A drying device for particleboard production

Abstract

The present invention discloses a drying device for particleboard production, comprising a frame and a drying cylinder rotatably connected to the frame, the inner wall of the drying cylinder is provided with a spiral lifting plate, the interior of the drying cylinder is provided with a first rotating shaft, the first rotating shaft is provided with a first sleeve axially slidably connected to the first rotating shaft, the first sleeve is provided with a plurality of material frames, a separation plate is fixedly provided inside the material frame, the separation plate divides the bearing space of the material frame into a first bearing space and a second bearing space, the drying device for particleboard production in the present invention is used for drying wood chips, the material frame is used for receiving the wood chips when the wood chips inside the drying cylinder are lifted up, the small-particle wood chips will pass through the separation plate of the material frame and fall into the drying cylinder for further axial transmission, the large-particle wood chips stay on the separation plate of the material frame, forming a speed difference between the large-particle wood chips and the small-particle wood chips in transmission inside the drying cylinder, so that the large-particle wood chips are more fully dried.

Description

Technical Field

[0001] The invention relates to the technical field of particleboard processing, in particular to a drying device for particleboard production. Background Art

[0002] In the production of particleboard, particle drying is a key step, which directly affects the quality of particleboard. Particle drying is generally set before mixing glue. Particles also need to maintain a certain humidity after drying. Too dry particles will absorb glue and affect the adhesion of particles. Too wet particles will evaporate water during hot pressing, affecting the hot pressing effect.

[0003] Rotary drum drying equipment is widely used in wood shavings drying due to its high efficiency and continuous production characteristics. The drum of the rotary drum drying equipment is equipped with lifting plates or spiral blades to push and turn the material, ensuring full contact between the wet wood shavings and the hot air, so as to achieve fast and uniform drying of the wood shavings.

[0004] Since the wood shavings particles dried in the same batch are not completely uniform, large-particle wood shavings require a longer drying time than small-particle wood shavings. When the wood shavings are dried using the existing rotary drum drying equipment, the drying time of large-particle wood shavings and small-particle wood shavings inside the drum is almost the same, which will result in the large-particle wood shavings in the same batch not being fully dried. Summary of the invention

[0005] In view of the situation in the prior art that the rotary drum drying equipment has the same drying time for different particle sizes of the same batch of wood chips, the present invention proposes a drying equipment for particleboard production, in which a material frame is arranged inside the rotary drum drying equipment to increase the residence time of large particle sizes in the drying cylinder so as to promote full drying of the large particle sizes.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A drying device for particleboard production includes a frame and a drying cylinder rotatably connected to the frame, the inner wall of the drying cylinder is provided with a spiral lifting plate, the axis of the spiral line corresponding to the lifting plate is coaxially arranged with the axis of the drying cylinder, and the drying cylinder is rotated to form the lifting plate to lift and axially push the material inside the drying cylinder. A first rotating shaft is provided inside the drying cylinder, and a first sleeve axially slidably connected to the first rotating shaft is provided on the first rotating shaft, the drying cylinder, the first rotating shaft and the first sleeve are coaxially arranged, and a plurality of material frames are provided on the first sleeve, and the plurality of material frames are arranged around the first sleeve with the axis of the first sleeve as the center.

[0008] The first end of the material frame is fixedly connected to the first sleeve, the second end of the material frame is a free end and extends in the direction close to the lifting plate, the material frame is composed of a first plate body, two second plate bodies and a third plate body, the two second plate bodies are arranged oppositely, and a separation plate is fixedly arranged inside the material frame, the separation plate is located in the middle of the material frame and is used to separate the bearing space of the material frame into a first bearing space and a second bearing space. The separation plate is used to receive the shavings raised by the lifting plate and screen and convey the shavings, the screening is used to separate large particle shavings from small particle shavings, and the conveying is used to keep at least part of the shavings from the first bearing space of the front material frame into the second bearing space of the rear material frame.

[0009] The above-mentioned first rotating shaft is hollow, and a second rotating shaft coaxially arranged with the first rotating shaft is arranged inside the first rotating shaft. The second rotating shaft is axially slidably connected to the first rotating shaft. The first rotating shaft is provided with a first slide groove, and the first slide groove penetrates the shaft wall of the first rotating shaft and extends axially. A connecting plate for connecting the first sleeve is provided on the second rotating shaft, and the connecting plate passes through the first slide groove and is fixedly connected to the first sleeve.

[0010] One end of the second rotating shaft extends from the end of the first rotating shaft, and the second rotating shaft is fixedly connected to the second sleeve from the protruding end of the first rotating shaft, and a fixed column is arranged inside the second sleeve, and the fixed column is fixedly connected to the frame, and the fixed column, the second sleeve and the second rotating shaft are arranged coaxially. A second slide groove is arranged on the surface of the fixed column, and the second slide groove is wavy and extends along the circumferential direction of the diameter surface of the fixed column. A sliding body matching the second slide groove is arranged on the inner wall of the second sleeve, and the second sleeve rotates relative to the fixed column to form the sliding body sliding inside the second slide groove, and the sliding body sliding inside the second slide groove forms the axial reciprocating movement of the second sleeve relative to the fixed column.

[0011] Preferably, the first sleeve is sleeved on the outside of the first slide groove, the axial length of the first sleeve is greater than the axial extension length of the first slide groove on the first rotating shaft, and during the axial movement of the second rotating shaft relative to the first rotating shaft, the first sleeve always maintains complete coverage of the first slide groove.

[0012] Preferably, an elastic member is further provided between the fixed column and the second sleeve, and the elastic member is used for buffering when the second sleeve moves axially.

[0013] Preferably, the first rotating shaft is rotatably connected to the frame, and the first rotating shaft and the drying cylinder have the same rotation direction.

[0014] Preferably, one end of the first rotating shaft extends from the drying cylinder, a first wheel body is fixedly sleeved on the end of the first rotating shaft extending from the drying cylinder, and the frame is provided with a first driving assembly for driving the first wheel body to rotate.

[0015] Preferably, an outer ring gear is fixedly sleeved on the outside of the drying cylinder, and the frame is provided with a second driving assembly for driving the outer ring gear to rotate.

[0016] Preferably, a first sealing plate is provided on the first end surface of the drying cylinder, and a second sealing plate is provided on the second end surface of the drying cylinder. The first sealing plate and the second sealing plate are respectively rotatably connected to the drying cylinder. The first sealing plate is fixedly provided with a feed pipe, and the second sealing plate is fixedly provided with a discharge pipe.

[0017] Preferably, an air inlet pipe for gas to enter the drying cylinder is fixedly arranged on the first sealing plate, and an exhaust pipe for gas to discharge from the drying cylinder is fixedly arranged on the second sealing plate.

[0018] The beneficial effects of the present invention are:

[0019] 1. The drying equipment for particleboard production is used for drying wood chips. A rotatable material frame is added inside the drying cylinder of the existing rotary drum drying device. The material frame receives the wood chips when the wood chips are lifted up inside the drying cylinder. The wood chips can be screened in the material frame. The small-particle wood chips will pass through the separation plate of the material frame and fall into the drying cylinder for further axial transmission. The large-particle wood chips stay on the separation plate of the material frame and are transmitted and dried at an axially fixed position through the rotation of the material frame. Then they fall and are further transmitted, forming a speed difference between the large-particle wood chips and the small-particle wood chips in the drying cylinder. The residence time T1 of the large-particle wood chips inside the drying cylinder is longer than the residence time T2 of the small-particle wood chips, so that the large-particle wood chips can be more fully dried.

[0020] 2. The material frame of the drying equipment for particleboard production can generate axial vibration. The vibrating material frame promotes the separation of large-particle shavings and small-particle shavings, reduces the time that small-particle shavings stay in the material frame, and avoids over-drying. At the same time, the vibration can promote the dispersion of large-particle shavings on the separation plate of the material frame, and avoids the accumulation of shavings that affects the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the axial section of the drying equipment for particleboard production;

[0022] Figure 2 This is a schematic diagram of the structure of the radial section at AA of the drying equipment for particleboard production;

[0023] Figure 3 This is a schematic diagram of the structure of the material frame of the drying equipment for particleboard production;

[0024] Figure 4 This is a schematic diagram of the structure of the second sleeve of the drying equipment for particleboard production;

[0025] Figure 5This is a schematic diagram of the structure of the cross section at position BB of the second sleeve of the drying equipment for producing particleboard;

[0026] Figure 6 This is a schematic diagram of the structure of the first synchronous belt of the drying equipment for particleboard production;

[0027] Figure 7 This is a schematic diagram of the structure of the outer gear ring of the drying equipment for particleboard production;

[0028] Figure 8 This is a schematic diagram of the working principle of the material frame of the drying equipment for particleboard production;

[0029] Fig. 9 It is a schematic diagram of the axial movement path of large-particle wood chips and small-particle wood chips inside the drying cylinder 2.

[0030] In the figure: 1, frame; 2, drying cylinder; 3, first rotating shaft; 4, first sleeve; 5, material frame; 6, second rotating shaft; 7, lifting plate; 8, second sleeve; 9, fixed column; 10, first wheel body; 11, second wheel body; 12, first synchronous belt; 13, first motor; 14, second motor; 15, third wheel body; 16, outer gear ring;

[0031] 21. First sealing plate; 22. Second sealing plate; 23. Feed pipe; 24. Discharge pipe; 31. First slide groove; 32. Support sleeve; 41. Connecting plate; 51. First plate body; 52. Second plate body; 53. Third plate body; 54. Separating plate; 541. First bearing surface; 542. Second bearing surface; 543. First bearing space; 544. Second bearing space; 81. Sliding body; 82. Elastic member; 91. Second slide groove; 131. Third rotating shaft; 141. Fourth rotating shaft. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figure 1 A drying device for particleboard production includes a frame 1 and a drying cylinder 2 mounted on the frame 1, wherein the drying cylinder 2 is rotatably connected to the frame 1 through a slewing bearing. The frame 1 is provided with a second driving assembly for driving the drying cylinder 2 to rotate, wherein the second driving assembly includes a second motor 14, wherein the output shaft of the second motor 14 is fixedly connected to a fourth rotating shaft 141, Figure 7The third wheel 15 is fixedly sleeved on the fourth rotating shaft 141. In this embodiment, the third wheel 15 is a gear. The drying cylinder 2 is fixedly sleeved with an outer gear ring 16, which meshes with the third wheel 15. The second motor 14 can rotate the third wheel 15 and the outer gear ring 16 through the fourth rotating shaft 141 to realize the rotation of the drying cylinder 2.

[0034] For further reference, Figure 1 The two end surfaces of the drying cylinder 2 are open, the first end surface of the drying cylinder 2 is provided with a first sealing plate 21, and the second end surface of the drying cylinder 2 is provided with a second sealing plate 22. The first sealing plate 21 and the second sealing plate 22 are respectively fixedly connected to the frame 1, and the first sealing plate 21 and the second sealing plate 22 are respectively rotatably connected to the drying cylinder 2. The first sealing plate 21 is fixedly provided with a feed pipe 23 and an air inlet pipe (not shown). The feed pipe 23 is used for feeding wood shavings, and the air inlet pipe is used for hot gas to enter the drying cylinder 2, and the hot gas realizes the drying of the wood shavings inside the drying cylinder 2. The second sealing plate 22 is fixedly provided with a discharge pipe 24 and an exhaust pipe (not shown). The discharge pipe 24 is provided at the bottom of the second sealing plate 22. The discharge pipe 24 is used for discharging wood shavings, and the exhaust pipe is used for discharging water vapor and hot gas. The air inlet pipe and the exhaust pipe are combined to form a directional hot air flow inside the drying cylinder 2, and the exhaust pipe can take away the water vapor inside the drying cylinder 2.

[0035] For further reference, Figure 1 and Figure 2 The inner wall of the drying cylinder 2 is provided with a spiral lifting plate 7. The lifting plate 7 is coaxially arranged with the axis of the spiral line corresponding to the axis of the drying cylinder 2. The lifting plate 7 can rotate with the drying cylinder 2 to lift and axially push the wood chips inside the drying cylinder 2. The wood chips enter the first end of the drying cylinder 2 from the feed pipe 23. The wood chips are dried inside the drying cylinder 2. The drying cylinder 2 and the lifting plate 7 rotate together. The lifting plate 7 pushes and lifts the wood chips. When the wood chips move to the second end of the drying cylinder 2, the wood chips are dried and can be discharged from the discharge pipe 24.

[0036] The drying cylinder 2 is provided with a first rotating shaft 3 inside, the first rotating shaft 3 is rotatably connected to the frame 1, and the first end of the first rotating shaft 3 is rotatably connected to the first sealing plate 21, and the second end of the first rotating shaft 3 is rotatably connected to the second sealing plate 22 and extends from the second sealing plate 22. The second end of the first rotating shaft 3 is externally fixedly sleeved with a first wheel body 10, and the frame 1 is fixedly provided with a first driving assembly for driving the first wheel body 10 to rotate, and the first driving assembly includes a first motor 13, the output shaft of the first motor 13 is fixedly connected to a third rotating shaft 131, and the third rotating shaft 131 is fixedly sleeved with a second wheel body 11, refer to Figure 6The second wheel body 11 is connected to the first wheel body 10 through the first synchronous belt 12. In this embodiment, the first wheel body 10 and the second wheel body 11 are both synchronous toothed pulleys, and the first synchronous belt 12 is a synchronous toothed belt. The first motor 13 can drive the second wheel body 11 to rotate, and the second wheel body 11 drives the first wheel body 10 to rotate synchronously through the first synchronous belt 12, thereby forming a rotation action of the first rotating shaft 3.

[0037] A plurality of first sleeves 4 are arranged on the first rotating shaft 3, and the drying cylinder 2, the first rotating shaft 3 and the first sleeve 4 are arranged coaxially. The inner diameter of the first sleeve 4 matches the outer diameter of the first rotating shaft 3, and the first sleeve 4 is sleeved on the outside of the first rotating shaft 3 and axially slidably connected with the first rotating shaft 3.

[0038] refer to Figure 1 and Figure 2 In order to realize the axial sliding action of the first sleeve 4 relative to the first rotating shaft 3, the first rotating shaft 3 is hollow, and a cylindrical cavity is formed inside the first rotating shaft 3. A second rotating shaft 6 is arranged in the internal cavity of the first rotating shaft 3. The second rotating shaft 6 is coaxially arranged with the first rotating shaft 3, and the second rotating shaft 6 is axially slidably connected with the first rotating shaft 3. A plurality of first sliding grooves 31 are arranged on the first rotating shaft 3, and the first sliding grooves 31 penetrate the shaft wall of the first rotating shaft 3 and extend in the axial direction of the first rotating shaft 3. A connecting plate 41 for connecting the first sleeve 4 is arranged on the second rotating shaft 6, and the position of the first sliding groove 31 corresponds to the position of the first sleeve 4. The connecting plate 41 passes through the first sliding groove 31 and is fixedly connected to the first sleeve 4. The first sleeve 4 is sleeved on the outside of the first sliding groove 31 and covers the first sliding groove 31 to prevent wood shavings from entering the inside of the first sliding groove 31. The axial movement of the first sleeve 4 relative to the first rotating shaft 3 can be formed by the axial movement of the second rotating shaft 6. In this embodiment, the first sleeve 4 needs to maintain a certain axial length so that the first sleeve 4 always maintains complete coverage of the first sliding groove 31 during the axial movement relative to the first rotating shaft 3.

[0039] One end of the second rotating shaft 6 is arranged to extend from the end of the first rotating shaft 3. Figure 1 A support sleeve 32 is provided at the end of the first rotating shaft 3, and the support sleeve 32 is used to support the second rotating shaft 6. The outer wall of the support sleeve 32 is fixedly connected to the first rotating shaft 3, and the inner wall of the support sleeve 32 is connected to the second rotating shaft 6 through a spline to keep the second rotating shaft 6 and the first rotating shaft 3 rotating synchronously.

[0040] For further reference, Figure 1 , Figure 4 and Figure 5 The second rotating shaft 6 is fixedly connected to the second sleeve 8 at the end extending from the first rotating shaft 3 , and a fixed column 9 is fixedly arranged on the frame 1 , and the fixed column 9 extends to the inside of the second sleeve 8 , and the fixed column 9 , the second sleeve 8 and the second rotating shaft 6 are coaxially arranged.

[0041] Furthermore, a second slide groove 91 is provided on the surface of the fixed cylinder 9. The second slide groove 91 is wavy and extends along the circumferential direction of the diameter surface of the fixed cylinder 9. The second slide groove 91 is an annular wavy slide groove. A sliding body 81 is fixedly provided on the inner wall of the second sleeve 8. The sliding body 81 matches the second slide groove 91 of the fixed cylinder 9 to form a sliding connection. When the second sleeve 8 rotates relative to the fixed cylinder 9, the sliding body 81 moves inside the annular second slide groove 91. Since the second slide groove 91 has undulating waves, the second slide groove 91 can axially guide the sliding body 81 when the sliding body 81 moves, forming an axial reciprocating movement of the second sleeve 8 relative to the fixed cylinder 9, thereby realizing an axial reciprocating movement of the second rotating shaft 6 relative to the first rotating shaft 3.

[0042] In this embodiment, an elastic member 82 is further provided between the fixed column 9 and the second sleeve 8. The elastic member 82 is a spring. The elastic member 82 is used to provide buffering when the second sleeve 8 and the first rotating shaft 3 move axially to keep the movement gentle and smooth.

[0043] For further reference, Figure 2 A plurality of material frames 5 are arranged on the first sleeve 4, and the plurality of material frames 5 are arranged around the first sleeve 4 with the axis of the first sleeve 4 as the center. The first end of the material frame 5 is fixedly connected to the first sleeve 4, and the second end of the material frame 5 is a free end and extends toward the direction close to the lifting plate 7.

[0044] refer to Figure 1 and Figure 3 The material frame 5 is composed of a first plate 51, two second plates 52 and a third plate 53. The two second plates 52 are arranged opposite to each other, the first plate 51 and the third plate 53 are arranged opposite to each other, and the first plate 51 and the second plate 52, and the third plate 53 and the second plate 52 are fixedly connected to form a frame. The first plate 51 is an arc-shaped plate, and the shape of the first plate 51 matches the side wall of the first sleeve 4. The first plate 51 is attached to the surface of the first sleeve 4 and is fixedly connected to the first sleeve 4.

[0045] Furthermore, a separation plate 54 is fixedly disposed inside the material frame 5, and the separation plate 54 is located in the middle of the material frame 5. The separation plate 54 is used to separate the bearing space of the material frame 5 into a first bearing space 543 and a second bearing space 544. The first bearing space 543 corresponds to the first bearing surface 541 of the separation plate 54, and the second bearing space 544 corresponds to the second bearing surface 542 of the separation plate 54.

[0046] The material frame 5 can rotate along with the first rotating shaft 3, the rotation direction W1 of the drying cylinder 2 is the same as the rotation direction W2 of the material frame 5, and the rotation speed V1 of the drying cylinder 2 is the same as the rotation speed V2 of the material frame 5. Figure 8When the shavings are lifted by the lifting plate 7, the separation plate 54 can receive part of the shavings lifted by the lifting plate 7. During the rotation of the first rotating shaft 3, the second rotating shaft 6 can move axially back and forth relative to the first rotating shaft 3, thereby forming the axial vibration of the first sleeve 4 and the material frame 5 on the first rotating shaft 3. Since the separation plate 54 is a mesh structure, the separation plate 54 can screen the shavings thereon, and the screening is used to separate large-particle shavings and small-particle shavings. The small-particle shavings will pass through the separation plate 54 and fall to the drying cylinder 2 for further axial transmission; the large-particle shavings stay on the separation plate 54, and are transmitted and dried at an axially fixed position through the rotation of the material frame 5, and then fall to the drying cylinder 2 for further transmission.

[0047] refer to Fig. 9 On the moving path inside the drying cylinder 2, the small particle shavings will go through the process of "axial movement-lifting-falling" for many times, and the large particle shavings will go through the process of "axial movement-lifting-rotational conveying-falling" for many times on the moving path inside the drying cylinder 2, so that a transmission speed difference is formed between the large particle shavings and the small particle shavings inside the drying cylinder 2. The residence time T1 of the large particle shavings inside the drying cylinder 2 is longer than the residence time T2 of the small particle shavings, and the large particle shavings can be dried more fully.

[0048] refer to Figure 8 When the shavings are conveyed on the material frame 5, due to the rotation of the first sleeve 4, when the material frame 5 passes the top of the first sleeve 4, the shavings will enter the second bearing surface 542 of the separation plate 54 on the rear material frame 5 from the first bearing surface 541 of the separation plate 54 on the front material frame 5, so that the shavings enter the second bearing space 544 of the rear material frame 5 from the first bearing space 543 of the front material frame 5. The above process can not only form the flipping of the shavings, reduce the problem of uneven drying caused by the accumulation of shavings on the separation plate 54, and improve the screening effect, but also realize the continuous conveyance of shavings on the first sleeve 4.

[0049] The working process of the drying equipment for particleboard production in this embodiment includes the following steps:

[0050] Step 1: The first motor 13 and the second motor 14 work together. The first motor 13 drives the second wheel body 11 to rotate. The second wheel body 11 drives the first wheel body 10 to rotate through the first synchronous belt 12, thereby forming the rotation of the first rotating shaft 3. The second motor 14 drives the third wheel body 15 to rotate. The third wheel body 15 drives the outer gear ring 16 to rotate, thereby realizing the rotation of the drying cylinder 2.

[0051] The hot gas enters the drying cylinder 2 from the air inlet pipe, and the hot gas is discharged from the exhaust pipe, forming a hot air flow inside the drying cylinder 2, and the inside of the drying cylinder 2 has a suitable drying temperature;

[0052] The second rotating shaft 6 inside the first rotating shaft 3 rotates along with the first rotating shaft 3, thereby forming a rotational movement of the second sleeve 8 at the end of the second rotating shaft 6. The second sleeve 8 rotates relative to the fixed column 9, and the sliding body 81 moves inside the annular second slide groove 91. The wavy second slide groove 91 can axially guide the sliding body 81 when the sliding body 81 moves, thereby forming an axial reciprocating movement of the second sleeve 8 relative to the fixed column 9, thereby realizing the axial reciprocating movement of the second rotating shaft 6 relative to the first rotating shaft 3, thereby forming an axial vibration of the first sleeve 4 and the material frame 5 relative to the first rotating shaft 3.

[0053] Step 2: The wood chips enter the drying cylinder 2 from the feed pipe 23 , and the drying cylinder 2 rotates with the lifting plate 7 . The lifting plate 7 pushes and lifts the wood chips, and the wood chips move axially inside the drying cylinder 2 .

[0054] Step 3: When the shavings pass through the material frame 5, the separation plate 54 can receive part of the shavings lifted by the lifting plate 7. Since the separation plate 54 is a mesh structure, the separation plate 54 can screen the shavings thereon. The small-particle shavings will pass through the separation plate 54 and fall to the bottom of the drying cylinder 2 to continue axial transmission. The large-particle shavings stay on the separation plate 54 and are transmitted and dried at the axial fixed position of the drying cylinder 2 through the rotation of the material frame 5.

[0055] In the above process, small-particle shavings can fall to the bottom of the drying cylinder 2 relatively quickly and be transported. The time for large-particle shavings and small-particle shavings to travel from the first end to the second end of the drying cylinder 2 is different, resulting in different drying times. The residence time T1 of large-particle shavings inside the drying cylinder 2 is longer than the residence time T2 of small-particle shavings. Large-particle shavings have a longer drying time, and the large-particle shavings are kept fully dried.

[0056] Step 4: When the material frame 5 passes through the top of the first sleeve 4, the shavings will enter the second bearing surface 542 of the separation plate 54 on the rear material frame 5 from the first bearing surface 541 of the separation plate 54 on the front material frame 5, so that the shavings enter the second bearing space 544 of the rear material frame 5 from the first bearing space 543 of the front material frame 5. The above process can not only form the flipping of the shavings, reduce the problem of uneven drying caused by the accumulation of shavings on the separation plate 54, but also realize the continuous transmission of shavings on the first sleeve 4.

[0057] Step 5: The wood shavings on the material frame 5 fall to the drying cylinder 2 and are further transported;

[0058] Step 6: Repeat steps 3 and 4 until the wood chips move to the second end of the drying cylinder 2 . The wood chips are dried and can be discharged from the discharge pipe 24 .

[0059] It is worth noting that, among the wood chips entering the drying cylinder 2 at the same time, the small-particle wood chips are discharged from the discharge pipe 24 earlier than the large-particle wood chips, and the large-particle wood chips are dried for a longer time, which is conducive to the full drying of the large-particle wood chips.

[0060] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A drying device for particleboard production, comprising a frame and a drying cylinder rotatably connected to the frame, wherein the inner wall of the drying cylinder is provided with a spiral lifting plate, wherein the lifting plate is coaxially arranged with the axis of the spiral line corresponding to the axis of the drying cylinder, and the drying cylinder is rotated to form the lifting plate to lift and axially push the material inside the drying cylinder, characterized in that: A first rotating shaft is arranged inside the drying cylinder, a first sleeve is arranged on the first rotating shaft and is axially slidably connected to the first rotating shaft, the drying cylinder, the first rotating shaft and the first sleeve are arranged coaxially, a plurality of material frames are arranged on the first sleeve, and the plurality of material frames are arranged around the first sleeve with the axis of the first sleeve as the center; The first end of the material frame is fixedly connected to the first sleeve, the second end of the material frame is a free end and extends in a direction close to the lifting plate, the material frame is composed of a first plate body, two second plate bodies and a third plate body, the two second plate bodies are arranged opposite to each other, and a separation plate is fixedly arranged inside the material frame, the separation plate is located in the middle of the material frame and is used to separate the bearing space of the material frame into a first bearing space and a second bearing space; The separation plate is used to receive the wood shavings raised by the lifting plate and to screen and convey the wood shavings, wherein the screening is used to separate large-particle wood shavings from small-particle wood shavings, and the conveying is used to keep at least part of the wood shavings from the first carrying space of the front-position material frame into the second carrying space of the rear-position material frame; The first rotating shaft is hollow, a second rotating shaft coaxially arranged with the first rotating shaft is arranged inside the first rotating shaft, the second rotating shaft is axially slidably connected with the first rotating shaft, the first rotating shaft is provided with a first sliding groove, the first sliding groove penetrates the shaft wall of the first rotating shaft and extends in the axial direction, the second rotating shaft is provided with a connecting plate for connecting with the first sleeve, the connecting plate passes through the first sliding groove and is fixedly connected to the first sleeve; One end of the second rotating shaft extends out from the end of the first rotating shaft, and the second rotating shaft is fixedly connected to the second sleeve from the protruding end of the first rotating shaft, and a fixed column is arranged inside the second sleeve, and the fixed column is fixedly connected to the frame, and the fixed column, the second sleeve and the second rotating shaft are arranged coaxially; a second slide groove is arranged on the surface of the fixed column, and the second slide groove is wavy and extends along the circumferential direction of the diameter surface of the fixed column, and a sliding body matching the second slide groove is arranged on the inner wall of the second sleeve, and the second sleeve rotates relative to the fixed column to form the sliding of the sliding body inside the second slide groove, and the sliding of the sliding body inside the second slide groove forms the axial reciprocating movement of the second sleeve relative to the fixed column.

2. The drying equipment for particleboard production according to claim 1, characterized in that: The first sleeve is sleeved on the outside of the first slide groove, the axial length of the first sleeve is greater than the axial extension length of the first slide groove on the first rotating shaft, and during the axial movement of the second rotating shaft relative to the first rotating shaft, the first sleeve always maintains complete coverage of the first slide groove.

3. The drying equipment for particleboard production according to claim 2, characterized in that: An elastic member is also provided between the fixed column and the second sleeve, and the elastic member is used for buffering when the second sleeve moves axially.

4. The drying equipment for particleboard production according to any one of claims 1 to 3, characterized in that: The first rotating shaft is rotatably connected to the frame, and the first rotating shaft and the drying cylinder have the same rotation direction.

5. The drying equipment for particleboard production according to claim 4, characterized in that: One end of the first rotating shaft extends from the drying cylinder, a first wheel body is fixedly sleeved on the end of the first rotating shaft extending from the drying cylinder, and the frame is provided with a first driving assembly for driving the first wheel body to rotate.

6. The drying equipment for particleboard production according to claim 4, characterized in that: The outside of the drying cylinder is fixedly sleeved with an outer gear ring, and the frame is provided with a second driving component for driving the outer gear ring to rotate.

7. The drying equipment for particleboard production according to claim 4, characterized in that: The first end surface of the drying cylinder is provided with a first sealing plate, and the second end surface of the drying cylinder is provided with a second sealing plate. The first sealing plate and the second sealing plate are rotatably connected to the drying cylinder respectively. The first sealing plate is fixedly provided with a feed pipe, and the second sealing plate is fixedly provided with a discharge pipe.

8. The drying equipment for particleboard production according to claim 7, characterized in that: An air inlet pipe for gas to enter the drying cylinder is fixedly arranged on the first sealing plate, and an exhaust pipe for gas to discharge from the drying cylinder is fixedly arranged on the second sealing plate.

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