Pig feed production processing fermentation device and method

Abstract

The present application belongs to the technical field of biological fermentation equipment, and particularly relates to a pig feed production and processing fermentation device and method, which comprises a base, the upper surface of the base is fixedly connected with a fixing ring, the inner wall of the fixing ring is fixedly connected with two first sealing bearings, the inner wall of the inner ring of the two first sealing bearings is fixedly connected with a fermentation tank, and the opening of the fermentation tank is sealedly connected with a sealing mechanism through bolts. The pig feed production and processing fermentation device has the function of quickly forming an anaerobic environment in the fermentation tank, improves the content of anaerobic microorganisms in the initial stage of fermentation processing by retaining pig feed fermentation substrates, shortens the lag phase of anaerobic microorganism proliferation, improves the efficiency of pig feed fermentation processing, has the function of preventing blockage during automatic discharge of pig feed, improves the reliability of device use, and reduces the labor intensity of workers.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of biological fermentation equipment, and particularly relates to a pig feed production and processing fermentation device and method. BACKGROUND

[0002] In the current pig breeding industry, finished pig feed has become the main source of pig feed due to its balanced nutritional composition, convenient storage and transportation and other advantages. However, in the production process of finished pig feed, part of the nutritional components (such as vitamins and enzymes) are destroyed due to high-temperature granulation and long-time storage, and the cost is relatively high, which is difficult to meet the diversified nutritional needs of pigs in different growth stages. In addition, the addition of preservatives and antibiotics in finished pig feed not only increases the metabolic burden of pigs, but also may cause drug residues, affecting the quality of pork and food safety. Therefore, on the basis of feeding finished pig feed, the pig feed fermented from crops becomes an important supplement to improve breeding efficiency and pork quality. The pig feed fermented from crops is made by using fresh crops (such as corn stalks, sweet potato vines and ensiled corn) through microbial fermentation process. For example, a pig feed fermentation device is disclosed in the patent with the authorized announcement number CN117801929B.

[0003] When the current pig feed fermentation device is used, it takes a long time for crops to be fermented into pig feed in the fermentation tank. This is because the fermentation tank needs to rely on the natural oxygen consumption of microorganisms to build an anaerobic environment after being sealed. This process usually takes several hours or even longer, which greatly delays the metabolic start of anaerobic microorganisms. At the same time, anaerobic microorganisms need to go through the process from adapting to the environment to massive proliferation in the initial stage, and their slow growth cycle further prolongs the overall fermentation time, which seriously affects the efficiency of processing pig feed based on crop fermentation.

[0004] In addition, when the existing pig feed fermentation device discharges the fermented pig feed, the proportion of solid matter in the fermented pig feed is relatively high, and is often accompanied by sticky fermentation products (such as polysaccharide substances). In the discharging process, the fermented pig feed is prone to accumulate and compact at the outlet, thereby causing blockage. Once blockage occurs, it needs to be promptly unblocked by the staff, which not only affects the reliability of the pig feed production and processing fermentation device, but also increases the labor intensity of the staff.

[0005] Therefore, we propose a pig feed production and processing fermentation device and method to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a pig feed production and processing fermentation device and method to solve the above problems.

[0007] In order to achieve the above purpose, the following technical scheme is adopted in the present application: a pig feed production and processing fermentation device, comprising a base, a fixed ring is fixedly connected to the upper surface of the base, two first sealing bearings are fixedly connected to the inner wall of the fixed ring, a fermentation tank is fixedly connected to the inner wall of the inner ring of the two first sealing bearings, and a sealing mechanism is sealingly connected to the opening of the fermentation tank through bolts;

[0008] A plurality of through holes are formed in the outer wall of the inner side of the fixed ring, and ceramic air permeable blocks are fixedly connected to the hole walls of the through holes, and a waterproof and air permeable film sleeve is fixedly connected to the outer walls of the fermentation tank and the plurality of ceramic air permeable blocks;

[0009] A discharge mechanism is fixedly connected to the side wall of the fermentation tank;

[0010] A drive motor is fixedly connected to the bottom end of the base, the output end of the drive motor penetrates the base, and an auxiliary mechanism is fixedly connected to the output end of the drive motor;

[0011] A positioning mechanism is fixedly connected to the top end outer wall of the fixed ring.

[0012] In the pig feed production and processing fermentation device, the sealing mechanism comprises a first end cover sealingly connected to the opening end of the fermentation tank, a second end cover threadedly sealingly connected to the side end of the first end cover, an air inlet groove formed in the inner wall of the second end cover, a plurality of air inlet one-way valves fixedly connected to the groove wall of the air inlet groove, an air permeable plate fixedly connected to the groove wall of the air inlet groove, a carbon dioxide air permeable film fixedly connected to the outer wall of the air permeable plate, and a rotating handle fixedly connected to the outer wall of the second end cover.

[0013] In the pig feed production and processing fermentation device, the discharge mechanism comprises a bevel gear ring and a second sealing bearing fixedly connected to the side wall of the fermentation tank, an outer cylinder fixedly connected to the inner wall of the inner ring of the second sealing bearing, a moving through hole formed in the side wall of the fermentation tank, an inner cylinder sealingly and slidingly connected to the hole wall of the moving through hole, and a pushing plate fixedly connected to the side end of the inner cylinder.

[0014] In the pig feed production and processing fermentation device, a circular hole is formed in the side wall of the inner cylinder, a guide rod is sealingly and movably connected to the hole wall of the circular hole, one end of the guide rod is fixedly connected to the inner wall of the outer cylinder, and the other end of the guide rod is movably in contact with the side wall of the pushing plate.

[0015] In the pig feed production and processing fermentation device, the auxiliary mechanism includes a rotating rod fixedly connected with the output end of the driving motor, a bevel gear engaged with the bevel ring is fixedly installed at the top end of the rotating rod through an overload protection coupling, a wind guide volute is fixedly sleeved on the rod wall of the rotating rod, an air suction impeller matched with the wind guide volute is fixedly sleeved on the rod wall of the rotating rod, the bottom end of the wind guide volute is fixedly connected with the upper surface of the base, an annular groove for air inlet of the air inlet end of the wind guide volute is formed in the upper surface of the base, the groove wall of the annular groove is fixedly and communicatively connected with a first air pipe, the air inlet end of the first air pipe penetrates through the lower surface of the base and is fixedly and communicatively connected with a first control valve, the air outlet end of the wind guide volute is fixedly and communicatively connected with a third air pipe, the air outlet end of the third air pipe is fixedly and communicatively connected with a gas outlet three-way reversing electromagnetic valve, the top port of the gas outlet three-way reversing electromagnetic valve is fixedly and communicatively connected with an outer cylinder, the outer wall of the outer cylinder is fixedly and communicatively connected with a second control valve, the air outlet end of the second control valve is fixedly and communicatively connected with a fourth air pipe, and the bottom end of the fourth air pipe is fixedly and communicatively connected with a groove wall.

[0016] In the pig feed production and processing fermentation device, the pipe wall of the first air pipe is fixedly and communicatively connected with a second air pipe, the air inlet end of the second air pipe is fixedly and communicatively connected with an exhaust three-way reversing electromagnetic valve, and the top air inlet end of the exhaust three-way reversing electromagnetic valve penetrates through the inner walls of the base and the fixed ring.

[0017] In the pig feed production and processing fermentation device, the outer wall of the fixed ring is fixedly and communicatively connected with a PLC controller, the outer wall of the fixed ring is fixedly embedded with an electric push rod, the bottom end of the electric push rod is fixedly connected with a rubber block, and an arc-shaped groove is formed in the bottom end of the rubber block.

[0018] A fermentation method of a pig feed production and processing fermentation device, the method comprising the following steps:

[0019] In step S1, during the pig feed fermentation production process, first, open the second end cover, and feed the raw materials for pig feed fermentation processing into the fermentation tank, then close the second end cover, and then use the auxiliary mechanism, the discharging mechanism and the driving motor to suck the oxygen-containing air in the fermentation tank, while the negative pressure environment in the fermentation tank balances the gas pressure by sucking the gas through the carbon dioxide gas permeable membrane and the air inlet one-way valve, and the carbon dioxide gas permeable membrane can preferentially allow carbon dioxide to enter, thereby diluting the oxygen content in the fermentation tank, so that an anaerobic environment is quickly realized in the fermentation tank.

[0020] In step S1, the oxygen content in the fermentation tank is reduced, and the rotation of the fermentation tank is also controlled, which can avoid the compaction of the internal raw materials and facilitate the fermentation processing, and improve the fermentation processing speed of microorganisms and raw materials.

[0021] Step S3, when the fermentation tank is fermented, first open the second end cover, and through the PLC controller control auxiliary mechanism, positioning mechanism and discharge mechanism work, the positioning mechanism in the electric push rod moves down and pushes the rubber block to extrude the fermentation tank, so that the fermentation tank rotation pause, avoid the rotation of the fermentation tank interference pig feed discharge, secondly the auxiliary mechanism injects air into the outer cylinder, the air pushes the inner cylinder and the pusher plate moves, the pusher plate pushes the fermented pig feed in the fermentation tank to discharge smoothly;

[0022] Step S4, in step S3, due to the size limit of the pusher plate, the pig feed at the bottom of the fermentation tank is not discharged, and is used as the fermentation substrate for the next time;

[0023] Step S5, in step S4, the retention period of the fermentation substrate can be set according to the fermentation process, and after a retention period, the first end cover needs to be opened to clean the fermentation tank.

[0024] Compared with the prior art, the pig feed production and processing fermentation device and method has the advantages that:

[0025] Through the driving motor, sealing mechanism, waterproof breathable membrane sleeve and fermentation tank, when the pig feed is fermented during production, first open the second end cover, and send the raw materials for pig feed fermentation processing into the fermentation tank, then close the second end cover, at this time the PLC controller controls the driving motor and the exhaust tee joint reversing electromagnetic valve to work, after the exhaust tee joint reversing electromagnetic valve is electrified, the outlet position changes, so that the exhaust tee joint reversing electromagnetic valve can communicate with the inside of the fixed ring, then the driving motor, waterproof breathable membrane sleeve and auxiliary mechanism suck the oxygen-containing air in the fermentation tank, and the fermentation tank is in a negative pressure environment, then the fermentation tank carbon dioxide breathable membrane sucks the carbon dioxide-rich air to balance the air pressure in the fermentation tank, dilutes the oxygen content of the air in the fermentation tank by carbon dioxide, so that the fermentation tank realizes the anaerobic environment quickly, promotes the proliferation of anaerobic microorganisms, and improves the efficiency of raw material fermentation processing.

[0026] Through the setting of the second end cover, driving motor, auxiliary mechanism and discharge mechanism, when the fermentation tank is fermented, first open the second end cover, and through the PLC controller control driving motor and auxiliary mechanism inject air into the outer cylinder, the increase of air in the outer cylinder will push the inner cylinder to move towards the fermentation tank, at the same time the inner cylinder pushes the pusher plate to move, the pusher plate pushes the fermented pig feed in the fermentation tank to discharge, due to the pushing force of the pusher plate, the first end cover can avoid the blockage of pig feed discharge, and there is no need for staff to dredge, which saves time and effort, the mechanism not only has the function of automatic discharge of pig feed, but also has the function of anti-blocking of pig feed discharge, improves the reliability of the device, and reduces the labor intensity of the staff.

[0027] By setting the auxiliary mechanism, fermentation tank and pushing plate, due to the size limitation of the pushing plate, the pig feed located at the bottom of the fermentation tank is not discharged and serves as the fermentation substrate for the next raw material fermentation, because the fermentation substrate has a large number of anaerobic microorganisms inside, which can effectively reduce the proliferation time of anaerobic microorganisms required during initial fermentation of raw materials, reduce the lag phase of anaerobic microorganism proliferation, in addition, the retention period of this fermentation substrate can be set according to the fermentation process, after a retention period, the first end cover needs to be opened for full cleaning of the fermentation tank, to avoid the fermentation substrate from being retained for multiple times due to deterioration of the fermentation environment, thereby affecting the efficiency of pig feed fermentation processing, when the pig feed in the fermentation tank is discharged and new raw materials are added, the PLC controller controls the driving motor and the auxiliary mechanism to suck the air in the outer cylinder, so that a negative pressure environment is formed in the outer cylinder, and the negative pressure suction force makes the inner cylinder retract, the retraction process can expose the space in the fermentation tank, so that the raw materials in the fermentation tank can be conveniently stored, the mechanism makes the device improve the content of anaerobic microorganisms in the initial stage of fermentation processing by retaining pig feed fermentation substrate, shorten the lag phase of anaerobic microorganism proliferation, and further improve the efficiency of pig feed fermentation processing. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of a pig feed production and processing fermentation device and method provided by the application;

[0029] Figure 2 is Figure 1 a sectional view structural schematic diagram;

[0030] Figure 3 is Figure 2 a structural schematic diagram of the auxiliary mechanism in

[0031] Figure 4 is Figure 2 a structural schematic diagram of the sealing mechanism in

[0032] Figure 5 is Figure 2 a structural schematic diagram of the positioning mechanism in

[0033] Figure 6 is Figure 2 a structural schematic diagram of the carbon dioxide gas permeable membrane part in

[0034] In the figure: 1 base, 2 fixed ring, 3 first sealing bearing, 4 fermentation tank, 5 sealing mechanism, 51 first end cover, 52 second end cover, 53 air inlet groove, 54 air inlet check valve, 55 air permeable plate, 56 carbon dioxide air permeable film, 57 rotating handle, 6 ceramic air permeable block, 7 discharge mechanism, 71 bevel gear ring, 72 second sealing bearing, 73 outer cylinder, 74 inner cylinder, 75 pushing plate, 8 auxiliary mechanism, 81 rotating rod, 82 bevel gear, 83 air guide volute, 84 air suction impeller, 85 annular groove, 86 first air pipe, 87 first control valve, 88 third air pipe, 89 air outlet tee reversing solenoid valve, 810 second control valve, 811 fourth air pipe, 9 positioning mechanism, 91 PLC controller, 92 electric push rod, 93 rubber block, 94 arc-shaped groove, 10 waterproof air permeable film sleeve, 11 driving motor, 12 guide rod, 13 second air pipe, 14 air outlet tee reversing solenoid valve. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0036] As Figures 1-6 shown, a pig feed production and processing fermentation device, including base 1, the upper surface of base 1 is fixedly connected with fixed ring 2, the inner wall of fixed ring 2 is fixedly connected with two first sealing bearings 3, the inner wall of the inner ring of two first sealing bearings 3 is fixedly connected with fermentation tank 4, the opening of fermentation tank 4 is sealingly connected with sealing mechanism 5 through bolts, sealing mechanism 5 includes first end cover 51 sealingly connected with the opening end of fermentation tank 4, the side end of first end cover 51 is threadedly sealingly connected with second end cover 52, the inner wall of second end cover 52 is provided with air inlet groove 53, the groove wall of air inlet groove 53 is fixedly connected with a plurality of air inlet check valves 54, the outer wall of air permeable plate 55 is fixedly connected with carbon dioxide air permeable film 56, the outer wall of second end cover 52 is fixedly connected with rotating handle 57.

[0037] The outer wall of the fermentation tank 4 inside the fixed ring 2 is provided with a plurality of through holes, and the hole wall of the through hole is fixedly connected with a ceramic breathable block 6, the outer wall of the fermentation tank 4 and the plurality of ceramic breathable blocks 6 are fixedly sleeved with a waterproof breathable film sleeve 10, the ceramic breathable block 6 can be breathable, and the waterproof breathable film sleeve 10 is prevented from being damaged by the pig feed, the protection of the waterproof breathable film sleeve 10 is improved, the side wall of the fermentation tank 4 is fixedly connected with a discharging mechanism 7, the discharging mechanism 7 includes a helical gear ring 71 and a second sealing bearing 72 fixedly connected with the side wall of the fermentation tank 4, the inner wall of the inner ring of the second sealing bearing 72 is fixedly connected with an outer cylinder 73, the side wall of the fermentation tank 4 is provided with a moving through hole, and the hole wall of the moving through hole is sealingly and slidably connected with an inner cylinder 74, the side end of the inner cylinder 74 is fixedly connected with a pushing plate 75, the side wall of the inner cylinder 74 is provided with a circular hole, and the hole wall of the circular hole is sealingly and movably connected with a guide rod 12, one end of the guide rod 12 is fixedly connected with the inner wall of the outer cylinder 73, and the other end of the guide rod 12 is movably connected with the side wall of the pushing plate 75, the device improves the content of anaerobic microorganisms in the initial stage of fermentation processing by retaining pig feed fermentation substrate, shortens the lag phase of anaerobic microorganism proliferation, and improves the efficiency of pig feed fermentation processing.

[0038] The bottom end of the base 1 is fixedly connected with a driving motor 11, the output end of the driving motor 11 penetrates the base 1 and is fixedly connected with an auxiliary mechanism 8, the auxiliary mechanism 8 includes a rotating rod 81 fixedly connected with the output end of the driving motor 11, the top end of the rotating rod 81 is fixedly installed with a helical gear 82 engaged with the helical gear ring 71 through an overload protection coupling, the rod wall of the rotating rod 81 is fixedly sleeved with an air guide volute 83, the rod wall of the rotating rod 81 is fixedly sleeved with an air suction impeller 84 matched with the air guide volute 83, the bottom end of the air guide volute 83 is fixedly connected with the upper surface of the base 1, the upper surface of the base 1 is provided with an annular groove 85 for air inlet of the air inlet end of the air guide volute 83, and the groove wall of the annular groove 85 is fixedly connected with a first air pipe 86, the air inlet end of the first air pipe 86 penetrates the lower surface of the base 1 and is fixedly connected with a first control valve 87, the air outlet end of the air guide volute 83 is fixedly connected with a third air pipe 88, the air outlet end of the third air pipe 88 is fixedly connected with an air outlet three-way reversing electromagnetic valve 89, the top port of the air outlet three-way reversing electromagnetic valve 89 is fixedly connected with the outer cylinder 73, the outer wall of the outer cylinder 73 is fixedly connected with a second control valve 810, the air outlet end of the second control valve 810 is fixedly connected with a fourth air pipe 811, the bottom end of the fourth air pipe 811 is fixedly connected with the groove wall of the annular groove 85, the pipe wall of the first air pipe 86 is fixedly connected with a second air pipe 13, the air inlet end of the second air pipe 13 is fixedly connected with an air exhaust three-way reversing electromagnetic valve 14, the top air inlet end of the air exhaust three-way reversing electromagnetic valve 14 penetrates the inner wall of the base 1 and the fixed ring 2, the device not only has the function of quickly forming an oxygen-free environment in the fermentation tank 4, improving the efficiency of pig feed fermentation processing, but also has the function of preventing blockage during automatic discharge of pig feed, improving the reliability of the device, and reducing the labor intensity of the workers.

[0039] A positioning mechanism 9 is fixedly connected to the top outer wall of the fixed ring 2. The positioning mechanism 9 includes a PLC controller 91 fixedly connected to the outer wall of the fixed ring 2. An electric push rod 92 is fixedly embedded in the outer wall of the fixed ring 2. A rubber block 93 is fixedly connected to the bottom end of the electric push rod 92. An arc groove 94 is opened at the bottom end of the rubber block 93. This mechanism can improve the reliability of the device automatically discharging pig feed.

[0040] The first control valve 87, the exhaust three-way reversing solenoid valve 89, the second control valve 810, the electric push rod 92, the drive motor 11, and the exhaust three-way reversing solenoid valve 14 are all electrically connected to the output terminal of the PLC controller 91 via wires. The input terminal of the PLC controller 91 can also be connected to an external control panel for convenient device operation. The above-mentioned power-connected components and electrical connections are all existing technologies and will not be described in detail here.

[0041] The operation principle of the application is described as follows: during the fermentation production of pig feed, first, the second end cover 52 is opened, and the raw materials (such as corn stalks, sweet potato vines and ensiled corn) for the fermentation processing of pig feed are fed into the fermentation tank 4, then the second end cover 52 is closed, at this time the PLC controller 91 controls the driving motor 11 and the exhaust three-way reversing solenoid valve 14 to work, and the energization time of the exhaust three-way reversing solenoid valve 14 can be set to 3 minutes. After the exhaust three-way reversing solenoid valve 14 is energized, the outlet position changes, so that the exhaust three-way reversing solenoid valve 14 can communicate with the inside of the fixed ring 2. The driving motor 11 drives the rotating rod 81 to rotate, which not only drives the bevel gear 82 to rotate, but also drives the air suction impeller 84 to rotate. The bevel gear 82 drives the fermentation tank 4 to rotate slowly in the two first sealing bearings 3 through the bevel gear ring 71. The rotation of the fermentation tank 4 can avoid the compaction of the internal raw materials and facilitate the fermentation processing, and improve the fermentation processing speed of microorganisms and raw materials. After the air suction impeller 84 rotates, the air in the annular groove 85 is sucked through the air guide volute 83, and the sucked air is discharged through the third air pipe 88 and the horizontal port of the exhaust three-way reversing solenoid valve 89, so that the annular groove 85 forms a negative pressure environment. The annular groove 85 in the negative pressure environment sucks the air in the fixed ring 2 through the first air pipe 86, the second air pipe 13 and the exhaust three-way reversing solenoid valve 14. The fixed ring 2 in the negative pressure environment sucks the oxygen-containing air in the fermentation tank 4 through the waterproof air permeable film and the ceramic air permeable block 6, and the fermentation tank 4 is in a negative pressure environment. Then the negative pressure environment in the fermentation tank 4 sucks the carbon dioxide-rich air to balance the air pressure in the fermentation tank 4 through the air inlet one-way valve 54, the air inlet groove 53, the air permeable plate 55 and the carbon dioxide air permeable film 56. The carbon dioxide air permeable film 56 can preferentially make carbon dioxide pass through the air inlet groove 53, dilute the oxygen content of the air in the fermentation tank 4 through carbon dioxide, so that the fermentation tank 4 quickly realizes an anaerobic environment, promotes the proliferation of anaerobic microorganisms, and improves the efficiency of raw material fermentation processing. After 3 minutes, the exhaust three-way reversing solenoid valve 14 is de-energized by the PLC controller 91 to restore the original outlet direction. At this time, the horizontal port of the exhaust three-way reversing solenoid valve 14 can communicate with the waste gas treatment equipment, so that the waste gas generated during the fermentation process of pig feed is discharged into the waste gas treatment equipment through the ceramic air permeable block 6, the waterproof air permeable film sleeve 10 and the exhaust three-way reversing solenoid valve 14, avoiding the pollution of the environment caused by the random discharge of waste gas. The mechanism makes the pig feed production and processing fermentation device have the function of quickly forming an anaerobic environment in the fermentation tank 4, and improves the efficiency of pig feed fermentation processing.

[0042] When the fermentation of pig feed in the fermentation tank 4 is completed, first open the second end cover 52, and control the first control valve 87, the electric push rod 92 and the gas outlet tee reversing solenoid valve 89 to be powered on by the PLC controller 91. After the electric push rod 92 is powered on, the end pushes the rubber block 93 to extrude the rotating fermentation tank 4. The fermentation tank 4 is extruded and temporarily stops rotating, and at this time the bevel gear 82 and the bevel gear ring 71 also stop rotating, but the rotating rod 81 can still rotate normally under the cooperation of the overload protection coupling. After the gas outlet tee reversing solenoid valve 89 is powered on, the position of the gas outlet end is changed, and gas is injected into the outer cylinder 73. At this time, the driving motor 11 sucks external air through the rotating rod 81, the air suction impeller 84, the air guide volute 83, the first air pipe 86 and the first control valve 87. The air is injected into the outer cylinder 73 through the third air pipe 88 and the top port of the gas outlet tee reversing solenoid valve 89. The increase of air in the outer cylinder 73 pushes the inner cylinder 74 to move towards the fermentation tank 4, and the inner cylinder 74 pushes the pusher plate 75 to move. The pusher plate 75 pushes the fermented pig feed in the fermentation tank 4 to be discharged. Due to the pushing force of the pusher plate 75, the pig feed at the first end cover 51 can be prevented from being blocked when it is discharged, and the staff does not need to unblock, saving time and effort. The mechanism not only has the function of automatically discharging pig feed, but also has the function of preventing pig feed from being blocked when it is discharged, improving the reliability of the device, and reducing the labor intensity of the staff.

[0043] Due to the size limitation of the pusher plate 75, the pig feed at the bottom of the fermentation tank 4 is not discharged and serves as the fermentation substrate for the next batch of raw materials (the amount of fermentation substrate can be one fifth of the total amount of pig feed in the fermentation tank 4. This amount of fermentation substrate not only does not excessively affect the processing amount of pig feed fermentation, but also enables the next batch of pig feed fermentation to have sufficient anaerobic microorganisms). Because the fermentation substrate has a large number of anaerobic microorganisms inside, it can effectively reduce the proliferation time of anaerobic microorganisms required during initial fermentation of raw materials, and reduce the lag phase of anaerobic microorganism proliferation. In addition, the retention period of this fermentation substrate can be set according to the fermentation process (such as 10 days). After one retention period is completed, the first end cover 51 needs to be opened to clean the fermentation tank 4 thoroughly to avoid the fermentation environment from deteriorating (such as unqualified pH value and breeding of other harmful bacteria) after the fermentation substrate is retained for multiple times, which interferes with the activity of anaerobic microorganisms and affects the efficiency of pig feed fermentation processing;

[0044] When the pig feed in the fermentation tank 4 is discharged, and new raw materials are added, at this time the PLC controller 91 makes the first control valve 87 and the air outlet three-way reversing solenoid valve 89 are powered off and closed, while controlling the second control valve 810 to open, then the rotating air suction impeller 84 cooperates with the air guide volute 83 to suck the air in the outer cylinder 73 through the annular groove 85, the fourth air pipe 811 and the second control valve 810, at this time the air is discharged through the third air pipe 88 and the transverse port of the air outlet three-way reversing solenoid valve 89, at the same time the outer cylinder 73 is in a negative pressure environment, the inner cylinder 74 is reset under the suction of the negative pressure environment, the reset process can expose the space in the fermentation tank 4, so that the raw materials in the fermentation tank 4 can be conveniently stored, when the raw material supplement is completed and the second end cover 52 is closed, the PLC controller 91 controls the second control valve 810 to be powered off and closed, and the pig feed fermentation processing step is carried out, the mechanism makes the device improve the content of anaerobic microorganisms in the initial stage of fermentation processing by retaining the pig feed fermentation substrate, shortens the lag phase of anaerobic microorganism proliferation, and further improves the efficiency of pig feed fermentation processing.

[0045] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fermentation device for pig feed production and processing, comprising a base (1), characterized in that, A fixing ring (2) is fixedly connected to the upper surface of the base (1). Two first sealing bearings (3) are fixedly connected to the inner wall of the fixing ring (2). A fermentation tank (4) is fixedly connected to the inner wall of the inner ring of the two first sealing bearings (3). A sealing mechanism (5) is sealed at the opening of the fermentation tank (4) by bolts. The fermentation tank (4) has multiple through holes on its outer wall inside the fixing ring (2), and ceramic breathable blocks (6) are fixedly connected to the hole walls. The outer walls of the fermentation tank (4) and the multiple ceramic breathable blocks (6) are together fixedly fitted with a waterproof and breathable membrane sleeve (10). The side wall of the fermentation tank (4) is fixedly connected to a discharge mechanism (7). The bottom end of the base (1) is fixedly connected to a drive motor (11), the output end of the drive motor (11) passes through the base (1) and is fixedly connected to an auxiliary mechanism (8). The top outer wall of the fixed ring (2) is fixedly connected to a positioning mechanism (9); The auxiliary mechanism (8) includes a rotating rod (81) fixedly connected to the output end of the drive motor (11). The top end of the rotating rod (81) is fixedly mounted with a helical gear (82) meshing with a helical ring (71) via an overload protection coupling. A guide volute (83) is fixedly sleeved on the rod wall of the rotating rod (81). An air intake impeller (84) that cooperates with the air guide volute (83) is fixedly sleeved on the rod wall of the rotating rod (81). The bottom end of the air guide volute (83) is fixedly connected to the upper surface of the base (1). An annular groove (85) for air intake at the air intake end of the air guide volute (83) is provided on the upper surface of the base (1). The groove wall of the annular groove (85) is fixedly connected to a first air intake. The first air pipe (86) has its air inlet end passing through the lower surface of the base (1) and is fixedly connected to the first control valve (87). The air outlet end of the air guide volute (83) is fixedly connected to the third air pipe (88). The air outlet end of the third air pipe (88) is fixedly connected to the air outlet three-way reversing solenoid valve (89). The top port of the air outlet three-way reversing solenoid valve (89) is fixedly connected to the outer cylinder (73). The outer wall of the outer cylinder (73) is fixedly connected to the second control valve (810). The air outlet end of the second control valve (810) is fixedly connected to the fourth air pipe (811). The bottom end of the fourth air pipe (811) is fixedly connected to the groove wall of the annular groove (85). The first air pipe (86) is fixedly connected to the second air pipe (13), and the air inlet end of the second air pipe (13) is fixedly connected to the exhaust three-way reversing solenoid valve (14). The top air inlet end of the exhaust three-way reversing solenoid valve (14) passes through the inner wall of the base (1) and the fixing ring (2).

2. The pig feed production and processing fermentation device according to claim 1, characterized in that, The sealing mechanism (5) includes a first end cap (51) that is sealed to the opening end of the fermenter (4). The side end of the first end cap (51) is threadedly sealed to a second end cap (52). An air inlet groove (53) is provided on the inner wall of the second end cap (52). Multiple air inlet one-way valves (54) are fixedly connected to the groove wall of the air inlet groove (53). A permeable plate (55) is fixedly connected to the groove wall of the air inlet groove (53). A carbon dioxide permeable membrane (56) is fixedly connected to the outer wall of the permeable plate (55). A rotating handle (57) is fixedly connected to the outer wall of the second end cap (52).

3. The pig feed production and processing fermentation device according to claim 2, characterized in that, The discharge mechanism (7) includes a helical toothed ring (71) and a second sealed bearing (72) fixedly connected to the side wall of the fermentation tank (4). The inner wall of the inner ring of the second sealed bearing (72) is fixedly connected to an outer cylinder (73). The side wall of the fermentation tank (4) is provided with a movable through hole, and the hole wall of the movable through hole is slidably connected to an inner cylinder (74). The side end of the inner cylinder (74) is fixedly connected to a pusher plate (75).

4. The pig feed production and processing fermentation device according to claim 3, characterized in that, The inner cylinder (74) has a circular hole on its side wall, and a guide rod (12) is movably connected to the hole wall. One end of the guide rod (12) is fixedly connected to the inner wall of the outer cylinder (73), and the other end of the guide rod (12) is in contact with the side wall of the pusher plate (75).

5. The pig feed production and processing fermentation device according to claim 4, characterized in that, The positioning mechanism (9) includes a PLC controller (91) fixedly connected to the outer wall of the fixed ring (2). An electric push rod (92) is fixedly embedded in the outer wall of the fixed ring (2). A rubber block (93) is fixedly connected to the bottom end of the electric push rod (92). An arc groove (94) is opened at the bottom end of the rubber block (93).

6. A fermentation method applied to the fermentation apparatus for pig feed production and processing as described in claim 5, characterized in that, The method includes the following steps: Step S1: During the pig feed fermentation process, the second end cap (52) is opened first, and the raw materials for pig feed fermentation are sent into the fermentation tank (4). Then the second end cap (52) is closed. Afterwards, the auxiliary mechanism (8), the discharge mechanism (7) and the drive motor (11) draw oxygen-containing air into the fermentation tank (4). At the same time, the negative pressure environment inside the fermentation tank (4) is balanced by drawing gas through the carbon dioxide permeable membrane (56) and the one-way valve (54). The carbon dioxide permeable membrane (56) can preferentially allow carbon dioxide to enter, thereby diluting the oxygen content inside the fermentation tank (4) and making the fermentation tank (4) quickly achieve an anaerobic environment. Step S2: In step S1, while reducing the oxygen content in the fermenter (4), the fermenter (4) is also rotated. Rotating the fermenter (4) can prevent the internal raw materials from being compacted and making fermentation and processing inconvenient, thereby increasing the fermentation and processing speed of microorganisms and raw materials. Step S3: After the pig feed in the fermentation tank (4) has finished fermenting, first open the second end cover (52), and control the auxiliary mechanism (8), positioning mechanism (9) and discharge mechanism (7) through the PLC controller (91). The electric push rod (92) in the positioning mechanism (9) moves down to push the rubber block (93) to squeeze the fermentation tank (4), so that the rotation of the fermentation tank (4) stops, and avoids the rotation of the fermentation tank (4) from interfering with the discharge of pig feed. Then, the auxiliary mechanism (8) injects air into the outer cylinder (73), and the air pushes the inner cylinder (74) and the pusher plate (75) to move. The pusher plate (75) pushes the fermented pig feed in the fermentation tank (4) to be discharged smoothly. In step S4 and step S3, due to the size limitation of the pusher plate (75), the pig feed located at the bottom of the fermentation tank (4) was not discharged and was used as the fermentation substrate for the next raw material fermentation. In step S5, the retention period of the fermentation substrate can be set according to the specific fermentation process. After one retention period is completed, the first end cap (51) needs to be opened to thoroughly clean the inside of the fermentation tank (4).

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