A compressed air drier and a sorbent cartridge replacement system thereof

Abstract

The present application relates to the technical field of drying machine, and particularly relates to a compressed air drying machine and an adsorbent core replacement system thereof, comprising a cylinder, a mounting seat and a screw pipe, the bottom end of the screw pipe is connected to the mounting seat, the inner wall of the top end of the screw pipe is threadedly connected to the threaded part of the sidewall of the bottom of the cylinder, and the cylinder is internally provided with a drying agent, the device is threadedly connected to the cylinder through the screw pipe, the cylinder is convenient to disassemble and install, the replacement efficiency of the drying agent is improved, and the difficulty of the maintenance and repair of the device is reduced.

Description

Technical Field

[0001] This invention relates to the field of dryer technology, and in particular to a compressed air dryer and its adsorbent core replacement system. Background Technology

[0002] Compressed air dryers are widely used in various industries. They can dry compressed air. With two adsorption tanks inside the device, one for drying and the other for desiccant reduction, the working efficiency is high and continuous. After a period of use, the drying efficiency of the desiccant will still decrease even after reduction, and the desiccant needs to be replaced. However, the replacement process of the storage tank used to store the desiccant in the existing technology is very cumbersome and inefficient. Summary of the Invention

[0003] This invention provides a compressed air dryer and its adsorbent core replacement system to address the issues raised in the background art.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a compressed air dryer, comprising: a cylinder, a mounting base, and spiral tubes, wherein the mounting base is connected to the bottom ends of two spiral tubes, the inner wall of the top end of the spiral tubes is threadedly connected to the threaded portion of the bottom side wall of the cylinder, and the cylinder is filled with a desiccant.

[0005] Preferably, the side wall of the cylinder has an annular groove, and a sealing rubber ring is fitted inside the annular groove, with the sealing rubber ring sealingly engaging with the inner wall of the spiral tube.

[0006] Preferably, the bottom wall of the mounting base has two air inlets at one end, with each air inlet facing the inner wall of a cylinder, and the other end of the air inlet is located on the side wall of the mounting base.

[0007] Preferably, the bottom wall of the mounting base is connected to the bottom ends of two exhaust pipes, the top end of each exhaust pipe is set towards the inner wall of a cylinder, the side of the exhaust pipe is connected to the end of a transfer pipe, a one-way valve element is connected inside the transfer pipe, the other end of the transfer pipe is set away from the side wall of the mounting base, each transfer pipe has an exhaust hole connected to the end of its side wall, the other end of the exhaust hole is connected to one input end of a three-way reversing valve, the output end of the three-way reversing valve is connected to the second exhaust hole, and the other end of the second exhaust hole is opened on the side wall of the mounting base.

[0008] Preferably, each end of the mounting base has a restoration hole on one side wall, a reversing valve is connected to the middle of the restoration hole, the top wall of the restoration hole is connected to the bottom opening of the two exhaust pipes, the bottom of the restoration hole has two drain holes at the top, the other end of each drain hole is opened on the two end faces of the mounting base, and the other end of the drain hole is connected to a discharge solenoid valve.

[0009] Preferably, each end of the reduction hole is threaded with an internal hexagonal bolt plug.

[0010] Preferably, an adsorbent core replacement system, applicable to any of the above-described compressed air dryers, includes: an inner tube, a lower filter, an upper filter, and an air guide hole. The bottom end of the sleeve connected to the top wall of the cylinder is inserted into the top of the inner tube. The lower filter and the upper filter are fitted on the inner tube from bottom to top. The lower filter, the upper filter, and the inner wall of the cylinder form a receiving cavity containing desiccant. An annular groove is formed on the top side wall of the inner tube. A retaining spring is engaged in the annular groove. The bottom of the retaining spring contacts the top of the upper filter. The air guide hole is located between the sleeve and the upper filter and is located on the side wall of the inner tube.

[0011] Preferably, the inner wall of the cylinder has an annular groove three, and a retaining spring two is connected in the annular groove three. The top of the retaining spring two contacts and engages with the top of the spring seat. The top of the spring seat contacts and engages with the bottom of the lower filter screen through the spring. The side wall of the spring seat contacts and engages with the inner wall of the cylinder. The mounting hole in the middle of the spring seat is connected to the inner tube.

[0012] Preferably, the spring seat has multiple through slots, and multiple baffles are arranged in a circumferential array on the spring seat, with the sidewalls of the baffles contacting and engaging with the inner wall of the spring.

[0013] Preferably, the bottom of the inner tube is positioned below the spring seat and is sealed and plugged into the exhaust pipe.

[0014] The beneficial effects of this invention are as follows:

[0015] In the solution of this invention:

[0016] The device is designed with a screw tube that connects to the cylinder, which facilitates the disassembly and installation of the cylinder, thereby improving the efficiency of desiccant replacement and reducing the difficulty of device inspection and maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the cylindrical body of the present invention;

[0019] Figure 3 This is a schematic diagram showing the relative positional relationship between the annular groove and the sealing rubber ring of the present invention;

[0020] Figure 4 This is a cross-sectional view of the exhaust pipe of the present invention;

[0021] Figure 5 This is a schematic diagram showing the relative positional relationship between the lower and upper filter screens of the present invention;

[0022] Figure 6 This is a schematic diagram showing the location of the air guide hole in this invention;

[0023] Figure 7 This is a schematic diagram showing the three opening positions of the annular groove in this invention;

[0024] Figure 8 This is a schematic diagram showing the location of the through slot in this invention;

[0025] Figure 9 This is a cross-sectional view of the hollow rubber ring of the present invention;

[0026] Figure 10 This is a cross-sectional view of the upper pressure chamber of the present invention;

[0027] Figure 11 This is a cross-sectional view of the cannula of the present invention;

[0028] Figure 12 This is a schematic diagram of the sliding fit between the drive ring and the guide rod of the present invention;

[0029] Figure 13 This is a schematic diagram of the sawtooth structure of the present invention.

[0030] The components include: 1. Cylinder body; 2. Mounting base; 3. Helical tube; 4. Annular groove; 5. Sealing rubber ring; 6. Air inlet; 7. Exhaust pipe; 8. Adaptor pipe; 9. One-way valve element; 10. Exhaust hole; 11. Reduction hole; 12. Discharge solenoid valve; 13. Socket head bolt plug; 14. Inner through pipe; 15. Lower filter screen; 16. Upper filter screen; 17. Air guide hole; 18. Receiving cavity; 19. Annular groove three; 20. Snap ring two; 21. Spring seat; 22. Spring; 23. Mounting hole; 24. Through groove; 25. Baffle; 26. Retaining ring; 27. Hollow rubber ring; 28. Mounting ring three; 29. ​​Push rod; and 20. Installation. Ring 4 30, Piston 31, Upper Pressure Chamber 32, Lower Pressure Chamber 33, Spring 2 34, Exhaust Hole 35, Exhaust Hole 4 36, Guide Tube 37, Pressure Relief Hole 38, Insertion Tube 39, Pressure Relief Hole 2 40, Connecting Rod 41, Connecting Rod 2 42, Connecting Rod 3 43, Compression Spring 44, Chamfer 45, Drive Ring 46, Guide Rod 47, Return Spring 48, Suction Hole 49, Suction Hole 2 50, Receiving Chamber 51, Sealing Nut 52, Serrated Tooth 53, Guide Inclined Surface 54, Mounting Rod 55, Locking Block 56, Return Spring 2 57, Inclined Surface 2 58. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] Example 1: Reference Figures 1-13A compressed air dryer includes: a cylinder 1, a mounting base 2, and a spiral tube 3. The mounting base 2 is connected to the bottom ends of two spiral tubes 3. The inner wall of the top end of the spiral tube 3 is threadedly connected to the threaded part of the bottom side wall of the cylinder 1. The cylinder 1 is filled with desiccant.

[0033] The principles and beneficial effects of the above scheme are as follows:

[0034] When the device is in use, the desiccant inside the cylinder absorbs the moisture in the compressed air. When the desiccant reaches its adsorption limit and cannot be regenerated, the cylinder 1 can be rotated on the screw tube 3 of the mounting base 2 and removed. Then the operator can replace the desiccant inside the cylinder 1.

[0035] When the desiccant inside cylinder 1 is past its working life but can no longer dry compressed air, cylinder 1 can be rotated and removed for internal inspection.

[0036] The beneficial effects of the above scheme are as follows:

[0037] The device is connected to the cylinder 1 by a screw tube 3, which facilitates the disassembly and installation of the cylinder 1, thereby improving the efficiency of desiccant replacement and reducing the difficulty of device inspection and maintenance.

[0038] Example 2: Reference Figures 1-13 The side wall of the cylinder 1 has an annular groove 4, and a sealing rubber ring 5 is fitted inside the annular groove 4. The sealing rubber ring 5 is sealed to the inner wall of the spiral tube 3.

[0039] The principles and beneficial effects of the above scheme are as follows:

[0040] After the cylinder 1 and the spiral tube 3 are installed in place, the sealing rubber ring 5 set in the annular groove 4 contacts and engages with the inner wall of the spiral tube 3, thereby achieving a sealing fit between the spiral tube 3 and the cylinder 1, preventing leakage of high-pressure gas or moisture inside the device, and ensuring the safety of the device during operation.

[0041] Example 3: Reference Figures 1-13 The bottom wall of the mounting base 2 has two air inlets 6 at its ends. Each air inlet 6 is located facing the inner wall of a cylinder 1, and the other end of the air inlet 6 is located on the side wall of the mounting base 2.

[0042] The bottom wall of the mounting base 2 is connected to the bottom ends of two exhaust pipes 7. The top end of each exhaust pipe 7 is set towards the inner wall of a cylinder 1. The side of the exhaust pipe 7 is connected to the end of a transfer pipe 8. A one-way valve element 9 is connected inside the transfer pipe 8. The other end of the transfer pipe 8 is set away from the side wall of the mounting base 2. Each side wall of the transfer pipe 8 is connected to the end of an exhaust hole 10. The other end of the exhaust hole 10 is connected to one input end of a three-way reversing valve. The output end of the three-way reversing valve is connected to the other end of the exhaust hole 10. The other end of the exhaust hole 10 is opened on the side wall of the mounting base 2.

[0043] The principles and beneficial effects of the above scheme are as follows:

[0044] When the device dries compressed air, the compressed air enters the interior of the cylinder 1 through the air inlet 6. The moisture in the compressed air is absorbed by the desiccant to obtain dry compressed air. The dried gas enters the exhaust pipe 7. The three-way reversing valve is fixed inside the mounting base 2. When the two cylinders 1 are working, one cylinder 1 performs drying and the other cylinder 1 performs desiccant reduction according to the actual situation. At this time, the three-way reversing valve selects to connect the exhaust port 2 and the exhaust port 10 for drying air. The dried air passes through the end of the adapter pipe 8 connected to the exhaust port 10 and finally exits the device through the exhaust port 2. The three-way reversing valve discharges the dried gas in one cylinder 1 to the outside of the device according to actual needs, while closing the other cylinder 1 and reducing the desiccant inside, thus improving the efficiency of the device's cyclic operation.

[0045] Example 4: Reference Figures 1-13 The mounting base 2 has a restoration hole 11 at one end of each of its two side walls. A reversing valve is connected to the middle of the restoration hole 11. The top wall of the restoration hole 11 is connected to the bottom opening of the two exhaust pipes 7. The bottom of the restoration hole 11 has two drain holes at the top. The other end of each drain hole is opened on the two end faces of the mounting base 2. The other end of the drain hole is connected to a discharge solenoid valve 12.

[0046] The principles and beneficial effects of the above scheme are as follows:

[0047] When the other cylinder is undergoing reduction, the reversing valve in the reduction hole 11 opens, changing the airflow direction within the reduction hole 11. Therefore, while most of the drying gas in the drying cylinder 1 is recovered, another portion of the drying gas enters the interior of another exhaust pipe 7 through the reduction hole 11 to reduce the drying in the other cylinder 1. During reduction, the moisture and air in the desiccant are discharged through another air inlet 6, and the remaining moisture and air are recovered through the drain hole. After the desiccant is completely reduced, the discharge solenoid valve 12 is opened to discharge the residual moisture in the drain hole, preventing residual moisture from entering the dryer during drying and thus avoiding a reduction in the working efficiency of the desiccant during drying.

[0048] Example 5: Reference Figures 1-13 Each of the two ends of the reduction hole 11 is threaded with an internal hexagon bolt plug 13.

[0049] The principles and beneficial effects of the above scheme are as follows:

[0050] Each end of the reduction hole 11 has a threaded connection to an internal hexagon bolt plug 13. When the device is stopped, the internal hexagon bolt plug 13 can be opened and its interior can be inspected and maintained to prevent impurities from remaining in the reduction hole 11, thereby preventing the drain hole and the discharge solenoid valve 12 from being blocked.

[0051] Example 6: Reference Figures 1-13 An adsorbent core replacement system, applicable to any of the above-mentioned compressed air dryers, includes: an inner tube 14, a lower filter 15, an upper filter 16, and an air guide hole 17. The bottom end of the sleeve connected to the top wall of the cylinder 1 is inserted into the top of the inner tube 14. The lower filter 15 and the upper filter 16 are fitted on the inner tube 14 from bottom to top. The lower filter 15, the upper filter 16, and the inner wall of the cylinder 1 form a receiving cavity 18, which contains desiccant. An annular groove 2 is opened on the top side wall of the inner tube 14. A retaining spring is snapped into the annular groove 2. The bottom of the retaining spring contacts the top of the upper filter 16. The air guide hole 17 is located between the sleeve and the upper filter 16 and is opened on the side wall of the inner tube 14.

[0052] The principles and beneficial effects of the above scheme are as follows:

[0053] The lower filter 15, the upper filter 16, and the inner wall of the cylinder 1 form a receiving cavity 18, which can be used to collect and store the desiccant. The arrangement of the lower filter 15 and the upper filter 16 not only ensures the flow of air and moisture but also restricts the position of the desiccant within the cylinder 1, preventing it from shifting during operation. The annular groove 2 can be used to place the retaining spring and to limit the upper filter 16. To further improve the stability of the inner tube 14 within the cylinder 1, after the desiccant is clamped in place, the inner tube can be... 14 is inserted into the sleeve to further prevent the desiccant from moving around during operation, thus avoiding vibration and improving the service life of the device. The circulation path of the compressed air during drying is as follows: first, it passes through the air inlet 6, then through the lower filter screen 15, the desiccant, and the upper filter screen 16, and then enters the air guide hole 17. A cylindrical filter element can be installed in the inner tube 14 for auxiliary filtration to further improve the filtration effect. The air passing through the air guide hole 17 then enters the inner tube 14 and finally enters the exhaust pipe 7 for unified collection of the dried air.

[0054] Example 7: Reference Figures 1-13The inner wall of the cylinder 1 has an annular groove 19, and a retaining spring 20 is connected in the annular groove 19. The top of the retaining spring 20 contacts the top of the spring seat 21. The top of the spring seat 21 contacts the bottom of the lower filter screen 15 through the spring 22. The side wall of the spring seat 21 contacts the inner wall of the cylinder 1. The mounting hole 23 in the middle of the spring seat 21 is inserted into the inner tube 14.

[0055] The principles and beneficial effects of the above scheme are as follows:

[0056] To further improve the stability of the desiccant after installation, an annular groove 19 is made in the inner wall of the cylinder 1 for the installation of the retaining ring 20. The top of the retaining ring 20 contacts the bottom of the spring seat 21, and the top of the spring seat 21 contacts the bottom of the lower filter screen 15 through the spring 22, thereby limiting the position of the lower filter screen 15. At the same time, since the compressed air suddenly enters the device when it first starts working, it has an impact force. Although the retaining ring limits the position between the inner tube 14 and the upper filter screen 16, there is still some impact. The inner tube 14 vibrates up and down inside the cylinder 1. Therefore, the spring 22 can also buffer the impact force of the desiccant during operation, thereby further preventing the desiccant from moving up and down and preventing the density of the desiccant from increasing. This also prevents the air permeability from decreasing and causing uneven distribution of moisture content inside the desiccant during filtration. The insertion and connection between the mounting hole 23 and the inner tube 14 can prevent the bottom of the inner tube 14 from swinging around during operation, thereby preventing noise from the device during operation.

[0057] Example 8: Reference Figures 1-13 The spring seat 21 has multiple through slots 24, and multiple baffles 25 are arranged in a circumferential array on the spring seat 21. The side wall of the baffle 25 contacts and engages with the inner wall of the spring 22.

[0058] The principles and beneficial effects of the above scheme are as follows:

[0059] The passageway 24 facilitates the passage of air and moisture while reducing the weight of the spring seat 21. Therefore, it reduces the physical labor of the operator when disassembling and installing the inner passageway 14. Furthermore, reducing the weight of the components can prevent the device from falling off and impacting nearby components, and ensure that the operator has enough time to make early warnings and take safety measures.

[0060] Example 9: Reference Figures 1-13 The bottom of the inner tube 14 is positioned below the spring seat 21 and is sealed and plugged into the exhaust pipe 7.

[0061] The principles and beneficial effects of the above scheme are as follows:

[0062] The bottom of the inner tube 14 is sealed and plugged into the exhaust pipe 7, which improves the efficiency of dry air delivery and the efficiency of reducing water delivery. As a result, after the desiccant in the device is reduced, it can ensure that no moisture remains in the cylinder 1, avoid the desiccant absorbing moisture again, and prevent the cylinder 1 or other parts from rusting.

[0063] Example 10: Reference Figures 1-13 A retaining ring 26 is connected to the side wall of the cylinder 1. The bottom of the retaining ring 26 is slidably connected to the top of the hollow rubber ring 27. One side wall of the hollow rubber ring 27 is connected to the side wall of the cylinder 1, and the bottom wall of the hollow rubber ring 27 is in contact with the top of the spiral tube 3.

[0064] The principles and beneficial effects of the above scheme are as follows:

[0065] After the cylinder 1 is threaded into the screw tube 3, the hollow rubber ring 27 can seal the threaded connection between the two. Therefore, when the device is working, water and dust in the environment will not cause corrosion to the threaded part, reducing the difficulty of disassembling the cylinder 1. At the same time, the hollow rubber ring 27 can isolate external dust, avoid contamination at the connection between the cylinder 1 and the screw tube 3, and reduce the difficulty of cleaning the device.

[0066] Example 11: Reference Figures 1-13 The bottom side wall of the cylinder 1 is connected to the inner wall of the mounting ring 28. The threaded part on the side wall of the mounting ring 28 is threaded to the inner wall of the spiral tube 3. The mounting ring 28 has multiple pressure chambers. The bottom of the mounting ring 28 is slidably sealed with multiple push rods 29. Each push rod 29 is corresponding to a pressure chamber. The bottom end of the push rod 29 below the mounting ring 28 contacts the top of the mounting ring 30. The side wall of the mounting ring 30 is connected to the inner wall of the spiral tube 3. The top of the push rod 29 in the pressure chamber is connected to a piston 31. The piston 31 is slidably sealed to the inner wall of the pressure chamber. The top of the piston 31 and the pressure chamber form an upper pressure chamber 32. The bottom of the piston 31 and the pressure chamber form a lower pressure chamber 33. The top of the piston 31 and the top wall of the upper pressure chamber 32 are connected by a spring 34. The top wall of the upper pressure chamber 32 has one end of an exhaust hole 35. The other end of the exhaust hole 35 is opened on the inner wall of the hollow rubber ring 27.

[0067] The principles and beneficial effects of the above scheme are as follows:

[0068] When the cylinder 1 is installed, the push rod 29 first enters the solenoid 3. As the cylinder 1 rotates, the push rod 29 gradually moves towards the mounting ring 30. When the push rod 29 contacts the mounting ring 30, it is in a combined state of compression into the pressure chamber and simultaneous friction with the mounting ring 30. As the push rod 29 moves upward, the piston 31 moves upward. At this time, the volume of the lower pressure chamber 33 increases, and the volume of the upper pressure chamber 32 decreases. When the volume of the upper pressure chamber 32 decreases, the spring 34 is simultaneously compressed, and the spring 34 stored in the upper pressure chamber 32... Air enters the hollow rubber ring 27 through the exhaust port 35, causing it to expand to a certain extent. The expanded hollow rubber ring 27 can better seal the inside of the screw tube 3 with the top of the screw tube 3, further increasing the protection effect on the threaded part. The inflation of the hollow rubber ring 27 can increase the buffering effect between the cylinder 1 and the screw tube 3, absorb noise, and provide a certain degree of shock absorption. The setting of the hollow rubber ring 27 extends the connection length between the cylinder 1 and the screw tube 3, improving the stability of the cylinder 1 during operation.

[0069] Example 12: Reference Figures 1-13 The hollow rubber ring 27 has multiple vent holes 36 on its bottom wall. The vent holes 36 are sealed to the top of the spiral tube 3. The retaining ring 26 is connected to the end sidewall of multiple guide tubes 37. The end of the guide tube 37 outside the hollow rubber ring 27 is away from the cylinder 1. The guide tube 37 is sealed to the mounting hole on the sidewall of the hollow rubber ring 27. The other end of the guide tube 37 inside the hollow rubber ring 27 is connected to a sealing plate.

[0070] The inner wall of the guide tube 37 has a pressure relief hole 38 at one end, and the other end of the pressure relief hole 38 is set towards the inner wall of the hollow rubber ring 27. An insertion tube 39 is slidably connected inside the guide tube 37. The end of the insertion tube 39 placed inside the guide tube 37 is connected to a sealing disc 2. A pressure relief hole 2 40 is opened on the insertion tube 39. The pressure relief hole 2 40 is set between the pressure relief hole 38 and the end of the guide tube 37. The other end of the insertion tube 39 placed outside the guide tube 37 is connected to the unlocking component.

[0071] The principles and beneficial effects of the above scheme are as follows:

[0072] When the hollow rubber ring 27 is inflated by the vent hole 35, the hollow rubber ring 27 will expand. To prevent over-inflation, a small amount of air can be released through the vent hole 46 to prevent excessive internal pressure.

[0073] When air is discharged, the hollow rubber ring 27 is in a rotating state, which can thoroughly clean the top of the screw tube 3, prevent dust accumulation, and prevent iron filings from puncturing the hollow rubber ring 27 after repeated disassembly and assembly of the screw tube 3, thus improving the safety of the device during use. It can also prevent foreign objects from entering the threaded part of the screw tube 3.

[0074] To ensure the elasticity and sealing effect of the hollow rubber ring 27, when the hollow rubber ring 27 contacts and rotates with the top of the screw tube 3, most of the air output through the exhaust hole 35 can inflate the hollow rubber ring 27. When the hollow rubber ring 27 is inflated, its volume will move laterally and longitudinally. That is, to prevent the guide tube 37 from moving synchronously, the retaining ring 26 is used to fix it.

[0075] When the device needs to replace the desiccant and remove the cylinder 1, the top of the hollow rubber ring 27 contacts the retaining ring 26, and the bottom of the hollow rubber ring 27 contacts the top of the solenoid 3. If the cylinder 1 is rotated at this time, it will be subject to great frictional resistance and disassembly will be difficult. Therefore, it is necessary to discharge the air inside to reduce the volume and reduce the friction between the cylinder 1 and the solenoid 3. At this time, the insertion tube 39 is moved into the hollow rubber ring 27. The insertion tube 39 slides with the guide tube 37. After the pressure relief hole 40 and the pressure relief hole 38 are connected, the inside of the hollow rubber ring 27 is connected to the outside to discharge air first, reduce its volume and reduce the friction between the components. Then, under the elastic force of the spring 34 returning to its original position, the piston 31 returns to its original position and draws the outside air into the upper pressure chamber 32. After the volume of the hollow rubber ring 27 is reduced, the cylinder 1 can be removed. After the cylinder 1 is rotated to a certain extent, the insertion tube 39 is returned to its original position in the guide tube 37 to prepare for the next discharge.

[0076] The other end of the guide tube 37 inside the hollow rubber ring 27 is connected to a sealing disc, and the end of the insertion tube 39 inside the guide tube 37 is connected to a second sealing disc. The setting of the two sealing discs can prevent a large amount of air leakage when the hollow rubber ring 27 is inflated, thereby avoiding poor sealing effect caused by the reduction of elasticity of the hollow rubber ring 27.

[0077] Example 13: Reference Figures 1-13 The unlocking assembly includes: a connecting rod 41, a second connecting rod 42, a third connecting rod 43, a compression spring 44, a chamfer 45, a drive ring 46, a guide rod 47, and a return spring 48. Multiple guide rods 47 are connected to the top of the retaining ring 26, and the guide rods 47 are slidably connected to the drive ring 46. The bottom of the drive ring 46 is connected to the top of the retaining ring 26 via the return spring 48. The bottom of the inner wall of the drive ring 46 has a slope. The other end of the insertion tube 39 is connected to the end of the connecting rod 41. The other end of the connecting rod 41 is connected to the end of the second connecting rod 42. The second connecting rod 42 is slidably engaged with the top of the retaining ring 26. The other end of the second connecting rod 42 is connected to the retaining ring 26 via the return spring 48. The top of the second connecting rod 42 is connected to the bottom of the third connecting rod 43. The top of the third connecting rod 43 has a chamfer 45, which is positioned away from the cylinder 1 and parallel to the bottom of the slope.

[0078] The principles and beneficial effects of the above scheme are as follows:

[0079] When it is necessary to connect the pressure relief hole 40 and the pressure relief hole 38, simply press the drive ring 46 downwards. Under the sliding engagement of the guide rod 47, the return spring 48 is compressed, and the inclined surface of the drive ring 46 rubs against the chamfer 45. The connecting rod 43, connecting rod 42, and connecting rod 41 move towards the cylinder 1, and the compression spring 44 is compressed. Consequently, the insertion tube 39 moves towards the cylinder 1 to exhaust air. When it is necessary to end the exhaust, simply stop pressing the drive ring 46. Under the elastic force of the return spring 48 being reset, the drive ring 46 first resets, and under the elastic force of the compression spring 44 being reset, the insertion tube 39 finally resets to end the exhaust. Since the chamfer 45 is set parallel to the bottom of the inclined surface, even if vibration occurs during the air drying process, the drive ring 46 will not come into contact with the chamfer 45, thus preventing the hollow rubber ring 27 from failing to seal during exhaust.

[0080] Example 14: Reference Figures 1-13 The push rod 29 has a suction hole 49 on its side wall. The suction hole 49 is located below the mounting ring 28. A one-way valve is installed inside the suction hole 49. The other end of the suction hole 49 is located in the lower pressure chamber 33. The lower pressure chamber 33 has a suction hole 50 on its inner wall. A one-way valve is connected inside the suction hole 50. The other end of the suction hole 50 is connected to the inner wall of the receiving chamber 51. The receiving chamber 51 is located inside the side wall of the cylinder 1. A discharge pipe is connected to the inner wall of the receiving chamber 51. The end of the discharge pipe located below the mounting ring 28 is threaded with a sealing nut 52.

[0081] The principles and beneficial effects of the above scheme are as follows:

[0082] When push rod 29 moves upward, the volume of lower pressure chamber 33 increases. To prevent piston 31 from failing to work, the one-way valve in suction port 49 opens and suction port 50 closes. Air and sludge in the solenoid 3 can enter lower pressure chamber 33 through suction port 49. At this time, sludge, dust, and metal shavings can be suctioned to prevent these impurities from damaging the threaded part and the inner wall of the solenoid 3. When the pressure at the bottom of push rod 29 disappears, the upper pressure chamber 32 is connected to the outside through exhaust port 35. Under the elastic force of the spring 34 returning to its original position, the piston 31 moves downward synchronously. At this time, the one-way valve is closed and the one-way valve 2 is opened. The sucked-up debris enters the collection chamber through the suction hole 2. When the debris is collected to a certain extent, the sealing nut 52 on the discharge pipe can be opened for discharge. Alternatively, the interior can be cleaned by injecting cleaning fluid. Furthermore, since the lower pressure chamber 33 sucks up debris for a long time, it can be cleaned by injecting cleaning agent into the suction hole 49 and pulling the push rod 29.

[0083] Example 15: Reference Figures 1-13The top of the spiral tube 3 is provided with a plurality of serrations 53 in a circumferential manner. The guide slope 54 at one end of the serration 53 is set in the clockwise direction of the rotation of the cylinder 1. The other end of the serration 53 is provided with a vertical surface. The side wall of the retaining ring 26 is connected to the end of the mounting rod 55. The mounting rod 55 is slidably connected to the longitudinal groove of the locking block 56. The bottom wall of the longitudinal groove is connected to the mounting rod 55 through a second reset spring 57. The second slope 58 at the bottom of the locking block 56 contacts and engages with the guide slope 54 of one serration. The side wall of the locking block 56 contacts and engages with the vertical surface of another serration 53.

[0084] The principles and beneficial effects of the above scheme are as follows:

[0085] As the cylinder 1 rotates clockwise, its height relative to the solenoid 3 gradually decreases. Just before the rotation ends, the inclined surface 58 at the bottom of the locking block 56 begins to slide into contact with the guide inclined surface 54 of the sawtooth 53. Once the cylinder 1 has rotated to its final position, the locking block 56 moves upward relative to the mounting rod 55 under the sliding contact of the longitudinal groove and the mounting rod 55. The return spring 57 is compressed, and at this point, the side wall of the locking block 56 contacts the vertical surface of the other sawtooth 53. This means the device will not rotate counterclockwise after operation, and the cylinder 1 will not loosen during operation. To remove the cylinder 1, simply move the locking block 56 upward until its side wall stops contacting the vertical surface of the other sawtooth 53.

[0086] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A compressed air dryer, characterized in that, include: The cylinder (1), mounting base (2) and screw tube (3) are connected to the bottom ends of two screw tubes (3), the inner wall of the top end of the screw tube (3) is threadedly connected to the threaded part of the bottom side wall of the cylinder (1), and the cylinder (1) is filled with desiccant. The side wall of the cylinder (1) has an annular groove (4), and a sealing rubber ring (5) is fitted inside the annular groove (4). The sealing rubber ring (5) is sealed to the inner wall of the spiral tube (3). The bottom wall of the mounting base (2) has two air inlets (6) at the ends. Each air inlet (6) is located facing the inner wall of a cylinder (1). The other end of the air inlet (6) is located on the side wall of the mounting base (2). The bottom wall of the mounting base (2) is connected to the bottom ends of two exhaust pipes (7). The top end of each exhaust pipe (7) is set towards the inner wall of a cylinder (1). The side of the exhaust pipe (7) is connected to the end of the adapter pipe (8). The adapter pipe (8) is connected to a one-way valve element (9). The other end of the adapter pipe (8) is set away from the side wall of the mounting base (2). The side wall of each adapter pipe (8) is connected to the end of an exhaust hole (10). The other end of the exhaust hole (10) is connected to one input end of a three-way reversing valve. The output end of the three-way reversing valve is connected to the second end of the exhaust hole. The other end of the second exhaust hole is opened on the side wall of the mounting base (2). A retaining ring (26) is connected to the side wall of the cylinder (1). The bottom of the retaining ring (26) is slidably connected to the top of the hollow rubber ring (27). One side wall of the hollow rubber ring (27) is connected to the side wall of the cylinder (1), and the bottom wall of the hollow rubber ring (27) is in contact with the top of the spiral tube (3). The bottom side wall of the cylinder (1) is connected to the inner wall of the mounting ring three (28). The threaded part on the side wall of the mounting ring three (28) is threaded to the inner wall of the screw tube (3). The mounting ring three (28) has multiple pressure chambers. The bottom of the mounting ring three (28) is slidably sealed with multiple push rods (29). The push rods (29) are arranged one-to-one with the pressure chambers. The bottom end of the push rod (29) below the mounting ring three (28) contacts and engages with the top of the mounting ring four (30). The side wall of the mounting ring four (30) is connected to the inner wall of the screw tube (3). 29) A piston (31) is connected to the top of the pressure chamber. The piston (31) slides and seals with the inner wall of the pressure chamber. The top of the piston (31) and the pressure chamber form an upper pressure chamber (32). The bottom of the piston (31) and the pressure chamber form a lower pressure chamber (33). The top of the piston (31) and the top wall of the upper pressure chamber (32) are connected by a spring (34). One end of the upper pressure chamber (32) has an exhaust hole (35). The other end of the exhaust hole (35) is opened on the inner wall of the hollow rubber ring (27). The hollow rubber ring (27) has multiple vent holes (36) on its bottom wall. The vent holes (36) are sealed to the top of the screw tube (3). The end sidewalls of multiple guide tubes (37) are connected to the retaining ring (26). The end of the guide tube (37) placed outside the hollow rubber ring (27) is away from the cylinder (1). The guide tube (37) is sealed to the mounting hole of the sidewall of the hollow rubber ring (27). The other end of the guide tube (37) placed inside the hollow rubber ring (27) is connected to a sealing plate. The guide tube (37) has a pressure relief hole (38) at one end on its inner wall. The other end of the pressure relief hole (38) faces the inner wall of the hollow rubber ring (27). An insertion tube (39) is slidably connected inside the guide tube (37). The end of the insertion tube (39) inside the guide tube (37) is connected to a sealing disc. A pressure relief hole (40) is opened on the insertion tube (39). The pressure relief hole (40) is located between the pressure relief hole (38) and the end of the guide tube (37). The other end of the insertion tube (39) outside the guide tube (37) is connected to the unlocking component. The unlocking assembly includes: a connecting rod (41), a second connecting rod (42), a third connecting rod (43), a compression spring (44), a chamfer (45), a drive ring (46), a guide rod (47), and a return spring (48). Multiple guide rods (47) are connected to the top of the retaining ring (26), and the guide rods (47) are slidably connected to the drive ring (46). The bottom of the drive ring (46) is connected to the top of the retaining ring (26) via the return spring (48). The bottom of the inner wall of the drive ring (46) is provided with a slope. The insertion tube (39) The other end of the side wall is connected to the end of the connecting rod (41), and the other end of the connecting rod (41) is connected to the end of the second connecting rod (42). The second connecting rod (42) slides with the top of the retaining ring (26). The other end of the second connecting rod (42) is connected to the retaining ring (26) through the return spring (48). The top of the second connecting rod (42) is connected to the bottom end of the third connecting rod (43). The top of the third connecting rod (43) is provided with a chamfer (45). The chamfer (45) is set away from the cylinder (1) and is set parallel to the bottom of the inclined surface.

2. The compressed air dryer according to claim 1, characterized in that, The mounting base (2) has a restoration hole (11) on each of its two side walls. A reversing valve is connected to the middle of the restoration hole (11). The top wall of the restoration hole (11) is connected to the bottom opening of the two exhaust pipes (7). The bottom of the restoration hole (11) has two drain holes at the top. The other end of each drain hole is opened on the two end faces of the mounting base (2). The other end of the drain hole is connected to a discharge solenoid valve (12).

3. A compressed air dryer according to claim 2, characterized in that, Each end of the reduction hole (11) has a threaded connection to an internal hexagonal bolt plug (13).

4. An adsorbent core replacement system, applicable to the compressed air dryer of claim 1, characterized in that, include: The inner tube (14), lower filter screen (15), upper filter screen (16) and air guide hole (17) are provided. The bottom end of the sleeve connected to the top wall of the cylinder (1) is inserted into the top of the inner tube (14). The lower filter screen (15) and upper filter screen (16) are installed on the inner tube (14) from bottom to top. The lower filter screen (15), upper filter screen (16) and inner wall of the cylinder (1) form a receiving cavity (18). The receiving cavity (18) is filled with desiccant. The top side wall of the inner tube (14) has an annular groove II. A retaining spring is snapped in the annular groove II. The bottom of the retaining spring contacts the top of the upper filter screen (16). The air guide hole (17) is set between the sleeve and the upper filter screen (16). The air guide hole (17) is opened on the side wall of the inner tube (14).

5. The adsorbent core replacement system according to claim 4, characterized in that, The inner wall of the cylinder (1) has an annular groove three (19), and a retaining spring two (20) is connected in the annular groove three (19). The top of the retaining spring two (20) is in contact with the top of the spring seat (21). The top of the spring seat (21) is in contact with the bottom of the lower filter screen (15) through the spring (22). The side wall of the spring seat (21) is in contact with the inner wall of the cylinder (1). The mounting hole (23) in the middle of the spring seat (21) is inserted into the inner tube (14).

6. The adsorbent core replacement system according to claim 5, characterized in that, The spring seat (21) has multiple through slots (24) on its upper surface, and multiple baffles (25) are arranged in a circumferential array on the spring seat (21). The side wall of the baffle (25) is in contact with the inner wall of the spring (22).

7. The adsorbent core replacement system according to claim 6, characterized in that, The bottom of the inner tube (14) is positioned below the spring seat (21) and is sealed and plugged into the exhaust pipe (7).

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