Automatic drainage device for air tank of air compressor
Patent Information
- Application Number
- CN202522230488.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-10-22
AI Technical Summary
手动排水需要人工定期操作,效率低且容易遗忘;而现有自动排水装置多采用电动或气动控制,结构复杂、成本较高,且易出现故障,可靠性不足
通过浮箱感应水位,利用磁铁吸合与弹性连杆的协同作用控制排水阀的启闭,实现了全自动排水,无需外部动力或人工干预,工作稳定可靠。采用堵头与阀座的密封结构,并在浮箱下沉时通过拨杆与压杆的联动机构,能主动、迅速地切断磁力并确保堵头复位,有效防止泄漏。端盖采用螺栓连接,可快速拆卸,便于对水箱内部及阀门进行清理和维护。
Smart Images

Figure CN224730216U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air compressor equipment technology, specifically to an automatic drainage device for an air compressor storage tank. Background Technology
[0002] During air compressor operation, moisture in the air condenses inside the air tank, accumulating into liquid water. If this moisture is not drained promptly, it can lead to corrosion inside the air tank, affect compressed air quality, and even damage downstream equipment. Currently, common drainage methods include manual and automatic drainage. Manual drainage requires periodic manual operation, which is inefficient and prone to forgetting; while existing automatic drainage devices mostly use electric or pneumatic controls, which are complex in structure, expensive, prone to failure, and unreliable. Therefore, a simple, highly reliable automatic drainage device is needed that can automatically drain water based on the water level in the air tank, reducing maintenance costs. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides an automatic drainage device for air compressor storage tanks, which can automatically detect water levels and drain water. It has a simple structure and is easy to operate.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic drainage device for an air compressor storage tank, comprising a tank body, a drain pipe connected to the bottom of the tank body, a water tank connected to the bottom of the drain pipe, a detachable end cap on one side of the water tank, a drain pipe connected to the bottom of the end cap, a valve seat fixedly connected to one end of the drain pipe inside the end cap, a rotating block hinged to the inner wall of the end cap, a plug matching the valve seat fixedly connected to the bottom of the rotating block, a float box capable of sliding vertically inside the water tank, a connecting rod extending above the float box fixedly connected above the rotating block, the connecting rod being elastic, a magnet fixedly connected to one end of the connecting rod above the float box, and a magnet two attracting the magnet one fixedly installed above the water tank.
[0005] Preferably, a lever is fixedly installed on one side of the float, and a pressure rod is fixedly installed on the connecting rod. When the float moves downward, the lever can press the pressure rod downward.
[0006] Preferably, a guide bar is fixedly installed inside the water tank, and a groove matching the guide bar is provided on the outer wall of the float box.
[0007] Preferably, a filter valve is fixedly installed on the drain pipe.
[0008] Preferably, the end cap is attached to the water tank using bolts.
[0009] This utility model provides an automatic drainage device for an air compressor's air tank, which has the following beneficial effects: The system uses a float-mounted water level sensor and a magnetic attraction mechanism combined with a flexible connecting rod to control the opening and closing of the drain valve, achieving fully automatic drainage without external power or manual intervention. It operates stably and reliably. A sealing structure between the plug and valve seat is employed, and a linkage mechanism between a lever and a pressure rod actively and quickly cuts off the magnetic force and ensures the plug resets when the float-mounted water level drops, effectively preventing leakage. The end caps are bolted for quick disassembly, facilitating cleaning and maintenance of the tank interior and valves. Attached Figure Description
[0010] Figure 1 This is the main internal structure of the present invention. Figure 1 ; Figure 2 This is the main internal structure of the present invention. Figure 2 ; Figure 3 This is the main internal structure of the present invention. Figure 3 .
[0011] In the diagram: 1. Tank body; 2. Drain pipe; 3. Water tank; 4. End cap; 5. Drain pipe; 6. Valve seat; 7. Rotary block; 8. Plug; 9. Connecting rod; 10. Float box; 11. Magnet one; 12. Magnet two; 13. Pressure rod; 14. Actuating rod; 15. Filter valve; 16. Guide bar. Detailed Implementation
[0012] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0013] Please see Figures 1-3 This utility model provides a technical solution: an automatic drainage device for an air compressor storage tank, including a tank body 1, a drain pipe 2 connected to the bottom of the tank body 1, a water tank 3 connected to the bottom of the drain pipe 2, a detachable end cap 4 on one side of the water tank 3, a drain pipe 5 connected to the bottom of the end cap 4, a valve seat 6 fixedly connected to one end of the drain pipe 5 inside the end cap 4, a rotating block 7 hinged to the inner wall of the end cap 4, a plug 8 matching the valve seat 6 fixedly connected to the bottom of the rotating block 7, and a vertically sliding device provided inside the water tank 3. The float 10 can move upward when the water tank 3 is filled with water. A connecting rod 9 that can extend to the top of the float 10 is fixedly connected above the rotating block 7. The connecting rod 9 is elastic. A magnet 11 is fixedly connected to one end of the connecting rod 9 above the float 10. A magnet 12 that can attract magnet 11 is fixedly installed above the water tank 3. When the float 10 moves upward, it can push magnet 11 to move upward. At the same time, the connecting rod 9 can swing, so that the plug can be removed from the valve seat 6 to realize water discharge.
[0014] As an embodiment of this utility model, a lever 14 is fixedly provided on one side of the float box 10, and a pressure rod 13 is fixedly provided on the connecting rod 9. When the float box 10 moves downward, the lever 14 can press down the pressure rod 13. After the drainage is completed, the float box 10 can move downward. When the lever 14 presses down the pressure rod 13, the weight of the float box 10 can press down the connecting rod 9, causing the magnet 11 and the magnet 2 12 to separate, so that the plug 8 seals the valve seat 6.
[0015] As an embodiment of this utility model, a guide bar 16 is fixedly installed inside the water tank 3, and a groove matching the guide bar 16 is provided on the outer wall of the float box 10 to ensure that the float box 10 can move vertically up and down.
[0016] As an embodiment of this utility model, a filter valve 15 is fixedly installed on the drain pipe 2 to prevent impurities in the tank 1 from entering the water tank 3.
[0017] As an embodiment of this utility model, the end cap 4 is connected to the water tank 3 by bolts for easy internal maintenance of the water tank 3.
[0018] Working principle and usage process of this utility model: Condensate in tank 1 flows into water tank 3 through drain pipe 2. As the water level rises, float 9 rises and pushes magnet 11 upwards. At this time, due to the pressure inside water tank 3, the seal of plug 8 is not easily broken, causing the elastic connecting rod 10 to bend. As float 9 continues to rise, magnet 11 eventually engages with magnet 12. Please refer to [link / reference]. Figure 1 After engagement, the elastic potential energy stored in the connecting rod 10 due to bending is released and converted into a torque that drives the rotating block 7 to rotate, thereby decisively removing the plug 8 from the valve seat 6. The water in the water tank 3 is then discharged through the drain pipe 5, thus achieving water drainage.
[0019] Please see Figure 2 , 3 As drainage proceeds and the water level drops, the float 9 moves downwards. When the lever 14 on the float 9 contacts the pressure rod 13 on the connecting rod 10, the weight of the float 9 presses down on the pressure rod 13, forcing magnet 11 to separate from magnet 12. The plug 8 resets under its own weight and / or the action of water flow, re-sealing the valve seat 6, completing the drainage cycle and closing the water tank 3.
[0020] 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. An automatic drainage device for an air compressor storage tank, comprising a tank body (1), wherein a drain pipe (2) is connected to the bottom of the tank body (1), characterized in that, The bottom of the drain pipe (2) is connected to a water tank (3). A detachable end cap (4) is provided on one side of the water tank (3). A drain pipe (5) is connected to the bottom of the end cap (4). A valve seat (6) is fixedly connected to one end of the drain pipe (5) inside the end cap (4). A rotating block (7) is hinged to the inner wall of the end cap (4). A plug (8) matching the valve seat (6) is fixedly connected to the bottom of the rotating block (7). A float box (10) that can slide vertically is provided inside the water tank (3). A connecting rod (9) that can extend to the top of the float box (10) is fixedly connected above the rotating block (7). The connecting rod (9) is elastic. A magnet (11) is fixedly connected to one end of the connecting rod (9) above the float box (10). A magnet (12) that can attract the magnet (11) is fixedly provided above the water tank (3).
2. The automatic drainage device for an air compressor storage tank according to claim 1, characterized in that, A lever (14) is fixedly installed on one side of the float (10), and a pressure rod (13) is fixedly installed on the connecting rod (9). When the float (10) moves downward, the pressure rod (13) can be pressed down by the lever (14).
3. The automatic drainage device for an air compressor storage tank according to claim 1, characterized in that, The water tank (3) is fixedly provided with a guide bar (16), and the outer wall of the float box (10) is provided with a groove that matches the guide bar (16).
4. The automatic drainage device for an air compressor storage tank according to claim 1, characterized in that, A filter valve (15) is fixedly installed on the drain pipe (2).
5. An automatic drainage device for an air compressor storage tank according to claim 1, characterized in that, The end cap (4) is attached to the water tank (3) by means of bolts.