Biofuel furnace for plastic melting
By incorporating a cutter and pusher plate structure at the feed inlet, the problem of existing devices being unable to handle large volumes of plastic is solved, achieving efficient plastic melting and heat retention, and improving melting efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-14
AI Technical Summary
Existing plastic melting equipment is unable to efficiently process large-volume plastic products, resulting in low melting efficiency.
A cutter and pusher plate structure is set at the feed inlet. The cutter is driven by a motor to cut large-volume plastic through a connecting rod, and the pusher plate is used to quickly push the cut plastic into the furnace body, reducing heat loss and improving melting efficiency.
It enables efficient cutting and rapid melting of large-volume plastics, reduces heat loss, and improves melting efficiency.
Smart Images

Figure CN224114847U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic product processing technology, specifically to a biofuel furnace for plastic melting. Background Technology
[0002] A biofuel furnace for plastic melting is a device that combines biomass fuel and plastic waste treatment technology. It is primarily used to convert plastic waste into biofuel or other useful resources, a technology of significant importance in environmental protection and energy recovery. Using biofuel furnaces to treat plastic waste not only reduces environmental pollution but also creates economic value, making it a promising technology that can play a vital role in environmental protection and energy recovery.
[0003] A typical fuel furnace includes a furnace body, a combustion heating system, a control system, a flue gas system, a feed inlet, and a discharge box. The feed inlet and discharge outlet are located on the furnace body. When in use, plastic enters the furnace body through the feed inlet. The furnace body is turned on, and the control system controls the combustion heating system to provide a heat source for the furnace body. The gas generated by melting is discharged from the furnace body through the flue gas system, and the molten material enters the discharge box for periodic cleaning.
[0004] However, since existing melting devices generally do not have a crushing function, it is difficult to melt large-volume plastic products efficiently.
[0005] Based on this, this utility model designs a biofuel furnace for plastic melting to solve the above problems. Utility Model Content
[0006] To achieve the above objectives, this utility model provides the following technical solution: a connecting rod is rotatably mounted on the feed inlet, a cutter is ringed on the connecting rod, a motor is mounted on the furnace body, the rotating shaft of the motor is coaxially connected to the connecting rod, a hopper is mounted at the end of the feed inlet away from the furnace body, a fixing rod is fixedly mounted on the inner wall of the hopper, a push plate is rotatably mounted on the fixing rod, and a curved surface is provided at the bottom of the hopper, the curved surface bends toward the feed inlet with the fixing rod as the center.
[0007] By adopting the above technical solution, the push plate is rotated upwards to pour plastic into the hopper. The plastic slides down the curved surface of the hopper. At this time, the push plate is closed and the motor is started, causing the connecting rod to drive the cutter to start rotating. The cutter cuts the plastic passing through the feed inlet, causing some larger plastics to be cut and crushed. The cut plastic enters the furnace body as the cutter rotates. One end of the push plate hangs down with the fixed rod as the center. The hanging push plate continues to push the remaining plastic towards the feed inlet along the curved surface, allowing the plastic to enter the furnace body more quickly. At the same time, it can isolate the connection between the furnace body and the outside world, reduce the loss of heat from the feed inlet, and improve the melting efficiency of the furnace body.
[0008] Preferably, limiting blocks are provided on both sides of the connecting rod, and the limiting blocks are fixedly connected to the furnace body. When one end of the push plate hangs down naturally, the push plate abuts against the limiting block.
[0009] By adopting the above technical solution, the push plate stops rotating when it comes into contact with the limit block, thus avoiding contact between the push plate and the cutter. At the same time, it can also reduce the overflow of plastic when it is cut and improve the feeding speed.
[0010] Preferably, a counterweight is provided at the end of the push plate away from the fixed rod, and the counterweight is provided with a groove.
[0011] By adopting the above technical solution, the pusher plate can more efficiently push the plastic block towards the feed inlet, and at the same time, it can serve as a force point to facilitate the opening and closing of the pusher plate, making the use of the pusher plate easier and more convenient.
[0012] Preferably, the push plate is provided with a transparent plate.
[0013] By adopting the above technical solution, it is convenient to observe the cutting and dropping of plastic.
[0014] In summary, this application has the following beneficial technical effects: The upward rotation of the push plate pours plastic into the hopper, where it slides down the curved surface of the hopper. The push plate is then closed, and the motor is started, causing the connecting rod to rotate the cutter. The cutter cuts the plastic passing through the feed inlet, pulverizing larger pieces. The cut plastic then enters the furnace body as the cutter rotates. One end of the push plate hangs downwards around the fixed rod, pushing the remaining plastic along the curved surface towards the feed inlet, allowing the plastic to enter the furnace body more quickly. Simultaneously, it isolates the furnace body from the outside environment, reducing heat loss from the feed inlet and improving the furnace's melting efficiency. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this embodiment;
[0017] Figure 2 This is a schematic diagram of the material storage hopper structure in this embodiment;
[0018] Figure 3 This is a partial cross-sectional schematic diagram of the material storage hopper and the furnace body in this embodiment.
[0019] The attached diagram lists the components represented by each number as follows:
[0020] 1. Furnace body; 2. Storage hopper; 3. Motor; 4. Limiting block; 5. Cutter; 6. Connecting rod; 7. Fixing rod; 8. Push plate; 9. Counterweight; 10. Groove; 11. Transparent plate; 12. Feed inlet. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0022] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0023] A biofuel furnace for melting plastics includes a furnace body 1, a feed inlet 12 on the furnace body 1, a connecting rod 6 rotatably mounted on the feed inlet 12, a cutter 5 ringed on the connecting rod 6, a motor 3 mounted on the furnace body 1, the rotating shaft of the motor 3 being coaxially connected to the connecting rod 6, a storage hopper 2 being mounted at the end of the feed inlet 12 away from the furnace body 1, a fixing rod 7 being fixedly mounted on the inner wall of the storage hopper 2, a pusher plate 8 being rotatably mounted on the fixing rod 7, and a curved surface being provided at the bottom of the storage hopper 2, the curved surface curving toward the feed inlet 12 with the fixing rod 7 as the center.
[0024] In use, the motor 3 is started, causing the rotating shaft on the motor 3 to drive the connecting rod 6 to rotate. Pulling one end of the push plate 8 upward, the push plate 8 rotates upward along the connecting rod 6, pouring plastic into the storage hopper 2. The plastic slides along the storage hopper 2 towards the feed inlet 12. The cutter 5 cuts the plastic passing through the feed inlet 12, causing some larger plastics to be cut and crushed. The cut plastic enters the furnace body 1 as the cutter 5 rotates. After releasing the push plate 8, one end of the push plate 8 hangs down with the fixed rod 7 as the center. The hanging push plate 8 continues to push the remaining plastic towards the feed inlet 12 along the curved surface, so that the plastic in the storage hopper 2 can enter the furnace body 1 more quickly. At the same time, the push plate 8 also divides the inside and outside of the furnace body 1, reducing the temperature loss inside the furnace body 1 and increasing the melting efficiency of the furnace body 1.
[0025] Limiting blocks 4 are inserted through both sides of the connecting rod 6. The limiting blocks 4 are fixedly connected to the furnace body 1. After one end of the push plate 8 hangs down naturally, it pushes the plastic to contact the cutter 5. After being limited by the limiting blocks 4 on both sides and pushed by the push plate 8, the plastic can slide into the feed port 12 more quickly, which improves the feeding speed of the plastic. When the push plate 8 touches the limiting block 4, the push plate 8 stops pushing the plastic.
[0026] A counterweight 9 is provided at the end of the push plate 8 away from the fixed rod 7. The counterweight 9 has a groove 10, which can better apply force to the push plate 8, making the opening and closing of the push plate 8 easier and less strenuous. When the push plate 8 rotates downward, the counterweight 9 increases the weight of the push plate 8 itself, which increases the force of the push plate 8 on the plastic, so that the push plate 8 achieves a better pushing effect. A transparent plate 11 is provided on the push plate 8, allowing the user to more clearly observe the feeding of the plastic.
[0027] The implementation principle of this embodiment is as follows: When in use, start the motor 3, so that the rotating shaft on the motor 3 starts to drive the connecting rod 6 to rotate. Align your finger with the groove 10 on the counterweight 9 and pull the push plate 8 upward, so that the push plate 8 rotates upward along the connecting rod 6, pouring the plastic into the storage hopper 2. The plastic slides along the storage hopper 2 towards the feed inlet 12. The cutter 5 cuts the plastic passing through the feed inlet 12, so that some of the larger plastics are cut and crushed. The cut plastic enters the furnace body 1 as the cutter 5 rotates. After releasing the push plate 8, the counterweight 9 presses the push plate 8 downward, so that one end of the push plate 8 hangs down with the fixed rod 7 as the center. The hanging push plate 8 continues to push the remaining plastic towards the feed inlet 12 along the curved surface until the push plate 8 touches the limit block 4. The feeding situation of the plastic can then be observed through the transparent plate 11.
[0028] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A biofuel furnace for melting plastics, comprising a furnace body (1), wherein the furnace body (1) is provided with a feed inlet (12), characterized in that: A connecting rod (6) is rotatably mounted on the feed inlet (12), and a cutter (5) is circumferentially mounted on the connecting rod (6). A motor (3) is mounted on the furnace body (1), and the rotating shaft of the motor (3) is coaxially connected to the connecting rod (6). A storage hopper (2) is mounted at the end of the feed inlet (12) away from the furnace body (1). A fixing rod (7) is fixedly mounted on the inner wall of the storage hopper (2), and a push plate (8) is rotatably mounted on the fixing rod (7). A curved surface is mounted at the bottom of the storage hopper (2), and the curved surface bends toward the feed inlet (12) with the fixing rod (7) as the center.
2. The biofuel furnace for plastic melting according to claim 1, characterized in that: Limiting blocks (4) are provided on both sides of the connecting rod (6). The limiting blocks (4) are fixedly connected to the furnace body (1). When one end of the push plate (8) hangs down naturally, the push plate (8) abuts against the limiting block (4).
3. A biofuel furnace for plastic melting according to claim 1, characterized in that: The push plate (8) is provided with a counterweight (9) at the end away from the fixed rod (7), and the counterweight (9) is provided with a groove (10).
4. A biofuel furnace for plastic melting according to claim 1, characterized in that: A transparent plate (11) is provided on the push plate (8).