Density fiberboard raw material processing device
By using an inclined screw conveyor and steam spray heating design in the production of density fiberboard, combined with the processing process of the wood screw machine and the cooking cylinder, the problem of insufficient softening of wood chips in traditional production is solved, and the processing efficiency and finished product performance are improved. Reduced production costs.
Patent Information
- Application Number
- CN202421357544.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-06-14
AI Technical Summary
During the production process of traditional denitrile fiberboard, the mill consumes a large amount of power and the service life of the grinding sheet is mainly due to the large hardness and insufficient softening of the wood sheet, which leads to low processing efficiency and high cost.
A density fiberboard raw material treatment device including a screw conveyor, a steam spray system and a chemical treatment device is designed. Through the inclined design of the screw conveyor and the steam spray heating, the wood chip raw material is uniformly heated and softened during the screw conveyor, and Dehydrate and cook through a spiral machine and a cooking tank, combining the chemical storage and the reflux utilization of the drum screen to achieve reuse of the chemical and cost reduction.
It improves the softening effect and processing efficiency of wood chips, reduces the power consumption of the mill, extends the service life of the grinding sheet, and improves the fiber form and waterproof performance of finished boards, reduces the water absorption and expansion rate, and reduces production costs through reuse of chemicals.
Smart Images
Figure CN222135307U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of density board production equipment, and in particular relates to a density fiberboard raw material processing device. Background Art
[0002] The raw material for the production of density fiberboard is mostly wood. After debarking, the wood is sent to the chipper for cutting. The processed wood chips are transported to the screening machine by a belt conveyor. The qualified wood chips after screening need to be cleaned, preheated in the pre-cooking cylinder, squeezed and dehydrated by the cork screw machine, and softened by cooking in the cooking cylinder. The softened wood chips are sent to the grinding chamber of the hot mill through the discharge screw, continuous screw and ribbon screw for fiber separation and hot grinding. After being evenly mixed with the paraffin and glue sprayed in the hot mill spray pipe, they enter the drying pipe. The dried fibers are paved and pre-pressed to form a slab, and the slab is pressed into a density fiberboard by a press.
[0003] In the traditional production system, the grinding machine consumes a lot of electricity and the service life of the grinding disc is short during the production process, and it needs to be replaced frequently. The main reason is that the wood chips are too hard and the softening degree is not enough. Therefore, a high-density fiberboard raw material processing device with good wood chip softening effect and high processing efficiency is needed. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a density fiberboard raw material processing device which has good wood chip softening effect, high processing efficiency and reduced production cost.
[0005] In order to solve the above problems, the technical solution adopted by the utility model is:
[0006] A device for processing raw materials of density fiberboard comprises a screw conveyor, wherein a feed port is arranged at the top of one end of the screw conveyor, and a discharge port is arranged at the bottom of the other end; the screw conveyor is arranged obliquely, wherein the end where the feed port is arranged is lower than the end where the discharge port is arranged; the screw conveyor is provided with a steam inlet for spraying steam inward; the screw conveyor is provided with a liquid inlet at the end where the discharge port is arranged, and the screw conveyor is provided with an overflow port at the end where the feed port is arranged.
[0007] As an embodiment of the utility model, a jacket is provided on the middle side wall of the screw conveyor, a plurality of steam spray holes for spraying steam toward the inside of the screw conveyor are evenly provided on the inner wall of the jacket, and the steam inlet is provided on the outer wall of the jacket.
[0008] As an embodiment of the utility model, the steam inlet is arranged in plurality along the conveying direction of the screw conveyor, and the plurality of steam inlets are connected to the same steam inlet pipe; the screw conveyor is a double-axis screw conveyor, and the side walls on both sides of the screw conveyor are provided with a plurality of steam inlets.
[0009] As an embodiment of the utility model, it also includes a pre-steaming bin connected to the discharge port, and a steam outlet is provided on the jacket at one end close to the feed port, and the steam outlet is connected to the pre-steaming bin through a steam exhaust pipe.
[0010] As an embodiment of the utility model, it also includes a cork screw machine and a cooking cylinder. The raw materials discharged from the discharge port of the screw conveyor are squeezed and dehydrated by the cork screw machine and then conveyed to the cooking cylinder.
[0011] As an embodiment of the utility model, it also includes a medicine storage device and a drum screen, the overflow port is connected to the drum screen through a first liquid return pipe, the drain pipe of the cork screw machine is connected to the liquid collecting bucket, and the liquid collecting bucket is connected to the drum screen through a second liquid return pipe.
[0012] As an implementation mode of the utility model, the medicine storage device is connected to the liquid inlet through a liquid adding pipe, connected to the drum screen through a first flushing pipe, and connected to the liquid collecting bucket through a second flushing pipe.
[0013] As an implementation mode of the present utility model, the discharge port of the screw conveyor is connected to the pre-steaming bin through a pipeline.
[0014] As an implementation mode of the present utility model, the angle between the screw conveyor and the horizontal plane is 12°.
[0015] As an implementation mode of the utility model, the liquid inlet is arranged at an inner side of a discharge port on the screw conveyor, and the overflow port is arranged at an inner side of a feed port on the screw conveyor.
[0016] The beneficial effects of adopting the above technical solution are:
[0017] The utility model provides a density fiberboard raw material processing device. The wood chip raw material tumbles during the conveying process of the screw conveyor so that the softening agent added through the liquid inlet is evenly distributed on the surface of the wood chip raw material. Excessive moisture can be removed through angled conveying to prevent excessive moisture from entering the pre-steaming bin and causing the wood chip raw material to float up and the cork screw machine to slip and not feed. The steam inlet sprays high-temperature steam to heat the inside of the screw conveyor and heat the wood chip raw material so that the softening agent dissolved in water reaches the reaction temperature. After the wood chip raw material is transported to the pre-steaming bin, it continues to react at a relatively low temperature, and then enters the cooking cylinder for cooking after being squeezed and dehydrated by the cork screw machine. The wood chip raw material has a good softening effect and high processing efficiency, thereby saving power consumption for the mill and increasing the service life of the grinding disc to a certain extent. In addition, the fiber morphology of the wood chip is also improved. The amount of stone powder added can be appropriately increased without increasing the glue consumption to achieve the purpose of reducing costs. At the same time, it also has the advantages of improving the waterproof performance of the finished board and reducing the water absorption expansion rate.
[0018] By setting an overflow port at the lower end of the screw conveyor, excess liquid can be discharged. The drain pipe of the cork screw machine is connected to the liquid collecting bucket, and the liquid discharged from the cork screw machine is collected by the liquid collecting bucket. The liquid discharged from the overflow port and the liquid collected by the liquid collecting bucket are filtered through the drum screen and then returned to the medicine storage device, thereby realizing the reuse of medicine and reducing production costs. The drum screen and the liquid collecting bucket are also provided with a flushing pipe to prevent wood chips from clogging the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of the utility model.
[0020] Figure 2 It is a main structural schematic diagram of the conveying and softening device in the utility model.
[0021] Figure 3 It is a top view structural schematic diagram of the conveying and softening device in the utility model.
[0022] Figure 4 It is a left-side structural schematic diagram of the conveying and softening device in the utility model.
[0023] Among them: 1 screw conveyor, 2 spiral blades, 3 support seat, 4 reduction motor, 5 feed port, 6 discharge port, 7 liquid inlet, 8 overflow port, 9 steam inlet, 10 steam outlet, 11 liquid delivery main pipe, 12 liquid adding pipe, 13 first flushing pipe, 14 second flushing pipe, 15 first liquid return pipe, 16 steam inlet pipe, 17 steam discharge pipe, 18 second liquid return pipe, 19 medicine storage device, 20 drum screen, 21 pre-steaming silo, 22 cork screw machine, 23 liquid collecting hopper, 24 cooking cylinder, 25 jacket. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is clearly and completely described below in conjunction with specific embodiments.
[0025] like Figure 1 A density fiberboard raw material processing device shown in the figure comprises a screw conveyor 1, wherein a feed port 5 is provided at the top of one end of the screw conveyor 1, and a discharge port 6 is provided at the bottom of the other end. The screw conveyor 1 is tilted, wherein the end with the feed port 5 is lower than the end with the discharge port 6. Preferably, the screw conveyor 1 forms an angle of 12° with the horizontal plane; a steam inlet 9 for spraying steam inward is provided on the screw conveyor 1; a liquid inlet 7 is provided on the end with the discharge port 6 of the screw conveyor 1, and an overflow port 8 is provided on the end with the feed port 5 of the screw conveyor 1. The two ends of the spiral blade 2 in the screw conveyor 1 pass through the two ends of the screw conveyor 1 and are rotatably connected to the support seat 3 and the reduction motor 4 respectively.
[0026] The utility model provides a density fiberboard raw material processing device. The wood chip raw material tumbles during the conveying process of the screw conveyor 1 so that the softening agent added through the liquid inlet 7 is evenly distributed on the surface of the wood chip raw material. Excessive moisture can be removed through angled conveying to prevent excessive moisture from entering the pre-steaming bin 21, causing the wood chip raw material to float and the cork screw machine 22 to slip and not feed. The steam inlet 9 sprays high-temperature steam to heat the inside of the screw conveyor 1 and heat the wood chip raw material so that the softening agent dissolved in water reaches the reaction temperature. After the wood chip raw material is transported to the pre-steaming bin 21, it continues to react at a relatively low temperature, and then enters the cooking cylinder 24 for cooking after being squeezed and dehydrated by the cork screw machine 22. The wood chip softening effect is good and the processing efficiency is high.
[0027] like Figure 2-Figure 4 As shown, in this embodiment, a cylindrical jacket 25 is provided on the side wall of the middle part of the screw conveyor 1, and the jacket 25 is located between the liquid inlet 7 and the overflow port 8. A plurality of steam spray holes for spraying steam toward the inside of the screw conveyor 1 are evenly provided on the inner wall of the jacket 25, and the steam inlet 9 is provided on the outer wall of the jacket 25. A plurality of steam inlets 9 are provided along the conveying direction of the screw conveyor 1, and the plurality of steam inlets 9 are connected to the same steam inlet pipe 16. As a further optimization, the screw conveyor 1 is a double-axis screw conveyor, and a plurality of steam inlets 9 are provided on the side walls on both sides of the screw conveyor 1.
[0028] As a further optimization, the density fiberboard raw material processing device also includes a pre-steaming bin 21 connected to the discharge port 6, and a steam outlet 10 is provided on the jacket 25 at one end close to the feed port 5, and the steam outlet 10 is provided at the bottom of the jacket 25. The steam outlet 10 is connected to the pre-steaming bin 21 through a steam exhaust pipe 17, so as to ensure that the steam in the jacket 25 is always at a set temperature, and the remaining steam in the jacket 25 can be reused to reduce energy waste. As a further optimization, the discharge port 6 of the screw conveyor 1 is connected to the pre-steaming bin 21 through a pipeline, which can prevent steam leakage and allow excess steam to enter the pre-steaming bin 21 through the steam exhaust pipe 17.
[0029] As a further optimization, the density fiberboard raw material processing device also includes a cork screw machine 22 and a cooking cylinder 24. The raw materials discharged from the discharge port 6 of the screw conveyor 1 are squeezed and dehydrated by the cork screw machine 22 and then conveyed to the cooking cylinder 24 for processing.
[0030] As a further optimization, the density fiberboard raw material processing device also includes a medicine storage device 19 and a drum screen 20, the overflow port 8 is connected to the drum screen 20 through the first liquid return pipe 15, the drain pipe of the cork screw machine 22 is connected to the liquid collecting hopper 23, and the liquid collecting hopper 23 is connected to the drum screen 20 through the second liquid return pipe 18. By arranging the overflow port 8 at the lower end of the screw conveyor 1, the excess liquid can be discharged, the drain pipe of the cork screw machine 22 is connected to the liquid collecting hopper 23, and the liquid discharged from the cork screw machine 22 is collected by the liquid collecting hopper 23. The liquid discharged from the overflow port 8 and the liquid collected by the liquid collecting hopper 23 are filtered through the drum screen 20 and then flow back into the medicine storage device 19, so as to realize the reuse of medicine and reduce the production cost.
[0031] The medicine storage device 19 is connected to the liquid inlet 7 through the liquid adding pipe 12, connected to the drum screen 20 through the first flushing pipe 13, and connected to the liquid collecting hopper 23 through the second flushing pipe 14, wherein the liquid adding pipe 12, the first flushing pipe 13 and the second flushing pipe 14 are branch pipes, which are connected to the medicine storage device 19 through the liquid delivery main pipe 11, and the medicine storage device 19 has the function of configuring medicine. The drum screen 20 and the liquid collecting hopper 23 are provided with the first flushing pipe 13 and the second flushing pipe 14, which can prevent the pipes from being blocked by falling wood chips.
[0032] like Figure 2 As shown, in this embodiment, the liquid inlet 7 is arranged on the inner side (left side) of the discharge port 6 on the screw conveyor 1, and the overflow port 8 is arranged on the inner side (right side) of the feed port 5 on the screw conveyor 1.
[0033] Specific working process:
[0034] The wood chip raw material is added into the inclined screw conveyor 1 through the feed port 5. Under the conveyance of the spiral blade 2, the wood chip raw material moves toward the discharge port 6. During the movement, a softening agent is added through the liquid adding pipe 12, steam is conveyed into the jacket 25 through the steam inlet 9, and steam is sprayed inside the screw conveyor 1 through the steam spray hole to soften and delignify the wood chip raw material in the tumbling conveyance. The remaining liquid and steam are discharged through the overflow port 8 and the steam outlet 10 respectively.
[0035] The wood chips discharged through the discharge port 6 enter the pre-steaming bin 21 for preheating, and then are squeezed and dehydrated by the cork screw machine 22 and then transported to the cooking tank 24 for cooking and softening.
[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A density fiberboard raw material processing device, characterized in that: It includes a screw conveyor, which is provided with a feed port at the top of one end and a discharge port at the bottom of the other end. The screw conveyor is inclined, wherein the end with the feed port is lower than the end with the discharge port; the screw conveyor is provided with a steam inlet for conveying steam inward; the screw conveyor is provided with a liquid inlet at the end with the discharge port, and the screw conveyor is provided with an overflow port at the end with the feed port.
2. A density fiberboard raw material processing device according to claim 1, characterized in that: A jacket is arranged on the side wall of the middle part of the screw conveyor, a plurality of steam spray holes for spraying steam toward the inside of the screw conveyor are evenly arranged on the inner wall of the jacket, and the steam inlet is arranged on the outer wall of the jacket.
3. A density fiberboard raw material processing device according to claim 2, characterized in that: The steam inlets are arranged in plurality along the conveying direction of the screw conveyor, and the plurality of steam inlets are connected to the same steam inlet pipe; the screw conveyor is a double-axis screw conveyor, and the side walls on both sides of the jacket are provided with a plurality of steam inlets.
4. A density fiberboard material processing device according to claim 2 or 3, characterized in that: It also includes a pre-steaming bin connected to the discharge port, and a steam outlet is arranged on the jacket at one end close to the feed port, and the steam outlet is connected to the pre-steaming bin through a steam exhaust pipe.
5. A density fiberboard material processing device according to claim 4, characterized in that: It also includes a cork screw machine and a cooking cylinder. The raw materials discharged from the discharge port of the screw conveyor are squeezed and dehydrated by the cork screw machine and then conveyed to the cooking cylinder.
6. A density fiberboard material processing device according to claim 5, characterized in that: It also includes a medicine storage device and a drum screen, the overflow port is connected to the drum screen through a first liquid return pipe, the drain pipe of the cork screw machine is connected to a liquid collecting hopper, and the liquid collecting hopper is connected to the drum screen through a second liquid return pipe.
7. A density fiberboard material processing device according to claim 6, characterized in that: The medicine storage device is connected to the liquid inlet through a liquid adding pipe, connected to the drum screen through a first flushing pipe, and connected to the liquid collecting bucket through a second flushing pipe.
8. The device for processing high density fiberboard raw materials according to claim 4, characterized in that: The discharge port of the screw conveyor is connected to the pre-steaming bin through a pipeline.
9. The device for processing high density fiberboard raw materials according to claim 1, characterized in that: The angle between the screw conveyor and the horizontal plane is 12°.
10. The device for processing high density fiberboard raw materials according to claim 1, characterized in that: The liquid inlet is arranged at an inner side of a discharge port on the screw conveyor, and the overflow port is arranged at an inner side of a feed port on the screw conveyor.