Wet wood chip drying system and wet wood chip treatment system

Abstract

A wet wood chip drying system and a wet wood chip processing system, the wet wood chip drying system comprising: a feed screw for conveying wet wood chips to a belt dryer; the belt dryer comprises two moisture detection sensors, a conveying belt and a drying device, the two moisture detection sensors are arranged at the feeding end and the discharging end of the belt dryer respectively, the conveying belt is used for conveying wet wood chips, and the drying device is used for heating and drying the wet wood chips on the conveying belt; and the controller is connected to the moisture detection sensor, the conveyor belt and the drying device. The controller detects the humidity of the wet wood chips fed into the belt dryer through the moisture detection sensor at the feeding end of the belt dryer, detects the dryness of the dried wood chips through the moisture detection sensor at the discharging end of the belt dryer, and controls the conveying speed of the conveying belt and the drying efficiency of the drying device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wet sawdust drying, in particular to a wet sawdust drying system and a wet sawdust processing system. BACKGROUND

[0002] In the process of papermaking, wet sawdust is usually generated. In order to effectively utilize the wet sawdust, the wet sawdust is dried by a wet sawdust drying device, so that sawdust with a certain dryness is obtained and then is sent into a fuel bin to act as fuel.

[0003] The wet sawdust drying device dries the sawdust by reasonably adjusting the drying temperature. The high-wet sawdust is dried under sufficient heat. The water evaporation of the wet sawdust can be accelerated by controlling the reasonable drying temperature. The drying efficiency can be improved by reasonably adjusting the temperature at the feeding end according to the material requirement. However, since the water content of the sawdust sent into the sawdust drying machine cannot be known, it is difficult to control the temperature, and the sawdust dryness control is also difficult, which leads to low drying efficiency of the existing sawdust drying machine for the wet sawdust. CONTENT OF THE INVENTION

[0004] In view of the above problems, the present application provides a wet sawdust drying system, which solves the problem that the existing sawdust drying device has low drying efficiency for the wet sawdust due to the difficulty in controlling the temperature and the difficulty in controlling the sawdust dryness caused by the inability to know the water content of the sawdust sent into the sawdust drying machine.

[0005] To achieve the above-mentioned purpose, the inventor provides a wet sawdust drying system, which comprises:

[0006] A feeding screw is used to convey the wet sawdust to the belt dryer.

[0007] The belt dryer comprises a moisture detection sensor, a conveyor belt and a drying device. The moisture detection sensor is two, which are respectively arranged at the feeding end and the discharging end of the belt dryer. The conveyor belt is used to convey the wet sawdust. The drying device is used to heat and dry the wet sawdust on the conveyor belt.

[0008] A controller is connected to the moisture detection sensor, the conveyor belt and the drying device.

[0009] A discharging screw is arranged at the discharging port of the belt dryer. The discharging screw is used to convey the sawdust dried by the belt dryer to the scraper.

[0010] In some embodiments, the conveyor belt is a conveyor belt with mesh holes.

[0011] The drying device comprises:

[0012] a circulating air blower for delivering air to the conveyor belt and through the mesh on the conveyor belt;

[0013] a heating device for heating the air delivered to the conveyor belt by the circulating air blower.

[0014] In some embodiments, the heating device comprises:

[0015] a circulating pump for delivering water from a water source to a hot water heater;

[0016] a hot water heater for heating the water delivered thereto and delivering the heated water to a heat exchanger;

[0017] a heat exchanger for heating the air delivered by the circulating air blower with the hot water delivered by the hot water heater.

[0018] In some embodiments, the belt dryer further comprises:

[0019] an exhaust blower for exhausting the humid air above the conveyor belt from the belt dryer.

[0020] In some embodiments, the exhaust port of the exhaust blower is provided with a silencer.

[0021] In some embodiments, the exhaust blower is connected to the controller.

[0022] In some embodiments, the feed screw is connected to the controller.

[0023] In some embodiments, further comprising:

[0024] a uniformizing screw for delivering the humid wood chips to the feed screw after uniformizing the humid wood chips.

[0025] Another technical solution is also provided, a humid wood chip processing system comprising:

[0026] a raw material belt for delivering the humid wood chips to a screw hopper;

[0027] a screw hopper for delivering the humid wood chips to the feed screw of a humid wood chip drying system;

[0028] a humid wood chip drying system as described above;

[0029] a scraper for delivering the wood chips output by the discharge screw of the humid wood chip drying system to a distributor;

[0030] the distributor for delivering the wood chips to a distribution screw after distributing the wood chips.

[0031] A distribution screw for feeding the wood chips into the distributor;

[0032] A distributor for feeding the wood chips into the fuel bin.

[0033] Different from the prior art, the above technical scheme transports the wet wood chips to the conveying belt of the belt dryer through the feeding screw, the drying device of the belt dryer heats and dries the wet wood chips on the conveying belt, the dried wood chips are fed into the scraper through the discharging screw, and finally fed into the fuel bin; the controller detects the humidity of the wet wood chips fed into the belt dryer through the moisture detection sensor at the feeding end of the belt dryer, detects the dryness of the dried wood chips through the moisture detection sensor at the discharging end of the belt dryer, controls the conveying speed of the conveying belt and the drying efficiency of the drying device, when the humidity of the fed wet wood chips is high, the conveying speed of the conveying belt is reasonably reduced and the drying efficiency of the drying device is increased, when the humidity of the wet wood chips is low, the conveying speed of the conveying belt is reasonably increased and the drying efficiency of the drying device is reduced, thereby improving the drying efficiency of the wet wood chips and the dryness of the dried wet wood chips.

[0034] The above content related to the utility model is only a summary of the technical scheme of the application, in order to enable those skilled in the art to more clearly understand the technical scheme of the application, and then can be implemented according to the content recorded in the specification and drawings, and in order to let the above purpose and other purposes, characteristics and advantages of the application can be more easily understood, the following is described in combination with the specific embodiment and drawings of the application. BRIEF DESCRIPTION OF DRAWINGS

[0035] The drawings are only used to show the principles, implementation modes, applications, characteristics and effects of the specific embodiments and other related contents of the application, and cannot be considered as the limitation of the application.

[0036] In the drawings of the specification:

[0037] Figure 1 A structural schematic view of the wet wood chip drying system described in the specific embodiment;

[0038] Figure 2 Another structural schematic view of the wet wood chip drying system described in the specific embodiment;

[0039] Figure 3 A structural schematic view of the belt dryer described in the specific embodiment;

[0040] Figure 4 A structural schematic view of the heating device described in the specific embodiment;

[0041] Figure 5A structural schematic diagram of the wet wood chip processing system described in the detailed description.

[0042] The reference signs involved in the above-mentioned drawings are explained as follows:

[0043] 110, feeding screw,

[0044] 120, belt dryer;

[0045] 121, moisture detection sensor,

[0046] 122, conveying belt,

[0047] 123, controller,

[0048] 124, drying device,

[0049] 1241, circulating air fan,

[0050] 1242, circulating pump,

[0051] 1243, hot water heater,

[0052] 1244, heat exchanger,

[0053] 125, exhaust fan,

[0054] 126, muffler,

[0055] 130, discharging screw,

[0056] 140, uniformizing screw

[0057] 210, raw material belt,

[0058] 220, screw hopper,

[0059] 230, scraper,

[0060] 240, distributor,

[0061] 250, distributing screw,

[0062] 260, spreader,

[0063] 270, fuel bin. DETAILED DESCRIPTION

[0064] To explain the possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects that can be achieved, etc. of the present application in detail, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described in this paper are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0065] The term "embodiment" is mentioned in this document means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0066] Unless otherwise defined, the meaning of technical terms used in this document is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms in this document is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0067] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this document generally represents that the associated objects before and after are a "or" logical relationship.

[0068] In this application, such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between them.

[0069] In this application, without more limitation, the "include", "contain", "have" or other similar expressions used in the sentence are intended to cover non-exclusive inclusion, and these expressions do not exclude the presence of other elements in the process, method or product including the described elements, so that the process, method or product including a series of elements can not only include those limited elements, but also include other elements not explicitly listed, or also include the elements inherent in such process, method or product.

[0070] As the same as the understanding in the "Guidelines for Examination", in this application, "greater than", "less than", "exceed" and other expressions are understood as not including the number; "above", "below", "within" and other expressions are understood as including the number. In addition, the meaning of "multiple" in the description of the embodiments of the present application is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise explicitly limited.

[0071] In the description of the embodiments of the present application, the spatial relative expressions, such as "central", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship shown in the specific embodiments or the drawings, and are only used to facilitate the description of the specific embodiments of the present application or to facilitate the understanding of the reader, and do not indicate or imply that the indicated device or component must have a particular position, a particular orientation, or be constructed or operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0072] Unless otherwise explicitly specified or limited, in the description of the embodiments of the present application, the terms "mount", "connect", "connect", "fix", "set", and the like should be understood broadly. For example, the "connection" can be fixed connection, or detachable connection, or integral setting; it can be mechanical connection, or electrical connection, or communication connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art to which the present application belongs, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0073] Please refer to Figures 1-3 The present embodiment provides a wet sawdust drying system, comprising:

[0074] A feed screw 110 is used to transport wet sawdust to a belt dryer 120;

[0075] The belt dryer 120 comprises a moisture detection sensor 121, a conveyor belt 122 and a drying device 124. The moisture detection sensor 121 is arranged at the feed end of the belt dryer 120, and is used to collect the dryness of the wet sawdust fed into the belt dryer 120. The conveyor belt is used to transport wet sawdust, and the drying device 124 is used to heat and dry the wet sawdust on the conveyor belt 122;

[0076] A controller 123 is connected to the moisture detection sensor 121, the conveyor belt 122 and the drying device 124;

[0077] A discharge screw 130 is arranged at the discharge port of the belt dryer 120, and is used to transport the sawdust dried by the belt dryer 120 to a scraper 230.

[0078] The wet wood chips are transported to the conveying belt 122 of the belt dryer 120 by the feeding screw 110, the wet wood chips on the conveying belt 122 are heated and dried by the drying device 124 of the belt dryer 120, the dried wood chips are sent into the scraper 230 by the discharging screw 130, and finally into the fuel bin 270; the controller 123 detects the humidity of the wet wood chips sent into the belt dryer 120 through the moisture detection sensor 121 at the feeding end of the belt dryer 120, detects the dryness of the dried wood chips through the moisture detection sensor 121 at the discharging end of the belt dryer 120, controls the conveying speed of the conveying belt 122 and the drying efficiency of the drying device 124, when the humidity of the sent wet wood chips is high, the conveying speed of the conveying belt 122 is reasonably reduced and the drying efficiency of the drying device 124 is increased, and when the humidity of the wet wood chips is low, the conveying speed of the conveying belt 122 is reasonably increased and the drying efficiency of the drying device 124 is reduced, thereby improving the drying efficiency of the wet wood chips and the dryness of the dried wet wood chips.

[0079] In some embodiments, the conveying belt 122 is a conveying belt 122 with mesh holes;

[0080] The drying device 124 comprises:

[0081] The circulating air blower 1241 is used to transport air to the conveying belt 122 and pass through the mesh holes on the conveying belt 122;

[0082] The heating device is used to heat the air transported by the circulating air blower 1241 to the conveying belt 122.

[0083] The air transported by the circulating air blower 1241 to the conveying belt 122 is heated by the heating device, and the heated air takes away the water in the wet wood chips during the process of heating and drying the wet wood chips on the conveying belt 122 through the mesh holes on the conveying belt 122, thereby realizing the drying of the wet wood chips. In other embodiments, the conveying belt 122 can also be directly heated, and the wet wood chips on the conveying belt 122 are heated and dried by the conveying belt 122 with high temperature.

[0084] Please refer to Figure 4 In some embodiments, the heating device comprises:

[0085] The circulating pump 1242 is used to transport water from the water source to the hot water heater 1243;

[0086] The hot water heater 1243 is used to heat the sent water and send it to the heat exchanger 1244;

[0087] A heat exchanger 1244 is arranged to heat the air delivered by the circulating air blower 1241 with the hot water delivered by the hot water heater 1243.

[0088] The water from the water source is delivered to the hot water heater 1243 by the circulating pump 1242, and the heated hot water is delivered to the heat exchanger 1244. The heat exchanger 1244 heats the air delivered by the circulating air blower 1241 to the conveyor belt 122 with the heat of the hot water, thereby achieving the heating and drying of the wet wood chips on the conveyor belt 122. The water from the water source can be factory water and desalted water. During the process of delivering the hot water from the hot water heater 1243 to the heat exchanger 1244, the hot water heated by the hot water heater 1243 can be heated again by the drying and heating low-pressure steam heat exchanger. The low-pressure steam is heated by the drying and heating low-pressure steam heat exchanger, and the heat of the low-pressure steam is transferred to the hot water heated by the hot water heater 1243, thereby achieving the heating of the hot water again.

[0089] Please refer to Figure 1 In some embodiments, the belt dryer 120 further comprises

[0090] An exhaust fan 125 is arranged to exhaust the wet air above the conveyor belt 122 from the belt dryer 120.

[0091] In order to avoid the influence of the wet air above the conveyor belt 122 on the heating effect of the wet wood chips on the conveyor belt 122, the exhaust fan 125 is arranged to exhaust the wet air above the conveyor belt 122 from the belt dryer 120, thereby improving the drying effect of the wet wood chips.

[0092] Please refer to Figure 1 In some embodiments, the exhaust outlet of the exhaust fan 125 is provided with a silencer 126. By arranging the silencer 126 at the exhaust outlet of the exhaust fan 125, the noise generated by the exhaust fan 125 during the exhaust process is avoided, thereby avoiding the influence on the workers.

[0093] Please refer to Figure 3 In some embodiments, the exhaust fan 125 is connected to the controller 123. The exhaust fan 125 is connected to the controller 123, and the controller 123 can control the exhaust efficiency of the exhaust fan 125. When the controller 123 detects that the humidity of the wet wood chips is high through the moisture detection sensor 121, the exhaust frequency of the exhaust fan 125 is increased.

[0094] Please refer to Figure 3In some embodiments, the feeding screw 110 is connected to a controller 123. The feeding screw 110 is connected to the controller 123, and the controller 123 can adjust the drying effect of the drying device 124 according to the amount of wood chips fed into the belt dryer 120 by the feeding screw 110. When the amount of wood chips increases, the drying efficiency of the drying device 124 is increased, and when the amount of wood chips decreases, the drying efficiency of the drying device 124 is decreased, ensuring that the material is fully dispersed and heated in the drying chamber of the belt dryer 120, improving the drying effect.

[0095] Please refer to Figure 5 In some embodiments, the system further comprises:

[0096] The material uniformizing screw 140 is used to uniformly distribute the wet wood chips before feeding them into the feeding screw 110.

[0097] The wet wood chips are uniformly distributed by the material uniformizing screw 140, so that the wet wood chips are more evenly distributed when they are fed into the belt dryer 120 by the feeding screw 110, thereby improving the drying effect of the wet wood chips.

[0098] In some embodiments, a wet wood chip drying system has the following working steps:

[0099] 1. Wood chip raw material preparation: Select wood chips with uniform particle size as raw material, with an initial moisture content of 45%-50%.

[0100] 2. Drying process: The wood chips pass through the belt dryer 120, the raw material drying system, and the drying circulating heating system. The belt dryer 120 is equipped with 13 heat exchangers 1244 and 10 air fans. The circulating water enters the heat exchanger 1244, the circulating air fan 1241 sucks air from the bottom of the net, heats it through the heat exchanger 1244, penetrates the raw material on the net, and then discharges the water, thereby drying the raw material. The moisture content of the wet wood chips is reduced to about 10% to improve the efficiency of the subsequent gasification reaction.

[0101] Automatic adjustment is performed according to real-time humidity requirements and system load. A moisture detection sensor 121 is provided at each end of the wood chip inlet and outlet to monitor the dryness and humidity of the wood chips in real time using a sensor and a data acquisition system, ensuring that the parameters of the wood chips during the drying process are met. Through data analysis, the high-energy consumption link is found and optimized, such as increasing the frequency of the exhaust fan 125 and the drying circulating water temperature. An advanced automatic control system is used to accurately control various parameters during the drying process, ensuring the stability and efficiency of the drying process.

[0102] Adjusting the equipment parameters: through the two uniform feeding screws 140 at the feeding end, and the feeding screw 110 reasonably control the feeding speed, avoid the problem of uneven drying or blockage caused by too fast or too slow. When the wood chip feeding amount increases or decreases, the temperature, air speed and air pressure will be automatically adjusted to ensure that the material is fully dispersed and heated in the drying chamber, improving the drying efficiency.

[0103] Please refer to Figure 5 In another embodiment, a wet wood chip processing system comprises:

[0104] A raw material belt 210 for feeding wet wood chips into a screw hopper 220;

[0105] A screw hopper 220 for feeding wet wood chips into a wet wood chip drying system feeding screw 110;

[0106] A wet wood chip drying system comprising a feeding screw 110 for conveying wet wood chips to a belt dryer 120;

[0107] A belt dryer 120 comprising a moisture detection sensor 121, a conveyor belt 122 and a drying device 124, the moisture detection sensor 121 is arranged at the feeding end of the belt dryer 120, the moisture detection sensor 121 is used to collect the dryness of the wet wood chips fed into the belt dryer 120, the conveyor belt is used to convey wet wood chips, and the drying device 124 is used to heat and dry the wet wood chips on the conveyor belt 122;

[0108] A controller 123 connected to the moisture detection sensor 121, the conveyor belt 122 and the drying device 124;

[0109] A discharge screw 130 arranged at the discharge port of the belt dryer 120, the discharge screw 130 is used to convey the wood chips dried by the belt dryer 120 to a scraper 230;

[0110] A scraper 230 for feeding the wood chips output by the discharge screw 130 of the wet wood chip drying system into a distributor 240;

[0111] The distributor 240 is used to distribute the wood chips fed into a distribution screw 250;

[0112] A distribution screw 250 for feeding wood chips into a distributor 260;

[0113] A distributor 260 for feeding wood chips into a fuel bin 270.

[0114] The wet wood chips are sent into the feeding screw 110 through the raw material belt 210, and are transported to the conveying belt 122 of the belt dryer 120 through the feeding screw 110. The drying device 124 of the belt dryer 120 heats and dries the wet wood chips on the conveying belt 122. The dried wood chips are sent into the scraper 230 through the discharging screw 130. The scraper 230 sends the wood chips into the distributor 240 for distribution, and then sends the wood chips into the fuel bin 270 through the distributor 260. The controller 123 detects the humidity of the wet wood chips sent into the belt dryer 120 through the moisture detection sensor 121 at the feeding end of the belt dryer 120, detects the dryness of the dried wood chips through the moisture detection sensor 121 at the discharging end of the belt dryer 120, controls the conveying speed of the conveying belt 122 and the drying efficiency of the drying device 124, and reasonably reduces the conveying speed of the conveying belt 122 and increases the drying efficiency of the drying device 124 when the humidity of the sent wet wood chips is high, and reasonably increases the conveying speed of the conveying belt 122 and reduces the drying efficiency of the drying device 124 when the humidity of the wet wood chips is low, thereby improving the drying efficiency of the wet wood chips and the dryness of the dried wet wood chips.

[0115] In some embodiments, the conveying belt 122 is a conveying belt 122 with mesh holes;

[0116] The drying device 124 comprises:

[0117] The circulating air blower 1241 is used to transport air to the conveying belt 122 and pass through the mesh holes on the conveying belt 122;

[0118] The heating device is used to heat the air transported by the circulating air blower 1241 to the conveying belt 122.

[0119] The air transported by the circulating air blower 1241 to the conveying belt 122 is heated by the heating device. The heated air takes away the water in the wet wood chips during the process of heating and drying the wet wood chips on the conveying belt 122 through the mesh holes on the conveying belt 122, thereby realizing the drying of the wet wood chips. In other embodiments, the conveying belt 122 can also be directly heated, and the wet wood chips on the conveying belt 122 are heated and dried by the conveying belt 122 with high temperature.

[0120] In some embodiments, the heating device comprises:

[0121] The circulating pump 1242 is used to transport water from a water source to the hot water heater 1243;

[0122] A hot water heater 1243 is arranged to heat the water supplied thereto and then supply the heated water to a heat exchanger 1244;

[0123] The heat exchanger 1244 is arranged to heat the air supplied by the circulating air blower 1241 by the heat of the hot water supplied by the hot water heater 1243.

[0124] The water from the water source is supplied to the hot water heater 1243 by the circulating pump 1242, heated by the hot water heater 1243, and then supplied to the heat exchanger 1244. The heat exchanger 1244 heats the air supplied to the conveyor belt 122 by the circulating air blower 1241 by the heat of the hot water, thereby achieving the heating and drying of the wet wood chips on the conveyor belt 122. The water from the water source can be factory water or desalted water. During the process of supplying the hot water from the hot water heater 1243 to the heat exchanger 1244, the hot water heated by the hot water heater 1243 can be heated again by the drying and heating low-pressure steam heat exchanger 1244. The low-pressure steam is heated by the drying and heating low-pressure steam heat exchanger 1244, and then the heat of the low-pressure steam is transferred to the hot water heated by the hot water heater 1243, thereby heating the hot water again.

[0125] In some embodiments, the belt dryer 120 further comprises;

[0126] An exhaust fan 125 is arranged to exhaust the wet air above the conveyor belt 122 from the belt dryer 120.

[0127] In order to avoid the influence of the wet air above the conveyor belt 122 on the heating effect of the wet wood chips on the conveyor belt 122, the exhaust fan 125 is arranged to exhaust the wet air above the conveyor belt 122 from the belt dryer 120, thereby improving the drying effect of the wet wood chips.

[0128] In some embodiments, the exhaust outlet of the exhaust fan 125 is provided with a silencer 126. By arranging the silencer 126 at the exhaust outlet of the exhaust fan 125, the noise generated by the exhaust fan 125 during the exhaust process is avoided, thereby avoiding the influence on the workers.

[0129] In some embodiments, the exhaust fan 125 is connected to the controller 123. The exhaust fan 125 is connected to the controller 123, and the controller 123 can control the exhaust efficiency of the exhaust fan 125. When the controller 123 detects that the humidity of the wet wood chips is high by the moisture detection sensor 121, the exhaust frequency of the exhaust fan 125 is increased.

[0130] In some embodiments, the feeding screw 110 is connected to a controller 123. The feeding screw 110 is connected to the controller 123, and the controller 123 can adjust the drying effect of the drying device 124 according to the amount of wood chips fed into the belt dryer 120 by the feeding screw 110. When the amount of wood chips fed increases, the drying efficiency of the drying device 124 is increased, and when the amount of wood chips fed decreases, the drying efficiency of the drying device 124 is decreased, so as to ensure that the wood chips are sufficiently dispersed and heated in the drying chamber of the belt dryer 120, and the drying effect is improved.

[0131] In some embodiments, the method further comprises:

[0132] The uniformizing screw 140 is used to uniformly distribute the wet wood chips before feeding the wet wood chips into the feeding screw 110.

[0133] The wet wood chips are uniformly distributed by the uniformizing screw 140 before being fed into the belt dryer 120 by the feeding screw 110, so that the wet wood chips entering the belt dryer 120 are more uniformly distributed, and the drying effect of the wet wood chips is improved.

[0134] Finally, it should be noted that, although the above embodiments have been described in the specification and drawings of the present application, the patent protection scope of the present application should not be limited. Any technical solutions obtained by replacing or modifying the equivalent structures or equivalent processes based on the essential concept of the present application, using the content described in the specification and drawings of the present application, and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. A wet wood chip drying system, characterized in that, It comprises: a feeding screw for conveying wet wood chips to a belt dryer; a belt dryer comprising moisture detection sensors, a conveyor belt and a drying device, the moisture detection sensors are two, respectively arranged at the feeding end and discharging end of the belt dryer, the conveyor belt is used for conveying wet wood chips, and the drying device is used for heating and drying the wet wood chips on the conveyor belt; a controller connected to the moisture detection sensors, the conveyor belt and the drying device; a discharging screw arranged at the discharging port of the belt dryer, the discharging screw is used for conveying the wood chips dried by the belt dryer to a scraper.

2. The wet shive drying system of claim 1, wherein, The conveyor belt is a conveyor belt with mesh holes; The drying device comprises: a circulating air blower for conveying air to the conveyor belt and passing through the mesh holes on the conveyor belt; a heating device for heating the air conveyed by the circulating air blower to the conveyor belt.

3. The wet shive drying system of claim 2, wherein, The heating device comprises: a circulating pump for conveying water from a water source to a hot water heater; a hot water heater for heating the water sent into the heat exchanger; a heat exchanger for heating the air conveyed by the circulating air blower with the hot water conveyed by the hot water heater.

4. The wet shive drying system of claim 1, wherein, The belt dryer further comprises: an exhaust fan for discharging the wet air above the conveyor belt from the belt dryer.

5. The wet woodchip drying system according to claim 4, characterized in that, The exhaust port of the exhaust fan is provided with a silencer.

6. The wet woodchip drying system according to claim 4, wherein The exhaust fan is connected to the controller.

7. The wet woodchip drying system of claim 1, wherein, The feeding screw is connected to the controller.

8. The wet woodchip drying system of claim 1, wherein, It further comprises: a uniform screw for conveying the wet wood chips after uniformizing to the feeding screw.

9. A wet wood chip treatment system characterized by, It comprises: a raw material belt for conveying wet wood chips into a screw hopper; a screw hopper for conveying wet wood chips into the feeding screw of a wet wood chip drying system; a wet wood chip drying system according to any one of claims 1-8; a scraper for conveying the wood chips output by the discharging screw of the wet wood chip drying system into a distributor; The distributor is used for distributing the wood chips sent into the distribution screw; a distribution screw for conveying the wood chips into a distributor; a distributor for conveying the wood chips into a fuel bin.

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