Gas drying device

Abstract

The utility model relates to the technical field of gas source drying equipment, in particular to a gas drying device. One end of a shell of the device is provided with an air inlet channel and an air outlet channel, the other end of the shell is provided with a water outlet, a cyclone pipe is arranged in the shell, a first air channel is defined between the cyclone pipe and the shell, the air inlet channel, the first air channel and the water outlet are communicated, and the outer wall of the end, close to the air inlet channel, of the cyclone pipe is provided with a plurality of cyclone pieces abutting against the inner wall of the shell. The multiple cyclone pieces are obliquely arranged relative to the extending direction of the first air channel, and a cyclone channel is defined between every two adjacent cyclone pieces, so that when airflow input by the air inlet channel passes through the cyclone pieces, the airflow can form vortex airflow, the airflow can generate centrifugal force, moisture in air is separated, and the air quality is improved. And the cyclone channel defined between every two adjacent cyclone pieces can reduce the gap through which the airflow enters the first air channel, so that the airflow is compressed, the flow speed of the airflow in the gas drying device is increased, and the separation efficiency of the airflow is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas source drying equipment technical field especially a gas drying device. BACKGROUND

[0002] The gas drying device is a kind of equipment for removing moisture or other humidity components in gas.The existing gas drying device is usually removed moisture or humidity components in gas by condensation, membrane separation, chemical reaction etc., but its processing cost is larger problem.

[0003] To solve the above problems, centrifugal gas drying device appears now, it is by being arranged centrifugal piece and specific air duct in device interior, so that the airflow can form centrifugal effect when passing through centrifugal piece, to separate the water vapor mixed in airflow.But the separation effect of airflow in the device in the prior art is not good, and the flow rate is limited, and the separation efficiency is not good. SUMMARY

[0004] The technical problem to be solved by the embodiment of the utility model lies in providing a gas drying device to solve the problems of poor separation effect in the gas drying device in the prior art and limited airflow flow rate.

[0005] The gas drying device provided by the embodiment of the utility model comprises: a shell, one end of the shell is provided with an air inlet channel and an air outlet channel, the other end of the shell is provided with a drain port; a cyclone pipe is arranged in the shell, a first air duct is defined between the cyclone pipe and the shell, the air inlet channel, the first air duct and the drain port are communicated, a plurality of cyclone fins are arranged on the outer wall of the end of the cyclone pipe close to the air inlet channel and abut against the inner wall of the shell, the plurality of cyclone fins are all arranged obliquely relative to the extension direction of the first air duct, and a cyclone channel is defined between the two adjacent cyclone fins; a separation pipe is sleeved in the cyclone pipe, one end of the separation pipe is communicated with the air outlet channel, the other end of the separation pipe is closed, a second air duct is defined between the separation pipe and the cyclone pipe, air inlet holes are arranged on the pipe wall of the separation pipe, and the second air duct is communicated with the inside of the separation pipe through the air inlet holes.

[0006] Optionally, the outer wall of the end of the cyclone pipe close to the air inlet channel is provided with a mounting flange, the mounting flange comprises a first side wall parallel to the extension direction of the second air duct and a second side wall away from the air inlet channel, and the plurality of cyclone fins are arranged on the first side wall.

[0007] Optionally, the end of the second side wall close to the outer wall of the cyclone pipe is recessed with a clearance groove, so that the second side wall is separated from the outer wall of the cyclone pipe.

[0008] Optionally, the end of the separation pipe close to the drain port is at least partially located outside the cyclone pipe.

[0009] Optionally, the plurality of cyclone blades, the mounting side and the cyclone pipe are integrally formed.

[0010] Optionally, the shell comprises a cover and a shell body, the cover and the drain port are arranged at opposite ends of the shell, the air inlet channel and the air outlet channel are arranged in the cover, and the first air duct is defined between the shell body and the cyclone pipe.

[0011] Optionally, the cover is provided with a first connecting arm, and the first connecting arm is threadedly connected with the shell body.

[0012] Optionally, one end of the separation pipe away from the drain port is provided with a first connecting portion, the first connecting portion is arranged outside the cyclone pipe, the cover is internally provided with a second connecting arm, the second connecting arm is in communication with the air outlet channel, one end of the first connecting portion is exposed outside the cyclone pipe and is threadedly connected with the second connecting arm, and the other end of the first connecting portion is in abutment with the inner wall of the cyclone pipe to fix the cyclone pipe.

[0013] Optionally, one end of the cyclone pipe close to the air inlet channel is provided with a second connecting portion, one end of the second connecting portion is in abutment with the second connecting arm, the first connecting portion is arranged in the second connecting portion, the other end of the first connecting portion is provided with an abutment arm, and the other end of the second connecting portion is located in the second air duct and is in abutment with the abutment arm.

[0014] Optionally, one end of the cyclone pipe close to the air inlet channel is provided with a second connecting portion, one end of the second connecting portion is in abutment with the second connecting arm, the first connecting portion is arranged in the second connecting portion, the other end of the first connecting portion is provided with an abutment arm, and the other end of the second connecting portion is located in the second air duct and is in abutment with the abutment arm.

[0015] Optionally, the air inlet hole is arranged close to the abutment arm.

[0016] Compared with the prior art, the gas drying device has the advantages that: the shell of the gas drying device is provided with an air inlet channel and an air outlet channel at one end, and a drain port at the other end, the cyclone pipe of the gas drying device is arranged in the shell, a first air duct is defined between the cyclone pipe and the shell, the air inlet channel, the first air duct and the drain port are communicated, a plurality of cyclone fins abutting against the inner wall of the shell are arranged on the outer wall of the cyclone pipe close to the air inlet channel, the plurality of cyclone fins are arranged obliquely relative to the extension direction of the first air duct, and a cyclone channel is defined between the adjacent two cyclone fins, so that on the one hand, when the airflow input by the air inlet channel passes through the cyclone fins, the airflow can form a vortex airflow, so that the airflow can generate a centrifugal force, thereby effectively separating the moisture in the gas, and on the other hand, the cyclone channel defined between the adjacent two cyclone fins can reduce the gap of the airflow input by the air inlet channel into the first air duct, thereby playing a compression role on the airflow, so as to increase the flow rate of the airflow in the gas drying device, thereby ensuring the separation efficiency of the airflow. BRIEF DESCRIPTION OF DRAWINGS

[0017] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples, and the drawings are as follows:

[0018] Figure 1 is the three-dimensional schematic view of the gas drying device provided by the utility model embodiment;

[0019] Figure 2 is the cross-sectional view of the gas drying device provided by the utility model embodiment;

[0020] Figure 3 is the exploded view of one perspective of the gas drying device provided by the utility model embodiment;

[0021] Figure 4 is the exploded view of another perspective of the gas drying device provided by the utility model embodiment;

[0022] Figure 5 is the cross-sectional view of the cyclone pipe provided by the utility model embodiment.

[0023] The reference signs in the drawings are as follows:

[0024] 100, gas drying device;

[0025] 1, shell; 11, cover; 111, air inlet channel; 112, air outlet channel; 113, first connecting arm; 114, second connecting arm; 12, shell body; 121, drain; 2, cyclone pipe; 21, cyclone piece; 211, cyclone channel; 22, mounting side; 221, first side wall; 222, second side wall; 23, air clearance; 24, second connecting part; 3, separation pipe; 31, air inlet hole; 32, first connecting part; 321, abutting arm; 33, first end; 4, first air duct; 5, second air duct. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Now, the preferred embodiments of the present application will be described in detail with reference to the drawings.

[0027] The present application provides a kind of gas drying device 100, as shown in the figure, the gas drying device 100 includes shell 1, cyclone pipe 2 and separation pipe 3. Figures 1 to 5 Wherein, shell 1 one end is equipped with air inlet channel 111 and air outlet channel 112, the other end is equipped with drain 121, cyclone pipe 2 is located in shell 1, cyclone pipe 2 and shell 1 between first air duct 4 are defined, air inlet channel 111, first air duct 4 and drain 121 are communicated, the outer wall of cyclone pipe 2 is equipped with multiple cyclone pieces 21 with the inner wall of shell 1 abutting in the end close to air inlet channel 111, and multiple cyclone pieces 21 are all inclined to be arranged relative to the extension direction of first air duct 4, cyclone channel 211 is defined between adjacent two cyclone pieces 21, separation pipe 3 is sleeved in cyclone pipe 2, one end of separation pipe 3 is communicated with air outlet channel 112, the other end is closed, and second air duct 5 is defined between separation pipe 3 and cyclone pipe 2, air inlet hole 31 is arranged on the pipe wall of separation pipe 3, and second air duct 5 is communicated with the inside of separation pipe 3 through air inlet hole 31.

[0028] Specifically, by being equipped with multiple cyclone pieces 21 with the inner wall of shell 1 abutting in the outer wall of cyclone pipe 2 in the end close to air inlet channel 111, and making multiple cyclone pieces 21 all be inclined to be arranged relative to the extension direction of first air duct 4, cyclone channel 211 is defined between adjacent two cyclone pieces 21, thereby on the one hand, when the airflow input by air inlet channel 111 passes through cyclone piece 21, the airflow can form vortex airflow, so that the airflow can generate centrifugal force, the mass difference between water vapor and gas in the airflow is utilized, and the mixed water in the airflow is effectively separated, on the other hand, the cyclone channel 211 defined between adjacent two cyclone pieces 21 can reduce the gap of the airflow input by air inlet channel 111 into first air duct 4, so as to compress the airflow to increase the flow rate of the airflow in the gas drying device 100, so as to ensure the separation efficiency of the airflow.

[0029] Since the air inlet passage 111, the first air duct 4 and the water outlet 121 are communicated, the water mixed in the air flow can be collected from the first air duct 4 to the water outlet 121 after the air flow forms a vortex air flow for centrifugal separation, so as to be discharged out of the air drying device 100. It can be understood that in actual use, the shell 1 is vertically placed, i.e. one end of the air inlet passage 111 and the air outlet passage 112 of the shell 1 is placed upward, and one end of the water outlet 121 of the shell 1 is placed downward, so that the water after centrifugal separation can be collected to the water outlet 121 along the first air duct 4 under the action of gravity, and the water outlet 121 is connected with a water collecting container, so that the water collecting container can collect the water vapor discharged from the water outlet 121 while ensuring the sealing of the inside of the shell 1, so as to facilitate the smooth flow of the air flow after centrifugal separation in the shell 1.

[0030] In addition, the separation pipe 3 is arranged in the cyclone pipe 2, one end of the separation pipe 3 is communicated with the air outlet passage 112, and the other end is closed, and the second air duct 5 is defined between the separation pipe 3 and the cyclone pipe 2, the air inlet hole 31 is arranged on the pipe wall of the separation pipe 3, and the second air duct 5 is communicated with the inside of the separation pipe 3 through the air inlet hole 31. Therefore, after the air flow after centrifugal separation flows out of the first air duct 4, it can flow into the second air duct 5 defined between the separation pipe 3 and the cyclone pipe 2 from the pipe opening of the cyclone pipe 2 close to the water outlet 121, and then enter the inside of the separation pipe 3 through the air inlet hole 31 on the pipe wall of the separation pipe 3 in the second air duct 5, and then flow to the air outlet passage 112 from the pipe opening of the separation pipe 3, so as to be discharged out of the air drying device 100, so as to collect the dried air.

[0031] In the process that the air flow flows from the first air duct 4 to the second air duct 5, the air flow will be bent by 180 degrees, and the flow direction of the air flow in the second air duct 5 is opposite to the direction of gravity, so that the separated water vapor entrained by the air flow when entering the second air duct 5 can be effectively reduced. In the process that the air flow flows from the second air duct 5 to the inside of the separation pipe 3, since the separation pipe 3 is arranged in the cyclone pipe 2, and the air flow flows into the inside of the separation pipe 3 through the air inlet hole 31 on the pipe wall of the separation pipe 3 by 90 degrees, according to Bernoulli's principle, the flow velocity of the air flow around the pipe wall of the separation pipe 3 will change, which causes the change of the pressure of the air flow, so as to destroy the required pressure balance condition of the siphon effect in the cyclone pipe 2, avoid the siphon effect of the air flow in the cyclone pipe 2, and be beneficial to improving the separation efficiency of the air flow; and the air flow around the pipe wall of the cyclone pipe 2 will generate vortex and boundary layer effect, so as to further remove the water in the air flow.

[0032] Specifically, when the airflow flows in the cyclone tube 2, the airflow will form a vortex in the second air duct 5 defined between the separation tube 3 and the cyclone tube 2 due to the obstruction of the separation tube 3. This is because, according to fluid mechanics, when a fluid flows around an object, the fluid will separate at the boundary layer of the object, the main flow fluid interacts with the separated boundary layer fluid, thereby generating a rotating flow structure, which can consume the water vapor in the airflow that has not been completely separated to maintain the energy required to overcome gravity when moving with the airflow, so that the water in the airflow can be separated from the airflow and discharged out of the air drying device 100 through the drain port 121.

[0033] Further, as a specific implementation of some embodiments of the present application, as shown in Figures 2 to 5 The outer wall of the cyclone tube 2 near one end of the air inlet channel 111 is provided with a mounting edge 22, the mounting edge 22 includes a first side wall 221 parallel to the extension direction of the second air duct 5 and a second side wall 222 away from the air inlet channel 111, and a plurality of cyclone blades 21 are arranged on the first side wall 221.

[0034] Compared with directly arranging a plurality of cyclone blades 21 on the outer wall of the cyclone tube 2, by implementing the present embodiment, after the airflow input by the air inlet channel 111 passes through the centrifugation of the cyclone blades 21, the water vapor separated in the airflow will not directly adhere to the wall of the cyclone tube 2 along the cyclone channel 211 between the cyclone blades 21, but will adhere to the second side wall 222 of the mounting edge 22 and gather into droplets, thereby smoothly converging to the drain port 121 under the action of gravity.

[0035] Further, as a specific implementation of some embodiments of the present application, as shown in Figures 2 to 5 The second side wall 222 near one end of the outer wall of the cyclone tube 2 is recessed with an air avoidance groove 23, so that the second side wall 222 is separated from the outer wall of the cyclone tube 2.

[0036] Specifically, after the airflow input by the air inlet channel 111 passes through the centrifugation of the cyclone blades 21, the water vapor separated in the airflow will adhere to the second side wall 222 and gather into droplets, and because the air avoidance groove 23 is arranged between the mounting portion 222 and the outer wall of the cyclone tube 2, the mounting portion 222 and the outer wall of the cyclone tube 2 can be separated to form a gap, effectively preventing the droplets on the second side wall 222 from flowing along the second side wall 222 and the outer wall of the cyclone tube 2 to the end wall of the cyclone tube 2 near the drain port 121, thereby avoiding the droplets being carried into the second air duct 5 by the airflow, affecting the separation effect.

[0037] Further, as a specific implementation of some embodiments of the present application, as shown in Figure 2 The end of the separation tube 3 near the drain port 121 is at least partially located outside the cyclone tube 2.

[0038] Specifically, compared with arranging the separation pipe 3 completely in the cyclone pipe 2, arranging the separation pipe 3 with one end (i.e. the first end 33 in the separation pipe 3) near the water outlet 121 at least partially outside the cyclone pipe 2 can ensure that a low pressure area is better formed at the outer wall of the separation pipe 3 in the second air duct 5, so that the airflow flowing into the second air duct 5 can flow towards the outer wall of the separation pipe 3 in the central region of the second air duct 5 and is perpendicular to the flowing direction of the airflow flowing into the second air duct 5, so that the airflow forms a vortex in the second air duct 5, separates the water vapor in the airflow, and avoids the water vapor entering the air inlet hole 31 along with the airflow. Figure 2 Further, as a specific implementation manner of some embodiments of the present application, as shown in

[0039] the plurality of cyclone pieces 21, the mounting edges 22 and the cyclone pipe 2 are integrally formed. Figures 2 to 5 Specifically, the plurality of cyclone pieces 21, the mounting edges 22 and the cyclone pipe 2 are integrally formed, which can avoid arranging mounting structures between the cyclone pieces 21, the mounting edges 22 and the cyclone pipe 2, and is beneficial to ensuring the stability of the entire structure of the cyclone pieces 21, the mounting edges 22 and the cyclone pipe 2.

[0040] Further, as a specific implementation manner of some embodiments of the present application, as shown in

[0041] the shell 1 includes a cover body 11 and a shell body 12, the cover body 11 and the water outlet 121 are arranged at opposite ends of the shell 1, the air inlet channel 111 and the air outlet channel 112 are arranged in the cover body 11, and the shell body 12 and the cyclone pipe 2 define the first air duct 4. Figures 1 to 4

[0042] Specifically, the shell 1 includes the cover body 11 and the shell body 12, and the cover body 11 and the shell body 12 can be assembled, so that the cyclone pipe 2 and the separation pipe 3 can be installed in the shell body 12. Specifically, the cyclone pipe 2 and the separation pipe 3 can be installed in the shell body 12 in the production process, and then the cover body 11 is assembled on the shell body 12, so that the installation of the cyclone pipe 2 and the separation pipe 3 is conveniently realized. The cover body 11 and the water outlet 121 are arranged at opposite ends of the shell 1, the air inlet channel 111 and the air outlet channel 112 are arranged in the cover body 11, and the air inlet channel 111 and the air outlet channel 112 are located at two sides of the cover body 11. The shell body 12 and the cyclone pipe 2 can define the first air duct 4, so that the water vapor mixed in the airflow can be separated.

[0043] Further, as a specific implementation manner of some embodiments of the present application, as shown in Figures 1 to 4 the cover body 11 is provided with a first connecting arm 113, and the first connecting arm 113 is threadedly connected with the shell body 12.

[0044] ​Specifically, the cover body 11 is provided with a first connecting arm 113, which is threadedly connected with the shell body 12, so that the cover body 11 and the shell body 12 can be conveniently assembled or disassembled, thereby on the one hand, the production efficiency of the gas drying device 100 can be improved in the production process, and on the other hand, when the air flow in the shell body 12 has a problem or the cyclone pipe 2 and the separation pipe 3 have a fault, the shell cover body 11 can be conveniently opened for fault checking and replacement of the corresponding parts.

[0045] Further, as a specific embodiment of some embodiments of the present application, Figures 2 to 5 As shown in the figure, the separation pipe 3 is provided with a first connecting portion 32 at one end away from the drain port 121, the first connecting portion 32 is arranged outside the cyclone pipe 2, the cover body 11 is provided with a second connecting arm 114 inside, the second connecting arm 114 is in communication with the air outlet channel 112, one end of the first connecting portion 32 is exposed outside the cyclone pipe 2 and is threadedly connected with the second connecting arm 114, and the other end of the first connecting portion 32 abuts against the inner wall of the cyclone pipe 2 to fix the cyclone pipe 2.

[0046] Specifically, the first connecting portion 32 of the separation pipe 3 is arranged outside the cyclone pipe 2, one end of the first connecting portion 32 is exposed outside the cyclone pipe 2 and is threadedly connected with the second connecting arm 114 inside the cover body 11, and the other end of the first connecting portion 32 abuts against the inner wall of the cyclone pipe 2, so that when installed, the cyclone pipe 2 and the separation pipe 3 can be assembled together, and one end of the first connecting portion 32 of the separation pipe 3 is exposed outside the cyclone pipe 2, and the first connecting portion 32 and the second connecting arm 114 of the cover body 11 are threadedly connected, so that the cover body 11 can be rotated to realize the close connection between the separation pipe 3 and the cover body 11, so that the installation process is more convenient and efficient. And since the other end of the first connecting portion 32 can abut against the inner wall of the cyclone pipe 2, the cyclone pipe 2 can be fixed at the same time after the separation pipe 3 is connected with the cover body 11, so that the installation process can be effectively simplified, the installation steps and the required tools are reduced, and the installation process is more convenient and efficient.

[0047] Further, as a specific embodiment of some embodiments of the present application, Figures 2 to 5 As shown in the figure, the cyclone pipe 2 is provided with a second connecting portion 24 at one end close to the air inlet channel 111, one end of the second connecting portion 24 abuts against the second connecting arm 114, the first connecting portion 32 is arranged in the second connecting portion 24, the other end of the first connecting portion 32 is provided with an abutting arm 321, and the other end of the second connecting portion 24 is located in the second air duct 5 and abuts against the abutting arm 321.

[0048] Specifically, the first connecting portion 32 is threaded through the second connecting portion 24, so that one end of the first connecting portion 32 away from the drain port 121 can be exposed outside the cyclone pipe 2 and be screwed with the second connecting arm 114 inside the cover body 11. In addition, after the first connecting portion 32 is screwed with the second connecting arm 114, one end of the second connecting portion 24 can be in abutment with the second connecting arm 114, and the abutment arm 321 at the other end of the first connecting portion 32 can be in abutment with the other end of the second connecting portion 24, so as to clamp and fix the second connecting portion 24 between the second connecting arm 114 and the abutment arm 321 of the first connecting portion 32, thereby achieving the fixation of the cyclone pipe 2.

[0049] Further, as a specific implementation manner of some embodiments of the present application, as shown in Figures 2 to 4 The air inlet hole 31 is arranged close to the abutment arm 321.

[0050] Specifically, by arranging the air inlet hole 31 at the position close to the abutment arm 321 on the pipe wall of the separation pipe 3, the moisture removed again in the airflow can be attached to the pipe wall of the separation pipe 3 below the air inlet hole 31 when the airflow passes through the air inlet hole 31 on the pipe wall of the cyclone pipe 2, so as to avoid the moisture on the pipe wall of the separation pipe 3 from entering the inside of the separation pipe 3 through the air inlet hole 31, and then being carried to the air outlet passage 112 by the airflow.

[0051] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced equivalently; all these modifications and replacements shall belong to the protection scope of the claims of the present application.

Claims

1. A gas drying device, characterized by, The utility model relates to a cyclone dust collector, comprising: a shell, one end of which is provided with an air inlet channel and an air outlet channel, and the other end of which is provided with a water outlet; a cyclone pipe, which is arranged in the shell, and a first air duct is defined between the cyclone pipe and the shell, the air inlet channel, the first air duct and the water outlet are communicated, a plurality of cyclone fins are arranged on the outer wall of the cyclone pipe near the air inlet channel, and the cyclone fins are arranged obliquely relative to the extension direction of the first air duct, and a cyclone channel is defined between adjacent two cyclone fins; a separation pipe, which is sleeved in the cyclone pipe, one end of the separation pipe is communicated with the air outlet channel, and the other end of the separation pipe is closed, and a second air duct is defined between the separation pipe and the cyclone pipe, and an air inlet hole is arranged on the pipe wall of the separation pipe, and the second air duct is communicated with the inside of the separation pipe through the air inlet hole.

2. The gas drying apparatus according to claim 1, characterized by The outer wall of the cyclone pipe near the air inlet channel is provided with a mounting flange, the mounting flange comprises a first side wall parallel to the extension direction of the second air duct and a second side wall away from the air inlet channel, and the cyclone fins are arranged on the first side wall.

3. The gas drying apparatus according to claim 2, wherein The second side wall is recessed with a clearance near one end of the outer wall of the cyclone pipe, so that the second side wall is separated from the outer wall of the cyclone pipe.

4. The gas drying apparatus according to claim 1, wherein The end of the separation pipe near the water outlet is at least partially located outside the cyclone pipe.

5. The gas drying apparatus according to claim 3, wherein The cyclone fins, the mounting flange and the cyclone pipe are integrally formed.

6. The gas drying device according to any one of claims 1 to 5, characterized in that The shell comprises a cover body and a shell main body, the cover body and the water outlet are arranged at opposite ends of the shell, the air inlet channel and the air outlet channel are arranged in the cover body, and the first air duct is defined between the shell main body and the cyclone pipe.

7. The gas drying apparatus according to claim 6, wherein The cover body is provided with a first connecting arm, and the first connecting arm is threadedly connected with the shell main body.

8. The gas drying apparatus according to claim 7, wherein The end of the separation pipe away from the water outlet is provided with a first connecting part, the first connecting part is arranged outside the cyclone pipe, the inside of the cover body is provided with a second connecting arm, the second connecting arm is communicated with the air outlet channel, one end of the first connecting part is exposed outside the cyclone pipe and is threadedly connected with the second connecting arm, and the other end of the first connecting part is abutted with the inner wall of the cyclone pipe to fix the cyclone pipe.

9. The gas drying apparatus according to claim 8, wherein The end of the cyclone pipe near the air inlet channel is provided with a second connecting part, one end of the second connecting part is abutted with the second connecting arm, the first connecting part is arranged in the second connecting part, the other end of the first connecting part is provided with an abutting arm, and the other end of the second connecting part is located in the second air duct and is abutted with the abutting arm.

10. The gas drying apparatus according to claim 9, wherein The air inlet hole is arranged near the abutting arm.

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