CN215742435U

CN215742435U - High-voltage pulse dust collector for production of dehydrated vegetables

Info

Publication number: CN215742435U
Application number: CN202121766926.3U
Authority: CN
Inventors: 孙亮; 孙月
Original assignee: Anhui Furuiqi Food Flavor Co ltd
Current assignee: Anhui Furuiqi Food Flavor Co ltd
Priority date: 2021-07-31
Filing date: 2021-07-31
Publication date: 2022-02-08
Anticipated expiration: 2031-07-31

Abstract

The utility model discloses a high-voltage pulse dust collector for production of dehydrated vegetables, which comprises a mounting shell, a slow flow mechanism, a filtering mechanism and a pulse mechanism, wherein the mounting shell is provided with a water inlet and a water outlet; installing a shell: the middle part of the left side surface of the ladder platform cover at the lower end of the ladder platform cover is provided with an air inlet which is communicated with external dust-containing gas discharge equipment; the flow slowing mechanism: the lower end of the inner part of the mounting shell is provided with a mounting hole; a filtering mechanism: the mounting hole is arranged in a mounting hole formed in the middle of a top sealing plate of the mounting shell; a pulse mechanism: the filter mechanism is arranged at the upper end of the mounting shell and the upper end of the filter mechanism respectively; wherein: the high-voltage pulse dust collector for dehydrated vegetable production can increase the contraction and expansion amplitude of the filter bag, and ensures that dust on the surface of the filter bag can be effectively removed when pulse dust removal is carried out.

Description

High-voltage pulse dust collector for production of dehydrated vegetables

Technical Field

The utility model relates to the technical field of dust removal equipment, in particular to a high-voltage pulse dust remover for production of dehydrated vegetables.

Background

A dust-removing equipment, it is a equipment for separating dust from dust-containing gas, also called dust remover or dust-removing equipment, the high-pressure pulse dust remover is one of the commonly used dust-removing equipments, when the dust-containing gas is fed into the dust remover from air inlet, firstly, it is contacted with baffle plate in the middle of air inlet and air outlet, the coarse-grain dust in the gas can be fallen into lower component under the action of baffle plate to obtain the effect of pre-collecting dust, the air flow can be upwards passed through the filter bag dust whose interior is equipped with metal skeleton and collected on the external surface of the filter bag, the purified gas can be discharged after being fed into filter bag chamber, in the course of cleaning dust-containing gas by means of filter bag, the dust deposited on the filter bag is more and more, the resistance of filter bag is increased, so that the air quantity for treatment can be gradually reduced, for normal work, the filter bag must be cleaned at regular intervals, when cleaning dust, the dust can be cleaned, the pulse controller can be used for sequentially triggering each control valve to open, compressed air is sprayed into the filter bag through the injection pipe, the filter bag rapidly expands instantly, dust deposited on the surface of the filter bag falls off, the traditional pulse dust collector only uses the baffle plate to block large-particle dust in the air, the effect is not ideal enough, meanwhile, the framework of the traditional pulse dust collector for supporting the filter bag is fixed, the expansion and contraction amplitude of the filter bag is limited, and the dust on the surface of the filter bag can not be effectively removed when pulse dust removal is carried out, so that the high-pressure pulse dust collector for dehydrated vegetable production is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a high-voltage pulse dust collector for dehydrated vegetable production, which can improve the dust collection efficiency and effectively solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-voltage pulse dust collector for production of dehydrated vegetables comprises a mounting shell, a slow flow mechanism, a filtering mechanism and a pulse mechanism;

installing a shell: the middle part of the left side surface of the ladder platform cover at the lower end of the ladder platform cover is provided with an air inlet which is communicated with external dust-containing gas discharge equipment;

the flow slowing mechanism: the lower end of the inner part of the mounting shell is provided with a mounting hole;

a filtering mechanism: the mounting hole is arranged in a mounting hole formed in the middle of a top sealing plate of the mounting shell;

a pulse mechanism: the filter mechanism is arranged at the upper end of the mounting shell and the upper end of the filter mechanism respectively;

wherein: still include the support frame, the support frame sets up in the lower extreme of installation shell, the square board upper surface middle part that the support frame below set up is equipped with the ash storage box, the upper end opening of ash storage box and the lower extreme opening fixed connection of installation shell, multiple unhurried current part is provided, can effectively block the large granule dust, the dust water conservancy diversion part is provided simultaneously, the dust that can prevent that the pulse from driving falls on the surface of unhurried current board, the efficiency of dust removal is improved, the skeleton part that can contract by oneself is provided, can increase the shrink and the expansion amplitude of filter bag, guarantee that the dust on filter bag surface can effectively clear away when carrying out the pulse deashing.

Furthermore, the front side lower extreme of support frame is equipped with the PLC controller, and external power source is connected to the input electricity of PLC controller, regulates and control the normal operating of each part.

Further, unhurried current mechanism includes square mouth, unhurried current board and swash plate, unhurried current board sets up in the inside lower extreme of installation shell, and the upper surface middle part of unhurried current board is evenly seted up to the square mouth, and the swash plate evenly sets up in the lower surface of unhurried current board, and the square mouth sets up with the swash plate interval, can effectively block the large granule dust.

Furthermore, the slow flow mechanism also comprises a guide plate. The guide plates are uniformly distributed on the upper surface of the flow buffering plate, so that dust removed by pulse can be prevented from falling on the surface of the flow buffering plate.

Furthermore, the filtering mechanism comprises a circular plate, a first fixing rod, a first compensating rod, a filter bag, a telescopic rod, a second compensating rod, a second fixing rod and a fixing ring, the circular plate is arranged in an installation opening formed in the middle of a top sealing plate of the installation shell, the first fixing rod is uniformly arranged on the outer side of the lower surface of the circular plate, the first compensating rod is hinged to the lower end of the first fixing rod through hinges respectively, the telescopic rod is hinged to the lower end of the first compensating rod through hinges respectively, the second compensating rod is hinged to the lower end of the telescopic rod through hinges respectively, the second fixing rod is hinged to the lower end of the second compensating rod through hinges respectively, the lower end of the second fixing rod is fixedly connected with the fixing ring, the rotation directions of the hinges point to the central axis of the circular plate, the filter bag is sleeved outside an annular framework formed by correspondingly combining the first fixing rod, the first compensating rod, the telescopic rod, the second compensating rod and the fixing ring, the upper end of the filter bag is fixedly connected with the lower surface of the circular plate, so that the contraction and expansion amplitude of the filter bag can be increased, and the dust on the surface of the filter bag can be effectively removed when pulse dust removal is carried out.

Further, pulse mechanism includes first air pump, first solenoid valve and outlet duct, the outlet duct sets up in the through-hole that the upper surface rear side of plectane was seted up, and first solenoid valve is established ties in the middle part of outlet duct, and first air pump sets up in the upper surface rear side of installation shell, and the induction port and the outlet duct of first air pump are connected, and the output of PLC controller is connected to the equal electricity of input of first air pump and first solenoid valve, improves the air flow rate through the filter bag, improves dust collection efficiency.

Further, pulse mechanism still includes intake pipe, second solenoid valve and second air pump, the intake pipe sets up in the through-hole that the upper surface front side of plectane was seted up, and the second solenoid valve is established ties in the middle part of intake pipe, and the second air pump sets up in the upper surface front side of installation shell, and the gas outlet and the intake-tube connection of second air pump, the equal electricity of input of second air pump and second solenoid valve connect the output of PLC controller, can realize the pulse clearance of filter bag.

Compared with the prior art, the utility model has the beneficial effects that: this a high-pressure pulse dust remover for dehydrated vegetable production has following benefit:

1. outside dirty gas emission equipment passes through the inside that the air inlet discharged dirty gas into the installation shell, the inside large granule dust that contains of gas is automatic whereabouts under the blockking of deflector and swash plate, fall into the inside of ash storage box through the opening of installation shell below afterwards, the filter bag outwards expands, drive the outside inflation of inside skeleton simultaneously, with the expansion range of this increase filter bag, make the outside adnexed dust of filter bag shake off at the expanded in-process of filter bag, the dust of whereabouts gets into the inside below of installation shell through the square mouth under the water conservancy diversion effect of deflector, it is inside to get into ash storage box through the opening of installation shell below at last, multiple unhurried current part is provided, can effectively block the large granule dust, the dust water conservancy diversion part is provided simultaneously, the dust that can prevent pulse to clear falls on the surface of unhurried current board, and the dust collection efficiency is improved.

2. The small particle dust and air enter the upper part of the inner part of the mounting shell through the square opening together, the first electromagnetic valve is opened and the second electromagnetic valve is closed through the regulation and control of the PLC controller, the first air pump starts to work and sucks air from the inner part of the filter bag, the air pressure in the filter bag is reduced, so that the filter bag is contracted, the contraction force of the filter bag can drive the telescopic rod to contract inwards under the action of the first compensation rod and the second compensation rod, thereby realizing that the first fixing rod, the first compensation rod, the telescopic rod, the second compensation rod, the framework formed by correspondingly combining the second fixing rod and the fixing ring contracts integrally, further increasing the contraction range of the filter bag, meanwhile, the air in the mounting shell enters the inner part of the filter bag from the outer part of the filter bag under the action of pressure and is discharged through the first air pump, the dust contained in the air is attached to the outer part of the air pump, and after working for a certain time, outside dirty gas discharging equipment stops gaseous emission, under the regulation and control of PLC controller, first air pump stop work, first solenoid valve is closed, the second solenoid valve is opened, the second air pump begins work, blow in inside the filter bag after the outside air compression, the inside pressure of filter bag increases in the twinkling of an eye, the filter bag outwards expands, drive the outside inflation of inside skeleton simultaneously, with the expansion amplitude of this increase filter bag, make the outside adnexed dust of filter bag shake off at the expanded in-process of filter bag, the skeleton member that can contract by oneself is provided, the shrink and the expansion amplitude of filter bag can be increased, guarantee that the dust on filter bag surface can effectively clear away when carrying out the pulse deashing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the mounting housing of the present invention;

fig. 3 is a schematic structural view of the filter mechanism of the present invention.

In the figure: the device comprises a mounting shell 1, an air inlet 2, a support frame 3, a PLC 4, an ash storage box 5, a flow slowing mechanism 6, a guide plate 61, a square opening 62, a flow slowing plate 63, a sloping plate 64, a filtering mechanism 7, a circular plate 71, a first fixing rod 72, a first compensating rod 73, a filter bag 74, a telescopic rod 75, a second compensating rod 76, a second fixing rod 77, a fixing ring 78, a pulse mechanism 8, a first air pump 81, a first electromagnetic valve 82, an air outlet 83, an air inlet 84, a second electromagnetic valve 85 and a second air pump 86.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present embodiment provides a technical solution: a high-voltage pulse dust collector for dehydrated vegetable production comprises a mounting shell 1, a slow flow mechanism 6, a filtering mechanism 7 and a pulse mechanism 8;

installing the shell 1: the installation shell 1 provides a filtering treatment place for dust-containing gas, the middle part of the left side surface of the terrace cover at the lower end of the installation shell is provided with a gas inlet 2, and the gas inlet 2 is communicated with external dust-containing gas discharge equipment;

the flow slowing mechanism 6: unhurried current mechanism 6 slows down air flow rate, blocks the large granule dust, sets up in the inside lower extreme of installation shell 1, and unhurried current mechanism 6 includes square mouth 62, unhurried current board 63 and swash plate 64, and unhurried current board 63 sets up in the inside lower extreme of installation shell 1, and the upper surface middle part of unhurried current board 63 is evenly seted up to square mouth 62, and swash plate 64 evenly sets up in the lower surface of unhurried current board 63, and square mouth 62 sets up with swash plate 64 interval, and unhurried current mechanism 6 still includes deflector 61. The guide plates 61 are uniformly distributed on the upper surfaces of the buffer plates 63, dust-containing gas is discharged into the mounting shell 1 through the air inlet 2 by external dust-containing gas discharge equipment, large-particle dust contained in the gas automatically falls under the blocking of the guide plates 61 and the inclined plates 64, then falls into the dust storage box 5 through an opening below the mounting shell 1, small-particle dust and air enter the upper part of the interior of the mounting shell 1 through the square openings 62, the falling dust enters the lower part of the interior of the mounting shell 1 through the square openings 62 under the flow guide effect of the guide plates 61, and finally enters the interior of the dust storage box 5 through an opening below the mounting shell 1;

the filtering mechanism 7: the filtering mechanism 7 can realize air filtering and is arranged in a mounting hole formed in the middle of a top sealing plate of the mounting shell 1, the filtering mechanism 7 comprises a circular plate 71, a first fixing rod 72, a first compensation rod 73, a filter bag 74, a telescopic rod 75, a second compensation rod 76, a second fixing rod 77 and a fixing ring 78, the circular plate 71 is arranged in the mounting hole formed in the middle of the top sealing plate of the mounting shell 1, the first fixing rod 72 is uniformly arranged outside the lower surface of the circular plate 71, the first compensation rod 73 is hinged to the lower end of the first fixing rod 72 through hinges respectively, the telescopic rod 75 is hinged to the lower end of the first compensation rod 73 through hinges respectively, the second compensation rod 76 is hinged to the lower end of the telescopic rod 75 through hinges respectively, the second fixing rod 77 is hinged to the lower end of the second compensation rod 76 through hinges respectively, the lower end of the second fixing rod 77 is fixedly connected with the fixing ring 78, and the rotation direction of the hinges points to the central axis of the circular plate 71, the filter bag 74 is sleeved outside an annular framework formed by correspondingly combining the first fixing rod 72, the first compensation rod 73, the telescopic rod 75, the second compensation rod 76, the second fixing rod 77 and the fixing ring 78, the upper end of the filter bag 74 is fixedly connected with the lower surface of the circular plate 71, the telescopic force of the filter bag 74 drives the telescopic rod 75 to contract inwards under the action of the first compensation rod 73 and the second compensation rod 76, so that the framework formed by correspondingly combining the first fixing rod 72, the first compensation rod 73, the telescopic rod 75, the second compensation rod 76, the second fixing rod 77 and the fixing ring 78 is integrally contracted, the contraction amplitude of the filter bag 74 is further increased, meanwhile, air in the housing 1 enters the filter bag 74 from the outside of the filter bag 74 under the action of pressure and is then discharged through the first air pump 81, and dust contained in the air is attached to the outside of the filter bag 74;

the pulse mechanism 8: the pulse mechanism 8 increases the flow rate of air below and improves the dust removal efficiency of the air, and is respectively arranged at the upper end of the mounting shell 1 and the upper end of the filtering mechanism 7, the pulse mechanism 8 comprises a first air pump 81, a first electromagnetic valve 82 and an air outlet pipe 83, the air outlet pipe 83 is arranged in a through hole formed at the rear side of the upper surface of the circular plate 71, the first electromagnetic valve 82 is connected in series with the middle part of the air outlet pipe 83, the first air pump 81 is arranged at the rear side of the upper surface of the mounting shell 1, the air suction port of the first air pump 81 is connected with the air outlet pipe 83, the input ends of the first air pump 81 and the first electromagnetic valve 82 are electrically connected with the output end of the PLC 4, the pulse mechanism 8 further comprises an air inlet pipe 84, a second electromagnetic valve 85 and a second air pump 86, the air inlet pipe 84 is arranged in the through hole formed at the front side of the upper surface of the circular plate 71, the second electromagnetic valve 85 is connected in series with the middle part of the air inlet pipe 84, the second air pump 86 is arranged at the front side of the upper surface of the mounting shell 1, the air outlet of the second air pump 86 is connected with the air inlet pipe 84, the input ends of the second air pump 86 and the second electromagnetic valve 85 are electrically connected with the output end of the PLC controller 4, the first electromagnetic valve 82 is opened through the regulation and control of the PLC controller 4, the second electromagnetic valve 85 is closed, the first air pump 81 starts to work, air suction is performed from the inside of the filter bag 74, the air pressure inside the filter bag 74 is reduced, so that the filter bag 74 contracts, after working for a certain time, the external dust-containing gas discharge equipment stops gas discharge, under the regulation and control of the PLC controller 4, the first air pump 81 stops working, the first electromagnetic valve 82 is closed, the second electromagnetic valve 85 is opened, the second air pump 86 starts to work, external air is compressed and then blown into the inside of the filter bag 74, the pressure inside the filter bag 74 is instantly increased, the filter bag 74 expands outwards, and meanwhile, the internal framework is driven to expand outwards, so that the expansion amplitude of the filter bag 74 is increased, dust attached to the outside of the filter bag 74 is shaken off in the process of expanding the filter bag 74;

wherein: still include support frame 3, support frame 3 supports the top part, support frame 3 sets up in the lower extreme of installation shell 1, the square slab upper surface middle part that support frame 3 below set up is equipped with ash storage box 5, ash storage box 5 provides a place of keeping in for the dust, the mouth of pipe that uses outside to take out the material equipment to set up through ash storage box 5 below can take out the inside dust of ash storage box 5, the upper end opening of ash storage box 5 and the lower extreme opening fixed connection of installation shell 1, the leading flank lower extreme of support frame 3 is equipped with PLC controller 4, PLC controller 4 regulates and control the normal operating of each part, external power source is connected to PLC controller 4's input electricity.

The working principle of the high-voltage pulse dust collector for producing dehydrated vegetables provided by the utility model is as follows: the external dust-containing gas discharge device discharges dust-containing gas into the mounting shell 1 through the gas inlet 2, large particle dust contained in the gas automatically falls under the blocking of the guide plate 61 and the inclined plate 64, then falls into the dust storage box 5 through an opening below the mounting shell 1, small particle dust and air enter the upper part of the inside of the mounting shell 1 through the square opening 62, the first electromagnetic valve 82 is opened through the regulation and control of the PLC 4, the second electromagnetic valve 85 is closed, the first air pump 81 starts to work, air is sucked from the inside of the filter bag 74, the air pressure inside the filter bag 74 is reduced, so that the filter bag 74 contracts, the contraction force of the filter bag 74 can drive the telescopic rod 75 to contract inwards under the action of the first compensation rod 73 and the second compensation rod 76, and therefore the first fixing rod 72, the first compensation rod 73, the telescopic rod 75, the second compensation rod 76, the second fixing rod 77 and the fixing ring 78 are combined to form a framework integrally contracted, further increasing the contraction amplitude of the filter bag 74, meanwhile, the air inside the mounting housing 1 enters the interior of the filter bag 74 from the outside of the filter bag 74 under the pressure effect, then is discharged through the first air pump 81, the dust contained in the air is attached to the outside of the filter bag 74, after working for a certain time, the external dust-containing gas discharge device stops gas discharge, under the regulation and control of the PLC 4, the first air pump 81 stops working, the first electromagnetic valve 82 is closed, the second electromagnetic valve 85 is opened, the second air pump 86 starts working, the external air is compressed and then is blown into the interior of the filter bag 74, the pressure inside the filter bag 74 is instantly increased, the filter bag 74 expands outwards, and meanwhile, the internal framework is driven to expand outwards, so that the expansion amplitude of the filter bag 74 is increased, the dust attached to the outside of the filter bag 74 is shaken off in the expansion process of the filter bag 74, and the falling dust enters the interior of the mounting housing 1 through the square opening 62 under the flow guiding effect of the guide plate 61, and finally, the dust enters the dust storage box 5 through an opening below the mounting shell 1, and the dust in the dust storage box 5 can be extracted through a pipe orifice arranged below the dust storage box 5 by using external material extracting equipment.

It should be noted that, the specific model of the PLC controller 4 disclosed in the above embodiment is S7-200, the first air pump 81 and the second air pump 86 can be respectively a high pressure air pump with model RB-81D-3, the first electromagnetic valve 82 and the second electromagnetic valve 85 can be respectively an electromagnetic valve with model SLPM, and the PLC controller 4 controls the first air pump 81, the second air pump 86, the first electromagnetic valve 82 and the second electromagnetic valve 85 to operate by a method commonly used in the prior art.

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.

Claims

1. A high-pressure pulse dust remover for production of dehydrated vegetables is characterized in that: comprises a mounting shell (1), a slow flow mechanism (6), a filtering mechanism (7) and a pulse mechanism (8);

mounting the housing (1): the middle part of the left side surface of the lower ladder platform cover is provided with an air inlet (2), and the air inlet (2) is communicated with external dust-containing gas discharge equipment;

flow slowing mechanism (6): is arranged at the lower end of the inner part of the mounting shell (1);

a filter mechanism (7): is arranged in a mounting hole arranged in the middle of a top sealing plate of the mounting shell (1);

pulse mechanism (8): are respectively arranged at the upper end of the mounting shell (1) and the upper end of the filtering mechanism (7);

wherein: still include support frame (3), support frame (3) set up in the lower extreme of installation shell (1), and the square slab upper surface middle part that support frame (3) below set up is equipped with ash storage box (5), the upper end opening of ash storage box (5) and the lower extreme opening fixed connection of installation shell (1).

2. The high-voltage pulse dust collector for dehydrated vegetable production according to claim 1, wherein: the front side lower extreme of support frame (3) is equipped with PLC controller (4), and external power source is connected to the input electricity of PLC controller (4).

3. The high-voltage pulse dust collector for dehydrated vegetable production according to claim 1, wherein: the flow slowing mechanism (6) comprises a square opening (62), a flow slowing plate (63) and an inclined plate (64), the flow slowing plate (63) is arranged at the lower end of the inner portion of the installation shell (1), the square opening (62) is evenly arranged in the middle of the upper surface of the flow slowing plate (63), the inclined plate (64) is evenly arranged on the lower surface of the flow slowing plate (63), and the square opening (62) and the inclined plate (64) are arranged at intervals.

4. The high-voltage pulse dust collector for dehydrated vegetable production according to claim 3, wherein: the flow slowing mechanism (6) further comprises guide plates (61), and the guide plates (61) are uniformly distributed on the upper surface of the flow slowing plate (63).

5. The high-voltage pulse dust collector for dehydrated vegetable production according to claim 2, wherein: the filtering mechanism (7) comprises a circular plate (71), a first fixing rod (72), a first compensating rod (73), a filter bag (74), a telescopic rod (75), a second compensating rod (76), a second fixing rod (77) and a fixing ring (78), the circular plate (71) is arranged in a mounting port formed in the middle of a top sealing plate of the mounting shell (1), the first fixing rod (72) is uniformly arranged on the outer side of the lower surface of the circular plate (71), the first compensating rod (73) is hinged to the lower end of the first fixing rod (72) through hinges respectively, the telescopic rod (75) is hinged to the lower end of the first compensating rod (73) through hinges respectively, the second compensating rod (76) is hinged to the lower end of the telescopic rod (75) through hinges respectively, the second fixing rod (77) is hinged to the lower end of the second compensating rod (76) through hinges respectively, and the lower end of the second fixing rod (77) is fixedly connected with the fixing ring (78), the rotation direction of the hinge points to the central axis of the circular plate (71), the filter bag (74) is sleeved outside the annular framework formed by correspondingly combining the first fixing rod (72), the first compensation rod (73), the telescopic rod (75), the second compensation rod (76), the second fixing rod (77) and the fixing ring (78), and the upper end of the filter bag (74) is fixedly connected with the lower surface of the circular plate (71).

6. The high-voltage pulse dust collector for dehydrated vegetable production according to claim 5, wherein: pulse mechanism (8) include first air pump (81), first solenoid valve (82) and outlet duct (83), outlet duct (83) set up in the through-hole that the upper surface rear side of plectane (71) was seted up, and first solenoid valve (82) are established ties in the middle part of outlet duct (83), and first air pump (81) set up in the upper surface rear side of installation shell (1), and the induction port and the outlet duct (83) of first air pump (81) are connected, and the output of PLC controller (4) is connected to the equal electricity of input of first air pump (81) and first solenoid valve (82).

7. The high-voltage pulse dust collector for dehydrated vegetable production according to claim 5, wherein: pulse mechanism (8) still includes intake pipe (84), second solenoid valve (85) and second air pump (86), intake pipe (84) set up in the through-hole that the upper surface front side of plectane (71) was seted up, second solenoid valve (85) are established ties in the middle part of intake pipe (84), second air pump (86) set up in the upper surface front side of installation shell (1), the gas outlet and the intake pipe (84) of second air pump (86) are connected, the output of PLC controller (4) is all connected electrically to the input of second air pump (86) and second solenoid valve (85).