Gas drying device

Abstract

The utility model relates to the technical field of gas source drying equipment, in particular to a gas drying device. According to the device, the separation pipe is sleeved with a second centrifugal pipe, the second centrifugal pipe is located on the side, close to the water outlet, of the first air inlet, so that a third air channel can be formed between the second centrifugal pipe and the separation pipe, the end, close to the water outlet, of the second centrifugal pipe is in sealed connection with the pipe wall of the separation pipe, and the pipe wall of the second centrifugal pipe is provided with a second air inlet. The second air inlet hole, the second air duct and the third air duct are communicated, and the second air inlet hole is formed in the tube wall of the second centrifugal tube, so that the second air inlet hole and the third air duct in the second centrifugal tube can be tangentially arranged; therefore, after airflow separated for the first time by the cyclone piece on the first centrifugal tube in the device enters the third air duct in the second centrifugal tube through the second air inlet hole, the airflow can generate centrifugal force again, so that secondary centrifugal separation is carried out, water which is not separated in the first time of separation in the airflow can be separated out, and the separation effect is effectively improved.

Description

TECHNICAL FIELD

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

[0002] The centrifugal gas drying device is a kind of equipment using centrifugal force to separate water from gas, which forms centrifugal effect when gas flow passes through centrifugal part by setting centrifugal part and specific air duct in the device, so as to separate water vapor mixed in gas flow. But the centrifugal gas drying device in the prior art only separates once at the inlet passage, and the separation effect is not good. SUMMARY

[0003] The technical problem to be solved by the utility model embodiment is to provide a gas drying device to solve the problems of simple structure of centrifugal part and low separation efficiency in the prior art.

[0004] The gas drying device provided by the utility model embodiment comprises a shell, a first centrifugal pipe, a separation pipe and a second centrifugal pipe. One end of the shell is provided with an inlet passage and an outlet passage, and the other end is provided with a drain port. The first centrifugal pipe is arranged in the shell, and a first air duct is defined between the first centrifugal pipe and the shell. The inlet passage, 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 first centrifugal pipe close to the inlet passage and abut against the inner wall of the shell. The plurality of cyclone fins are obliquely arranged in the extension direction of the first air duct. A cyclone passage is defined between adjacent two cyclone fins. The separation pipe is arranged in the first centrifugal pipe. One end of the separation pipe is communicated with the outlet passage, and the other end is closed. A second air duct is defined between the separation pipe and the first centrifugal pipe. A first air inlet hole is arranged on the pipe wall of the separation pipe. The second air duct is communicated with the inside of the separation pipe through the first air inlet hole. The second centrifugal pipe is sleeved outside the separation pipe and located on the side of the first air inlet hole close to the drain port. A third air duct is formed between the second centrifugal pipe and the separation pipe. One end of the second centrifugal pipe close to the drain port is sealingly connected with the pipe wall of the separation pipe. A second air inlet hole is arranged on the pipe wall of the second centrifugal pipe. The second air inlet hole, the second air duct and the third air duct are communicated.

[0005] Optionally, the end of the second centrifugal pipe close to the drain port is provided with a first compression part, the first compression part abuts against the inner wall of the first centrifugal pipe, and a third air inlet hole is arranged on the first compression part. The second air duct is communicated with the first air duct through the third air inlet hole.

[0006] Optionally, the utility model further comprises a compression part, the first centrifugal pipe is arranged at intervals from the drain port, the compression part is located between the first centrifugal pipe and the drain port, and the compression part is provided with a plurality of compression holes.

[0007] Optionally, the compression member comprises a second compression part and a connecting rod part, one end of the connecting rod part is connected with the second compression part, the other end is connected with one end of the separation tube close to the water outlet, and the compression hole is arranged on the second compression part.

[0008] Optionally, the first centrifugal tube is provided with a mounting flange close to one end of the air inlet channel, the mounting flange comprises a first connecting part and a mounting part, one end of the first connecting part is connected with the tube wall of the first centrifugal tube, the other end is connected with the mounting part, the mounting part is located outside the first centrifugal tube, and a plurality of cyclone blades are arranged on the outer side wall of the mounting part.

[0009] Optionally, the mounting part is arranged towards the extension direction of the second air duct, and an emptying groove is arranged between the mounting part and the outer side wall of the first centrifugal tube.

[0010] Optionally, 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 shell main body and the first centrifugal tube define the first air duct.

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

[0012] Optionally, one end of the separation tube away from the water outlet is provided with a second connecting part, the second connecting part penetrates the first centrifugal tube, the inside of the cover body is provided with a second connecting arm, the second connecting arm is in communication with the air outlet channel, one end of the second connecting part is exposed outside the first centrifugal tube and is threadedly connected with the second connecting arm, and the other end of the second connecting part abuts against the inner wall of the first centrifugal tube to fix the first centrifugal tube.

[0013] Optionally, one end of the first centrifugal tube close to the air inlet channel is provided with a third connecting part, one end of the third connecting part abuts against the second connecting arm, the second connecting part penetrates the third connecting part, the other end of the second connecting part is provided with an abutting arm, and the other end of the third connecting part is located in the second air duct and abuts against the abutting arm.

[0014] Compared with the prior art, the gas drying device has the beneficial effects that: the gas drying device is provided with the second centrifugal pipe sleeved outside the separation pipe, and the second centrifugal pipe is located at the side of the first air inlet hole close to the water outlet, so that the third air duct can be formed between the second centrifugal pipe and the separation pipe, and the end of the second centrifugal pipe close to the water outlet is sealingly connected with the pipe wall of the separation pipe, the second air inlet hole is arranged on the pipe wall of the second centrifugal pipe, the second air inlet hole, the second air duct and the third air duct are communicated, and because the second air inlet hole is arranged on the pipe wall of the second centrifugal pipe, the second air inlet hole and the third air duct inside the second centrifugal pipe can be tangentially arranged, so that after the airflow separated by the first cyclone piece of the first centrifugal pipe enters the third air duct in the second centrifugal pipe through the second air inlet hole, the airflow can generate centrifugal force again, so that the second centrifugal separation is performed, and the moisture not separated in the first separation can be separated from the airflow, and the separation effect is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The specific implementation of the present application will be further described in detail below with reference to the accompanying drawings and embodiments, wherein:

[0016] Figure 1 is a perspective view of the gas drying device provided by the present application;

[0017] Figure 2 is a sectional view of the gas drying device provided by the present application;

[0018] Figure 3 is an exploded view of the gas drying device from one perspective provided by the present application;

[0019] Figure 4 is an exploded view of the gas drying device from another perspective provided by the present application;

[0020] Figure 5 is a sectional view of the first centrifugal pipe provided by the present application;

[0021] Figure 6 is a sectional view of the second centrifugal pipe provided by the present application.

[0022] The reference signs in the drawings are as follows:

[0023] 100, gas drying device;

[0024] 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 port; 2, first centrifugal pipe; 21, cyclone piece; 211, cyclone channel; 22, mounting side; 221, first connecting part; 222, mounting part; 23, clearance groove; 24, third connecting part; 3, second centrifugal pipe; 31, first compression part; 311, third air inlet hole; 312, connecting hole; 32, second air inlet hole; 4, separation pipe; 41, first air inlet hole; 42, second connecting part; 421, abutting arm; 5, first air duct; 6, second air duct; 7, third air duct; 8, compression piece; 81, second compression part; 81, compression hole; 82, connecting rod part. DETAILED DESCRIPTION

[0025] 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. The preferred embodiments of the present application will be described in detail with reference to the drawings.

[0026] The embodiment of the present application provides a kind of gas drying device 100, as shown in Figures 1 to 6 The gas drying device 100 includes shell 1, first centrifugal pipe 2, separation pipe 4 and second centrifugal pipe 3. Wherein, shell 1 one end is equipped with air inlet channel 111 and air outlet channel 112, the other end is equipped with drain port 121, first centrifugal pipe 2 is arranged in shell 1, first centrifugal pipe 2 and shell 1 between the first air duct 5 defined, air inlet channel 111, first air duct 5 and drain port 121 are communicated, the outer wall of first centrifugal pipe 2 near air inlet channel 111 one end is equipped with multiple cyclone pieces 21 with the inner wall of shell 1 abuts, and multiple cyclone pieces 21 are all with the extension direction of first air duct 5 obliquely arranged, between adjacent two cyclone pieces 21, cyclone channel 211 is defined, separation pipe 4 is arranged in first centrifugal pipe 2, one end of separation pipe 4 is communicated with air outlet channel 112, the other end is closed, and separation pipe 4 and first centrifugal pipe 2 between the second air duct 6 defined, the wall of separation pipe 4 is provided with first air inlet hole 41, second air duct 6 is communicated with the inside of separation pipe 4 through first air inlet hole 41, second centrifugal pipe 3 is sleeved on the outside of separation pipe 4, and is located in first air inlet hole 41 near drain port 121 side, third air duct 7 is formed between second centrifugal pipe 3 and separation pipe 4, one end of second centrifugal pipe 3 near drain port 121 is sealingly connected with the wall of separation pipe 4, and the wall of second centrifugal pipe 3 is provided with second air inlet hole 32, second air inlet hole 32, second air duct 6 and third air duct 7 are communicated.

[0027] Specifically, by setting multiple cyclone fins 21 on the outer wall of the first centrifugal tube 2 close to one end of the air inlet channel 111, and abutting against the inner wall of the shell 1, and making the multiple cyclone fins 21 all be arranged obliquely relative to the extension direction of the first air duct 5, and defining a cyclone channel 211 between two adjacent cyclone fins 21, on the one hand, when the airflow input by the air inlet channel 111 passes through the cyclone fins 21, the airflow can form a vortex airflow, so that the airflow can generate a centrifugal force, and by using the different mass characteristics of the water vapor and the gas in the airflow, the water vapor mixed in the airflow can be effectively separated, and the first separation of the water vapor mixed in the airflow can be realized. On the other hand, the cyclone channel 211 defined between two adjacent cyclone fins 21 can reduce the gap of the airflow input by the air inlet channel 111 into the first air duct 5, so as to play a compression effect on the airflow, so as to increase the flow rate of the airflow in the gas drying device 100, so as to ensure the separation efficiency of the airflow.

[0028] And since the air inlet channel 111, the first air duct 5 and the drain port 121 are communicated, after the airflow forms a vortex airflow and is centrifugally separated, the water separated for the first time in the airflow can be collected from the first air duct 5 to the drain port 121, so as to be discharged out of the gas drying device 100. It can be understood that in actual use, the shell 1 is vertically placed, that is, one end of the air inlet channel 111 and the air outlet channel 112 of the shell 1 is placed upward, and one end of the drain port 121 of the shell 1 is placed downward, so that the water separated by centrifugation can be collected along the first air duct 5 to the drain port 121 under the action of gravity, and the drain port 121 is connected with a water collecting container, so that the water collecting container can collect the water vapor discharged from the drain port 121, and at the same time, the sealing performance of the inside of the shell 1 can be ensured, so as to facilitate the smooth flow of the airflow in the shell 1 after centrifugation.

[0029] Further, since the separation tube 4 is arranged in the first centrifugal tube 2, one end of the separation tube 4 is in communication with the air outlet channel 112, the other end is closed, and the second air duct 6 is defined between the separation tube 4 and the first centrifugal tube 2, so that when the air flow after the first separation flows out of the first air duct 5, it can flow into the second air duct 6 in the first centrifugal tube 2 from the opening of the first centrifugal tube 2 close to the water outlet 121. The second centrifugal tube 3 is sleeved outside the separation tube 4, and the second centrifugal tube 3 is located on the side of the first air inlet hole 41 close to the water outlet 121, so that the third air duct 7 can be formed between the second centrifugal tube 3 and the separation tube 4, and the end of the second centrifugal tube 3 close to the water outlet 121 is sealingly connected with the wall of the separation tube 4, and the second air inlet hole 32 is arranged on the wall of the second centrifugal tube 3, and the second air inlet hole 32, the second air duct 6 and the third air duct 7 are in communication. Since the second air inlet hole 32 is arranged on the wall of the second centrifugal tube 3, the second air inlet hole 32 and the third air duct 7 inside the second centrifugal tube 3 can be tangentially arranged, so that the air flow after the first separation by the cyclone sheet 21 on the first centrifugal tube 2 can be bent by 90 degrees to flow into the third air duct 7 inside the second centrifugal tube 3, so as to spiral along the wall of the separation tube 4 in the third air duct 7, so that the air flow can generate centrifugal force again to perform second centrifugal separation, so as to separate the moisture in the air flow which is not separated during the first separation, and effectively improve the separation effect. The first air inlet hole 41 is arranged on the wall of the separation tube 4, and the second air duct 6 is in communication with the inside of the separation tube 4 through the first air inlet hole 41, so that after the air flow after the second centrifugal separation flows out of the third air duct 7, it can flow into the second air duct 6 again from the opening of the second centrifugal tube 3 close to the air outlet channel 112, and then enter the inside of the separation tube 4 through the first air inlet hole 41 on the wall of the separation tube 4, and then flow to the air outlet channel 112 from the opening of the separation tube 4, so as to be discharged from the air drying device 100, so as to collect the dried air.

[0030] In the process of the air flow from the first air duct 5 to the second air duct 6, the air flow will be bent by 180 degrees, and the flow direction of the air flow in the second air duct 6 is opposite to the direction of gravity, so as to effectively reduce the moisture separated by the air flow when entering the second air duct 6. In the process of the air flow from the second air duct 6 to the inside of the separation tube 4, since the separation tube 4 is arranged in the first centrifugal tube 2, and the air flow flows into the inside of the separation tube 4 through the first air inlet hole 41 on the wall of the separation tube 4 by 90 degrees, according to Bernoulli's principle, the flow rate of the air flow around the wall of the separation tube 4 will change, which causes the pressure of the air flow to change, so as to destroy the required pressure balance condition of the siphon effect in the first centrifugal tube 2, avoid the siphon effect of the air flow in the first centrifugal tube 2, and be beneficial to improve the separation efficiency of the air flow; and the air flow around the wall of the first centrifugal tube 2 will generate vortex and boundary layer effect, so as to further remove the moisture in the air flow.

[0031] Specifically, when the airflow flows in the first centrifugal pipe 2, the airflow will form a vortex in the second air duct 6 defined between the separation pipe 4 and the first centrifugal pipe 2 due to the obstruction of the separation pipe 4. 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.

[0032] Further, as a specific implementation manner of some embodiments of the present application, Figures 2 to 6 As shown in the figure, the first compression part 31 is arranged at the end of the second centrifugal pipe 3 close to the drain port 121, the first compression part 31 abuts against the inner wall of the first centrifugal pipe 2, and the third air inlet hole 311 is arranged on the first compression part 31, and the second air duct 6 is in communication with the first air duct 5 through the third air inlet hole 311.

[0033] Specifically, the first compression part 31 abuts against the inner wall of the first centrifugal pipe 2, the third air inlet hole 311 is arranged on the first compression part 31, and the second air duct 6 is in communication with the first air duct 5 through the third air inlet hole 311, that is, the first compression part 31 can abut against the inner wall of the first centrifugal pipe 2 near the pipe opening at the end of the first centrifugal pipe 2 close to the drain port 121, so that the airflow separated for the first time can only flow into the second air duct 6 through the third air inlet hole 311 of the first compression part 31 after flowing out of the first air duct 5, thereby reducing the gap of the airflow entering the second air duct 6 and compressing the airflow to increase the flow rate of the airflow in the second air duct 6 and effectively improve the separation efficiency of the airflow.

[0034] Further, as a specific implementation manner of some embodiments of the present application, Figures 2 to 6 As shown in the figure, the air drying device 100 further comprises a compression member 8, the first centrifugal pipe 2 is arranged in a spaced manner with the drain port 121, and the compression member 8 is arranged between the first centrifugal pipe 2 and the drain port 121, and the compression member 8 is provided with a plurality of compression holes 81.

[0035] Specifically, the first centrifugal pipe 2 is arranged in a spaced manner with the drain port 121, and the compression member 8 is arranged between the first centrifugal pipe 2 and the drain port 121, so that the compression member 8 can divide the inside of the shell 1, so that part of the airflow flowing out of the first air duct 5 can directly flow into the second air duct 6 from the space between the compression member 8 and the first centrifugal pipe 2, and the other part of the airflow will pass through the compression holes 81 of the compression member 8 for compression and speed increase after flowing to the bottom of the shell 1, and then flow into the second air duct 6, thereby further increasing the flow rate of the airflow in the second air duct 6 and improving the separation efficiency of the airflow.

[0036] Further, as a specific implementation manner of some embodiments of the utility model, as shown in Figures 2 to 4 The compression member 8 includes a second compression part 81 and a connecting rod part 82, one end of the connecting rod part 82 is connected with the second compression part 81, the other end is connected with one end of the separation pipe 4 close to the water outlet 121, and the compression hole 81 is arranged on the second compression part 81.

[0037] Specifically, one end of the connecting rod part 82 of the compression member 8 is connected with the second compression part 81, and the other end is connected with one end of the separation pipe 4 close to the water outlet 121, so that the compression member 8 can be installed on the separation pipe 4. The connecting rod part 82 and the separation pipe 4 can be connected by screwing, so that the connecting rod part 82 and the separation pipe 4 can be conveniently disassembled or installed.

[0038] Further, as a specific implementation manner of some embodiments of the utility model, as shown in Figures 2 to 5 The first centrifugal pipe 2 protrudes an installation edge 22 at one end close to the air inlet channel 111, the installation edge 22 includes a first connecting part 221 and an installation part 222, one end of the first connecting part 221 is connected with the pipe wall of the first centrifugal pipe 2, the other end is connected with the installation part 222, the installation part 222 is located outside the first centrifugal pipe 2, and a plurality of cyclone blades 21 are arranged on the outer side wall of the installation part 222.

[0039] Specifically, the installation edge 22 is protruded at one end of the first centrifugal pipe 2 close to the air inlet channel 111, the installation part 222 of the installation edge 22 is arranged outside the first centrifugal pipe 2, and a plurality of cyclone blades 21 are arranged on the outer side wall of the installation part 222, so that after the airflow input by the air inlet channel 111 is centrifuged by the cyclone blades 21, the water vapor separated in the airflow will not directly adhere to the pipe wall of the first centrifugal pipe 2 along the cyclone channel 211 between the cyclone blades 21, affecting the separation effect.

[0040] Further, as a specific implementation manner of some embodiments of the utility model, as shown in Figures 2 to 5 The installation part 222 is arranged in the extension direction of the second air duct 6, and an air gap 23 is arranged between the installation part 222 and the outer side wall of the first centrifugal pipe 2.

[0041] Specifically, after the airflow input by the air inlet channel 111 is centrifuged by the cyclone blades 21, the water vapor separated in the airflow will adhere to the installation part 222 and gather into droplets, therefore, arranging the installation part 222 in the extension direction of the second air duct 6 can make the droplets on the installation part 222 converge to the water outlet 121 under the action of gravity. In addition, since the air gap 23 is arranged between the installation part 222 and the outer side wall of the first centrifugal pipe 2, a gap can be formed between the installation part 222 and the outer side wall of the first centrifugal pipe 2, thereby effectively preventing the droplets from flowing to the pipe wall of the first centrifugal pipe 2 along the installation part 222.

[0042] Further, as a specific implementation manner of some embodiments of the present utility model, Figures 1 to 4 As shown in the figure, the shell 1 includes a cover 11 and a shell body 12, the cover 11 and the drain port 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 11, and the shell body 12 and the first centrifugal pipe 2 define the first air duct 5.

[0043] Specifically, the shell 1 includes the cover 11 and the shell body 12, and the cover 11 and the shell body 12 can be assembled, so that the first centrifugal pipe 2 and the separation pipe 4 can be installed in the shell body 12. Specifically, in the production process, the first centrifugal pipe 2 and the separation pipe 4 can be installed in the shell body 12 first, and then the cover 11 is assembled on the shell body 12, so that the installation of the first centrifugal pipe 2 and the separation pipe 4 is conveniently realized. The cover 11 and the drain port 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 11, and the air inlet channel 111 and the air outlet channel 112 are located on both sides of the cover 11. The shell body 12 and the first centrifugal pipe 2 can define the first air duct 5, so that the water vapor mixed in the airflow can be separated.

[0044] Further, as a specific implementation manner of some embodiments of the present utility model, Figures 1 to 4 As shown in the figure, the cover 11 is provided with a first connecting arm 113, and the first connecting arm 113 is threadedly connected with the shell body 12.

[0045] Specifically, the cover 11 is provided with the first connecting arm 113, and the first connecting arm 113 is threadedly connected with the shell body 12. The assembly or disassembly between the cover 11 and the shell body 12 can be conveniently realized through the threaded connection. 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 airflow in the shell body 12 has a problem or the first centrifugal pipe 2 and the separation pipe 4 have a fault, the shell cover 11 can be conveniently opened for fault checking and replacement of the corresponding parts.

[0046] Further, as a specific implementation manner of some embodiments of the present utility model, Figures 2 to 4 As shown in the figure, one end of the separation pipe 4 away from the drain port 121 is provided with a second connecting part 42, the second connecting part 42 penetrates the first centrifugal pipe 2, the inside of the cover 11 is provided with a second connecting arm 114, the second connecting arm 114 is communicated with the air outlet channel 112, one end of the second connecting part 42 is exposed outside the first centrifugal pipe 2 and is threadedly connected with the second connecting arm 114, and the other end of the second connecting part 42 abuts against the inner wall of the first centrifugal pipe 2 to fix the first centrifugal pipe 2.

[0047] Specifically, the second connecting portion 42 of the separation tube 4 is arranged through the first centrifugal tube 2, one end of the second connecting portion 42 is exposed outside the first centrifugal tube 2 and is threadedly connected with the second connecting arm 114 inside the cover body 11, and the other end of the second connecting portion 42 is abutted against the inner wall of the first centrifugal tube 2. When the first centrifugal tube 2 and the separation tube 4 are assembled together, the one end of the second connecting portion 42 of the separation tube 4 is exposed outside the first centrifugal tube 2, and the second connecting portion 42 and the second connecting arm 114 of the cover body 11 are threadedly connected. Therefore, the cover body 11 can be tightly connected with the separation tube 4 by rotating the cover body 11, so that the assembly process is more convenient and efficient. In addition, since the other end of the second connecting portion 42 can be abutted against the inner wall of the first centrifugal tube 2, the first centrifugal tube 2 can be fixed at the same time after the separation tube 4 is connected with the cover body 11, so that the assembly process can be effectively simplified, the installation steps and the required tools are reduced, and the assembly process is more convenient and efficient.

[0048] Further, as a specific implementation manner of some embodiments of the present application, as shown in Figures 2 to 5 The first centrifugal tube 2 is provided with a third connecting portion 24 near one end of the air inlet channel 111. One end of the third connecting portion 24 is abutted against the second connecting arm 114, and the second connecting portion 42 is arranged through the third connecting portion 24. The other end of the second connecting portion 42 is provided with an abutment arm 421, and the other end of the third connecting portion 24 is located in the second air duct 6 and is abutted against the abutment arm 421.

[0049] Specifically, the second connecting portion 42 is arranged through the third connecting portion 24, so that the one end of the second connecting portion 42 away from the drain port 121 can be exposed outside the first centrifugal tube 2 and is threadedly connected with the second connecting arm 114 inside the cover body 11. In addition, after the second connecting portion 42 is threadedly connected with the second connecting arm 114, the one end of the third connecting portion 24 can be abutted against the second connecting arm 114, and the abutment arm 421 at the other end of the second connecting portion 42 can be abutted against the other end of the third connecting portion 24, so as to clamp and fix the third connecting portion 24 between the second connecting arm 114 and the abutment arm 421 of the second connecting portion 42, thereby fixing the first centrifugal tube 2.

[0050] 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. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent replacement for some technical features. All these modifications and replacements shall belong to the protection scope of the claims of the present application.

Claims

1. A gas drying apparatus, characterized in that, include: The casing has an air inlet and an air outlet at one end and a drain outlet at the other end. A first centrifuge tube is disposed inside the housing. A first air duct is defined between the first centrifuge tube and the housing. The air inlet channel, the first air duct and the drain outlet are connected. A plurality of cyclone vanes are provided on the outer wall of the first centrifuge tube near the air inlet channel end, which abut against the inner wall of the housing. The plurality of cyclone vanes are obliquely arranged with respect to the extension direction of the first air duct. A cyclone channel is defined between two adjacent cyclone vanes. A separation tube is disposed inside the first centrifuge tube. One end of the separation tube is connected to the air outlet channel, and the other end is closed. A second air duct is defined between the separation tube and the first centrifuge tube. A first air inlet is provided on the tube wall of the separation tube, and the second air duct communicates with the interior of the separation tube through the first air inlet. The second centrifuge tube is sleeved outside the separation tube and is located on the side of the first air inlet near the drain outlet. A third air duct is formed between the second centrifuge tube and the separation tube. The end of the second centrifuge tube near the drain outlet is sealed to the tube wall of the separation tube. A second air inlet is provided on the tube wall of the second centrifuge tube. The second air inlet, the second air duct and the third air duct are connected.

2. The gas drying apparatus according to claim 1, characterized in that, The second centrifuge tube has a first compression section at one end near the drain outlet. The first compression section abuts against the inner wall of the first centrifuge tube. The first compression section has a third air inlet. The second air duct is connected to the first air duct through the third air inlet.

3. The gas drying apparatus according to claim 1, characterized in that, It also includes a compression component, wherein the first centrifuge tube and the drain outlet are spaced apart, the compression component is located between the first centrifuge tube and the drain outlet, and the compression component is provided with multiple compression holes.

4. The gas drying apparatus according to claim 3, characterized in that, The compression component includes a second compression part and a connecting rod part. One end of the connecting rod part is connected to the second compression part, and the other end is connected to the end of the separation pipe near the drain outlet. The compression hole is provided on the second compression part.

5. The gas drying apparatus according to any one of claims 1-4, characterized in that, The first centrifuge tube has a mounting edge protruding at one end near the air inlet channel. The mounting edge includes a first connecting part and a mounting part. One end of the first connecting part is connected to the tube wall of the first centrifuge tube, and the other end is connected to the mounting part. The mounting part is located on the outside of the first centrifuge tube, and a plurality of cyclone vanes are disposed on the outer wall of the mounting part.

6. The gas drying apparatus according to claim 5, characterized in that, The mounting part is arranged in the extension direction of the second air duct, and an air-avoiding groove is provided between it and the outer wall of the first centrifugal tube.

7. The gas drying apparatus according to claim 6, characterized in that, The housing includes a cover and a main body. The cover and the drain outlet are located at opposite ends of the housing. The air inlet channel and the air outlet channel are located inside the cover. The main body and the first centrifuge tube define the first air duct.

8. The gas drying apparatus according to claim 7, characterized in that, The cover is provided with a first connecting arm, which is threadedly connected to the shell body.

9. The gas drying apparatus according to claim 8, characterized in that, The separation tube is provided with a second connecting part at one end away from the drain outlet. The second connecting part passes through the outside of the first centrifuge tube. The cover is provided with a second connecting arm. The second connecting arm communicates with the air outlet channel. One end of the second connecting part is exposed outside the first centrifuge tube and is threadedly connected to the second connecting arm. The other end of the second connecting part abuts against the inner wall of the first centrifuge tube to fix the first centrifuge tube.

10. The gas drying apparatus according to claim 9, characterized in that, The first centrifuge tube has a third connecting part at one end near the air intake channel. One end of the third connecting part abuts against the second connecting arm. The second connecting part passes through the third connecting part. The other end of the second connecting part has a protruding abutting arm. The other end of the third connecting part is located in the second air duct and abuts against the abutting arm.

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