Freezing type drying machine for surface treatment of writing board
By introducing a movable frame and linkage structure into the refrigerated dryer, the problem of operators frequently entering the low-temperature environment is solved, achieving safe and efficient material loading and unloading and stable drying effect, while reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINJIANG HONGSHUN CHILDRENS PROD CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-26
AI Technical Summary
Existing refrigerated dryers require operators to enter the low-temperature environment multiple times during material loading and unloading, resulting in a high risk of frostbite and temperature fluctuations affecting drying effect and efficiency, while increasing energy consumption.
A refrigerated dryer comprising an outer shell, a refrigerant evaporator, a sealing plate, a movable frame, and a pulling assembly was designed. The movable frame is pulled out and pushed in externally through a linkage structure, reducing the number of times manual personnel enter the refrigeration chamber and avoiding temperature fluctuations.
It improves the safety of material loading and unloading and drying efficiency, reduces equipment energy consumption, and ensures the stability of drying effect.
Smart Images
Figure CN224285136U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drying technology, and in particular to a freeze dryer for surface treatment of writing boards. Background Technology
[0002] In the field of writing board surface treatment, refrigerated dryers are key equipment, mainly used to condense and dry the moisture on the surface of writing boards through a low-temperature environment to ensure the quality stability of coating, printing and other processing processes. With the increasing demand for automated production, higher requirements are placed on the convenience of material loading and unloading and the accuracy of temperature control of drying equipment. The limitations of traditional dryers in structural design are gradually becoming apparent, and there is an urgent need to optimize the mechanical structure to achieve a dual improvement in operating efficiency and drying effect.
[0003] Existing refrigerated dryers typically employ a fixed chamber structure. Their mechanical structure mainly includes a sealed outer shell, a built-in refrigeration evaporator, and a tray rack for placing materials. The technical principle is to create a low-temperature environment in the evaporator through refrigerant circulation, and then transfer the cold energy to the drying chamber through pipe cooling components, causing the moisture on the surface of the materials to condense and be discharged. Loading and unloading materials requires operators to open the chamber door and directly reach into the chamber to place or remove the trays one by one. This operation method relies on frequent manual contact with the low-temperature environment, and the chamber door must be kept sealed during equipment operation to maintain a stable low temperature.
[0004] However, existing equipment has some problems in the material loading and unloading process. Operators need to reach into the freezer compartment multiple times to pick up and put in materials one by one. This not only exposes them to the low temperature environment, which can easily lead to frostbite and other safety hazards, but also frequently opening the compartment door will disrupt the temperature balance of the freezer compartment, causing drastic temperature fluctuations. These temperature fluctuations not only prolong the drying cycle and reduce production efficiency, but also affect the drying effect of the writing board surface treatment due to unstable temperature, thereby increasing the energy consumption cost of the equipment. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a freeze dryer for writing board surface treatment, which aims to improve the problem that in the material loading and unloading process of existing freeze dryers, operators need to repeatedly reach into the freeze chamber to pick up and put in materials one by one, which leads to a reduction in drying effect.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a refrigerated dryer for writing board surface treatment, comprising a shell, a refrigerant evaporator fixedly connected to the upper surface of the shell, a connecting pipe fixedly connected inside the refrigerant evaporator, a pipe cooling assembly fixedly connected inside the shell, a sealing plate rotatably connected inside the shell, a movable frame disposed inside the shell, a placement plate slidably connected to the inner wall of the movable frame, a pulling assembly disposed on one side of the outer wall of the sealing plate, the pulling assembly being used to pull the movable frame out from inside the shell, a sliding assembly disposed on the lower surface of the movable frame, the sliding assembly being used to assist the movement of the movable frame, the pulling assembly including a connecting auxiliary, one side of the outer wall of the connecting auxiliary being rotatably connected to one side of the outer wall of the sealing plate, a connecting rod rotatably connected inside the connecting auxiliary, a sliding rod slidably connected inside the connecting rod, a hinge block rotatably connected inside the sliding rod, and one side of the outer wall of the hinge block being fixedly connected to one side of the outer wall of the movable frame.
[0007] Furthermore, the sliding assembly includes a slide bar, the upper surface of which is fixedly connected to the lower surface of the movable frame, and a sliding groove is provided inside the housing, with the outer wall of the slide bar slidably connected to the inner wall of the sliding groove.
[0008] Furthermore, a fixing box is fixedly connected inside the placement plate, and a slot is opened inside the movable frame.
[0009] Furthermore, a locking block is slidably connected inside the fixing box, and a round rod is fixedly connected to one side of the outer wall of the locking block.
[0010] Furthermore, a locking block is slidably connected inside the fixing box, and a round rod is fixedly connected to one side of the outer wall of the locking block.
[0011] Furthermore, a lever block is fixedly connected to the outer wall of the connecting disc, and the lever block is used to pull the locking block.
[0012] Furthermore, a limiting groove is formed inside the connecting rod, and a limiting block is fixedly connected to the upper surface of the slide rod.
[0013] Furthermore, a control panel is fixedly connected to one side of the outer wall of the housing.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, by pulling the sealing plate, the connecting auxiliary device can be moved. At this time, through the sliding cooperation of the sliding rod and the connecting rod, as well as the linkage structure composed of the hinge block and the connecting auxiliary device, the entire moving frame can be moved outward synchronously. This allows the operator to avoid repeatedly reaching into the freezer to pick up and put in materials one by one. By simply pulling the moving frame once, all the materials on the placement plates can be loaded and unloaded outside the outer shell, greatly reducing the impact of the low temperature environment on the operator. At the same time, it can avoid the temperature fluctuation of the freezer caused by frequent door opening, effectively improving the drying efficiency.
[0016] 2. In this utility model, by pushing the lever block, the round rod can be moved, and the locking block will come out of the slot inside the moving frame. At the same time, the spring will be squeezed and contracted until the locking block is disengaged from the slot, thus realizing convenient disassembly and cleaning of the placement plate. After cleaning, the placement plate can be re-fixed through simple operation to ensure that the equipment is always in a hygienic state and effectively extend the service life of the equipment. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of a freeze dryer for surface treatment of writing boards proposed in this utility model;
[0018] Figure 2 This is a schematic diagram of the outer shell of a freeze dryer for surface treatment of writing boards proposed in this utility model.
[0019] Figure 3 This is a schematic diagram of the slide bar structure of a freeze dryer for writing board surface treatment proposed in this utility model;
[0020] Figure 4 This is a schematic diagram of the refrigerant evaporator part of a freeze dryer for writing board surface treatment proposed in this utility model.
[0021] Figure 5 This is a schematic diagram of the placement plate portion of a freeze dryer for writing board surface treatment proposed in this utility model;
[0022] Figure 6 This is a schematic diagram of the card block structure of a freeze dryer for surface treatment of writing boards proposed in this utility model.
[0023] Legend:
[0024] 1. Outer shell; 2. Refrigerant evaporator; 3. Connecting pipe; 4. Sealing plate; 5. Moving frame; 6. Connecting auxiliary device; 7. Connecting rod; 8. Slide rod; 9. Hinge block; 10. Limiting groove; 11. Limiting block; 12. Pipe cooling assembly; 13. Slide groove; 14. Slide bar; 15. Placement plate; 16. Fixing box; 17. Slot; 18. Locking block; 19. Round rod; 20. Spring; 21. Connecting plate; 22. Actuating block; 23. Control panel. Detailed Implementation
[0025] 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.
[0026] Reference Figure 1 - Figure 4 This utility model provides an embodiment of a freeze dryer for surface treatment of writing boards, comprising a shell 1, a refrigerant evaporator 2 fixedly connected to the upper surface of the shell 1, a connecting pipe 3 fixedly connected inside the refrigerant evaporator 2, a pipe cooling assembly 12 fixedly connected inside the shell 1, a control panel 23 fixedly connected to one side of the outer wall of the shell 1, a sealing plate 4 rotatably connected inside the shell 1, a movable frame 5 disposed inside the shell 1, a placement plate 15 slidably connected to the inner wall of the movable frame 5, a pulling assembly disposed on one side of the outer wall of the sealing plate 4 for pulling the movable frame 5 out of the shell 1, and a sliding assembly disposed on the lower surface of the movable frame 5. The components are used to assist the movement of the movable frame 5. The pulling component includes a connecting auxiliary device 6, one side of the outer wall of the connecting auxiliary device 6 is rotatably connected to one side of the outer wall of the sealing plate 4, a connecting rod 7 is rotatably connected inside the connecting auxiliary device 6, a slide rod 8 is slidably connected inside the connecting rod 7, a hinge block 9 is rotatably connected inside the slide rod 8, one side of the outer wall of the hinge block 9 is fixedly connected to one side of the outer wall of the movable frame 5, a limit groove 10 is opened inside the connecting rod 7, a limit block 11 is fixedly connected to the upper surface of the slide rod 8, and the sliding component includes a slide bar 14, the upper surface of the slide bar 14 is fixedly connected to the lower surface of the movable frame 5, a slide groove 13 is opened inside the outer shell 1, and the outer wall of the slide bar 14 is slidably connected to the inner wall of the slide groove 13.
[0027] Specifically, a refrigerated dryer for writing board surface treatment includes a housing 1. A refrigerant evaporator 2 is fixedly connected to the upper surface of the housing 1. The refrigerant evaporator 2 provides the refrigerant required for cooling, and the internal temperature of the dryer is reduced by absorbing heat through the evaporation of the refrigerant. A connecting pipe 3 is fixedly connected inside the refrigerant evaporator 2, which connects the refrigerant evaporator 2 to a pipe cooling assembly 12 inside the housing 1, forming a refrigerant circulation channel. This allows the refrigerant to circulate within the dryer, continuously providing cooling. The pipe cooling assembly 12 is fixedly connected inside the housing 1, and the pipe cooling assembly 12 is circulated by the flow of refrigerant. The outer shell 1 absorbs heat from its interior, thus lowering the temperature inside the dryer and providing a low-temperature environment for the surface treatment of the writing boards. A sealing plate 4 is rotatably connected inside the outer shell 1 to seal it, preventing external influences on the low-temperature environment inside the dryer. It can also be rotated open for loading and unloading materials. A movable frame 5 is installed inside the outer shell 1 to hold the writing boards. Operators can use the movable frame 5 to feed or remove the writing boards into or from the dryer. A placement plate 15 is slidably connected to the inner wall of the movable frame 5 to hold the writing boards. This sliding connection facilitates easy movement by the operator. The frame 5 has a loading and unloading placement plate 15. A pulling assembly is provided on one side of the outer wall of the sealing plate 4. The pulling assembly is used to pull the movable frame 5 out of the housing 1. The operator can easily pull the movable frame 5 out of the housing 1 by pulling the assembly, which facilitates loading and unloading materials. A sliding assembly is provided on the lower surface of the movable frame 5. The sliding assembly is used to assist the movement of the movable frame 5, making the movement of the movable frame 5 inside the housing 1 smoother. The pulling assembly includes a connecting auxiliary device 6. One side of the outer wall of the connecting auxiliary device 6 is rotatably connected to one side of the outer wall of the sealing plate 4. The connecting auxiliary device 6 is used to connect the sealing plate 4 and the connecting rod 7, so that the rotation of the sealing plate 4 can be achieved. The connecting rod 7 is rotated inside the connecting auxiliary device 6. The connecting rod 7 is used to transmit the movement of the connecting auxiliary device 6 and convert the rotation of the sealing plate 4 into linear motion. The connecting rod 7 is slidably connected to the slide rod 8 inside the connecting rod 7. The slide rod 8 can slide inside the connecting rod 7 to adapt to the distance change during the movement of the moving frame 5. The slide rod 8 is rotatedly connected to the hinge block 9 inside the slide rod 8. The hinge block 9 is used to connect the slide rod 8 and the moving frame 5 so that the movement of the slide rod 8 can drive the moving frame 5 to move. One side of the outer wall of the hinge block 9 is fixedly connected to one side of the outer wall of the moving frame 5 to realize the fixed connection between the pulling component and the moving frame 5.
[0028] Reference Figure 5 - Figure 6 A fixed box 16 is fixedly connected inside the placement plate 15. A slot 17 is opened inside the movable frame 5. A locking block 18 is slidably connected inside the fixed box 16. A round rod 19 is fixedly connected to one side of the outer wall of the locking block 18. A lever block 22 is fixedly connected to the outer wall of the connecting plate 21. The lever block 22 is used to pull the locking block 18.
[0029] Specifically, the sliding assembly includes a slider 14, the upper surface of which is fixedly connected to the lower surface of the movable frame 5. The slider 14 is used to cooperate with the sliding groove 13 inside the outer shell 1 to assist the movement of the movable frame 5. The sliding groove 13 is provided inside the outer shell 1, providing a sliding track for the slider 14, making the movement of the movable frame 5 more stable. The outer wall of the slider 14 is slidably connected to the inner wall of the sliding groove 13. By sliding the slider 14 in the sliding groove 13, the movable frame 5 can move smoothly inside the outer shell 1. A fixing box 16 is fixedly connected inside the placement plate 15. The fixing box 16 is used to accommodate components such as the locking block 18. A locking slot 17 is provided inside the movable frame 5. The locking slot 17 cooperates with the locking block 18 to fix the position of the placement plate 15 on the movable frame 5. The locking block 18 is slidably connected inside the fixing box 16. The locking block 18 can be placed inside the fixing box. The inner sliding block 18 has a round rod 19 fixedly connected to one side of its outer wall. The round rod 19 is used to connect the locking block 18 and the connecting plate 21, transmitting the operator's operating force. A spring 20 is sleeved on the outer wall of the round rod 19 to provide a restoring force. A limit groove 10 is opened inside the connecting rod 7 to limit the movement range of the limit block 11 and prevent the sliding rod 8 from falling off the connecting rod 7. The limit block 11 is fixedly connected to the upper surface of the sliding rod 8. The limit block 11 slides in the limit groove 10 to ensure that the sliding rod 8 slides smoothly in the connecting rod 7 and prevents the sliding rod 8 from falling off. A control panel 23 is fixedly connected to one side of the outer wall of the outer shell 1. The control panel 23 is used to control the operation of the dryer. The operator can set the temperature, running time and other parameters of the dryer through the control panel 23 to control the drying process.
[0030] Working principle: When the writing board surface needs to be treated, the sealing plate 4 can be pulled outward first. Then the sealing plate 4 will drive the connecting auxiliary device 6 to move outward. At the same time, the connecting auxiliary device 6 will also rotate the connecting rod 7 and the sliding rod 8 outward. At this time, through the rotation setting of the sliding rod 8 and the hinge block 9, and the sliding cooperation between the sliding rod 8 and the connecting rod 7, the sealing plate 4 can be pulled to drive the moving frame 5 to move outward. Then the moving frame 5 can be pulled out from the inner shell 1. When the moving frame 5 moves, the slide bar 14 under the moving frame 5 will also slide in the slide groove 13 to ensure that the moving frame 5 is pulled out or pushed in smoothly, thus realizing the convenient pulling out of the moving frame 5 and optimizing the operation process.
[0031] After the movable rack 5 is pulled out, the writing board to be processed can be placed on the placement plate 15. Then, through the setting of the refrigerant evaporator 2, it can be connected to the pipe cooling component 12 inside the outer shell 1 to form a refrigerant circulation path. After the equipment is started, the refrigerant circulates in the connecting pipe 3 and the pipe cooling component 12, and the internal temperature of the outer shell 1 is reduced through heat exchange to form a low-temperature drying environment, thereby condensing and drying the moisture on the surface of the writing board.
[0032] When the placement plate 15 needs to be cleaned, the lever 22 can be pushed first. The lever 22 can move the connecting plate 21 and the round rod 19, and the round rod 19 can then move the locking block 18 out of the slot 17. At the same time, the spring 20 will be compressed and contracted, so that the placement plate 15 can be pulled out from the inside of the moving frame 5 for cleaning. Then the cleaned placement plate 15 can be inserted into the moving frame 5 until the placement plate 15 is completely inside the moving frame 5. The lever 22 can be released, and the elasticity of the spring 20 can make the locking block 18 re-lock into the slot 17, thus realizing the convenient disassembly and cleaning of the placement plate 15.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 freeze dryer for surface treatment of writing boards, comprising a housing (1), characterized in that: A refrigerant evaporator (2) is fixedly connected to the upper surface of the outer shell (1). A connecting pipe (3) is fixedly connected inside the refrigerant evaporator (2). A pipe cooling assembly (12) is fixedly connected inside the outer shell (1). A sealing plate (4) is rotatably connected inside the outer shell (1). A movable frame (5) is provided inside the outer shell (1). A placement plate (15) is slidably connected to the inner wall of the movable frame (5). A pulling assembly is provided on one side of the outer wall of the sealing plate (4). The pulling assembly is used to pull the movable frame (5) out of the outer shell (1). A sliding assembly is provided on the lower surface of the movable frame (5). The sliding assembly is used to assist the movable frame (5) in moving. The pulling assembly includes a connecting aid (6), one side of the outer wall of the connecting aid (6) is rotatably connected to one side of the outer wall of the sealing plate (4), a connecting rod (7) is rotatably connected inside the connecting aid (6), a slide rod (8) is slidably connected inside the connecting rod (7), a hinge block (9) is rotatably connected inside the slide rod (8), and one side of the outer wall of the hinge block (9) is fixedly connected to one side of the outer wall of the movable frame (5).
2. The freeze dryer for surface treatment of writing boards according to claim 1, characterized in that: The sliding assembly includes a slide bar (14), the upper surface of which is fixedly connected to the lower surface of the movable frame (5), and a groove (13) is provided inside the outer shell (1), with the outer wall of the slide bar (14) slidably connected to the inner wall of the groove (13).
3. The freeze dryer for surface treatment of writing boards according to claim 1, characterized in that: The placement plate (15) is fixedly connected to a fixing box (16), and the movable frame (5) has a slot (17) inside.
4. A freeze dryer for surface treatment of writing boards according to claim 3, characterized in that: The fixed box (16) has a sliding block (18) inside, and a round rod (19) is fixedly connected to one side of the outer wall of the block (18).
5. A freeze dryer for surface treatment of writing boards according to claim 4, characterized in that: A spring (20) is sleeved on the outer wall of the round rod (19), and a connecting disc (21) is fixedly connected to one side of the outer wall of the round rod (19).
6. A freeze dryer for surface treatment of writing boards according to claim 5, characterized in that: The outer wall of the connecting plate (21) is fixedly connected to a lever block (22), which is used to pull the locking block (18).
7. A freeze dryer for surface treatment of writing boards according to claim 2, characterized in that: The connecting rod (7) has a limiting groove (10) inside, and the sliding rod (8) has a limiting block (11) fixedly connected to its upper surface.
8. A freeze dryer for surface treatment of writing boards according to claim 1, characterized in that: A control panel (23) is fixedly connected to one side of the outer wall of the outer casing (1).