LU500717B1

LU500717B1 - Device for Detecting Moisture Content of Forest Combustibles

Info

Publication number: LU500717B1
Application number: LU500717A
Authority: LU
Inventors: Haijiao Wang; Zaijun Guo; Runsheng Wang; Demin Gao; Qiaolin Ye; Yuntao Li; Haifeng Niu
Original assignee: Zhangjiakou Forestry Science Research Institute Zhangjiakou Grape Tech Research And Development Cent; Univ Nanjing Forestry
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-04-08

Abstract

The invention discloses a device for detecting moisture content of forest combustibles, comprising an extraction assembly, an impurity removal assembly, a heating assembly and an outer frame, wherein the extraction assembly is connected with the outer top of the outer frame; the impurity removal assembly and heating assembly are located inside the outer frame; the bottom of the impurity removal assembly is firmly connected with the inner bottom of the outer frame; the top of the heating assembly is firmly connected with the inner top of the outer frame. The invention can extract the internal components of the tree by the extraction assembly, and ensure that the moisture is not lost in the extraction assembly.

Description

DESCRIPTION Device for Detecting Moisture Content of Forest Combustibles

TECHNICAL FIELD The invention relates to the technical field of moisture content detection, in particular to a device for detecting the moisture content of forest combustibles.

BACKGROUND The moisture content detection of forest combustibles is an important index for measuring fire prevention. Traditional detection devices for moisture content of forest combustibles are divided into direct detection and indirect detection. Direct detection 1s to extract the water from the object to be detected and detect the water quality. This detection method can heat the object and condense the water vapor. However, the detection equipment in this way is usually complex and inconvenient to bring into the forest, and the water vapor is prone to insufficient condensation. Most of the existing detection devices carried into the forest are indirect detection devices, and the indirect detection devices weigh the objects to be detected before and after water evaporation, and detect them through the difference. However, the traditional equipment can't fully evaporate the water in plant cells, and in order to expose the water inside the trees, crushing treatment is usually carried out, and local burning often occurs during the crushing process, which will reduce the accuracy of indirect measurement. Traditional detection devices are not equipped with special extraction equipment, which can't extract the inner substances of trees. However, extra impurities are usually attached to the surfaces of combustible materials such as branches extracted from the ground, and the impurities not removed will also affect the detection results.

SUMMARY The purpose of the present invention is to provide a device for detecting the moisture content of forest combustibles, so as to solve the problems raised in the above background technology.

In order to solve the above technical problems, the present invention provides the following technical scheme: the water content detection device for forest combustibles comprises an extraction assembly, an impurity removal assembly, a heating assembly and an outer frame; the extraction assembly is connected with the outer top of the outer frame; the impurity removal assembly and heating assembly are located inside the outer frame; the bottom of the impurity removal assembly is firmly connected with the inner bottom of the outer frame; the top of the heating assembly is firmly connected with the inner top of the outer frame. According to the invention, the internal components of trees can be extracted through the extraction assembly, and meanwhile, the moisture is not lost in the extraction process. The impurity removal assembly carries out low-temperature freezing treatment on the object to be detected, removes impurities by high-frequency vibration after freezing, and simultaneously breaks the cell wall and cell membrane inside the object to be detected; the heating assembly crushes the frozen object to be detected, then evaporates the water in the object to be detected by reducing the pressure and raising the temperature, and determines the water content by the change of weight before and after evaporation. This detection method can effectively improve the accuracy of indirect measurement, and at the same time, it also reduces the influence of impurities on the surface layer of the extract and the surface layer of the extract on the detection results.

Furthermore, the extraction assembly comprises a collecting cylinder, a connecting rod, a rotating handle and annular sawtooth; One end of the collecting cylinder seal is firmly connected with the connecting rod, and the end of the connecting rod far away from the collecting cylinder is firmly connected with the rotating handle; the inner and outer sides of the side wall of the collecting cylinder are provided with a plurality of airflow grooves, the diameter of the collecting cylinder gradually increases from the opening to the inside, and the airflow grooves are provided with ventilation holes near the opening of the collecting cylinder; the annular sawtooth is installed at the unsealed end of the collecting barrel, and the side of the annular sawtooth without serration is firmly connected with the end face of the collecting barrel. When testing the moisture content of hard trees, in order to extract the inner layer of trees, the device is specially equipped with an extraction assembly. By aligning the collection barrel with the tree branch, squeezing it hard and turning the rotary handle at the same time, the ring saw teeth move towards the inside of the tree by friction. In the process of drilling the tree inner layer components, the juice in the tree will partially seep out due to the squeezing force. In order to avoid the influence of this factor on the detection results, the invention avoids the continuous pressure exerted by the circumferential squeezing force on the tree extract by setting the inner diameter of the collecting barrel larger than the entrance diameter. The airflow groove and vent hole on the side wall of the collecting barrel can help the output of airflow inside the collecting barrel. When the tree extract 1s pressed into the collecting barrel, the pressure of the gas inside the collecting barrel will increase and the gas will be slowly discharged from the vent hole along the airflow groove. On the one hand, the air flow conducts the heat generated by friction on the side wall of the collecting barrel; on the other hand, the pressure of the air inside the air flow groove will be maintained at a higher pressure, which will form a pressure difference between the inside and outside of the tree extract, and the conduit in the xylem of the tree extract will reduce the water discharge due to this pressure difference. This arrangement can reduce the water loss during the extraction process of substances inside the tree.

Furthermore, the extraction assembly also comprises a connecting rope and a buckle, wherein the buckle 1s installed on the top of the outer frame, the connecting rod can be clamped into the buckle, one end of the connecting rope is fixedly connected with the rotating handle, and the other end of the connecting rope is fixedly connected with the buckle. In order to avoid the loss of the extraction assembly, a connecting rope is arranged on the extraction assembly, and the connecting rod is removed from the buckle for normal use when needed, and then clamped into the buckle when not needed.

Furthermore, the impurity removal assembly comprises a refrigerator, a cryostat, an upper vibrating plate, a lower vibrating plate, a heat insulation pad and an electric cylinder; The cryostat is located inside the outer frame, the bottom of the cryostat is firmly connected with the bottom of the outer frame, the top of the cryostat is firmly connected with the insulation pad, and the side of the insulation pad far away from the cryostat is firmly connected with the heating assembly. Vibrators are installed inside the upper and lower vibrating plates, which are provided with horizontal vibrating surfaces and connected with the vibrating surfaces of the upper and lower vibrating plates. The side of the lower vibrating plate far from the vibrating surface is firmly connected with the bottom edge of the inner side of the cryostat, the side of the upper vibrating plate far from the vibrating surface is firmly connected with the output shaft of the electric cylinder, and the end of the electric cylinder far from the output shaft is firmly connected with the top of the inner side of the cryostat. Branches on the deep forest floor are also one of the important components of combustibles, and sediment impurities contaminated on the branches often become the influencing factors of detection accuracy. In order to solve this problem, an impurity removal assembly is arranged in the invention. Before removing impurities, the impurity removal assembly will cool down the interior of the low-temperature box through the refrigerator, and the extract to be detected will be frozen under the action of low temperature. At this time, the upper vibrating plate moves down under the drive of the electric cylinder, and the object to be detected is clamped by the upper vibrating plate and the lower vibrating plate, and then starts to vibrate at high frequency. When the object to be detected vibrates at high frequency, impurities such as silt will be thrown out under the action of vibration force, and the moisture contained in the silt cannot affect the subsequent detection of water content. By freezing, the water inside the object to be detected can be prevented from being thrown out due to vibration in the process of high-frequency vibration, and at the same time, the situation that some liquid beads vibrate at high speed in a closed cavity and cause local overheating to cause partial water evaporation can be avoided. The arrangement of the impurity removal assembly greatly improves the accuracy of the device.

Furthermore, the vibration surfaces of the upper vibrating plate and the lower vibrating plate are provided with a plurality of vibration probes with different thicknesses. When the upper vibrating plate and the lower vibrating plate clamp the object to be detected, the vibration probe will be inserted into the plant body. Because of the difference in thickness of the vibration probe, the vibration energy transmitted by the vibration probe will have regional differences. Under the influence of the difference in vibration energy, the ice crystals in the plant cells will show irregular vibration state, and the collision between the ice crystals and surrounding substances will increase. The irregular vibration of the ice crystals will more easily damage the cell wall, cell membrane and vacuole membrane. After the cell wall, cell membrane and vacuole membrane are damaged, the water will be more likely at the heating assemblies.

Further, the heating assembly comprises a grinding assembly, a vacuum pump, a sealed box, a grinding cylinder, an electronic scale, a supporting ring and a supporting rod. The sealed box is located inside the outer frame, and its top is firmly connected with the top of the outer frame.

The bottom of the sealed box is firmly connected with the side of the insulation pad far away from the low temperature box.

The vacuum pump 1s installed on the outer side wall of the sealed box, which is communicated with the inside of the sealed box through pipelines.

The grinding assembly is firmly connected with the top inside the sealed box.

The grinding cylinder is installed inside the support ring, which is internally provided with an electromagnetic coil.

When the electromagnetic coil is energized, the supporting ring and the grinding cylinder are firmly connected, the supporting ring and the supporting rod are firmly connected, the end of the supporting rod far away from the supporting ring is firmly connected with the inner side wall of the sealed box, and the electronic scale is firmly connected with the bottom side of the inner wall of the sealed box.

A tray is arranged above the electronic scale, and the tray is located right below the grinding drum.

After being processed by the impurity removal assembly, the object to be detected will be put into the grinding drum in the sealed box, at this time, the electromagnetic coil inside the support ring is not energized, and the grinding drum is directly pressed above the electronic scale, which will weigh the object to be detected once.

After weighing, the electromagnetic coil inside the support ring is electrified.

After the electromagnetic coil is electrified, the electronic scale is no longer directly affected by the gravity of the crushing cylinder, and the crushing part will crush the object to be detected by rotating and pressing down.

The frozen state can timely absorb the heat generated by the crushing part in the friction process, thus avoiding partial combustion of the object to be detected due to local overheating.

In the process of rotating and extruding the crushed parts, the originally frozen water will melt quickly.

After grinding, the vacuum pump will continue to vacuumize the inside of the sealed box, the gas pressure inside the sealed box will decrease continuously, and the boiling point of water inside the sealed box will be greatly reduced.

The electromagnetic coil inside the support ring will continue to be energized, and the heat generated by the coil will be transferred to the inside of the grinding cylinder through the support ring, so that the temperature of the object to be detected in the grinding cylinder will rise, and the water in the object to be detected will easily vaporize due to the low-pressure boiling point reduction.

After the water is fully vaporized, the electromagnetic coil will be powered off, and the grinding cylinder will once again fall on the electronic scale for secondary weighing. The water content in the detected object can be accurately calculated through the difference between the two times of weighing, and the measurement accuracy 1s improved through the indirect measurement mode; and meanwhile, the frozen object to be detected 1s crushed, which not only accelerates the dissolution rate of the water and improves the detection speed, but also enables the water to fully flow out, thereby avoiding local residue when the water is vaporized.

Further, the grinding assemblies include linear motor, rotary motor, motor mounting seat and grinding plate, one end of the linear motor far from the output shaft is firmly connected with the top inside the sealed box, the upper surface of the motor mounting seat is firmly connected with the output shaft of the linear motor, the lower surface of the motor mounting seat is firmly connected with the end of the rotary motor far from the output shaft, and the output shaft of the rotary motor is firmly connected with the grinding plate. When the rolling assemblys start to work, the linear motor drives the motor mounting seat to move down, the motor mounting seat drives the rotary motor to move down, and the output shaft of the rotary motor drives the grinding plate to rotate. The grinding plate can fully crush the object to be detected by rotating and pressing down, and the crushed object to be processed 1s fully exposed to the air. After heating, the moisture in the object to be processed can be fully evaporated, and the water content of the obtained residue is extremely low. In this way, the accuracy of the detection device can be greatly improved.

Furthermore, a circular through hole 1s arranged in the middle of the grinding plate, into which the rotary motor output shaft 1s inserted, which 1s firmly connected with the grinding plate. Several rolling teeth are arranged on one side of the grinding plate far away from the rotary motor, and evenly distributed around the center of the grinding plate. The side of the grinding plate close to the rotary motor is provided with an inlet fan blade which is installed in an annular groove formed on the end face of the grinding plate. When the grinding plate is in contact with the object to be detected, the grinding plate drives the rolling teeth to rotate, and the rolling teeth crush the object to be detected. During the rotation, the inlet fan blades always guide the external air flow into the annular groove, and the air flow enters the gap between the rolling teeth through the vent holes. The gap between the rolling teeth is larger near the outer ring of the grinding plate,

and the air flow will be discharged from the outside of the gap. On the one hand, this arrangement can take away the heat on the tooth surface of the rolling teeth in time through the air flow. Avoid burning the object to be detected due to local overheating. On the other hand, the airflow will also discharge the crushed object to be detected in time, thus avoiding the waste of productivity caused by repeated friction.

Compared with the prior art, the extraction assembly provided by the invention has the beneficial effects that substances in trees can be extracted and detected by the extraction assembly, and meanwhile, a large amount of water loss in trees 1s avoided through positive pressure sealing. The impurity removal assembly locks the water in a low-temperature freezing way, and then causes the friction between the ice crystals inside the cell and the cell membrane wall through unstable high-frequency vibration, so that the cell is broken from the inside, which improves the extraction rate of water in the cell, and also discharges the influence of impurities on the surface of the object to be detected. In the heating group, the object to be detected 1s crushed under the condition of freezing by the grinding plate, which on the one hand avoids local burning in the crushing process, on the other hand, improves the crushing uniformity through the steering flow, and greatly improves the detection accuracy of the whole device.

BRIEF DESCRIPTION OF THE FIGURES The attached drawings are used to provide a further understanding of the present invention and form a part of the specification, and together with the embodiments of the present invention are used to explain the present invention, and do not constitute a limitation on the present invention. In the drawings: Fig. 1 is a schematic diagram of the overall structure of the present invention; Fig. 2 is a sectional view of the extraction assembly of the present invention; Fig. 3 is a schematic diagram of the overall structure of the impurity removal assembly of the present invention; Fig. 4 is a partial sectional view of the impurity removal assembly of the present invention; Fig. 5 is a schematic diagram of the overall structure of the heating assembly of the present invention; Fig. 6 is an overall structure diagram of the grinding plate of the present invention;

Fig. 7 1s a distribution diagram of rolling teeth and ventilation holes of the present invention; Symbols: 1- extraction assembly, 11- collecting barrel, 111- airflow groove, 112- vent hole, 12- connecting rod, 13- rotating handle, 14- annular sawtooth, 15- connecting rope, 16- buckle, 2- impurity removal assembly, 21- refrigerator, 22- cryostat, 23- upper vibrating plate, 24- lower vibrating plate, 25- heat insulation pad, 26- electric cylinder, 27- vibration probe, 3- heating assembly, 31- grinding assembly, 311- linear motor, 312- rotary motor, 313- motor mounting seat, 314- grinding plate, 3141- grinding teeth, 3142- inlet fan blade, 3143- vent hole, 32- vacuum pump, 33- sealed box, 34- grinding drum, 35- electronic scale, 36- support ring, 37- support rod and 4- outer frame.

DESCRIPTION OF THE INVENTION The following will clearly and completely describe the technical scheme in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative labor belong to the scope of protection of the present invention.

Refer to figs. 1-7, that technical scheme provide by the invention is as follows: As shown in Fig. 1, a water content detection device for forest combustibles includes an extraction assembly 1, an impurity removal assembly 2, a heating assembly 3 and an outer frame 4; the extraction assembly 1 is connected with the outer top of the outer frame 4, while the impurity removal assembly 2 and heating module 3 are located inside the outer frame 4. The bottom of the impurity removal assembly 2 is firmly connected with the inner bottom of the outer frame 4. According to the invention, the internal components of trees can be extracted by the extraction assembly 1, and at the same time, water is not lost in the extraction process. The impurity removal assembly 2 performs low-temperature freezing treatment on the object to be detected, removes impurities by high-frequency vibration after freezing, and simultaneously breaks the cell wall and cell membrane inside the object to be detected; the heating assembly 3 crushes the frozen object to be detected, then evaporates the water in the object to be detected by reducing the pressure and raising the temperature, and determines the water content by the change of weight before and after evaporation. Through this detection method, the accuracy of indirect measurement can be effectively improved, and at the same time, the influence of impurities on the surface layer of the extract and the surface layer of the extract on the detection results can be eliminated.

As shown in Fig. 2, the extraction assembly 1 includes a collecting cylinder 11, a connecting rod 12, a rotating handle 13 and annular sawtooth 14. the sealed end of the collecting cylinder 11 is firmly connected with the connecting rod 12, and the end of the connecting rod 12 far away from the collecting cylinder 11 is firmly connected with the rotating handle 13. A plurality of airflow grooves 111 are formed on the inner and outer sides of the sidewall of the collecting cylinder 11, and the diameter of the collecting cylinder 11 gradually increases from the opening to the inside. The airflow grooves 111 are provided with vent holes 112 near the opening of the collecting cylinder 11. The annular sawtooth 14 is installed at the unsealed end of the collecting barrel 11, and the side of the annular sawtooth 14 without serration is firmly connected with the end face of the collecting barrel 11. When detecting the moisture content of hard trees, in order to extract the inner layer of trees, the device is specially equipped with an extraction assembly 1, which aims the collecting barrel 11 at the branches of trees, squeezes hard, and rotates the rotating handle 13 at the same time, and the annular sawtooth 14 moves into the trees through friction. In the process of drilling the tree inner layer components, the juice in the tree will partially seep out due to the squeezing force. In order to avoid the influence of this factor on the detection results, the invention avoids the continuous pressure exerted by the circumferential squeezing force on the tree extract by setting the inner diameter of the collecting barrel 11 larger than the entrance diameter. The airflow groove 111 and airflow hole 112 provided on the side wall of the collecting cylinder 11 can help to output the airflow inside the collecting cylinder 11. When the tree extract is pressed into the collecting barrel 11, the pressure of the gas inside the collecting barrel 11 will increase, and the gas will be slowly discharged from the gas flow hole 112 along the gas flow groove 111. On the one hand, the discharge of the gas flow conducts the heat generated by friction on the sidewall of the collecting barrel 11, and on the other hand, the pressure of the gas inside the gas flow groove 111 will be maintained at a higher pressure, which will create a pressure difference between the inside and outside of the tree extract, and the conduit in the xylem of the tree extract will reduce the moisture due to this pressure difference.

As shown in Fig. 1, the extraction assembly also includes a connecting rope 15 and a buckle 16, the buckle 16 1s installed on the top of the outer frame 4, the connecting rod 12 can be clamped into the buckle 16, one end of the connecting rope 15 1s firmly connected with the rotating handle 13, and the other end of the connecting rope 15 1s firmly connected with the buckle 16. In order to avoid the loss of the extraction assembly 11, a connecting rope 15 1s arranged on the extraction assembly, and the connecting rod 12 is removed from the buckle 16 for normal use when it is needed, and then the connecting rod 12 1s clamped into the buckle 16 when it is not needed.

As shown in Fig. 3, the impurity removal assembly 2 includes a refrigerator 21, a cryostat 22, an upper vibrating plate 23, a lower vibrating plate 24, a heat insulation pad and an electric cylinder 26. The cryostat 22 is located inside the outer frame 4, and the bottom of the cryostat 22 is firmly connected with the bottom of the outer frame 4. The top of the cryostat 22 is firmly connected with a heat insulation pad 25, and the side of the heat insulation pad 25 far away from the cryostat 22 is firmly connected with the heating assembly 3. The refrigerator 21 is installed at the side of the outer wall of the cryostat 22, which is communicated with the interior of the cryostat 22 through pipes. Vibrators are installed in the upper and lower vibrating plates 23 and 24, which are provided with horizontal vibrating surfaces. The vibrators are connected with the vibrating surfaces of the upper and lower vibrating plates 23 and 24, and the side of the lower vibrating plate 24 away from the vibrating surfaces is firmly connected with the inner bottom edge of the cryostat 22. Branches on the deep forest floor are also one of the important components of combustibles, and sediment impurities contaminated on the branches often become the influencing factors of detection accuracy. To solve this problem, the present invention is provided with an impurity removal assembly 2. Before removing impurities, the impurity removal assembly 2 will cool down the interior of the low-temperature box 22 through the refrigerator 21, and the extract to be detected will be frozen under the action of low temperature. At this time, the upper vibrating plate 23 moves down under the drive of the electric cylinder 26, and the object to be detected is clamped by the upper vibrating plate 23 and the lower vibrating plate 24, and then starts to vibrate at high frequency. When the object to be detected vibrates at high frequency, impurities such as silt will be thrown out under the action of vibration force, and the moisture contained in the silt cannot affect the subsequent detection of water content. By freezing, it is possible to avoid that the water inside the object to be detected is thrown out due to vibration in the process of high-frequency vibration, and at the same time, it is also possible to avoid local overheating caused by high-speed vibration of some liquid beads in the closed cavity, resulting in evaporation of some water. The arrangement of the impurity removal assembly 2 greatly improves the accuracy of the device.

As shown in Fig. 4, a plurality of vibration probes 27 are arranged on the vibration surfaces of the upper vibrating plate 23 and the lower vibrating plate 24, and the thicknesses of the vibration probes 27 are different. When the upper vibrating plate 23 and the lower vibrating plate 24 clamp the object to be detected, the vibration probe 27 will be inserted into the plant body. Due to the difference in thickness of the vibration probe 27, the vibration energy transmitted by the vibration probe 27 will have regional differences. Under the influence of the difference in vibration energy, the ice crystals in the plant cells will show irregular vibration state, and the collision between the ice crystals and surrounding substances will increase. The irregular vibration of the ice crystals is more likely to damage cell walls, cell membranes and vacuole membranes.

As shown in Fig. 5, the heating assembly 3 includes a grinding assembly 31, a vacuum pump 32, a sealed box 33, a grinding cylinder 34, an electronic scale 35, a support ring 36 and a support rod 37. The sealed box 33 is located inside the outer frame 4, the top of the sealed box 33 is firmly connected with the top of the outer frame 4, and the bottom of the sealed box 33 is firmly connected with the side of the insulation pad 25 far away from the low temperature box 22. The vacuum pump 32 is installed on the outer side wall of the sealed box 33, and the vacuum pump 32 is communicated with the inside of the sealed box 33 through a pipeline. The grinding assembly 31 is firmly connected with the top inside the sealed box 33, and the grinding cylinder 34 is installed inside the supporting ring 36, which is provided with an electromagnetic coil. When the electromagnetic coil is energized, the supporting ring 36 is firmly connected with the grinding cylinder 34, and the supporting ring 36 is firmly connected with the supporting rod 37, whose end far away from the supporting ring 36 is firmly connected with the inner side wall of the sealed box 33. The electronic scale 35 is fixedly connected with the bottom side of the inner wall of the sealed box 33, and a tray is arranged above the electronic scale 35, and the tray is positioned directly below the grinding cylinder 34. After being processed by the impurity removal assembly 2, the object to be detected will be put into the grinding cylinder 34 in the sealed box 33. At this time, the electromagnetic coil inside the support ring 36 is not energized, and the grinding cylinder 34 is directly pressed above the electronic scale 35, which weighs the object to be detected once. After weighing, the electromagnetic coil inside the support ring 36 is electrified. After the electromagnetic coil is electrified, the electronic scale 35 is no longer directly affected by the gravity of the grinding cylinder 34, and the grinding assembly 31 will grind the object to be detected by rotating and pressing down. The frozen state can timely absorb the heat generated by the grinding assembly 31 in the friction process, thus avoiding partial combustion of the object to be detected due to local overheating. In the process of rotating and squeezing the crushing part 31, the originally frozen water will quickly melt. After grinding, the vacuum pump 32 will continuously vacuumize the inside of the sealed box 33, the gas pressure inside the sealed box 33 will decrease continuously, and the boiling point of water inside the sealed box 33 will be greatly reduced. The electromagnetic coil inside the support ring 36 will continue to be energized, and the heat generated by the coil will be transferred to the inside of the grinding cylinder 34 through the support ring 36. The temperature of the object to be detected in the grinding cylinder 34 will increase, and the water in the object to be detected will easily vaporize due to the low pressure boiling point reduction. The water content in the detected object can be accurately calculated through the difference between the two times of weighing, and the measurement accuracy is improved through the indirect measurement mode; meanwhile, the frozen object to be detected is crushed, which not only accelerates the dissolution rate of the water and improves the detection speed, but also enables the water to fully flow out, thereby avoiding local residue when the water is vaporized.

As shown in Fig. 5, the grinding assembly 31 includes a linear motor 311, a rotary motor 312, a motor mounting seat 313 and a grinding plate 314. The end of linear motor 311 far away from the output shaft is firmly connected with the top inside sealed box 33, the upper surface of motor mount 313 is firmly connected with the output shaft of linear motor 311, the lower surface of motor mount 313 1s firmly connected with the end of rotary motor 312 far away from the output shaft, and the output shaft of rotary motor 312 is firmly connected with grinding plate 314. When the rolling assembly 31 starts to work, the linear motor 311 drives the motor mount 313 to move down, the motor mount 313 drives the rotary motor 312 to move down, and the output shaft of the rotary motor 312 drives the grinding plate 314 to rotate. The grinding plate 314 can fully crush the object to be detected by rotating and pressing down, and the crushed object to be treated is fully exposed to the air, and the water in the object to be treated can be fully evaporated after heating, so that the obtained residue has extremely low water content.

As shown in figs. 6 and 7, a circular through hole is formed in the middle of the grinding plate 314, and the output shaft of the rotary motor 312 is inserted into the circular through hole. The output shaft of the rotary motor 312 is firmly connected with the grinding plate 314. A plurality of grinding teeth 3141 are arranged on one side of the grinding plate 314 far from the rotary motor 312, and the grinding teeth 3141 are uniformly distributed around the center of the grinding plate 314. The grinding plate 314 is also provided with a vent hole 3143, one end of which is connected with the annular groove, and the other end of which is connected with the gap between the rolling teeth

3141. When the grinding plate 314 is in contact with the object to be detected, the grinding plate 314 drives the grinding teeth 3141 to rotate, and the grinding teeth 3141 grind the object to be detected. During the rotating process, the inlet fan blades 3142 always guide the outside air flow into the gap between the grinding teeth 3141 from the annular groove through the vent holes 3143. The gap between the grinding teeth 3141 is larger near the outer ring of the grinding plate 314, and the air flow will be discharged from the outside of the gap. On the one hand, this arrangement can take away the heat on the tooth surface of the rolling tooth 3141 in time through the flow of air flow, so as to avoid the burning of the object to be detected caused by local overheating; on the other hand, the air flow can also discharge the crushed object to be detected in time, so as to avoid the waste of productivity caused by repeated friction.

The working principle of the invention is as follows: the collecting barrel 11 is aligned with tree branches, and the handle 13 is rotated while squeezing hard, so that the annular sawtooth 14 moves to the inside of the tree through friction. When the tree extract 1s pressed into the collecting barrel 11, the pressure of the gas inside the collecting barrel 11 will increase, and the gas will be slowly discharged from the gas flow hole 112 along the gas flow groove 111. The extracted object to be detected 1s put into the cryostat, and the refrigerator 21 cools the interior of the cryostat 22. The extract to be detected will be frozen under the action of low temperature. At this time, the upper vibrating plate 23 moves down under the drive of the electric cylinder 26, and the upper vibrating plate 23 and the lower vibrating plate 24 clamp the object to be detected, and then start high- frequency vibration. When the object to be detected vibrates at high frequency, impurities such as silt will be thrown out under the action of vibration force. After being processed by the impurity removal assembly 2, the object to be detected will be put into the grinding cylinder 34 in the sealed box 33. At this time, the electromagnetic coil inside the support ring 36 is not energized, and the grinding cylinder 34 is directly pressed above the electronic scale 35, which weighs the object to be detected once. After weighing, the electromagnetic coil inside the support ring 36 is energized, and the electronic scale 35 is no longer directly affected by the gravity of the grinding cylinder 34. The grinding assembly 31 will grind the object to be detected by rotating and pressing down. After grinding, the vacuum pump 32 will continuously vacuumize the inside of the sealed box 33, and the gas pressure inside the sealed box 33 will decrease continuously, thus greatly reducing the boiling point of water inside the sealed box 33. The electromagnetic coil inside the support ring 36 is continuously energized, and the heat generated by the coil is transferred to the inside of the grinding drum 34 through the support ring 36. The temperature of the object to be detected in the grinding drum 34 rises, and the moisture in the object to be detected is easily vaporized due to the low-pressure boiling point reduction. After the moisture is fully vaporized, the electromagnetic coil is powered off, and the grinding drum 34 falls on the electronic scale 35 again for secondary weighing.

It should be noted that in this paper, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "including", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or equipment.

The above is only a preferred embodiment of the present invention, and it is not used to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for the skilled person to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features equally. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. À device for detecting the moisture content of forest combustibles, comprising an extraction assembly (1), an impurity removal assembly (2), a heating assembly (3) and an outer frame (4); the extraction assembly (1) 1s connected with the outer top of the outer frame (4), and the impurity removal assembly (2) and the heating assembly (3) are located inside the outer frame (4); the bottom of that impurity removal assembly (2) 1s fixedly connected with the bottom of the inner side of the outer frame (4); the top of that heating assembly (3) is fixedly connected with the top of the inn side of the outer frame (4); the top of that impurity removal assembly (2) is fixedly connected with the bottom of the heating assembly (3).

2. The device for detecting the moisture content of forest combustibles according to claim 1, wherein the extraction assembly (1) comprises a collecting cylinder (11), a connecting rod (12), a rotating handle (13) and an annular sawtooth (14); the sealed end of the collecting cylinder (11) is firmly connected with the connecting rod (12); the end of the connecting rod (12) far away from the collecting cylinder (11) is firmly connected with the rotating handle (13), and a plurality of air flow grooves (111) are arranged on the inner and outer sides of the side wall of the collecting cylinder (11), and the diameter of the collecting cylinder (11) gradually increases from the opening to the inside; the airflow groove (111) is provided with a vent hole (112) near the opening of the collecting cylinder (11); the annular sawtooth (14) is installed at the unsealed end of the collecting cylinder (11), and the side of the annular sawtooth (14) without serration is firmly connected with the end face of the collecting cylinder (11).

3. The device for detecting the moisture content of forest combustibles according to claim 2, wherein the extraction assembly further comprises a connecting rope (15) and a buckle (16); the buckle (16) is installed on that top of the outer frame (4); the connecting rod (12) can be clamped in the buckle (16); one end of that connected rope (15) is fixedly connected with the rotate handle (13), and the other end of the connecting rope (15) is fixedly connected with the buckle (16).

4. The device for detecting the moisture content of forest combustibles according to claim 1, wherein the impurity removal assembly (2) comprises a refrigerator (21), a cryostat (22), an upper vibrating plate (23), a lower vibrating plate (24), a heat insulation pad (25) and an electric cylinder (26); the cryostat (22) 1s positioned inside the outer frame (4), the bottom of the cryostat (22) 1s firmly connected with the bottom of the outer frame (4), and the top of the cryostat (22) 1s firmly connected with the heat insulation pad (25); the side of the heat insulation pad (25) far away from the cryostat (22) is firmly connected with the heating assembly (3), and the refrigerator (21) is installed on the side of the outer wall of the cryostat (22), and the refrigerator (21) is communicated with the inside of the cryostat (22) through a pipeline; vibrators are arranged inside the upper vibrating plate (23) and the lower vibrating plate (24), and horizontal vibrating surfaces are arranged on the upper vibrating plate (23) and the lower vibrating plate (24); the vibrator is connected with the vibrating surfaces of the upper vibrating plate (23) and the lower vibrating plate (24); the side of the lower vibrating plate (24) far away from the vibrating surface is firmly connected with the inner bottom edge of the cryostat (22); the side of the upper vibrating plate (23) far away from the vibrating surface is firmly connected with the output shaft of the electric cylinder (26); the end of the electric cylinder (26) far away from the output shaft is fixedly connected with the top inside the cryostat (22).

5. The device for detecting the moisture content of forest combustibles according to claim 4, wherein a plurality of vibration probes (27) are arranged on the vibration surfaces of the upper vibrating plate (23) and the lower vibrating plate (24), and the thicknesses of the vibration probes (27) are different.

6. The device for detecting the moisture content of forest combustibles according to claim 4, wherein the heating assembly (3) comprises a grinding assembly (31), a vacuum pump (32), a sealed box (33), a grinding cylinder (34), an electronic scale (35), a supporting ring (36) and a supporting rod (37); the sealed box (33) is located inside the outer frame (4), the top of the sealed box (33) is firmly connected with the top of the outer frame (4), and the bottom of the sealed box (33) is firmly connected with the side of the heat insulation pad (25) far away from the cryostat (22); the vacuum pump (32) is installed on the outer side wall of the sealed box (33), and the vacuum pump (32) is communicated with the inside of the sealed box (33) through a pipeline; the grinding assembly (31) is tightly connected with the top inside the sealed box (33); the grinding cylinder (34) is installed inside the support ring (36); an electromagnetic coil is arranged inside the support ring (36), and when the electromagnetic coil is electrified, the support ring (36) is firmly connected with the grinding cylinder (34); the supporting ring (36) is firmly connected with the supporting rod (37), and the end of the supporting rod (37) far away from the supporting ring (36) is firmly connected with the inner side wall of the sealed box (33); the electronic scale (35) is firmly connected with the bottom side of the inner wall of the sealed box (33), a tray is arranged above the electronic scale (35), and the tray 1s positioned right below the grinding cylinder (34).

7. The device for detecting the moisture content of forest combustibles according to claim 1, wherein the grinding assembly (31) comprises a linear motor (311), a rotary motor (312), a motor mounting seat (313) and a grinding plate (314); the end of the linear motor (311) far away from the output shaft is firmly connected with the inner top of the sealing box (33), and the upper surface of the motor mounting seat (313) is firmly connected with the output shaft of the linear motor (311); the lower surface of the motor mounting seat (313) is fixedly connected with one end of the rotary motor (312) far away from the output shaft; the output shaft of that rotary motor (312) is firmly connected with the grinding plate (314).

8. The device for detecting the moisture content of forest combustibles according to claim 7, wherein a circular through-hole is arranged in the middle of the grinding plate (314); the output shaft of that rotate motor (312) is inserted into the circular through hole, and the output shaft of the rotate motor (312) is firmly connected with the grinding plate (314), and a plurality of rolling teeth (3141) are arrange on one side of the grinding plate (314) far away from the rotary motor (312); the rolling teeth (3141) are uniformly distributed around the center of the grinding plate (314), and one side of the grinding plate (314) close to the rotary motor (312) is provided with an inlet fan blade (3142); the air inlet fan blade (3142) is installed in an annular groove formed on the end face of the grinding plate (314); the grinding plate (314) is also provided with a vent hole (3143); one end of the vent hole (3143) is connected with the annular groove, and the other end of the vent hole (3143) 1s connected with the gap between the rolling teeth (3141).

PATENTANSPRÜCHE „50077

1. Eine Vorrichtung zum Prüfen des Feuchtigkeitsgehalts von Waldbrennstoffen ist dadurch gekennzeichnet, dass die eine Extraktionskomponente (1), eine Komponente zur Entfernung von Verunreinigungen (2), eine Heizungskomponente (3) und einen Außenrahmen (4) umfasst; die Extraktionskomponente (1) ist mit dem äußeren Oberteil des Außenrahmens (4) verbunden, die Komponente zur Entfernung von Verunreinigungen (2) und die Heizungskomponente (3) befinden sich innerhalb des Außenrahmens (4); der Boden der Komponente zur Entfernung von Verunreinigungen (2) ist fest mit dem Boden der Innenseite des Außenrahmens (4) verbunden; das Oberteil dieser Heizungskomponente (3) ist fest mit dem Oberteil der Innenseite des Außenrahmens (4) verbunden; das Oberteil dieser Komponente zur Entfernung von Verunreinigungen (2) ist fest mit der Unterseite der Heizungskomponente (3) verbunden.

2. Die Vorrichtung zum Prüfen des Feuchtigkeitsgehalts von Waldbrennstoffen nach Anspruch 1 ist dadurch gekennzeichnet, dass die Extraktionskomponente (1) einen Sammelzylinder (11), eine Verbindungsstange (12), einen Drehgriff (13) und einen ringförmigen Sägezahn (14) umfasst; das abgedichtete Ende des Sammelzylinders (11) ist fest mit der Verbindungsstange (12) verbunden; das vom Sammelzylinder (11) entfernte Ende der Verbindungsstange (12) ist fest mit dem Drehgriff (13) verbunden; eine Vielzahl von Luftströmungsnuten (111) sind an den Innen- und Außenseiten der Seitenwand des Sammelzylinders (11) angeordnet; der Durchmesser des Sammelzylinders (11) von der Öffnung nach innen allmählich zunimmt; die Luftströmungsnuten (111) ist mit einem Entlüftungsloch (112) in der Nähe der Öffnung des Sammelzylinders (11) versehen; der ringförmige Sägezahn (14) ist am unverschlossenen Ende des Sammelzylinders (11) angebracht; und die Seite des ringförmigen Sägezahns (14) ohne Verzahnung ist fest mit der Endfläche des Sammelzylinders (11) verbunden.

3. Die Vorrichtung zum Prüfen des Feuchtigkeitsgehalts von Waldbrennstoffen nach Anspruch 2 ist dadurch gekennzeichnet, dass die Extraktionskomponente ferner ein Verbindungsseil (15) und eine Schnalle (16) umfasst; die Schnalle (16) ist an der

Oberseite des AuBenrahmens (4) angebracht; die Verbindungsstange (12) kann in der 500717 Schnalle (16) eingeklemmt werden; ein Ende dieses Verbindungsseils (15) ist fest mit dem Drehgriff (13) verbunden, und das andere Ende des Verbindungsseils (15) ist fest mit der Schnalle (16) verbunden.

4. Das Vorrichtung zum Prüfen des Feuchtigkeitsgehalts von Waldbrennstoffen nach Anspruch 1 ist dadurch gekennzeichnet, dass die Komponente zur Entfernung von Verunreinigungen (2) eine Kältemaschine (21), einen Kryostaten (22), eine obere Vibrationsplatte (23), eine untere Vibrationsplatte (24), ein Wärmeisolierkissen (25) und einen elektrischen Zylinder (26) umfasst; der Kryostat (22) innerhalb des Außenrahmens (4) positioniert ist, die Unterseite des Kryostaten (22) fest mit der Unterseite des Außenrahmens (4) verbunden ist und die Oberseite des Kryostaten (22) fest mit dem Wärmeisolationskissen (25) verbunden ist; die dem Kryostaten (22) abgewandte Seite des Wärmeisolierkissens (25) ist fest mit der Heizungskomponente (3) verbunden, die Kältemaschine (21) ist auf der Seite der Außenwand des Kryostaten (22) installiert und durch eine Rohrleitung mit dem Inneren des Kryostaten (22) verbunden; innerhalb der oberen Vibrationsplatte (23) und der unteren Vibrationsplatte (24) sind Rüttler angeordnet, und auf der oberen Vibrationsplatte (23) und der unteren Vibrationsplatte (24) sind horizontale Vibrationsflächen angeordnet; der Vibrator ist mit den Vibrationsflächen der oberen Vibrationsplatte (23) und der unteren Vibrationsplatte (24) verbunden; die der Vibrationsfläche abgewandte Seite der unteren Vibrationsplatte (24) ist fest mit dem inneren unteren Rand des Kryostaten (22) verbunden; die von der Vibrationsfläche abgewandte Seite der oberen Vibrationsplatte (23) ist fest mit der Ausgangswelle des elektrischen Zylinders (26) verbunden; das von der Ausgangswelle abgewandte Ende des elektrischen Zylinders (26) ist fest mit der Oberseite im Inneren des Kryostaten (22) verbunden.

5. Die Vorrichtung zum Prüfen des Feuchtigkeitsgehalts von Waldbrennstoffen nach Anspruch 4 ist dadurch gekennzeichnet, dass mehrere Vibrationssonden (27) auf den Vibrationsflächen der oberen Vibrationsplatte (23) und der unteren Vibrationsplatte (24) angeordnet sind, und die Dicken der Vibrationssonden (27) unterschiedlich sind.

6. Die Vorrichtung zum Prüfen des Feuchtigkeitsgehalts von Waldbrennstoffen nach 500717 Anspruch 4 ist dadurch gekennzeichnet, dass die Heizungskomponente (3) ein Mahlkomponente (31), eine Vakuumpumpe (32), einen abgedichteten Kasten (33), einen Mahlzylinder (34), eine elektronische Waage (35), einen Tragring (36) und eine Stützstange (37) umfasst; der abgedichtete Kasten (33) befindet sich innerhalb des Außenrahmens (4), die Oberseite des abgedichteten Kastens (33) ist fest mit der Oberseite des Außenrahmens (4) verbunden, und die Unterseite des abgedichteten Kastens (33) ist fest mit der vom Kryostaten (22) entfernten Seite des Wärmeisolierkissens (25) verbunden; die Vakuumpumpe (32) ist an der äußeren Seitenwand des abgedichteten Kastens (33) installiert und über eine Rohrleitung mit dem Inneren des abgedichteten Kastens (33) verbunden ist; die Mahlkomponente (31) ist fest mit dem Oberteil im Inneren des abgedichteten Kastens (33) verbunden; der Mahlzylinder (34) ist im Inneren des Tragrings (36) installiert; eine elektromagnetische Spule ist im Inneren des Tragrings (36) angeordnet, und wenn die elektromagnetische Spule unter Strom gesetzt wird, ist der Tragring (36) fest mit dem Schleifzylinder (34) verbunden, ist der Tragring (36) fest mit der Stützstange (37) verbunden, ist das vom Tragring (36) entfernte Ende der Stützstange (37) fest mit der inneren Seitenwand des abgedichteten Kastens (33) verbunden, und ist die elektronische Waage (35) fest mit der Unterseite der Innenwand des abgedichteten Kastens (33) verbunden; ein Tablett ist über der elektronischen Waage (35) angeordnet und befindet sich direkt unter dem Mahlzylinder (34).

7. Die Vorrichtung zum Prüfen des Feuchtigkeitsgehalts von Waldbrennstoffen nach Anspruch 1 ist dadurch gekennzeichnet, dass die Mahlkomponente (31) umfasst einen Linearmotor (311), einen Rotationsmotor (312), einen Motoreinbausitz (313) und eine Walzplatte (314); das von der Ausgangswelle entfernte Ende des Linearmotors (311) ist fest mit der inneren Oberseite des abgedichteten Kastens (33) verbunden, und die Oberseite des Motoreinbausitzes (313) ist fest mit der Ausgangswelle des Linearmotors (311) verbunden; die untere Fläche des Motoreinbausitzes (313) ist fest mit einem von der Ausgangswelle entfernten Ende des Rotationsmotors (312)

verbunden; die Ausgangswelle dieses Rotationsmotors (312) ist fest mit der 500717 Walzplatte (314) verbunden.

8. Die Vorrichtung zum Prüfen des Feuchtigkeitsgehalts von Waldbrennstoffen nach Anspruch 7 ist dadurch gekennzeichnet, dass in der Mitte der Walzplatte (314) ein kreisrundes Durchgangsloch angeordnet ist; die Ausgangswelle desRotationsmotors (312) wird in das kreisförmige Durchgangsloch eingeführt und ist fest mit der Walzplatte (314) verbunden; eine Vielzahl von Walzzähnen (3141) sind auf einer Seite der Walzplatte (314) weit weg vom Rotationsmotor (312) angeordnet; die Walzzähne (3141) sind gleichmäßig um die Mitte der Walzplatte (314) verteilt, und eine Seite der Walzplatte (314) in der Nähe des rotierenden Motors (312) ist mit einem Ventilatorflügel für Lufteintritt (3142) versehen; der Ventilatorflügel für Lufteintritt (3142) ist in einer ringförmigen Nut installiert, die an der Endfläche der Rollplatte (314) ausgebildet ist; die Walzplatte (314) ist außerdem mit einem Luftloch (3143) versehen; ein Ende des Luftlochs (3143) ist mit der Ringnut verbunden und das andere Ende des Luftlochs (3143) ist mit dem Spalt zwischen den Walzzähnen (3141) verbunden.