Fresh material micro-aerobic dryer

Abstract

The fresh material micro-aerobic drying machine comprises a drying barrel, a feeding device is arranged on the left side of the drying barrel, a lower supporting frame is fixed to the lower portion of the drying barrel, supporting plates are fixed to the top faces of the left end, the middle and the right end of the lower supporting frame, and bearing seats are fixed to the left portions and the right portions of the top faces of the front portions and the rear portions of the supporting plates; rotating shaft parts at the left end and the right end of the transmission roller are fixed on inner rings of bearings of the corresponding bearing seats; the outer side walls of the flange connecting parts at the left part, the middle part and the right part of the drying barrel body are pressed against the top surfaces of the corresponding front and rear transmission rollers; a continuous drying mode is adopted, meanwhile, the micro-aerobic environment is guaranteed during drying, it is guaranteed that oxygen basically does not exist in the drying barrel, and the drying effect is guaranteed.

Description

Technical field:

[0001] The invention relates to the technical field of drying equipment, and more specifically to a fresh material micro-oxygen drying machine. Background technology:

[0002] Existing fresh materials, such as bamboo chips, need to be dried before use, and the existing drying equipment generally uses electric heating to heat the air in the cavity of the drying equipment or a burner directly burns fuel to heat the air to form hot gas and blow it into the cavity of the drying equipment. This gas is mixed with a large amount of oxygen and has a certain humidity. When drying fresh materials such as bamboo chips, the surface of the material will be oxidized, affecting its quality. In addition, due to the moisture in the gas, the drying time is prolonged and the drying efficiency is reduced.

[0003] Moreover, the existing drying equipment generally places the dried material in an oven, and after drying, opens the oven door and dumps it out, which cannot achieve continuous drying operation and has poor operating effect. Summary of the invention:

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a fresh material micro-oxygen drying machine, which adopts a continuous drying method and ensures a micro-oxygen environment during drying, ensuring that there is basically no oxygen in the drying cylinder and ensuring the drying effect.

[0005] The solution of the present invention to solve the technical problem is:

[0006] A fresh material micro-oxygen dryer comprises a drying cylinder, a feeding device is arranged at the left side of the drying cylinder, a lower support frame is arranged below the drying cylinder, support plates are fixed to the top surfaces of the left end, middle part and right end of the lower support frame, bearing seats are fixed to the left and right parts of the top surfaces of the front and rear parts of the support plate, the rotating shaft parts at the left and right ends of the driving roller are fixed to the inner rings of the bearings of the corresponding bearing seats; the outer side walls of the flange connection parts at the left, middle and right parts of the drying cylinder are pressed against the top surfaces of the corresponding front and rear driving rollers;

[0007] A plurality of connection blocks are installed on the outer sides of the left and right parts of the drying cylinder, and the outer annular gear ring is inserted on the drying cylinder, and the outer annular gear ring is fixed on the connection plates fixed on the left and right sides of the connection blocks;

[0008] A fixing plate extending forward and backward is fixed on the top surface of the lower support frame below the outer annular gear ring, and transmission bearing seats are fixed on the left and right parts of the front and rear top surfaces of the fixing plate, and the two ends of the main transmission shaft are fixed on the bearing inner rings of the two corresponding transmission bearing seats on the left and right. A driving gear ring is formed or fixed on the outer side wall of the middle part of the main transmission shaft, and the driving gear ring is meshed with the corresponding outer annular gear ring;

[0009] A reduction motor is fixed on the top surface of the lower support frame on one side of the fixed plate, and one end of the corresponding main transmission shaft extends out of the corresponding transmission bearing seat and is connected to the output shaft of the reduction motor through a coupling;

[0010] The outer end plates are fixed on the end surfaces of the left and right ends of the drying cylinder, a feed through hole is formed in the middle of the outer end plate at the left end, the right part of the feed pipe is in the feed through hole and movably connected to the outer end plate at the left end, and the left end of the feed pipe is connected to the discharge port of the feed device;

[0011] The air inlet pipe and the air return pipe are inserted into the drying cylinder, and the right ends of the air inlet pipe and the air return pipe extend out of the middle through hole of the outer end plate at the right end;

[0012] A plurality of outlet holes are formed on the bottom wall plate of the air inlet pipe, and a plurality of inlet holes are formed on the side wall of the air return pipe;

[0013] The air inlet pipe and the air return pipe are movably connected in the drying cylinder through a plurality of connecting components;

[0014] A drying main unit is fixed to the right rear portion of the drying cylinder, a condensing heat exchanger is arranged on the left side of the drying main unit, an air outlet end of the return air pipe is connected to the return air connecting pipe at the bottom of the condensing heat exchanger, a top connecting pipe of the condensing heat exchanger is connected to one end of a three-way connector, and both ends of the three-way connector are connected to the air inlets of two blowers of the drying main unit;

[0015] The right end of the air inlet pipe is connected to one end of the first three-way connector, and the other two ends of the first three-way connector are connected to two air outlet connectors of the drying host.

[0016] An air storage tank is provided on the left side of the condensing heat exchanger. The top end of the vertical exhaust pipe of the drying main unit is connected to an air inlet on the lower side wall of the air storage tank through a connecting pipe. The air outlet on the upper side wall of the air storage tank is connected to the air inlet of the circulating blower through a connecting pipe. The air outlet of the circulating blower is connected to the bottom feed pipe of the feeding device through a connecting pipe.

[0017] The feeding device comprises a fixed support frame, which is located at the left side of the lower support frame, an upper feeding pipe and an upper reduction conveying motor are fixed on the top surface of the upper plate of the fixed support frame, a bottom feeding pipe and a bottom reduction conveying motor are fixed on the top surface of the lower plate of the fixed support frame, two spiral conveying rods are respectively inserted into the upper feeding pipe and the bottom feeding pipe, the outer side of the spiral teeth of the spiral conveying rod is close to the inner side wall of the upper feeding pipe or the bottom feeding pipe, the left part of the spiral conveying rod is movably connected to the left part of the upper feeding pipe or the bottom feeding pipe through a bearing, the left end of the spiral conveying rod extends out of the left end of the upper feeding pipe or the bottom feeding pipe and is fixedly connected to the output shaft of the corresponding upper reduction conveying motor or the output shaft of the bottom reduction conveying motor through a coupling;

[0018] A feeding funnel is fixed on the middle top surface of the upper feeding pipe and the bottom feeding pipe, and the discharge port of the feeding funnel is communicated with the feeding groove formed on the top plate of the upper feeding pipe or the bottom feeding pipe.

[0019] A vertical feed pipe is fixed in the middle of the top surface of the fixed top plate fixed on the top of the feed hopper below, the bottom end of the vertical feed pipe is connected to the middle through hole of the fixed top plate, the right end of the upper feed pipe extends into the upper part of the vertical feed pipe and is connected to the vertical feed pipe, and the right end of the bottom feed pipe is connected to the left end of the feed pipe;

[0020] The top plate of the vertical feed pipe is connected with a top exhaust pipe;

[0021] The air inlet connected on the middle side wall of the bottom feed pipe is connected to the air outlet of the circulation blower through a connecting pipe.

[0022] The bottom end of the gas storage tank is connected with a liquid discharge pipe, the bottom end of the liquid discharge pipe is connected with a control valve, the top end of the gas storage tank is equipped with a safety valve, and the air inlet of the safety valve is connected with the gas storage tank.

[0023] The drying cylinder body is connected by a plurality of sub-cylinder bodies, and flange rings are welded and fixed on the outer side walls at the left and right ends of each sub-cylinder body, and the two flange rings at the close ends of the two adjacent left and right sub-cylinder bodies are fixedly connected by bolts, and the outer side walls of the two flange rings are on the same annular wall surface and constitute a flange connection part, and the outer end surfaces of the flange rings at the outer ends of the left and right drying cylinder bodies are fixedly connected with outer end plates by bolts, and the outer side walls of the outer end plates and the outer side walls of the corresponding flange rings are on the same annular wall surface and constitute a flange connection part, and the outer side walls of the flange connection part are pressed against the top surfaces of the two corresponding front and rear transmission rollers, and radially extending edges are formed on the outer side walls at the left and right ends of the transmission roller, or radially extending edges are formed on the outer side walls of the annular rings fixed at the left and right ends of the transmission roller, and the lower part of the flange connection part is between the corresponding two radially extending edges.

[0024] A plurality of connection blocks are fixedly connected to a flange ring at one end of the sub-drum body by bolts, and the corresponding plurality of connection blocks are evenly distributed on the outside of the left or right part of the drying drum body with the central axis of the drying drum body as the center;

[0025] The inner wall of the connecting block is an arc-shaped wall surface which is close to the outer wall of the corresponding sub-cylinder body. An extended connecting part is formed on the outer wall of the connecting block. A through hole is formed in the middle of the extended connecting part which passes through the left and right sides. The heat insulating sleeve is in the through hole. The outer wall of the heat insulating sleeve is pressed against or tightly attached to the inner wall of the through hole. A connecting rod is inserted or clamped in the middle through hole of the heat insulating sleeve. The left and right ends of the connecting rod extend out of the two ends of the heat insulating sleeve and are inserted or clamped with heat insulating washers. The heat insulating washers are on the left and right sides of the heat insulating sleeve. A connecting plate is fixedly connected to the left and right walls of the outer annular gear ring by bolts. Two heat insulating washers extend out of the left and right ends of the connection and are installed in the connecting through holes of the corresponding connecting plates.

[0026] A plurality of material separation and discharge grooves are formed on the outer side wall of the right part of the drying cylinder; an insulating shell is provided on the outside of the drying cylinder, the drying cylinder is in the insulating shell, the bottom surface of the insulating shell is fixed on the top surface of the lower support frame, the bottom surface of the right part of the insulating shell is connected to a lower hopper extending downward, a main material discharge port is formed at the bottom end of the lower hopper, and the material separation and discharge grooves correspond to the interior of the insulating shell above the lower hopper.

[0027] A discharging conveyor frame is installed below the main discharging opening, and the upper belt body of the conveyor belt of the discharging conveyor frame is located below and close to the main discharging opening.

[0028] The discharging conveying frame is a climbing belt conveyor.

[0029] Two return air connecting pipes are connected to the bottom plate of the condensing heat exchanger, the bottom ends of the two return air connecting pipes are connected to the two outlets of the same lower connecting pipe, the middle of the bottom wall plate of the lower connecting pipe is connected to a liquid outlet extending downward, the bottom of the liquid outlet is connected to a drain valve, and the inlet of the lower connecting pipe is connected to the outlet end of the return air pipe.

[0030] The top plate of the condensing heat exchanger is connected to two air outlets, the two air outlets are connected to two connecting ports of the third three-way connecting pipe, and another connecting port of the third three-way connecting pipe is connected to one end of a three-way connector through a connecting pipe, and both ends of the three-way connector are connected to the air inlets of the two blowers of the drying host.

[0031] A blocking plate is formed or fixed at the left end of the intake pipe, which blocks the left end of the intake pipe. The left end of the intake pipe is close to the outer end plate of the left end. The return pipe is above the intake pipe. A blocking plate is formed or fixed at the left end of the return pipe, which blocks the left end of the return pipe. The left part of the intake pipe is below the left side of the left end of the return pipe.

[0032] The cross-section of the return air duct is fan-shaped, the bottom plate of the return air duct is an annular wall plate, and multiple air intake holes are formed on the front and rear side plates from the left to the middle of the return air duct. The outer wall surface of the upper wall plate of the air intake duct is close to the bottom surface of the bottom plate of the return air duct, and the two cooperate with each other.

[0033] A plurality of stirring ribs are fixed on the inner side wall of the drying cylinder, and a bending portion is formed at the end of the stirring rib.

[0034] The connecting assembly includes an annular ring and a connecting ring, the air inlet pipe and the air return pipe are inserted into the annular ring and the connecting ring, the inner side wall of the connecting ring is pressed against the bottom surface of the air inlet pipe and the top surface of the air return pipe, the connecting ring is fixed to the air inlet pipe and the air return pipe, an annular bending portion is formed on one end surface of the outer side of the connecting ring, an inner annular bending portion is formed on the inner side of one end surface of the annular ring, the inner side wall of the inner annular bending portion is close to the bottom surface of the air inlet pipe and the top surface of the air return pipe, a wear-resistant self-lubricating ring is fixed on the outer side wall of the inner annular bending portion, the outer side wall of the wear-resistant self-lubricating ring is pressed against the inner side wall of the annular bending portion, a plurality of supporting connecting ribs are installed on the annular ring, and the outer ends of the supporting connecting ribs are welded and fixed to the inner side wall of the drying cylinder.

[0035] The outer side wall of the annular ring is fixedly connected to an outer annular connecting ring by multiple bolts, and multiple supporting connecting ribs are welded and fixed to the outer annular connecting ring. All the supporting connecting ribs in each outer annular connection are evenly distributed on the outer annular connecting ring with the central axis of the outer annular connecting ring as the center.

[0036] A plurality of material discharging slots are formed on the outer side wall of the right part of the drying cylinder, and all the material discharging slots are evenly distributed on the outer side wall of the drying cylinder with the central axis of the drying cylinder as the center.

[0037] The right end of the feed pipe is inserted into the feed hole of the outer end plate at the left end, and an end wear-resistant self-lubricating sleeve is fixed on the inner wall of the feed hole. The outer wall of the right end of the feed pipe is tightly attached to the inner wall of the end wear-resistant self-lubricating sleeve.

[0038] The outstanding effects of the present invention are:

[0039] An air inlet pipe is arranged inside the drying cylinder, with the left end of the outer end plate close to the left end of the drying cylinder, so as to ensure that the whole drying cylinder is filled with hot air, thereby improving the drying effect and drying efficiency of the material in the drying cylinder, and the air inlet pipe and the air return pipe are movably connected with the drying cylinder to ensure that the air inlet pipe and the air return pipe will not rotate with the drying cylinder, thereby ensuring the connection and drying return air effect. Description of the drawings:

[0040] Figure 1 It is a schematic diagram of the structure of the present invention;

[0041] Figure 2 yes Figure 1 A partial cross-sectional view of

[0042] Figure 3 yes Figure 2 A partial enlarged view of

[0043] Figure 4 It is a schematic diagram of the angle-changing local structure of the present invention;

[0044] Figure 5 It is a schematic diagram of the local structure of the thermal insulation shell;

[0045] Figure 6 It is a schematic diagram of the local structure of the drying cylinder;

[0046] Figure 7 yes Figure 6 A partial cross-sectional view of

[0047] Figure 8 yes Figure 7 A partial enlarged view of

[0048] Fig. 9 yes Figure 7 a partial enlarged view of another part;

[0049] Fig.10 yes Figure 7 There is also a partial enlarged view of some parts;

[0050] Fig.11 It is a schematic diagram of the local structure of a part of the drying cylinder;

[0051] Fig.12 It is a structural schematic diagram of a cross-section state of a part of the drying cylinder at a different angle;

[0052] Fig.13 It is a partial structural schematic diagram of the drying cylinder and the lower support frame;

[0053] Fig.14 yes Fig.13 A partial enlarged view of

[0054] Fig.15 It is a partial cross-sectional view of the left end of the drying cylinder;

[0055] Fig.16 is a partial cross-sectional view of another part of the drying cylinder;

[0056] Fig.17 It is a partial cross-sectional view of the right end of the drying cylinder;

[0057] Fig.18 It is a schematic diagram of the local structure at the outer annular gear ring;

[0058] Fig.19 yes Fig.18 AA section view;

[0059] Fig. 20 It is a schematic diagram of the local structure of the angle change at the outer annular gear ring;

[0060] Fig.21It is a schematic diagram of the local structure of the lower connecting pipe;

[0061] Fig. 22 It is a partial structural diagram of the drying host;

[0062] Fig.23 This is a schematic diagram of the partial structure of the drying host at a changed angle;

[0063] Fig.24 This is a partial top view of the drying host;

[0064] Fig.25 yes Fig.24 BB cross-sectional view;

[0065] Fig.26 yes Fig.25 A partial enlarged view of . Specific implementation method:

[0066] For example, see Figures 1 to 26 As shown, a fresh material micro-oxygen dryer comprises a drying cylinder 10, a feeding device 80 is arranged at the left side of the drying cylinder 10, a lower support frame 20 is arranged below the drying cylinder 10, the lower support frame 20 is fixed on the ground below or on the main horizontal bottom plate fixed on the ground, the top surfaces of the left end, middle part and right end of the lower support frame 20 are fixed with support plates, the left and right parts of the top surfaces of the front and rear parts of the support plates are fixed with bearing seats, the rotating shaft parts at the left and right ends of the driving roller 21 are fixed on the inner rings of the bearings of the corresponding bearing seats; the outer side walls of the flange connection parts 11 of the left, middle and right parts of the drying cylinder 10 are pressed against the top surfaces (the outer side walls close to the top) of the corresponding front and rear driving rollers 21;

[0067] A plurality of connection blocks 12 are installed on the outer sides of the left and right parts of the drying cylinder 10, and an outer annular gear ring 13 is inserted and sleeved on the drying cylinder 10, and the outer annular gear ring 13 is fixed on the connection plates 14 fixed on the left and right sides of the connection blocks 12;

[0068] All the connection blocks 12 on each outer annular gear ring 13 are evenly distributed on the outer side of the left or right part of the drying cylinder 10 with the central axis of the drying cylinder 10 as the center.

[0069] A fixing plate extending forward and backward is fixed on the top surface of the lower support frame 20 below the outer annular gear ring 13, and transmission bearing seats are fixed to the left and right parts of the front and rear top surfaces of the fixing plate. The two ends of the main transmission shaft 126 are fixed to the inner rings of the bearings of the two corresponding transmission bearing seats on the left and right. A driving gear ring 127 is formed or fixed on the outer side wall of the middle part of the main transmission shaft 126, and the driving gear ring 127 is meshed with the corresponding outer annular gear ring 13;

[0070] A reduction motor 19 is fixed on the top surface of the lower support frame 20 on one side of the fixed plate, and one end of the corresponding main transmission shaft 126 extends out of the corresponding transmission bearing seat and is connected to the output shaft of the reduction motor 19 through a coupling;

[0071] The outer end plates 17 are fixed to the end faces of the left and right ends of the drying cylinder 10, and a feed hole is formed in the middle of the outer end plate 17 at the left end, and the right end of the feed pipe 30 is inserted into the feed hole of the outer end plate 17 at the left end, and an end wear-resistant self-lubricating sleeve 179 is fixed to the inner side wall of the feed hole, and the outer side wall of the right end of the feed pipe 30 is in close contact with the inner side wall of the end wear-resistant self-lubricating sleeve 179. This structure ensures that when the drying cylinder 10 rotates, the feed pipe 30 does not need to rotate with it.

[0072] The left end of the feed pipe 30 is connected to the discharge port of the feed device 80;

[0073] The air inlet pipe 40 and the air return pipe 50 are inserted into the drying cylinder 10, and the right ends of the air inlet pipe 40 and the air return pipe 50 extend out of the middle through hole of the outer end plate 17 at the right end;

[0074] The bottom wall plate of the air inlet pipe 40 is formed with a plurality of air outlet holes 41, and the side wall of the air return pipe 50 is formed with a plurality of air inlet holes 51;

[0075] The air inlet pipe 40 and the air return pipe 50 are movably connected in the drying cylinder 10 through a plurality of connecting components;

[0076] A drying main unit 1000 is fixed on the ground at the right rear part of the drying cylinder 10 or on the top surface of the main horizontal bottom plate, and a condensing heat exchanger 90 is fixed on the ground at the left side of the drying main unit 1000 or on the top surface of the main horizontal bottom plate (the condensing heat exchanger 90 used in this embodiment is a well-known condensing heat exchanger that can be directly purchased on the market, which will not be described in detail here), the air outlet end of the return air pipe 50 is connected to the return air connecting pipe 91 at the bottom of the condensing heat exchanger 90, the top connecting pipe of the condensing heat exchanger 90 is connected to one end of a three-way connector, and both ends of the three-way connector are connected to the air inlets of the two blowers 190 of the drying main unit 1000;

[0077] The right end of the air inlet pipe 40 is connected to one end of the first three-way connector, and the other two ends of the first three-way connector are connected to the two air outlet connectors 140 of the drying host 1000.

[0078] Furthermore, an air tank 2000 is fixed on the ground on the left side of the condensing heat exchanger 90 or on the top surface of the main horizontal bottom plate, and the top end of the vertical exhaust pipe 1080 of the drying main unit 1000 is connected to the air inlet connected to the lower side wall of the air tank 2000 through a connecting pipe, and the air outlet connected to the upper side wall of the air tank 2000 is connected to the air inlet of the circulating blower 2001 through a connecting pipe, and the air outlet of the circulating blower 2001 is connected to the bottom feed pipe 81 of the feeding device 80 through a connecting pipe.

[0079] Furthermore, the feeding device 80 includes a fixed support frame 82, which is located at the left side of the lower support frame 20 and fixed to the ground or the main horizontal bottom plate, an upper feeding pipe 83 and an upper reduction conveying motor 84 are fixed to the top surface of the upper plate of the fixed support frame 82, a bottom feeding pipe 81 and a bottom reduction conveying motor 85 are fixed to the top surface of the lower plate of the fixed support frame 82, two spiral conveying rods 86 are respectively inserted into the upper feeding pipe 83 and the bottom feeding pipe 81, the outer side of the spiral teeth of the spiral conveying rod 86 is close to the inner side wall of the upper feeding pipe 83 or the bottom feeding pipe 81, and the left side of the spiral conveying rod 86 is The left end of the spiral conveying rod 86 is movably connected to the left part of the upper feed pipe 83 or the bottom feed pipe 81 through a bearing, and extends out of the left end of the upper feed pipe 83 or the bottom feed pipe 81 and is fixedly connected to the output shaft of the corresponding upper reduction conveying motor 84 or the output shaft of the bottom reduction conveying motor 85 through a coupling; the right end of the bottom feed pipe 81 is connected to the left end of the feed pipe 30, and the right end of the bottom feed pipe 81 is the discharge port of the feeding device 80. The right end of the spiral conveying rod 86 in the bottom feed pipe 81 extends into the feed pipe 30, and the outer side of the spiral teeth of the right part of the corresponding spiral conveying rod 86 is close to the inner side wall of the feed pipe 30;

[0080] A feed funnel 87 is fixed to the middle top surface of the upper feed pipe 83 and the bottom feed pipe 81 , and the discharge port of the feed funnel 87 is communicated with the feed through groove formed on the top plate of the upper feed pipe 83 or the bottom feed pipe 81 .

[0081] Furthermore, a vertical feed pipe 871 is fixed to the middle of the top surface of the fixed top plate fixed to the top of the lower feed hopper 87, the bottom end of the vertical feed pipe 871 is connected to the middle through hole of the fixed top plate, the right end of the upper feed pipe 83 passes through the upper side wall of the vertical feed pipe 871 and extends into the upper part of the vertical feed pipe 871 and is connected to the vertical feed pipe 871, the right part of the upper feed pipe 83 is fixed on the vertical feed pipe 871, and the right end of the bottom feed pipe 81 is connected to the left end of the feed pipe 30;

[0082] The top plate of the vertical feed pipe 871 is connected to a top exhaust pipe 872;

[0083] The air inlet on the middle side wall of the bottom feed pipe 81 is connected to the air outlet of the circulation blower 2001 through a connecting pipe.

[0084] Furthermore, the bottom end of the gas tank 2000 is connected to a discharge port, and the bottom end of the discharge port is connected to a control valve (which is a conventionally available and well-known product, no longer described in detail, omitted and not shown in the drawings, which can open the control valve at a fixed time to discharge impurities at the bottom of the gas tank 2000, which are impurities such as dust mixed in the incoming gas), and a safety valve is installed at the top of the gas tank 2000 (which is a conventionally available and well-known product, no longer described in detail, omitted and not shown in the drawings), the air inlet of the safety valve is connected to the gas tank 2000, and a pressure sensor is installed on the outer wall of the gas tank 2000, and its sensing end extends into the gas tank 2000 to achieve sensing. When its pressure exceeds the limit value, the safety valve will open to achieve exhaust. The gas tank 2000 is an insulated gas tank, and all pipelines in this embodiment are insulated pipes.

[0085] Furthermore, the drying cylinder 10 is formed by connecting a plurality of sub-cylinder bodies 15, and flange rings 16 are welded and fixed on the outer side walls of the left and right ends of each sub-cylinder body 15, and the two flange rings 16 at the adjacent ends of the two adjacent sub-cylinder bodies 15 on the left and right are fixedly connected by bolts, and a raised ring is formed on the inner side of the left end face of the right flange ring 16, and an annular groove is formed inside the right end face of the left flange ring 16, and the raised ring is nested in the annular groove, and the left end face of the right flange ring 16 is pressed against the right end face of the left flange ring 16 and fixedly connected by bolts;

[0086] The outer side walls of the two flange rings 16 are on the same annular wall surface and constitute the flange connection part 11, and the outer end surfaces of the flange rings 16 at the outer ends of the leftmost and rightmost drying cylinder bodies 10 are fixedly connected with outer end plates 17 by bolts, wherein an annular groove is formed at the inner side of the right end surface of the outer end plate 17 on the left side, and a raised ring at the inner side of the left end surface of the flange ring 16 on the right side is nested in the inserted annular groove, and the right end surface of the outer end plate 17 on the left side is pressed against the left end surface of the flange ring 16 on the right side and is fixedly connected by bolts; and a raised ring is formed at the inner side of the left end surface of the outer end plate 17 of the flange ring 16 of the drying cylinder body 10 on the right side, which is nested in the annular groove formed at the inner side of the right end surface of the flange ring 16 on the left side, and the left end surface of the outer end plate 17 on the right side is pressed against the right end surface of the corresponding flange ring 16 and is fixedly connected by bolts;

[0087] The outer wall of the outer end plate 17 and the outer wall of the corresponding flange ring 16 are on the same annular wall surface and constitute a flange connection part 11. The outer wall of the flange connection part 11 is pressed against the top surfaces of the two corresponding front and rear transmission rollers 21. The outer walls of the left and right ends of the transmission roller 21 are formed with radially extending edges 22, or the outer walls of the annular rings fixed at the left and right ends of the transmission roller 21 are formed with radially extending edges 22. The lower part of the flange connection part 11 is located between the corresponding two radially extending edges 22.

[0088] Furthermore, the two flange rings 16 of the corresponding two sub-drums 15 are fixedly connected with a plurality of connection blocks 12 by bolts, and the connection block 12 is located at one end surface of one of the flange rings 16, and the corresponding plurality of connection blocks 12 are evenly distributed on the outer side of the left or right part of the drying drum 10 with the central axis of the drying drum 10 as the center;

[0089] The inner wall of the connecting block 12 is an arc-shaped wall surface which is close to the outer wall of the corresponding sub-cylinder body 15. An extended connecting portion 121 is formed at the outer wall of the connecting block 12. A through hole is formed in the middle of the extended connecting portion 121 and passes through the left and right sides. The heat insulating sleeve 122 is in the through hole. The outer wall of the heat insulating sleeve 122 is pressed against or tightly attached to the inner wall of the through hole. A connecting rod 123 is inserted or clamped in the middle through hole of the heat insulating sleeve 122. The left and right ends of the connecting rod 123 extend out of the two ends of the heat insulating sleeve 122 and are inserted or clamped with a heat insulating gasket 124. The heat insulating gasket 124 is in the heat insulating sleeve 12 2, a connecting plate 14 is fixedly connected to the left and right walls of the outer annular gear ring 13 by bolts, two heat-insulating washers 124 extend from the left and right ends of the connecting rod 123 and are inserted into the corresponding connecting through holes of the connecting plate 14, and the screw-connecting parts formed on the left and right ends of the connecting rod 123 extend out of the outer ends of the corresponding connecting through holes and are inserted with washers and screwed with locking nuts, the washers are clamped between the locking nuts and the outer end faces of the corresponding connecting plates 14, and the heat-insulating washers 124 are clamped between the inner end faces of the connecting plates 14 and the left end face or the right end face of the extended connecting part 121.

[0090] The heat-insulating gasket 124 and the heat-insulating sleeve 122 are both made of mica, and have good heat-insulating effect.

[0091] When this embodiment is in use, it is operated by the reduction motor 19, so that the driving ring gear 127 rotates, driving the corresponding outer annular ring gear 13 to rotate, thereby realizing the rotation of the drying cylinder 10. During the rotation process, the heat insulation effect of the insulation gasket 124 and the insulation sleeve 122 greatly reduces the heat transferred to the reduction motor 19, thereby ensuring its normal operation and service life.

[0092] Furthermore, a plurality of material discharging grooves 109 are formed on the outer wall of the right portion of the drying cylinder 10; an insulating outer shell 3000 is provided on the outside of the drying cylinder 10, and the drying cylinder 10 is in the insulating outer shell 3000. The bottom surface of the insulating outer shell 3000 is fixed on the top surface of the lower support frame 20, and the bottom surface of the right portion of the insulating outer shell 3000 is connected to a downwardly extending lower hopper 3001, and a main discharge port 3002 is formed at the bottom end of the lower hopper 3001. The material discharging grooves 109 correspond to the interior of the insulating outer shell 3000 above the lower hopper 3001.

[0093] Furthermore, a discharge conveyor rack 3003 is installed below the main discharge opening 3002, and the upper belt body of the conveyor belt of the discharge conveyor rack 3003 is located below and close to the main discharge opening 3002.

[0094] Furthermore, the discharging conveying frame 3003 is a climbing belt conveyor, which is a conventional structure and will not be described in detail here.

[0095] Furthermore, two return air connecting pipes 92 are connected to the bottom plate of the condensing heat exchanger 90, and the bottom ends of the two return air connecting pipes 92 are connected to the two outlets of the same lower connecting pipe 93. A downwardly extending liquid outlet 94 is connected to the middle of the bottom wall plate of the lower connecting pipe 93, and the bottom of the liquid outlet 94 is connected to a drain valve 95, and the inlet of the lower connecting pipe 93 is connected to the gas outlet end of the return air pipe 50. A liquid level sensor is fixed on the top wall plate of the lower connecting pipe 93, and the sensing end of the liquid level sensor extends into the lower connecting pipe 93, which can sense the water level of the condensed water in the lower connecting pipe 93. When the water level is higher than the set value, the drain valve 95 (which is an electric drain valve) can be controlled to open to achieve drainage. When the water level reaches the lowest position, the drain valve 95 is closed.

[0096] The top plate of the condensing heat exchanger 90 is connected to two air outlets, and the two air outlets are connected to two connecting ports of the third three-way connecting pipe. Another connecting port of the third three-way connecting pipe is connected to the air outlet of the nitrogen replenishing pump through a connecting pipe (the side wall of this connecting pipe can be connected. At the same time, a pressure sensor is fixed on the side wall of this connecting pipe, and its detection end extends into the connecting pipe. The air inlet of the nitrogen replenishing pump is connected to the external nitrogen tank to realize nitrogen replenishment. The gas pressure in this connecting pipe is sensed by the pressure sensor. When the pressure reaches the maximum set value, it can be To stop replenishing nitrogen. When the pressure is lower than the minimum set value, the main control unit controls the replenishing pump to run the replenishing nitrogen to ensure that the gas pressure in the connecting pipe is at a positive pressure, thereby ensuring that the drying cylinder 10 is at a slightly positive pressure, that is, a little higher than the external pressure, to ensure that the external air does not enter the drying cylinder 10 and other gas-flowing components or cavities. This is a conventional structure, not shown in the accompanying drawings) and is connected to one end of the three-way connector, and both ends of the three-way connector are connected to the air inlets of the two blowers 190 of the drying main unit 1000.

[0097] Furthermore, the wall panels of the heat-insulating outer shell 3000 are hollow panels, that is, there is a hollow layer between the inner wall and the outer wall, thereby reducing heat transfer and achieving a heat-insulating effect.

[0098] Furthermore, a blocking plate is formed or fixed at the left end of the air inlet pipe 40, the blocking plate blocks the left end of the air inlet pipe 40, the left end of the air inlet pipe 40 is close to the outer end plate 17 at the left end, the return pipe 50 is above the air inlet pipe 40, the left end of the return pipe 50 is formed or fixed with a blocking plate, which blocks the left end of the return pipe 50, and the left part of the air inlet pipe 40 is below the left side of the left end of the return pipe 50. This structure allows the gas coming out of the left part of the air inlet pipe 40 to first fill the left part of the drying cylinder 10, and it will not immediately enter the return pipe 50, so that the entire drying cylinder 10 can be filled with hot air for drying.

[0099] The cross-section of the return air duct 50 is fan-shaped, and the bottom plate of the return air duct 50 is an annular wall plate. A plurality of air intake holes 51 are formed on the front and rear side plates from the left to the middle of the return air duct 50. The outer wall surface of the upper wall plate of the air intake duct 40 is close to the bottom surface of the bottom plate of the return air duct 50, and the two cooperate with each other.

[0100] The air inlet pipe 40 and the air return pipe 50 are movably connected in the drying cylinder 10 through a plurality of connecting components.

[0101] The connecting assembly includes an annular ring 70 and a connecting ring 71, the air inlet pipe 40 and the air return pipe 50 are inserted into the annular ring 70 and the connecting ring 71, the inner side wall of the connecting ring 71 presses against the bottom surface of the air inlet pipe 40 and the top surface of the air return pipe 50, the connecting ring 71 is fixed to the air inlet pipe 40 and the air return pipe 50, an annular bending portion is formed on one end surface of the outer side of the connecting ring 71, an inner annular bending portion is formed on the inner side of one end surface of the annular ring 70, the inner side wall of the inner annular bending portion is close to the bottom surface of the air inlet pipe 40 and the top surface of the air return pipe 50, a wear-resistant self-lubricating ring 72 is fixed on the outer side wall of the inner annular bending portion, the outer side wall of the wear-resistant self-lubricating ring 72 presses against the inner side wall of the annular bending portion, a plurality of supporting connecting ribs 73 are installed on the annular ring 70, and the outer ends of the supporting connecting ribs 73 are welded and fixed to the inner side wall of the drying cylinder 10.

[0102] The outer wall of the annular ring 70 is fixedly connected to an outer annular connecting ring 74 by multiple bolts, and multiple supporting connecting ribs 73 are welded and fixed to the outer annular connecting ring 74. All the supporting connecting ribs 73 in each outer annular connecting ring 74 are evenly distributed on the outer annular connecting ring 74 with the central axis of the outer annular connecting ring 74 as the center.

[0103] Furthermore, all the material discharging channels 109 are evenly distributed on the outer wall of the drying cylinder 10 with the central axis of the drying cylinder 10 as the center.

[0104] The inner diameters of all the outlet holes 41 of the air inlet pipe 40 gradually decrease from left to right. This structure can ensure that the interior of the entire drying cylinder 10 is evenly filled with hot air, ensuring even drying of the materials therein.

[0105] Furthermore, a plurality of stirring ribs 60 are fixed on the inner wall of the drying cylinder 10, and the ends of the stirring ribs 60 are formed with bent portions 61. This structure allows the materials inside the drying cylinder 10 to be stirred by the stirring ribs 60 when the drying cylinder 10 rotates, so as to improve the uniformity of drying and the drying speed.

[0106] The drying host 1000 in this embodiment includes an upper heat exchange shell 1001 and a lower heat exchange shell 1100, and an intermediate shell 120 is fixed between the upper heat exchange shell 1001 and the lower heat exchange shell 1100. The intermediate shell 120 is welded and fixed by four side plates on the left, right, front and back sides to form a rectangular frame shape, and its top surface is welded and fixed to the bottom surface of the bottom plate of the upper heat exchange shell 1001, and its bottom surface is welded and fixed to the top surface of the top plate of the lower heat exchange shell 1100;

[0107] A vertical partition plate 1210 is fixed to the middle of the right part of the intermediate shell 120. The front and rear side walls of the vertical partition plate 1210 are welded and fixed to the inner side walls of the front and rear wall plates of the intermediate shell 120. The top and bottom surfaces of the vertical partition plate 1210 are welded and fixed to the bottom plate of the upper heat exchange shell 1001 and the top plate of the lower heat exchange shell 1100. The vertical partition plate 1210 divides the intermediate shell 120 into an air intake transition chamber 1220 on the right and an air return chamber 1230 on the left.

[0108] A plurality of upper heat exchange air ducts 130 are provided in the upper heat exchange shell 1001 directly above the air inlet transition chamber 1220. The upper heat exchange air ducts 130 are fixed on the top plate and the bottom plate of the upper heat exchange shell 1001. The top and bottom ends of the upper heat exchange air ducts 130 extend out of the top surface of the top plate and the bottom surface of the bottom plate of the upper heat exchange shell 1001. A plurality of lower heat exchange air ducts 1110 are provided in the lower heat exchange shell 1100 directly below the air inlet transition chamber 1220. The lower heat exchange air ducts 1110 are fixed on the top plate and the bottom plate of the lower heat exchange shell 1100. The top and bottom ends of the lower heat exchange air ducts 1110 extend out of the top surface of the top plate and the bottom surface of the bottom plate of the lower heat exchange shell 1100. All the upper heat exchange air ducts 130 and the lower heat exchange air ducts 1110 are in communication with the air inlet transition chamber 1220.

[0109] A plurality of upper return air heat exchange air ducts 1040 are provided in the upper heat exchange shell 1001 directly above the return air cavity 1230, and the upper return air heat exchange air ducts 1040 are fixed on the top plate and the bottom plate of the upper heat exchange shell 1001, and the top and bottom ends of the upper return air heat exchange air ducts 1040 extend out of the top surface of the top plate and the bottom surface of the bottom plate of the upper heat exchange shell 1001; a plurality of lower return air heat exchange air ducts 1050 are provided in the lower heat exchange shell 1100 directly below the return air cavity 1230, and the lower return air heat exchange air ducts 1050 are fixed on the top plate and the bottom plate of the lower heat exchange shell 1100, and the top and bottom ends of the lower return air heat exchange air ducts 1050 extend out of the top surface of the top plate and the bottom surface of the bottom plate of the lower heat exchange shell 1100, and all the upper return air heat exchange air ducts 1040 and the lower return air heat exchange air ducts 1050 are in communication with the return air cavity 1230;

[0110] A plurality of heat exchange fins 1120 extending outward are formed on the outer and inner walls of the upper heat exchange air duct 130, the lower heat exchange air duct 1110, the upper return air heat exchange air duct 1040, and the lower return air heat exchange air duct 1050. The inner diameters of the upper return air heat exchange air duct 1040 and the lower return air heat exchange air duct 1050 are larger than the inner diameters of the upper heat exchange air duct 130 and the lower heat exchange air duct 1110.

[0111] Furthermore, the right side plates of the upper heat exchange shell 1001 and the lower heat exchange shell 1100 are both connected with air outlet connectors 140, the left side plates of the upper heat exchange shell 1001 and the lower heat exchange shell 1100 are both connected with air inlet connectors 150, a lower support frame 160 is fixed to the bottom surface of the bottom plate of the lower heat exchange shell 1100, a bottom support plate is fixed to the bottom of the lower support frame 160, a heating box 170 is fixed to the bottom surface of the bottom plate of the lower heat exchange shell 1100, a heating device 180 is installed in the heating box 170, and the bottom ends of all lower heat exchange air ducts 1110 are connected to the heating box 170.

[0112] A plurality of heat exchange fins 1120 extending outward are formed on the outer sidewall and the inner sidewall of the upper heat exchange air duct 130 and the lower heat exchange air duct 1110 .

[0113] A viewing port is connected to one side plate of the heating box 170 .

[0114] A through groove is formed in the middle of the front wall plate of the heating box body 170, the front of the heating device 180 faces the through groove, and the front of its bottom frame extends out of the through groove. A lower through groove is formed on the bottom plate of the heating box body 170, which is located directly below the heating device 180.

[0115] Furthermore, the air inlet connectors 150 of the upper heat exchange shell 1001 and the lower heat exchange shell 1100 are both connected to the air outlets of the corresponding blowers 190, and the two blowers 190 are fixed on the side support frames fixed on the top surface of the bottom support plates at the left side of the upper heat exchange shell 1001 and the lower heat exchange shell 1100.

[0116] An air collecting hood 1010 is fixed on the top surface of the top plate of the upper heat exchange shell 1001 at all the upper heat exchange air ducts 130. The air collecting hood 1010 covers the top of all the upper heat exchange air ducts 130 and communicates with all the upper heat exchange air ducts 130. The top of the air collecting hood 1010 is connected to an upper connecting pipe 1020.

[0117] A return air hood 1060 is fixed on the top surface of the top plate of the upper heat exchange shell 1001 at the top of all the upper return air heat exchange air ducts 1040, and the top ends of all the upper return air heat exchange air ducts 1040 are in the return air hood 1060. The air outlet of the upper connecting pipe 1020 is fixed on the top plate of the return air hood 1060 and communicates with the return air hood 1060.

[0118] A lower air collecting shell 1070 is fixed to the bottom surface of the bottom plate of the lower heat exchange shell 1100 directly below the return air cavity 1230, the bottom ends of all lower return air heat exchange air ducts 1050 are connected to the lower air collecting shell 1070, and the rear wall plate of the lower air collecting shell 1070 is connected to a vertical exhaust pipe 1080 extending upward.

[0119] The heating device 180 is a gas combustion furnace. The structure and principle of the main combustion part of a small heating and drying furnace in Chinese Patent Application No. 202322115438.1 are basically the same, and will not be described in detail here.

[0120] When the present embodiment is in use, fresh materials to be dried, such as fresh bamboo chips, are poured into the upper feeding funnel 87, and the upper reduction conveying motor 84 is operated to rotate the upper screw conveying rod 86, and the materials are conveyed into the vertical feeding pipe 871, and then fall into the lower feeding funnel 87, and then the lower bottom reduction conveying motor 85 is operated to rotate the lower screw conveying rod 86, so that the materials enter the drying cylinder 10 through the feeding pipe 30 (before operation, the drying cylinder 10 and other cavities through which the drying gas flows in the present device are filled with nitrogen, so that the external oxygen is not easy to enter the interior, so as to ensure the drying operation under micro-oxygen or anaerobic conditions, and nitrogen, as an inert gas, does not contain active genes and is not easy to react chemically with other substances. This characteristic enables nitrogen to effectively prevent oxygen from contacting with objects in a heating environment, thereby reducing the occurrence of oxidation reactions. Secondly, the nitrogen in the nitrogen oven can also reduce the humidity in the oven to a certain extent, which helps to prevent the objects from getting damp and deteriorating, and improve the baking quality.);

[0121] At the same time, the heating device 180 is turned on to achieve heating. At this time, with the operation of the circulating blower 2001, the external air enters the heating device 180 and is heated. Then, the heated gas enters the air intake transition chamber 1220 along all the lower heat exchange air ducts 1110 for mixing, and then is transported upward through all the upper heat exchange air ducts 130; the air intake transition chamber 1220 can ensure the stability of the gas flow.

[0122] By operating two blowers 190, gas (nitrogen filled in the cavity through which the drying gas flows in the drying cylinder 10 of this embodiment and other parts of the equipment) enters the upper heat exchange shell 1001 and the lower heat exchange shell 1100, and exchanges heat with the gas heated by the lower heat exchange air duct 1110 and the upper heat exchange air duct 130, and the heat exchange efficiency and effect are improved by the heat exchange fins 1120.

[0123] Then, the gas enters the air inlet pipe 40 from the air outlet connector 140, and is blown out into the drying cylinder 10 from the air outlet hole 41. Since the left end of the air inlet pipe 40 is close to the outer end plate 17 at the left end, and the left end of the return air pipe 50 is far away from the outer end plate 17 at the left end, the gas coming out of the left end will not immediately enter the air inlet hole 51 of the return air pipe 50, thereby increasing the flow time of the gas in the drying cylinder 10 and improving the heat exchange effect.

[0124] The gas dries and dehydrates the material in the drying cylinder 10. At the same time, the reduction motor 19 runs, driving the drying cylinder 10 to rotate, causing the material inside to tumble, thereby ensuring uniform drying.

[0125] Then, the gas enters the return air pipe 50 through the air inlet hole 51, and then enters the condensing heat exchanger 90. The fan of the condensing heat exchanger 90 is operated to allow the incoming gas to exchange heat with the external air and cool down. The water vapor in the gas condenses into water droplets and falls along the pipe wall into the lower connecting pipe 93. It is generally ensured that the water reaches the highest position at half of the cross-section of the lower connecting pipe 93. When it reaches the highest position, the drain valve 95 needs to be opened to drain the water. This specific method has been introduced above and will not be described in detail here.

[0126] The condensed gas is operated through two blowers 190, and returns to the upper heat exchange shell 1001 and the lower heat exchange shell 1100, and is then heated and returned to the drying cylinder 10, thereby realizing a recycling drying effect.

[0127] The combustion gas after heat exchange enters into all the upper return air heat exchange air ducts 1040 from the air collecting hood 1010, and then enters into the return air chamber 1230 for transition mixing, and then enters into the lower air collecting shell 1070 from all the lower return air heat exchange air ducts 1050, and finally enters into the gas storage tank 2000 through the vertical exhaust pipe 1080. When the gas flows in the gas storage tank 2000, dust and other impurities mixed in the gas will fall to the bottom of the gas storage tank 2000, and the control valve can be opened at a fixed time to discharge the impurities at the bottom.

[0128] Then, the gas in the gas storage tank 2000 flows into the bottom feed pipe 81 to preheat the material therein. Since there is a slight positive pressure inside the drying cylinder 10, the gas cannot enter the drying cylinder 10, but is discharged from the top exhaust pipe 872 along the vertical feed pipe 871.

[0129] This embodiment can ensure that the entire drying cylinder 10 is filled with hot air, thereby improving the drying effect and drying efficiency of the material in the drying cylinder 10, and its air inlet pipe 40 and air return pipe 50 are movably connected to the drying cylinder 10 to ensure that the air inlet pipe 40 and the air return pipe 50 will not rotate with the drying cylinder 10, thereby ensuring the connection and drying return air effect.

Claims

1. A fresh material micro-oxygen drying machine, comprising a drying cylinder (10), characterized in that: A feeding device (80) is provided on the left side of the drying cylinder (10), and a lower support frame (20) is provided below the drying cylinder (10). Support plates are fixed to the top surfaces of the left end, middle part and right end of the lower support frame (20), and bearing seats are fixed to the left and right parts of the top surfaces of the front and rear parts of the support plates. The rotating shafts at the left and right ends of the driving roller (21) are fixed to the inner rings of the bearings of the corresponding bearing seats; the outer side walls of the flange connection parts (11) at the left, middle and right parts of the drying cylinder (10) are pressed against the top surfaces of the corresponding front and rear driving rollers (21); A plurality of connection blocks (12) are installed on the outer sides of the left and right parts of the drying cylinder (10); an outer annular gear ring (13) is inserted into the drying cylinder (10); and the outer annular gear ring (13) is fixed to connection plates (14) fixed on the left and right sides of the connection blocks (12); A fixing plate extending forward and backward is fixed on the top surface of the lower support frame (20) below the outer annular gear ring (13), and transmission bearing seats are fixed to the left and right parts of the front and rear top surfaces of the fixing plate. The two ends of the main transmission shaft (126) are fixed to the inner rings of the bearings of the two corresponding transmission bearing seats on the left and right. A driving gear ring (127) is formed or fixed on the outer side wall of the middle part of the main transmission shaft (126), and the driving gear ring (127) is meshed with the corresponding outer annular gear ring (13); A reduction motor (19) is fixed on the top surface of the lower support frame (20) on one side of the fixed plate, and one end of the corresponding main transmission shaft (126) extends out of the corresponding transmission bearing seat and is connected to the output shaft of the reduction motor (19) through a coupling; The outer end plates (17) are fixed to the end surfaces of the left and right ends of the drying cylinder (10); a feed through hole is formed in the middle of the outer end plate (17) at the left end; the right part of the feed pipe (30) is located in the feed through hole and is movably connected to the outer end plate (17) at the left end; the left end of the feed pipe (30) is connected to the discharge port of the feed device (80); The air inlet pipe (40) and the air return pipe (50) are inserted into the drying cylinder (10), and the right ends of the air inlet pipe (40) and the air return pipe (50) extend out of the middle through hole of the outer end plate (17) at the right end; A plurality of air outlet holes (41) are formed on the bottom wall plate of the air inlet pipe (40), and a plurality of air inlet holes (51) are formed on the side wall of the air return pipe (50); The air inlet pipe (40) and the air return pipe (50) are movably connected in the drying cylinder (10) via a plurality of connecting components; A drying main unit (1000) is fixed to the right rear portion of the drying cylinder (10), a condensing heat exchanger (90) is provided on the left side of the drying main unit (1000), an air outlet end of the return air pipe (50) is connected to the return air connecting pipe (91) at the bottom of the condensing heat exchanger (90), a top connecting pipe of the condensing heat exchanger (90) is connected to one end of a three-way connector, and both ends of the three-way connector are connected to the air inlets of two blowers (190) of the drying main unit (1000); The right end of the air inlet pipe (40) is connected to one end of a first three-way connector, and the other two ends of the first three-way connector are connected to two air outlet connectors (14) of the drying main unit (1000).

2. A fresh material micro-oxygen drying machine according to claim 1, characterized in that: An air storage tank (2000) is provided on the left side of the condensing heat exchanger (90); the top end of the vertical exhaust pipe (1080) of the drying main unit (1000) is connected to an air inlet on the lower side wall of the air storage tank (2000) through a connecting pipe; the air outlet on the upper side wall of the air storage tank (2000) is connected to an air inlet of a circulating blower (2001) through a connecting pipe; and the air outlet of the circulating blower (2001) is connected to a bottom feed pipe (81) of the feeding device (80) through a connecting pipe.

3. A fresh material micro-oxygen drying machine according to claim 1, characterized in that: The feeding device (80) comprises a fixed support frame (82), the fixed support frame (82) is located on the left side of the lower support frame (20), an upper feeding pipe (83) and an upper reduction conveying motor (84) are fixed on the top surface of the upper plate of the fixed support frame (82), a bottom feeding pipe (81) and a bottom reduction conveying motor (85) are fixed on the top surface of the lower plate of the fixed support frame (82), two spiral conveying rods (86) are respectively inserted into the upper feeding pipe (83) and the bottom feeding pipe (81), and the spiral conveying rods (86) are respectively inserted into the upper feeding pipe (83) and the bottom feeding pipe (81). The outer side of the spiral teeth of the conveying rod (86) is close to the inner side wall of the upper feed pipe (83) or the bottom feed pipe (81), the left part of the spiral conveying rod (86) is movably connected to the left part of the upper feed pipe (83) or the bottom feed pipe (81) through a bearing, and the left end of the spiral conveying rod (86) extends out of the left end of the upper feed pipe (83) or the bottom feed pipe (81) and is fixedly connected to the output shaft of the corresponding upper reduction conveying motor (84) or the output shaft of the bottom reduction conveying motor (85) through a coupling; A feeding funnel (87) is fixed on the middle top surface of the upper feeding pipe (83) and the bottom feeding pipe (81), and the discharge port of the feeding funnel (87) is communicated with a feeding groove formed on the top plate of the upper feeding pipe (83) or the bottom feeding pipe (81).

4. A fresh material micro-oxygen drying machine according to claim 3, characterized in that: A vertical feed pipe (871) is fixed to the middle of the top surface of the fixed top plate fixed to the top of the feed hopper (87) below, the bottom end of the vertical feed pipe (871) is connected to the middle through hole of the fixed top plate, the right end of the upper feed pipe (83) extends into the upper part of the vertical feed pipe (871) and is connected to the vertical feed pipe (871), and the right end of the bottom feed pipe (81) is connected to the left end of the feed pipe (30); The top plate of the vertical feed pipe (871) is connected to a top exhaust pipe (872); The air inlet on the middle side wall of the bottom feed pipe (81) is connected to the air outlet of the circulation blower (2001) through a connecting pipe.

5. A fresh material micro-oxygen drying machine according to claim 1, characterized in that: The bottom end of the gas storage tank (2000) is connected to a liquid discharge pipe, the bottom end of the liquid discharge pipe is connected to a control valve, and a safety valve is installed at the top end of the gas storage tank (2000), the air inlet of the safety valve is connected to the gas storage tank (2000).

6. A fresh material micro-oxygen drying machine according to claim 1, characterized in that: The drying cylinder (10) is formed by connecting a plurality of sub-cylinders (15). Flange rings (16) are welded and fixed on the outer side walls of the left and right ends of each sub-cylinder (15). The two flange rings (16) at the adjacent ends of the two adjacent sub-cylinders (15) are fixedly connected by bolts. The outer side walls of the two flange rings (16) are located on the same annular wall surface and form a flange connection part (11). The outer end surfaces of the flange rings (16) at the outer ends of the left and right drying cylinders (10) are fixedly connected with outer end plates (17) by bolts. The outer wall of the outer end plate (17) and the outer wall of the corresponding flange ring (16) are located on the same annular wall surface and form a flange connection part (11). The outer wall of the flange connection part (11) is pressed against the top surfaces of the two corresponding front and rear transmission rollers (21). The outer walls of the left and right ends of the transmission roller (21) are formed with radially extending edges (22) or the outer walls of the annular rings fixed at the left and right ends of the transmission roller (21) are formed with radially extending edges (22). The lower part of the flange connection part (11) is located between the two corresponding radially extending edges (22).

7. A fresh material micro-oxygen drying machine according to claim 6, characterized in that: A plurality of connection blocks (12) are fixedly connected to a flange ring (16) at one end of the sub-drum (15) by bolts, and the corresponding plurality of connection blocks (12) are evenly distributed on the outside of the left or right part of the drying drum (10) with the central axis of the drying drum (10) as the center; The inner side wall of the connection block (12) is an arc-shaped wall surface which is close to the outer side wall of the corresponding sub-cylinder body (15). An extended connection part (121) is formed at the outer side wall of the connection block (12). A through hole is formed in the middle of the extended connection part (121) and passes through the left and right sides. The heat insulation sleeve (122) is located in the through hole. The outer side wall of the heat insulation sleeve (122) is pressed against or closely attached to the inner side wall of the through hole. A connecting rod (123) is inserted or clamped in the middle through hole of the heat insulation sleeve (122). ), the left and right ends of the connecting rod (123) extend out of the two ends of the heat insulating sleeve (122) and are inserted into or clamped with heat insulating washers (124), the heat insulating washers (124) are located on the left and right sides of the heat insulating sleeve (122), the left and right walls of the outer annular gear ring (13) are fixedly connected with a connecting plate (14) by bolts, and the left and right ends of the connecting rod (123) extend two heat insulating washers (124) and are installed in the corresponding connecting through holes of the connecting plate (14).

8. A fresh material micro-oxygen drying machine according to claim 1, characterized in that: A plurality of material discharging channels (109) are formed on the outer wall of the right part of the drying cylinder (10); a heat-insulating shell (3000) is provided on the outside of the drying cylinder (10), the drying cylinder (10) is in the heat-insulating shell (3000), the bottom surface of the heat-insulating shell (3000) is fixed on the top surface of the lower support frame (20), the bottom surface of the right part of the heat-insulating shell (3000) is connected to a downwardly extending lower hopper (3001), a main discharge port (3002) is formed at the bottom end of the lower hopper (3001), and the material discharging channels (109) correspond to the interior of the heat-insulating shell (3000) above the lower hopper (3001).

9. A fresh material micro-oxygen drying machine according to claim 8, characterized in that: A discharge conveyor rack (3003) is installed below the main discharge opening (3002), and the upper belt body of the conveyor belt of the discharge conveyor rack (3003) is located below and close to the main discharge opening (3002).

10. A fresh material micro-oxygen drying machine according to claim 9, characterized in that: The discharging conveying frame (3003) is a climbing belt conveyor.

11. A fresh material micro-oxygen drying machine according to claim 1, characterized in that: Two return air connecting pipes (92) are connected to the bottom plate of the condensing heat exchanger (90), the bottom ends of the two return air connecting pipes (92) are connected to the two outlets of the same lower connecting pipe (93), the middle part of the bottom wall plate of the lower connecting pipe (93) is connected to a liquid outlet (94) extending downward, the bottom of the liquid outlet (94) is connected to a drain valve (95), and the inlet of the lower connecting pipe (93) is connected to the outlet end of the return air pipe (50). The top plate of the condensing heat exchanger (90) is connected to two air outlets, and the two air outlets are connected to two connecting ports of a third three-way connecting pipe. Another connecting port of the third three-way connecting pipe is connected to one end of a three-way connector through a connecting pipe, and both ends of the three-way connector are connected to the air inlets of two blowers (190) of the drying main unit (1000).

Images