CN219546862U - Dirty dual energy mummification circulation production line of plant's excrement - Google Patents

Abstract

The utility model discloses a dual-energy drying and circulating production line for waste in a farm, which comprises a drying box, a slitter, a feeding hopper, a discharging conveying device and a return conveying device, wherein the slitter is fixed at a feed inlet of the drying box; the feeding hopper is fixed above the slitter; the discharge hopper is fixed at a discharge port of the drying box; the discharging conveying device is connected with the discharging hopper; the return material conveying device is connected with the discharge hopper and the feed hopper. According to the utility model, the dried material and the non-dried wet material are mixed to form the material to be dried, so that the shape of the excrement is changed from the original dense and airtight pasty shape like liquid into a porous shape, the porosity of the excrement is increased, and when the wet material is dried, wind can be blown into the excrement, so that the wind area of the excrement is increased, the excrement can be dried quickly, and the water content can be reduced quickly without increasing power.

Description

Dirty dual energy mummification circulation production line of plant's excrement

Technical Field

The utility model relates to the technical field of waste treatment of farms, in particular to a dual-energy drying and circulating production line for waste of farms.

Background

The environmental protection problem of the farm is increasingly serious, and the manure generated at the rear end of the sewage treatment process becomes an important treatment object in the environment-friendly area of the farm. At present, equipment for producing the excrement of the farm mainly comprises a spiral shell stacking machine and a solid-liquid separator, the water content of the produced products is variable from 65% to 90%, the water content of the produced products is wet materials, and the treatment mode of the produced products is mainly landfill or external transportation. At present, equipment for drying treatment for further controlling the water content of the output below 40% is rarely adopted in livestock farms.

Even if the drying treatment is performed by a mode of combining solar energy and air energy in the Chinese patent No. 107014160A or No. 101936644A, the water content can be controlled to be below 40%, but a large amount of energy is required, the treatment cost is too high, and the method is not suitable for drying the manure in the farm, and is characterized in that when the water content of the manure in the farm is too high, the manure is in a sticky pasty shape, the wind area is very small, the interior of the manure can not be dried basically, and the water content is difficult to reduce even if the drying power is increased.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a dual-energy drying circulation production line for the manure of a farm, wherein most of farms are in suburbs or mountainous areas, and the materials after drying and decrement cannot be transported out of the farm in time. According to the utility model, the dried material and the non-dried wet material are mixed to form the material to be dried, so that the shape of the excrement is changed from the original dense and airtight pasty shape like liquid into a porous shape, the porosity of the excrement is increased, and when the wet material is dried, wind can be blown into the excrement, so that the wind area of the excrement is increased, the excrement can be dried quickly, the water content is reduced quickly without increasing power, the drying time is shortened, and the drying energy consumption is reduced.

The technical problems to be solved by the utility model are realized by the following technical scheme:

in order to solve the technical problems, the utility model provides a double-energy drying and circulating production line for the manure of a farm, which comprises a drying box, a slitter, a feeding hopper, a discharging conveying device and a return material conveying device, wherein the slitter is fixed at a feed inlet of the drying box; the feeding hopper is fixed above the slitter; the discharge hopper is fixed at a discharge port of the drying box; the discharging conveying device is connected with the discharging hopper; the return material conveying device is connected with the discharge hopper and the feed hopper.

Further, the discharging conveying device comprises a discharging screw conveyor connected with the discharging hopper and a discharging scraper conveyor connected with the discharging screw conveyor, the returning material conveying device comprises a returning material screw conveyor connected with the discharging screw conveyor and a returning material scraper conveyor connected with the returning material screw conveyor, and the other end of the returning material scraper conveyor is connected with the feeding hopper.

Further, a control valve is arranged on the discharging screw conveyor, and the discharging screw conveyor is respectively connected with the discharging scraper conveyor and the return screw conveyor through the control valve.

Further, the stoving case is closed stoving case, the stoving case includes the stoving district and the heat supply dehumidification district that separate through the baffle, be provided with at least one deck material carrying assembly line in the stoving district, every layer carry the material assembly line parallel to each other, adjacent two-layer carry the setting of staggering each other of material assembly line, carry the conveyer belt on the material assembly line to be the guipure, be located the below of carrying the material assembly line the bottom of stoving case is provided with the deashing aggregate unit, the deashing aggregate unit includes the swash plate that two slopes set up and locates two the deashing screw device in the middle of the swash plate, carry the discharge end of material assembly line with the discharge end of deashing screw device all with the discharge hopper is connected, the outside of swash plate is pasted and is had the heat preservation cotton.

Further, an air inlet is formed in the partition plate at the ash removal and aggregation device, a closed type heat circulation device is arranged in the heat supply and dehumidification area, the closed type heat circulation device comprises a high-pressure fan, a heating device, a heat regenerator, a primary condensation device and a secondary condensation device, the high-pressure fan is arranged at the bottom of the drying box and is connected with the air inlet, the heating device is arranged above the high-pressure fan, the heat regenerator is arranged above the heating device, the secondary condensation device is arranged on a return air path of the heat regenerator, the primary condensation device is arranged above the heat regenerator, a circulation air port is formed in the top of the partition plate in the drying box, and a filter is arranged on the circulation air port.

Further, a cooling tower and a steam generating device are arranged on the outer side of the drying box, the cooling tower is respectively connected with the primary condensing device and the secondary condensing device, and the steam generating device is connected with the heating device.

The utility model has the following beneficial effects:

most farms are in suburbs or mountains, and the materials subjected to drying and reduction often cannot be transported out of the farms in time. According to the utility model, the dried material and the non-dried wet material are mixed to form the material to be dried, so that the shape of the excrement is changed from the original dense and airtight pasty shape like liquid into a porous shape, the porosity of the excrement is increased, and when the wet material is dried, wind can be blown into the excrement, so that the wind area of the excrement is increased, the excrement can be dried quickly, the water content is reduced quickly without increasing power, the drying time is shortened, and the drying energy consumption is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a livestock farm manure dual-energy drying cycle production line.

Fig. 2 is a front view of the hidden portion of fig. 1.

Fig. 3 is a schematic view of the internal structure of the drying room.

Fig. 4 is a schematic view of another angle of fig. 1.

Fig. 5 is a schematic structural view of the hidden insulation board of fig. 4.

Detailed Description

The present utility model is described in detail below with reference to the drawings and the embodiments, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model provides a method for drying manure in a farm, which comprises the following steps:

step 1: extruding the material to be dried into strip-shaped material;

step 2: drying the strip-shaped material to form a dried material;

step 3: taking out the dried materials after partial drying and the wet materials which are not dried, and mixing the dried materials and the wet materials to be dried;

step 4: repeating steps 1 to 3.

Most farms are in suburbs or mountains, and the materials subjected to drying and reduction often cannot be transported out of the farms in time. According to the utility model, the dried material and the non-dried wet material are mixed to form the material to be dried, so that the shape of the excrement is changed from the original dense and airtight pasty shape like liquid into a porous shape, the porosity of the excrement is increased, and when the wet material is dried, wind can be blown into the excrement, so that the wind area of the excrement is increased, the excrement can be dried quickly, the water content is reduced quickly without increasing power, the drying time is shortened, and the drying energy consumption is reduced.

More preferably, the solid-liquid separator and the filter press of the sewage line of the farm only work for 8 hours each day, but the method can work continuously for 24 hours, and the problem of discontinuous production exists, so that the excessive manure can be buffered for a period of time first and then dried by the method.

Further, the step 2 specifically includes the following steps performed simultaneously:

step 2.1: feeding the strip-shaped materials into a material loading assembly line in a closed drying room;

step 2.2: drying the strip-shaped materials on a material carrying assembly line through a closed thermal circulation system;

step 2.3: collecting dust falling on a material carrying assembly line and/or materials which are not completely treated;

step 2.4: and conveying the dried and collected materials to a discharging end to form a dried material.

Because of adopting a closed drying room and a closed heat circulation system, the whole device adopts a fully-closed design, hot air circulates in the device, no tail gas overflows, and the whole treatment process has high environmental protection degree.

Further, the step 2.2 specifically includes the following steps, which are performed cyclically and simultaneously:

step 2.21: heating the low-temperature low-humidity air into ultrahigh-temperature low-humidity air;

step 2.22: sending the ultrahigh temperature low humidity air into a drying room;

step 2.23: the strip-shaped materials on the material loading assembly line are dried by the ultra-high temperature low-humidity air to form high-temperature high-humidity air;

step 2.24: filtering the high-temperature and high-humidity air;

step 2.25: primary condensing the filtered high-temperature and high-humidity air to form medium-temperature and medium-humidity air, and discharging condensed water through a water pipe;

step 2.26: cooling the medium-temperature medium-humidity air through heat recovery to form low-temperature medium-humidity air;

step 2.27: performing secondary condensation on the low-temperature medium-humidity air to form ultralow-temperature low-humidity air, and discharging condensed water through a water pipe;

step 2.28: the ultralow temperature low humidity air is heated again through heat recovery to form the low temperature low humidity air.

As the primary condensation is added at the front end of the back heating, the high-temperature and high-humidity gas can be cooled more quickly as a primary cooling process, and the dew point temperature can be reached more quickly when the gas reaches the secondary condensation, so that the precipitation efficiency of condensed water is improved.

The filter can filter dust brought by hot air and impurities in a drying room, an air channel of a closed type heat circulation system is prevented from being blocked, moisture of materials is discharged in a condensed water form through primary condensation and secondary condensation, and due to the fact that the closed type heat circulation system is provided with a heat recovery function, redundant heat in air after primary condensation can be effectively utilized, the temperature of air during secondary condensation is properly reduced, power consumption during secondary condensation is reduced, and finally operation cost is reduced.

Further, the closed heat circulation system comprises an air energy heat pump system and a biogas energy heat exchange system. The air energy heat pump system and the biogas energy heat exchange system can be controlled independently and can be started simultaneously. The farm has more biological waste, can produce a large amount of marsh gas energy sources with lower cost, can reduce the investment of the air energy heat pump system due to the holding of marsh gas energy, and can reduce the running cost and the investment cost. The heat supply form of the biogas energy heat exchange system can be hot steam or hot water formed by heating.

Example 1

Referring to fig. 1 and 2, the utility model provides a farm manure dual-energy drying and circulating production line, which comprises a drying box 1, a slitter 2, a feeding hopper 3, a discharging hopper 4, a discharging conveying device 5 and a return conveying device 6, wherein the slitter 2 is fixed at a feed inlet of the drying box 1; the feeding hopper 3 is fixed above the slitter 2; the discharging hopper 4 is fixed at a discharging hole of the drying box 1; the discharging and conveying device 5 is connected with the discharging hopper 4; the return material conveying device 6 is connected with the discharge hopper 4 and the feeding hopper 3. In this embodiment, the front end of the feeding hopper 3 may be additionally provided with a buffer hopper 7, and since the solid-liquid separator and the filter press of the sewage line of the farm only work for 8 hours each day, the device can continuously work for 24 hours, and the problem of discontinuous production exists, the excessive excrement can be buffered for a period of time through the buffer hopper 7, and then dried through the device. At the beginning, certain materials are cached through the cache hopper 7, then the materials in the cache hopper 7 are lifted to the feeding hopper 3, the feeding hopper 3 conveys the materials to the slitter 2, the materials are uniformly extruded into strips through the slitter 2 and then are conveyed into the drying box 1 for drying, the contact area between the extruded materials and air is increased, the porosity between the materials is increased, hot air is facilitated to penetrate through the materials, and moisture of the materials is taken away. The dry material after the stoving partly is sent out through ejection of compact conveyor 5, and another part returns to into hopper 3 through return material conveyor 6, thereby make dry material can mix with the moist material of not drying, can make dirty shape of excrement change into poroid by originally ventilative thick pasty like liquid, thereby increase the dirty porosity of excrement, when drying, wind can blow into the dirty inside of excrement, thereby increased the dirty windward area of excrement, make the dirty inside of excrement can obtain the stoving fast, need not to increase the power and also can reduce the moisture content fast, thereby shorten stoving time, reduce the stoving energy consumption.

Further, the drying box 1 is provided with an aluminum profile frame 11, the outer surface of the aluminum profile frame 11 is provided with an insulation board 12, the insulation board 12 is a double-sided stainless steel polyurethane sandwich board, in this embodiment, the thickness of the insulation board 12 is 50mm, and in other embodiments, the thickness of the insulation board 12 can be changed along with working conditions. The aluminum profile frame 11 adopts standard bridge-cut-off aluminum, has unified standard, lighter weight and convenient and quick installation.

Example 2

Referring to fig. 1 and 2, the difference between this embodiment and embodiment 1 is that in this embodiment, the discharging conveyor 5 includes a discharging screw conveyor 51 connected to the discharging hopper 4 and a discharging scraper conveyor 52 connected to the discharging screw conveyor 51, the return conveyor 6 includes a return screw conveyor 61 connected to the discharging screw conveyor 51 and a return scraper conveyor 62 connected to the return screw conveyor 61, and the other end of the return scraper conveyor 62 is connected to the feeding hopper 3. When direct discharging is needed, the valve is opened, and the materials are discharged through the discharging screw conveyor 51 and the discharging scraper conveyor 52; when the dried materials are required to be conveyed back to the feeding hopper 3, the valve is closed, the dried materials are conveyed to the return material screw conveyor 61 through the discharge screw conveyor 51, the return material screw conveyor 61 conveys the dried materials to the head end of the drying box 1, and then the return material scraper conveyor 62 lifts the dried materials to the feeding hopper 3.

Example 3

Referring to fig. 1 and 2, the difference between the present embodiment and embodiment 2 is that in the present embodiment, a control valve 53 is disposed on the discharging screw conveyor 51, and the discharging screw conveyor 51 is connected to the discharging scraper conveyor 52 and the return screw conveyor 61 through the control valve 53. The amounts supplied to the discharge scraper conveyor 52 and the return screw conveyor 61 when the discharge screw conveyor 51 discharges are controlled by the control valve 53. When direct discharging is needed, the valve of the control valve 53 is opened, and the material is conveyed to the discharging scraper conveyor 52 for discharging through the discharging screw conveyor 51; when the dried dry materials are required to be conveyed back to the feeding hopper 3, the valve of the control valve 53 is closed, and the dry materials are lifted to the feeding hopper 3 through the return material screw conveyor 61 and the return material scraper conveyor 62.

Referring to fig. 1 to 3, further, the drying box 1 is a closed drying box 1, the drying box 1 includes a material drying area 100 and a heat and moisture supplying area 200 separated by a partition 8, at least one layer of material carrying pipelines 101 are disposed in the material drying area 100, each layer of material carrying pipelines 101 is driven by a separate gear motor, each layer of material carrying pipelines 101 are parallel to each other, two adjacent layers of material carrying pipelines 101 are staggered, in this embodiment, the material carrying pipelines 101 have three layers, the end of the first layer of material carrying pipelines 101 can enable materials to fall to the front end of the second layer of material carrying pipelines 101, the end of the second layer of material carrying pipelines 101 can enable materials to fall to the front end of the third layer of material carrying pipelines 101, and so on, in other embodiments, if the material carrying pipelines 101 have multiple layers, the device can enable materials to fall to the front end of the next-layer carrying assembly line 101 at the tail end of the last-layer carrying assembly line 101, a conveyor belt on the carrying assembly line 101 is a mesh belt, the mesh belt can increase ventilation property, the materials can be quickly dried, a dust removing and collecting device is arranged at the bottom of the drying box 1 below the carrying assembly line 101, the dust removing and collecting device comprises two inclined plates 102 which are obliquely arranged and a dust removing screw 103 which is arranged between the two inclined plates 102, fallen dust and/or incompletely processed materials are concentrated to the dust removing screw 103 through the inclined plates 102 which are obliquely arranged, the discharge end of the carrying assembly line 101 and the discharge end of the dust removing screw 103 are both connected with the discharge hopper 4 and discharged to the discharge hopper 4 through the dust removing screw 103, thermal insulation cotton is adhered to the outer side of the inclined plates 102, to improve the thermal insulation performance at the swash plate 102.

The ash removal aggregate device can collect the materials outside the material carrying system in a centralized way, so that the whole drying room is clear in function, simple and elegant, automatic control is realized, and the working difficulty of ash removal is reduced. Meanwhile, the influence of excessive dust on electrical elements is avoided, the stable operation of the whole equipment is ensured, and the whole service life of the equipment is prolonged.

Further, an air inlet is formed in the partition plate 8 at the ash removal and collection device, the heat supply and dehumidification area 200 is provided with a closed heat circulation device, the closed heat circulation device comprises a high-pressure fan 201, a heating device 202, a heat regenerator 203, a primary condensation device 204 and a secondary condensation device 205, the high-pressure fan 201 is arranged at the bottom of the drying box 1 and is connected with the air inlet, the heating device 202 is arranged above the high-pressure fan 201, the heat regenerator 203 is arranged above the heating device 202, the secondary condensation device 205 is arranged on a return air path of the heat regenerator 203, the primary condensation device 204 is arranged above the heat regenerator 203, a circulation air inlet is formed in the top of the partition plate 8 in the drying box 1, and a filter 206 is arranged on the circulation air inlet. The heating device 202 heats low-temperature low-humidity air into ultra-high-temperature low-humidity air, the high-pressure fan 201 sends the ultra-high-temperature low-humidity air into a drying room, the ultra-high-temperature low-humidity air dries strip materials on the material carrying pipeline 101 to form high-temperature high-humidity air, the filter 206 filters the high-temperature high-humidity air, the filtered high-temperature high-humidity air is subjected to primary condensation through the primary condensing device 204 to form medium-temperature medium-humidity air, condensed water is discharged through a water pipe, the medium-temperature medium-humidity air is cooled through heat recovery through the heat regenerator 203 to form low-temperature medium-humidity air, the low-temperature medium-humidity air is subjected to secondary condensation through the secondary condensing device 205 to form ultra-low-temperature low-humidity air, and the condensed water is discharged through the water pipe, and the ultra-low-temperature low-humidity air is subjected to heat recovery and heating through the heat regenerator 203 again to form hot air circulation. The filter 206 can filter dust brought by hot air and impurities in a drying room to avoid blocking an air channel of the closed type heat circulation device, water of materials is discharged in a condensed water form through the primary condensation device 204 and the secondary condensation device 205, and condensed water is discharged through a water pipe and is sent to a sewage tank for treatment. Because the closed heat cycle device is provided with a heat recovery function, redundant heat in the air passing through the primary condensation device 204 can be effectively utilized, the temperature of wind passing through the secondary condensation device 205 is properly reduced, the power consumption of the secondary condensation device 205 is reduced, and finally the operation cost is reduced.

An air inlet is formed in the partition plate 8 at the ash removal and aggregation device, the high-pressure fan 201 is arranged at the bottom of the drying box 1 and is connected with the air inlet, so that hot air is more concentrated, and can be directly guided to the lower part of the material carrying assembly line 101 instead of expanding and dispersing in the ash removal area at the bottom, so that partial heat is prevented from being lost when the air reaches the material carrying assembly line 101, and the energy utilization efficiency is improved. The hot air is completely conveyed to the ash-cleaning aggregate device and then penetrates through the material loading system from bottom to top.

Both the primary condensing unit 204 and the secondary condensing unit 205 are provided with humidity sensors and temperature sensors, which are controlled by a microcomputer system to achieve stable inlet air temperature and outlet air temperature.

Referring to fig. 1 to 4, further, a cooling tower 9 and a steam generator 10 are disposed on the outside of the drying box 1, the cooling tower 9 is respectively connected to the primary condensing device 204 and the secondary condensing device 205, the cooling tower 9 is used for cooling, the steam generator 10 is connected to the heating device 202, and the steam generator 10 is used for heating.

Referring to fig. 1 to 5, further, the closed heat circulation device includes an air-source heat pump device 300 and a biogas-source heat exchange device 400. The air-source heat pump device 300 and the biogas-source heat exchange device 400 can be independently controlled or can be simultaneously started. The farm has more biological waste, can produce a large amount of marsh gas energy sources with lower cost, can reduce the investment of the air energy heat pump device 300 due to the holding of marsh gas energy, and can reduce the operation cost and the investment cost. The whole device can run fully automatically, the running speed of the material carrying assembly line 101 can be adjusted at will according to the actual use situation by adopting a PLC control system for control, and all motors are independently controlled by the frequency converter.

The foregoing examples merely illustrate embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model, but rather as equivalent alternatives or equivalent variations, all fall within the scope of the utility model.

Claims (7)

1. Dirty dual energy desiccation circulation production line of plant's excrement, its characterized in that includes:

a drying box;

the slitter is fixed at the feed inlet of the drying box;

the feeding hopper is fixed above the slitter;

the discharging hopper is fixed at a discharging hole of the drying box;

the discharging and conveying device is connected with the discharging hopper;

and the return material conveying device is connected with the discharge hopper and the feed hopper.

2. The farm manure dual-energy drying and circulating production line according to claim 1, wherein the discharge conveying device comprises a discharge screw conveyor connected with a discharge hopper and a discharge scraper conveyor connected with the discharge screw conveyor, the return material conveying device comprises a return material screw conveyor connected with the discharge screw conveyor and a return material scraper conveyor connected with the return material screw conveyor, and the other end of the return material scraper conveyor is connected with the feeding hopper.

3. The farm manure dual-energy drying and circulating production line according to claim 2, wherein a control valve is arranged on the discharge screw conveyor, and the discharge screw conveyor is respectively connected with the discharge scraper conveyor and the return screw conveyor through the control valve.

4. The farm manure dual-energy drying and circulating production line according to claim 1, wherein the drying box is a closed drying box, the drying box comprises a material drying area and a heat supply and dehumidification area which are separated by a partition plate, at least one layer of material carrying assembly lines are arranged in the material drying area, each layer of material carrying assembly lines are parallel to each other, two adjacent layers of material carrying assembly lines are staggered with each other, a conveyor belt on the material carrying assembly lines is a mesh belt, an ash removal and collection device is arranged at the bottom of the drying box below the material carrying assembly lines, the ash removal and collection device comprises two inclined plates which are obliquely arranged and an ash removal spiral device which is arranged between the two inclined plates, the discharge end of the material carrying assembly lines and the discharge end of the ash removal spiral device are connected with the discharge hopper, and heat preservation cotton is adhered to the outer side of the inclined plates.

5. The farm manure dual-energy drying and circulating production line according to claim 4, wherein an air inlet is formed in the partition plate at the ash removal and collection device, the heat supply and dehumidification area is provided with a closed heat circulation device, the closed heat circulation device comprises a high-pressure fan, a heating device, a heat regenerator, a primary condensation device and a secondary condensation device, the high-pressure fan is arranged at the bottom of the drying box and is connected with the air inlet, the heating device is arranged above the high-pressure fan, the heat regenerator is arranged above the heating device, the secondary condensation device is arranged on a return air path of the heat regenerator, the primary condensation device is arranged above the heat regenerator, a circulating air inlet is formed in the top of the partition plate in the drying box, and a filter is arranged on the circulating air inlet.

6. The farm manure dual-energy drying and circulating production line according to claim 5, wherein a cooling tower and a steam generating device are arranged on the outer side of the drying box, the cooling tower is respectively connected with the primary condensing device and the secondary condensing device, and the steam generating device is connected with the heating device.

7. The farm manure dual-energy drying cycle production line according to claim 5, wherein the closed thermal cycle device comprises an air energy heat pump device and a biogas energy heat exchange device.