CN115284402B - Double-cone-bottom wood chip pre-cooking cylinder - Google Patents
Double-cone-bottom wood chip pre-cooking cylinder Download PDFInfo
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- CN115284402B CN115284402B CN202210877862.7A CN202210877862A CN115284402B CN 115284402 B CN115284402 B CN 115284402B CN 202210877862 A CN202210877862 A CN 202210877862A CN 115284402 B CN115284402 B CN 115284402B
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- 239000002023 wood Substances 0.000 title claims abstract description 112
- 238000010411 cooking Methods 0.000 title claims abstract description 81
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000005507 spraying Methods 0.000 abstract description 7
- 230000007246 mechanism Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011094 fiberboard Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002522 Wood fibre Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/001—Heating
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Debarking, Splitting, And Disintegration Of Timber (AREA)
Abstract
The invention discloses a double-cone-bottom wood chip precooking cylinder which mainly comprises a precooking cylinder body, an adjustable speed motor, a speed reducer, a reverse spiral, a forward spiral and a primary cone bottom; the bottom of the precooking cylinder body is set to be a secondary conical bottom; the primary conical bottom is arranged in the pre-cooking cylinder body and divides the inner cavity of the pre-cooking cylinder body into a pre-cooking chamber and a feeding chamber; the speed-adjustable motor and the speed reducer are arranged at the top of the precooking cylinder body; the reverse spiral and the forward spiral are arranged in the pre-cooking chamber, wherein the top end of the reverse spiral is connected with an output rotating shaft of the speed reducer, and the bottom end of the reverse spiral is rigidly connected with the top end of the forward spiral; the bottom end of the forward spiral extends to the bottom outlet of the primary conical bottom. The invention provides a novel pre-cooking cylinder structure for enterprises, which fundamentally solves the problems of wood chip bridging of the pre-cooking cylinder and steam back spraying of a feeding mechanism, reduces the production energy consumption and equipment abrasion of the enterprises and improves the production efficiency of the enterprises.
Description
Technical Field
The invention belongs to the technical field of wood board production and processing, and particularly relates to a double-cone-bottom wood chip pre-cooking cylinder.
Background
The artificial medium (high) density fiberboard is an important engineering material and is widely applied to the fields of furniture manufacture, vehicles, ships, buildings, indoor and outdoor decoration and the like. In the production process of the medium (high) density fiberboard, raw wood chips are required to be steamed and boiled to be softened, so that the wood fiber is beneficial to grinding. Enterprises are in order to reduce the energy consumption of the thermal mill and the cooking time of the wood chips in the cooking cylinder, improve the production efficiency, and generally utilize waste steam to pre-cook the wood chips before the wood chips enter the cooking cylinder of the thermal mill so as to primarily soften the wood chips. The precooking of the wood chips is usually carried out in a precooking vat. In order to match the size of the feeding screw feed inlet of the pre-cooking cylinder, the pre-cooking cylinder needs to be made into a structure with a large upper part and a small lower part, and the structure with the large upper part and the small lower part easily causes the phenomenon that wood chips form an arch bridge at the discharging hole at the lower part of the pre-cooking cylinder (see figure 1), so that the wood chips cannot normally enter the feeding screw (wood plug screw). Once the feeding screw (wood plug screw) is in shortage, a wood plug cannot be formed at the outer plug pipe, so that high-temperature and high-pressure steam in the cooking cylinder is sprayed out from the outer plug pipe through a feeding screw (wood plug screw) channel, a reverse spraying phenomenon is caused, once the reverse spraying phenomenon occurs, the cooking cylinder cannot work normally due to the loss of steam and pressure, and finally, the production line is stopped. For this phenomenon, various enterprises adopt different methods to solve the problem of 'bridging' of the precooking cylinder: some enterprises adopt two oscillators (see figure 1) symmetrically arranged on the outer side of the conical bottom of the precooking cylinder to prevent the wood chips from bridging through oscillation, however, the method is not only noisy, but also can make the wood chips in the cylinder bridge more easily as the wood chips in the cylinder are more shocked and more solid. Still other enterprises adopt unidirectional vertical spiral to feed wood plug spiral compulsorily; for example, chinese patent application No. 201821044717.6 discloses a pre-cooking cylinder for preventing wood chips from bridging, comprising a cylinder body, wherein the top of the cylinder body is provided with a feed opening, the bottom of the cylinder body is provided with a discharge opening, and the cylinder body further comprises a forced screw rotatably arranged on a central shaft of the cylinder body and a driving mechanism fixed on the top of the cylinder body and used for driving the forced screw to rotate; the upper end of the forced screw is connected with the driving mechanism through a coupler, and the lower end of the forced screw extends to the upper part of the discharge hole; the driving mechanism is in spiral coupling with the wood plug through a PLC control system. As another example, chinese patent application No. 202120242469.1 discloses a feeding mechanism of a cooking cylinder, which comprises a pre-cooking cylinder, wherein the top of the pre-cooking cylinder is provided with a wood chip feeding port, and the bottom of the pre-cooking cylinder is provided with a wood chip discharging port; the top of the pre-cooking cylinder is also provided with a spiral driving motor, a vertical screw rod is arranged in the pre-cooking cylinder, the top end of the vertical screw rod is connected with the transmission output end of the spiral driving motor through a coupling, the lower end of the vertical screw rod is positioned above the wood chip discharge port and provided with a spiral blade, and the rotation of the spiral blade can realize the stable feeding of the wood chips; and the bottom of the vertical screw is provided with light-sensitive feedback electronic equipment for monitoring whether the wood chip discharge hole is blocked. However, the method can lead the wood plug screw to bear strong extra pressure, accelerate the abrasion of the wood plug screw, and greatly improve the energy consumption. Up to the present, various wood chip bridging prevention measures adopted by enterprises have little effect. Enterprises are expected to fundamentally solve the problem of wood chip bridging of the precooking cylinder.
Disclosure of Invention
The invention aims to provide a double-cone-bottom wood chip precooking cylinder. The invention provides a novel pre-cooking cylinder structure and a method for preventing wood chips from bridging for enterprises, which fundamentally solve the wood chip bridging problem of the pre-cooking cylinder and the steam back-spraying problem of a feeding mechanism, reduce the production energy consumption and equipment abrasion of the enterprises and improve the production efficiency of the enterprises.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a double-cone-bottom wood chip precooking cylinder mainly comprises a precooking cylinder body, an adjustable speed motor, a speed reducer, a reverse spiral, a forward spiral and a primary cone bottom; the bottom of the precooking cylinder body is set to be a secondary conical bottom; the primary conical bottom is arranged in the pre-cooking cylinder body and divides the inner cavity of the pre-cooking cylinder body into a pre-cooking chamber and a feeding chamber; the speed-adjustable motor and the speed reducer are arranged at the top of the precooking cylinder body; the reverse spiral and the forward spiral are arranged in the pre-cooking chamber, wherein the top end of the reverse spiral is connected with the output rotating shaft of the speed reducer, and the bottom end of the reverse spiral is rigidly connected with the top end of the forward spiral; the bottom end of the forward spiral extends to the bottom outlet of the primary conical bottom.
As a further preferred refinement of the invention, the length ratio of the reverse spiral to the forward spiral is 3:1.
As a further preferred refinement of the invention, the cone angle of the primary cone base and the secondary cone base is 75 °.
As a further explanation of the invention, the lower part of the precooking cylinder is provided with an observation opening for observing the accumulation of wood chips in the feeding chamber.
As a further explanation of the invention, the speed-adjustable motor drives the reverse spiral and the forward spiral to rotate through the speed reducer; wherein the rotation of the reverse spiral makes the wood chips at the middle upper part in the pre-cooking chamber move upwards to loosen the wood chips; and the forward spiral rotates to enable the wood chips at the lower part of the pre-cooking chamber to move downwards, and quantitatively feed the wood chips into the feeding chamber through the bottom outlet of the primary conical bottom.
As a further explanation of the invention, the top of the precooking cylinder body is provided with a feed inlet; the bottom of the precooking cylinder body (namely the bottom outlet of the secondary conical bottom) is a discharge hole and is communicated with a feeding groove of the wood plug screw.
Compared with the prior art (for example, patent application numbers 201821044717.6 and 202120242469.1), the innovation points of the invention are that:
1. the invention relates to a double-cone-bottom wood chip precooking cylinder, which structurally adopts a double-cone-bottom structure, namely a primary cone bottom is added, and the inner cavity of the precooking cylinder is divided into a precooking chamber and a feeding chamber. Wherein the pre-cooking chamber is used for pre-cooking wood chips, and the feeding chamber is used for providing conditions for realizing continuous, quantitative and free feeding to the wood plug screw; the free feeding allows the wood plug screw to be protected from additional feeding pressure, and the service life is prolonged. The prior art with patent application numbers 201821044717.6 and 202120242469.1 directly sets up unidirectional vertical spiral blades in the cylinder body, and although the bridging phenomenon is solved to a certain extent at the beginning, the prior art directly forcibly feeds the wood plug spiral, and huge additional feeding pressure can be generated for the wood plug spiral, even when the feeding speed is higher than the feeding speed of the wood plug spiral, the more the wood at the bottom outlet of the precooking cylinder body is accumulated, the more the wood is compacted, and finally the phenomena of incapability of smooth feeding and machine shutdown are caused.
2. The invention discloses a double-cone-bottom wood chip precooking cylinder, which is additionally provided with a set of speed-adjustable bidirectional spiral feeding device, wherein the device consists of a speed-adjustable motor, a speed reducer, a reverse spiral, a forward spiral and other parts. Wherein the speed-adjustable motor and the speed reducer are used for providing a speed-adjustable power source for the feeding device. The amount of material fed is increased when the motor speed is increased, and the amount of material fed is reduced when the motor speed is reduced, and the amount of material fed is set according to the production amount. The reverse spiral is used for enabling the wood chips in the pre-cooking chamber to move upwards, so that the aim of loosening the wood chips and reducing the feeding resistance is fulfilled. The forward spiral is used for quantitatively and uniformly feeding materials into the feeding chamber according to the rotating speed set by the adjustable speed motor, so that the wood plug spiral is quantitatively and uniformly ensured to obtain enough materials, and further the wood chips can form a sufficiently compact wood plug at the outer plug pipe, and the phenomenon of reverse spraying is avoided.
3. The key technology of the double-cone-bottom wood chip precooking cylinder, which does not generate the phenomenon of wood chip bridging when the wood plug is fed in a spiral manner, is as follows: the invention successfully utilizes forward spiral to quantitatively and uniformly feed into the feeding chamber, the feeding amount is balanced with the requirement amount of the wood plug spiral, so that a large amount of wood chips are not piled up in the feeding chamber, and the two-stage conical bottom in the feeding chamber can not always provide enough friction force required for forming an arch pier due to small and loose wood chip amount and small pressure on the two-stage conical bottom, and a bridge is naturally not taken up, thereby fundamentally solving the problem of wood chip bridging of the pre-cooking cylinder.
The invention has the advantages that:
the invention has scientific and reasonable structural design, is simple and feasible, and can fundamentally solve the problem of the wood chip bridging phenomenon in the precooking cylinder. The invention adds the primary conical bottom in the pre-cooking cylinder, and forms a double-conical bottom structure together with the secondary conical bottom at the bottom of the pre-cooking cylinder, so that the inner cavity of the pre-cooking cylinder is divided into two chambers, namely a pre-cooking chamber and a feeding chamber; the reverse spiral and the forward spiral are arranged in the pre-cooking chamber, so that the wood chips at the upper middle part move upwards, the loose state of the wood chips is kept, the wood chips at the lower part move downwards, the wood chips smoothly enter the feeding chamber, the wood chips in the feeding chamber are controllable in quantity, and the bridging phenomenon caused by the backlog of the wood chips is avoided.
Drawings
Fig. 1 is a schematic diagram of a prior art chip precooking cylinder structure and a chip "bridging" phenomenon thereof.
Fig. 2 is a schematic structural view of an embodiment of the present invention.
Reference numerals: the device comprises a 1-belt conveyor, 2-wood chips, a 3-adjustable speed motor, a 4-speed reducer, a 5-precooking cylinder body, a 6-reverse spiral, a 7-forward spiral, an 8-primary conical bottom, a 9-air inlet pipe I, a 10-secondary conical bottom, an 11-observation port, a 12-pressure gauge, a 13-air inlet pipe II, a 14-anti-backfire device, a 15-cooking cylinder, a 16-outer plug pipe, a 17-dewatering sleeve, a 18-wood plug spiral, a 19-large bearing, a 20-speed reducer, a 21-direct current motor, a 22-precooking chamber, a 23-feeding chamber, a 24-vibrator and a 25-wood chip bridge.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1:
the double-cone-bottom wood chip pre-cooking cylinder mainly comprises a pre-cooking cylinder body 5, an adjustable speed motor 3, a speed reducer 4, a reverse spiral 6, a forward spiral 7 and a primary cone bottom 8; the bottom of the pre-cooking cylinder body 5 is provided with a secondary conical bottom 10; the primary conical bottom 8 is arranged in the pre-cooking cylinder body 5 and divides the inner cavity of the pre-cooking cylinder body 5 into a pre-cooking chamber 22 and a feeding chamber 23; the cone angles of the primary conical bottom 8 and the secondary conical bottom 10 are 75 degrees, and the speed-adjustable motor 3 and the speed reducer 4 are arranged at the top of the precooking cylinder body 5; the reverse spiral 6 and the forward spiral 7 are installed in the pre-cooking chamber 22, wherein the top end of the reverse spiral 6 is connected with the output rotating shaft of the speed reducer 4, and the bottom end of the reverse spiral 6 is rigidly connected with the top end of the forward spiral 7; the bottom end of the forward spiral 7 extends to the bottom outlet of the primary conical bottom 8, and the length ratio of the reverse spiral 6 to the forward spiral 7 is 3:1.
Example 2:
the double-cone-bottom wood chip pre-cooking cylinder mainly comprises a pre-cooking cylinder body 5, an adjustable speed motor 3, a speed reducer 4, a reverse spiral 6, a forward spiral 7 and a primary cone bottom 8; the bottom of the pre-cooking cylinder body 5 is provided with a secondary conical bottom 10; the primary conical bottom 8 is arranged in the pre-cooking cylinder body 5 and divides the inner cavity of the pre-cooking cylinder body 5 into a pre-cooking chamber 22 and a feeding chamber 23; the cone angles of the primary conical bottom 8 and the secondary conical bottom 10 are 75 degrees, and the speed-adjustable motor 3 and the speed reducer 4 are arranged at the top of the precooking cylinder body 5; the reverse spiral 6 and the forward spiral 7 are installed in the pre-cooking chamber 22, wherein the top end of the reverse spiral 6 is connected with the output rotating shaft of the speed reducer 4, and the bottom end of the reverse spiral 6 is rigidly connected with the top end of the forward spiral 7; the bottom end of the forward spiral 7 extends to the bottom outlet of the primary conical bottom 8, and the length ratio of the reverse spiral 6 to the forward spiral 7 is 3:1.
The speed-adjustable motor 3 drives the reverse spiral 6 and the forward spiral 7 to rotate through the speed reducer 4; wherein the rotation of the reverse spiral 6 moves the wood chips at the middle and upper parts in the pre-cooking chamber 22 upwards to loosen the wood chips; the rotation of the forward spiral 7 causes the wood chips at the lower part in the pre-cooking chamber 22 to move downwards, and the wood chips are quantitatively fed into the feeding chamber 23 through the bottom outlet of the primary conical bottom 8.
Example 3:
the double-cone-bottom wood chip pre-cooking cylinder mainly comprises a pre-cooking cylinder body 5, an adjustable speed motor 3, a speed reducer 4, a reverse spiral 6, a forward spiral 7 and a primary cone bottom 8; the bottom of the pre-cooking cylinder body 5 is provided with a secondary conical bottom 10; the primary conical bottom 8 is arranged in the pre-cooking cylinder body 5 and divides the inner cavity of the pre-cooking cylinder body 5 into a pre-cooking chamber 22 and a feeding chamber 23; the cone angles of the primary conical bottom 8 and the secondary conical bottom 10 are 75 degrees, and the speed-adjustable motor 3 and the speed reducer 4 are arranged at the top of the precooking cylinder body 5; the reverse spiral 6 and the forward spiral 7 are installed in the pre-cooking chamber 22, wherein the top end of the reverse spiral 6 is connected with the output rotating shaft of the speed reducer 4, and the bottom end of the reverse spiral 6 is rigidly connected with the top end of the forward spiral 7; the bottom end of the forward spiral 7 extends to the bottom outlet of the primary conical bottom 8, and the length ratio of the reverse spiral 6 to the forward spiral 7 is 3:1. The lower part of the precooking cylinder body 5 is provided with an observation opening 11 for observing the accumulation condition of wood chips in the feeding chamber 23.
The working principle of the double-cone-bottom wood chip pre-cooking cylinder applied to the wood chip cooking production line in the embodiment is shown in fig. 2:
the wood chips 2 are sent into the precooking cylinder 5 by the belt conveyor 1, and the wood chips entering the precooking cylinder 5 are supported by the primary conical bottom 8. After the wood chips in the cylinder are full to a preset height, the speed-adjustable motor 3 is started, and the reverse spiral 6 and the forward spiral 7 are driven to rotate through the speed reducer 4. At the same time, the DC motor 21 is started to rotate the wood plug screw (feeding screw) 18. Wherein the rotation of the reverse screw 6 moves the wood chips in the cylinder upwards, loosens the wood chips, and the rotation of the forward screw 7 moves the wood chips downwards, and the wood chips are quantitatively fed into the feeding chamber 23 through the bottom outlet of the primary conical bottom 8. After entering the feeding chamber 23, the wood chips fall freely into the feed chute of the plug screw 18, thereby achieving free feeding of the plug screw 18 rather than forced feeding. The wood plug screw 18 is a conical screw with a compression ratio of 2.5:1, and compresses the wood chips in the process of conveying the wood chips to the cooking cylinder 15, so that the wood chips form a compact 'wood plug' at the position of the outer plug pipe 16 (the feed port of the cooking cylinder 15), and the effect of plugging the feed port of the cooking cylinder 15 to prevent high-temperature and high-pressure steam from leaking out of the feed port is achieved, and the air pressure and the temperature in the cooking cylinder 15 are prevented from being influenced by the feed.
In the production process, if the wood chips in the pre-cooking cylinder 5 cannot be normally and continuously and quantitatively fed to the wood plug screw 18 due to the reasons of bypass and the like, the wood plug screw 18 cannot form a compact wood plug at the outer plug pipe 16 (the feed port of the cooking cylinder 15) due to insufficient materials, and at the moment, high-temperature and high-pressure gas in the cooking cylinder 15 is sprayed out of the outer plug pipe 16, which is a phenomenon known as 'back spraying' in the industry. The double-cone-bottom wood chip precooking cylinder thoroughly solves the problem of wood chip bridging, ensures that the phenomenon of reverse spraying of the wood plug screw 18 caused by wood chip outage does not occur, and ensures the normal production of a production line.
It is to be understood that the above-described embodiments are merely illustrative of the invention and are not intended to limit the practice of the invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art; it is not necessary here nor is it exhaustive of all embodiments; and obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (2)
1. The utility model provides a wood chip precooking jar at double cone end which characterized in that: mainly comprises a precooking cylinder body (5), an adjustable speed motor (3), a speed reducer (4), a reverse spiral (6), a forward spiral (7) and a primary conical bottom (8);
the bottom of the pre-cooking cylinder body (5) is provided with a secondary conical bottom (10); the cone angles of the primary cone-shaped bottom (8) and the secondary cone-shaped bottom (10) are 75 degrees;
the primary conical bottom (8) is arranged in the pre-cooking cylinder body (5) and divides the inner cavity of the pre-cooking cylinder body (5) into a pre-cooking chamber (22) and a feeding chamber (23);
the adjustable speed motor (3) and the speed reducer (4) are arranged at the top of the precooking cylinder body (5);
the reverse spiral (6) and the forward spiral (7) are arranged in the pre-cooking chamber (22), wherein the top end of the reverse spiral (6) is connected with the output rotating shaft of the speed reducer (4), and the bottom end of the reverse spiral (6) is rigidly connected with the top end of the forward spiral (7); the bottom end of the forward spiral (7) extends to the bottom outlet of the primary conical bottom (8); the length ratio of the reverse spiral (6) to the forward spiral (7) is 3:1;
the speed-adjustable motor (3) drives the reverse spiral (6) and the forward spiral (7) to rotate through the speed reducer (4); wherein the rotation of the reverse spiral (6) enables the wood chips at the middle upper part in the pre-cooking chamber (22) to move upwards so as to loosen the wood chips; the forward spiral (7) rotates to enable wood chips at the lower part in the pre-cooking chamber (22) to move downwards, and quantitatively feed materials into the feeding chamber (23) through the bottom outlet of the primary conical bottom (8);
a feed inlet is arranged at the top of the precooking cylinder body (5); the bottom of the precooking cylinder body (5) is a discharge hole.
2. The double cone bottom chip precooking vat according to claim 1, characterized in that: an observation port (11) is arranged at the lower part of the precooking cylinder body (5) and is used for observing the stacking condition of wood chips in the feeding chamber (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210877862.7A CN115284402B (en) | 2022-07-25 | 2022-07-25 | Double-cone-bottom wood chip pre-cooking cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210877862.7A CN115284402B (en) | 2022-07-25 | 2022-07-25 | Double-cone-bottom wood chip pre-cooking cylinder |
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| Publication Number | Publication Date |
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| CN115284402A CN115284402A (en) | 2022-11-04 |
| CN115284402B true CN115284402B (en) | 2024-02-06 |
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| CN202210877862.7A Active CN115284402B (en) | 2022-07-25 | 2022-07-25 | Double-cone-bottom wood chip pre-cooking cylinder |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554824A (en) * | 2003-12-20 | 2004-12-15 | 施品华 | Artificial plate wooden sheet no-bridge preheating bunker and anti-blocking method |
| CN2704603Y (en) * | 2003-12-20 | 2005-06-15 | 施品华 | Pre-heating stock bin of plywood sheets against pile-up block |
| CN102493241A (en) * | 2011-12-16 | 2012-06-13 | 中国林业科学研究院林产化学工业研究所 | Wood chip extrusion method and equipment for chemimechanical pulping |
| CN104846676A (en) * | 2015-05-25 | 2015-08-19 | 南宁糖业股份有限公司 | Method of producing bleached chemi-mechanical pulp from Eucalyptus sheets |
-
2022
- 2022-07-25 CN CN202210877862.7A patent/CN115284402B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554824A (en) * | 2003-12-20 | 2004-12-15 | 施品华 | Artificial plate wooden sheet no-bridge preheating bunker and anti-blocking method |
| CN2704603Y (en) * | 2003-12-20 | 2005-06-15 | 施品华 | Pre-heating stock bin of plywood sheets against pile-up block |
| CN102493241A (en) * | 2011-12-16 | 2012-06-13 | 中国林业科学研究院林产化学工业研究所 | Wood chip extrusion method and equipment for chemimechanical pulping |
| CN104846676A (en) * | 2015-05-25 | 2015-08-19 | 南宁糖业股份有限公司 | Method of producing bleached chemi-mechanical pulp from Eucalyptus sheets |
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| CN115284402A (en) | 2022-11-04 |
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