Automatic alternate operation type compressed air dewatering device

Abstract

The invention discloses an automatic alternate operation type compressed air dewatering device, which relates to the technical field of flue gas monitoring and comprises two dewatering tanks for removing moisture in compressed air and an automatic alternate replacement unit for automatically and alternately replacing the two dewatering tanks to perform dewatering operation, and air inlet branch pipes and air outlet branch pipes are arranged at the upper ends of the two water removal tanks correspondingly, the two air inlet branch pipes are both connected with a main air inlet pipe, and the two air outlet branch pipes are both connected with a main air outlet pipe. The two groups of dewatering tanks can be automatically and alternately replaced, and meanwhile, the particle dewatering agent in the dewatering tanks which do not participate in work is heated through the self-heating unit, so that water in the particle dewatering agent is evaporated, the water absorption of the particle dewatering agent is further recovered, and the two groups of dewatering tanks can be continuously and alternately used.

Description

Technical Field

[0001] The invention relates to the technical field of smoke monitoring, and in particular to an automatic alternating operation type compressed air dehumidification device. Background Art

[0002] Dilution CEMS is a technology used to monitor the concentration of pollutants in flue gas in real time. It dilutes and samples the flue gas through clean dilution gas to reduce the mass concentration of harmful gases in the flue gas, thereby reducing the harm to the system. In this process, the application of compressed gas dehydration technology is particularly important. This is because flue gas usually contains moisture. If it is not treated, the moisture may damage the monitoring instrument, affecting the accuracy of the measurement and the service life of the instrument. By setting up a dehydration device (which is a tank with a granular dehydrating agent inside to absorb water and dry the gas), the moisture in the compressed air can be effectively removed to ensure the dryness of the sample gas, thereby avoiding the interference of moisture on the measurement results, improving the accuracy of the measurement and the stability of the instrument. However, when dehydrating compressed gas, usually only one set of dehydration device is set up. During the real-time monitoring of flue gas, after the granular dehydrating agent reaches the maximum water absorption saturation state, it is necessary to stop injecting compressed gas and manually replace the dehydrating agent. The operation time of this process is too long, which is not conducive to the real-time monitoring of flue gas. Therefore, the present application provides an automatic alternating operation compressed air dehydration device to meet the needs. Summary of the invention

[0003] The purpose of the present application is to provide an automatic alternating compressed air dehydration device, which is used to solve the technical problem that only one set of dehydration devices is provided in the prior art, which is not conducive to the real-time monitoring of flue gas.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an automatic alternating compressed air dehydration device, comprising two dehydration tanks for removing moisture from compressed air and an automatic alternating replacement unit for automatically alternating the two dehydration tanks to perform dehydration operations; An air inlet branch pipe and an air outlet branch pipe are respectively arranged at the upper ends of the two dewatering tanks. The two air inlet branch pipes are both connected to the main air inlet pipe, and the two air outlet branch pipes are both connected to the main air outlet pipe.

[0005] As a preferred implementation in this embodiment, the automatic alternating replacement unit includes a bottom plate, two columns with magnets in the upper end grooves, four opening and closing valves, a return rod and a T-shaped rod; The two columns are fixed on the bottom plate and are respectively located directly below the corresponding water removal tanks. Linear springs are installed on the peripheries of the two columns, and the upper and lower ends of the linear springs are respectively fixedly connected to the lower end of the water removal tank and the upper end of the bottom plate; The upper ends of the two water removal tanks are provided with gear rods between the corresponding air inlet branch pipe and the air outlet branch pipe; The four opening and closing valves are respectively arranged on the corresponding inlet branch pipe and the outlet branch pipe, the inlet branch pipe and the outlet branch pipe are provided with telescopic sections, and the rotating shafts of the four opening and closing valves are all equipped with gears; The inner cavity of the dewatering tank is provided with a partition, and the two sides of the partition are respectively a drying cavity and an exhaust cavity, the lower end of the partition is in contact with a support net installed in the inner cavity of the dewatering tank, the granular dewatering agent is filled in the drying cavity, and a filter cotton layer is provided below the granular dewatering agent; The circular rod is fixed on the bottom plate and is arranged between the two water removal tanks. The lower end of the T-shaped rod passes through the circular limiting cavity arranged at the upper end of the circular rod and is connected to the first tooth plate. A second tooth plate is slidably arranged in the circular cavity of the circular rod, and extrusion slopes are arranged at both ends of the second tooth plate. The upper end of the second tooth plate is toothed with the first tooth plate through a transmission gear fixed on the circular rod.

[0006] As a preferred implementation manner in this embodiment, it also includes a self-heating unit, which is used to heat the granular dehydrating agent inside the dehydrating tank that does not participate in the work, so that the water in the granular dehydrating agent evaporates, thereby restoring the water absorption of the granular dehydrating agent.

[0007] As a preferred implementation in this embodiment, the self-heating unit includes an electric heating tube, a push switch for controlling the operation of the electric heating tube, and two exhaust pipes with one-way exhaust valves; The dewatering tank is provided with a heat insulation layer and a heat conduction layer from the outside, the electric heating tube is provided in the heat conduction layer, the push-type switch is electrically connected to the controller and the electric heating tube respectively, the two push-type switches are respectively located in the grooves provided at the upper ends of the corresponding columns, and the pressing ends of the push-type switches are located outside the grooves; The two exhaust pipes are respectively installed on the corresponding intake branch pipes.

[0008] As a preferred implementation manner in this embodiment, both of the two air intake branches are provided with expansion air bags, and the expansion air bags do not expand during normal water removal operations.

[0009] As a preferred implementation in this embodiment, the upper end of the gear rod is respectively provided with a first tooth segment and a second tooth segment, and the upper end of the first tooth segment is located below the upper end of the second tooth segment.

[0010] As a preferred implementation scheme in this embodiment, L-shaped baffles are provided on both side ends of the lower part of the return rod, the lower end of the second tooth plate is slidably connected to the return rod through a slider, and the two L-shaped baffles and both ends of the slider are respectively provided with a first elastic magnetic block and a second elastic magnetic block.

[0011] As a preferred implementation mode in this embodiment, it also includes two L-shaped vertical poles and two groups of sliding columns. The two groups of sliding columns are installed on the corresponding dewatering tanks and slide through the corresponding L-shaped vertical poles. Both of the L-shaped vertical poles are installed on the base plate.

[0012] In summary, the technical effects and advantages of the present invention are as follows: The present invention has a reasonable structure and can automatically realize the alternating replacement operation of two groups of dewatering tanks. At the same time, the granular dewatering agent inside the dewatering tank that is not involved in the work is automatically heated by the self-heating unit, and the water in the granular dewatering agent evaporates, thereby restoring the water absorption of the granular dewatering agent, so that the two groups of dewatering tanks can be used continuously and alternately. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the overall and partial enlarged structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the partially enlarged structure; Figure 3 for Figure 2 The middle part is a schematic diagram of the enlarged structure viewed from above; Figure 4 for Figure 1 Schematic diagram of partial cross-section structure of the water removal tank; Figure 5 for Figure 1 Center view and partial enlarged structural diagram.

[0015] In the figure: 1, bottom plate; 2, column; 3, linear spring; 4, magnet; 5, main air inlet pipe; 6, water removal tank; 61, heat insulation layer; 62, heat conductive layer; 7, gear rod; 8, telescopic section; 9, opening and closing valve; 10, outlet branch pipe; 11, air inlet branch pipe; 12, main air outlet pipe; 13, filter cotton layer; 14, support net; 15, partition; 16, exhaust chamber; 17, granular water removal agent; 18, reciprocating rod; 19, The second tooth plate; 20, the extrusion slope; 21, the transmission gear; 22, the T-shaped rod; 23, the circular limit cavity; 24, the first tooth plate; 25, the L-shaped baffle; 26, the slider; 27, the first elastic magnetic block; 28, the second elastic magnetic block; 29, the expansion airbag; 30, the first tooth segment; 31, the second tooth segment; 32, the push-type switch; 33, the exhaust pipe; 34, the electric heating tube; 35, the L-shaped vertical rod; 36, the sliding column. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Example: Reference Figure 1 The automatic alternating compressed air dehydration device shown comprises two dehydration tanks 6 for removing moisture from the compressed air and an automatic alternating replacement unit for automatically alternating the two dehydration tanks 6 to perform dehydration operations; An air inlet branch pipe 11 and an air outlet branch pipe 10 are respectively provided at the upper ends of the two water removal tanks 6 . The two air inlet branch pipes 11 are connected to the main air inlet pipe 5 , and the two air outlet branch pipes 10 are connected to the main air outlet pipe 12 .

[0018] As a preferred implementation in this embodiment, Figure 1-4 As shown, the automatic alternating replacement unit comprises a bottom plate 1, two columns 2 with magnets 4 in the grooves at the upper ends, four opening and closing valves 9, a reciprocating rod 18 and a T-shaped rod 22; The two columns 2 are fixed on the bottom plate 1 and are respectively located directly below the corresponding water removal tank 6. The peripheries of the two columns 2 are both installed with linear springs 3, and the upper and lower ends of the linear springs 3 are respectively fixedly connected to the lower end of the water removal tank 6 and the upper end of the bottom plate 1; The upper ends of the two water removal tanks 6 are provided with a gear rod 7 between the corresponding air inlet branch pipe 11 and the air outlet branch pipe 10; The four opening and closing valves 9 are respectively arranged on the corresponding inlet branch pipe 11 and the outlet branch pipe 10, and the inlet branch pipe 11 and the outlet branch pipe 10 are provided with a telescopic section 8, and the rotating shafts of the four opening and closing valves 9 are all equipped with gears; The inner cavity of the dewatering tank 6 is provided with a partition 15, and the two sides of the partition 15 are respectively a drying cavity and an exhaust cavity 16, the lower end of the partition 15 is in contact with a support net 14 installed in the inner cavity of the dewatering tank 6, and a granular dewatering agent 17 is filled in the drying cavity, and a filter cotton layer 13 is provided below the granular dewatering agent 17; The circular rod 18 is fixed on the base plate 1 and is arranged between the two water removal tanks 6. The lower end of the T-shaped rod 22 passes through the circular limit cavity 23 arranged at the upper end of the circular rod 18 and is connected to the first tooth plate 24. A second tooth plate 19 is slidably arranged in the circular cavity of the circular rod 18, and both ends of the second tooth plate 19 are provided with extrusion inclined surfaces 20. The upper end of the second tooth plate 19 is gear-connected with the first tooth plate 24 through a transmission gear 21 fixed on the circular rod 18.

[0019] At the beginning Figure 1 As shown, the opening and closing valves 9 on a group of air intake branch pipes 11 and a group of air outlet branch pipes 10 arranged on the left are in an open state, and the plug-in portion of the gear rod 7 arranged on the left is located above the two groups of gears on the left, and the opening and closing valves 9 on a group of air intake branch pipes 11 and a group of air outlet branch pipes 10 arranged on the right are in a closed state, and the plug-in portion of the gear rod 7 arranged on the right is located below the two groups of gears on the right, and at the same time, the cross bar at the upper end of the T-shaped rod 22 is located above the right gear rod 7 and forms a block for the gear rod 7 that has a tendency to move upward; During operation, the compressed gas enters the intake branch pipe 11 arranged on the left side through the main intake pipe 5, the moisture in the compressed gas is absorbed, the dry gas enters the exhaust chamber 16 and is finally discharged from the exhaust branch pipe 10. With the absorption of moisture, the overall weight of the water removal tank 1 is constantly compressing the linear spring 3 and causing the water removal tank 1 to move downward continuously. At this time, the distance between the lower end of the water removal tank 1 and the magnet 4 is constantly shortened. When the gear rod 7 on the left side is about to contact the gear, the magnetic force will drive the water removal tank 1 to move downward rapidly, and finally the lower end of the water removal tank 1 will contact the upper end of the column 2 (in this process, the left side The gear rod 7 will be gear-engaged with the two gears and close the two opening and closing valves 9 on the left, and finally complete the gear separation). When the dewatering tank 1 moves downward by the magnetic force, the bottom of the dewatering tank 1 will contact the extrusion slope 20 set on the left, so that the second gear plate 19 moves to the right. Through the transmission of the transmission gear 21, the T-shaped rod 22 moves to the left, and the right end of the T-shaped rod 22 is released from the obstruction of the upper end of the gear rod 7 on the right (at the same time, the left end of the T-shaped rod 22 is located directly above the left gear rod 7 to form a blockage). At this time, the dewatering tank 1 set on the right (the granular dewatering agent 17 inside) does not absorb moisture, resulting in the dewatering tank 1 The weight of the dewatering tank 1 is greatly reduced compared to that of the left side after absorbing moisture, resulting in the elastic force of the linear spring 3 being greater than the sum of the magnetic force and the weight of the right dewatering tank 1. Through the elastic force, the lower end of the right dewatering tank 1 is separated from the column 2, and the upper end of the right gear rod 7 contacts the right end of the T-shaped rod 22) and moves upward under the elastic force of the linear spring 3. The right gear rod 7 will be toothed with the two opening and closing valves 9 set on the right side so that the two opening and closing valves 9 are opened and finally the toothed separation is completed. At this time, the compressed gas will pass through the right dewatering tank 1 for dewatering operation. When the right dewatering tank 1 is operating, the left dewatering tank 1 is disassembled and replaced. The granular dehydrating agent 17 in the tank 1 is installed and restored to its original position after completion. At this time, under the elastic force of the linear spring 3, the toothed rod 7 on the right side conflicts with the left end of the T-bar 22 (the lower end of the dehydrating tank 1 on the left side contacts and separates from the left column 2). After the dehydrating tank 1 on the right side absorbs water and increases its weight to the maximum, it moves downward and is magnetically fixed to the upper end of the right column 2. The second toothed plate 19 moves to the right, and through the action of the transmission gear 21, the T-bar 2 moves to the left. The replaced dehydrating tank 1 on the right side is connected to the pipeline for dehydration. Two groups of dehydrating tanks 1 are provided, which can automatically realize the replacement and alternating operation, which is beneficial to the real-time monitoring of flue gas.

[0020] It should be noted that: 1. The granular dehydrating agent 17 can be made of silica gel particles; 2. A filter cotton layer 13 is provided to filter tiny particles in the gas path, reducing gas path pollution and maintenance; 3. An elastic cushion layer can be provided at the upper end of the column 2 for elastic buffering to reduce the collision between the lower end of the dehydrating tank 1 and the column 2.

[0021] As a preferred implementation in this embodiment, a self-heating unit is also included, which is used to heat the granular dehydrating agent 17 inside the dehydrating tank 1 that is not involved in the work, so that the water in the granular dehydrating agent 17 evaporates, thereby restoring the water absorption of the granular dehydrating agent 17.

[0022] The granular dehydrating agent 17 that is not working and absorbs moisture can be heated by the self-heating unit to evaporate the internal moisture, so that the granular dehydrating agent in the two groups of dehydrating tanks 1 can be reused (the two groups of dehydrating tanks 1 can be used continuously and alternately), and there is no need to manually replace the granular dehydrating agent 17, reducing unnecessary trouble.

[0023] As a preferred implementation in this embodiment, Figure 1 and 4 As shown, the self-heating unit includes an electric heating tube 34, a push switch 32 for controlling the operation of the electric heating tube 34, and two exhaust pipes 33 with one-way exhaust valves; The water tank 6 is provided with a heat insulating layer 61 and a heat conducting layer 62 from the outside, the electric heating tube 34 is provided in the heat conducting layer 62, the push switch 32 is electrically connected to the controller and the electric heating tube 34 respectively, the two push switches 32 are respectively located in the grooves provided at the upper ends of the corresponding columns 2, and the pressing ends of the push switches 32 are located outside the grooves; The two exhaust pipes 33 are respectively installed on the corresponding intake branch pipes 11 .

[0024] When the lower end of the dewatering tank 1 is fixed to the upper end of the column 2 by magnetic adsorption, the push switch 32 is squeezed, and the corresponding electric heating tube 34 works to heat the internal granular dewatering agent 17. Since the valve is closed, steam is discharged from the exhaust pipe 33 at this time. As the steam is discharged, the weight of the dewatering tank 1 is reduced. When the elastic force of the linear spring 3 is greater than the sum of the gravity of the dewatering tank 1 and the magnetic force it receives, the dewatering pipe 1 moves upward, and the upper end of the gear rod 7 contacts the end of the T-shaped rod 22, forming a movement barrier for the dewatering tank 1. At this time, since the distance between the dewatering tank 1 and the magnet 4 becomes larger, the magnetic force it receives decreases, and the elastic force of the linear spring 3 makes the dewatering tank 1 have an upward movement trend.

[0025] It should be noted that: First, when the lower end of the water removal tank 1 is in contact and separated from the upper end of the column 2, it will also be in contact and separated from the push switch 32. At this time, the electric heater will not work, and the electric heater 34 can be automatically started and stopped; second, when the water removal tank 1 is performing a water removal operation, the air pressure of the compressed gas is not enough to push the one-way air outlet valve to open the flow channel, and the gas cannot be discharged from the exhaust pipe 33.

[0026] As a preferred implementation in this embodiment, Figure 5As shown, the two air intake branches 11 are both provided with expansion air bags 29 . When the water removal operation is normally performed, the expansion air bags 29 do not expand.

[0027] Since it takes a certain amount of time for the two dewatering tanks 1 to start the automatic replacement and alternation and complete the automatic replacement and alternation (referring to the interval time from the closing of the two sets of opening and closing valves 9 on one side to the opening of the two sets of opening and closing valves 9 on the other side), an expansion air bag 29 is provided for buffering. During buffering, the compressed gas will cause the expansion air bag 29 to expand, thereby preventing the gas inside the pipeline from increasing rapidly (the rapid increase in air pressure will cause the compressed gas to quickly flow through the granular dewatering agent 17 when the opening and closing valve 9 is subsequently opened, thereby reducing the contact time with the granular dewatering agent 17, which may easily cause a decrease in the dewatering effect).

[0028] As a preferred implementation in this embodiment, Figure 5 As shown, the upper end of the gear rod 7 is respectively provided with a first tooth segment 30 and a second tooth segment 31 , and the upper end of the first tooth segment 30 is located below the upper end of the second tooth segment 31 .

[0029] After the granular dehydrating agent 17 that has absorbed water in the dehydrating tank 1 is heated to remove water, the air pressure in the dehydrating tank 1 will increase. In order to prevent the gas from flowing back due to excessive air pressure, the upper end of the first tooth segment 30 is located below the upper end of the second tooth segment 31. The opening and closing valve 9 on the outlet branch pipe 10 can be opened first to exhaust the gas, and then the opening and closing valve 9 on the inlet branch pipe 11 can be opened subsequently to prevent the gas from flowing back.

[0030] As a preferred implementation in this embodiment, Figure 3 As shown, L-shaped baffles 25 are provided on both sides of the lower end of the revolving rod 18, the lower end of the second tooth plate 19 is slidably connected to the revolving rod 18 through a slider 26, and the two L-shaped baffles 25 and the two ends of the slider 26 are respectively provided with a first elastic magnetic block 27 and a second elastic magnetic block 28.

[0031] In order to prevent the collision between the dewatering tank 1 and the column 2, which would cause the T-shaped rod 22 to move too much and fail to block the left or right gear rod 7, two L-shaped baffles 25 and a first elastic magnetic block 27 and a second elastic magnetic block 28 are provided to limit the movement of the second gear plate 19, and the second gear rod 19 is positioned after it moves into place through the magnetic attraction force formed between the first elastic magnetic block 27 and the second elastic magnetic block 28. At the same time, the first elastic magnetic block 27 and the second elastic magnetic block 28 have a certain elasticity and can provide a certain degree of collision buffering.

[0032] It should be noted that the first elastic magnetic block 27 and the second elastic magnetic block 28 have opposite magnetic poles at opposite ends, thereby forming a magnetic attraction force.

[0033] As a preferred implementation in this embodiment, Figure 5As shown, it also includes two L-shaped vertical rods 35 and two groups of sliding columns 36. The two groups of sliding columns 36 are installed on the corresponding water removal tanks 6 and slide through the corresponding L-shaped vertical rods 35. The two L-shaped vertical rods 35 are both installed on the base plate 1.

[0034] The purpose of providing the L-shaped vertical rod 35 and the sliding column 36 is to ensure the stability of the water removal tank 1 when it moves up and down.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic alternating operation type compressed air dehydration device, characterized in that: It comprises two dewatering tanks (6) for removing moisture from compressed air and an automatic alternating replacement unit for automatically alternating the two dewatering tanks (6) to perform dewatering operations; An air inlet branch pipe (11) and an air outlet branch pipe (10) are respectively provided at the upper ends of the two dewatering tanks (6); the two air inlet branch pipes (11) are both connected to the main air inlet pipe (5), and the two air outlet branch pipes (10) are both connected to the main air outlet pipe (12).

2. The automatic alternating operation type compressed air dehydration device according to claim 1, characterized in that: The automatic alternating replacement unit comprises a base plate (1), two columns (2) with magnets (4) in grooves at the upper ends, four opening and closing valves (9), a retractable rod (18) and a T-shaped rod (22); The two uprights (2) are both fixed on the bottom plate (1) and are respectively located directly below the corresponding dewatering tank (6); a linear spring (3) is installed on the periphery of the two uprights (2), and the upper and lower ends of the linear spring (3) are respectively fixedly connected to the lower end of the dewatering tank (6) and the upper end of the bottom plate (1); A gear rod (7) is provided at the upper ends of the two water removal tanks (6) between the corresponding air inlet branch pipe (11) and the air outlet branch pipe (10); The four opening and closing valves (9) are respectively arranged on the corresponding inlet branch pipe (11) and the outlet branch pipe (10), the inlet branch pipe (11) and the outlet branch pipe (10) are provided with telescopic sections (8), and the rotating shafts of the four opening and closing valves (9) are all equipped with gears; The inner cavity of the dewatering tank (6) is provided with a partition (15), and the two sides of the partition (15) are respectively a drying cavity and an exhaust cavity (16), the lower end of the partition (15) is in contact with a support net (14) installed in the inner cavity of the dewatering tank (6), the granular dewatering agent (17) is filled in the drying cavity, and a filter cotton layer (13) is provided below the granular dewatering agent (17); The reciprocating rod (18) is fixed on the bottom plate (1) and is arranged between the two water removal tanks (6); the lower end of the T-shaped rod (22) passes through a reciprocating limiting cavity (23) arranged at the upper end of the reciprocating rod (18) and is connected to a first tooth plate (24); a second tooth plate (19) is slidably arranged in the reciprocating cavity of the reciprocating rod (18), and both ends of the second tooth plate (19) are provided with extrusion inclined surfaces (20); the upper end of the second tooth plate (19) is tooth-connected with the first tooth plate (24) via a transmission gear (21) fixed to the reciprocating rod (18).

3. The automatic alternating operation type compressed air dehydration device according to claim 2, characterized in that: It also comprises a self-heating unit, which is used to heat the granular dehydrating agent (17) inside the dehydrating tank (6) that is not involved in the work, so that the water in the granular dehydrating agent (17) evaporates, thereby restoring the water absorption of the granular dehydrating agent (17).

4. The automatic alternating operation type compressed air dehydration device according to claim 3, characterized in that: The self-heating unit comprises an electric heating tube (34), a push switch (32) for controlling the operation of the electric heating tube (34), and two exhaust pipes (33) with one-way exhaust valves; The dewatering tank (6) is provided with a heat insulating layer (61) and a heat conducting layer (62) from the outside, the electric heating tube (34) is provided in the heat conducting layer (62), the push-type switch (32) is electrically connected to the controller and the electric heating tube (34) respectively, the two push-type switches (32) are respectively located in grooves provided at the upper ends of the corresponding columns (2), and the pressing ends of the push-type switches (32) are located outside the grooves; The two exhaust pipes (33) are respectively mounted on the corresponding intake branch pipes (11).

5. The automatic alternating operation type compressed air dehydration device according to claim 2, characterized in that: An expansion air bag (29) is installed on each of the two air intake branch pipes (11); when a normal water removal operation is performed, the expansion air bag (29) does not expand.

6. The automatic alternating operation type compressed air dehydration device according to claim 1 or 5, characterized in that: The upper end of the toothed rod (7) is respectively provided with a first tooth segment (30) and a second tooth segment (31), and the upper end of the first tooth segment (30) is located below the upper end of the second tooth segment (31).

7. The automatic alternating operation type compressed air dehydration device according to claim 2, characterized in that: L-shaped baffles (25) are provided on both side ends of the lower part of the revolving rod (18); the lower end of the second tooth plate (19) is slidably connected to the revolving rod (18) via a slider (26); and a first elastic magnetic block (27) and a second elastic magnetic block (28) are respectively provided at both ends of the two L-shaped baffles (25) and the slider (26).

8. The automatic alternating operation type compressed air dehumidification device according to claim 2, characterized in that: It also comprises two L-shaped vertical rods (35) and two groups of sliding columns (36), wherein the two groups of sliding columns (36) are mounted on the corresponding water removal tanks (6) and slide through the corresponding L-shaped vertical rods (35), and the two L-shaped vertical rods (35) are both mounted on the bottom plate (1).

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