Double-helix discharging device of pre-steaming bin

Abstract

The utility model provides a pre-steaming bin double-helix blanking device, which comprises a pre-steaming bin, a blanking bin, a first screw rod and a second screw rod, the upper part of the blanking bin is communicated with the lower part of the pre-steaming bin, and the lower part of the blanking bin is provided with a blanking pipe; a supporting platform is arranged on the lower portion of the discharging bin, and the first screw and the second screw are installed on the lower portion of the discharging bin in parallel. The first screw rod and the second screw rod are each provided with a left-hand thread piece and a right-hand thread piece. According to the utility model, the lower part of the pre-steaming bin is provided with the big-end-up splayed discharging bin, the double-screw rod is arranged in the discharging bin, and the left-hand thread sheet and the right-hand thread sheet are arranged on the single screw rod, so that pre-steamed wood is pushed to be discharged from the discharging pipe, and the problem that the wood is clamped at the lower part of the pre-steaming bin to cause reverse spraying of steam is avoided; and meanwhile, the pre-steaming bin can process rotary-cut veneers, wood handles, eucalyptus wood, pine miscellaneous wood and other raw materials, and the production cost of fiberboards is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wood deep processing technology, and in particular to a pre-steaming chamber double spiral feeding device. Background Technology

[0002] Fiberboard, also known as medium-density fiberboard, is a type of engineered wood product made from wood fibers or other plant fibers bonded together with urea-formaldehyde resin or other suitable adhesives. Adhesives and additives may be used during the manufacturing process. Currently, the fiberboard industry primarily uses wood as its raw material. After steaming and softening, wood fibers undergo a series of chemical treatments to obtain wood fibers, which are then further processed to produce the desired fiberboard. The market price for branches and twigs is approximately 400 yuan / ton, while the market price for rotary-cut veneers and wood handles is approximately 280 yuan / ton, offering a significant price advantage. However, the yield of rotary-cut veneers and wood handles is poor compared to raw materials such as eucalyptus and pine. For example, there are many rotary-cut grade 3 veneer chips, and raw eucalyptus chips are long and fuzzy. During pre-steaming, these chips are prone to bridging at the sloping inlet of the feed flare, causing steam backflow and production line shutdowns. Although existing equipment is equipped with a spiral feeder as disclosed in Chinese Patent Application No. 202123396531.1, the feed inlet of this type of equipment is still relatively small, and material jamming still occurs. Therefore, a double spiral feeding device for the pre-steaming chamber is needed. By setting a double spiral rod at the bottom of the pre-steaming chamber, with two opposing spiral sections on each screw, the opening of the feed inlet is increased, reducing the problem of production line shutdowns caused by steam backflow due to material jamming. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes a double-spiral feeding device for a pre-steaming chamber. By installing a double-spiral rod at the bottom of the pre-steaming chamber, with two opposing spiral sections on each rod, the opening of the feeding port is increased, reducing the problem of production line shutdown caused by steam backflow due to material jamming.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes a double-spiral feeding device for a pre-steaming chamber, comprising: a pre-steaming chamber, a feeding chamber, a first screw, and a second screw. The upper part of the feeding chamber is connected to the lower part of the pre-steaming chamber, and a feeding pipe is provided at the lower part of the feeding chamber. A support platform is provided at the lower part of the feeding chamber. The first screw and the second screw are installed in parallel at the lower part of the feeding chamber. Both the first screw and the second screw are provided with left-hand threaded plates and right-hand threaded plates, which are symmetrically distributed on both sides of the first screw and the second screw with the axis of the feeding pipe as the center.

[0006] Furthermore, the left-hand threaded plates and right-hand threaded plates on the first screw mesh with the left-hand threaded plates and right-hand threaded plates on the second screw.

[0007] Furthermore, the left-hand threaded plate and the right-hand threaded plate are respectively positioned directly above the feed tube.

[0008] Furthermore, the first screw is provided with a first gear on both sides, and the second screw is provided with a second gear on both sides, with the first gear and the second gear meshing with each other.

[0009] Furthermore, the support platform is equipped with a drive motor and a reducer. The drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is coaxially connected to the second screw.

[0010] Furthermore, the feeding bin has a figure-eight shape with a larger top and a smaller bottom, and a flared connection is provided between the lower part of the feeding bin and the feeding pipe.

[0011] The beneficial effects of this utility model are as follows: By setting an eight-shaped feeding hopper with a larger upper part and a smaller lower part at the bottom of the pre-steaming chamber, and setting a double helical rod in the feeding hopper, with a left-hand threaded plate and a right-hand threaded plate on a single screw, the pre-steamed wood is pushed out from the feeding pipe, avoiding the problem of steam backflow caused by wood getting stuck at the bottom of the pre-steaming chamber, ensuring the normal operation of the equipment. At the same time, the pre-steaming chamber can process rotary-cut veneer, wood handles and raw materials such as eucalyptus and pine mixed wood, reducing the production cost of fiberboard. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the feeding bin of this utility model;

[0014] Figure 3 This is the left view of the present invention;

[0015] In the diagram: 1-Pre-steaming chamber, 2-Feeding chamber, 3-First screw, 4-Second screw, 5-Feeding pipe, 6-Support platform, 7-Left-hand threaded plate, 8-Right-hand threaded plate, 9-First gear, 10-Second gear, 11-Drive motor, 12-Reducer, 13-Connecting part. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0018] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0019] like Figure 1 , Figure 2 , Figure 3 As shown, an embodiment of this utility model provides a pre-steaming chamber double-spiral feeding device, including: a pre-steaming chamber 1, a feeding chamber 2, a first screw 3, and a second screw 4. The upper part of the feeding chamber 2 is connected to the lower part of the pre-steaming chamber 1, and a feeding pipe 5 is provided at the lower part of the feeding chamber 2. A support platform 6 is provided at the lower part of the feeding chamber 2. The first screw 3 and the second screw 4 are installed in parallel at the lower part of the feeding chamber 2. The first screw 3 and the second screw 4 are each provided with a left-hand threaded plate 7 and a right-hand threaded plate 8. The left-hand threaded plate 7 and the right-hand threaded plate 8 are symmetrically distributed on both sides of the first screw 3 and the second screw 4 with the axis of the feeding pipe 5 as the center.

[0020] Rotary-cut veneer and wood-handled timber have a high cost advantage; however, during pre-steaming, due to the poor sheet yield of these timbers, they tend to get stuck in the traditional feed inlet. Therefore, this application includes a feed hopper 2 at the bottom of the pre-steaming chamber 1. The pre-steamed timber enters the feed hopper 2, and the drive motor 11 drives the second screw 4 to rotate. Simultaneously, the second screw 4, through the second gear 10 and the first gear 9, drives the first screw 3 to rotate in opposite directions. Driven by the left-hand threaded blade 7 and the right-hand threaded blade 8... The wood from both sides of the feeding hopper 2 is concentrated above the feeding pipe 5 and crushed by the first screw 3 and the second screw 4. After initial crushing, the wood is discharged from the feeding pipe 5 into the wood plug screw at the bottom of the feeding pipe 5 and sent to the next processing equipment. This avoids the problem of steam backflow caused by the blockage of the lower part of the pre-steaming chamber 1 by long and rough wood such as veneer chips and raw eucalyptus chips. This allows the pre-steaming chamber 1 to meet the processing needs of veneer, wood handles and other wood, reduce the production cost of fiberboard and improve product competitiveness.

[0021] In a specific embodiment, the left-hand threaded blade 7 and the right-hand threaded blade 8 on the first screw 3 mesh with the left-hand threaded blade 7 and the right-hand threaded blade 8 on the second screw 4. After the first screw 3 and the second screw 4 rotate, they drive the left-hand threaded blade 7 and the right-hand threaded blade 8 to rotate synchronously. When the left-hand threaded blade 7 and the right-hand threaded blade 8 rotate, on the one hand, they can push the wood on both sides of the feed bin 2 to move to the middle of the feed bin 2, and on the other hand, they can use the meshing of the spiral blades to initially crush larger pieces of wood, which facilitates the feeding of wood and subsequent processing.

[0022] In a preferred embodiment, the left-hand threaded plate 7 and the right-hand threaded plate 8 are positioned directly above the discharge pipe 5, so that the wood can be moved directly above after being pushed by the left-hand threaded plate 7 and the right-hand threaded plate 8. Then, after being driven by the first screw 3 and the second screw 4, the wood is discharged from the discharge pipe 5 into the discharge bin 2, thus achieving smooth discharge.

[0023] Specifically, the first screw 3 is provided with a first gear 9 on both sides, and the second screw 4 is provided with a second gear 10 on both sides. The first gear 9 and the second gear 10 mesh with each other, so that the first screw 3 can rotate synchronously with the second screw 4, and the spiral plates between the first screw 3 and the second screw 4 can mesh with each other.

[0024] Preferably, the support platform 6 is provided with a drive motor 11 and a reducer 12. The drive motor 11 is connected to the input shaft of the reducer 12, and the output shaft of the reducer 12 is coaxially connected to the second screw 4. After the drive motor 11 drives the reducer 12, it can drive the second screw 4 to rotate. At the same time, the second screw 4 drives the first screw 3 to rotate through the second gear 10 and the first gear 9. The first screw 3 and the second screw 4 achieve smooth material discharge.

[0025] Specifically, the feeding bin 2 has an eight-shaped structure that is larger at the top and smaller at the bottom, which facilitates the discharge of pre-steamed wood from the pre-steaming bin 1 and prevents the wood from getting stuck in the feeding bin 2, thus achieving smooth feeding. In addition, a trumpet-shaped connecting part 13 is provided between the lower part of the feeding bin 2 and the feeding pipe 5 to prevent the wood from getting stuck at the bottom of the feeding bin 2.

[0026] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A double-spiral feeding device for a pre-steaming chamber, characterized in that, include: The pre-steaming chamber (1), the feeding chamber (2), the first screw (3), and the second screw (4) are provided. The upper part of the feeding chamber (2) is connected to the lower part of the pre-steaming chamber (1), and the lower part of the feeding chamber (2) is provided with a feeding pipe (5). The lower part of the feeding chamber (2) is provided with a support platform (6). The first screw (3) and the second screw (4) are installed in parallel at the lower part of the feeding chamber (2). The first screw (3) and the second screw (4) are each provided with a left-hand threaded plate (7) and a right-hand threaded plate (8). The left-hand threaded plate (7) and the right-hand threaded plate (8) are symmetrically distributed on both sides of the first screw (3) and the second screw (4) with the axis of the feeding pipe (5) as the center.

2. The pre-steaming chamber double-spiral feeding device according to claim 1, characterized in that, The left-hand threaded plate (7) and the right-hand threaded plate (8) on the first screw (3) mesh with the left-hand threaded plate (7) and the right-hand threaded plate (8) on the second screw (4).

3. The pre-steaming chamber double-spiral feeding device according to claim 2, characterized in that, The left-hand threaded plate (7) and the right-hand threaded plate (8) are respectively positioned directly above the feed tube (5).

4. The pre-steaming chamber double-spiral feeding device according to claim 1, characterized in that, The first screw (3) has a first gear (9) on both sides, and the second screw (4) has a second gear (10) on both sides. The first gear (9) and the second gear (10) mesh with each other.

5. The pre-steaming chamber double-spiral feeding device according to claim 1, characterized in that, The support platform (6) is equipped with a drive motor (11) and a reducer (12). The drive motor (11) is connected to the input shaft of the reducer (12), and the output shaft of the reducer (12) is coaxially connected to the second screw (4).

6. The pre-steaming chamber double-spiral feeding device according to claim 1, characterized in that, The feeding bin (2) has a V-shaped structure with a larger top and a smaller bottom, and a trumpet-shaped connecting part (13) is provided between the lower part of the feeding bin (2) and the feeding pipe (5).

Images