CN111482063A

CN111482063A - Filtering absorber

Info

Publication number: CN111482063A
Application number: CN202010322643.3A
Authority: CN
Inventors: 张乐; 姚漪桦
Original assignee: Hangzhou Tengruiyuan Civil Air Defense Engineering Co ltd
Current assignee: Hangzhou Tengruiyuan Civil Air Defense Engineering Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-08-04
Anticipated expiration: 2040-04-22
Also published as: CN111482063B

Abstract

The invention relates to a filter absorber, which comprises a shell, an air inlet and an air outlet which are arranged at two ends of the shell, an air inlet diffuser, a fine filter, a toxin filtering unit and an air outlet diffuser which are arranged in the shell, wherein an air inlet pipeline is arranged at the air inlet; the first hygrometer is used for detecting the relative humidity of the air in the air inlet pipeline. The invention can dehumidify the gas with relative humidity larger than the preset value, and then the gas is purified by the fine filter and the toxin filtering unit, thereby avoiding the influence of overhigh relative humidity of the gas on the work of the equipment.

Description

Filtering absorber

Technical Field

The invention relates to the technical field of civil air defense equipment, in particular to a filter absorber.

Background

The filtering absorber is commonly used in civil air defense engineering, and the equipment for absorbing and purifying air not only has a dust removal function, but also has a disinfection function.

The utility model discloses a chinese utility model patent with grant publication number CN203227363U discloses a novel filtering absorber, it includes the casing the inside toxicity filtering unit that is equipped with of casing it is equipped with the secondary filter to strain toxicity unit below the secondary filter below is equipped with the ripples baffle that disappears be equipped with plasma generator on the ripples baffle that disappears set up air inlet and gas outlet respectively at the casing both ends. The utility model discloses a simple structure, purifying effect is good, and the price/performance ratio is higher, long service life.

The above prior art solutions have the following drawbacks: the use of the filter absorber is affected by humidity, and generally when the relative humidity of the gas is greater than 90, the problems of efficiency reduction and even failure of a fine filter and a toxin filtering unit in the filter absorber are easily caused.

Disclosure of Invention

In view of the disadvantages of the prior art, it is an object of the present invention to provide a filter absorber that can operate at high relative humidity of the input gas. The air is dehumidified, so that the normal work of the fine filter and the toxin filtering unit is ensured.

The above object of the present invention is achieved by the following technical solutions: a filter absorber comprises a shell, an air inlet and an air outlet which are arranged at two ends of the shell, an air inlet diffuser, a fine filter, a toxin filtering unit and an air outlet diffuser which are arranged in the shell and distributed along the direction from the air inlet to the air outlet, wherein an air inlet pipeline is arranged at the air inlet, a first hygrometer, a controller and a dehumidifying device are sequentially arranged on the air inlet pipeline, a bypass pipe is arranged on the air inlet pipeline, one end of the bypass pipe is connected between the first hygrometer and the dehumidifying device to form a bypass inlet, the other end of the bypass pipe is connected between the dehumidifying device and the air inlet to form a bypass outlet, a first valve and a second valve are arranged on the air inlet pipeline, a third valve is arranged on the bypass pipe, the first valve is positioned between the bypass inlet and the dehumidifying device, and the second valve is positioned between the bypass outlet and; the first hygrometer is used for detecting the relative humidity of air in the air inlet pipeline; the controller is simultaneously electrically connected with the first hygrometer, the first valve, the second valve and the third valve, and is used for receiving the electric signal detected by the first hygrometer, opening the first valve and the second valve and closing the third valve when the relative humidity of the air is greater than or equal to a set value; and when the relative humidity of the air is less than the set value, closing the first valve and the second valve and opening the third valve.

By adopting the technical scheme, when the device is used, the relative humidity of the gas sent into the gas inlet pipeline is detected by the first hygrometer, the detected data is transmitted to the controller in the form of an electric signal, the controller compares the detected data according to the preset relative humidity, when the detected humidity is greater than the preset value, the controller controls the third valve to be closed, the first valve and the second valve are opened, the gas is introduced into the dehumidifying device to be dehumidified, the dehumidified gas enters the gas inlet again, the gas is uniformly distributed by the intake diffusion gas, then the gas is introduced into the fine filter to be filtered, and then the gas is introduced into the toxin filtering unit and finally is output through the air outlet diffuser and the gas outlet; utilize first hygrometer, controller and the cooperation of dehydrating unit, can make during relative humidity is less than the gas of default and sends into the air inlet through the bypass pipe, when gaseous relative humidity is higher than the default, gaseous dehumidification through dehydrating unit reduces gaseous relative humidity, then gets into the air inlet for the relative humidity that gets into the gas of secondary filter and toxin filtering unit carries out the reduction of certain degree, thereby guarantees the normal operating of gas particulate filter.

The present invention in a preferred example may be further configured to: the dehumidification device is including setting gradually first mesh board, sponge section, the second mesh board between first valve and the second valve and being used for driving first mesh board, the mutual first driving piece that is close to of second mesh board or keeps away from, the admission line diapire is connected with hydrophobic pipeline, is provided with hydrophobic valve on the hydrophobic pipeline.

Through adopting above-mentioned technical scheme, gaseous entering dehydrating unit is back, gets into the sponge section through first mesh board, utilizes the sponge to absorb moisture. Then through the output of second mesh board, during rethread air inlet got into the secondary filter, after the sponge absorbed water, be close to through first mesh board of first driving piece drive or second mesh board to extrude the sponge section, thereby reduce the absorbent moisture of sponge section, the water of extruding gets into hydrophobic pipeline, and discharges from hydrophobic valve department.

The present invention in a preferred example may be further configured to: the first driving part comprises a driving motor, a rack and a gear, the gear is rotatably installed on the air inlet pipeline, the driving motor is installed on the air inlet pipeline, an output shaft is coaxially connected with the gear, the rack is arranged on the first mesh plate and is arranged along the length direction of the air inlet pipeline, and the rack is meshed with the gear.

Through adopting above-mentioned technical scheme, drive gear through driving motor and rotate, then drive the rack removal of meshing to drive first mesh board and be close to and keep away from the second mesh board, realize the extrusion drainage to the sponge section when being close to, make the sponge section reconversion when keeping away from.

The present invention in a preferred example may be further configured to: be provided with supplementary drying device on the admission line, supplementary drying device includes first connecting pipe, second connecting pipe, fourth valve and fan, and the fourth valve sets up on the admission line and is located the bypass export one side back to the second valve, first connecting pipe one end is connected the other end with the fan air outlet and is connected with the admission line, and is located between first valve and the first mesh board with the admission line junction, second connecting pipe one end is connected the other end with the fan air intake and is connected with the admission line, and is located between bypass export and the fourth valve with the admission line junction.

Through adopting above-mentioned technical scheme, when the gaseous relative humidity in the admission line is lower, can utilize the fan to extract gas repeatedly and make gas carry out the drying of certain degree to the sponge section through the sponge section repeatedly to reduce the inside moisture content of sponge section after the crowded water, thereby carry out regeneration to the sponge section to a certain extent.

The present invention in a preferred example may be further configured to: and an air outlet of the fan is connected with a third connecting pipe for sucking outside air, and a fifth valve is arranged on the third connecting pipe.

Through adopting above-mentioned technical scheme, can directly absorb near the air of filtering absorber mounted position through the third connecting pipe and dry it through the sponge section to the sponge after the wringing to provide more dry sponges, ensure that the sponge section has better moisture absorption effect.

The present invention in a preferred example may be further configured to: the air inlet pipeline is provided with a dehumidification section, the dehumidification device is arranged in the dehumidification section, and the dehumidification section is detachably connected with the air inlet pipeline through a connecting piece.

Through adopting above-mentioned technical scheme, the connection can be dismantled to the dehumidification section, can conveniently dismantle the dehumidification device on dehumidification section and the dehumidification section together and get off to overhaul, clear up or change.

The present invention in a preferred example may be further configured to: the connecting piece includes adapter sleeve and revolves to first connecting thread, the second connecting thread the same with the pitch, first connecting thread sets up on the admission line outer wall, second connecting thread sets up on the outer wall of dehumidification section, adapter sleeve's both ends overlap respectively locate on the outer wall of admission line, dehumidification section and with first screw thread section, second screw thread section threaded connection, the admission line stretches into and is provided with first sealing washer between adapter sleeve's part and the adapter sleeve, adapter sleeve is provided with the second sealing washer on being close to the inner wall of dehumidification section, the tip of dehumidification section orientation admission line is contradicted on the terminal surface of second sealing washer.

Through adopting above-mentioned technical scheme, during the use, rotate adapter sleeve earlier, make adapter sleeve keep away from dehumidification section reverse movement earlier, thereby the space of installation dehumidification section is spared, then place the dehumidification section between both ends admission line, adapter sleeve keeps away from the tip that the one end of admission line aimed at the dehumidification section, then rotate adapter sleeve, make adapter sleeve rotate on one side, move to dehumidification section direction on one side, the tip that reaches the dehumidification section is contradicted each other with the terminal surface of second sealing washer, accomplish the installation of dehumidification section one end and admission line, the installation of the other end of dehumidification section also operates according to above-mentioned step, thereby accomplish the installation work of whole section dehumidification section.

The present invention in a preferred example may be further configured to: the outer wall of the dehumidification section is provided with a replacing opening, the replacing opening is detachably provided with a cover plate, and the length of the replacing opening is larger than the length of the sponge segment.

Through adopting above-mentioned technical scheme, open the apron, can take out, change the sponge section through changing the mouth.

The present invention in a preferred example may be further configured to: the utility model discloses a dehumidification section, including dehumidification section, apron, connecting piece, locking bolt, the bottom and the fixed screw threaded connection of locking bolt, the department of dehumidification section outer wall is close to and changes mouthful department is provided with the bulge loop, and the storage tank has been seted up on the bulge loop surface, has seted up fixed screw on the bulge loop surface, and fixed screw is located the storage tank and changes between the mouth, the apron is changed mouthful inlaying including the embedding and establishes the portion and set up in inlaying the connection piece of establishing the portion along the both ends of dehumidification section length direction, and connection piece surface and bulge loop surface laminating are worn to be equipped.

By adopting the technical scheme, the installation sealing performance between the replacement port and the cover plate can be enhanced by the silica gel sealing layer, the cover plate is re-coated with the silica gel sealing layer for sealing after being opened once, and the silica gel permeating between the convex ring and the connecting sheet is stored through the accommodating groove, so that the silica gel is prevented from further permeating into the replacement port; the containing groove can be cleaned after the cover plate is opened every time, and the cover plate and the replacing port are convenient to disassemble and good in sealing performance.

The present invention in a preferred example may be further configured to: and a second hygrometer is arranged between the second valve and the bypass outlet and is electrically connected with the controller.

By adopting the technical scheme, the relative humidity of the gas before the gas is introduced into the gas inlet is detected by the second hygrometer, so that the relative humidity of the gas before the gas enters the fine filter meets the requirement.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the sponge section is used for dehumidifying the gas with high relative humidity, so that the relative humidity of the gas is reduced, and then the gas enters the shell for filtering and toxin filtering, so that the normal operation of the equipment is ensured;

2. the inner part of the dehumidification section can be maintained and replaced by taking down the cover plate, so that the service life is longer;

3. can drive first mesh board extrusion sponge section through driving motor and carry out the regeneration of sponge section, also can drive relatively dry gas and outside air through the sponge section at the dry sponge section of certain extent through the fan.

Drawings

Fig. 1 is a schematic structural diagram of a filter absorber of the present embodiment, which is used to show a housing structure of the filter absorber.

Fig. 2 is a schematic structural diagram of a filter absorber of the present embodiment, which is used to show the installation structure of the bypass pipe, the intake pipe and the dehumidifying device.

Fig. 3 is a schematic structural diagram of a filter absorber of the present embodiment, which is used to show the installation position of the cover plate and the structure of the auxiliary drying device.

Fig. 4 is a sectional view of a filter absorber of the present embodiment.

Fig. 5 is an enlarged view at a in fig. 4.

Fig. 6 is a schematic structural diagram of a dehumidifying device of a filter absorber according to the present embodiment.

Fig. 7 is a schematic structural diagram of a dehumidification section of the filter absorber of the present embodiment with a cover plate removed.

Fig. 8 is an exploded view of the cover plate and locking bolt of a filter absorber of this embodiment.

Reference numerals: 1. a housing; 11. an air inlet; 12. an air inlet diffuser; 13. a fine filter; 14. a toxin filtering unit; 15. an air outlet diffuser; 16. an air outlet; 2. an air intake duct; 21. a first air intake duct; 22. a second air intake duct; 3. a dehumidification section; 31. a drain pipe; 32. a drain valve; 4. a bypass pipe; 41. a bypass inlet; 42. a bypass outlet; 5. a connecting member; 51. connecting a sleeve; 52. a first connecting thread; 53. a second connecting thread; 511. a threaded segment; 512. a first seal ring; 513. a second seal ring; 514. an annular step; 61. a first valve; 62. a second valve; 63. a third valve; 64. a first hygrometer; 65. a second hygrometer; 7. a dehumidification device; 71. a first mesh plate; 72. a sponge section; 73. a second mesh plate; 74. a first driving member; 741. a drive motor; 742. a rack; 743. a gear; 744. a rack slot; 81. replacing the port; 82. a cover plate; 83. a convex ring; 84. a containing groove; 85. connecting sheets; 86. fixing screw holes; 87. locking the bolt; 88. a silica gel sealing layer; 9. an auxiliary drying device; 91. a first connecting pipe; 92. a second connecting pipe; 93. a fourth valve; 94. a fan; 95. a third connecting pipe; 96. a fifth valve; 97. a sixth valve; 98. and a seventh valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the filtering absorber disclosed by the present invention comprises a housing 1, an air inlet 11 and an air outlet 16 arranged at two ends of the housing 1, an air inlet diffuser 12 arranged in the housing 1 and distributed along the direction from the air inlet 11 to the air outlet 16, a fine filter 13, a toxin filtering unit 14 and an air outlet diffuser 15, wherein the air inlet 11 is connected with an air inlet pipe 2, the air inlet pipe 2 comprises a first air inlet pipe 21 and a second air inlet pipe 22, a dehumidification section 3 is connected between the first air inlet pipe 21 and the second air inlet pipe 22, and one end of the second air inlet pipe 22 far away from the first air inlet pipe 21 is connected with the air inlet 11.

As shown in fig. 1 and 2, a bypass pipe 4 is connected to the first intake duct 21, the bypass pipe 4 is connected to the second intake duct 22 around the dehumidification section 3, a bypass inlet 41 is provided at a connection point of the bypass pipe 4 and the first intake duct 21, and a bypass outlet 42 is provided at a connection point of the bypass pipe 4 and the second intake duct 22.

As shown in fig. 3, the first air inlet duct 21 and the dehumidifying section 3, and the dehumidifying section 3 and the second air inlet duct 22 are connected by the connecting member 5.

As shown in fig. 4 and 5, the connecting member 5 includes a connecting sleeve 51, a first connecting thread 52 and a second connecting thread 53, the first connecting thread 52 is disposed on the first air inlet duct 21, the second connecting thread 53 is disposed on the second air inlet duct 22, and threaded sections 511 respectively engaged with the first connecting thread 52 and the second connecting thread 53 are disposed on inner walls of two ends of the connecting sleeve 51, and are threadedly connected with the first air inlet duct 21 and the second air inlet duct 22 through the threaded sections 511. The inner wall of the connecting sleeve 51 is provided with a first sealing ring 512 and a second sealing ring 513, the first sealing ring 512 is positioned on one side of the first connecting thread 52 facing the dehumidification section 3 and abuts against the outer wall of the first air inlet pipeline 21, the inner wall of the connecting sleeve 51 is provided with an annular step 514 facing the second air inlet pipeline 22, the second sealing ring 513 is fixed on the surface of the annular step 514, the inner diameter of the annular step 514 is smaller than that of the second air inlet pipeline 22, and during connection, the end part of the second air inlet pipeline 22 abuts against the second sealing ring 513.

Install first valve 61 on the first inlet duct 21, install second valve 62 on the second air inlet 11, first valve 61 is located between bypass entry 41 and the dehumidification section 3, second valve 62 is located between bypass export 42 and the dehumidification section 3, bypass entry 41 department installs third valve 63, install dehydrating unit 7 on the dehumidification section 3, install first hygrometer 64 and controller on the first inlet duct 21, first hygrometer 64 installs in the one side that the dehumidification section 3 is carried forward to bypass entry 41. A second hygrometer 65 is mounted on the second intake duct 22, the second hygrometer 65 is mounted between the bypass outlet 42 and the second valve 62, and the controller is electrically connected to the first hygrometer 64, the second hygrometer 65, the first valve 61, the second valve 62, and the third valve 63. The first hygrometer 64, the second hygrometer 65 and the controller are all prior art, and those skilled in the art can select them according to actual situations, which are not described herein.

As shown in fig. 5 and 6, the dehumidifying apparatus 7 includes a first mesh plate 71, a sponge section 72, a second mesh plate 73, and a first driving member 74, and the first driving member 74 includes a driving motor 741, a rack 742, and a gear 743.

Second mesh plate 73 is fixed in dehumidification section 3, first mesh plate 71 slides in dehumidification section 3, rack slot 744 has been seted up to dehumidification section 3 inner wall, rack slot 744 extends along dehumidification section 3 length direction, driving motor 741 installs on dehumidification section 3 outer wall, the output shaft stretches into rack slot 744 and with gear 743 coaxial coupling, rack 742 is parallel with dehumidification section 3 length direction and meshes with gear 743, sponge section 72 installs between first mesh plate 71 and second mesh plate 73, and both ends and first mesh plate 71, second mesh plate 73 is connected, when making driving motor 741 rotate, first mesh plate 71 removes in dehumidification section 3, thereby be close to or keep away from second mesh plate 73, thereby extrusion and the reseing to sponge section 72.

As shown in fig. 7, the bottom of the dehumidifying section 3 is connected with a drain pipe 31, the drain pipe 31 is located below the sponge section 72, and a drain valve 32 is connected to the drain pipe 31.

As shown in fig. 2 and 3, an auxiliary drying device 9 is disposed on the air inlet duct 2, the auxiliary drying device 9 includes a first connecting pipe 91, a second connecting pipe 92, a fourth valve 93, and a fan 94, the first connecting pipe 91 connects an air outlet of the fan 94 with the air inlet duct 2, and a communication position between the first connecting pipe 91 and the air inlet duct 2 is located on a side of the first valve 61 opposite to the bypass inlet. The second connecting pipe 92 is connected to an air inlet of the blower 94, and the other end of the second connecting pipe is connected to the air inlet pipe 2 at a position between the bypass outlet 42 and the fourth valve 93. The first connection pipe 91 is provided with a sixth valve 97, and the second connection pipe 92 is provided with a seventh valve 98. An air outlet of the fan 94 is connected with a third connecting pipe 95 for sucking the outside air, and the third connecting pipe 95 is provided with a fifth valve 96.

As shown in fig. 7 and 8, the outer wall of the dehumidification section 3 is provided with a replacement opening 81, a cover plate 82 is arranged on the replacement opening 81, and the length of the replacement opening 81 is greater than the total length of the sponge section 72, the first mesh plate 71 and the second mesh plate 73.

A convex ring 83 integrally protrudes from the outer wall of the dehumidification section 3, the convex ring 83 is arranged along the edge of the replacement port 81, a containing groove 84 with the same shape as the convex ring 83 is formed in the side wall of the convex ring 83, the side wall of the convex ring 83 between the containing groove 84 and the replacement port 81 is provided with a plurality of fixing screw holes 86, a connecting sheet 85 is arranged at the edge of the cover plate 82, the connecting sheet 85 is identical to the convex ring 83 in shape, when the cover plate 82 covers the replacement port 81, the inner wall of the connecting sheet 85 is attached to the outer wall of the convex ring 83, a plurality of locking bolts 87 penetrate through the connecting sheet 85, the locking bolts 87 are in threaded connection with the fixing screw holes 86, a silica gel sealing layer 88 is arranged on the end faces of the convex ring 83 and the connecting sheet 85, and after the cover plate 82 covers the silica gel sealing layer 88. The silica gel sealing layer 88 is broken by a tool, then the sponge section 72 can be replaced by opening the cover plate 82, the cover plate 82 is covered after the replacement is completed, the locking bolt 87 is screwed down, and then the silica gel is used for sealing again to form the silica gel sealing layer 88.

The implementation principle of the embodiment is as follows: when the gas humidity sensor is used, the fourth valve 93 is in an open state, all the other valves are in a closed state, a preset relative humidity value is set, the relative humidity used here is 90%, gas enters through the gas inlet pipeline 2, the first hygrometer 64 detects the relative humidity of the entering gas, when the relative humidity is higher than 90%, the controller receives an electric signal of the first hygrometer 64, then the first valve 61 and the second valve 62 are controlled to be opened, the third valve 63 is closed, the gas enters the first mesh plate 71 after passing through the first valve 61, then moisture is absorbed through the sponge section 72, after moisture is absorbed, the gas enters the gas inlet 11 through the second mesh plate 73 and the third valve 63, then is purified through the air inlet diffuser 12, the fine filter 13 and the toxin filtering unit 14, and then is discharged through the air outlet diffuser 15 and the gas outlet 16.

When the relative humidity detected by the first hygrometer 64 is lower than 90%, the controller receives an electric signal from the first hygrometer 64 and controls the third valve 63 to open, the first valve 61 and the second valve 62 are closed, the gas enters the gas inlet 11 through the bypass pipe 4, is purified through the inlet diffuser 12, the fine filter 13 and the toxin filtering unit 14, and is then discharged through the outlet diffuser 15 and the gas outlet 16.

The second hygrometer 65 is used to measure the relative humidity of the gases exiting the dehumidifying section 3, when the measured relative humidity is high, the sponge section 72 needs to be wrung or dried or replaced.

The first mesh plate 71 is driven by the driving part to move towards the second mesh plate 73, so that the sponge section 72 is extruded to drain, and the extruded water enters the drainage pipeline 31 and is discharged through the drainage valve 32.

When the relative humidity of entering gas is lower, can be through opening fifth valve 96, sixth valve 97, close fourth valve 93, third valve 63, open fan 94 for the air current comes to dry sponge section 72 through sponge section 72 repeatedly, when the gas dryness degree is low in the inlet duct, can inhale external environment air feed through third connecting pipe 95 and dry sponge section 72, when dry sponge section 72, can predict the dry condition through second hygrometer 65. The cover plate 82 can be detached by scratching the silica gel sealing layer 88 and unscrewing the locking bolt 87, the accommodating groove 84 can be cleaned after detachment, and the silica gel which permeates between the connecting sheet 85 and the convex ring 83 when the silica gel sealing layer 88 is coated is accommodated in the accommodating groove 84, so that the silica gel is prevented from entering the dehumidification section 3; the sponge section 72 can also be easily removed to allow for replacement of the sponge section 72.

The dehumidifying section 3 can be taken down by rotating the connecting sleeve 51, so that the connecting sleeve 51 moves in the direction far away from the dehumidifying section 3 while rotating, and is gradually separated from the dehumidifying section 3, thereby taking down the dehumidifying section 3, and the taking-down process is very convenient; when the dehumidification section 3 is installed, the connection sleeve 51 can be rotated reversely, so that the connection sleeve 51 is close to the dehumidification section 3 and sleeved outside the dehumidification section 3, the connection sleeve 51 is continuously rotated, the second sealing ring 513 is abutted to the end part of the dehumidification section 3, and sealing is better performed.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a filtering absorber, includes casing (1), sets up in air inlet (11) and gas outlet (16) at casing (1) both ends, sets up in casing (1) and along air inlet (11) to air outlet (16) direction distribution's air inlet diffuser (12), secondary filter (13), strain poison unit (14) and air-out diffuser (15), its characterized in that: an air inlet pipeline (2) is arranged at the air inlet (11), a first hygrometer (64), a controller and a dehumidifying device (7) are sequentially arranged on the air inlet pipeline (2), a bypass pipe (4) is arranged on the air inlet pipeline (2), one end of the bypass pipe (4) is connected between the first hygrometer (64) and the dehumidifying device (7) to form a bypass inlet (41), the other end of the bypass pipe is connected between the dehumidifying device (7) and the air inlet (11) to form a bypass outlet (42), a first valve (61) and a second valve (62) are arranged on the air inlet pipeline (2), a third valve (63) is arranged on the bypass pipe (4), the first valve (61) is positioned between the bypass inlet (41) and the dehumidifying device (7), the second valve (62) is located between the bypass outlet (42) and the dehumidifying device (7); the first hygrometer (64) is used for detecting the relative humidity of the air in the air inlet pipeline (2); the controller is simultaneously electrically connected with the first hygrometer (64), the first valve (61), the second valve (62) and the third valve (63), and is used for receiving an electric signal detected by the first hygrometer (64), opening the first valve (61) and the second valve (62) and closing the third valve (63) when the relative humidity of air is greater than or equal to a set value; and when the relative humidity of the air is smaller than the set value, the first valve (61) and the second valve (62) are closed, and the third valve (63) is opened.

2. A filter absorber according to claim 1, wherein: the dehumidification device (7) comprises a first mesh plate (71), a sponge section (72), a second mesh plate (73) and a first driving piece (74) which is used for driving the first mesh plate (71) and the second mesh plate (73) to be close to or far away from each other, wherein the first mesh plate (71), the sponge section (72) and the second mesh plate (73) are sequentially arranged between the first valve (61) and the second valve (62), the bottom wall of the air inlet pipeline (2) is connected with a drain pipeline (31), and the drain pipeline (31) is provided with a drain valve (32).

3. A filter absorber according to claim 2, wherein: the first driving part (74) comprises a driving motor (741), a rack (742) and a gear (743), the gear (743) is rotatably mounted on the air inlet pipeline (2), the driving motor (741) is mounted on the air inlet pipeline (2) and an output shaft of the driving motor is coaxially connected with the gear (743), the rack (742) is arranged on the first mesh plate (71) and arranged along the length direction of the air inlet pipeline (2), and the rack (742) is meshed with the gear (743).

4. A filter absorber according to claim 2, wherein: be provided with auxiliary drying device (9) on admission line (2), auxiliary drying device (9) include first connecting pipe (91), second connecting pipe (92), fourth valve (93) and fan (94), fourth valve (93) set up on admission line (2) and are located bypass export (42) one side of dorsad second valve (62), first connecting pipe (91) one end is connected the other end with fan (94) air outlet and is connected with admission line (2), and is located between first valve (61) and first mesh board (71) with admission line (2) junction, second connecting pipe (92) one end and fan (94) air intake connection, the other end is connected with admission line (2), and is located between bypass export (42) and fourth valve (93) with admission line (2) junction.

5. A filter-absorber according to claim 4, wherein: an air outlet of the fan (94) is connected with a third connecting pipe (95) used for sucking outside air, and a fifth valve (96) is arranged on the third connecting pipe (95).

6. A filter absorber according to claim 1, wherein: be provided with dehumidification section (3) on admission line (2), dehumidification device (7) set up in dehumidification section (3), dehumidification section (3) and admission line (2) can dismantle through connecting piece (5) and be connected.

7. A filter-absorber according to claim 6, wherein: the connecting piece (5) comprises a connecting sleeve (51), a first connecting thread (52) and a second connecting thread (53) which have the same screwing direction and thread pitch, the first connecting thread (52) is arranged on the outer wall of the air inlet pipeline (2), the second connecting thread (53) is arranged on the outer wall of the dehumidification section (3), two ends of the connecting sleeve (51) are respectively sleeved on the outer walls of the air inlet pipeline (2) and the dehumidifying section (3) and are in threaded connection with the first threaded section (511) and the second threaded section (511), a first sealing ring (512) is arranged between the part of the air inlet pipeline (2) extending into the connecting sleeve (51) and the connecting sleeve (51), a second sealing ring (513) is arranged on the inner wall of the connecting sleeve (51) close to the dehumidifying section (3), the end part of the dehumidification section (3) facing the air inlet pipeline (2) is abutted against the end face of the second sealing ring (513).

8. A filter-absorber according to claim 6, wherein: remove wet section (3) outer wall and seted up and change mouth (81), change and to dismantle on mouthful (81) and be provided with apron (82), the length of changing mouthful (81) is greater than sponge section (72) length.

9. A filter absorber according to claim 8, wherein: go wet section (3) outer wall and be close to change mouth (81) department and be provided with bulge loop (83), storage tank (84) have been seted up on bulge loop (83) surface, and fixed screw (86) are located between storage tank (84) and change mouth (81), apron (82) are including inlaying the portion of establishing of inlaying of changing mouth (81) and set up in inlaying connection piece (85) of establishing the portion along the both ends of going wet section (3) length direction, and connection piece (85) surface and bulge loop (83) surface laminating are worn to be equipped with locking bolt (87) on connection piece (85), the bottom and fixed screw (86) threaded connection of locking bolt (87), be equipped with silica gel sealing layer (88) between connection piece (85) and bulge loop (83).

10. A filter absorber according to claim 1, wherein: and a second hygrometer (65) is arranged between the second valve (62) and the bypass outlet (42), and the second hygrometer (65) is electrically connected with the controller.