A device for collecting char formed by pyrolysis of biomass

Abstract

The present invention provides a device for collecting char formed by pyrolysis of biomass, comprising a grate rotatably arranged in a gasifier, a collecting bin, at least one first charcoal discharge knife, and at least one second charcoal discharge knife; the gasifier has a bottom wall and a side wall, a carrier is arranged on the grate, the carrier is arranged on the grate, a first gap is formed between the carrier and the side wall, and a second gap is formed between the carrier and the bottom wall; the collecting bin is fixed on the gasifier, a first charcoal discharge port is provided on the side wall, a second charcoal discharge port is provided on the bottom wall, the first charcoal discharge knife is fixed on the side wall and is located above the carrier, and the second charcoal discharge knife is fixed on the carrier and is located in the second gap; the first charcoal discharge knife acts on the charcoal accumulated on the carrier, and discharges the part of the charcoal from the first charcoal discharge port to the collecting bin; the second charcoal discharge knife acts on the charcoal falling from the first gap into the second gap, and discharges the part of the charcoal from the second charcoal discharge port to the collecting bin. The present invention can timely, quickly and thoroughly discharge and collect the charcoal generated by pyrolysis in the gasifier.

Description

Technical Field

[0001] The present invention relates to a device for collecting char formed by pyrolysis of biomass, and more specifically, to a char discharge device capable of completely discharging the char. Background Art

[0002] Biomass carbonization technology is a type of biomass thermochemical conversion technology. It is a process in which chopped or formed biomass raw materials are heated in an oxygen-limited or anaerobic environment to cause internal decomposition of molecules, thereby forming biochar, bio-oil and non-condensable gas products.

[0003] Biochar has the characteristics of wide source of raw materials, low production cost, ecological safety and pollution-free. It has been widely used in carbon fixation and emission reduction, water purification, heavy metal adsorption and soil improvement. It can provide solutions to global hot issues such as climate change, environmental pollution and soil function degradation to a certain extent. my country's biomass resources are very rich, widely distributed and sustainably supplied, so biomass carbonization technology can be promoted on a large scale.

[0004] Biochar needs to be pyrolyzed in a biomass gasifier. The pyrolyzed biochar will accumulate at the bottom of the gasifier and needs to be discharged in time to avoid spontaneous combustion caused by the accumulation of biochar. Summary of the invention

[0005] The present invention provides a device for collecting char formed by pyrolysis of biomass, so as to timely, quickly and thoroughly discharge and collect the char generated by pyrolysis in a gasifier.

[0006] In order to achieve the above-mentioned object, the present invention provides a device for collecting char formed by pyrolysis of biomass, the device comprising a grate rotatably arranged in a gasifier, a collection bin for receiving char, at least one first char discharge knife, and at least one second char discharge knife;

[0007] The gasifier has a bottom wall and a side wall, and a ring-shaped support is provided on the grate. The support is arranged at the outer periphery of the bottom of the grate, and there is a first gap between the support and the side wall in the horizontal direction, and a second gap between the support and the bottom wall in the vertical direction;

[0008] The collecting bin is fixed on the gasifier, the side wall is provided with a first charcoal outlet communicating with the collecting bin, the bottom wall is provided with a second charcoal outlet communicating with the collecting bin, the first charcoal outlet knife is fixed on the side wall and located above the carrier, and the second charcoal outlet knife is fixed on the carrier and located in the second gap;

[0009] The first charcoal discharge knife acts on the charcoal accumulated on the carrier to discharge the charcoal from the first charcoal discharge port into the collection bin;

[0010] The second carbon discharging knife acts on the carbon that falls from the first gap into the second gap, and discharges the carbon from the second carbon discharging port into the collecting bin.

[0011] In the above technical scheme of the present invention, the grate is arranged in the gasifier in a rotatable manner, and the relative rotation between the grate and the gasifier can form the effect of pushing out the biochar. However, due to the need for relative rotation between the grate and the gasifier, in order to ensure the stable performance of the rotation, there must be a gap between the two, and the biochar can pass through the gap to form an accumulation phenomenon, causing blockage, and even shutdown in severe cases. Based on this phenomenon, the present invention adopts a first charcoal discharge knife and a second charcoal discharge knife arranged up and down to discharge the biochar on the carrier and the biochar on the bottom wall respectively. This structural arrangement can, on the one hand, quickly and centrally discharge the biochar produced by pyrolysis, and on the other hand, it can avoid the phenomenon of biochar re-burning into slag caused by long-term accumulation of biochar, thereby ensuring the quality of the produced biochar.

[0012] Furthermore, the relative rotation between the first charcoal outlet knife and the carrier can discharge the main part of the biochar into the collection bin through the first charcoal outlet. The carrier is arranged at the bottom periphery of the grate and can directly receive the biochar formed by pyrolysis. The carrier and the grate rotate synchronously, so that the biochar fallen on the carrier is sent to the first charcoal outlet knife for discharge. In this process, a very small part of the biochar falls onto the bottom wall from the first gap between the carrier and the side wall.

[0013] Specifically, the bottom wall is fixed and it is necessary to discharge this part of the charcoal. The present invention provides a second charcoal outlet knife on the carrier (specifically the lower side of the carrier), and the second charcoal outlet knife is located in the second gap. With the synchronous rotation of the second charcoal outlet knife and the carrier, the charcoal on the bottom wall can be moved, and then the charcoal on the bottom wall can be discharged from the second charcoal outlet (located on the bottom wall) into the collection bin.

[0014] According to another specific embodiment of the present invention, the collecting bin is provided with an L-shaped notch portion, which includes a side portion connected to the first carbon outlet and a bottom portion connected to the second carbon outlet, the side portion is sealed to the side wall, and the bottom portion is sealed to the bottom wall.

[0015] According to another specific embodiment of the present invention, the first charcoal outlet knife has at least a guide portion inclined along a negative direction biased towards the grate rotation direction, where the negative direction of the rotation direction refers to the opposite direction of the tangential component of the grate rotation direction. More specifically, the guide portion is inclined so that the biomass charcoal in a rotating state (accumulated on the carrier) will flow toward the first charcoal outlet after contacting the guide portion until it falls into the collection bin.

[0016] Preferably, in the radial direction of the grate, the guide portion is arranged to cover the first charcoal outlet, so as to achieve the effect of quickly discharging the charcoal.

[0017] More preferably, the first carbon discharging knife further comprises a guiding portion extending from the guiding portion to the first carbon discharging port, so as to facilitate the complete discharge of carbon and avoid accumulation.

[0018] According to another specific embodiment of the present invention, a retaining ring structure is provided on the bottom wall, and an annular groove with a U-shaped longitudinal section is formed between part of the side wall, part of the bottom wall and the retaining ring structure, and the second carbon discharge knife is located in the annular groove.

[0019] In this solution, the retaining ring structure can prevent the biomass charcoal from flowing toward the rotating shaft of the grate on the one hand, and can quickly gather the biomass charcoal in the second gap on the other hand for quick discharge.

[0020] According to another specific embodiment of the present invention, a portion of the bottom wall forming the annular groove is inclined outward to form an inclined seat, and the second carbon discharge knife has a bottom edge matching the inclined seat.

[0021] According to another specific embodiment of the present invention, the device further includes a containing structure for anaerobic treatment, the containing structure is connected to the collecting bin, the containing structure is provided with a first sealing door and a second sealing door, the first sealing door is arranged at the bottom of the collecting bin to open or close the outlet of the collecting bin, and the second sealing door is arranged at the bottom of the containing structure.

[0022] According to another specific embodiment of the present invention, the first sealing door is a rotating door, which includes a top cover, a horizontal axis, a top arm and a power component. The top cover is arranged in the containing structure through the horizontal axis, and the top arm acts on the top cover to keep the top cover closing the outlet of the collecting bin, and the power component is used to change the position of the top arm to open the outlet of the collecting bin.

[0023] According to another specific embodiment of the present invention, the power component includes a cylinder, a mounting bracket, a rocker, and a rotating shaft. The cylinder is hinged on the mounting bracket, the rotating shaft is arranged on the mounting bracket and is parallel to the horizontal axis, one end of the top arm is fixed on the rotating shaft, the other end of the top arm is abutted against the top cover, one end of the rocker is hinged on the piston rod of the cylinder, and the other end of the rocker is fixed on the rotating shaft.

[0024] According to another specific embodiment of the present invention, the second sealing door is a horizontal sliding door, including a gate plate, a sliding rail seat, and a push-pull cylinder. The sliding rail seat is arranged at the exit of the containing structure, the gate plate is slidably arranged on the sliding rail seat, and the push-pull cylinder drives the gate plate to slide to open or close the exit of the containing structure.

[0025] According to another specific embodiment of the present invention, the device also includes a water vapor pipeline, which includes a first pipeline connected to the collection bin and a second pipeline connected to the containing structure, wherein the saturated water vapor pressure in the first pipeline is not less than the saturated water vapor pressure in the second pipeline.

[0026] The present invention has the following beneficial effects:

[0027] The device of the present invention can quickly discharge the biochar produced by the gasification furnace through the relative rotation between the first carbon discharge knife and the carrier, and can completely discharge the biochar produced in the gasification furnace through the relative rotation between the second carbon discharge knife and the bottom wall, thereby avoiding the re-ignition phenomenon caused by the accumulation of biochar and ensuring the quality of the biochar.

[0028] In addition, the collecting bin of the present invention is provided with an L-shaped notch portion to respectively receive the charcoal discharged from the first charcoal outlet and the second charcoal outlet, thereby simplifying the structure and facilitating the subsequent processing of the biomass charcoal.

[0029] In addition, the present invention provides reasonable shapes and structures of the first charcoal discharging knife and the second charcoal discharging knife, which facilitates the rapid discharge of the biochar and reduces the resistance during the discharge of the biochar.

[0030] In addition, the present invention is provided with a containing structure to provide space for fire extinguishing, cooling, and anaerobic discharge of biochar, thereby avoiding the re-ignition of biochar and improving the cooling effect of biochar.

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;

[0033] Figure 2 is a cross-sectional view of the device of the present invention;

[0034] Figure 3 yes Figure 2 Schematic diagram of section A-A;

[0035] Figure 4 is a schematic diagram showing the bottom of a gasifier according to the present invention;

[0036] Figure 5 is a schematic diagram showing a carrier and a collection bin of the present invention;

[0037] Figure 6 It is a schematic diagram of the rotating structure of the grate of the present invention;

[0038] Figure 7 is a schematic diagram of the accommodation structure of the present invention;

[0039] Figure 8This is a schematic diagram of the cooperation between the collection bin and the containing structure of the present invention;

[0040] Fig. 9 It is a schematic diagram of the carbon transport part of the present invention. DETAILED DESCRIPTION

[0041] The present invention provides a device for collecting charcoal formed by biomass pyrolysis, comprising a feeding part 10 for providing biomass raw materials, a gasifier 20 for providing a biomass pyrolysis site, a grate 30, a collecting bin 40 for receiving charcoal, a first charcoal discharge knife 50, a second charcoal discharge knife 60, a containing bin 70 (containing structure), a steam pipeline, and a charcoal transport part 80.

[0042] See also Figure 1 The feeding part 10 includes a feeding auger 11, a feeding hopper elevator 12, a feeding pipe 13, and a feeding bin 14. The biomass raw material is fed to the feeding auger 11, and through the feeding hopper elevator 12-feeding pipe 13-feeding bin 14-gasifier 20, the biomass raw material can be continuously supplied to the gasifier 20 for the pyrolysis process.

[0043] The gasifier 20 is used as the pyrolysis site. Figure 1 , Figure 2 The vertical gasifier shown in FIG. 2 is a vertical gasifier, and the grate 30 is rotatably arranged at the bottom of the gasifier 20 to provide the combustion gas required for pyrolysis, wherein, see Figure 6 The grate 30 is driven by the external ratchet structure 31 to achieve rotation. Accordingly, a water seal structure can be provided at the rotational cooperation position between the grate rotation pipe 32 and the gasification furnace 20 to achieve sealing.

[0044] The gasifier 20 is cylindrical in shape as a whole and has a relatively large volume. The gasifier 20 can be fixed by, for example, a support beam, and a plurality of hole structures 21 are provided on the gasifier 20 for observation, maintenance and other operations. The structure of the gasifier 20 here can be a gasifier 20 structure capable of pyrolysis, and other conventional functions will not be repeated here.

[0045] The present invention is designed for the carbon discharging part, which is described in detail in the following documents:

[0046] The gasifier 20 of the present invention has a bottom wall 22 and a side wall 23. A support 33 is provided at the bottom periphery of the grate 30. The char produced by pyrolysis slides downward and gathers on the support 33. Preferably, the support 33 is an annular structure in a horizontal plane to receive the char produced by pyrolysis to the maximum extent.

[0047] See also Figure 2 , Figure 3The collecting bin 40 is fixed on the gasification furnace 20, and a first charcoal outlet 24 connected to the collecting bin 40 is provided on the side wall 23, and a first charcoal outlet knife 50 is fixed at the first charcoal outlet 24, wherein the first charcoal outlet 24 is located above the carrier 33. During the synchronous rotation of the carrier 33 and the grate 30, the charcoal on the carrier 33 will be discharged into the collecting bin 40 under the action of the first charcoal outlet knife 50.

[0048] The present invention provides a plurality of collecting bins 40, for example four, and also provides four first charcoal discharge knives 50 corresponding to the positions of the collecting bins 40, so as to collect the charcoal on the carrier 33 in time and avoid the re-ignition of the charcoal generated by pyrolysis.

[0049] See again Figure 3 In order to quickly discharge the charcoal accumulated on the carrier 33 into the collecting bin 40, the first charcoal discharge knife 50 has a guide portion 51 inclined in the negative direction biased towards the rotation direction of the grate 30. The inclined guide portion 51 allows the charcoal in a rotating state (accumulated on the carrier 33) to flow toward the first charcoal discharge port 24 after contacting the guide portion until it falls into the collecting bin 40.

[0050] The first carbon discharging knife 50 preferably further includes a guide portion 52 extending from the guide portion 51 to the first carbon discharging port 24 , so as to facilitate the carbon to be directly discharged into the collecting bin 40 , thereby completely avoiding the phenomenon of accumulation.

[0051] The arrangement structure of the first carbon discharge knife 50 realizes the discharge of the main part of the carbon. Based on the design mode that the larger grate 30 of the overall structure needs to rotate, in the horizontal direction, a first gap c1 is formed between the carrier 33 and the side wall 23. The carbon particles produced by pyrolysis are relatively small and can be accumulated in the first gap c1, which needs to be discharged in time. Otherwise, it is easy to cause the grate 30 to rotate unstably, the carbon to re-ignite uncontrollably, etc. Therefore, the carrier 33 in the present invention is arranged higher than the bottom wall 22, and a second gap c2 is formed between the carrier 33 and the bottom wall 22, and a second carbon discharge knife 60 is arranged to discharge the carbon in the second gap c2.

[0052] See also Figure 4 , Figure 5 A second carbon outlet 25 connected to the collecting bin 40 is provided on the bottom wall 22, and a second carbon outlet knife 60 is fixed on the carrier 33 and is located in the second gap c2. The second carbon outlet knife 60 acts on the carbon that falls from the first gap c1 into the second gap c2, and discharges this part of the carbon from the second carbon outlet 25 into the collecting bin 40.

[0053] In order to collect the charcoal discharged from the first charcoal outlet 24 and the second charcoal outlet 25 at the same time, the collection bin 40 is provided with an L-shaped notch 41, the notch 41 includes a side edge 411 and a bottom edge 412, the side edge 411 is sealed to the side wall 23, and the bottom edge 412 is sealed to the bottom wall 22, see again Figure 5 The char discharged from the first char outlet 24 falls into the collection bin 40 through the side portion 411 , and the char discharged from the second char outlet 25 falls into the collection bin 40 through the bottom portion 412 , and is collected and extinguished in a centralized manner.

[0054] Furthermore, in order to speed up the discharge of part of the charcoal falling from the first gap c1 into the second gap c2 and avoid the accumulation and re-ignition of charcoal, on the one hand, a larger number of second charcoal discharge knives 60 (e.g., eight) are provided to quickly discharge the charcoal in the second gap c2, and on the other hand, the accommodation space of the second gap c2 is reduced to quickly gather and discharge the charcoal falling from the first gap c1 into the second gap c2, specifically:

[0055] A retaining ring structure 26 is provided on the bottom wall 22, and an annular groove 27 with a U-shaped longitudinal cross-section is formed between part of the side wall 23, part of the bottom wall 22 and the retaining ring structure 26. The second carbon discharge knife 60 is located in the annular groove 27 to prevent the carbon that falls on the bottom wall 22 from being too dispersed, thereby facilitating the discharge of the carbon.

[0056] Furthermore, part of the bottom wall 22 forming the annular groove 27 can be tilted outward to form an inclined seat, and the second carbon discharge knife 60 has a bottom edge matching the inclined seat, which can effectively prevent the carbon falling into the second gap c2 from gathering toward the retaining ring structure.

[0057] The present invention adopts multiple first carbon discharging knives 50 and multiple second carbon discharging knives 60 arranged vertically to respectively discharge the carbon on the carrier 33 and the carbon on the bottom wall 22. This structural arrangement can, on the one hand, quickly and centrally discharge the carbon produced by pyrolysis, and on the other hand, can avoid the phenomenon of carbon re-igniting into slag caused by long-term accumulation of carbon, thereby ensuring the quality of the produced biomass carbon.

[0058] When the charcoal in the collecting bin 40 is discharged, an anaerobic treatment is performed. The present invention provides a containing bin 70, which is connected to the collecting bin 40. The containing bin 70 is provided with a first sealing door 71 and a second sealing door 72. The first sealing door 71 is provided at the bottom of the collecting bin 40 to open or close the outlet of the collecting bin 40, and the second sealing door 72 is provided at the bottom of the containing bin 70 to discharge the charcoal when the first sealing door 71 is closed, so as to prevent external oxygen from entering the collecting bin 40 through the discharge path.

[0059] See also Figure 7 , Figure 8The first sealing door 71 includes a top cover 711, a horizontal shaft 712, a top arm 713 and a power component. The top cover 711 is arranged in the accommodating bin 70 through the horizontal shaft 712. The top arm 713 acts on the top cover 711 (such as the contact support shown in the figure) to keep the top cover 711 closing the outlet of the collecting bin 40. The power component is used to change the position of the top arm 713 to open the outlet of the collecting bin 40.

[0060] Among them, the power component adopts a pneumatic structure, including a cylinder 714, a mounting bracket 715, a rocker 716, and a rotating shaft 717. The middle part of the cylinder body of the cylinder 714 is hinged on the mounting bracket 715, the rotating shaft 717 is arranged on the mounting bracket 715 and is parallel to the horizontal axis 712, one end of the top arm 713 is fixed on the rotating shaft 717, and the other end of the top arm 713 is abutted against the top cover 711, one end of the rocker 716 is hinged on the piston rod of the cylinder 714, and the other end of the rocker 716 is fixed on the rotating shaft 717.

[0061] The second sealing door 72 is a horizontal sliding door, including a gate plate 721, a slide rail seat 722, and a push-pull cylinder 723. The slide rail seat 722 is arranged at the exit of the storage bin 70, and the gate plate 721 is slidably arranged on the slide rail seat 722. The push-pull cylinder 723 drives the gate plate 721 to slide to open or close the exit of the storage bin 70.

[0062] In the present invention, charcoal is extinguished and cooled in the collecting bin 40 and the containing bin 70. The water vapor pipeline includes a first pipeline and a second pipeline. Saturated water vapor of 7 kPa to 10 kPa is introduced into the collecting bin 40 through the first pipeline to quickly extinguish and cool the charcoal. Saturated water vapor of 5 kPa to 8 kPa is introduced into the containing bin 70 through the second pipeline to quickly extinguish and cool the charcoal again.

[0063] Among them, the saturated water vapor pressure in the first pipeline is preferably not less than the saturated water vapor pressure in the second pipeline, that is, the saturated water vapor pressure entering the collecting bin 40 is not less than the saturated water vapor pressure entering the containing bin 70. For example, the saturated water vapor pressure entering the collecting bin 40 is 8 kPa, and the saturated water vapor pressure entering the containing bin 70 is 6 kPa. The advantage of such a setting is that when the first sealing door 71 is opened, the pressure in the collecting bin 40 is greater than the pressure in the containing bin 70, which prevents the gas in the containing bin 70 from diffusing into the collecting bin 40, accelerates the discharge process of the charcoal in the collecting bin 40, and completely isolates the oxygen in the containing bin 70 from diffusing into the collecting bin 40 during the opening process of the first sealing door 71.

[0064] The two-stage structure of the collecting chamber 40 and the containing chamber 70 of the present invention can completely avoid the interference of oxygen, so as to facilitate the extinguishing and cooling of the charcoal.

[0065] The charcoal discharged from the storage bin 70 can be transported at an external normal temperature, collected by a charcoal transport section 80, and finally processed centrally, wherein the charcoal transport section 80 includes a charcoal transport auger 81, a charcoal bucket elevator 82, and a dry charcoal bin 83. The charcoal discharged from the storage bin 70 is transported by the charcoal transport auger 81, the charcoal bucket elevator 82, and the dry charcoal bin 83, thus completing the centralized collection of the charcoal.

[0066] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the scope of the present invention. Any person skilled in the art can make some improvements without departing from the scope of the present invention, that is, all equivalent improvements made according to the present invention should be covered by the scope of the present invention.

Claims

1. A device for collecting char formed by pyrolysis of biomass, characterized in that: The device comprises: rotating a grate disposed in the gasifier; a collection bin for receiving the charcoal; at least one first carbon discharge knife; and at least one second carbon discharge knife; The gasifier has a bottom wall and a side wall, and the grate is provided with an annular support, which is arranged at the outer periphery of the bottom of the grate, and in the horizontal direction, there is a first gap between the support and the side wall, and in the vertical direction, there is a second gap between the support and the bottom wall; The collecting bin is fixed on the gasifier, the side wall is provided with a first carbon outlet communicating with the collecting bin, the bottom wall is provided with a second carbon outlet communicating with the collecting bin, the first carbon outlet knife is fixed on the side wall and is located above the carrier, the second carbon outlet knife is fixed on the carrier and is located in the second gap; the collecting bin is provided with an L-shaped notch, the notch includes a side edge communicating with the first carbon outlet, and a bottom edge communicating with the second carbon outlet, the side edge is sealed to the side wall, and the bottom edge is sealed to the bottom wall; The first charcoal discharge knife acts on the charcoal accumulated on the carrier to discharge the charcoal from the first charcoal discharge port into the collection bin; The bottom wall is provided with a retaining ring structure, and an annular groove with a U-shaped longitudinal cross-section is formed between part of the side wall, part of the bottom wall and the retaining ring structure, and the second carbon outlet knife is located in the annular groove; the second carbon outlet knife acts on the carbon that falls from the first gap into the second gap, and discharges this part of the carbon from the second carbon outlet port into the collection bin.

2. The device according to claim 1, characterized in that The first coal discharging knife has at least a guide portion inclined in a negative direction biased toward the rotation direction of the grate.

3. The device according to claim 1, characterized in that A portion of the bottom wall forming the annular groove is inclined outward to form an inclined seat, and the second carbon discharge knife has a bottom edge matching the inclined seat.

4. The device according to claim 1, characterized in that The device further includes a containing structure for anaerobic treatment, which is connected to the collecting bin and is provided with a first sealing door and a second sealing door. The first sealing door is arranged at the bottom of the collecting bin to open or close the outlet of the collecting bin, and the second sealing door is arranged at the bottom of the containing structure.

5. The device according to claim 4, characterized in that The first sealing door is a rotating door, which includes a top cover, a horizontal axis, a top arm and a power component. The top cover is arranged in the containing structure through the horizontal axis. The top arm acts on the top cover to keep the top cover closing the outlet of the collecting bin. The power component is used to change the position of the top arm to open the outlet of the collecting bin.

6. The device according to claim 5, characterized in that The power component includes a cylinder, a mounting bracket, a rocker arm, and a rotating shaft. The cylinder body of the cylinder is hinged on the mounting bracket, the rotating shaft is parallel to the horizontal axis, one end of the top arm is fixed on the rotating shaft, the other end of the top arm is abutted against the top cover, one end of the rocker arm is hinged on the piston rod of the cylinder, and the other end of the rocker arm is fixed on the rotating shaft.

7. The device according to claim 4, characterized in that The second sealing door is a horizontal sliding door, including a gate plate, a slide rail seat, and a push-pull cylinder. The slide rail seat is arranged at the exit of the containing structure, the gate plate is slidably arranged on the slide rail seat, and the push-pull cylinder drives the gate plate to slide to open or close the exit of the containing structure.

8. The device according to claim 4, characterized in that The device also includes a water vapor pipeline, which includes a first pipeline connected to the collection bin and a second pipeline connected to the containing structure, wherein the saturated water vapor pressure in the first pipeline is not less than the saturated water vapor pressure in the second pipeline.

Images