Continuous drum-type chip digester

Abstract

The application discloses a continuous drum-type wood chip digester, which comprises a drum, a driving mechanism connected to the drum to drive the rotation of the drum, a feeding end and a discharging end of the drum, wherein the drum is downwardly inclined from the feeding end to the discharging end, a feeding mechanism connected to the feeding end of the drum, a feeding sealing device arranged between the feeding mechanism and the feeding end, a discharging mechanism connected to the discharging end of the drum, a discharging sealing device arranged between the discharging mechanism and the discharging end, and a lifting plate group arranged in the drum. The application integrates the feeding, the cooking and the discharging into one machine, and the drum can continuously feed and discharge in a non-stop state, thereby ensuring the continuous operation of the drum-type digester with large capacity, continuously feeding, reacting and discharging the raw materials under the premise of low energy consumption, reducing the investment, optimizing the process, improving the production efficiency and the yield.

Description

Technical Field

[0001] This invention relates to the field of wood chip processing technology in papermaking equipment, and specifically to a rotary drum wood chip cooker for continuous operation. Background Technology

[0002] The following are some representative examples of traditional, old-fashioned wood chip processing equipment and processes:

[0003] 1. Pit-type intermittent type has a small output. Because feeding, cooking and discharging need to be operated independently to meet the working requirements of the cooking machine, it cannot be continuous, occupies a large area and is inconvenient to operate.

[0004] 2. The wooden silo type has a small diameter, low height, short cooking time, low reaction degree, and poor softening effect;

[0005] 3. Although the transverse continuous steaming type achieves continuous cooking, its output is greatly limited due to its small diameter. If a large output is required, many units need to be connected in parallel, which results in high costs and high energy consumption per ton of pulp. Therefore, the technology for continuous and energy-saving operation of raw material softening has not been realized.

[0006] 4. There are other wood chip processing equipment and processes, but they are all complex and require a lot of equipment, such as feeders, grinding discs, cookers, rupture cylinders, rupture valves, fiber receivers, air inlets, silencers, etc. The equipment is numerous, the process is inconvenient to operate, the energy consumption is high, the maintenance cost is expensive, the output is small, and it is not conducive to large-scale commercialization.

[0007] Therefore, there is an urgent need for a new type of wood chip processing equipment to achieve continuous operation of the cooking process without stopping, high output, high quality, and low energy consumption. Summary of the Invention

[0008] In order to solve the problems in the prior art, the present invention provides a rotary drum wood chip steamer for continuous operation.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A continuous operation rotary drum wood chip cooker includes a rotary drum connected to a drive mechanism for rotating the drum; the rotary drum has a feed end and a discharge end, and the rotary drum is inclined downward from the feed end to the discharge end.

[0011] The drum is connected to a feeding mechanism at the inlet end, and the feeding mechanism is connected to the inlet end through a feeding sealing device; the drum is connected to a discharge mechanism at the outlet end, and the discharge mechanism is connected to the outlet end through a discharge sealing device.

[0012] The drum is equipped with a set of lifting plates.

[0013] Furthermore, the lifting plate assembly consists of multiple lifting plate sub-assemblies evenly distributed along the axial direction. Each lifting plate sub-assembly includes multiple lifting plates spirally distributed around the inner wall of the drum, and the lifting plates are inclined and fixed to the inner wall of the drum.

[0014] Furthermore, the lifting plates corresponding to the positions of each lifting plate subgroup are distributed on the same axis.

[0015] Furthermore, the feeding sealing device consists of two sealing units arranged opposite to each other. One sealing unit is installed in the feeding mechanism, and the other sealing unit is installed at the feed end of the drum and rotates accordingly. A rotary sealing fit is formed between the two sealing units.

[0016] The discharge sealing device consists of two sealing units arranged opposite to each other. One sealing unit is installed on the discharge mechanism, and the other sealing unit is installed on the discharge end of the drum and rotates accordingly. The two sealing units form a rotary sealing fit.

[0017] The feeding sealing device and the discharging sealing device have the same structure, but may be the same or different in size.

[0018] Furthermore, the sealing unit includes a fixing seat, which is a cylindrical structure, and the fixing seat is installed at the feed end of the feeding mechanism / drum / discharge end of the discharge mechanism / drum;

[0019] The fixed seat has an annular groove on its cylindrical wall. The depth of the annular groove extends axially along the cylindrical wall, and the annular groove is open at one axial end of the cylindrical wall and closed at the other axial end of the cylindrical wall.

[0020] An installation ring is provided inside the annular groove. The installation ring slides in the annular groove in the axial direction. At the same time, a sealing ring is fixedly provided on one side of the open end of the annular groove.

[0021] The mounting ring is fixed on the other side with an adjusting rod extending toward the closed end of the ring groove. The adjusting rod slides through the closed end of the ring groove and extends out.

[0022] The adjusting rod is also connected to an adjusting device, which is used to adjust the axial movement of the adjusting rod, thereby driving the sealing ring on the mounting ring to move axially.

[0023] Under the action of the adjusting device, the two sealing units of the feeding sealing device / discharging sealing device bring the two sealing rings together to form a rotary sealing fit.

[0024] Furthermore, the adjusting device includes adjusting rings that are coaxially spaced with the fixed base, and the adjusting rod slides through the adjusting rings;

[0025] The adjusting rod is provided with a spring compression device at the position between the adjusting ring and the fixed seat. The spring compression device includes a limiting cylinder that is concentrically fixedly sleeved on the adjusting rod. A gap is formed between the limiting cylinder and the adjusting rod, and a spring is installed at the gap.

[0026] The limiting cylinder is closed at one end of the fixed base and open at one end of the adjusting ring, with one end of the spring abutting against the closed end of the limiting cylinder;

[0027] The adjusting ring has compression cylinders distributed corresponding to the spring. One end of the compression cylinder is fixedly connected to the adjusting ring, and the other end of the compression cylinder points to the gap of the limiting cylinder and contacts and cooperates with the other end of the spring.

[0028] Adjusting bolts are also distributed on the adjusting ring. The adjusting bolts move along the axial direction. One end of the adjusting bolt is connected to the fixed seat, and the other end of the adjusting bolt passes through the adjusting ring and is fitted with a nut, forming the operating part of the adjusting device.

[0029] Furthermore, the feeding mechanism is a spiral feeding mechanism, and the discharging mechanism is an intermittent discharging mechanism.

[0030] Furthermore, the drive mechanism includes a gear ring drive structure and a roller belt rotation structure, and a stop wheel device is also provided in cooperation with the roller belt rotation structure.

[0031] Furthermore, the deflector device includes two sets of spring deflectors symmetrically distributed on both sides of the drum belt. The spring deflectors include a mounting base, which is composed of a horizontal plate and a vertical plate fixedly connected. The horizontal plate is provided with a plurality of elongated holes extending along the axial direction of the drum. A fixed base plate is provided on the lower side of the horizontal plate. The fixed base plate is provided with mounting holes at positions corresponding to the elongated holes. The horizontal plate is mounted on the fixed base plate, and the two are connected by bolts passing through the mounting holes and the elongated holes, so that the horizontal plate and the fixed base plate form a movable fit within the range of the elongated holes.

[0032] A guide wheel seat is installed on the horizontal plate, and a guide wheel is installed on the guide wheel seat. The axis of rotation of the guide wheel is set vertically.

[0033] The vertical plate is located at one axial end of the horizontal plate, and a spring baffle is provided at a distance from it on the outside of the vertical plate. The spring baffle is fixedly connected to the fixed base plate, and an elastic reset mechanism is provided between the spring baffle and the vertical plate.

[0034] Furthermore, the elastic reset mechanism includes a telescopic cylinder and a telescopic rod that are coaxially slidably connected. The telescopic cylinder is fixedly connected to the vertical plate, and the telescopic rod is fixedly connected to the spring baffle. A spring is sleeved on the telescopic rod, with one end of the spring abutting against the spring baffle and the other end of the spring abutting against the telescopic cylinder. A guide cylinder is also fixed on the spring baffle, and the telescopic cylinder and the guide cylinder cooperate in a guiding manner.

[0035] The beneficial effects of this invention are:

[0036] 1. This invention seamlessly connects the feeding mechanism and the feed end of the drum with a feeding sealing device, and seamlessly connects the discharge end of the drum with the discharge mechanism with a discharge sealing device, making feeding, cooking and discharging a complete machine. In addition, the drum is enlarged and lengthened, so that the drum can continuously feed and discharge without stopping the machine, ensuring the continuous operation of the large-capacity drum cooker.

[0037] This invention employs a spiral feeding mechanism to ensure uniform raw material delivery; an inclined and elongated drum and a progressively lifting plate assembly ensure smooth conveying and thorough reaction of large quantities of raw materials such as wood chips; and a seamlessly connected discharge device directly carries out the softened wood chips. This invention integrates the feeding system, reaction equipment, and discharge device, guaranteeing continuous input, reaction, and output of raw materials with low energy consumption.

[0038] In operation, wood chips enter the drum through the feeding structure, where they are softened by physical, chemical, and steam action. With the help of the internal lifting plate and the tilting action of the drum itself, the chips are then discharged into the next process via the discharge device. The rotary drum digester is a stand-alone unit, completely different from traditional processes and equipment. Because the rotary drum digester integrates feeding, reaction, and discharging, production can be unaffected by the feeding and discharging processes, allowing for continuous 24-hour operation. Therefore, downtime due to malfunctions or other reasons can reach 100% production efficiency, significantly improving production capacity.

[0039] The present invention provides a rotary drum cooker that can replace many old-fashioned equipment and processes, reducing investment, optimizing processes, improving production efficiency and output, and reducing energy consumption per ton of pulp. In particular, it has a large output, reaching 2000T / D per unit.

[0040] 2. The feeding sealing device and the discharging sealing device of the present invention have ingenious structural design. The sealing unit on the feeding mechanism and the sealing unit on the feed end of the drum are connected to each other and move relative to each other. The sealing unit on the discharge end of the drum and the sealing unit on the discharge mechanism are connected to each other and move relative to each other. In this way, the three are seamlessly connected and do not interfere with each other's work.

[0041] Under the action of the adjusting device, the two sealing units of the feeding sealing device / discharging sealing device bring the two sealing rings together to form a rotary sealing fit. The adjusting device is equipped with a spring to ensure that the sealing ring is always in contact with the other sealing ring, thus ensuring the sealing effect.

[0042] 3. The present invention uses a retaining wheel device in conjunction with a support roller belt rotation structure. The retaining wheel device adopts a spring retaining wheel. This type of retaining wheel device can not only restrict the upward and downward movement of the rotating strand like a fixed retaining wheel, but also control the up and down floating of the drum in a controlled manner like a hydraulic retaining wheel, so that the belt and the support roller make uniform contact, reducing the input of manpower and material resources as well as energy consumption.

[0043] When the spring-loaded roller is working, as the drum slides down, it applies pressure to the spring-loaded roller. The spring-loaded roller compresses the spring to a certain extent, and the elastic stress causes the drum to rise. This cycle repeats continuously, ensuring uniform contact between the tire and the support roller. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0045] Figure 2 This is a schematic diagram of the feeding mechanism in this invention;

[0046] Figure 3 This is a schematic diagram of the rotating drum in this invention;

[0047] Figure 4 This is a schematic diagram of the feeding sealing device / discharge sealing device in this invention;

[0048] Figure 5 The three-dimensional shape of the sealing unit in this invention Figure 1 ;

[0049] Figure 6 The three-dimensional shape of the sealing unit in this invention Figure 2 ;

[0050] Figure 7 This is a perspective view of the wheel-stopping device in this invention;

[0051] Figure 8 This is a top view of the wheel stop device in this invention;

[0052] Figure 9 for Figure 8 Sectional view of AA in the middle;

[0053] Figure 10 This is a perspective view of the spring retaining wheel in this invention;

[0054] Figure 11 This is a top view of the spring stop wheel in this invention;

[0055] Figure 12 for Figure 11 Cross-sectional view of the middle section (BB).

[0056] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0057] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0058] like Figures 1 to 3 As shown, this embodiment provides a continuous operation rotary drum wood chip cooker, including a rotary drum 1, which is connected to a drive mechanism for rotating it; the rotary drum 1 has a feed end and a discharge end, and the rotary drum is tilted downwards by 1° from the feed end to the discharge end.

[0059] The drum 1 is connected to a feeding mechanism 2 at the feed end, and the feeding mechanism 2 is connected to the feed end through a feeding sealing device 20. The feeding mechanism 2 is a spiral feeding mechanism, which ensures that the raw materials are fed evenly.

[0060] The drum 1 is connected to a discharge mechanism 3 at the discharge end, and the discharge mechanism 3 is connected to the discharge end through a discharge sealing device 30. The discharge mechanism 3 is an intermittent discharge mechanism, which ensures the reaction time of the raw materials in the drum.

[0061] The drum 1 is equipped with a set of lifting plates. In this embodiment, the lifting plate set consists of multiple lifting plate sub-sets evenly distributed along the axial direction. Each lifting plate set includes three lifting plates 5 spirally distributed around the inner wall of the drum. The lifting plates 5 are inclined and fixed to the inner wall of the drum. The lifting plates corresponding to the positions of each lifting plate set are distributed on the same axis.

[0062] The material lifting plate assembly, through the above-mentioned configuration, forms a progressive lifting plate, which ensures the smooth transport of large quantities of raw materials such as wood chips.

[0063] like Figures 4 to 6 As shown, the feeding sealing device 20 consists of two sealing units arranged opposite to each other. One sealing unit is installed on the feeding mechanism 2, and the other sealing unit is installed on the feed end of the rotating drum 1 and rotates accordingly. A rotary sealing fit is formed between the two sealing units.

[0064] The discharge sealing device 30 consists of two sealing units arranged opposite to each other. One sealing unit is installed on the discharge mechanism 3, and the other sealing unit is installed on the discharge end of the rotating drum 1 and rotates accordingly. A rotary sealing fit is formed between the two sealing units.

[0065] The feeding sealing device 20 and the discharging sealing device 20 have the same structure but different sizes. In order to match the feeding mechanism 2 and the discharging mechanism 3, the diameter of the discharging sealing device 20 is larger than that of the feeding sealing device 20.

[0066] In this embodiment, the sealing unit includes a fixing seat 10, which is a cylindrical structure. The fixing seat 10 is installed at the feeding end of the feeding mechanism 2 / drum 1 / discharging end of the discharging mechanism 3 / drum 1.

[0067] The fixed base 10 has an annular groove 11 on its cylindrical wall. The depth of the annular groove 11 extends along the axial direction of the cylindrical wall, and the annular groove 11 is open at one axial end of the cylindrical wall and closed at the other axial end of the cylindrical wall.

[0068] An mounting ring 12 is provided inside the annular groove 11. The mounting ring 12 slides in the annular groove 11 in the axial direction. At the same time, a sealing ring 13 is fixedly provided on the open end side of the mounting ring 12. The mounting ring 12 also contains an oil filling hole.

[0069] The mounting ring 12 is fixed on the other side with an adjusting rod 14 extending toward the closed end of the ring groove 11. The adjusting rod 14 slides through the closed end of the ring groove 11 and extends out.

[0070] The adjusting rod 14 is also connected to an adjusting device, which is used to adjust the axial movement of the adjusting rod 14, thereby driving the sealing ring 13 on the mounting ring 12 to move axially.

[0071] Under the action of the adjusting device, the two sealing units of the feeding sealing device / discharging sealing device bring the two sealing rings together to form a rotary sealing fit.

[0072] Specifically, the adjustment device includes adjustment rings 15 that are coaxially spaced with the fixed base 10, and the adjustment rod 14 slides through the adjustment rings 15.

[0073] The adjusting rod 14 is provided with a spring compression device at the position between the adjusting ring 15 and the fixed seat 10. The spring compression device includes a limiting cylinder 16 concentrically fixedly sleeved on the adjusting rod 14. A gap is formed between the limiting cylinder 16 and the adjusting rod 14, and a spring 17 is installed at the gap.

[0074] The limiting cylinder 16 is closed at one end of the fixed base by a sealing plate, and the limiting cylinder 16 is also fixed to the adjusting rod by the sealing plate. The limiting cylinder 16 is open at one end of the adjusting ring, and one end of the spring 17 abuts against the closed end of the limiting cylinder.

[0075] A compression cylinder 18 is distributed on the adjusting ring 15 corresponding to the spring 17. One end of the compression cylinder 18 is fixedly connected to the adjusting ring 15, and the other end of the compression cylinder 18 points to the gap of the limiting cylinder 16 and contacts and cooperates with the other end of the spring 17.

[0076] Adjusting bolts 19 are also distributed on the adjusting ring 15. The adjusting bolts 19 move along the axial direction. One end of the adjusting bolt 19 is connected to the fixed seat 10, and the other end of the adjusting bolt 19 passes through the adjusting ring 15 and is fitted with a nut, forming the operating part of the adjusting device.

[0077] The working principle of the feeding sealing device 20 and the discharging sealing device 30 is the same, and will be explained below.

[0078] The working principle of a single sealing unit is as follows: Rotating the nut will cause the adjusting ring 15 to move towards the fixed seat 10. The movement of the adjusting ring 15 will cause the compression cylinder 18 to move. The movement of the compression cylinder 18 can compress the spring 17. The other end of the spring 17 exerts force to move the adjusting rod 14 towards the fixed seat. The movement of the adjusting rod will cause the mounting ring 12 and the sealing ring 13 on the mounting ring 12 to move.

[0079] Under the action of the adjusting device, the two sealing units of the feeding sealing device 20 and the discharging sealing device 30 bring the two sealing rings together to form a rotary sealing fit. Furthermore, the spring 17 in the adjusting device ensures that the sealing ring remains in contact with the other sealing ring, guaranteeing a sealing effect.

[0080] The feeding sealing device and the discharging sealing device in this embodiment have ingenious structural designs. The sealing unit on the feeding mechanism and the sealing unit on the feed end of the drum are connected and move relative to each other. The sealing unit on the discharge end of the drum and the sealing unit on the discharge mechanism are connected and move relative to each other. In this way, the three are seamlessly connected and do not interfere with each other's work.

[0081] In this embodiment, the drive mechanism includes a gear ring drive structure 91 and a roller belt rotation structure 92. The gear ring drive structure 91 and the roller belt rotation structure 92 are existing technologies and will not be described in detail here. Reference numeral 6 in the figure represents the roller.

[0082] A wheel stop device 7 is also provided to cooperate with the rotating structure of the support roller belt. For example... Figures 7 to 12 As shown, the retaining wheel device 7 includes two sets of spring retaining wheels 70 symmetrically distributed on both sides of the drum belt. Each spring retaining wheel 70 includes a mounting base 71, which is composed of a horizontal plate and a vertical plate fixedly connected together. The horizontal plate is provided with a plurality of elongated holes 72 extending along the axial direction of the drum. A fixed base plate 73 is provided on the lower side of the horizontal plate. The fixed base plate 73 is provided with mounting holes 74 corresponding to the elongated holes 72. The horizontal plate is mounted on the fixed base plate 73, and the two are connected by bolts passing through the mounting holes 74 and the elongated holes 72, so that the horizontal plate and the fixed base plate 73 form a movable fit within the range of the elongated holes.

[0083] A wheel stop seat 75 is mounted on the horizontal plate, and a wheel stop 76 is mounted on the wheel stop seat 75. The axis of rotation of the wheel stop 76 is set vertically.

[0084] The vertical plate is located at one axial end of the horizontal plate, and a spring baffle 77 is provided at a distance from it on the outside of the vertical plate. The spring baffle 77 is fixedly connected to the fixed base plate 73, and an elastic reset mechanism is provided between the spring baffle 77 and the vertical plate.

[0085] Specifically, the elastic reset mechanism includes a telescopic cylinder 78 and a telescopic rod 79 that are coaxially slidably connected. The telescopic cylinder 78 is fixedly connected to the vertical plate, and the telescopic rod 79 is fixedly connected to the spring baffle 77. A spring 80 is sleeved on the telescopic rod 79, with one end of the spring 80 abutting against the spring baffle 77 and the other end of the spring 80 abutting against the telescopic cylinder 78. A guide cylinder 81 is also fixed on the spring baffle 77, and the telescopic cylinder 78 and the guide cylinder 81 are guided together.

[0086] When the spring retainer is working, as the drum 1 slides down, it applies pressure to the spring retainer. The spring retainer compresses the spring to a certain extent, and the elastic stress causes the drum to rise. This cycle repeats continuously, ensuring uniform contact between the tire and the support roller.

[0087] This invention, through the cooperation of the guide wheel device and the support wheel belt rotation structure, can not only satisfy the requirement of a fixed guide wheel to restrict the upward and downward movement of the rotating strand, but also control the up and down floating of the drum in a controlled manner, just like a hydraulic guide wheel, so that the tire and the support wheel can make uniform contact, reducing the input of manpower and material resources as well as energy consumption.

[0088] This invention seamlessly connects the feeding mechanism and the feed end of the drum using a feeding sealing device, and seamlessly connects the discharge end of the drum and the discharge mechanism using a discharge sealing device, making feeding, cooking, and discharging a complete machine. Furthermore, the drum is enlarged and lengthened, allowing for continuous feeding and discharging without stopping the machine, thus ensuring large-capacity continuous operation of the drum-type cooker.

[0089] This invention employs a spiral feeding mechanism to ensure uniform raw material delivery; an inclined and elongated drum and a progressively lifting plate assembly ensure smooth conveying and thorough reaction of large quantities of raw materials such as wood chips; and a seamlessly connected discharge device directly carries out the softened wood chips. This invention integrates the feeding system, reaction equipment, and discharge device, guaranteeing continuous input, reaction, and output of raw materials with low energy consumption.

[0090] In operation, wood chips enter the drum through the feeding structure, where they are softened by physical, chemical, and steam action. With the help of the internal lifting plate and the tilting action of the drum itself, the chips are then discharged into the next process via the discharge device. The rotary drum digester is a stand-alone unit, completely different from traditional processes and equipment. Because the rotary drum digester integrates feeding, reaction, and discharging, production can be unaffected by the feeding and discharging processes, allowing for continuous 24-hour operation. Therefore, downtime due to malfunctions or other reasons can reach 100% production efficiency, significantly improving production capacity.

[0091] The present invention provides a rotary drum cooker that can replace many old-fashioned equipment and processes, reducing investment, optimizing processes, improving production efficiency and output, and reducing energy consumption per ton of pulp. In particular, it has a large output, reaching 2000T / D per unit.

[0092] The above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.

[0093] If the terms "first" or "second" are used in this document to define components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing the invention and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0094] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0095] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A continuous operation rotary drum wood chip cooking machine, characterized in that: It includes a rotating drum connected to a drive mechanism that drives its rotation; the rotating drum has a feed end and a discharge end, and the rotating drum is inclined downward from the feed end to the discharge end; The drum is connected to a feeding mechanism at the inlet end, and the feeding mechanism is connected to the inlet end through a feeding sealing device; the drum is connected to a discharge mechanism at the outlet end, and the discharge mechanism is connected to the outlet end through a discharge sealing device. The drum is equipped with a set of lifting plates. The lifting plate group consists of multiple lifting plate subgroups evenly distributed along the axial direction. Each lifting plate group includes multiple lifting plates spirally distributed around the inner wall of the drum. The lifting plates are inclined and fixed to the inner wall of the drum. The corresponding lifting plates of each lifting plate group are distributed on the same axis; The feeding sealing device consists of two sealing units arranged opposite to each other. One sealing unit is installed in the feeding mechanism, and the other sealing unit is installed at the feed end of the drum and rotates accordingly. The two sealing units form a rotary sealing fit. The discharge sealing device consists of two sealing units arranged opposite to each other. One sealing unit is installed on the discharge mechanism, and the other sealing unit is installed on the discharge end of the drum and rotates accordingly. The two sealing units form a rotary sealing fit. The feeding sealing device and the discharging sealing device have the same structure, but may be the same or different in size; The sealing unit includes a fixed seat, which is a cylindrical structure. The fixed seat is installed on the feeding mechanism, the feed end of the drum, the discharge mechanism, and the discharge end of the drum. The fixed seat has an annular groove on its cylindrical wall. The depth of the annular groove extends axially along the cylindrical wall, and the annular groove is open at one axial end of the cylindrical wall and closed at the other axial end of the cylindrical wall. An installation ring is provided inside the annular groove. The installation ring slides in the annular groove in the axial direction. At the same time, a sealing ring is fixedly provided on one side of the open end of the annular groove. The mounting ring is fixed on the other side with an adjusting rod extending toward the closed end of the ring groove. The adjusting rod slides through the closed end of the ring groove and extends out. The adjusting rod is also connected to an adjusting device, which is used to adjust the axial movement of the adjusting rod, thereby driving the sealing ring on the mounting ring to move axially. Under the action of the adjusting device, the two sealing units of the feeding sealing device and the discharging sealing device bring the two sealing rings together to form a rotary sealing fit; The adjusting device includes adjusting rings that are coaxially spaced with the fixed base, and the adjusting rod slides through the adjusting rings; The adjusting rod is provided with a spring compression device at the position between the adjusting ring and the fixed seat. The spring compression device includes a limiting cylinder that is concentrically fixedly sleeved on the adjusting rod. A gap is formed between the limiting cylinder and the adjusting rod, and a spring is installed at the gap. The limiting cylinder is closed at one end of the fixed base by a sealing plate and open at one end of the adjusting ring. The limiting cylinder is also fixed to the adjusting rod by the sealing plate, and one end of the spring abuts against the closed end of the limiting cylinder. The adjusting ring has compression cylinders distributed corresponding to the spring. One end of the compression cylinder is fixedly connected to the adjusting ring, and the other end of the compression cylinder points to the gap of the limiting cylinder and contacts and cooperates with the other end of the spring. Adjusting bolts are also distributed on the adjusting ring. The adjusting bolts are arranged axially. One end of the adjusting bolt is connected to the fixed seat, and the other end of the adjusting bolt passes through the adjusting ring and is fitted with a nut, forming the operating part of the adjusting device.

2. The continuous operation rotary drum wood chip steamer according to claim 1, characterized in that: The feeding mechanism is a spiral feeding mechanism, and the discharging mechanism is an intermittent discharging mechanism.

3. The continuous operation rotary drum wood chip steamer according to claim 1, characterized in that: The drive mechanism includes a gear ring drive structure and a roller belt rotation structure, and a stop wheel device is also provided in cooperation with the roller belt rotation structure.

4. The continuous operation rotary drum wood chip cooker according to claim 3, characterized in that: The wheel-stopping device includes two sets of spring-loaded wheel-stopping devices symmetrically distributed on both sides of the drum belt. Each spring-loaded wheel-stopping device includes a mounting base, which is composed of a horizontal plate and a vertical plate fixedly connected together. The horizontal plate has multiple elongated holes extending along the axial direction of the drum. A fixed base plate is provided on the lower side of the horizontal plate. The fixed base plate has mounting holes at positions corresponding to the elongated holes. The horizontal plate is mounted on the fixed base plate, and the two are connected by bolts passing through the mounting holes and the elongated holes, so that the horizontal plate and the fixed base plate form a movable fit within the range of the elongated holes. A guide wheel seat is installed on the horizontal plate, and a guide wheel is installed on the guide wheel seat. The axis of rotation of the guide wheel is set vertically. The vertical plate is located at one axial end of the horizontal plate, and a spring baffle is provided at a distance from it on the outside of the vertical plate. The spring baffle is fixedly connected to the fixed base plate, and an elastic reset mechanism is provided between the spring baffle and the vertical plate.

5. The continuous operation rotary drum wood chip steamer according to claim 4, characterized in that: The elastic reset mechanism includes a telescopic cylinder and a telescopic rod that are coaxially slidably connected. The telescopic cylinder is fixedly connected to a vertical plate, and the telescopic rod is fixedly connected to a spring baffle. A spring is sleeved on the telescopic rod, with one end of the spring abutting against the spring baffle and the other end of the spring abutting against the telescopic cylinder. A guide cylinder is also fixed on the spring baffle, and the telescopic cylinder and the guide cylinder cooperate in a guiding manner.

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