A multifunctional biomass compression molding device

Abstract

The present invention discloses a multifunctional biomass compression molding device, which relates to the technical fields of agricultural material mechanics and rheological property research. The device comprises a compression cylinder, a bottom frame, a pull-out support plate, and a pressure head. The compression cylinder is disposed on the top of the bottom frame, the pull-out support plate is movably disposed below the compression cylinder, and the pressure head is movably disposed within the compression cylinder. The device has functions such as switching between open and closed compression, switching between hot and cold compression modes, and switching between preheated and non-preheated hot pressing. The device can be installed on a universal testing machine or related compression machinery as needed, making it suitable for compression molding testing, research, and processing of different types of biomass materials.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural material mechanics and rheological properties research, in particular to a multifunctional biomass compression molding device. Background Art

[0002] Grass materials are loose and have low density, making them difficult to collect, store, and transport. The high costs associated with handling and transport severely hinder their subsequent utilization and development. The emergence of compression technology has become a key solution to this problem. Widely used feed compression processes, including grass baling and grass briquetting, reduce grass storage space and improve handling and transportation efficiency.

[0003] Biomass resources are increasingly valued, owing to their vast reserves, widespread availability, and renewable nature. Biomass materials, currently the subject of biomass resource utilization, primarily come from plant residues and livestock and poultry manure from agricultural and forestry production and processing, such as straw, forage grass, wood chips, fallen leaves, branches, potato residue, and rice husks. These agricultural and forestry wastes are often in loose form, and compression molding is often used to facilitate their transportation, storage, and use, thereby improving utilization efficiency and expanding utilization options.

[0004] Biomass compression molding technology and its applications have long been a research hotspot in related fields. Compression molding devices can be categorized into open and closed compression molding devices based on the compression chamber structure, and hot and cold compression molding devices based on whether or not heating is used during compression. Hot compression molding devices can be further categorized into preheating and non-preheating types. Conventional compression devices typically only simultaneously perform one or two of the following functions: cold, hot, closed, or open compression. Consequently, during actual processing, production, and testing, devices must be frequently selected and replaced based on material characteristics and molding conditions. This impacts test results, molding effects, and production efficiency of biomass compression under various processing conditions. Currently, no multifunctional compression molding device has been developed that combines cold, hot, closed, and open compression. Furthermore, existing biomass compression devices do not distinguish between a storage area and a compression area, nor do they utilize heating in both the storage and compression areas to integrate both preheating and non-preheating hot pressing functions within a single compression molding device. Summary of the Invention

[0005] To address the above technical problems, the present invention provides a multifunctional biomass compression molding device with functions such as switching between open and closed compression, switching between hot and cold compression modes, and switching between preheated hot pressing and non-preheated hot pressing. The device can be installed on a universal testing machine or related compression machinery as needed to be suitable for compression molding test research and processing production of different types of biomass materials.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a multifunctional biomass compression molding device, comprising a compression cylinder, a bottom frame, a pull-out support plate and a pressure head; the compression cylinder is arranged on the top of the bottom frame, the pull-out support plate is movably arranged below the compression cylinder, and the pressure head is movably arranged in the compression cylinder.

[0008] Optionally, a feeding device is provided above the compression cylinder, and the bottom end of the pressure head slides along the feeding device and the inside of the compression cylinder.

[0009] Optionally, an electric heating ring I is provided outside the feeding device.

[0010] Optionally, an open slot is provided on the lower side wall of the feeding device, and a feeding insert is movably provided in the open slot.

[0011] Optionally, the feeding device includes a feeding port and a feeding barrel; the feeding port is a conical cylindrical body, the feeding barrel is a cylindrical body, the feeding barrel is arranged at the smaller end of the feeding port, the larger end of the feeding barrel is provided with a feeding port earring, and the feeding port earring is provided with a flip cover.

[0012] Optionally, a feeder is provided above the compression cylinder, the feeder is a cylindrical structure, and a transversely extending guide groove is provided on one side of the top of the feeder.

[0013] Optionally, an electric heating ring II is provided on the outside of the compression cylinder.

[0014] Optionally, the pressure head includes a pressure rod and a piston head, and the piston head is arranged at the bottom of the pressure rod.

[0015] Optionally, the pressure head includes a pressure rod, an upper pressure head, a lower pressure head, a guide rod and a nut; the upper pressure head is arranged at the bottom of the pressure rod, two through holes are provided on the upper pressure head, and a guide rod is provided in each through hole, the lower pressure head is arranged at the bottom of the guide rod, and the nut is arranged at the top of the guide rod.

[0016] Optionally, a compression cylinder bushing is provided in the compression cylinder, a through hole is provided inside the compression cylinder bushing, and the top of the through hole extends outward into a cone shape.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] 1. It integrates the functions of cold pressing, hot pressing, closed compression and open compression. During operation, the functions can be switched by replacing the parts of each part.

[0019] 2. A material storage area is provided. Its core component, the feed mechanism, is used to store the material to be compressed. The feed mechanism is heated and insulated by the electric heating coil II, preheating the material. After preheating, the material can be dropped into the compression zone by pulling the feed plate. The upper opening of the compression cylinder in the compression zone is designed with a tapered mouth to facilitate the material's drop into the compression zone. Because the feed mechanism bears less load, its wall thickness is relatively thin, far less than that of the compression cylinder, thereby improving preheating efficiency and reducing hot pressing energy consumption. Furthermore, to enhance preheating efficiency and reduce heat loss, a flap is installed at the feed mechanism entrance. This flap opens when feeding and closes when heating and insulating.

[0020] 3. Two different compression cylinder structures are available: closed and open, to meet different compression requirements. Both types of compression cylinders are welded together by a cylinder body and a flange for connection to the blanking area. Both types of compression cylinders are equipped with an external electric heating coil I, which can be used for heat preservation during preheating hot pressing and heating during non-preheating hot pressing.

[0021] 4. The open compression cylinder body and the compression cylinder bushing are assembled to achieve open compression operation. The outer wall of the bushing with a larger diameter matches the inner wall of the open compression cylinder. By replacing the compression cylinder bushing with different inner hole sizes and taper angles, the aspect ratio of the open compression cavity can be changed to meet the different requirements of open compression molding processing or testing.

[0022] The inner cavity of the open compression cylinder is a stepped hole, and the outer surface of the compression cylinder bushing is a stepped cylindrical surface. Therefore, when the compression cylinder bushing is inserted into the inner cavity of the open compression cylinder, its shaft shoulder can be stuck in the step of the stepped hole for positioning, and when compressing the material, the axial force exerted on the compression cylinder is transmitted to the pressure plate and the pad connected to the compression cylinder flange, and then transmitted to the bottom frame, so that the axial force of the compression cylinder is more strongly supported during the compression process, so as to increase the maximum axial compression force that the device can withstand during open compression and improve the forming effect of open compression.

[0023] 5. The blanking function can be controlled and adjusted according to demand, which is achieved by the pull-out support plate. The pull-out support plate adopts a dual-station structure. When it is in station I, closed compression molding can be performed. After molding, the pull-out support plate is pulled to station II (station with holes) to complete blanking with the assistance of the pressure head. In addition, when the pull-out support plate is in station II, open compression molding and blanking can also be performed.

[0024] To facilitate the pullout support plate's movement, the blanking area utilizes a stacked structure consisting of a pressure plate, a backing plate, and a base frame. These plates are screwed together, and the backing plate provides a certain height between the pressure plate and the groove on the top of the base frame to accommodate and position the pullout support plate. Furthermore, stepped surfaces are provided at each end of the pullout support plate to ensure proper positioning of stations I and II. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic structural diagram of the multifunctional biomass compression molding device of the present invention;

[0027] Figure 2 This is a schematic structural diagram of another embodiment of the multifunctional biomass compression molding device of the present invention;

[0028] Figure 3 This is a schematic cross-sectional view of the multifunctional biomass compression molding device of the present invention in use;

[0029] Figure 4 This is a schematic structural diagram of the flip cover in the multifunctional biomass compression molding device of the present invention;

[0030] Figure 5 This is a schematic diagram of the side structure of the flip cover in the multifunctional biomass compression molding device of the present invention;

[0031] Figure 6 This is a schematic structural diagram of the feed barrel in the multifunctional biomass compression molding device of the present invention;

[0032] Figure 7 This is a schematic structural diagram of the compression cylinder in the multifunctional biomass compression molding device of the present invention;

[0033] Figure 8 This is a structural schematic diagram of another embodiment of the compression cylinder in the multifunctional biomass compression molding device of the present invention;

[0034] Figure 9 This is a schematic diagram of the longitudinal cross-sectional structure of the bottom frame of the multifunctional biomass compression molding device of the present invention;

[0035] Figure 10 This is a schematic diagram of the transverse cross-sectional structure of the bottom frame of the multifunctional biomass compression molding device of the present invention;

[0036] Figure 11 This is a schematic structural diagram of the pull-out support plate in the multifunctional biomass compression molding device of the present invention;

[0037] Figure 12 This is a schematic structural diagram of the piston-type pressing head in the multifunctional biomass compression molding device of the present invention;

[0038] Figure 13 This is a schematic structural diagram of a separate press head in the multifunctional biomass compression molding device of the present invention;

[0039] Figure 14 This is a schematic cross-sectional view of the multifunctional biomass compression molding device of the present invention using a piston-type pressing head;

[0040] Figure 15 Schematic diagram of the cross-sectional structure of the feeder in the multifunctional biomass compression molding device of the present invention;

[0041] Figure 16 This is a schematic structural diagram of the sensor touch panel in the multifunctional biomass compression molding device of the present invention;

[0042] Figure 17 is the stress-strain test curve;

[0043] Figure 18 This is the strain-time test curve of creep holding stage;

[0044] Figure 19 This is the strain-time test curve in the creep unloading stage;

[0045] Figure 20 This is the strain-time test curve of the complete creep pressure-holding unloading process;

[0046] Figure 21 This is the fitting effect diagram of the strain-time test curve and the model curve in the creep holding stage.

[0047] Explanation of the accompanying reference numerals: 1. pressure head; 2. bottom frame; 3. pad; 4. pressure plate; 5. compression cylinder; 6. electric heating coil I; 7. electric heating coil II; 8. flip cover; 9. feeding device; 10. feeding plug plate; 11. fastening ring; 12. pull-out support plate; 91. feeding port; 92. feeding port earring; 93. feeding cylinder; 111. piston head; 112. pressure rod; 121. upper pressure head; 122. lower pressure head; 123. guide rod; 124. nut; 125. sensor touch panel; 21. bottom plate; 22. vertical plate; 23. top plate; 24. rib plate; 52. compression cylinder flange; 53. compression cylinder bushing; 511. closed compression cylinder body; 512. open compression cylinder body. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] Example 1:

[0050] like Figure 1 As shown, this embodiment provides a multifunctional biomass compression molding device, including a compression cylinder 5, a bottom frame 2, a pull-out support plate 12 and a pressure head 1; the compression cylinder 5 is arranged on the top of the bottom frame 2, the pull-out support plate 12 is movably arranged below the compression cylinder 5, and the pressure head 1 is movably arranged in the compression cylinder 5.

[0051] In this specific embodiment, a feeding device 9 is provided above the compression cylinder 5, and the bottom end of the pressure head 1 slides along the feeding device 9 and the inside of the compression cylinder 5. An electric heating coil I6 is provided on the outside of the feeding device 9. An open groove is provided on the lower side wall of the feeding device 9, and a feed insert 10 is movably provided in the open groove. The feeding device 9 includes a feed port 91 and a feed cylinder 93; the feed port 91 is a conical cylindrical body, and the feed cylinder 93 is a cylindrical body. The feed cylinder 93 is provided at the smaller end of the feed port 91, and a feed port earring 92 is provided at the larger end of the feed cylinder 93, and a flip cover 8 is provided on the feed port earring 92. An electric heating coil II7 is provided on the outside of the compression cylinder 5. The upper end opening of the compression cylinder 5 is configured as a cone. The pressure head 1 includes a pressure rod 112 and a piston head 111, and the piston head 111 is provided at the bottom of the pressure rod 112.

[0052] In a more specific embodiment, Figure 9 As shown, the base frame 2 includes a bottom plate 21, vertical plates 22, a top plate 23, and ribs 24. The vertical plates 22 are positioned on either side, the top plate 23 is positioned on top of the vertical plates 22, and the bottom plate 21 is positioned at the bottom of the vertical plates 22. The bottom plate 21, top plate 23, and vertical plates 22 form a rectangular frame structure, with ribs 24 positioned at the four inner corners of the rectangular frame structure. A pad 3 and a pressure plate 4 are positioned above the top plate 23. A through-groove is provided in the center of the pad 3. The compression cylinder 5 is bolted to the pressure plate 4, and the pull-out support plate 12 is inserted through the through-groove. The pressure plate 4 is bolted to the pad 3.

[0053] like Figure 8 As shown, the compression cylinder 5 includes a compression cylinder flange 52 and a closed compression cylinder body 511; the bottom of the closed compression cylinder body 511 passes through the middle of the compression cylinder flange 52, and threaded holes are arranged around the compression cylinder flange 52, which are used to connect with the pressure plate 4.

[0054] An inward-retracted stepped limit end face is provided on the top outer wall of the closed compression cylinder body 511. The bottom of the feed cylinder 93 is sleeved on the closed compression cylinder body 511. The bottom end face of the feed cylinder 93 is in contact with the stepped limit end face. A fastening ring 11 is provided on the outer side of the bottom of the feed cylinder 93, so that the feed cylinder 93 can be detachably fixed on the compression cylinder 5.

[0055] like Figure 11 As shown, the pull-out support plate 12 is a plate-like structure with stepped surfaces extending toward both ends. A through hole is provided at one end near the pull-out support plate 12, representing position II of the pull-out support plate 12. Position I is located between position II and the other end of the pull-out support plate 12. A handle is also provided at the other end of the pull-out support plate 12. By pushing or pulling the handle, position I or position II of the pull-out support plate 12 is positioned directly below the closed compression cylinder body 511, thereby controlling the connection between the bottom of the closed compression cylinder body 511 and the bottom frame 2.

[0056] like Figure 12 As shown, in order to ensure that the axis of the pressure rod 112 and the end face of the piston head 111 meet certain verticality requirements, the internal threaded hole on the piston head 111 is designed as a through hole, and the external thread of the pressure rod 112 and the internal thread on the piston head 111 are turned to ensure that the external threaded end face of the pressure rod 112 and the bottom end face of the piston head 111 are coplanar, thereby ensuring the verticality requirements; the external thread on the top of the pressure rod 112 is used to connect to the test platform or machine.

[0057] During use, push the pull-out support plate 12 to the state where the I station is directly below the closed compression cylinder body 511, insert the feed insert plate 10, open the flip cover 8, and feed the biomass material from the feed port 91. After the material is heated to the specified temperature by the electric heating ring II7, pull out the feed insert plate 10 to allow the material to fall into the compression cylinder 5. Drive the pressure rod 112 through the test platform or machine to press down the piston head 111 to compress the material. After being compressed to a certain load and maintained for a period of time, the test platform or machine stops applying pressure, pulls the pull-out support plate 12 to make the II station directly below the closed compression cylinder body 511, and presses the formed material block downward through the piston head 111 to complete the blanking in the bottom frame 2 of the blanking area.

[0058] Example 2:

[0059] This embodiment is an improved embodiment based on the first embodiment. Figure 13As shown, the pressure head 1 includes a pressure rod 112, an upper pressure head 121, a lower pressure head 122, a guide rod 123, a nut 124 and a sensor touch plate 125; the upper pressure head 121 is arranged at the bottom of the pressure rod 112, and two through holes are provided on the upper pressure head 121, each of which is provided with a guide rod 123, the lower pressure head 122 is arranged at the bottom of the guide rod 123, and the nut 124 is arranged at the top of the guide rod 123 for fixing the sensor touch plate 125.

[0060] The test device or related machinery drives the compression rod 112 downward along its axis. The lower punch 122 first contacts the material. The upper punch 121 then continues to move downward relative to the lower punch 122 and the guide rod 123. The guide rod 123 then passes through a through hole in the upper punch 121 and moves upward relative to the upper punch 121. When the upper punch 121 moves downward until it contacts the lower punch 122, the two heads 121 and 122 move downward together, beginning to compress the material. After reaching a certain load and maintaining compression for a period of time, the upper punch 121 moves upward a distance to separate from the lower punch 122, entering the unloading phase. During this phase, the lower punch 122 remains in contact with the material, facilitating measurement of rebound deformation after forming or deformation recovery after unloading in creep tests. The lower ram 122 is connected to a displacement sensor via a guide rod 123 and a sensor touch plate 125. When the material rebounds, the contact between the lower ram 122, the guide rod 123, and the sensor touch plate 125 triggers the displacement sensor, enabling measurement of the post-unloading rebound deformation. After the unloading phase and measurement are complete, the pull-out support plate 12 is withdrawn to station II, and the lower ram 122 is used to push the formed material block downward, completing the blanking process within the bottom frame 2 of the blanking area.

[0061] In order to verify the technical effect of the present invention, the following experiments were carried out:

[0062] The multifunctional biomass compression molding device is installed on a universal testing machine. After feeding the mixed biomass material of straw and potato residue, the upper pressing head 121 and the lower pressing head 122 move downward together to start loading and compressing the material. The stress-strain curve of the loading stage is as follows: Figure 17 When the pressure is loaded to 17MPa, the pressure is maintained and kept constant for 718 seconds. The strain-time curve obtained during the pressure holding process is as follows: Figure 18 As shown; then the upper pressure head 121 returns upward to the compression starting position and separates from the lower pressure head 122, entering the unloading stage. At this time, the lower pressure head 122 is still in contact with the material. After unloading, the molding material produces deformation recovery in the opposite direction of compression, pushing up the lower pressure head, and through the guide rod 123 on it, the sensor touch plate 125 triggers the displacement sensor. The curve of the displacement change over time in the unloading stage is shown in Figure 19. Figure 18 and Figure 19 It can be seen that by performing the operations of loading, holding pressure and unloading by the device of the present invention, the strain-time curve of the creep process of the straw and potato residue mixture can be fully obtained, as shown in FIG. Figure 20 To further verify the accuracy of the curve, the following verification analysis was conducted: the four-element Burgers model, which is commonly used to describe the creep behavior of materials, was selected to fit the creep holding stage test curve. The model is as follows:

[0063]

[0064] Where: ε——strain;

[0065] σ0——constant stress (σ0=17MPa in this embodiment);

[0066] E0——initial elastic modulus;

[0067] E r ——delayed elastic modulus;

[0068] T r - delay time;

[0069] η——viscosity coefficient;

[0070] t——time;

[0071] against Figure 18 The obtained creep holding stage test curve was fitted and regressed using the four-element Burgers model, and the fitting effect was obtained as follows: Figure 21 As shown, the fitting determination coefficient R 2 =0.9986, it can be seen that the device of the present invention can be used to complete the creep test of agricultural materials and can accurately measure the creep test curve.

[0072] Example 3:

[0073] This embodiment is an improved embodiment based on the first embodiment, and is used for open compression of biomass materials, such as Figure 7 As shown, a compression cylinder bushing 53 is provided in the compression cylinder 5, and a through hole is provided inside the compression cylinder bushing 53, and the top of the through hole extends outward into a cone shape.

[0074] like Figure 14As shown, the compression cylinder 5 with the compression cylinder sleeve 53 is mounted on the top plate 4 mounted above the bottom frame 2. During operation, the storage area cover 8 is opened, and biomass material is fed into the feed cylinder 93 through the feed port 91 of the feed device. The electric heating coil II7 is energized to heat the material. After the material is heated to a specified temperature, the feed plate 10 is withdrawn to allow the material to fall into the compression cylinder 5 in the compression zone. The electric heating coil I6 is energized to heat the material to a predetermined temperature (heating can also be started before feeding, if necessary) to ensure that the material remains within a certain temperature range during the compression process. The piston ram 1 is driven downwardly along the axis by a test device or related machinery, compressing the material in the compression cylinder 5. As the internal diameter of the open compression cylinder 5 decreases, the material gradually forms under the action of extrusion and friction, and is forced downward from the minimum diameter of the compression cylinder sleeve 53 (at this time, the pull-out support plate 12 is in position II), where the material is discharged.

[0075] Example 4:

[0076] This embodiment is an improved embodiment based on the first embodiment. Figure 15 As shown, a feeder is provided above the compression cylinder 5. The feeder is a cylindrical structure, and a transversely extending guide groove is provided on one side of the top of the feeder.

[0077] During operation, the biomass material is fed into the compression cylinder 5 by the feeder. At this time, the pulling support plate 12 is in the I position. The piston pressure head 1 is driven downward along the axis by the test device or related machines to compress the material in the compression cylinder 5. After the compression is completed, the pulling support plate 12 is pulled to the II position, and the piston pressure head 1 is used to press the formed material block downward to complete the blanking in the bottom frame 2 of the blanking area.

[0078] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description. It is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

[0079] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A multifunctional biomass compression molding device, characterized in that: It includes a compression cylinder, a bottom frame, a pull-out support plate and a pressure head; The compression cylinder is arranged on the top of the bottom frame, the pull-out support plate is movably arranged below the compression cylinder, and the pressure head is movably arranged in the compression cylinder; A feeding device is provided above the compression cylinder, and the bottom end of the pressure head slides along the feeding device and the inside of the compression cylinder; an open groove is provided on the lower side wall of the feeding device, and a feeding insert is movably provided in the open groove; The bottom frame includes a bottom plate, a vertical plate, a top plate and a rib plate; the vertical plates are arranged on both sides, the top plate is arranged on the top of the vertical plates, and the bottom plate is arranged at the bottom of the vertical plates. The bottom plate, the top plate and the vertical plates form a rectangular frame structure, and the rib plates are arranged at the four inner corners of the rectangular frame structure; a pad and a pressure plate are arranged above the top plate, and a through groove is provided in the middle of the pad, and the pull-out support plate is arranged through the through groove; The pull-out support plate is a plate-like structure, and both ends of the pull-out support plate are provided with step surfaces extending to both sides. A through hole is provided on one end close to the pull-out support plate, which is the II station of the pull-out support plate, and the area between the II station and the other end of the pull-out support plate is the I station. A handle is also provided at the other end of the pull-out support plate; by pushing or pulling the handle, the I station or the II station of the pull-out support plate is located directly below the compression cylinder, thereby controlling the connection and disconnection between the bottom of the compression cylinder and the bottom frame.

2. The multifunctional biomass compression molding device according to claim 1, characterized in that: An electric heating ring I is provided outside the feeding device.

3. The multifunctional biomass compression molding device according to claim 1, characterized in that: The feeding device includes a feeding port and a feeding barrel; the feeding port is a conical cylindrical body, the feeding barrel is a cylindrical body, the feeding barrel is arranged at the smaller end of the feeding port, the larger end of the feeding port is provided with a feeding port earring, and the feeding port earring is provided with a flip cover.

4. The multifunctional biomass compression molding device according to claim 1, characterized in that: A feeder is provided above the compression cylinder. The feeder is a cylindrical structure. A guide groove extending obliquely upward is provided on one side of the top of the feeder.

5. The multifunctional biomass compression molding device according to claim 1, characterized in that: An electric heating ring II is arranged outside the compression cylinder.

6. The multifunctional biomass compression molding device according to claim 1, characterized in that: The pressure head includes a pressure rod and a piston head, and the piston head is arranged at the bottom of the pressure rod.

7. The multifunctional biomass compression molding device according to claim 1, characterized in that: The pressure head includes a pressure rod, an upper pressure head, a lower pressure head, a guide rod and a nut; the upper pressure head is arranged at the bottom of the pressure rod, and two through holes are provided on the upper pressure head, and a guide rod is provided in each of the through holes, the lower pressure head is arranged at the bottom of the guide rod, and the nut is arranged at the top of the guide rod.

8. The multifunctional biomass compression molding device according to claim 1, characterized in that: A compression cylinder bushing is provided in the compression cylinder, a through hole is provided inside the compression cylinder bushing, and the top of the through hole extends outwards into a cone shape.

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