Novel air dryer convenient to use

Abstract

The utility model provides a novel air dryer convenient to use. The dryer comprises a valve collection plate assembly, a drying cylinder assembly, a lower end cover, a drain valve, an oil-water separator, a flash discharge valve, an electric control box, a mounting frame and a bypass pipeline. The two ends of the drying cylinder assembly are connected with the valve collecting plate assembly and the lower end cover respectively, the drain valve is arranged on the lower end cover, the oil-water separator is arranged on one side of the drying cylinder assembly and connected with the valve collecting plate assembly and the flash exhaust valve respectively, and the flash exhaust valve is arranged at the bottom of the oil-water separator and connected with the adjacent drain valve through the control air pipe. The electrical control box is in bolted connection with the valve collecting plate assembly; the whole air dryer is simple and quick to disassemble, easy to maintain, convenient to operate and the like; the adsorbent column is used for adsorbing gaseous moisture in compressed air and intercepting mechanical impurities; the drain valve is a normally closed valve and is used for discharging impurities and water generated in the drying and purifying process into the atmosphere.

Description

Technical Field

[0001] This application relates to the field of compressor equipment technology, and specifically to a novel air dryer that is easy to use. Background Technology

[0002] Compressed air is increasingly used in rail vehicles, such as in brakes, pneumatic doors, air springs, and other pneumatic equipment. The quality of compressed air directly affects the performance of pneumatic equipment. Compressed air commonly contains three major harmful substances: oil, water, and dust. Oil deposits will clog pipelines and slow valve operation; dust and other mechanical impurities will accelerate the wear and tear of pneumatic equipment and affect valve closure; water is particularly harmful. Condensate in compressed air is acidic, and acidic condensate can cause severe corrosion of valves and pipelines. In winter, the freezing of condensate can cause brake system malfunctions such as pipeline blockage, brake valve jamming, and failure, seriously threatening the operational safety of rail vehicles.

[0003] An air dryer is a device that can effectively remove impurities such as oil, water, and dust from compressed air, reducing corrosion, blockage, condensation, and icing in the braking and pneumatic systems of rail locomotives and vehicles. However, existing air dryers are complex in structure, difficult to maintain and disassemble, resulting in low labor input and poor drying effect, which affects work efficiency.

[0004] Therefore, existing technologies need further improvement and enhancement. Utility Model Content

[0005] This application provides a novel air dryer with good drying and purification effects and easy maintenance, in order to solve the problems of low modularity, inconvenient disassembly and maintenance, poor drying effect, high labor input and low work efficiency of existing air dryers.

[0006] The technical solution adopted in this application is as follows:

[0007] This application provides a novel, user-friendly air dryer, comprising a valve manifold assembly, a drying cylinder assembly, a lower end cover, a drain valve, an oil-water separator, a flash drain valve, an electrical control box, a mounting bracket, and a bypass pipeline; the two ends of the drying cylinder assembly are respectively connected to the valve manifold assembly and the lower end cover, and the drain valve is located at...

[0008] The lower end cover and oil-water separator are located on one side of the drying cylinder assembly and are respectively connected to the valve manifold assembly and the flash drain valve. The flash drain valve is located at the bottom of the oil-water separator and is connected to the adjacent drain valve through the control air pipe. The electrical control box is bolted to the valve manifold assembly.

[0009] As a preferred embodiment of this application, the valve manifold assembly, the drying cylinder assembly, the oil-water separator, the flash drain valve, and the drain valve are modular in structure, and each module is detachable.

[0010] In a preferred embodiment of this application, the drying cylinder assembly includes two parallel drying cylinders. The drying cylinder body has a double-layer structure and also includes an O-ring seal, a retaining ring, a baffle, an adsorbent column, a compression spring, a pressure plate, and countersunk bolts. The adsorbent column is housed inside the drying cylinder, and an O-ring seal, a retaining ring, and a baffle are provided at the connection between the upper outlet of the drying cylinder and the upper end of the adsorbent column.

[0011] In a preferred embodiment of this application, a compression spring is provided between the baffle at the bottom of the adsorbent column and the inner bottom wall of the drying cylinder; a pressure plate is provided between the compression spring and the inner bottom wall of the drying cylinder.

[0012] As a preferred embodiment of this application, the drain valve comprises: a drain valve body, a drain valve piston, a drain valve spring, a connecting rod, a drain sealing gasket, a drain valve cover, a first K-ring, a second K-ring, a compression fitting, and a heating tube.

[0013] In a preferred embodiment of this application, the connecting rod connects the discharge sealing gasket and the discharge valve piston together. A first K-ring and a second K-ring are respectively provided between the two ends of the discharge valve piston and the inner wall of the discharge valve body. The discharge valve cover is placed on the discharge valve body, and a discharge valve spring is provided between the discharge valve cover and the inner bottom wall of the discharge valve piston.

[0014] In a preferred embodiment of this application, the oil-water separator includes: a mounting base, an oil-water separator cylinder, an oil-water separator filter element, and an oil-water separator base; the mounting base is connected to the valve manifold assembly, and both ends of the oil-water separator cylinder are detachably connected to the oil-water separator base and the mounting base; an oil-water separator filter element is disposed inside the oil-water separator cylinder, and the oil-water separator filter element is disposed along the length direction of the oil-water separator cylinder.

[0015] As a preferred embodiment of this application, the flash discharge valve comprises a flash discharge valve body, a discharge valve piston, a discharge valve spring, a flash discharge connecting rod, a flash discharge sealing gasket, a pressure plate, a lock nut, a flash discharge valve cover, a first K-ring, a second K-ring, a compression pipe joint, and a heating tube.

[0016] In a preferred embodiment of this application, anti-loosening nuts and drain valve pistons are respectively provided at both ends of the flash discharge connecting rod, and the structure of the flash discharge valve corresponds to the structure of the drain valve.

[0017] In a preferred embodiment of this application, the flash discharge valve further includes a discharge sealing gasket. The discharge sealing gasket and the flash discharge connecting rod constitute a shuttle valve. The valve port is located between the discharge sealing gaskets. Under the action of the discharge valve spring, the left side of the shuttle valve is closed. When the shuttle valve receives a pressure signal, the pressurized air overcomes the spring force to close the right side of the shuttle valve. The switching between the closing of the left and right sides of the shuttle valve completes the instantaneous discharge process of the flash discharge valve.

[0018] Due to the adoption of the above technical solution, the technical effects achieved by this application are as follows:

[0019] This application provides a novel, user-friendly air dryer. By employing modular, separate connections between components, the entire air dryer achieves simple, quick disassembly, easy maintenance, and convenient operation. Furthermore, the adsorbent column is encapsulated in a dustproof material, effectively adsorbing gaseous moisture and intercepting mechanical impurities from compressed air. A normally closed drain valve releases impurities and moisture generated during the drying process into the atmosphere. The heating element incorporates temperature control to prevent the drain valve from freezing in winter. Moreover, the drying cylinder has a double-layer structure; humid air flows downwards through the interlayer and then enters the adsorbent column in the inner cylinder. This structure effectively cools the hot, humid air, improving the drying efficiency of the adsorbent column. Additionally, a high-efficiency oil-water separator filters out gaseous oil and liquid water from the compressed air, releasing them into the atmosphere through a lower flash valve to protect the adsorbent from compressor lubricant contamination. The heating element further prevents the flash valve from freezing in winter. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain this application and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic diagram of the overall structure of a novel, user-friendly air dryer provided for this application;

[0022] Figure 2 A schematic diagram of the drying cylinder structure of a novel, user-friendly air dryer provided in this application;

[0023] Figure 3 A schematic diagram of the drain valve structure of a novel, user-friendly air dryer provided in this application;

[0024] Figure 4 A schematic diagram of the oil-water separator structure of a novel, user-friendly air dryer provided in this application;

[0025] Figure 5 A schematic diagram of the flash exhaust valve structure of a novel, user-friendly air dryer provided in this application;

[0026] Figure 6 A schematic diagram of the electrical control box structure of a novel, user-friendly air dryer provided in this application;

[0027] Figure 7A schematic diagram illustrating the principle of a novel, user-friendly air dryer provided in this application;

[0028] Figure 8 A structural schematic diagram of a novel, user-friendly air dryer provided in this application, from another perspective;

[0029] Figure 9 A schematic diagram of the valve manifold assembly structure of a novel, user-friendly air dryer provided in this application;

[0030] Figure 10 Provided for this application Figure 9 Sectional view at point A.

[0031] Figure label:

[0032] 1. Valve manifold assembly; 11. Valve manifold; 12. Inlet valve; 13. Check valve; 14. Inlet process plug; 15. Throttling valve; 2. Drying cylinder assembly; 21. Drying cylinder; 3. Lower end cover; 4. Drain valve; 5. Oil-water separator; 6. Flash drain valve; 7. Electrical control box; 8. Mounting bracket; 9. Mounting base; 10. Bypass pipeline; 11. O-ring seal; 12. Retaining ring; 13. Baffle; 14. Adsorbent column; 15. Compression spring; 16. 17. Pressure plate; 18. Countersunk bolt; 19. Drain valve body; 20. Drain valve piston; 21. Drain valve spring; 22. Connecting rod; 23. Drain sealing gasket; 24. Drain valve cover; 25. First K-ring; 26. Second K-ring; 27. Compression pipe fitting; 28. Heating tube; 29. ​​Flash drain valve body; 30. Flash drain connecting rod; 31. Flash drain sealing gasket; 32. Pressure plate; 33. Anti-loosening nut; 34. Flash drain valve cover; 35. Oil-water separator cylinder; 36. Oil-water separator filter element; 37. Oil-water separator base; 38. Solenoid valve; 39. Time controller;

[0033] 39. Terminal block; 40. Electrical box; 41. Electrical socket; 42. Wire locker; 43. Control duct. Detailed Implementation

[0034] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0036] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0039] like Figures 1 to 8 As shown, this application provides a novel air dryer that is easy to use. The dryer comprises a valve manifold assembly 1, a drying cylinder assembly 2, a lower end cover 3, a drain valve 4, an oil-water separator 5, a flash drain valve 6, an electrical control box 7, a mounting bracket 8, and a bypass pipeline 10. The two ends of the drying cylinder assembly 2 are respectively connected to the valve manifold assembly 1 and the lower end cover 3. The drain valve 4 is disposed on the lower end cover 3. The oil-water separator 5 is disposed on one side of the valve manifold assembly 1 and is respectively connected to the valve manifold assembly 1 and the flash drain valve 6. The flash drain valve 6 is disposed at the bottom of the oil-water separator 5 and is connected to the adjacent drain valve through a control air duct. The electrical control box 7 is bolted to the valve manifold assembly 1.

[0040] Among them, such as Figure 1 and Figure 8As shown, the valve manifold assembly 1, dryer cylinder assembly 2, drain valve 4, oil-water separator 5, and flash drain valve 6 are modular structures. Each module is detachable, which facilitates disassembly, assembly, and maintenance of each module structure. This not only greatly speeds up the work efficiency and simplifies the structure, but also greatly shortens the maintenance time and improves maintenance efficiency. The valve manifold assembly 1 includes: valve manifold 11, intake valve 12, check valve 13, intake process plug 14, and throttle valve 15.

[0041] Specifically, the two drying cylinder assemblies 2 containing the adsorbent are fixed together with the valve manifold assembly 1 by 8 hexagon socket bolts; the two drying cylinder assemblies 2 are fixed together with the two lower end caps 3 by 8 hexagon socket bolts; the drain valve 4 is fixed together with the lower end cap 3 by 2 hexagon socket bolts; the mounting base 9 of the oil-water separator 5 is fixed together with the valve manifold assembly 1 by 2 hexagon socket bolts; the flash drain valve 6 is fixed together with the oil-water separator base 36 by 2 hexagon socket bolts; three heating tubes 27 pass through the mounting holes of the two drain valves 4 and the flash drain valve 6 and are fixed to the two drain valves 4 and the flash drain valve 6 by 3 nuts respectively; the electrical control box 7 is fixed together with the valve manifold assembly 1 by 2 hexagon socket bolts; the mounting bracket 8 is fixed together with the air dryer by 4 hexagon socket bolts; the bypass pipeline 10 is fixed to the valve manifold 1 and the mounting base 9 of the oil-water separator 5 by 2 flange seats and 2 air-passing bolt sleeves respectively.

[0042] As a preferred embodiment of this application, such as Figure 2 As shown, the drying cylinder assembly 2 includes two parallel drying cylinders 21. The drying cylinder body has a double-layer structure and also includes an O-ring seal 11, a retaining ring 12, a baffle 13, an adsorbent column 14, a compression spring 15, a pressure plate 16, and a countersunk bolt 17. The adsorbent column 14 contains...

[0043] Placed inside the drying cylinder 21, the upper part of the outlet of the drying cylinder 21 is connected to the upper end of the adsorbent column with an O-ring 11, a retaining ring 12 and a baffle 13.

[0044] A compression spring 15 is provided between the bottom of the adsorbent column and the inner bottom wall of the drying cylinder 21; a pressure plate 16 is provided between the compression spring 15 and the inner bottom wall of the drying cylinder 2; the adsorbent column is made of dustproof material to encapsulate the adsorbent into a column shape; the function of the adsorbent column is to adsorb gaseous moisture in compressed air and intercept mechanical impurities.

[0045] In a preferred embodiment, the drain valve 4 comprises: a drain valve body 18, a drain valve piston 19, a drain valve spring 20, a connecting rod 21, a drain sealing gasket 22, a drain valve cover 23, a first K-ring 24, a second K-ring 25, a compression fitting 26, and a heating tube 27.

[0046] Furthermore, such as Figure 3 As shown, the first K-ring 24 and the second K-ring 25 are sequentially arranged from the drain valve 4 rod to the end of the drain valve body 18, and are respectively located on the outer edge of the drain valve piston 19.

[0047] Understandably, the drain valve 4 is a normally closed valve, and its function is to discharge impurities and moisture generated during the drying and purification process into the atmosphere; the function of the heating tube 27 is to prevent the drain valve 4 from freezing in winter.

[0048] Specifically, the connecting rod 21 connects the discharge sealing gasket 22 and the discharge valve piston 19 together. The two ends of the discharge valve piston 19 are respectively provided with a first K-ring 24 and a second K-ring 25 between them and the inner wall of the discharge valve body 18. The discharge valve cover 23 is placed on the discharge valve body 18. The discharge valve spring 20 is provided between the discharge valve cover 23 and the inner bottom wall of the discharge valve piston 19.

[0049] In addition, such as Figure 4 As shown, the structure of the flash discharge valve 6 is similar to that of the discharge valve 4, and it also includes a similar flash discharge valve body 28, discharge valve piston 19, discharge valve spring 20, flash discharge connecting rod 29, flash discharge sealing gasket 30, pressure plate 31, anti-loosening nut 32, flash discharge valve cover 33, first K-ring 24, second K-ring 25, compression pipe joint 26, and heating tube 27.

[0050] The difference lies in the structure of the flash discharge connecting rod 29 of the flash discharge valve 6, which differs from the structure of the connecting rod 21 of the discharge valve 4. Figure 5 Two drain valves 4 are provided, located at the bottom of the drying cylinder assembly 2. The flash drain valve 6 is located at the bottom of the mounting base 9 of the oil-water separator 5, and a control air duct is provided between it and the drain valve 4.

[0051] It should be noted that the flash discharge connecting rod 29 is equipped with an anti-loosening nut 32 and a discharge valve piston 19 at both ends, and the structure of the flash discharge valve 6 corresponds to that of the discharge valve 4. The flash discharge valve 6 has two flash discharge sealing gaskets.

[0052] 30, two flash gaskets 30 and flash connecting rod 29 constitute a shuttle valve, with the valve port located at the two flash gaskets.

[0053] Between 30 and 30, the left side of the shuttle valve is closed under the action of the drain valve spring 20; when the shuttle valve receives a pressure signal, the pressurized air overcomes the spring force to close the right side of the shuttle valve, and the switching between the closing of the left and right sides of the shuttle valve completes the instantaneous draining process of the flash drain valve 6.

[0054] As a preferred embodiment of this application, such as Figure 4As shown, the oil-water separator 5 includes: a mounting base 9, an oil-water separator cylinder 34, an oil-water separator filter element 35, and an oil-water separator base 36; the mounting base 9 is connected to the valve manifold assembly 1, and the two ends of the oil-water separator cylinder 34 are detachably connected to the oil-water separator base 36 and the mounting base 9. The oil-water separator filter element 35 is installed inside the oil-water separator cylinder 34, and the oil-water separator filter element 35 is arranged along the length direction of the oil-water separator cylinder 34.

[0055] The oil-water separator 5 filters out gaseous oil and liquid water from the compressed air and discharges it to the atmosphere through the lower flash valve 6 to protect the adsorbent from contamination by the air compressor lubricating oil; the heating tube 27 prevents the flash valve 6 from freezing in winter.

[0056] Optionally, such as Figure 6 As shown, the electrical control box 7 includes: a time controller 38, a solenoid valve 37, a terminal block 39, an electrical box, an electrical socket 41, a wire locking socket 42, and hex bolts. The function of the electrical control box 7 is to control the working status of the two towers of the dryer. The most significant feature of the time controller 38 is its time memory function, which remembers the working status of the two towers of the dryer when the air compressor stops pumping air, and resumes operation when the air compressor resumes pumping air, achieving the goal of identical working time for both towers, thereby achieving the optimal drying effect.

[0057] Specifically, such as Figure 1 , Figure 7 and Figure 8 As shown, the working principle of an air dryer is as follows: Figure 5 As shown. Flash valve 6 is used to discharge oil, water, and impurities filtered by the high-efficiency oil-water separator 5 to the atmosphere; the inlet valve and drain valve 4 are used to control the direction of compressed air flow, allowing the left and right drying towers to alternately dry and regenerate by opening and closing the inlet valve and drain valve 4. The opening and closing of flash valve 6, inlet valve, and drain valve 4 are controlled by time controller 38.

[0058] When the time controller 38 sends an electrical control signal to the right solenoid valve 37 to energize it, the right solenoid valve...

[0059] Air control signals are sent to the flash exhaust valve 6, right intake valve, and right exhaust valve 4. Under the action of the pressure signal, the flash exhaust valve 6 overcomes the spring force and momentarily opens and closes the right intake valve. The oil, water, and impurities filtered by the high-efficiency oil-water separator 5 are discharged to the atmosphere through the flash exhaust valve 6. The right exhaust valve 4 is opened and the right intake valve is closed. At this time, under the action of the spring force, the left intake valve is in the open state and the left exhaust valve 4 is in the closed state. The humid compressed air from the air compressor enters the left drying tower through the high-efficiency oil-water separator 5 and the left intake valve. The adsorbent in the left drying tower adsorbs the water vapor in the compressed air, and then the dried air is sent to the main air cylinder through the left check valve to achieve the drying of the compressed air.

[0060] Meanwhile, the right drying tower is connected to the atmosphere via the right exhaust valve 4, and the adsorbent inside the right drying tower releases moisture. A small amount of dry air from the left drying tower, passing through a throttling valve, carries the moisture from the surface of the adsorbent and is discharged into the atmosphere via the right exhaust valve 4, thus regenerating the right drying tower.

[0061] Furthermore, the time controller 38 of the air dryer periodically sends alternating excitation signals to the two solenoid valves 37 on the left and right sides. When the time controller 38 sends an electrical control signal to the left solenoid valve 37, the flash valve 6, under the action of spring force, momentarily opens and closes. While the right drying tower is in the drying state, the left drying tower is in the regeneration state. The time controller 38 of the air dryer has a time memory function, remembering the working state of the two towers of the dryer when the air compressor stops pumping. When the air compressor resumes pumping, it continues working, achieving the goal of identical working time for both towers, thereby achieving the best drying effect.

[0062] For example, when the pressure in the main air cylinder (dryer outlet) is below 500 kPa, the control valve does not output a pressure signal, and regardless of whether the solenoid valve 37 is energized, it will not send air control signals to the corresponding flash exhaust valve 6, intake valve, and exhaust valve 4. Under the action of spring force, the intake valve and exhaust valve 4 are both in the open state, the exhaust valve 4 is in the closed state, and the flash exhaust valve 6 is in the closed state without any control signal change. Compressed air from the air compressor enters the left and right drying towers simultaneously after passing through the high-efficiency oil-water separator 5, and then charges the main air cylinder through their respective check valves. Since the two towers dry simultaneously, the compressed air flow rate is reduced, thereby solving the problem of poor low-pressure adsorption of the dryer and increasing the charging time of the air cylinder. When the pressure in the main air cylinder is above 500 kPa, the control valve outputs a pressure signal, and the dryer enters a periodic drying and regeneration process under the control of the time controller 38.

[0063] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0064] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0065] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A new type of air dryer which is easy to use, characterized in that, The air dryer comprises a valve manifold assembly, a drying cylinder assembly, a lower end cover, a drain valve, an oil-water separator, a flash-off valve, an electrical control box, a mounting rack and a bypass pipeline; two ends of the drying cylinder assembly are connected with the valve manifold assembly and the lower end cover respectively, the drain valve is arranged on the lower end cover, the oil-water separator is arranged on one side of the drying cylinder assembly and connected with the valve manifold assembly and the flash-off valve respectively, the flash-off valve is arranged at the bottom of the oil-water separator and connected with the adjacent drain valve through a control air pipe; the electrical control box is bolted with the valve manifold assembly.

2. A new type of air dryer for easy use as claimed in claim 1, characterized in that, The valve manifold assembly, the drying cylinder assembly, the drain valve, the oil-water separator and the flash-off valve are modular structures, and each module is detachably connected with the mounting rack of the air dryer; the valve manifold assembly comprises a valve manifold, an inlet valve, a check valve, an inlet process plug and a throttle valve.

3. A new type of air dryer for easy use as claimed in claim 2, wherein, The drying cylinder assembly comprises two drying cylinders arranged in parallel, the drying cylinder body is a double-layer structure, and further comprises an O-shaped sealing ring, a check ring, a baffle, an adsorbent column, a compression spring, a pressing plate and a countersunk bolt; the adsorbent column is contained in the drying cylinder, and the upper outlet of the drying cylinder is provided with the O-shaped sealing ring, the check ring and the baffle at the connection position with the upper end of the adsorbent column.

4. A new type of air dryer for easy use as claimed in claim 3, wherein, The baffle at the bottom of the adsorbent column is provided with the compression spring between the inner bottom wall of the drying cylinder; the compression spring is provided with the pressing plate between the inner bottom wall of the drying cylinder.

5. A new type of air dryer for easy use as claimed in claim 4, wherein, The drain valve comprises a drain valve body, a drain valve piston, a drain valve spring, a connecting rod, a drain sealing gasket, a drain valve cover, a first K-shaped ring, a second K-shaped ring, a compression pipe joint and a heating pipe.

6. A new type of air dryer for easy use as claimed in claim 5, wherein, The connecting rod connects the drain sealing gasket and the drain valve piston together, the first K-shaped ring and the second K-shaped ring are arranged between the inner wall of the drain valve body and the two ends of the drain valve piston respectively, the drain valve cover is arranged on the drain valve body, and the drain valve spring is arranged between the inner bottom wall of the drain valve piston and the drain valve cover. The oil-water separator comprises a mounting seat, an oil-water separator cylinder body, an oil-water separator filter element and an oil-water separator base; the mounting seat is connected with the valve manifold assembly, the two ends of the oil-water separator cylinder body are detachably connected with the oil-water separator base and the mounting seat, the oil-water separator filter element is arranged in the oil-water separator cylinder body and arranged along the length direction of the oil-water separator cylinder body.

7. A new and convenient air dryer as claimed in claim 6, wherein, The flash-off valve comprises a flash-off valve body, a drain valve piston, a drain valve spring, a flash-off connecting rod, a flash-off sealing gasket, a pressing plate, a lock nut, a flash-off valve cover, a first K-shaped ring, a second K-shaped ring, a compression pipe joint and a heating pipe.

8. A new type of air dryer for easy use as claimed in claim 7, characterized in that, The two ends of the flash-off connecting rod are respectively provided with the lock nut and the drain valve piston, and the structure of the flash-off valve corresponds to the structure of the drain valve.

9. A new type of air dryer which is easy to use as claimed in claim 8, characterized in that, ​ 10. A new type of air dryer for easy use as claimed in claim 9, wherein, The flash valve further comprises a drain sealing pad, the drain sealing pad and the flash connecting rod constitute a shuttle valve, the valve port is between the drain sealing pads, and the left side of the shuttle valve is closed under the action of the drain valve spring; when the shuttle valve receives a pressure signal, the pressure air overcomes the spring force to make the right side of the shuttle valve closed, and the left and right sides of the shuttle valve are closed to complete the instantaneous drain process of the flash valve.

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