Energy-saving air drying electric heating tube
By designing quick-change components and movable plates, the problem of having to replace the entire unit when the electric heating element of an existing air dryer is damaged is solved. This allows for the individual replacement of the electric heating element and the desiccant, reducing maintenance costs and improving the ease of maintenance and service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-04-07
AI Technical Summary
The electric heating element of existing air dryers is designed as an integrated unit. When it is damaged, the entire component needs to be replaced, which increases maintenance costs and wastes usable parts.
The quick-change assembly, including the combination of a plug, baffle, and spring, enables rapid replacement of the electric heating element; the combination of a moving plate and a locking block enables convenient replacement of the desiccant.
It enables the individual replacement of electric heating elements and desiccants, reducing maintenance costs and improving maintenance convenience and equipment lifespan.
Smart Images

Figure CN224086407U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air drying technology, and in particular to an energy-saving air drying electric heating tube. Background Technology
[0002] An air dryer is a device used to reduce air humidity. It is widely used in industrial production, warehousing, laboratories, and daily life. By drying the air, it effectively prevents mold, corrosion, and equipment damage caused by moisture, improves air quality, and enhances the stability of product storage and production environments. Air dryers can improve work efficiency, ensure the normal operation of equipment, and adapt to different environmental needs, providing reliable drying solutions for various scenarios.
[0003] An air dryer mainly consists of a heating device, a fan, an air inlet and outlet system, a desiccant, and a control system. Its working principle is to use the heating device to increase the air temperature, causing the moisture in the air to evaporate, and the fan to promote air circulation. The desiccant absorbs moisture again, accelerating the drying process. The air inlet system draws in humid air, which is heated and circulated, reducing the moisture content. The air outlet system then discharges relatively dry air. The control system can adjust parameters such as temperature and fan speed to meet the drying needs of different environments.
[0004] Existing air dryers can effectively reduce air humidity and ensure normal equipment operation. However, the electric heating elements of existing air dryers are usually designed as a single unit. If one of the heating elements is damaged, the entire heating assembly needs to be replaced. It is not possible to replace the damaged part separately, which increases maintenance costs and wastes other usable heating elements, placing a significant economic burden on users. Therefore, an energy-saving air drying electric heating element is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an energy-saving air-drying electric heating tube, which aims to improve the problem of existing integrated electric heating tubes where damaged parts cannot be replaced separately, thus increasing maintenance costs.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An energy-saving air-drying electric heating tube includes a housing, an internal docking ring, a quick-change assembly, and an electric heating tube slidably connected inside the docking ring. An exhaust fan is installed on the front side of the housing, an intake fan is installed inside the inspection door of the housing, and a desiccant storage box is slidably connected inside the housing. A pull-out assembly is installed on the top of the desiccant storage box. The quick-change assembly includes a fixed shell, which is fixedly connected inside the docking ring. A rod is slidably connected inside the fixed shell, and a baffle is fixedly connected to the outer side of the rod.
[0008] As a further description of the above technical solution:
[0009] The electric heating tube has a slot on its side, and the plug is engaged with the slot.
[0010] As a further description of the above technical solution:
[0011] A spring is sleeved around the outer periphery of the insertion rod, and the spring is disposed between the fixed shell and the baffle.
[0012] As a further description of the above technical solution:
[0013] The pull-out assembly includes a movable plate, which is slidably connected to the top of the desiccant placement box and the top of the housing. A docking block is fixedly connected to the top of the housing.
[0014] As a further description of the above technical solution:
[0015] A locking block is fixedly connected to the side of the movable plate, and a locking groove is opened on the side of the docking block. The locking block and the locking groove are engaged with each other.
[0016] As a further description of the above technical solution:
[0017] A slider is fixedly connected to the side of the desiccant placement box, and a groove is opened inside the moving plate, with the slider slidably connected inside the groove;
[0018] As a further description of the above technical solution:
[0019] The docking ring has a docking groove inside, and the connecting end of the electric heating tube is slidably connected inside the docking groove.
[0020] As a further description of the above technical solution:
[0021] A control panel is mounted on the front side of the housing.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the electric heating element can be quickly replaced by the cooperation of the plug rod, baffle and spring. When an electric heating element is damaged, it is not necessary to replace the whole set of electric heating elements. Only the damaged part needs to be disassembled and replaced. This reduces maintenance costs, reduces economic losses, avoids wasting other usable electric heating elements, and improves the convenience of equipment maintenance and service life.
[0024] 2. In this utility model, the desiccant can be easily replaced by the cooperation of the moving plate and the locking block. When the desiccant fails, simply pull out the placement box to replace the desiccant without disassembling the entire device, which ensures the continuous drying effect of the device, improves maintenance efficiency, and reduces the user's operating costs. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of an energy-saving air-drying electric heating tube proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the connecting ring structure of an energy-saving air-drying electric heating tube proposed in this utility model;
[0027] Figure 3 This is a schematic diagram of the insertion rod of an energy-saving air-drying electric heating tube proposed in this utility model;
[0028] Figure 4 This is a schematic diagram of the structure of the movable plate of an energy-saving air-drying electric heating tube proposed in this utility model;
[0029] Figure 5 This is a schematic diagram of the slider of an energy-saving air-drying electric heating tube proposed in this utility model.
[0030] Legend:
[0031] 1. Housing; 2. Connecting ring; 3. Electric heating element; 4. Exhaust fan; 5. Intake fan; 6. Desiccant box; 7. Fixed housing; 8. Insert rod; 9. Slot; 10. Baffle; 11. Spring; 12. Connecting groove; 13. Moving plate; 14. Connecting block; 15. Locking block; 16. Locking groove; 17. Slider; 18. Slide; 19. Control panel. Detailed Implementation
[0032] 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.
[0033] Reference Figure 1 - Figure 3 This utility model provides an embodiment of an energy-saving air-drying electric heating tube, comprising a housing 1, a docking ring 2 inside the housing 1, a quick-change assembly inside the docking ring 2, an electric heating tube 3 slidably connected inside the docking ring 2, an exhaust fan 4 installed on the front side of the housing 1, an intake fan 5 installed inside the inspection door of the housing 1, a desiccant box 6 slidably connected inside the housing 1, and a pull-out assembly installed on the top of the desiccant box 6; the quick-change assembly includes a fixed shell 7, which is fixedly connected inside the docking ring 2 to protect the internal structure; an insertion rod 8 is slidably connected inside the fixed shell 7; a baffle 10 is fixedly connected to the outside of the insertion rod 8, and the insertion rod 8 is moved by moving the baffle 10. A slot 9 is provided on the side of the electric heating tube 3, and the insertion rod 8 engages with the slot 9, moving the insertion rod 8 into the slot 9 to fix the position of the electric heating tube 3. A spring 11 is fitted around the outer periphery of the insertion rod 8. The spring 11 is positioned between the fixed shell 7 and the baffle 10. The pressure applied by the spring 11 to the baffle 10 causes the baffle 10 to move inward along with the insertion rod 8.
[0034] Reference Figure 1 , Figure 4 and Figure 5 The pull-out assembly includes a movable plate 13, which is slidably connected to the top of the desiccant box 6. The desiccant box 6 is pulled out by the movable plate 13. The movable plate 13 is slidably connected to the top of the housing 1. A mating block 14 is fixedly connected to the top of the housing 1, and the mating block 14 is used to limit the position of the movable plate 13. A locking block 15 is fixedly connected to the side of the movable plate 13. A locking groove 16 is opened on the side of the mating block 14. The locking block 15 and the locking groove 16 engage with each other, and the position of the desiccant box 6 is fixed by the cooperation of the locking block 15 and the locking groove 16.
[0035] Reference Figure 1 , Figure 3 and Figure 5 A slider 17 is fixedly connected to the side of the desiccant placement box 6. A groove 18 is provided inside the moving plate 13, and the slider 17 is slidably connected inside the groove 18. The cooperation between the slider 17 and the groove 18 prevents the desiccant placement box 6 from detaching from the moving plate 13. A docking groove 12 is provided inside the docking ring 2, and the connecting end of the electric heating tube 3 is slidably connected inside the docking groove 12. By setting the docking groove 12, the connecting end of the electric heating tube 3 can enter the docking ring 2. A control panel 19 is installed on the front side of the housing 1, and the various functions of the switching device are controlled through the control panel 19.
[0036] Working principle: When a single electric heating element 3 is damaged, pull the insert rod 8 on the side of the corresponding docking ring 2 outward to disengage it from the slot 9 of the electric heating element 3. The corresponding electric heating element 3 can then be removed from inside the docking ring 2. When installing the electric heating element 3, pull the insert rod 8 outward and place the electric heating element 3 into the docking ring 2, making the slot 9 perpendicular to the position of the insert rod 8. Release the insert rod 8, and the pressure generated by the baffle 10 and the spring 11 will cause the insert rod 8 to move inward and lock into the slot 9, fixing the position of the electric heating element 3. This allows for quick replacement of a single damaged electric heating element 3, avoiding the need to replace the entire set of electric heating elements 3 when a single electric heating element 3 is damaged, thus reducing the economic burden.
[0037] When the desiccant fails, the desiccant placement box 6 is pulled out by the moving plate 13, and the moving plate 13 and the desiccant placement box 6 are slid apart. The desiccant inside the desiccant placement box 6 is replaced, and then the moving plate 13 is reinstalled. The desiccant placement box 6 is inserted into the housing 1, so that the locking block 15 of the moving plate 13 is engaged into the locking groove 16 of the docking block 14, fixing the position of the moving plate 13 and the desiccant placement box 6. This allows for quick replacement of the desiccant and ensures the drying effect of the device.
[0038] 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. An energy-saving air-drying electric heating tube, comprising a housing (1), characterized in that: The housing (1) is provided with a docking ring (2) inside, a quick-change assembly is installed inside the docking ring (2), an electric heating tube (3) is slidably connected inside the docking ring (2), an exhaust fan (4) is installed on the front side of the housing (1), an intake fan (5) is installed inside the inspection door of the housing (1), a desiccant placement box (6) is slidably connected inside the housing (1), and a pull-out assembly is installed on the top of the desiccant placement box (6); The quick-change assembly includes a fixed housing (7), which is fixedly connected inside the docking ring (2). A plug rod (8) is slidably connected inside the fixed housing (7), and a baffle (10) is fixedly connected to the outside of the plug rod (8).
2. The energy-saving air-drying electric heating tube according to claim 1, characterized in that: The electric heating tube (3) has a slot (9) on its side, and the plug (8) is engaged with the slot (9).
3. The energy-saving air-drying electric heating tube according to claim 1, characterized in that: A spring (11) is sleeved on the outer periphery of the insertion rod (8), and the spring (11) is disposed between the fixed shell (7) and the baffle (10).
4. The energy-saving air-drying electric heating tube according to claim 1, characterized in that: The pull-out assembly includes a movable plate (13), which is slidably connected to the top of the desiccant placement box (6) and the top of the housing (1). A docking block (14) is fixedly connected to the top of the housing (1).
5. The energy-saving air-drying electric heating tube according to claim 4, characterized in that: The movable plate (13) is fixedly connected to a locking block (15) on its side, and the docking block (14) is provided with a locking groove (16) on its side. The locking block (15) and the locking groove (16) are engaged with each other.
6. The energy-saving air-drying electric heating tube according to claim 4, characterized in that: A slider (17) is fixedly connected to the side of the desiccant placement box (6), and a groove (18) is provided inside the moving plate (13), and the slider (17) is slidably connected inside the groove (18).
7. The energy-saving air-drying electric heating tube according to claim 1, characterized in that: The docking ring (2) has a docking groove (12) inside, and the connecting end of the electric heating tube (3) is slidably connected inside the docking groove (12).
8. The energy-saving air-drying electric heating tube according to claim 1, characterized in that: A control panel (19) is mounted on the front side of the housing (1).