Compressed air dryer and adsorbent core replacement system thereof

Abstract

The invention relates to the technical field of dryers, in particular to a compressed air dryer and an adsorbent core replacement system thereof.The compressed air dryer comprises a barrel, a mounting seat and screw tubes, the mounting seat is connected with the bottom ends of the two screw tubes, the inner walls of the top ends of the screw tubes are in threaded connection with a threaded part of the side wall of the bottom of the barrel, and the barrel is filled with a drying agent; and the device is in threaded connection with the barrel body by arranging the solenoid, so that the barrel body is convenient to disassemble and assemble, the replacement efficiency of the drying agent is further improved, and the difficulty of overhauling and maintaining the device is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of dryers, and particularly relates to a compressed air dryer and an adsorbent core replacement system thereof. Background Art

[0002] Compressed air dryers are widely used in various industries. They can dry compressed air. At the same time, due to the two adsorption cylinders provided in the device, one is used for drying and the other can be used for the reduction of the desiccant. The working efficiency is high and continuous. After the desiccant is used for a period of time, although the reduction is carried out, the drying efficiency will still decrease. At this time, the desiccant needs to be replaced. However, in the prior art, the replacement process of the storage tank for storing the desiccant is very cumbersome and the working efficiency is low. Summary of the Invention

[0003] The present invention provides a compressed air dryer and an adsorbent core replacement system thereof to solve the situation proposed in the background art.

[0004] To achieve the above object of the invention, the present invention provides the following technical solutions: A compressed air dryer, comprising: a cylinder body, a mounting seat and a screw tube. The bottom ends of two screw tubes are connected to the mounting seat, and the inner wall of the top end of the screw tube is threadedly connected to the threaded portion of the bottom side wall of the cylinder body. The cylinder body is filled with a desiccant.

[0005] Preferably, an annular groove is formed in the side wall of the cylinder body, and a sealing rubber ring is sleeved in the annular groove. The sealing rubber ring is in sealing cooperation with the inner wall of the screw tube.

[0006] Preferably, the end portions of two air inlets are formed in the bottom wall of the mounting seat, and each end portion of the air inlet is arranged towards the inner wall of a cylinder body. The other end of the air inlet is opened on the side wall of the mounting seat.

[0007] Preferably, the bottom ends of two exhaust pipes are connected to the bottom wall of the mounting seat, and the top end of each exhaust pipe is arranged towards the inner wall of a cylinder body. The side portion of the exhaust pipe is connected to the end portion of a rotary joint. A check valve element is connected in the rotary joint. The other end of the rotary joint is arranged far away from the side wall of the mounting seat. The end portion of an exhaust hole is connected to the side wall of each rotary joint. The other end of the exhaust hole is connected to an input end of a three-way reversing valve. The output end of the three-way reversing valve is connected to the end portion of a second exhaust hole. The other end of the second exhaust hole is opened on the side wall of the mounting seat.

[0008] Preferably, one end of a reduction hole is formed in each of the two side walls of the mounting seat. A reversing valve is connected to the middle of the reduction hole. The top wall of the reduction hole is communicated with the bottom openings of the two exhaust pipes. The top ends of two drain holes are formed in the bottom of the reduction hole. The other end of each drain hole is respectively opened on the two end faces of the mounting seat. The other end of the drain hole is connected to a discharge solenoid valve.

[0009] Preferably, an internal hexagon bolt plug is threadedly connected to each of the inner walls at both ends of the reduction hole.

[0010] Preferably, an adsorbent core replacement system, applicable to any one of the above-mentioned compressed air dryers, includes: an inner through pipe, a lower filter screen, an upper filter screen, and a guide air hole. The bottom end of the sleeve connected to the top wall of the cylinder body is inserted and matched with the top of the inner through pipe. The inner through pipe is sleeved with the lower filter screen and the upper filter screen from bottom to top. The lower filter screen, the upper filter screen, and the inner wall of the cylinder body form a storage cavity, and a desiccant is contained in the storage cavity. An annular groove two is opened on the side wall of the top of the inner through pipe, and a snap ring is clamped in the annular groove two. The bottom of the snap ring is in contact and cooperation with the top of the upper filter screen. The guide air hole is arranged between the sleeve and the upper filter screen, and the guide air hole is opened on the side wall of the inner through pipe.

[0011] Preferably, an annular groove three is opened on the inner wall of the cylinder body, and a snap ring two is connected in the annular groove three. The top of the snap ring two is in contact and cooperation with the top of the spring seat. The top of the spring seat is in contact and cooperation with the bottom of the lower filter screen through a spring. The side wall of the spring seat is in contact and cooperation with the inner wall of the cylinder body. An installation hole opened in the middle of the spring seat is inserted and matched with the inner through pipe.

[0012] Preferably, a plurality of through grooves are opened on the spring seat, and a plurality of baffles are arranged in a circumferential array on the spring seat. The side wall of the baffle is in contact and cooperation with the inner wall of the spring.

[0013] Preferably, the bottom of the inner through pipe is placed below the spring seat and is hermetically inserted and matched with the exhaust pipe.

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

[0015] In the solution of the present invention:

[0016] By arranging the screw pipe to be threadedly connected to the cylinder body, the disassembly and installation of the cylinder body are facilitated, thereby improving the replacement efficiency of the desiccant and reducing the difficulty of overhaul and maintenance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 is a sectional view of the cylinder body of the present invention;

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

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

[0021] Figure 5 is a schematic diagram of the relative position relationship between the lower filter screen and the upper filter screen of the present invention;

[0022] Figure 6 Schematic diagram of the opening position of the air guide hole of the present invention;

[0023] Figure 7 Schematic diagram of the opening position of the third annular groove of the present invention;

[0024] Figure 8 Schematic diagram of the opening position of the through groove of the present invention;

[0025] Figure 9 Cross-sectional view of the hollow rubber ring of the present invention;

[0026] Figure 10 Cross-sectional view of the upper pressure chamber of the present invention;

[0027] Figure 11 Cross-sectional view of the intubation tube of the present invention;

[0028] Figure 12 Schematic diagram of the sliding fit between the driving ring and the guide rod of the present invention;

[0029] Figure 13 Schematic diagram of the sawtooth structure of the present invention.

[0030] Wherein: cylinder body 1, mounting seat 2, screw tube 3, annular groove 4, sealing rubber ring 5, air inlet 6, exhaust pipe 7, adapter tube 8, one-way valve element 9, exhaust hole 10, reduction hole 11, discharge solenoid valve 12, hexagon socket head cap plug 13, inner through tube 14, lower filter screen 15, upper filter screen 16, air guide hole 17, storage cavity 18, third annular groove 19, second snap ring 20, spring seat 21, spring 22, mounting hole 23, through groove 24, baffle plate 25, retaining ring 26, hollow rubber ring 27, third mounting ring 28, push rod 29, fourth mounting ring 30, piston 31, upper pressure chamber 32, lower pressure chamber 33, second spring 34, third exhaust hole 35, fourth exhaust hole 36, guiding tube 37, pressure relief hole 38, intubation tube 39, second pressure relief hole 40, connecting rod 41, second connecting rod 42, third connecting rod 43, compression spring 44, chamfer 45, driving ring 46, guide rod 47, return spring 48, suction hole 49, second suction hole 50, storage cavity 51, sealing nut 52, sawtooth 53, guiding inclined surface 54, mounting rod 55, locking block 56, second return spring 57, second inclined surface 58. Detailed implementation manners

[0031] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not used to limit the present invention.

[0032] Embodiment 1: Refer to Figures 1 - 13, A compressed air dryer, comprising: a cylinder body 1, a mounting seat 2 and a spiral tube 3. The bottom ends of two spiral tubes 3 are connected to the mounting seat 2, and 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 body 1. A desiccant is contained in the cylinder body 1.

[0033] The principle and beneficial effects of the above solution are as follows:

[0034] When the device is in use, the desiccant in the cylinder body absorbs the moisture in the compressed air. When the desiccant reaches the adsorption limit and cannot be regenerated, the cylinder body 1 can be rotated on the spiral tube 3 of the mounting seat 2 and removed, and then the operator can replace the desiccant in the cylinder body 1;

[0035] When the desiccant in the cylinder body 1 is within the working life but cannot dry the compressed air, the cylinder body 1 can also be rotated and removed to check the inside.

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

[0037] By arranging the threaded connection between the spiral tube 3 and the cylinder body 1, the device is convenient for disassembling and installing the cylinder body 1, thereby improving the replacement efficiency of the desiccant and reducing the difficulty of overhauling and maintaining the device.

[0038] Embodiment 2: Refer to Figures 1 - 13 , An annular groove 4 is formed on the side wall of the cylinder body 1, and a sealing rubber ring 5 is sleeved in the annular groove 4. The sealing rubber ring 5 is in sealing cooperation with the inner wall of the spiral tube 3.

[0039] The principle and beneficial effects of the above solution are as follows:

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

[0041] Embodiment 3: Refer to Figures 1 - 13 , The ends of two air inlets 6 are opened on the bottom wall of the mounting seat 2, and the end of each air inlet 6 faces the inner wall of a cylinder body 1, and the other end of the air inlet 6 is opened on the side wall of the mounting seat 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 arranged towards the inner wall of a cylinder body 1. The side part of the exhaust pipe 7 is connected to the end part of a rotary joint pipe 8. A one-way valve element 9 is connected inside the rotary joint pipe 8. The other end of the rotary joint pipe 8 is arranged away from the side wall of the mounting base 2. The end part of an exhaust hole 10 is connected to the side wall of each rotary joint pipe 8. The other end of the exhaust hole 10 is connected to an input end of a three-way reversing valve. The output end of the three-way reversing valve is connected to the end part of the second exhaust hole. The other end of the second exhaust hole is opened on the side wall of the mounting base 2.

[0043] The principle and beneficial effects of the above solution are as follows:

[0044] When the device dries compressed air, the compressed air enters the interior of the cylinder body 1 through the air inlet 6. The moisture in the compressed air is absorbed by the desiccant to obtain dry compressed air. The dry gas enters the exhaust pipe 7. The three-way reversing valve is fixed inside the mounting base 2. When the two cylinder bodies 1 are working, according to the actual situation, one cylinder body 1 performs drying and the other cylinder body 1 performs desiccant reduction. At this time, the three-way reversing valve works to select and conduct the second exhaust hole and the exhaust hole 10 for the exhausted dry air. The dry air passes through the end part of the exhaust hole 10 connected to the side wall of the rotary joint pipe 8 and is finally discharged outside the device through the second exhaust hole. The three-way reversing valve discharges the dry gas in one cylinder body 1 outside the device according to actual requirements, and at the same time closes the other cylinder body 1 and reduces the desiccant therein, improving the efficiency of the cyclic operation of the device.

[0045] Example 4: Refer to Figures 1 - 13 One end of a reduction hole 11 is opened on each of the two side walls of the mounting base 2. A reversing valve is connected to the middle of the reduction hole 11. The top wall of the reduction hole 11 is communicated with the bottom openings of the two exhaust pipes 7. The top ends of two drain holes are opened at the bottom of the reduction hole 11. The other end of each drain hole is respectively 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 principle and beneficial effects of the above solution are as follows:

[0047] When the other cylinder body is being reduced, the reversing valve in the reduction hole 11 is opened to change the flow direction of the air in the reduction hole 11. Therefore, when most of the dry gas in the drying cylinder body 1 is recovered, another part of the dry gas enters the interior of the other exhaust pipe 7 through the reduction hole 11 to reduce the drying in the other cylinder body 1. When reducing, the moisture and air in the desiccant are discharged through the other air inlet 6. Another part of the moisture and air is recovered through the drain holes. When the desiccant is completely reduced, the discharge solenoid valve 12 is opened to discharge the residual moisture in the drain holes, preventing the residual moisture from entering the dryer when the device is drying and avoiding reducing the working efficiency of the desiccant during drying.

[0048] Example Five: Refer to Figures 1 - 13 , an internal hexagonal bolt plug 13 is threadedly connected to each of the inner walls at both ends of the reduction hole 11.

[0049] The principle and beneficial effects of the above solution are as follows:

[0050] An internal hexagonal bolt plug 13 is threadedly connected to each of the inner walls at both ends of the reduction hole 11. After the device stops, the internal hexagonal bolt plug 13 can be opened, and its interior can be repaired and maintained to prevent impurities from remaining in the reduction hole 11, thereby avoiding the blockage of the drain hole and the discharge solenoid valve 12.

[0051] Example Six: Refer to Figures 1 - 13 , an adsorbent core replacement system applicable to any one of the above-mentioned compressed air dryers, including: an inner through pipe 14, a lower filter screen 15, an upper filter screen 16, and a guide air hole 17. The bottom end of the sleeve connected to the top wall of the cylinder body 1 is inserted and fitted with the top of the inner through pipe 14. The inner through pipe 14 is sleeved with the lower filter screen 15 and the upper filter screen 16 from bottom to top. The lower filter screen 15, the upper filter screen 16, and the inner wall of the cylinder body 1 form a storage cavity 18. The storage cavity 18 is filled with a desiccant. An annular groove two is opened on the side wall of the top of the inner through pipe 14, and a snap ring is clamped in the annular groove two. The bottom of the snap ring is in contact and cooperation with the top of the upper filter screen 16. The guide air hole 17 is arranged between the sleeve and the upper filter screen 16, and the guide air hole 17 is opened on the side wall of the inner through pipe 14.

[0052] The principle and beneficial effects of the above solution are as follows:

[0053] The lower filter screen 15, the upper filter screen 16, and the inner wall of the cylinder body 1 form a storage cavity 18. Therefore, the storage cavity 18 can store and hold the desiccant. The setting of the lower filter screen 15 and the upper filter screen 16 can not only ensure the circulation of air and moisture, but also limit the position of the desiccant in the cylinder body 1 to prevent the desiccant from moving during operation; the annular groove two can be used to place the snap ring and use the snap ring to limit the upper filter screen 16; to further improve the stability of the inner through pipe 14 in the cylinder body 1, after the drying is completed and clamped, the inner through pipe 14 can be inserted into the sleeve to further prevent the desiccant from moving during operation and avoid vibration, improving the service life of the device; the circulation path of the compressed air during drying is as follows: first, through the air inlet 6, then through the lower filter screen 15, the desiccant, the upper filter screen 16, and then into the guide air hole 17. A cylindrical filter element can be set in the inner through pipe 14 for auxiliary filtration to further improve the filtration effect. The air passing through the guide air hole 17 then enters the inner through pipe 14 and finally enters the exhaust pipe 7 to collect the dried air uniformly.

[0054] Example Seven: Refer to Figures 1 - 13, a third annular groove 19 is formed in the inner wall of the cylinder body 1, a second snap ring 20 is connected in the third annular groove 19, the top of the second snap ring 20 is in contact and cooperation with the top of the spring seat 21, the top of the spring seat 21 is in contact and cooperation with the bottom of the lower filter screen 15 through the spring 22, the side wall of the spring seat 21 is in contact and cooperation with the inner wall of the cylinder body 1, and the mounting hole 23 formed in the middle of the spring seat 21 is in plug-in cooperation with the inner through pipe 14.

[0055] The principle and beneficial effects of the above solution are as follows:

[0056] To further improve the stability of the desiccant installation in the device, a third annular groove 19 is formed in the inner wall of the cylinder body 1 for installing the second snap ring 20. The top of the second snap ring 20 is in contact and cooperation with the bottom of the spring seat 21, and the top of the spring seat 21 is in contact and cooperation with the bottom of the lower filter screen 15 through the spring 22, thereby limiting the lower filter screen 15. At the same time, when the device starts to work, the compressed air suddenly added to the device has an impact force. Although the inner through pipe 14 and the upper filter screen 16 are limited by the snap ring, there is still a phenomenon that the inner through pipe 14 vibrates up and down in the cylinder body 1. Therefore, the spring 22 can also buffer the impact force of the desiccant during operation, further avoiding the up and down movement of the desiccant, avoiding the increase in the density of the desiccant, and avoiding the uneven distribution of water content inside the desiccant during filtration due to the reduction of air permeability; the plug-in cooperation between the mounting hole 23 and the inner through pipe 14 can prevent the bottom of the inner through pipe 14 from swinging circumferentially during the operation of the device, thereby avoiding noise during the operation of the device.

[0057] Example eight: Refer to Figures 1 - 13 , a plurality of through grooves 24 are formed in the spring seat 21, and a plurality of baffles 25 are arranged in a circumferential array on the spring seat 21. The side wall of the baffle 25 is in contact and cooperation with the inner wall of the spring 22.

[0058] The principle and beneficial effects of the above solution are as follows:

[0059] The through grooves 24 are provided to facilitate the passage of air and moisture, and at the same time reduce the weight of the spring seat 21. Therefore, when disassembling and installing the inner through pipe 14, the physical labor of the operator is reduced. Further, reducing the weight of the components can avoid the impact force of the device falling off on the nearby components, and ensure that the operator has enough time to give early warnings and safety measures in advance.

[0060] Example nine: Refer to Figures 1 - 13 , the bottom of the inner through pipe 14 is placed below the spring seat 21 and is in sealed plug-in cooperation with the exhaust pipe 7.

[0061] The principle and beneficial effects of the above solution are as follows:

[0062] The bottom of the inner connecting pipe 14 is in sealed plug-in fit with the exhaust pipe 7, which improves the efficiency of dry air transportation and the transportation efficiency of reduced water. Furthermore, after the desiccant in the device is reduced, it can ensure that there is no residual moisture in the cylinder body 1, avoid the desiccant from absorbing moisture again, and prevent the cylinder body 1 or other components from rusting.

[0063] Example Ten: Refer to Figures 1 - 13 , a retaining ring 26 is connected to the side wall of the cylinder body 1. The bottom of the retaining ring 26 is slidably connected to the top of a hollow rubber ring 27. One side wall of the hollow rubber ring 27 is connected to the side wall of the cylinder body 1, and the bottom wall of the hollow rubber ring 27 is in contact and cooperation with the top of the screw pipe 3.

[0064] The principle and beneficial effects of the above solution are as follows:

[0065] When the cylinder body 1 is screwed onto the screw pipe 3 in place, 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 rust to the threaded part, reducing the difficulty of disassembling the cylinder body 1; at the same time, the hollow rubber ring 27 can isolate external dust, prevent pollution at the connection between the cylinder body 1 and the screw pipe 3, and reduce the cleaning difficulty of the device.

[0066] Example Eleven: Refer to Figures 1 - 13 , the inner wall of an installation ring three 28 is connected to the bottom side wall of the cylinder body 1. The threaded part opened on the side wall of the installation ring three 28 is threadedly connected to the inner wall of the screw pipe 3. A plurality of pressure chambers are opened in the installation ring three 28. A plurality of push rods 29 are slidably sealed at the bottom of the installation ring three 28. The push rods 29 are arranged in one-to-one correspondence with the pressure chambers. The bottom end of the push rod 29 below the installation ring three 28 is in contact and cooperation with the top of an installation ring four 30. The side wall of the installation ring four 30 is connected to the inner wall of the screw pipe 3. The top of the push rod 29 placed in the pressure chamber is connected with a piston 31. The piston 31 is slidably sealed with the inner wall of the pressure chamber. The upper pressure chamber 32 is formed between the top of the piston 31 and the top wall of the pressure chamber. The lower pressure chamber 33 is formed between the bottom of the piston 31 and the pressure chamber. The top of the piston 31 is connected to the top wall of the upper pressure chamber 32 through a second spring 34. One end of an exhaust hole three 35 is opened on the top wall of the upper pressure chamber 32, and the other end of the exhaust hole three 35 is opened on the inner wall of the hollow rubber ring 27.

[0067] The principle and beneficial effects of the above solution are as follows:

[0068] When the cylinder body 1 is installed, the push rod 29 first enters the screw tube 3. As the cylinder body 1 rotates, the push rod 29 gradually moves towards the fourth mounting ring 30. When the push rod 29 contacts the fourth mounting ring 30, it is in a composite state of compressing towards the pressure chamber and simultaneously rubbing against the fourth 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 second spring 34 is compressed synchronously. The air stored in the upper pressure chamber 32 enters the hollow rubber ring 27 through the third exhaust hole 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 enhancing the protection effect on the threaded part; the inflation of the hollow rubber ring 27 can increase the buffering effect between the cylinder body 1 and the screw tube 3, absorb noise, and provide a certain degree of shock absorption ability; the setting of the hollow rubber ring 27 extends the connection length between the cylinder body 1 and the screw tube 3, improving the stability of the cylinder body 1 during operation.

[0069] Example Twelve: Refer to Figures 1 - 13 , a plurality of fourth exhaust holes 36 are opened on the bottom wall of the hollow rubber ring 27. The fourth exhaust holes 36 are arranged in sealing cooperation with the top of the screw tube 3. The end side walls of a plurality of guide tubes 37 are connected to the retaining ring 26. The ends of the guide tubes 37 outside the hollow rubber ring 27 are arranged away from the cylinder body 1. The guide tubes 37 are hermetically connected to the mounting holes on the side wall of the hollow rubber ring 27. The other ends of the guide tubes 37 inside the hollow rubber ring 27 are connected with a sealing disc;

[0070] The end of the inner wall of the guide tube 37 where the pressure relief hole 38 is opened, the other end of the pressure relief hole 38 is arranged towards the inner wall of the hollow rubber ring 27. A plug tube 39 is slidably connected inside the guide tube 37. The end of the plug tube 39 inside the guide tube 37 is connected with a second sealing disc. A second pressure relief hole 40 is opened on the plug tube 39. The second pressure relief hole 40 is arranged between the pressure relief hole 38 and the end of the guide tube 37. The other end of the plug tube 39 outside the guide tube 37 is connected with the unlocking assembly.

[0071] The principle and beneficial effects of the above solution are as follows:

[0072] When the third exhaust hole 35 starts to inflate the hollow rubber ring 27, the hollow rubber ring 27 will expand. To prevent over-inflation during inflation, a small amount of air can be discharged through the fourth exhaust hole 36 to prevent the internal pressure from being too high;

[0073] When discharging air, 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 at the same time avoid the iron filings from piercing the hollow rubber ring 27 after the screw tube 3 is disassembled and assembled multiple times, improving the safety of the device during use and also preventing sundries 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 it is in contact with the top of the screw tube 3 and rotates, most of the air output through the third exhaust hole 35 can be used to inflate the hollow rubber ring 27. When the hollow rubber ring 27 is inflated, its volume will move horizontally and longitudinally. That is, to prevent the synchronous movement of the guiding tube 37, the retaining ring 26 is used to fix it;

[0075] When the device needs to replace the desiccant and remove the cylinder body 1, since the top of the hollow rubber ring 27 is in contact with the retaining ring 26 and the bottom of the hollow rubber ring 27 is in contact with the top of the screw tube 3, if the cylinder body 1 is rotated at this time, it will be subject to great frictional resistance and is difficult to disassemble. Therefore, the air inside it needs to be discharged to reduce the volume and the frictional force between the cylinder body 1 and the screw tube 3. At this time, the insertion tube 39 is moved inward into the hollow rubber ring 27. The insertion tube 39 is in sliding fit with the guiding tube 37. After the second pressure relief hole 40 is communicated with the pressure relief hole 38, the inside of the hollow rubber ring 27 is communicated with the outside to exhaust air first, reduce its volume and reduce the frictional force between components. Subsequently, under the elastic force of the second spring 34 during reset, the piston 31 resets to suck the outside air into the upper pressure chamber 32. After the volume of the hollow rubber ring 27 is reduced, the cylinder body 1 can be removed. When the cylinder body 1 is rotated to a certain extent, the insertion tube 39 is reset in the guiding tube 37 to prepare for the next exhaust;

[0076] The other end of the guiding tube 37 located inside the hollow rubber ring 27 is connected with a sealing disc, and the end of the insertion tube 39 located inside the guiding tube 37 is connected with 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, and thus avoid the poor sealing effect caused by the reduction of the elasticity of the hollow rubber ring 27.

[0077] Example Thirteen: Refer to 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 driving ring 46, a guiding rod 47 and a reset spring 48. A plurality of guiding rods 47 are connected to the top of the retaining ring 26. The guiding rods 47 are in sliding connection with the driving ring 46. The bottom of the driving ring 46 is connected to the top of the retaining ring 26 through a reset spring 48. The inner wall bottom of the driving ring 46 is provided with an inclined surface. The side wall of 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 in sliding fit 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 a reset spring 48. The top of the second connecting rod 42 is connected to the bottom end of the third connecting rod 43. The top end of the third connecting rod 43 is provided with a chamfer 45. The chamfer 45 is arranged away from the cylinder body 1 and is arranged parallel to the lower part of the inclined surface.

[0078] The principle and beneficial effects of the above solution are:

[0079] When it is necessary to conduct the pressure relief hole two 40 and the pressure relief hole 38, only need to press the driving ring 46 downward. Under the sliding fit of the guide rod 47, the return spring 48 is compressed. The inclined surface of the driving ring 46 is in frictional fit with the chamfer 45. The connecting rod three 43, the connecting rod two 42 and the connecting rod 41 move towards the cylinder body 1, and the compression spring 44 is compressed. Then the insertion tube 39 moves towards the cylinder body 1 to exhaust air; when it is necessary to end the exhaust, only need to end the pressing of the driving ring 46. Under the elastic force of the return spring 48 being reset, the driving ring 46 is first reset. Under the elastic force of the compression spring 44 being reset, finally the insertion tube 39 is reset to end the exhaust; since the chamfer 45 is arranged parallel to the lower part of the inclined surface, when the device dries the air, even if there is vibration, it will not cause the contact between the driving ring 46 and the chamfer 45, and thus will not cause the sealing failure of the exhaust of the hollow rubber ring 27.

[0080] Example 14: Refer to Figures 1 - 13 At the end of the push rod 29 on the side wall where the suction hole 49 is opened, the suction hole 49 is placed below the mounting ring three 28. A check valve is provided in the suction hole 49. The other end of the suction hole 49 is placed in the lower pressure chamber 33. At the end of the inner wall of the lower pressure chamber 33 where the suction hole two 50 is opened, a check valve two is connected in the suction hole two 50. The other end of the suction hole two 50 is connected to the inner wall of the storage chamber 51. The storage chamber 51 is opened in the side wall of the cylinder body 1. A discharge pipe is connected to the inner wall of the storage chamber 51. The end of the discharge pipe placed below the mounting ring three 28 is threadedly connected with a sealing nut 52.

[0081] The principle and beneficial effects of the above solution are as follows:

[0082] When the push rod 29 moves upward, the volume of the lower pressure chamber 33 increases. To prevent the piston 31 from not working, at this time the check valve in the suction hole 49 opens and the one in the suction hole two 50 closes. The air and sludge in the screw tube 3 can enter the lower pressure chamber 33 through the suction hole 49. At this time, the sludge, dust and metal debris can be sucked to prevent the above sundries from damaging the threaded part and the inner wall of the screw tube 3; when the pressure at the bottom of the push rod 29 disappears, since the upper pressure chamber 32 is communicated with the outside through the exhaust hole three 35, under the elastic force of the spring two 34 being reset, the piston 31 moves downward synchronously. At this time, the check valve closes and the check valve two opens. The sucked sundries enter the storage chamber through the suction hole two. When the sundries are collected to a certain extent, the sealing nut 52 on the discharge pipe can be opened for discharge, or the inside can be cleaned by injecting cleaning liquid. Further, since the lower pressure chamber 33 sucks sundries 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: Refer to Figures 1 - 13, a plurality of saw teeth 53 are circumferentially arranged at the top of the solenoid 3, the guiding inclined surface 54 at one end of the saw teeth 53 is arranged towards the clockwise direction of the rotation of the cylinder 1, the other end of the saw teeth 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 chute of the locking block 56, the bottom wall of the longitudinal chute is connected to the mounting rod 55 through a second return spring 57, the inclined surface two 58 at the bottom of the locking block 56 is in contact and cooperation with the guiding inclined surface 54 of a saw tooth, and the side wall of the locking block 56 is in contact and cooperation with the vertical surface of another saw tooth 53.

[0084] The principle and beneficial effects of the above solution are as follows:

[0085] When the cylinder 1 rotates clockwise, its height relative to the solenoid 3 gradually decreases. When the rotation is about to end, the inclined surface two 58 at the bottom of the locking block 56 begins to slide and cooperate with the guiding inclined surface 54 of the saw teeth 53. When the cylinder 1 rotates in place, under the sliding cooperation of the longitudinal chute and the mounting rod 55, the locking block 56 moves upward relative to the mounting rod 55, and the second return spring 57 is compressed. At this time, the side wall of the locking block 56 is in contact and cooperation with the vertical surface of another saw tooth 53, that is, the device will not rotate counterclockwise after working, and the cylinder 1 will not become loose during work; when the cylinder 1 needs to be removed, only need to move the locking block 56 upward so that the side wall of the locking block 56 ends the contact and cooperation with the vertical surface of another saw tooth 53.

[0086] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. A compressed air dryer, characterized in that, Including: A cylinder body (1), a mounting seat (2) and a screw pipe (3). The bottom ends of two screw pipes (3) are connected to the mounting seat (2). The inner wall of the top end of the screw pipe (3) is threadedly connected to the threaded part of the bottom side wall of the cylinder body (1). A desiccant is contained in the cylinder body (1).

2. The compressed air dryer according to claim 1, characterized in that, An annular groove (4) is formed in the side wall of the cylinder body (1), and a sealing rubber ring (5) is sleeved in the annular groove (4). The sealing rubber ring (5) is in sealing cooperation with the inner wall of the screw pipe (3).

3. The compressed air dryer according to claim 2, characterized in that, The end parts of two air inlets (6) are formed in the bottom wall of the mounting seat (2). The end part of each air inlet (6) is arranged towards the inner wall of a cylinder body (1), and the other end of the air inlet (6) is formed in the side wall of the mounting seat (2).

4. The compressed air dryer according to claim 3, characterized in that, The bottom ends of two exhaust pipes (7) are connected to the bottom wall of the mounting seat (2). The top end of each exhaust pipe (7) is arranged towards the inner wall of a cylinder body (1). The side part of the exhaust pipe (7) is connected to the end part of a transfer pipe (8). A one-way valve element (9) is connected in the transfer pipe (8). The other end of the transfer pipe (8) is arranged away from the side wall of the mounting seat (2). The end part of an exhaust hole (10) is connected to the side wall of each transfer pipe (8). The other end of the exhaust hole (10) is connected to an input end of a three-way reversing valve, and the output end of the three-way reversing valve is connected to the end part of a second exhaust hole. The other end of the second exhaust hole is formed in the side wall of the mounting seat (2).

5. The compressed air dryer according to claim 4, characterized in that, One end of a reduction hole (11) is formed in each of the two side walls at both ends of the mounting seat (2). A reversing valve is connected to the middle of the reduction hole (11). The top wall of the reduction hole (11) is communicated with the bottom openings of the two exhaust pipes (7). The top ends of two drain holes are formed in the bottom of the reduction hole (11). The other end of each drain hole is respectively formed in the two end faces of the mounting seat (2), and the other end of the drain hole is connected to a discharge solenoid valve (12).

6. The compressed air dryer according to claim 5, wherein An internal hexagonal bolt plug (13) is threadedly connected to each of the inner walls at both ends of the reduction hole (11).

7. An adsorbent core replacement system, applicable to a compressed air dryer according to any one of claims 1-4, characterized in that, Including: An inner through pipe (14), a lower filter screen (15), an upper filter screen (16) and an air guide hole (17). The bottom end of the sleeve connected to the top wall of the cylinder body (1) is in plug-in fit with the top of the inner through pipe (14). The lower filter screen (15) and the upper filter screen (16) are sleeved on the inner through pipe (14) from bottom to top. The lower filter screen (15), the upper filter screen (16) and the inner wall of the cylinder body (1) form a storage cavity (18). A desiccant is contained in the storage cavity (18). An annular groove two is formed in the side wall of the top of the inner through pipe (14), and a snap spring is clamped in the annular groove two. The bottom of the snap spring is in contact and cooperation with the top of the upper filter screen (16). The air guide hole (17) is arranged between the sleeve and the upper filter screen (16), and the air guide hole (17) is formed in the side wall of the inner through pipe (14).

8. The adsorbent core replacement system according to claim 7, wherein, An annular groove three (19) is formed in the inner wall of the cylinder body (1), and a second snap spring (20) is connected in the annular groove three (19). The top of the second snap spring (20) is in contact and cooperation with the top of a spring seat (21). The top of the spring seat (21) is in contact and cooperation with the bottom of the lower filter screen (15) through a spring (22). The side wall of the spring seat (21) is in contact and cooperation with the inner wall of the cylinder body (1). An installation hole (23) formed in the middle of the spring seat (21) is in plug-in fit with the inner through pipe (14).

9. The adsorbent core replacement system according to claim 8, wherein A plurality of through grooves (24) are formed in the upper part of the spring seat (21), and a plurality of baffles (25) are arranged in a circumferential array on the spring seat (21), and the side wall of the baffle (25) is in contact and fit with the inner wall of the spring (22).

10. The adsorbent core replacement system according to claim 9, characterized in that, The bottom of the inner through pipe (14) is placed below the spring seat (21) and is in sealed plug-in fit with the exhaust pipe (7).

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