A plywood hot press waste heat recycling system

Abstract

The utility model provides a kind of plywood hot press waste heat recycling system, it is related to plywood hot pressing technical field, and it includes: base, base is equipped with support seat, support seat top is equipped with bottom plate, bottom plate top is equipped with top plate, and top plate top is equipped with the limiting plate of L type structure, two blocks of adhering plate are equipped in limiting plate inside, and dismounting component is equipped between adhering plate and limiting plate and bottom plate, for dismounting adhering plate and limiting plate. This kind of plywood hot press waste heat recycling system can dismount adhering plate and limiting plate by dismounting component, therefore, when glue solution leaked by plywood falls on adhering plate and limiting plate, adhering plate and limiting plate can be disassembled to clean, prevent glue solution from solidifying on adhering plate and limiting plate, and high-temperature steam in steam boiler is respectively conveyed into bottom plate and top plate by gas pipe and two gas inlet pipes, and adhering plate top and bottom are respectively heated and pressure-formed by top plate and bottom plate.

Description

Technical Field

[0001] This utility model relates to the field of plywood hot pressing technology, specifically a waste heat recovery and utilization system for a plywood hot press. Background Technology

[0002] Plywood is a type of engineered wood product made by bonding three or more layers of thin wood veneers together with adhesives and hot-pressing them. Currently, hot presses on the market cause water vapor to condense and be discharged directly after hot pressing, resulting in a waste of water resources. Furthermore, the water temperature after condensation is very high, wasting a large amount of heat energy and increasing heating costs. At the same time, the glue melts during hot pressing after bonding the wood boards, and the boards are prone to relative displacement under high pressure. This results in uneven edges, low strength, and the need for subsequent trimming, which is time-consuming and labor-intensive, leading to waste of wood.

[0003] To address the aforementioned issues, Chinese patent application CN213005757U discloses a "Hot Press Waste Heat Recovery and Utilization Device." This device, through the installation of a water tank, inlet pipe, water pump, and connecting pipe, facilitates the recovery and utilization of condensed water, improving energy efficiency, reducing heating costs, increasing steam generation speed, and enhancing the hot pressing efficiency of the plywood. However, this device still has certain drawbacks in practical use. For example, when the first and second limiting blocks are used to limit the plywood, some adhesive leaks from between multiple boards to the first and second limiting blocks during hot pressing. Since the first and second limiting blocks are mounted on top of the pressure plate and cannot be removed, it is difficult to clean the adhesive from the first and second limiting blocks. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a waste heat recovery and utilization system for a plywood hot press, which can disassemble the plywood and the limiting plate for cleaning by disassembling and assembling the components, and heat and press the top and bottom of the plywood by the top plate and the bottom plate respectively.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution: A waste heat recovery system for a plywood hot press includes: a base, a support seat mounted on the base, a bottom plate on the top of the support seat, a top plate on the top of the bottom plate, and an L-shaped limiting plate on the top of the top plate. Two bonding plates are provided on the inner side of the limiting plate. A disassembly assembly is provided between the bonding plates and the limiting plate and the bottom plate for disassembling and assembling the bonding plates and the limiting plate. The disassembly assembly includes: a slot, a plug, a movable plate, a disassembly groove, and a disassembly block.

[0006] Optionally, the bottom of the limiting plate has multiple slots, the top of the base plate has multiple inserts that are used in conjunction with the slots, the top of the base plate has two movable plates, one side of the top of the movable plates has a disassembly groove, one side of the outer end of each of the two bonding plates is connected to a disassembly block that is used in conjunction with the disassembly groove, and one side of the outer end of the base plate has two electric telescopic rods, one end of each of the two electric telescopic rods is connected to the two movable plates respectively. The disassembly assembly consisting of the slots, inserts, movable plates, disassembly grooves and disassembly blocks is used to disassemble and assemble the bonding plates and the limiting plate.

[0007] Optionally, a steam boiler is installed on one side of the top of the base, and a gas supply pipe is installed on the top of the steam boiler. Air inlet pipes are installed on the outer ends of both the base plate and the top plate, with one end of each air inlet pipe connected to the gas supply pipe. A water storage tank is provided on the top of the base, and a water pump is installed on one side of the top of the water storage tank. A water pump pipe is installed at the bottom of the water pump, extending to the inside of the water storage tank. A water supply pipe is installed on one side of the outer end of the water pump, with one end connected to the steam boiler. A water inlet pipe is installed on the top of the water storage tank. A return pipe connects the base plate and the water storage tank. A water outlet pipe is installed on one side of the outer end of the top plate, with one end connected to the return pipe. The gas supply pipe and the air inlet pipe are used to transport high-temperature steam from the steam boiler to the interior of the base plate and the top plate, respectively.

[0008] Optionally, a fixing frame is installed on the top of the support base, and a hydraulic rod is installed on the top of the fixing frame. The bottom end of the hydraulic rod is connected to the top plate. Both the bottom plate and the top plate have hollow structures inside, and support blocks are installed inside both the bottom plate and the top plate. The hydraulic rod is used to drive the top plate to rise and fall.

[0009] The beneficial effects of this utility model are: The advantage of this utility model is that the bonding plate and the limiting plate can be disassembled and assembled by disassembling and assembling the components. Therefore, when the glue leaked from the plywood falls on the bonding plate and the limiting plate, the bonding plate and the limiting plate can be disassembled for cleaning, preventing the glue from solidifying on the bonding plate and the limiting plate. Secondly, the high-temperature steam in the steam boiler is delivered to the bottom plate and the top plate through the gas supply pipe and two air inlet pipes, and the top and bottom of the plywood are heated and hot-pressed through the top plate and the bottom plate respectively. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the base plate structure of this utility model.

[0013] Figure 4 This is a schematic diagram of the bonding plate structure of this utility model.

[0014] Figure 5 This is a schematic diagram of the limiting plate structure of this utility model.

[0015] Figures 1-5 In the middle: 1-base; 101-support base; 102-bottom plate; 103-top plate; 104-limiting plate; 105-fitting plate; 2-slot; 201-insertion block; 202-movable plate; 203-disassembly slot; 204-disassembly block; 3-electric telescopic rod; 4-steam boiler; 401-gas supply pipe; 402-gas inlet pipe; 5-water storage tank; 501-water pump; 502-water pumping pipe; 503-water supply pipe; 504-water inlet pipe; 6-return pipe; 601-water outlet pipe; 7-fixed frame; 701-hydraulic rod; 702-support block. Detailed Implementation

[0016] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0017] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] like Figures 1-5 As shown, a waste heat recovery system for a plywood hot press includes: a base 1, a support seat 101 mounted on the base 1, a bottom plate 102 on the top of the support seat 101, a top plate 103 on the top of the bottom plate 102, and a limiting plate 104 with an L-shaped structure on the top of the top plate 103. Two bonding plates 105 are provided on the inner side of the limiting plate 104. A disassembly assembly is provided between the bonding plates 105 and the limiting plate 104 and the bottom plate 102 for disassembling and assembling the bonding plates 105 and the limiting plate 104. The disassembly assembly includes: a slot 2, an insert block 201, a movable plate 202, a disassembly groove 203, and a disassembly block 204.

[0019] The base 1 provides a stable bearing foundation for the entire system. The support seat 101 connects the base 1 and the base plate 102, providing vertical support for the base plate 102. The base plate 102 is used to place the plywood to be hot-pressed and also provides an installation base for the limiting plate 104 and the bonding plate 105. The top plate 103 can cooperate with the base plate 102 to form a pressing state under the push of the hydraulic rod 701. Both are hollow structures that can be connected to high-temperature steam to achieve hot pressing of the plywood. The L-shaped limiting plate 104 mainly positions the plywood on the side to prevent it from shifting. The bonding plate 105 cooperates with the limiting plate 104 and clamps the plywood under the drive of the electric telescopic rod 3. The disassembly and assembly components can realize the convenient installation and fixation of the limiting plate 104 and the bonding plate 105, and also facilitate the subsequent disassembly and cleaning of residual glue.

[0020] The bottom of the limiting plate 104 has multiple slots 2, the top of the base plate 102 has multiple inserts 201 that are used in conjunction with the slots 2, the top of the base plate 102 has two movable plates 202, one side of the top of the movable plates 202 has a disassembly groove 203, and one side of the outer end of the two bonding plates 105 is connected to a disassembly block 204 that is used in conjunction with the disassembly groove 203.

[0021] The slot 2 is used in conjunction with the insert block 201 on the top of the base plate 102 to quickly position and install the limiting plate 104. The two movable plates 202 are the carriers that drive the bonding plate 105 to move. They can be used with the electric telescopic rod 3 to achieve position adjustment. The disassembly slot 203 is used in conjunction with the disassembly block 204 on the outer end of the bonding plate 105 to fix the bonding plate 105 to one side of the movable plate 202, ensuring that the bonding plate 105 moves synchronously with the movable plate 202, which is convenient for clamping or loosening the plywood later.

[0022] Two electric telescopic rods 3 are installed on one side of the outer end of the base plate 102. One end of each electric telescopic rod 3 is connected to two movable plates 202, and the other end of each electric telescopic rod 3 is connected to two movable plates 202 on the top of the base plate 102. Therefore, the electric telescopic rods 3 can drive the corresponding movable plates 202 to move closer to or further away from the plywood through telescopic movement, thereby driving the bonding plate 105 connected to the movable plate 202 to move, so as to achieve clamping and fixing or loosening and unloading of the plywood.

[0023] A steam boiler 4 is installed on one side of the top of the base 1. A gas supply pipe 401 is installed on the top of the steam boiler 4. An air inlet pipe 402 is installed on one side of the outer end of the bottom plate 102 and the top plate 103. One end of each air inlet pipe 402 is connected to the gas supply pipe 401. The steam boiler 4 is used to generate high-temperature steam required for hot pressing. The gas supply pipe 401 is responsible for transmitting the high-temperature steam generated by the boiler. Since one end of each of the two air inlet pipes 402 on the outer end of the bottom plate 102 and the top plate 103 is connected to the gas supply pipe 401, the high-temperature steam delivered by the gas supply pipe 401 can be diverted to the interior of the bottom plate 102 and the top plate 103 respectively to provide heat for the hot pressing of the plywood. The air inlet pipe 402 is made of metal flexible hose material, so the air inlet pipe 402 will not affect the raising and lowering of the top plate 103.

[0024] The base 1 has a water storage tank 5 on top, a water pump 501 is installed on one side of the top of the water storage tank 5, a water pump pipe 502 is installed at the bottom of the water pump 501, the bottom end of the water pump pipe 502 extends into the water storage tank 5, a water delivery pipe 503 is installed on one side of the outer end of the water pump 501, one end of the water delivery pipe 503 is connected to the steam boiler 4, and a water inlet pipe 504 is installed on the top of the water storage tank 5.

[0025] The water storage tank 5 is used to store the cold water required for hot pressing. The water inlet pipe 504 can inject cold water into the tank to replenish the reserves. The pipe inlet pipe 504 is threaded with a pipe cap to seal the water inlet pipe 504. The water pumping pipe 502 can draw the cold water from the water storage tank 5 and then transport the cold water to the steam boiler 4 through the water delivery pipe 503 to provide a water source for the steam boiler 4 to generate high-temperature steam.

[0026] A return pipe 6 connects the base plate 102 and the water storage tank 5. A water outlet pipe 601 is installed on one side of the outer end of the top plate 103. One end of the water outlet pipe 601 is connected to the return pipe 6. The return pipe 6 connects the base plate 102 and the water storage tank 5 and is mainly used to receive and transport condensate. One end of the water outlet pipe 601 at the outer end of the top plate 103 is connected to the return pipe 6, which can guide the water carrying residual heat after being heated in the top plate 103 into the return pipe 6. Finally, the condensate from the base plate 102 and the top plate 103 is returned to the water storage tank 5 through the return pipe 6, which provides support for subsequent cold water preheating and reduces the energy consumption of the steam boiler 4. Moreover, the water outlet pipe 601 is made of metal flexible hose material, so the water outlet pipe 601 will not affect the raising and lowering of the top plate 103.

[0027] The support base 101 is equipped with a fixed frame 7 on top, and a hydraulic rod 701 is installed on top of the fixed frame 7. The bottom end of the hydraulic rod 701 is connected to the top plate 103. The bottom plate 102 and the top plate 103 are both hollow structures, and support blocks 702 are installed inside the bottom plate 102 and the top plate 103.

[0028] The fixed frame 7 provides an installation base for the hydraulic rod 701. The hydraulic rod 701 can drive the top plate 103 to move up and down, and cooperate with the bottom plate 102 to form the pressing state required for hot pressing. The bottom plate 102 and the top plate 103 are both hollow structures, which are used to introduce high-temperature steam to achieve hot pressing of plywood. The support blocks 702 installed inside both can prevent the bottom plate 102 and the top plate 103 from deforming due to pressure during hot pressing.

[0029] A control panel is installed on one side of the outer end of the mounting frame 7. The control panel is used to control the start, stop, and use of the electric telescopic rod 3, steam boiler 4, water pump 501, and hydraulic rod 701. It should be noted that the control panel, electric telescopic rod 3, steam boiler 4, water pump 501, and hydraulic rod 701 in this application all adopt existing mature structures. This application does not improve the construction or working principle of these structures, but only integrates them as functional components into the device to realize the overall process of plywood hot pressing. Therefore, this application will not elaborate on the detailed operation methods and internal operating mechanisms of these existing structures, and the control panel, electric telescopic rod 3, steam boiler 4, water pump 501, and hydraulic rod 701 are all powered by an external power source.

[0030] First, the L-shaped limiting plate 104 is placed on top of the base plate 102, so that the multiple slots 2 at the bottom of the limiting plate 104 are precisely aligned with the insert block 201 at the top of the base plate to complete the positioning and installation. Then, the disassembly block 204 on one side of the bonding plate 105 is fully inserted into the disassembly groove 203 at the top of the movable plate 202, thereby installing the bonding plate 105 on one side of the movable plate 202. Next, the plywood to be hot-pressed is placed on top of the base plate 102, and one side of the plywood is attached to the inner side of the limiting plate 104. Then, the movable plate 202 and the bonding plate 105 are driven to move towards the plywood by the electric telescopic rod 3 until the inner sides of the two bonding plates 105 are attached to the plywood respectively, thereby fixing the plywood on top of the base plate 102. Next, the hydraulic rod 701 on the top fixing frame 7 of the support base 101 is activated. The hydraulic rod extends and pushes the top plate 103 to move slowly downward until the bottom of the top plate is completely in contact with the top of the plywood blank, forming a stable pressing state. Then, sufficient cold water is injected into the water storage tank 5 through the water inlet pipe 504 to complete the initial water supply reserve. Then, the water pump 501 is activated to draw cold water from the water storage tank 5 through the water pumping pipe 502 and deliver it to the steam boiler 4 through the water delivery pipe 503. Subsequently, the steam boiler 4 is activated to heat the input cold water to a vaporized state, generating high-temperature steam required for thermal pressure. Then, the high-temperature steam is distributed to the hollow bottom plate 102 and top plate 103 through the air delivery pipe 401 and the air inlet pipe 402. Inside, since both the bottom plate 102 and the top plate 103 are made of aluminum alloy, which has high thermal conductivity, the heat of the high-temperature steam can be conducted to the plywood for hot pressing. During the hot pressing process, the steam inside the bottom plate 102 and the top plate 103 gradually condenses into water. The condensate carrying residual heat flows back through two paths. The outlet pipe 601 guides the condensate in the top plate 103 into the return pipe 6, and the bottom plate 102 directly discharges the internal condensate through the return pipe 6. Finally, the two water streams are transported back to the water storage tank 5. The hot water returning preheats the cold water in the water storage tank 5. The water pumped by the pump 501 to the steam boiler 4 has already reached the basic temperature, reducing the heating energy consumption of the steam boiler 4. After the plywood is hot-pressed, the steam boiler 4 is turned off. After the plywood cools to the set temperature, the hydraulic rod 701 is shortened, which drives the top plate 103 to reset upward and detach from the finished plywood product. Then the electric telescopic rod 3 is shortened, which pulls the movable plate 202 to move away from the adhesive plate 105. Then the finished plywood product is removed from the top of the bottom plate 102. During hot pressing of plywood, some adhesive may leak from the multi-layer boards to the bonding plate 105 and the limiting plate 104. To prevent the adhesive from solidifying at the bonding plate 105 and the limiting plate 104, the bonding plate 105 and the limiting plate 104 can be moved upwards, so that the disassembly block 204 and the insertion block 201 can be slid out from the disassembly groove 203 and the slot 2, respectively, thereby disassembling the bonding plate 105 and the limiting plate 104 and facilitating the cleaning of the adhesive on the bonding plate 105 and the limiting plate 104.

[0031] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0032] The above provides a detailed description of a waste heat recovery system for a plywood hot press provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A waste heat recovery and utilization system for a plywood hot press, characterized in that, include: The base (1) is equipped with a support seat (101), the support seat (101) is provided with a bottom plate (102) on the top, the bottom plate (102) is provided with a top plate (103) on the top, and the top plate (103) is provided with a limiting plate (104) in an L-shaped structure on the top, and two bonding plates (105) are provided on the inner side of the limiting plate (104). A disassembly assembly is provided between the bonding plate (105) and the limiting plate (104) and the base plate (102) for disassembling and assembling the bonding plate (105) and the limiting plate (104). The disassembly assembly includes: a slot (2), a plug (201), a movable plate (202), a disassembly groove (203), and a disassembly block (204).

2. The waste heat recovery system for plywood hot presses according to claim 1, characterized in that, The bottom of the limiting plate (104) is provided with multiple slots (2), and the top of the base plate (102) is provided with multiple inserts (201) that are used in conjunction with the slots (2). The top of the base plate (102) is provided with two movable plates (202). The top side of the movable plate (202) is provided with a disassembly groove (203). The outer side of the two bonding plates (105) is connected with a disassembly block (204) that is used in conjunction with the disassembly groove (203).

3. The waste heat recovery system for plywood hot presses according to claim 2, characterized in that, Two electric telescopic rods (3) are installed on one side of the outer end of the base plate (102), and one end of each of the two electric telescopic rods (3) is connected to one of the two movable plates (202).

4. The waste heat recovery system for plywood hot presses according to claim 1, characterized in that, A steam boiler (4) is installed on one side of the top of the base (1), and a gas supply pipe (401) is installed on the top of the steam boiler (4). An air inlet pipe (402) is installed on one side of the outer end of the bottom plate (102) and the top plate (103). One end of each of the two air inlet pipes (402) is connected to the gas supply pipe (401).

5. The waste heat recovery system for plywood hot presses according to claim 4, characterized in that, The base (1) is provided with a water storage tank (5) on the top. A water pump (501) is installed on one side of the top of the water storage tank (5). A water pump (502) is installed at the bottom of the water pump (501). The bottom end of the water pump (502) extends into the water storage tank (5). A water delivery pipe (503) is installed on one side of the outer end of the water pump (501). One end of the water delivery pipe (503) is connected to the steam boiler (4). A water inlet pipe (504) is installed on the top of the water storage tank (5).

6. The waste heat recovery system for plywood hot presses according to claim 5, characterized in that, A return pipe (6) is connected between the bottom plate (102) and the water storage tank (5). A water outlet pipe (601) is installed on one side of the outer end of the top plate (103), and one end of the water outlet pipe (601) is connected to the return pipe (6).

7. The waste heat recovery system for plywood hot presses according to claim 1, characterized in that, The support base (101) is equipped with a fixing frame (7) on top, and a hydraulic rod (701) is installed on top of the fixing frame (7). The bottom end of the hydraulic rod (701) is connected to the top plate (103). The bottom plate (102) and the top plate (103) are both hollow structures, and support blocks (702) are installed inside the bottom plate (102) and the top plate (103).

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