 As shown, optionally, a filter 7 is further provided between the oil storage tank 41 and the liquid transfer pump 30 .

[0069] In the present application, the filter 7 is provided to filter out impurities in the grease, so that the grease input into the atomizing nozzle 31 is cleaner, thereby preventing the impurities in the grease from clogging the atomizing nozzle 31 .

[0070] A grease adding device for feed production, the use process of which is as follows:

[0071] When in use, the compressed feed is uniformly discharged from the bottom of the feeding bin 1 (a gate valve or a manual gate can be set in the feeding bin 1 to control the feeding amount) onto the belt scale 2, the belt scale 2 is started, and the feed falling onto the belt scale 2 is transported to the transport terminal by the belt on the belt scale 2. At the same time, the weighing sensor 21 detects the weight of the feed in the weighing area in real time, and the speed sensor 22 detects the linear speed of the belt in real time. The weighing sensor 21 and the speed sensor 22 respectively feed back the measured feed weight data and belt speed data to the controller 5. The controller 5 calculates the feeding amount per unit time in real time according to the received data, and calculates the volume (or weight) of the oil required per unit time according to the feeding amount of the feed according to the preset ratio, and controls the liquid transfer pump 30 to start and the valve 100 to open, so that the oil is passed into the atomizing nozzle 31 of the oil spray bin 3. At the same time, the flow meter monitors the flow of the oil in the pipeline in real time, and feeds back the flow data of the oil to the controller 5, so that the controller 5 can control the opening of the valve 100, thereby regulating the amount of oil added.

[0072] When the belt on the belt scale 2 conveys the feed to the transportation terminal and falls from the terminal, due to the low moisture content of the feed particles (reducing the moisture content of the feed particles can allow the feed particles to fully absorb the sprayed oil), the feed will stir up some dust during the falling process. If not handled, these dusts will escape into the environment and cause environmental pollution. Therefore, a dust cover 6 is provided to prevent dust pollution caused by the process of transporting feed by the belt scale 2. Moreover, since more dust will be stirred when the feed falls from the transportation terminal of the belt scale 2, an opening is opened in the vertical part of the dust cover 6, and the negative pressure formed by the exhaust fan 62 is used to suck away the dust. The sucked dust-containing gas enters the dust collector 61 for dust removal and then is discharged. The dust collector 61 can also collect feed dust for reuse to reduce waste.

[0073] Since the feed dropped from the transport terminal of the belt scale 2 will fall in a diffused state under natural conditions, this is not conducive to uniform spraying of grease on it, and the structure of the whole material bin 23 is set in a bucket shape, which can collect the feed dropped from the transport terminal to reduce the scattering of the feed when it falls naturally. The falling speed of the feed at the terminal of the whole material bin 23 is the same as the falling speed of the feed from the transport terminal of the belt scale 2, that is, the whole material bin 23 cannot affect the falling rate of the feed, thereby avoiding the problem of inaccurate grease addition caused by changing the feeding rate after the material passes through the whole material bin 23.

[0074] The collected feed falls from the feeding bin 23 into the oil spraying bin 3, and the atomizing nozzles 31 in the oil spraying bin 3 spray atomized grease into the feed from both sides of the feeding belt formed when the feed falls. When the feed sprayed with grease hits the turning barrel 321 during the falling process, it will roll over and splash due to the impact with the turning barrel 321, so that the falling feed is mixed once during the falling process (the feed sprayed with grease and the feed not sprayed with grease are mixed). When the mixed feed falls again, it will be sprayed with grease again by the atomizing nozzles 31 in the lower layer, so as to achieve uniform spraying of grease on the feed.

[0075] The feed particles sprayed with oil are finished in the oil spraying bin 3 , and are output from the oil spraying bin 3 and stored in the feed storage bin 24 .

[0076] Since some oils and fats have high melting points, they will solidify when stored in the oil storage tank 41 in some cold seasons. Therefore, it is necessary to introduce a heat exchange medium into the heat exchange jacket 411 to heat and melt them before use. Moreover, if the oil and fat are not protected during use, they are easily oxidized and rancid. Therefore, an inert gas storage tank 42 connected to the oil storage tank 41 is provided so that the space above the oil storage tank 41 is filled with an inert gas (such as nitrogen, argon, etc.) to delay the oxidation and rancidity of the oil and fat. When in use, the inert gas can be first introduced into the oil tank 41 through the inert gas storage tank 42 to replace the inert gas atmosphere in the oil tank 41, and then grease can be added to the oil tank 41 to a suitable liquid level. During the process of adding grease, the inert gas in the oil tank 41 will be compressed into the inert gas storage tank 42. The air bag in the inert gas storage tank 42 can store the potential energy of the compressed inert gas. When the oil level in the oil tank 41 drops, the inert gas in the inert gas storage tank 42 can be pressed into the oil tank 41, thereby ensuring that the oil surface in the oil tank 41 is always filled with inert gas.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fat adding device for feed production, characterized in that: It comprises a material lowering bin (1), and a belt scale (2) arranged below the material lowering bin (1); The belt scale (2) is provided with a weighing sensor (21) and a speed sensor (22); A material storage bin (23) is provided below the transport terminal of the belt scale (2); the material storage bin (23) is connected to the oil spray bin (3); The oil spraying bin (3) is connected to the feed storage bin (24); The oil spraying tank (3) is also connected to the oil storage device (4) through the valve group (10) and the liquid transfer pump (30) in sequence; a flow meter (25) is also provided between the valve group (10) and the liquid transfer pump (30); The weighing sensor (21), the speed sensor (22), the valve group (10), the flow meter (25) and the liquid transfer pump (30) are all electrically connected to the controller (5).

2. The oil and fat adding device for feed production according to claim 1, characterized in that: The top of the oil spraying bin (3) is provided with an opening for passing feed; the oil spraying bin (3) comprises a plurality of atomizing nozzles (31) arranged in a staggered manner from top to bottom along a vertical direction, and the spraying direction of the atomizing nozzles (31) is horizontally directed toward the unloading position of the oil spraying bin (3); The valve group (10) comprises a plurality of valves (100) arranged in parallel; each valve (100) is connected to the atomizing nozzle (31) in a one-to-one correspondence.

3. The oil and fat adding device for feed production according to claim 2, characterized in that: A material turner (32) is provided between adjacent atomizing nozzles (31); The material turner (32) comprises a horizontally arranged material turning cylinder (321), wherein the material turning cylinder (321) is supported by a support shaft (322) passing through the axis of the material turning cylinder (321), and both ends of the support shaft (322) are fixed to the inner wall of the oil spraying tank (3).

4. The oil and fat adding device for feed production according to claim 3, characterized in that: The material turning cylinder (321) is rotatably connected to the support shaft (322).

5. The oil and fat adding device for feed production according to claim 3, characterized in that: The material turning cylinder (321) is fixedly connected to the support shaft (322).

6. The oil and fat adding device for feed production according to claim 1, characterized in that: The upper cover of the belt scale (2) is provided with a dust cover (6); The dust cover (6) comprises a horizontal portion and a vertical portion; the horizontal portion is arranged above the belt scale (2), and the vertical portion is arranged at a position close to the output terminal of the belt scale (2); The lower end of the vertical portion is connected to the bulk bin (23); The output end of the lower material bin (1) passes through the dust cover (6) and extends into the dust cover (6).

7. The oil and fat adding device for feed production according to claim 6, characterized in that: An opening is provided above one side wall of the vertical portion and is connected to the dust collector (61) and the exhaust fan (62) in sequence.

8. The oil and fat adding device for feed production according to any one of claims 1 to 7, characterized in that: The oil storage device (4) comprises an oil storage tank (41) and an inert gas storage tank (42) connected to the oil storage tank (41); The oil storage tank (41) is connected to the liquid transfer pump (30); The outer wall of the oil storage tank (41) is coated with a heat exchange jacket (411); A buffer air bag (421) is arranged in the inert gas storage tank (42).

9. The oil and fat adding device for feed production according to claim 8, characterized in that: A filter (7) is also provided between the oil storage tank (41) and the liquid transfer pump (30).

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