Double-layer drying system

Abstract

The utility model discloses a double-layer drying system, relates to the technical field of drying equipment, and solves the problem of insufficient space utilization rate of the drying equipment in the prior art. Comprising a support, an upper-layer plate chain and a lower-layer plate chain are arranged on the support in parallel, one end of the support is connected with an elevator, the support and the elevator are covered with heat preservation layers, and the other end of the support is provided with an upper-layer outlet and a lower-layer inlet corresponding to the upper-layer plate chain and the lower-layer plate chain respectively. And the upper-layer plate chain and the lower-layer plate chain are matched with the drying unit. The upper-layer plate chain and the lower-layer plate chain are matched with the hoister to form a double-layer rotary conveying and drying structure, the drying space can be fully utilized, the overall occupied space of the drying system is reduced, and the space utilization rate is increased; the upper-layer plate chain and the lower-layer plate chain are matched with the drying unit, a large number of workpieces can be treated at the same time through the double-layer plate chain design, the drying speed is increased, and the production efficiency is improved. The heat preservation layer can prevent heat loss, so that heat energy can be efficiently utilized, energy waste is reduced, drying efficiency is improved, and production cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a double-layer drying system. Background Technology

[0002] Drying is a common process in industrial production. Traditional drying equipment suffers from several problems, primarily low efficiency. Previous drying equipment often employed a single-layer plate chain design, limiting the amount of material processed at a time and resulting in long overall drying times, failing to meet the demands of large-scale production. Regarding energy consumption, the lack of effective insulation leads to significant heat loss. Traditional paint spraying production lines generally suffer from severe energy waste. In today's increasingly energy-constrained environment, this high-energy-consuming drying method negatively impacts the sustainable development of enterprises. For example, some drying equipment has low thermal efficiency, resulting in the unnecessary waste of large amounts of heat energy, increasing production costs, and contradicting the modern industrial trend of energy conservation and emission reduction. Furthermore, the utilization of production space is often inefficient. Many production lines are not designed with space considerations in mind, resulting in large floor areas without a corresponding increase in production efficiency, a problem particularly pronounced in space-constrained production environments.

[0003] For example, Chinese invention patent CN105642475A discloses a wheel hub cleaning and painting combined production line, which includes independent cleaning lines and painting lines. The cleaning lines and painting lines partially overlap, staggered vertically at the overlap, and share a drying oven outside the overlap. Compared with existing painting production lines, this invention saves a drying oven, reduces procurement costs, lowers production costs, reduces heat loss, and saves energy. At the same time, this invention occupies a smaller area, saving land resources in today's increasingly scarce land resources.

[0004] This invention enables the washing line and the painting line to share a single drying oven, which improves the overall space utilization of multiple production lines to a certain extent. However, for a single painting line, it does not achieve the goal of reducing space occupation. For a single production line, the space utilization of the drying equipment is low, which also reduces the heat utilization efficiency. Utility Model Content

[0005] To address the shortcomings in the aforementioned background technology, this utility model proposes a double-layer drying system, which solves the problem of insufficient space utilization in existing drying equipment.

[0006] A double-layer drying system includes a support frame with an upper plate chain and a lower plate chain arranged in parallel on the support frame. One end of the support frame is connected to a hoist. The support frame and the hoist are covered with an insulation layer. The other end of the support frame has an upper outlet and a lower inlet, which correspond to the upper plate chain and the lower plate chain, respectively. The upper plate chain and the lower plate chain cooperate with a drying unit.

[0007] Preferably, the hoist includes a frame, on which an upper support structure and a lower support structure are provided, corresponding to an upper plate chain and a lower plate chain, respectively; a hoisting frame is provided on the frame, and the hoisting frame is connected to a hoisting cylinder provided on the frame, the hoisting cylinder being able to drive the hoisting frame to move vertically.

[0008] Preferably, the bottom of the frame is provided with a linear assembly, the moving end of the linear assembly is provided with a moving cylinder, the moving cylinder is vertically arranged and the telescopic end is provided with a support plate.

[0009] Preferably, the frame is provided with a push cylinder, the push cylinder is horizontally set, and the insulation layer is provided with an opening to accommodate the push cylinder.

[0010] Preferably, the upper supporting structure includes several rollers mounted on the frame, each roller having a sprocket I at its end, and adjacent sprockets I being connected by chain drive.

[0011] Preferably, the lower supporting structure includes a pair of half-shafts I arranged on both sides of the frame, each half-shaft I having a sprocket II at its end, and adjacent sprockets II being connected by chain drive.

[0012] Preferably, the lifting frame is a U-shaped frame, and the opening of the lifting frame is symmetrically provided with half-shafts II; there is a gap between the half-shafts I and II on both sides of the frame, and the gap is used to allow the pallet to move.

[0013] Preferably, the frame is equipped with sensors. Both the upper and lower plate chains are plate chain conveyor belts. The drying unit includes a hot air blower or heating wires.

[0014] The beneficial effects of this invention are as follows: The upper and lower plate chains, in conjunction with the elevator, form a double-layer rotary conveyor drying structure, which fully utilizes the drying space, reduces the overall space occupied by the drying system, and improves space utilization. The double-layer plate chain design, working in conjunction with the drying unit, allows for the simultaneous processing of a large number of workpieces, accelerating the drying speed and improving production efficiency. The insulation layer prevents heat loss, thereby enabling efficient utilization of thermal energy, reducing energy waste, improving drying efficiency, and saving production costs. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model, the 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 1This is a schematic diagram of the double-layer drying system of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the elevator and the workpiece of this utility model;

[0018] Figure 3 This is a schematic diagram of the hoist structure of this utility model;

[0019] In the diagram: 1: Support frame, 2: Upper plate chain, 3: Lower plate chain, 4: Hoist, 5: Insulation layer, 41: Frame, 42: Upper supporting structure, 43: Lower supporting structure, 44: Hoisting frame, 45: Hoisting cylinder, 46: Linear assembly, 47: Moving cylinder, 48: Pallet, 49: Pushing cylinder, 421: Roller, 422: Sprocket I, 431: Half shaft I, 432: Sprocket II, 441: Half shaft II, 411: Sensor. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 As shown in Embodiment 1, a double-layer drying system includes a support frame 1. The support frame 1 is characterized by having an upper plate chain 2 and a lower plate chain 3 arranged parallel to each other, with the upper and lower plate chains corresponding vertically. One end of the support frame 1 is connected to a hoist 4, and the other end of the support frame 1 has an upper outlet and a lower inlet corresponding to the upper plate chain 2 and the lower plate chain 3, respectively. In this embodiment, the upper plate chain 2 and the lower plate chain 3, in conjunction with the hoist, form a double-layer rotary conveying drying structure, enabling rotary conveying in three-dimensional space, fully utilizing the drying space, reducing the overall space occupied by the drying system, and improving space utilization. The support frame 1 and the hoist 4 are covered with an insulation layer 5, which prevents heat loss, thereby efficiently utilizing thermal energy, reducing energy waste, improving drying efficiency, and saving production costs. The upper plate chain 2 and the lower plate chain 3 cooperate with the drying unit. The double-layer plate chain design allows for the simultaneous processing of a large number of workpieces, improving space utilization, accelerating drying speed, and increasing production efficiency.

[0022] In this embodiment, the workpiece is fed into the lower plate chain through the lower inlet. The drying unit starts working to dry the workpiece carried on the lower plate chain. The workpiece is then conveyed to the elevator at the other end. The elevator lifts the workpiece from the lower layer to the upper layer and transfers it to the upper plate chain. The upper plate chain continues to convey the workpiece, while the drying unit continues to dry the workpiece. Finally, the workpiece is output from the upper outlet. With the help of the heat insulation layer, the temperature dissipates slowly, which can continuously dry the surface coating of the workpiece located on the upper plate chain, the lower plate chain, and the elevator.

[0023] Specifically, in this embodiment, both the upper plate chain 2 and the lower plate chain 3 are plate chain conveyor belts. Using plate chain conveyor belts to transport workpieces reduces the adhesion problem between the painted workpiece and the plate chain. The small contact area between the plate chain conveyor belt and the workpiece allows for better drying of the painted workpiece in the drying system. Simultaneously, the plate chain conveyor belt facilitates hot air circulation between the upper and lower layers, ensuring unobstructed airflow. Furthermore, the plate chain conveyor belt has a robust structure, making it less prone to deformation due to external vibration or impact, thus providing better stability during transportation. Additionally, the chain and plates of the plate chain conveyor belt can be replaced individually, simplifying maintenance and reducing costs. The plate chain conveyor belt also provides a stable conveying surface, reducing the risk of material jamming during transport and preventing workpieces from contacting each other. As an optional implementation, conventional tensioners are provided on the plate chain conveyor belt to tension the plate chains, preventing them from loosening due to prolonged wear and tear, and preventing slow movement of workpieces in the double-layer drying system due to insufficient tension.

[0024] As a further specific implementation, the drying unit can be selected as a hot air blower or a heating wire. When using a hot air blower, in this embodiment, the hot air blower is set on a support or on the ground. The hot air blower is connected to the inner space of the insulation layer through a pipe, so that it can generate hot air when it is working and introduce the hot air into the double-layer drying system. A temperature sensor is set on the internal support. Both the temperature sensor and the hot air blower are connected to a controller. When the temperature sensor detects that the temperature signal has reached the set value, it feeds back to the controller. The controller controls the hot air blower to stop working, thereby monitoring the operating status of the system, maintaining the temperature range, and avoiding energy waste. Furthermore, the air outlet of the hot air blower is connected to the bottom of the support through a pipe, and the air inlet of the hot air blower is connected to the top of the support through a pipe. This fully utilizes the principle of heat rising, making the temperature inside the double-layer drying system 4 more uniform, reducing heat loss, and saving energy. When using a heating wire, the heating wire is fixed on the support of the internal space enclosed by the insulation layer. The heating wire heats the air and uses the hot air to dry the coating on the surface of the workpiece. Alternatively, a circulating fan can be installed in the internal space enclosed by the insulation layer to promote air circulation and improve drying efficiency.

[0025] In addition, in this embodiment, hooks are provided on the insulation layer. After damage to components such as the conveyor belt plates and bearings, the insulation layer can be easily removed by lifting using the hooks for maintenance, improving maintenance efficiency and reducing downtime. In this embodiment, the double-layer design achieves more efficient heating without increasing the production line's floor space, while also utilizing heat energy more efficiently and reducing energy waste. Furthermore, the double-layer heating method provides uniform heat, accelerating the drying of the workpiece surface coating, improving production efficiency, saving space, and extending drying time in space-constrained environments to improve paint drying.

[0026] Example 2, a double-layer drying system, based on Example 1, such as... Figure 2 , 3 As shown, the hoist 4 includes a frame 41, on which an upper receiving structure 42 and a lower receiving structure 43 are provided, corresponding to the upper plate chain 2 and the lower plate chain 3, respectively. This allows the lower receiving structure to receive workpieces transported from the lower plate chain, and the upper receiving structure to return the workpieces to the upper plate chain. A lifting frame 44 is provided on the frame 41, and the lifting frame 44 is connected to a lifting cylinder 45 mounted on the frame 41. The lifting cylinder 45 can drive the lifting frame 44 to move vertically.

[0027] As a further specific embodiment, the lower supporting structure 43 includes a pair of half-shafts I 431 arranged on both sides of the frame 41. The half-shafts I 431 can provide a movable support base by rotation. Each half-shaft I 431 is provided with a sprocket II 432 at its end, and adjacent sprockets II 432 are connected by chain drive. The sprockets II can be optionally connected to a driver fixed on the frame by a chain, or can be optionally connected to a conveyor belt driver of the lower plate chain by a chain drive to achieve synchronous transmission.

[0028] In addition, the lifting frame 44 is a U-shaped frame, and half-shafts II 441 are symmetrically arranged at the opening of the lifting frame 44. Gaps are left between the opposing half-shafts I 431 and II 441 on both sides of the frame 41, and these gaps are used to allow the pallet 48 to move. In use, the pallet moves within these gaps to move the workpiece between the lower supporting structure and the lifting frame.

[0029] As a further specific embodiment, the frame 41 is provided with a linear assembly 46 at its bottom, and a moving cylinder 47 is provided at the moving end of the linear assembly 46. The moving cylinder 47 is vertically arranged and has a support plate 48 at its telescopic end. The linear assembly can be a conventional motor screw assembly, which can realize linear movement drive.

[0030] Furthermore, a push cylinder 49 is provided on the frame 41. The push cylinder 49 is horizontally arranged, and the insulation layer 5 is provided with an opening to accommodate the push cylinder 49. Using the push cylinder, the workpiece can be lifted by the lifting frame and pushed onto the upper plate chain.

[0031] Example 3, a double-layer drying system, based on Example 2, wherein the upper supporting structure 42 includes several rollers 421 mounted on a frame 41. The rollers 421 provide a movable support base through rotation. Each roller 421 has a sprocket I 422 at its end, and adjacent sprockets I 422 are connected via chain drive. The sprocket I can be optionally connected to a driver fixed to the frame via a chain, or optionally connected to a conveyor belt driver of the upper plate chain via a chain drive, to achieve synchronous transmission.

[0032] Additionally, a sensor 411 is provided on the frame 41. The sensor may be a photoelectric sensor. After the workpiece moves into position, the photoelectric sensor is triggered, thereby monitoring the workpiece's position in real time and determining the system's operating status. Specifically, in this embodiment, a sensor is provided on the frame at the location of the lower supporting structure. When the workpiece is conveyed to the half-shaft I by the lower plate chain, the photoelectric sensor is triggered, causing both the lower plate chain and the half-shaft I to stop rotating simultaneously.

[0033] In operation, after the workpiece is conveyed by the lower plate chain to the half-shaft I of the lower receiving structure, the moving cylinder is in a retracted state. The linear assembly drives the moving cylinder and the pallet to move to the gap between the two half-shafts I. The moving cylinder extends, pushing the pallet upward and lifting the workpiece. Then, the linear assembly moves, moving the workpiece to the position corresponding to half-shaft II. The moving cylinder retracts, lowering the pallet and moving the workpiece onto half-shaft II. Subsequently, the lifting cylinder retracts, raising the lifting frame until half-shaft II aligns with the roller of the upper receiving structure. Then, the cylinder extends, pushing the extension end of the cylinder to move the workpiece onto the roller. The sprocket I on the roller, driven by the chain, moves the workpiece onto the upper plate chain, thus achieving the lifting and displacement of the workpiece. The upper plate chain then continues to convey the workpiece back and forth for further drying. In this embodiment, the elevator can quickly and continuously transfer products from the lower layer to the upper layer, reducing waiting and handling time and thus improving overall production efficiency. At the same time, the hot air generated by the drying unit can dry the workpiece on both sides before and after the folding process, improving the heat energy utilization rate and the overall space utilization rate of the drying system.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-layer drying system, comprising a support frame (1), characterized in that: The support (1) is provided with an upper plate chain (2) and a lower plate chain (3) in parallel. One end of the support (1) is connected to the elevator (4). The support (1) and the elevator (4) are covered with a heat insulation layer (5). The other end of the support (1) is provided with an upper outlet and a lower inlet corresponding to the upper plate chain (2) and the lower plate chain (3), respectively. The upper plate chain (2) and the lower plate chain (3) are used in conjunction with the drying unit.

2. The double-layer drying system according to claim 1, characterized in that: The hoist (4) includes a frame (41), on which an upper support structure (42) and a lower support structure (43) are provided, which are respectively corresponding to the upper plate chain (2) and the lower plate chain (3); a lifting frame (44) is provided on the frame (41), and the lifting frame (44) is connected to a lifting cylinder (45) provided on the frame (41). The lifting cylinder (45) can drive the lifting frame (44) to move vertically.

3. The double-layer drying system according to claim 2, characterized in that: The frame (41) has a linear assembly (46) at its bottom. The moving end of the linear assembly (46) is provided with a moving cylinder (47). The moving cylinder (47) is vertically arranged and has a support plate (48) at its telescopic end.

4. The double-layer drying system according to claim 3, characterized in that: The frame (41) is provided with a push cylinder (49), which is horizontally arranged, and the insulation layer (5) is provided with an opening to accommodate the arrangement of the push cylinder (49).

5. The double-layer drying system according to claim 4, characterized in that: The upper support structure (42) includes several rollers (421) on the frame (41), and each roller (421) is provided with a sprocket I (422) at its end. Adjacent sprockets I (422) are connected by chain drive.

6. The double-layer drying system according to claim 5, characterized in that: The lower supporting structure (43) includes a pair of half shafts I (431) arranged on both sides of the frame (41). Each half shaft I (431) is provided with a sprocket II (432) at its end. The adjacent sprockets II (432) are connected by chain drive.

7. The double-layer drying system according to claim 6, characterized in that: The lifting frame (44) is a U-shaped frame, and half-shafts II (441) are symmetrically provided at the opening of the lifting frame (44); there is a gap between the half-shafts I (431) and II (441) on both sides of the frame (41), and the gap is used to allow the pallet (48) to move.

8. The double-layer drying system according to claim 7, characterized in that: The frame (41) is equipped with a sensor (411).

9. The double-layer drying system according to any one of claims 1 to 8, characterized in that: Both the upper plate chain (2) and the lower plate chain (3) are plate chain conveyor belts.

10. The double-layer drying system according to claim 9, characterized in that: The drying unit includes a hot air blower or heating wire.

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