阅读说明：本技术 一种烘干机用废气排出装置 (Exhaust gas discharging device for drying machine ) 是由 王飞飞 张书文 张利 于 2021-05-20 设计创作，主要内容包括：本发明提供一种烘干机用废气排出装置。所述烘干机用废气排出装置包括安装箱、废气回收机构、排气机构、高温杀菌机构、过滤机构、磁铁和锁止万向轮。本发明通过设置废气回收机构,对烘干机排放的废气进行杀菌、过滤和干燥后流下的热气重新输送至烘干机内部,形成一个循环,避免外部空气中的杂质进入烘干机内部,对进行烘干的货物造成损坏,保护了货物的安全性,同时对废气进行杀菌过滤干燥后重新利用,节约能源,降低了成本,同时还避免存在有害物质的废气排放至空气中而污染空气,循环的热气会加速烘干机内部空气的流动,有利于货物的烘干,提高了工作效率。(The invention provides a waste gas exhaust device for a dryer. The waste gas discharge device for the dryer comprises an installation box, a waste gas recovery mechanism, an exhaust mechanism, a high-temperature sterilization mechanism, a filtering mechanism, a magnet and a locking universal wheel. According to the invention, the waste gas recovery mechanism is arranged, the hot gas flowing down after sterilizing, filtering and drying the waste gas discharged by the dryer is conveyed to the inside of the dryer again to form a circulation, so that impurities in the external air are prevented from entering the inside of the dryer to damage the dried goods, the safety of the goods is protected, the waste gas is reused after sterilizing, filtering and drying, the energy is saved, the cost is reduced, meanwhile, the waste gas with harmful substances is prevented from being discharged into the air to pollute the air, the circulating hot gas can accelerate the flow of the air in the dryer, the drying of the goods is facilitated, and the working efficiency is improved.)

1. An exhaust gas discharge device for a dryer, comprising:

an installation case (1);

the waste gas recovery mechanism (2) is used for recovering and reusing waste gas generated by the dryer, and the waste gas recovery mechanism (2) is arranged on the installation box (1);

the exhaust mechanism (3) is used for exhausting the waste gas, and the exhaust mechanism (3) is arranged in the installation box (1);

the high-temperature sterilization mechanism (4) is used for performing high-temperature sterilization on the waste gas entering the installation box (1) and is arranged in the installation box (1);

the filtering mechanism (5) is used for filtering and drying the recovered waste gas, and the filtering mechanism (5) is arranged in the installation box (1);

the magnet (6) is used for opening or closing the filter mechanism (5) after being taken out, and the magnet (6) which is convenient for cleaning and replacing the internal parts of the filter mechanism (5) is arranged in the filter mechanism (5);

the locking universal wheel (7) is used for conveniently moving and transporting the installation box (1) or braking the installation box (1), and the locking universal wheel (7) is installed on the installation box (1).

2. The exhaust gas discharging device for the dryer according to claim 1, wherein the exhaust gas recovery mechanism (2) comprises a recovery chamber (21), a filter chamber (22), a fan (23), an air suction pipe (24), an air outlet pipe (25), an air inlet pipe (26) and a communicating pipe (27), the recovery chamber (21) and the filter chamber (22) are transversely arranged and arranged inside the installation box (1), the recovery chamber (21) and the filter chamber (22) are communicated through the communicating pipe (27), the fan (23) is fixedly installed at the upper end of the installation box (1), one end of the inverted U-shaped air suction pipe (24) is communicated with an air suction port of the fan (23), two ends of the air outlet pipe (25) are respectively communicated with an air outlet of the fan (23) and the inside of the recovery chamber (21), the air inlet pipe (26) is fixedly installed on one side wall of the installation box (1) and is communicated with the filter chamber (22), the air suction pipe (24), the air outlet pipe (25) and the air inlet pipe (26) are wrapped by insulation sleeves.

3. The exhaust gas discharging device for the dryer according to claim 2, wherein the exhaust mechanism (3) comprises an exhaust pipe (31) and an electric control valve (32), the exhaust pipe (31) is fixedly installed on one side wall of the installation box (1) and is communicated with the interior of the recovery chamber (21), and the electric control valve (32) is installed on both the exhaust pipe (31) and the communication pipe (27).

4. The exhaust gas discharging device for the dryer according to claim 2, wherein the high temperature sterilization mechanism (4) comprises a water receiving tank (41), a water discharging hole (42) and an electric heating net (43), the water receiving tank (41) is opened on the lower inner wall of the recovery chamber (21) and is far away from the filter chamber (22), one end of the air outlet pipe (25) far away from the fan (23) is positioned right above the water receiving tank (41), the water discharging hole (42) is opened at the bottom of the installation box (1) and is communicated with the water receiving tank (41), a sealing piston is installed in the water discharging hole (42), and the electric heating net (43) is fixedly installed in the recovery chamber (21) and is positioned above the water receiving tank (41).

5. The exhaust gas discharging device for the dryer according to claim 2, wherein the filtering mechanism (5) comprises a socket (51), a filtering box (52), a handle (53), a mounting cavity (54), a sealing plate (55), a baffle net (56), absorbent cotton (57), activated carbon (58) and air holes (59), the socket (51) is arranged on the upper side wall of the mounting box (1) and communicated with the inside of the filtering cavity (22), the filtering box (52) is inserted into the socket (51), the handle (53) is fixedly arranged at the upper end of the filtering box (52), the mounting cavity (54) is arranged in the filtering box (52) with the opening facing one side, the sealing plate (55) is rotatably connected to the opening of the mounting cavity (54), and two sets of air holes (59) are respectively arranged on the two side walls of the filtering box (52) and communicated with the inside of the mounting cavity (54), two keep off net (56) and all insert and locate installation cavity (54) inside and be close to two sets of bleeder vents (59) respectively and set up, two cotton (57) that absorb water all insert and locate installation cavity (54) inside and be close to two respectively and keep off net (56) and set up, activated carbon (58) are filled in installation cavity (54) and are located between two cotton (57) that absorb water.

6. The exhaust gas discharging device for dryer according to claim 5, wherein two magnets (6) are fixedly installed on two side walls of the sealing plate (55) and the filtering box (52) adjacent to each other, respectively.

7. The exhaust gas discharging device for the dryer according to claim 1, wherein the number of the locking universal wheels (7) is two, and the two locking universal wheels (7) are symmetrically and fixedly installed on the lower side wall of the installation box (1).

8. The exhaust gas discharging device for dryer according to claim 5, wherein the handle (53) is covered with heat insulating cotton, and the filtering box (52) and the sealing plate (55) are made of heat insulating board.

9. The exhaust gas discharging device for dryer according to claim 2, wherein said communicating pipe (27) is provided near the center of the filter chamber (22) and the recovery chamber (21).

Technical Field

The invention relates to the field of dryers, in particular to a waste gas discharge device for a dryer.

Background

Dryers can be divided into industrial dryers, also called drying plants or dryers, and domestic dryers, which are one type of washing machine, are generally used to remove moisture from garments and other textiles after dehydration in a water wash. The shelf life of some goods is not prolonged, the goods are usually dried by a dryer, the moisture in the goods is reduced, the goods can be stored for a longer time, and when the goods are dried by a common dryer, the moisture remained in the goods is evaporated at high temperature and is discharged from an exhaust pipe and directly discharged into the air.

Some goods themselves have certain harmful substance, and when drying it, carry the waste gas of moisture and directly discharge to the air in, can cause the pollution to the environment, contain more heat in the waste gas of emission simultaneously, directly discharge than extravagant.

Therefore, there is a need for a new exhaust gas exhausting apparatus for a dryer to solve the above-mentioned technical problems.

Disclosure of Invention

In order to solve the technical problem, the invention provides a waste gas discharge device for a dryer.

The invention provides a waste gas discharge device for a dryer, comprising: installing a box; the waste gas recovery mechanism is used for recovering and reusing waste gas generated by the dryer and is arranged on the installation box; the exhaust mechanism is used for exhausting waste gas and is arranged in the installation box; the high-temperature sterilization mechanism is used for performing high-temperature sterilization on the waste gas entering the installation box and is arranged in the installation box; the filtering mechanism is used for filtering and drying the recovered waste gas and is arranged in the installation box; the magnet is used for opening or closing the filter mechanism after the filter mechanism is taken out, so that the magnet which is convenient for cleaning and replacing the internal parts of the filter mechanism is arranged in the filter mechanism; and the locking universal wheel is used for conveniently moving and transporting the installation box or braking the installation box and is arranged on the installation box.

Preferably, the waste gas recovery mechanism is including retrieving chamber, filter chamber, fan, breathing pipe, outlet duct, intake pipe and communicating pipe, retrieve chamber and filter chamber transverse arrangement and offer inside the install bin, and retrieve chamber and filter chamber and pass through communicating pipe intercommunication, fan fixed mounting is in the upper end of install bin, and is the breathing pipe one end of the type of falling U and the induction port intercommunication of fan, the both ends of outlet duct communicate with the gas outlet of fan and retrieve the inside intercommunication of cavity respectively, intake pipe fixed mounting on one side lateral wall of install bin and with the filter chamber intercommunication, all wrap up the insulation cover in breathing pipe, outlet duct and the intake pipe.

Preferably, exhaust mechanism includes blast pipe and electric control valve, blast pipe fixed mounting on one side lateral wall of install bin and with retrieve intracavity portion intercommunication, and all install electric control valve on blast pipe and the communicating pipe.

Preferably, the high-temperature sterilization mechanism comprises a water receiving tank, a drain hole and an electric heating net, the water receiving tank is arranged on the inner wall of the lower side of the recovery cavity and is far away from the filter cavity, one end, far away from the fan, of the air outlet pipe is located right above the water receiving tank, the drain hole is arranged at the bottom of the installation box and is communicated with the water receiving tank, a sealing piston is arranged in the drain hole, and the electric heating net is fixedly installed in the recovery cavity and is located above the water receiving tank.

Preferably, filtering mechanism includes socket, rose box, handle, installation cavity, closing plate, keeps off the net, the cotton that absorbs water, active carbon and bleeder vent, the socket is seted up on the upside lateral wall of install bin and with the inside intercommunication of rose box, and the rose box inserts and locates in the socket, handle fixed mounting is in the upper end of rose box, the installation cavity is seted up in the rose box and the opening sets up towards one side, and the closing plate rotates to be connected in the opening part of installation cavity, two sets of bleeder vents open respectively on the both sides lateral wall of rose box and with the inside intercommunication of installation cavity, two keep off the net and all insert and locate the installation cavity inside and be close to two sets of bleeder vents setting respectively, two the cotton that absorbs water all inserts and locate the installation cavity inside and be close to two respectively and keep off the net setting, the active carbon is filled in the installation cavity and is located between two cotton that absorb water.

Preferably, the two magnets are respectively and fixedly arranged on two side walls of the sealing plate and the filtering box, which are close to each other.

Preferably, the number of locking universal wheels is two sets of, and two sets of locking universal wheels symmetry fixed mounting are on the downside lateral wall of install bin.

Preferably, the handle is sleeved with heat insulation cotton, and the filter box and the sealing plate are both made of heat insulation plates.

Preferably, the communicating pipe is arranged close to the central parts of the filter cavity and the recovery cavity.

Compared with the prior art, the waste gas exhaust device for the dryer provided by the invention has the following beneficial effects:

1. according to the invention, the waste gas recovery mechanism is arranged, hot gas flowing down after sterilizing, filtering and drying waste gas discharged by the dryer is conveyed to the inside of the dryer again to form a circulation, so that impurities in external air are prevented from entering the inside of the dryer to damage dried goods, the safety of the goods is protected, the waste gas is reused after being sterilized, filtered and dried, energy is saved, the cost is reduced, meanwhile, the waste gas with harmful substances is prevented from being discharged into the air to pollute the air, the circulating hot gas can accelerate the flow of the air in the dryer, the drying of the goods is facilitated, and the working efficiency is improved;

2. according to the invention, by arranging the exhaust mechanism, when the filter mechanism needs to be maintained, the communicating pipe can be controlled to be closed through the electric control valve, the exhaust pipe is opened, and exhaust is carried out through the exhaust pipe, so that the situation that waste gas containing water vapor enters the dryer after being filtered and dried by the filter mechanism is avoided, and the filter mechanism is convenient to maintain and replace without stopping;

3. the filtering mechanism filters impurities and dries the waste gas, the filtering mechanism is simple and quick to replace, the working efficiency is improved, the internal parts of the filtering mechanism are convenient to disassemble, and the internal parts of the filtering box are convenient to clean and replace;

4. according to the invention, two groups of locking universal wheels are arranged at the bottom of the mounting box, so that the device can be conveniently moved, transported and braked.

Drawings

Fig. 1 is a schematic structural view of an exhaust gas exhausting apparatus for a dryer according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of the mounting box shown in FIG. 1;

FIG. 3 is a schematic view of the internal structure of the mounting box shown in FIG. 1;

FIG. 4 is a schematic view of the installation position of the electric heating net shown in FIG. 1;

FIG. 5 is a schematic view of the exhaust pipe shown in FIG. 1;

FIG. 6 is a schematic view of the closed upper seal plate of the filtration tank of FIG. 1;

fig. 7 is a schematic structural view of the upper sealing plate of the filter box shown in fig. 1 when opened.

Reference numbers in the figures: 1. installing a box; 2. a waste gas recovery mechanism; 21. a recovery chamber; 22. a filter chamber; 23. a fan; 24. an air intake duct; 25. an air outlet pipe; 26. an air inlet pipe; 27. a communicating pipe; 3. an exhaust mechanism; 31. an exhaust pipe; 32. an electrically controlled valve; 4. a high-temperature sterilization mechanism; 41. a water receiving tank; 42. a drain hole; 43. an electric heating net; 5. a filtering mechanism; 51. a socket; 52. a filter box; 53. a handle; 54. a mounting cavity; 55. a sealing plate; 56. blocking the net; 57. absorbent cotton; 58. activated carbon; 59. air holes are formed; 6. a magnet; 7. and locking the universal wheels.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1-7, fig. 1 is a schematic structural diagram of an exhaust gas exhausting apparatus for a dryer according to a preferred embodiment of the present invention; FIG. 2 is a schematic structural view of the mounting box shown in FIG. 1; FIG. 3 is a schematic view of the internal structure of the mounting box shown in FIG. 1; FIG. 4 is a schematic view of the installation position of the electric heating net shown in FIG. 1; FIG. 5 is a schematic view of the exhaust pipe shown in FIG. 1; FIG. 6 is a schematic view of the closed upper seal plate of the filtration tank of FIG. 1; fig. 7 is a schematic structural view of the upper sealing plate of the filter box shown in fig. 1 when opened. The method comprises the following steps: the device comprises a mounting box 1, a waste gas recovery mechanism 2, an exhaust mechanism 3, a high-temperature sterilization mechanism 4, a filtering mechanism 5, a magnet 6 and a locking universal wheel 7.

In the specific implementation process, as shown in fig. 1, 2 and 3, the waste gas recovery mechanism 2 for recovering and reusing waste gas generated by the dryer is installed on the installation box 1, the waste gas recovery mechanism 2 includes a recovery chamber 21, a filter chamber 22, a fan 23, an air suction pipe 24, an air outlet pipe 25, an air inlet pipe 26 and a communicating pipe 27, the recovery chamber 21 and the filter chamber 22 are transversely arranged and arranged inside the installation box 1, the recycling cavity 21 is communicated with the filtering cavity 22 through a communicating pipe 27, the fan 23 is fixedly arranged at the upper end of the installation box 1, one end of an inverted U-shaped air suction pipe 24 is communicated with an air suction port of the fan 23, two ends of an air outlet pipe 25 are respectively communicated with an air outlet of the fan 23 and the interior of the recovery cavity 21, an air inlet pipe 26 is fixedly arranged on the side wall of one side of the installation box 1 and is communicated with the filtering cavity 22, and the air suction pipe 24, the air outlet pipe 25 and the air inlet pipe 26 are all wrapped with heat insulation sleeves;

it should be noted that: when the device is used, one end of the inverted U-shaped air suction pipe 24, which is far away from the fan 23, is communicated with an air outlet of a dryer, one end of the air inlet pipe 26 is communicated with the dryer, when the device is used, the fan 23 runs, waste gas discharged by the dryer is collected through the air suction pipe 24, the waste gas is conveyed to the interior of the recovery cavity 21 through the air outlet pipe 25, the waste gas is sterilized through the high-temperature sterilization mechanism 4, the waste gas subjected to high-temperature sterilization enters the interior of the filter cavity 22 through the communicating pipe 27, the sterilized waste gas is filtered and dried through the filter mechanism 5, hot gas subjected to sterilization, filtration and drying is conveyed to the interior of the dryer through the air inlet pipe 26 to form a circulation, impurities in external air are prevented from entering the interior of the dryer, the dried goods are damaged, the safety of the goods is protected, and the waste gas is reused after being sterilized, filtered and dried, the energy is saved, the cost is reduced, the pollution to the air caused by the emission of the waste gas with harmful substances to the air is avoided, the circulation hot gas can accelerate the flow of the air in the dryer, the drying of goods is facilitated, and the working efficiency is improved.

Referring to fig. 3 and 5, the exhaust mechanism 3 for discharging the exhaust gas is installed inside the installation box 1, the exhaust mechanism 3 includes an exhaust pipe 31 and an electronic control valve 32, the exhaust pipe 31 is fixedly installed on a side wall of the installation box 1 and is communicated with the inside of the recovery chamber 21, and the electronic control valve 32 is installed on both the exhaust pipe 31 and the communication pipe 27;

it should be noted that: when the filtering mechanism 5 needs to be maintained, the electric control valve 32 can control the communicating pipe 27 to be closed, the exhaust pipe 31 is opened, and the exhaust pipe 31 is used for exhausting air, so that the situation that waste gas containing water vapor enters the inside of the dryer after being filtered and dried by the filtering mechanism 5 is avoided, and the filtering mechanism 5 is convenient to maintain and replace without stopping;

wherein, when changing filter mechanism 5, need change in advance and be equipped with another filter mechanism 5, realize filter mechanism 5's quick replacement, the time of filter mechanism 5 is changed to the minimize to inside reducing outside air entering drying-machine, need install the dirt screen among the intake pipe 26, it is inside to avoid the dust to get into the drying-machine through intake pipe 26 when changing filter mechanism 5.

Referring to fig. 3 and 4, a high-temperature sterilization mechanism 4 for performing high-temperature sterilization on waste gas entering the installation box 1 is installed inside the installation box 1, the high-temperature sterilization mechanism 4 includes a water receiving tank 41, a water discharge hole 42 and an electric heating net 43, the water receiving tank 41 is opened on the inner wall of the lower side of the recovery cavity 21 and is far away from the filter cavity 22, one end of the air outlet pipe 25 far away from the fan 23 is located right above the water receiving tank 41, the water discharge hole 42 is opened at the bottom of the installation box 1 and is communicated with the water receiving tank 41, a sealing piston is installed in the water discharge hole 42, and the electric heating net 43 is fixedly installed in the recovery cavity 21 and is located above the water receiving tank 41;

it should be noted that: get into from outlet duct 25 and retrieve the inside waste gas of chamber 21 and carry moisture, when steam passes through the inner wall of breathing pipe 24 and outlet duct 25, can produce the water droplet gradually, the water droplet can drip to the water receiving tank 41 of retrieving the inside division of chamber 21 along the inner wall of outlet duct 25 in, collect water, the waste gas that carries partly moisture carries out filtration drying in getting into filter chamber 22 after carrying out pasteurization through electric heat net 43 again, form aseptic non-impurity and dry hot-air and carry out the drying operation to the goods in getting into the drying-machine again, the ponding of getting is discharged in accessible wash port 42 butt joint basin 41 after the one end time.

Referring to fig. 1, 2, 6 and 7, a filtering mechanism 5 for filtering and drying the recovered exhaust gas is installed inside an installation box 1, the filtering mechanism 5 includes a socket 51, a filtering box 52, a handle 53, an installation cavity 54, a sealing plate 55, a blocking net 56, absorbent cotton 57, activated carbon 58 and air holes 59, the socket 51 is opened on the upper side wall of the installation box 1 and is communicated with the inside of the filtering cavity 22, the filtering box 52 is inserted into the socket 51, the handle 53 is fixedly installed at the upper end of the filtering box 52, the installation cavity 54 is opened in the filtering box 52 and is opened toward one side, the sealing plate 55 is rotatably connected to the opening of the installation cavity 54, two sets of air holes 59 are respectively opened on the side walls at both sides of the filtering box 52 and are communicated with the inside of the installation cavity 54, two blocking nets 56 are respectively inserted into the inside of the installation cavity 54 and are respectively arranged near the two sets of air holes 59, two absorbent cotton 57 are inserted into the inside of the installation cavity 54 and are respectively arranged near the two blocking nets 56, the activated carbon 58 is filled in the mounting cavity 54 and is positioned between the two absorbent cottons 57;

it should be noted that: the waste gas after high temperature sterilization enters the filter cavity 22 through the communicating pipe 27, the waste gas enters the installation cavity 54 through the vent holes 59 on the filter box 52, impurities contained in the waste gas are filtered through the blocking net 56, the absorbent cotton 57 and the activated carbon 58, the absorbent cotton 57 absorbs moisture contained in the waste gas, the activated carbon 58 absorbs a part of moisture and harmful substances, the waste gas is filtered and dried, hot gas after filtering and drying enters the dryer through the air inlet pipe 26 to form a circulation, the blocking net 56, the absorbent cotton 57 and the activated carbon 58 in the filter mechanism 5 need to be replaced after being used for a period, when the filter mechanism 5 is replaced, the communicating pipe 27 is controlled to be closed through the electric control valve 32, the exhaust pipe 31 is opened, the exhaust is performed through the exhaust pipe 31, the filter box 52 is taken out of the socket 51 through the handle 53 and is inserted into another filter mechanism 5 prepared in advance, when the air inlet pipe is inserted into the socket 51, the communicating pipe 27 can be controlled to be opened through the electric control valve 32, and the exhaust pipe 31 is closed, so that the operation is simple and rapid;

when the replaced filter box 52 needs to be cleaned, the sealing plate 55 is opened, the baffle net 56, the absorbent cotton 57 and the activated carbon 58 are taken out from the installation cavity 54, the filter box 52 and the baffle net 56 are cleaned, the absorbent cotton 57 and the activated carbon 58 are replaced, and the replaced filter box 52 and the baffle net 56 need to be dried and then reused.

Referring to fig. 7, a magnet 6 for opening or closing the filter mechanism 5 after removing the filter mechanism 5 to facilitate cleaning and replacement of the internal components thereof is installed in the filter mechanism 5, and the two magnets 6 are fixedly installed on the two side walls of the sealing plate 55 and the filter box 52 adjacent to each other, respectively;

it should be noted that: the sealing plate 55 is adsorbed by the two magnets 6 with opposite magnetism to seal the mounting cavity 54, so that the sealing plate 55 can be opened and closed simply and quickly, the internal parts of the filter box 52 can be cleaned and replaced conveniently, when the filter box 52 is inserted into the socket 51, the sealing plate 55 is extruded through the inner wall of the socket 51 to limit the opening, and the opening of the mounting cavity 54 cannot be opened.

Referring to fig. 1, locking universal wheels 7 for conveniently moving and transporting the installation box 1 or braking the installation box 1 are installed on the installation box 1, the number of the locking universal wheels 7 is two, and the two groups of locking universal wheels 7 are symmetrically and fixedly installed on the lower side wall of the installation box 1;

it should be noted that: two groups of locking universal wheels 7 are arranged at the bottom of the mounting box 1, so that the device can be conveniently moved and transported and braked;

wherein, the handle 53 is sleeved with heat insulation cotton, and the filter box 52 and the sealing plate 55 are both made of heat insulation boards;

it should be noted that: the handle 53 is sleeved with heat insulation cotton, and the filter box 52 and the sealing plate 55 made of heat insulation plates have non-thermal conductivity, so that the filter box 52 is prevented from being scalded by high temperature when being replaced.

Wherein, the communicating pipe 27 is arranged near the central parts of the filter cavity 22 and the recovery cavity 21;

it should be noted that: that is, the communication position between the recovery chamber 21 and the filter chamber 22 is high, so that the worker can be prevented from forgetting to drain the water into the water receiving tank 41 for a long time and making the water enter the filter chamber 22.

The working principle provided by the invention is as follows: when the device is used, one end of the inverted U-shaped air suction pipe 24, which is far away from the fan 23, is communicated with an air outlet of a dryer, one end of the air inlet pipe 26 is communicated with the dryer, when the device is used, the fan 23 runs, waste gas discharged by the dryer is collected through the air suction pipe 24, the waste gas is conveyed to the interior of the recovery cavity 21 through the air outlet pipe 25, the waste gas entering the interior of the recovery cavity 21 from the air outlet pipe 25 carries moisture, when the hot gas passes through the inner walls of the air suction pipe 24 and the air outlet pipe 25, water drops are gradually generated, the water drops drop into the water receiving groove 41 formed in the interior of the recovery cavity 21 along the inner wall of the air outlet pipe 25, water is collected, the waste gas carrying partial moisture enters the filter cavity 22 after being subjected to high-temperature sterilization through the electric heating net 43, the waste gas enters the interior of the installation cavity 54 through the air holes 59 in the filter box 52, impurities contained in the waste gas are filtered through the baffle net 56, the absorbent cotton 57 and the active carbon 58, the water absorption cotton 57 absorbs moisture contained in the waste gas, the active carbon 58 absorbs a part of moisture and harmful substances, the waste gas is filtered and dried, the sterilized and filtered and dried hot gas enters the dryer through the air inlet pipe 26 to form a circulation, impurities in the outside air are prevented from entering the dryer, the dried goods are prevented from being damaged, the safety of the goods is protected, the waste gas is reused after being sterilized, filtered and dried, energy is saved, cost is reduced, the situation that the waste gas with the harmful substances is discharged into the air to pollute the air is avoided, the circulated hot gas can accelerate the flow of the air in the dryer, the drying of the goods is facilitated, and the working efficiency is improved;

the baffle net 56, the absorbent cotton 57 and the activated carbon 58 in the filter mechanism 5 need to be replaced after a period of use, when the filter mechanism 5 is replaced, the connection pipe 27 can be controlled to be closed through the electric control valve 32, the exhaust pipe 31 is opened, the air is exhausted through the exhaust pipe 31, the filter box 52 is taken out of the socket 51 by the handle 53, inserted into another filter mechanism 5 prepared in advance, inserted into the socket 51, the communicating pipe 27 can be controlled to be opened and the exhaust pipe 31 can be closed through the electric control valve 32, the operation is simple and quick, when the replaced filter box 52 needs to be cleaned, the sealing plate 55 is opened, the baffle net 56, the absorbent cotton 57 and the activated carbon 58 are taken out from the inside of the installation cavity 54, the filter box 52 and the baffle net 56 are cleaned, the water absorption cotton 57 and the activated carbon 58 are replaced, and the replaced filter box 52 and the baffle net 56 need to be dried and reused.

The circuits and controls involved in the present invention are prior art and will not be described in detail herein.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.