Backflushing device of air dryer

Abstract

The utility model belongs to the technical field of automobile accessories, particularly relates to a backflushing device of an air dryer, and solves the problems that the backflushing regeneration efficiency is not high, and a backflushing structure is difficult to be additionally arranged to greatly improve the backflushing efficiency. The backflushing device of the air dryer is used for being arranged between the dryer and a mounting seat and comprises a main body, a connecting structure used for connecting the dryer and the mounting seat is arranged on the main body, an air outlet channel is formed in the connecting structure, the main body is connected with a backflushing assembly, the backflushing assembly is communicated with the air outlet channel, and the air outlet channel is communicated with the backflushing assembly. The upper and lower ends of the air outlet channel are respectively communicated with the first air inlet and outlet of the dryer and the air inlet of the mounting seat. The device can be additionally arranged between the dryer and the mounting base, the backflushing assembly is matched with an original backflushing regeneration structure, the backflushing regeneration efficiency of the drying cylinder is greatly improved, the device can be matched with a conventional dryer and a conventional mounting base, and practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, and particularly relates to a recoil device for an air dryer. Background Art

[0002] In the pipeline of the air control system, the high-pressure air source is generated by the air compressor. When the air is compressed, the moisture content per unit volume of air in the pipeline will increase significantly. Moreover, since the reciprocating motion of the air compressor piston requires lubrication, the fine oil mist produced by the lubricating oil will inevitably be incorporated into the compressed air. In addition, tiny impurities in the atmosphere will inevitably be sucked into the air control pipeline. Once these moisture, oil mist and impurities accumulate in the pipeline of the air control system, they will cause problems such as corrosion of metal components, failure of the lubricating film, narrowing or even blockage of the passage, and failure of rubber components, which will eventually lead to the inability of various components in the air control system to guarantee normal working conditions during the service life. Therefore, in this type of pipeline system, it is necessary to connect an air dryer. In order to improve the use and treatment effect and service life of the air dryer, a recoil regeneration structure is often provided to blow out moisture, impurities, etc. in the air dryer in reverse.

[0003] At present, the recoil regeneration structure of most air dryers is arranged on the mounting base or the dryer, and the structure is relatively complex. In addition, the recoil regeneration efficiency is low, and it is difficult to significantly improve the recoil efficiency, which may affect the normal use of the air dryer. Utility Model Content

[0004] The utility model aims to solve the above problems in the prior art and proposes a recoil device for an air dryer.

[0005] In order to achieve the purpose of the innovative utility model, the following technical solutions can be used:

[0006] A recoil device for an air dryer, used to be arranged between the dryer and a mounting seat, comprises a main body, the main body is provided with a connecting structure for connecting the dryer and the mounting seat, an air outlet channel is provided in the connecting structure, a recoil assembly is connected to the main body, the recoil assembly and the air outlet channel are connected, and the upper and lower ends of the air outlet channel are respectively connected to the first air inlet and outlet holes of the dryer and the air inlet of the mounting seat.

[0007] The recoil device of the utility model is arranged between the dryer and the mounting seat through a connecting structure, and the mounting seat is a distributor assembly adapted to the dryer. The dryer and the mounting seat are both known common knowledge existing technologies. The main body of the recoil device is provided with an air outlet channel, which is connected to the first air inlet and outlet of the dryer and the air inlet of the mounting seat, and is used to transmit the air after drying in the drying cylinder to the mounting seat. A backflush assembly is provided on the main body, and the output end of the backflush assembly is connected to the air outlet channel, which is used to output backflush gas to the air outlet channel. The distributor assembly can close the air inlet in a timely manner. Naturally, the backflush gas will be reversely input into the first air inlet and outlet from the air outlet channel, so as to achieve the effect of backflush on the drying cylinder of the dryer to regenerate the dry particles. Moreover, the recoil device is arranged on the existing dryer, and the original dryer and / or the mounting seat generally have related structures for backflush. The recoil device is additionally provided with a backflush assembly, which can further improve the backflush efficiency and the regeneration rate of the dry particles. In the dryer that is not provided with the related structure for backflush, the recoil device can add a backflush regeneration function to the dryer.

[0008] In the above-mentioned recoil device of the air dryer, the connection structure includes a connecting screw, a screw mounting hole is provided through the middle of the main body, the connecting screw is rotatably connected to the screw mounting hole, and a sealing assembly is provided between the connecting screw and the screw mounting hole.

[0009] The connecting screw is rotatably connected to the screw mounting hole of the main body to achieve connection with the drying cylinder and the mounting seat. The sealing component is arranged between the connecting screw and the screw mounting hole to be a dynamic seal. Under the premise of not affecting the rotatability of the connecting screw, a good sealing effect is ensured.

[0010] In the above-mentioned recoil device of the air dryer, the upper end of the connecting screw is provided with an external thread for connecting to the base of the dryer and a vertically opened hexagonal hole, and the lower end is vertically provided with a threaded hole for connecting to the mounting base. The hexagonal hole and the threaded hole are connected to form the air outlet channel.

[0011] The upper end of the connecting screw is provided with an external thread, and the base of the dryer is screwed with the external thread through its internal thread. The lower end is provided with a threaded hole, and the threaded hole is screwed with the external thread of the base. The base, the connecting screw and the dryer are all connected by threads, which are detachable, stable and easy to disassemble. The hexagonal hole is used to tighten the connecting screw, and of course it can also be a triangular hole, a plum blossom hole, etc. Among them, the external thread on the upper end of the base, the internal thread on the lower end of the connecting screw, the external thread on the upper end of the connecting screw and the internal thread on the lower end of the dryer are all adapted to each other, and the inner diameter of the threaded hole is larger than the inner diameter of the hexagonal section.

[0012] In the above-mentioned recoil device of the air dryer, an annular limiting portion is provided on the outer wall of the connecting screw, and the lower end surface of the annular limiting portion is in contact with the upper end surface of the main body; the sealing assembly includes at least a first sealing ring and a second sealing ring, the first sealing ring is sealingly fitted between the outer wall of the connecting screw and the screw mounting hole, and the second sealing ring is sealingly fitted between the annular limiting portion and the upper end surface of the main body, or between the outer wall of the connecting screw and the screw mounting hole.

[0013] The annular limiting portion is arranged on the connecting screw and is in contact with the upper end of the main body for axial limiting. The sealing assembly is provided with at least two sealing rings, namely a first sealing ring and a second sealing ring, to ensure that a sealed intermediate cavity can be formed between the first sealing ring and the second sealing ring. The intermediate cavity is used as a connecting medium between the air outlet channel and the backblowing assembly.

[0014] As an optimization, an annular groove is provided on the outer side of the upper port of the screw mounting hole, and the annular limiting portion is just located in the annular groove and has a certain positioning effect. The second sealing ring can be arranged between the annular groove and the annular limiting portion.

[0015] As another optimization, a positioning protrusion is provided on the inner side of the lower port of the screw mounting hole, the inner diameter of the positioning protrusion is adapted to the outer diameter of the connecting screw, and the first sealing ring and the second sealing ring are both arranged above the positioning protrusion.

[0016] Among them, the specific configuration details of the first sealing ring and the second sealing ring are common knowledge and will not be elaborated in detail.

[0017] In the above-mentioned backflushing device of the air dryer, the outer diameter of the connecting screw is smaller than the inner diameter of the screw mounting hole, and an intermediate cavity is formed between the first sealing ring and the second sealing ring. The inner side of the intermediate cavity is connected to the air outlet channel through the first radial through hole on the connecting screw, and the outer side is connected to the backflushing assembly through the second radial through hole on the main body.

[0018] The connecting screw is smaller than the screw mounting hole to ensure that an intermediate cavity can be formed between them, which is used as a medium for connecting the air outlet channel and the backblowing assembly. The first radial through hole is radially arranged on the connecting screw, and its inner end is connected to the air outlet channel, and its outer end is connected to the intermediate cavity. The second radial through hole is radially arranged on the main body, and its inner end is connected to the intermediate cavity, and its outer end is connected to the backblowing assembly.

[0019] In the above-mentioned backflush device of the air dryer, the backflush assembly includes a connecting platform arranged on the outer wall of the main body, a backflush interface is provided on the connecting platform, the backflush interface is connected to the second radial through hole on the main body, and an air storage tank assembly or a first high-pressure gas generating assembly is connected to the backflush interface.

[0020] The connection platform is arranged outside the main body, and does not affect the connection between the dryer and the mounting seat on the upper and lower ends of the main body. The backflush interface on the connection platform is used to connect the gas storage tank assembly or the first high-pressure gas generating assembly. The gas storage tank assembly and the first high-pressure gas generating assembly are provided with corresponding one-way valves or switch valve assemblies, which are common knowledge and will not be elaborated in detail.

[0021] In the above-mentioned recoil device of the air dryer, a plurality of heat dissipation protrusions are evenly distributed circumferentially on the outer side wall of the main body, and the heat dissipation protrusions protrude radially and are arranged at intervals.

[0022] The heat dissipation convex teeth radially protrude from the outer wall of the main body, increasing the contact area between the main body and the outside world. The main body is attached to the lower end of the dryer, which helps to quickly dissipate the heat of the dryer and facilitates the full condensation of the hot and humid air in the dryer so that it can be quickly discharged during pressure-limited exhaust.

[0023] In the above-mentioned recoil device of the air dryer, the upper end of the main body and the first docking ring at the lower end of the dryer are tightly attached, a plurality of second air inlet and outlet holes are evenly distributed circumferentially on the main body, the upper ends of the second air inlet and outlet holes are connected to the third air inlet and outlet holes at the bottom of the dryer; the lower end of the main body is provided with a second docking ring for attaching to the base.

[0024] The main body and the first docking ring of the dryer are in close contact, forming a good seal between them. The second docking ring at the lower end of the main body is basically the same as the first docking ring and is used to dock with the mounting seat. The second air inlet and outlet are located between the third air inlet and outlet and the base, to ensure the smooth docking of the third air inlet and outlet of the dryer and the base.

[0025] In the above-mentioned recoil device of the air dryer, the dryer includes a base, a cylinder cover and a drying cylinder arranged between the base and the cylinder cover, a first air inlet and outlet hole is arranged through the center of the base, third air inlet and outlet holes are evenly distributed circumferentially on the base, a gas flow channel is formed between the third air inlet and outlet hole and the upper air hole of the drying cylinder, the gas flow channel is located between the drying cylinder and the cylinder cover, a lower air hole is arranged at the bottom of the drying cylinder, the lower air hole is connected to the air outlet channel through the first air inlet and outlet hole, and the first air inlet and outlet hole is screwed and fixed to the connecting screw of the connecting structure through its internal thread.

[0026] The drying cylinder of the dryer is arranged in the base and the cylinder cover. The gas to be treated of the mounting seat enters the gas flow channel from the third air inlet and outlet through the main body, and then enters the drying cylinder from the upper air hole of the drying cylinder to realize drying treatment. After the treatment is completed, it is output from the lower air hole at the lower end, and is output to the air inlet of the mounting seat through the first air inlet and outlet and the air outlet channel in turn, and is transported from the air inlet to the subsequent structure to realize the air drying treatment; during backblowing, the air inlet is closed, the backblowing component inputs the backblowing gas to the air outlet channel, and the backblowing gas is transported in the reverse direction to realize the regeneration of the dry particles in the drying cylinder.

[0027] In the above-mentioned recoil device of the air dryer, a recoil structure is provided on the dryer, and the recoil structure includes a recoil pipe penetrating through the cylinder cover of the dryer, the outer end of the recoil pipe is connected to the second high-pressure gas generating assembly, and the inner end is connected to the lower air hole of the drying cylinder of the dryer and the reflux chamber between the mounting seat.

[0028] As one of the embodiments, a recoil pipe is provided on the dryer. The recoil pipe passes through the cylinder cover and is connected to the second high-pressure gas generating component in the outside. The inner end of the recoil pipe is connected to the reflux chamber, which can also achieve a good recoil effect. With the synchronous cooperation of the backflush component, the backflush efficiency can be further increased and the regeneration rate of the dry particles can be improved.

[0029] Compared with the prior art, the utility model mainly has the following advantages:

[0030] 1. The recoil device is arranged between the dryer and the mounting seat through a connecting structure, an air outlet channel is arranged on the main body, a backflush assembly is arranged on the main body, the output end of the backflush assembly is connected to the air outlet channel, and is used to output backflush gas to the air outlet channel. The distributor assembly can close the air inlet in a timely manner. Naturally, the backflush gas will be input from the air outlet channel into the first air inlet and outlet holes in the reverse direction, so as to achieve the effect of backflush on the drying cylinder of the dryer to regenerate the dry particles. Moreover, the recoil device is arranged on the existing dryer, and the original dryer and / or mounting seat generally have related structures for backflush. The recoil device is additionally provided with a backflush assembly, which can further improve the backflush efficiency and the regeneration rate of the dry particles. In the dryer that is not provided with the related structure for backflush, the recoil device can add the backflush regeneration function to the dryer.

[0031] 2. An external thread is provided at the upper end of the connecting screw, and the base of the dryer is screwed to the external thread through its internal thread. A threaded hole is provided at the lower end, and the threaded hole is screwed to the external thread of the base. The base, the connecting screw and the dryer are all connected by threads, which is detachable, stable and easy to disassemble and assemble.

[0032] 3. The connecting screw is smaller than the screw mounting hole to ensure that an intermediate cavity can be formed between them, which is used as a medium for connecting the air outlet channel and the backblowing assembly. The first radial through hole is radially arranged on the connecting screw, and its inner end is connected to the air outlet channel, and its outer end is connected to the intermediate cavity. The second radial through hole is radially arranged on the main body, and its inner end is connected to the intermediate cavity, and its outer end is connected to the backblowing assembly.

[0033] 4. The heat dissipation teeth protrude radially from the outer wall of the main body, increasing the contact area between the main body and the outside world. The main body is in contact with the lower end of the dryer, which helps to quickly dissipate the heat of the dryer and facilitates the full condensation of the hot and humid air in the dryer, which can be quickly discharged when the pressure is limited.

[0034] 5. The dryer is provided with a recoil pipe, which passes through the cylinder cover and is connected to the second high-pressure gas generating component in the outside world. The inner end of the recoil pipe is connected to the reflux chamber, which can also achieve a good recoil effect. With the synchronous cooperation of the backflush component, the backflush efficiency can be further increased and the regeneration rate of the dry particles can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the cooperation between the recoil device and the dryer provided by the utility model;

[0036] Figure 2 It is a cross-sectional schematic diagram of the cooperation between the recoil device and the dryer provided by the utility model;

[0037] Figure 3 It is a structural schematic diagram of the recoil device provided by the utility model;

[0038] Figure 4 It is a top view schematic diagram of the recoil device provided by the utility model;

[0039] Figure 5 yes Figure 4 Schematic diagram of the cross section at AA in the middle.

[0040] In the figure, the main body 1, the screw mounting hole 11, the annular groove 12, the positioning convex ring 13, the heat dissipation convex teeth 14, the second docking ring 15, the second air inlet and outlet 16, the connecting structure 2, the air outlet channel 21, the connecting screw 22, the annular limit portion 23, the threaded hole 24, the hexagonal hole 25, the backflush component 3, the intermediate cavity 31, the first radial through hole 32, the second radial through hole 33, the connecting platform 34, the backflush interface 35, the sealing component 4, the first sealing ring 41, the second sealing ring 42, the dryer 5, the first air inlet and outlet 51, the first docking ring 52, the third air inlet and outlet 53, the base 54, the cylinder cover 55, the drying cylinder 56, the gas flow channel 57, the recoil structure 58, and the recoil pipe 59. DETAILED DESCRIPTION

[0041] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0042] Specific implementation examples Figure 1-5 As shown, the recoil device of the air dryer is used to be arranged between the dryer 5 and the mounting seat, and includes a main body 1. The main body 1 is provided with a connecting structure 2 for connecting the dryer 5 and the mounting seat, and an air outlet channel 21 is provided in the connecting structure 2. The main body 1 is connected with a backflush component 3, and the backflush component 3 is connected to the air outlet channel 21, and the upper and lower ends of the air outlet channel 21 are respectively connected to the first air inlet and outlet holes 51 of the dryer 5 and the air inlet of the mounting seat.

[0043] Specifically, the recoil device of the utility model is arranged between the dryer 5 and the mounting seat through the connecting structure 2. The mounting seat is a distributor assembly adapted to the dryer 5. An air outlet channel 21 is provided on the main body 1. The air outlet channel 21 connects the first air inlet and outlet holes 51 of the dryer 5 and the air inlet of the mounting seat, and is used to transmit the air after drying in the drying cylinder 56 to the mounting seat. A backflush assembly 3 is provided on the main body 1. The output end of the backflush assembly 3 is connected to the air outlet channel 21, and is used to output backflush gas to the air outlet channel 21. The distributor assembly can close the air inlet in time. Naturally, the backflush gas will be reversely input from the air outlet channel 21 into the first air inlet and outlet holes 51, so as to achieve the effect of backflush on the drying cylinder 56 of the dryer 5 to regenerate the dry particles.

[0044] In this embodiment, the dryer 5 includes a base 54, a cylinder cover 55, and a drying cylinder 56 disposed between the base 54 and the cylinder cover 55. A first air inlet and outlet hole 51 is provided through the center of the base 54. Third air inlet and outlet holes 53 are evenly distributed circumferentially on the base 54. A gas flow channel 57 is formed between the third air inlet and outlet holes 53 and the upper air hole of the drying cylinder 56. The gas flow channel 57 is located between the drying cylinder 56 and the cylinder cover 55. A lower air hole is provided at the bottom of the drying cylinder 56. The lower air hole is connected to the air outlet channel 21 through the first air inlet and outlet hole 51. The first air inlet and outlet hole 51 is screwed and fixed to the connecting screw 22 through its internal thread. A recoil structure 58 is provided on the dryer 5. The recoil structure 58 includes a recoil pipe 59 that penetrates the cylinder cover 55. The outer end of the recoil pipe 59 is connected to the second high-pressure gas generating assembly, and the inner end is connected to the reflux cavity between the lower air hole of the drying cylinder 56 of the dryer 5 and the mounting seat.

[0045] Specifically, the drying cylinder 56 of the dryer 5 is arranged in the base 54 and the cylinder cover 55. The gas to be treated of the mounting seat passes through the main body 1 and enters the gas flow channel 57 from the third air inlet and outlet hole 53, and then enters the drying cylinder 56 from the upper air hole of the drying cylinder 56 to achieve drying treatment. After the treatment is completed, it is output from the lower air hole at the lower end, and successively output to the air inlet of the mounting seat through the first air inlet and outlet hole 51 and the air outlet channel 21, and is transported from the air inlet to the subsequent structure to achieve air drying treatment; during backflush, the air inlet is closed, and the backflush component 3 inputs the backflush gas to the air outlet channel 21, and the backflush gas is transported in the reverse direction to achieve the regeneration of the dry particles of the drying cylinder 56. In addition, a recoil pipe 59 is arranged on the dryer 5. The recoil pipe 59 passes through the cylinder cover 55 and is connected to the second high-pressure gas generating component in the outside world. The inner end is connected to the reflux chamber, which can also achieve a good recoil effect. With the synchronous cooperation of the backflush component 3, the backflush efficiency can be further increased and the regeneration rate of the dry particles can be improved.

[0046] like Figure 3-5As shown, the connection structure 2 includes a connection screw 22, a screw mounting hole 11 is provided through the middle of the main body 1, the connection screw 22 is rotatably connected to the screw mounting hole 11, and a sealing assembly 4 is provided between the connection screw 22 and the screw mounting hole 11. The upper end of the connection screw 22 is provided with an external thread for connecting to the base 54 of the dryer 5 and a vertically opened internal hexagonal hole 25, and the lower end is vertically opened with a threaded hole 24 for connecting to the mounting seat, and the internal hexagonal hole 25 and the threaded hole 24 are connected to form an air outlet channel 21. An annular limiting portion 23 is provided on the outer wall of the connection screw 22, and the lower end surface of the annular limiting portion 23 is in contact with the upper end surface of the main body 1; the sealing assembly 4 includes a first sealing ring 41 and a second sealing ring 42, the first sealing ring 41 is sealed between the outer wall of the connection screw 22 and the screw mounting hole 11, and the second sealing ring 42 is sealed between the annular limiting portion 23 and the upper end surface of the main body 1.

[0047] Specifically, the connecting screw 22 is rotatably connected to the screw mounting hole 11 of the main body 1, and is used to achieve the connection with the drying cylinder 56 and the mounting seat. The sealing component 4 is arranged between the connecting screw 22 and the screw mounting hole 11, which is a dynamic seal. Under the premise of not affecting the rotatability of the connecting screw 22, a good sealing effect is ensured between them. The upper end of the connecting screw 22 is provided with an external thread, and the base 54 of the dryer 5 is screwed with the external thread through its internal thread. The lower end is provided with a threaded hole 24, and the threaded hole 24 is screwed with the external thread of the base 54. The base 54, the connecting screw 22 and the dryer 5 are all connected by threads, which is detachable, and the connection is stable and convenient for disassembly and assembly. The hexagonal hole 25 is used to tighten the connecting screw 22. Among them, the external thread at the upper end of the base 54, the internal thread at the lower end of the connecting screw 22, the external thread at the upper end of the connecting screw 22 and the internal thread at the lower end of the dryer 5 are all adapted to each other, and the inner diameter of the threaded hole is larger than the inner diameter of the hexagonal section. The annular limiting portion 23 is arranged on the connecting screw 22 and is in contact with the upper end of the main body 1 for axial limiting. The sealing assembly 4 is provided with two sealing rings, namely a first sealing ring 41 and a second sealing ring 42, to ensure that a sealed intermediate cavity 31 can be formed between the first sealing ring 41 and the second sealing ring 42. The intermediate cavity 31 is used as a connecting medium between the air outlet channel 21 and the backblowing assembly 3.

[0048] As an optimization of this embodiment, an annular groove 12 is provided on the outer side of the upper end of the screw installation hole 11, and the annular limiting portion 23 is just located in the annular groove 12, which has a certain positioning effect, and the second sealing ring 42 can be arranged between the annular groove 12 and the annular limiting portion 23. A positioning convex ring 13 is provided on the inner side of the lower end of the screw installation hole 11, and the inner diameter of the annular positioning convex ring 13 is adapted to the outer diameter of the connecting screw 22, and the first sealing ring 41 and the second sealing ring 42 are both arranged above the positioning convex ring 13.

[0049] like Figure 5As shown, the outer diameter of the connecting screw 22 is smaller than the inner diameter of the screw mounting hole 11, and an intermediate cavity 31 is formed between the first sealing ring 41 and the second sealing ring 42. The inner side of the intermediate cavity 31 is connected to the air outlet channel 21 through the first radial through hole 32 on the connecting screw 22, and the outer side is connected to the back-blowing assembly 3 through the second radial through hole 33 on the main body 1. The back-blowing assembly 3 includes a connecting platform 34 arranged on the outer side wall of the main body 1, and a back-blowing interface 35 is arranged on the connecting platform 34. The back-blowing interface 35 is connected to the second radial through hole 33 on the main body 1, and the back-blowing interface 35 is connected to the gas storage tank assembly.

[0050] Specifically, the connecting screw 22 is smaller than the screw mounting hole 11, ensuring that an intermediate cavity 31 can be formed therebetween, which is used as a medium for connecting the air outlet channel 21 and the back-blowing assembly 3. The first radial through hole 32 is radially penetrated on the connecting screw 22, and its inner end is connected to the air outlet channel 21, and its outer end is connected to the intermediate cavity 31. The second radial through hole 33 is radially penetrated on the main body 1, and its inner end is connected to the intermediate cavity 31, and its outer end is connected to the back-blowing assembly 3. The connecting platform 34 is arranged outside the main body 1, and does not affect the connection between the dryer 5 and the mounting seat on the upper and lower ends of the main body 1. The back-blowing interface 35 on the connecting platform 34 is used to connect the gas storage tank assembly, and the gas storage tank assembly is provided with a switch valve.

[0051] As an optimization of this embodiment, a plurality of heat dissipation protruding teeth 14 are evenly distributed circumferentially on the outer side wall of the main body 1 . The heat dissipation protruding teeth 14 protrude radially and are arranged at intervals.

[0052] Specifically, the heat dissipation teeth 14 radially protrude from the outer wall of the main body 1, increasing the contact area between the main body 1 and the outside world. The main body 1 is in contact with the lower end of the dryer 5, which helps to quickly dissipate the heat of the dryer 5 and facilitates the full condensation of the hot and humid air in the dryer 5 so that it can be quickly discharged during pressure-limited exhaust.

[0053] As an optimization of this embodiment, the first docking ring 52 at the upper end of the main body 1 and the lower end of the dryer 5 are tightly attached, and a plurality of second air inlet and outlet holes 16 are evenly distributed circumferentially on the main body 1, and the upper ends of the second air inlet and outlet holes 16 are connected to the third air inlet and outlet holes 53 at the bottom of the dryer 5; the lower end of the main body 1 is provided with a second docking ring 15 for attaching to the base 54.

[0054] Specifically, the main body 1 and the first docking ring 52 of the dryer 5 are in close contact, forming a good seal therebetween. The second docking ring 15 at the lower end of the main body 1 is substantially the same as the first docking ring 52 and is used for docking with the mounting seat. The second air inlet and outlet 16 is located between the third air inlet and outlet 53 and the base 54 and is used for ensuring smooth docking of the third air inlet and outlet 53 and the base 54 of the dryer 5.

[0055] Specific working principle: Taking the air dryer with application number CN2023114628886 as an example, the external thread on the upper end of the connecting screw 22 is screwed to the bottom end of the air dryer 5, the upper end surface of the main body 1 is tightly attached to the second docking ring 15 of the air dryer 5, and the threaded hole 24 at the lower end of the connecting screw 22 is screwed and fixed to the mounting seat, the first docking ring 52 of the main body 1 is butt-jointed with the upper end of the mounting seat, and the air storage tank assembly is connected to the backblowing interface 35 to complete the installation.

[0056] During the drying process, the mounting seat outputs the air to be processed, which passes through the second air inlet and outlet holes 16 and the third air inlet and outlet holes 53 in turn, enters the gas flow channel 57, and then enters the drying cylinder 56 from the upper air hole of the drying cylinder 56 for drying treatment. After the treatment is completed, it is output from the lower air hole, enters the air outlet channel 21 through the first air inlet and outlet holes 51, and finally output from the air inlet of the mounting seat and is transported to subsequent equipment. At the same time, the output gas is stored in the gas storage tank assembly from the air outlet channel 21 through the first radial through hole 32, the middle cavity 31, the second radial through hole 33 and the switch valve.

[0057] When the recoil device is recoiled, the mounting seat stops inputting the air to be processed, and the air inlet is closed at the same time, and the one-way valve of the air storage tank assembly is closed, and the high-pressure recoil gas stored therein is outputted in the reverse direction, and is outputted from the air outlet channel 21 to the dryer 5, and the recoil gas enters from the lower air hole of the drying cylinder 56 to achieve the regeneration of the dry particles of the drying cylinder 56, and the recoil gas is outputted from the upper air hole with moisture, and is transported in the reverse direction, and is outputted from the mounting seat through the third air inlet and outlet hole 53 and the second air inlet and outlet hole 16. At the same time, due to the rapid heat dissipation effect of the heat dissipation convex teeth 14, the high-temperature humid hot gas condenses near the second air inlet and outlet hole 16 and the third air inlet and outlet hole 53, and the condensed water droplets will be blown out when the recoil gas passes through.

[0058] At the same time, the recoil structure 58 of the air dryer 5 can also work at the same time to further improve the recoil efficiency.

[0059] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A recoil device for an air dryer, arranged between a dryer (5) and a mounting seat, characterized in that: The invention comprises a main body (1), wherein the main body (1) is provided with a connecting structure (2) for connecting a dryer (5) and a mounting seat, wherein an air outlet channel (21) is provided in the connecting structure (2), and the main body (1) is connected with a backflush assembly (3), wherein the backflush assembly (3) and the air outlet channel (21) are connected, and the upper and lower ends of the air outlet channel (21) are respectively connected with a first air inlet and outlet hole (51) of the dryer (5) and an air inlet of the mounting seat.

2. The recoil device of the air dryer according to claim 1, characterized in that: The connection structure (2) comprises a connection screw (22), a screw mounting hole (11) is provided through the middle of the main body (1), the connection screw (22) is rotatably connected to the screw mounting hole (11), and a sealing component (4) is provided between the connection screw (22) and the screw mounting hole (11).

3. The recoil device of the air dryer according to claim 2, characterized in that: The upper end of the connecting screw (22) is provided with an external thread for connecting to the base (54) of the dryer (5) and a vertically opened internal hexagonal hole (25), and the lower end is vertically opened with a threaded hole (24) for connecting to the mounting seat, and the internal hexagonal hole (25) and the threaded hole (24) are connected to form the air outlet channel (21).

4. The recoil device of the air dryer according to claim 2, characterized in that: An annular limiting portion (23) is provided on the outer wall of the connecting screw (22), and the lower end surface of the annular limiting portion (23) is in contact with the upper end surface of the main body (1); the sealing assembly (4) comprises at least a first sealing ring (41) and a second sealing ring (42), the first sealing ring (41) is sealingly fitted between the outer wall of the connecting screw (22) and the screw mounting hole (11), and the second sealing ring (42) is sealingly fitted between the annular limiting portion (23) and the upper end surface of the main body (1), or between the outer wall of the connecting screw (22) and the screw mounting hole (11).

5. The recoil device of the air dryer according to claim 4, characterized in that: The outer diameter of the connecting screw (22) is smaller than the inner diameter of the screw mounting hole (11); an intermediate cavity (31) is formed between the first sealing ring (41) and the second sealing ring (42); the inner side of the intermediate cavity (31) is connected to the air outlet channel (21) via a first radial through hole (32) on the connecting screw (22); and the outer side is connected to the backflush assembly (3) via a second radial through hole (33) on the main body (1).

6. The recoil device of the air dryer according to claim 1, characterized in that: The back-blowing assembly (3) comprises a connecting platform (34) arranged on the outer wall of the main body (1), and a back-blowing interface (35) is provided on the connecting platform (34). The back-blowing interface (35) is connected to the second radial through hole (33) on the main body (1), and the back-blowing interface (35) is connected to the gas storage tank assembly or the first high-pressure gas generating assembly.

7. The recoil device of the air dryer according to claim 1, characterized in that: A plurality of heat dissipation protruding teeth (14) are evenly distributed circumferentially on the outer side wall of the main body (1); the heat dissipation protruding teeth (14) protrude radially and are arranged at intervals.

8. The recoil device of the air dryer according to any one of claims 1 to 7, characterized in that: The upper end of the main body (1) and the first docking ring (52) at the lower end of the dryer (5) are in close contact, and a plurality of second air inlet and outlet holes (16) are evenly distributed circumferentially on the main body (1), and the upper ends of the second air inlet and outlet holes (16) are connected to the third air inlet and outlet holes (53) at the bottom of the dryer (5); The lower end of the main body (1) is provided with a second docking ring (15) for abutting against the base (54).

9. The recoil device of the air dryer according to any one of claims 1 to 7, characterized in that: The dryer (5) comprises a base (54), a cylinder cover (55) and a drying cylinder (56) arranged between the base (54) and the cylinder cover (55); a first air inlet and outlet hole (51) is arranged through the center of the base (54); third air inlet and outlet holes (53) are evenly distributed circumferentially on the base (54); a gas flow channel (57) is formed between the third air inlet and outlet holes (53) and the upper air hole of the drying cylinder (56); the gas flow channel (57) is located between the drying cylinder (56) and the cylinder cover (55); a lower air hole is arranged at the bottom of the drying cylinder (56); the lower air hole is connected to the air outlet channel (21) through the first air inlet and outlet hole (51); the first air inlet and outlet hole (51) is screwed and fixed to the connecting screw (22) of the connecting structure (2) through its internal thread.

10. The recoil device of the air dryer according to any one of claims 1 to 7, characterized in that: The dryer (5) is provided with a recoil structure (58), and the recoil structure (58) includes a recoil pipe (59) penetrating through the cylinder cover (55) of the dryer (5), and the outer end of the recoil pipe (59) is connected to the second high-pressure gas generating component, and the inner end is connected to the lower air hole of the drying cylinder (56) of the dryer (5) and the reflux chamber between the mounting seat.

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