CN210097339U

CN210097339U - Blast heating adsorption dryer

Info

Publication number: CN210097339U
Application number: CN201920173191.XU
Authority: CN
Inventors: 贾星辉; 郝园园; 张征帆
Original assignee: HANGZHOU RISHENG PURIFICATION EQUIPMENT CO Ltd
Current assignee: HANGZHOU RISHENG PURIFICATION EQUIPMENT CO Ltd
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2020-02-21
Anticipated expiration: 2029-01-31

Abstract

The utility model relates to a drying equipment technical field discloses blast air heating adsorption dryer, it includes the A tower, the B tower, first be responsible for, first minute pipe, the second is responsible for and the second divides the pipe, the lower extreme of A tower and B tower all is responsible for the intercommunication through first minute pipe and first, the upper end of A tower and B tower all is responsible for the intercommunication through the second minute pipe and second, still include the punching press pipe, be provided with the pneumatic ball valve of punching press on the punching press pipe, the punching press pipe is divided the pipe with the second and is parallelly connected, still include regeneration admission line and regeneration exhaust duct, be provided with first air-blower on the regeneration admission line, the second air-blower, V1 valve member and electric heater. The utility model discloses alternating circulation adsorption and regeneration flow of tower A and tower B, utilize the pneumatic ball valve of punching press to control the pressure-equalizing and pressure-accumulating of tower A and tower B, simple structure, the convenience is good; two blowers are arranged, so that high efficiency and energy saving are realized; the cold blowing loop is combined with the regeneration air inlet pipeline and the regeneration exhaust pipeline, so that the production cost is saved, and meanwhile, the adsorbent in the tower body can be thoroughly regenerated.

Description

Blast heating adsorption dryer

Technical Field

The utility model relates to a drying equipment technical field has especially related to blast air heating adsorption dryer.

Background

In the field of dryers, the types of dryers we use are various, and the equipment performance and energy consumption are different. The common blast dryer system is complex, the performance requirement of each part is high, the manufacturing cost is relatively high, and the energy consumption is overhigh. The air blast regeneration adsorption dryer is an energy-saving compressed air drying device, and adopts an ambient air blast regeneration process, so that a large amount of product gas required by the traditional process regeneration can be saved.

Chinese patent No. CN204816167U, air-blast reheat adsorption dryer, it includes first drying tower and second drying tower, the upper end of first drying tower and second drying tower be linked together through hot-blast pipeline and the air-blower that can introduce the natural air respectively, hot-blast pipeline on be equipped with electric heater, the lower extreme of first drying tower and second drying tower inserts atmospheric cold air pipe way through the outer end respectively, cold air pipe way on the intercommunication have a tuber pipe, the play tuber pipe be connected with the muffler, hot-blast pipeline be linked together with the dry air output tube. Has the advantages that: the first drying tower and the second drying tower are alternately adsorbed and regenerated, so that the production efficiency is improved, and the actual air volume of the compressed air is reduced. However, because the heating gas quantity and the cooling gas quantity are small, the phenomenon that the adsorbent is not regenerated completely is easily generated, so that the dew point of the finished product gas is higher or the dew point drift is too large, and the gas using requirement of a user cannot be met; although the dryer adopts natural atmosphere for regeneration, the pipeline structure is long, natural atmosphere is adopted for direct cooling in the cooling process, the efficiency is low, the power consumption is large, and the overall design is not beneficial to energy conservation and consumption reduction of equipment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to blast air heating adsorption dryer equipment is complicated among the prior art, and the energy consumption is big, and heating tolerance is little with the forced air cooling tolerance, and adsorbent regeneration is not thorough, shortcoming such as inefficiency, provides an equipment structure simple reasonable, and the energy consumption is little, the efficient blast air heating adsorption dryer of adsorbent regeneration.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the blowing heating adsorption dryer comprises a tower A, a tower B, a first main pipe, a first branch pipe, a second main pipe and a second branch pipe, wherein the lower ends of the tower A and the tower B are communicated with the first main pipe through the first branch pipe, the first branch pipe is provided with an A1 valve and a B1 valve, the A1 valve controls the communication between the first main pipe and the tower A, the B1 valve controls the communication between the first main pipe and the tower B, the upper ends of the tower A and the tower B are communicated with the second main pipe through the second branch pipe, the second branch pipe is provided with an A2 valve and a B2 valve, the A2 valve controls the communication between the second main pipe and the tower A, the B2 valve controls the communication between the second main pipe and the tower B, the blowing heating adsorption dryer further comprises a punching pipe, a punching pneumatic ball valve is arranged on the punching pipe, the punching pipe is connected with the second branch pipe in parallel, one end of the punching pipe is communicated between the tower A2 and the tower A, and the other end of the punching pipe is communicated between the B2 and the tower B, and, the regeneration air inlet pipeline is communicated with the upper ends of the tower A and the tower B, the regeneration exhaust pipeline is communicated with the lower ends of the tower A and the tower B, a first air blower, a second air blower, a V1 valve and an electric heater are arranged on the regeneration air inlet pipeline, air outside the system sequentially passes through the first air blower, the second air blower, the V1 valve and the electric heater to form regeneration air, the regeneration air flows into the tower A or the tower B to heat and regenerate the adsorbent, and the regeneration air flows out from the lower end of the tower A or the tower B and is exhausted through the regeneration exhaust pipeline. Parallelly connected punching press pipe and second minute pipe, utilize the pneumatic ball valve of punching press to realize the pressure accumulation in the tower body, compare and set up two punching press pipes and two control valve members and realize the pressure accumulation in the tower body among the prior art, with low costs, the convenience is good, and the structure is simpler, and it is more convenient to operate. Air in the environment is adopted as the regeneration gas, so that the gas consumption is effectively saved, two air blowers are further arranged, the adsorbent in the tower body is heated and regenerated by matching of the double air blowers and the electric heater, the heating gas quantity is effectively increased, the regeneration capacity is improved, the adsorbent is ensured to be heated and regenerated more thoroughly, and the gas consumption is further reduced.

Preferably, the regeneration air inlet pipeline comprises a third main pipe and a third branch pipe, the third branch pipe is connected with the second branch pipe in parallel, an A3 valve and a B3 valve are arranged on the third branch pipe, the A3 valve controls the communication between the third main pipe and the tower A, and the B3 valve controls the communication between the third main pipe and the tower B; the regeneration exhaust pipeline comprises a fourth main pipe and a fourth branch pipe, the fourth branch pipe is connected with the first branch pipe in parallel, an A4 valve and a B4 valve are arranged on the fourth branch pipe, the A4 valve controls the communication between the fourth main pipe and the tower A, the B4 valve controls the communication between the fourth main pipe and the tower B, and the outlet end of the fourth main pipe is also provided with a V2 valve for controlling the discharge of regeneration gas; the regeneration air inlet pipeline and the regeneration exhaust pipeline are simple and reasonable in structure, and the adsorbent in the tower body can be thoroughly regenerated by controlling the valves on the related pipelines, so that the drying efficiency of the dryer is effectively improved.

Preferably, one end of the third main pipe is communicated between the A3 valve and the B3 valve, the other end of the third main pipe is connected with the electric heater, the air conditioner further comprises a V3 valve, a V4 valve and a cooler, two ends of the V3 valve are respectively connected with the fourth main pipe and the second blower, one end of the cooler is connected with the first blower, the other end of the cooler is connected with the third main pipe through a V4 valve, and high-temperature air flowing out of the tower A or the tower B flows back to the tower A or the tower B through the fourth branch pipe, the fourth main pipe, the V3 valve, the second blower, the first blower, the cooler, the V4 valve, the third main pipe and the third branch pipe to form a cold blowing regeneration loop. The cold blowing regeneration loop is combined with the regeneration air inlet pipeline and the regeneration exhaust pipeline, so that the pipeline structure is simpler, the double-blower is matched with the cooler for circulating cooling regeneration, the cold blowing amount is effectively increased, the cold blowing regeneration efficiency of the adsorbent is improved, and the cold blowing regeneration of the adsorbent can be thorough, efficient and energy-saving; meanwhile, the defects of short switching time and large gas consumption of a non-heat regeneration dryer are avoided, and the defect of large power consumption of a heat regeneration air dryer is also avoided.

Preferably, the first main pipe is provided with a T1 temperature sensor for detecting the inlet air temperature; a T2 temperature sensor for detecting the dew point temperature of the outlet air is arranged on the second main pipe; a T3 temperature sensor for detecting the temperature of the regeneration gas heated by the electric heater is arranged on the third main pipe; and a T4 temperature sensor for detecting the temperature of the regeneration gas flowing out through the fourth branch pipe is arranged on the fourth main pipe. The T1 temperature sensor, the T2 temperature sensor, the T3 temperature sensor and the T4 temperature sensor are effectively combined, so that an operator can conveniently monitor the overall working state of the equipment.

Preferably, the lower end of the tower A is connected with a first silencer, the lower end of the tower B is connected with a second silencer, the tower A further comprises an A5 valve element and a B5 valve element, the A5 valve element controls the communication between the first silencer and the tower A, and the B5 valve element controls the communication between the second silencer and the tower B. The first silencer is matched with an A5 valve to control air pressure relief and discharge in the tower body of the tower A conveniently, and the second silencer is matched with a B5 valve to control air pressure relief and discharge in the tower body of the tower B conveniently, so that preparation is made for the heating and regeneration stage of the adsorbent.

Preferably, the inlet end of the regeneration air inlet pipeline is provided with a blower air inlet filter; the inlet end of the first main pipe is provided with an oil and dust removing filter. The air inlet filter of the blower can filter a regenerated air source from the environment, so that the regenerated air source is clean; the oil and dust removing filter can filter compressed air to be treated, oil and dust are removed, cleanness of compressed and dried finished air is guaranteed, and corrosion of impurities in the air to equipment is avoided.

Preferably, an air pressure gauge and a safety valve are arranged on the tower A and the tower B. The safety of tower body equipment is convenient to guarantee.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the utility model discloses alternating circulation absorption and regeneration flow of tower A and tower B, overall structure reasonable in design, adsorbent regeneration efficiency is high, and the energy consumption is little, connects the punching press pipe in parallel with the second branch pipe, utilizes a punching press pneumatic ball valve to realize the pressure accumulation in the tower body, and simple structure, with low costs, the convenience is good; the first air blower and the second air blower are arranged, and the two air blowers and the electric heater are matched to heat and regenerate the adsorbent in the tower body, so that the heating air quantity is effectively increased, the regeneration capacity is improved, the heating and regeneration of the adsorbent are more thorough, and the air consumption is further reduced; the regeneration air inlet pipeline and the regeneration exhaust pipeline are simple and reasonable in structure, a cold blowing regeneration loop is combined with the regeneration air inlet pipeline and the regeneration exhaust pipeline, so that the pipeline structure is simpler, two blowers and a cooler are matched for circulating cooling regeneration, the cold blowing amount is effectively increased, the cold blowing regeneration efficiency of the adsorbent is improved, the cold blowing regeneration of the adsorbent is ensured to be thorough, the efficiency and the energy are high, the defects of short switching time and large gas consumption of a heat-free regeneration dryer are avoided, and the defect of large electric energy loss of the heat-regeneration air dryer is also avoided; the T1 temperature sensor, the T2 temperature sensor, the T3 temperature sensor and the T4 temperature sensor are effectively combined, so that an operator can conveniently monitor the overall working state of the equipment, and the production efficiency of the equipment is improved; the air inlet filter and the oil and dust removing filter of the air blower can ensure the cleanness of the finished gas.

Drawings

Fig. 1 is a schematic view of the structure of the air-blast heating adsorption dryer in example 1.

Fig. 2 is a schematic view of the structure of the air-blast heating adsorption dryer in example 2.

FIG. 3 is a schematic view of the structure of the forced air heated adsorption dryer of example 3.

The names of the parts indicated by the numerical references in the drawings are as follows: the system comprises a tower 1-A, a tower 11-first silencer, a tower 2-B, a tower 21-second silencer, a pressure gauge 121-air, a safety valve 122-safety valves, a first main pipe 3-31-first branch pipe 32-oil and dust removing filter 4-second main pipe 41-second branch pipe 5-stamping pipe 51-stamping pneumatic ball valve 6-third main pipe 61-first blower 62-second blower 63-electric heater 64-third branch pipe 65-blower air inlet filter 7-fourth main pipe 71-fourth branch pipe 8-cooler.

Detailed Description

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

Example 1

The blowing heating adsorption dryer comprises an A tower 1, a B tower 2, a first main pipe 3, a first branch pipe 31, a second main pipe 4 and a second branch pipe 41, wherein the lower ends of the A tower 1 and the B tower 2 are communicated with the first main pipe 3 through the first branch pipe 31, the first branch pipe 31 is provided with an A1 valve and a B1 valve, the A1 valve controls the communication between the first main pipe 3 and the A tower 1, the B1 valve controls the communication between the first main pipe 3 and the B tower 2, the upper ends of the A tower 1 and the B tower 2 are communicated with the second main pipe 4 through the second branch pipe 41, the second branch pipe 41 is provided with an A2 valve and a B2 valve, the A2 valve controls the communication between the second main pipe 4 and the A tower 1, the B2 valve controls the communication between the second main pipe 4 and the B tower 2, the punching pipe 5 is further provided with a punching pneumatic valve 51, the punching pipe 5 is connected with the second branch pipe 41 in parallel, one end of the punching pipe 5 is communicated between the A tower 1 and the A tower 2, the other end of the punching pipe 5 is communicated between the B2 valve and the B tower 2, the regeneration air inlet pipeline and the regeneration exhaust pipeline are further included, the regeneration air inlet pipeline is communicated with the upper ends of the A tower 1 and the B tower 2, the regeneration exhaust pipeline is communicated with the lower ends of the A tower 1 and the B tower 2, a first air blower 61, a second air blower 62, a V1 valve and an electric heater 63 are arranged on the regeneration air inlet pipeline, air outside the system sequentially passes through the first air blower 61, the second air blower 62, the V1 valve and the electric heater 63 to form regeneration gas, the regeneration gas flows into the A tower 1 or the B tower 2 to heat and regenerate the adsorbent, and then flows out from the lower end of the A tower 1 or the B tower 2 and is discharged through the regeneration exhaust pipeline. Parallelly connected pipe 5 and second minute 41, utilize the pneumatic ball valve 51 of punching press to realize the internal pressure accumulation of tower, compare and set up two punching press pipes 5 and two control valve members among the prior art and realize the internal pressure accumulation of tower, with low costs, the convenience is good, and the structure is simpler, and it is more convenient to operate. Air in the environment is adopted as regenerated gas, so that the gas consumption is effectively saved, two air blowers are further arranged, the adsorbent in the tower body is heated and regenerated by matching the double air blowers and the electric heater 63, the heating gas quantity is effectively increased, the regeneration capacity is improved, the adsorbent is ensured to be heated and regenerated more thoroughly, and the gas consumption is further reduced.

The regeneration air inlet pipeline comprises a third main pipe 6 and a third branch pipe 64, the third branch pipe 64 is connected with the second branch pipe 41 in parallel, an A3 valve and a B3 valve are arranged on the third branch pipe 64, the A3 valve controls the communication between the third main pipe 6 and the A tower 1, and the B3 valve controls the communication between the third main pipe 6 and the B tower 2; the regeneration exhaust pipeline comprises a fourth main pipe 7 and a fourth branch pipe 71, the fourth branch pipe 71 is connected with the first branch pipe 31 in parallel, an A4 valve and a B4 valve are arranged on the fourth branch pipe 71, the A4 valve controls the communication between the fourth main pipe 7 and the A tower 1, the B4 valve controls the communication between the fourth main pipe 7 and the B tower 2, and a V2 valve for controlling the exhaust of regeneration gas is further arranged at the outlet end of the fourth main pipe 7; the regeneration air inlet pipeline and the regeneration exhaust pipeline are simple and reasonable in structure, and the adsorbent in the tower body can be thoroughly regenerated by controlling the valves on the related pipelines, so that the drying efficiency of the dryer is effectively improved.

One end of the third main pipe 6 is communicated between an A3 valve and a B3 valve, the other end of the third main pipe 6 is connected with the electric heater 63, the air conditioner further comprises a V3 valve, a V4 valve and a cooler 8, two ends of the V3 valve are respectively connected with the fourth main pipe 7 and the second blower 62, one end of the cooler 8 is connected with the first blower 61, the other end of the cooler 8 is connected with the third main pipe 6 through a V4 valve, and high-temperature air flowing out of the A tower 1 or the B tower 2 flows back to the A tower 1 or the B tower 2 through the fourth branch pipe 71, the fourth main pipe 7, the V3 valve, the second blower 62, the first blower 61, the cooler 8, the V4 valve, the third main pipe 6 and the third branch pipe 64 to form a cold blowing regeneration loop. The cold blowing regeneration loop is combined with the regeneration air inlet pipeline and the regeneration exhaust pipeline, so that the pipeline structure is simpler, the double-blower is matched with the cooler 8 for circulating cooling regeneration, the cold blowing amount is effectively increased, the cold blowing regeneration efficiency of the adsorbent is improved, and the cold blowing regeneration of the adsorbent can be thorough, efficient and energy-saving; meanwhile, the defects of short switching time and large gas consumption of a non-heat regeneration dryer are avoided, and the defect of large power consumption of a heat regeneration air dryer is also avoided.

The first main pipe 3 is provided with a T1 temperature sensor for detecting the temperature of inlet air; a T2 temperature sensor for detecting the dew point temperature of the outlet air is arranged on the second main pipe 4; a T3 temperature sensor for detecting the temperature of the regeneration gas heated by the electric heater 63 is provided on the third main pipe 6; the fourth main pipe 7 is provided with a T4 temperature sensor for detecting the temperature of the regeneration gas flowing out through the fourth branch pipe 71. The T1 temperature sensor, the T2 temperature sensor, the T3 temperature sensor and the T4 temperature sensor are effectively combined, so that an operator can conveniently monitor the overall working state of the equipment.

The lower end of the tower A1 is connected with a first silencer 11, the lower end of the tower B2 is connected with a second silencer 21, the tower A further comprises an A5 valve and a B5 valve, the A5 valve controls the communication between the first silencer 11 and the tower A1, and the B5 valve controls the communication between the second silencer 21 and the tower B2. The first silencer 11 is matched with an A5 valve to control air pressure relief and emission in the tower body of the A tower 1 conveniently, and the second silencer 21 is matched with a B5 valve to control air pressure relief and emission in the tower body of the B tower 2 conveniently, so that preparation is made for the heating and regeneration stage of the adsorbent.

The working process is as follows: when the A tower 1 is in the adsorption process, the B tower 2 is in the regeneration process. When the A tower 1 is in an adsorption process, B1 valve elements, A4 valve elements, A3 valve elements, B2 valve elements and the ram air ball valve 51 are closed, A1 valve elements and A2 valve elements are opened, untreated compressed air enters from the first main pipe 3 and enters the A tower 1 through the A1 valve elements, the adsorbent in the tower body adsorbs moisture in the compressed air, and the dried compressed air is discharged from the A2 valve elements to the second main pipe 4.

The regeneration process of the tower B2 sequentially comprises 4 stages of (1) tower body pressure relief, (2) heating regeneration, (3) cold blowing regeneration and (4) tower body pressure accumulation preparation. (1) And (3) tower body pressure relief: the valve B5 is opened, the air flowing out from the lower end of the tower B2 flows through the valve B5 to the second silencer 21 for pressure relief until the pressure in the tower B2 is the same as the atmospheric pressure; (2) heating and regenerating: b5 valve parts, V3 valve parts, V4 valve parts, A3 valve parts and A4 valve parts are closed, V1 valve parts, B3 valve parts, B4 valve parts and V2 valve parts are opened, a first blower 61, a second blower 62 and an electric heater 63 are started, a regeneration gas source from the external environment is sucked by the first blower 61 and the second blower 62 and then heated by the V1 valve parts to the electric heater 63, the heated high-temperature regeneration gas enters the B tower 2 from the upper end of the B tower 2 through the B3 valve parts and adsorbs moisture to the adsorbent, the regeneration is analyzed, the high-temperature regeneration gas containing a large amount of moisture flows out from the lower end of the B tower 2 and is discharged after passing through the B4 valve parts and the V2 valve parts; (3) cold blowing regeneration, closing a V1 valve and a V2 valve, closing an electric heater 63, opening a V3 valve and a V4 valve, starting a cooler 8, sucking high-temperature air flowing out from the lower end of the B tower 2 to a second air blower 62 and a first air blower 61 through the B4 valve and the V3 valve, cooling the air by the cooler 8, allowing the cooled air to enter the B tower 2 from the upper end of the B tower 2 through the V4 valve and the B3 valve, blowing cold to the adsorbent in the B tower 2, and circularly blowing cold and regenerating until the temperature of the adsorbent in the B tower 2 meets the adsorption temperature; (4) the tower body is pressure-accumulating, the V3 valve and the V4 valve are closed, the cooler 8, the first air blower 61 and the second air blower 62 are closed, the stamping start ball valve is opened, and a part of dry compressed air flows out from the upper end of the tower A1 and then enters the tower B2 through the stamping pipe 5 until the tower B2 reaches operable adsorption pressure. At this time, the column B2 as the regeneration column can be switched to the column a1 to enter the adsorption process, the column a1 as the adsorption column is switched to the column B2 to enter the regeneration process, and the column a1 and the column B2 alternately circulate the adsorption and regeneration processes.

Example 2

The blast heating adsorption dryer, as shown in fig. 2, differs from the embodiment 1 in that: the inlet end of the regeneration air inlet pipeline is provided with a blower air inlet filter 65; the inlet end of the first main pipe 3 is provided with an oil and dust removing filter 32. The blower air inlet filter 65 can filter the regenerated air source from the environment, so that the regenerated air source is clean; the oil and dust removing filter 32 can filter the compressed air to be treated, remove oil and dust, ensure the cleanness of the compressed and dried finished air, and avoid the corrosion of impurities in the air to the equipment.

Example 3

The blast heating adsorption dryer, as shown in fig. 3, differs from the embodiment 2 in that: an air pressure gauge 121 and a safety valve 122 are arranged on the tower A1 and the tower B2. The safety of tower body equipment is convenient to guarantee.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. A blowing heating adsorption dryer comprises a tower A (1), a tower B (2) and a first main pipe (3), first minute pipe (31), second person in charge (4) and second minute pipe (41), the lower extreme of A tower (1) and B tower (2) all communicates with first person in charge (3) through first minute pipe (31), be provided with A1 valve member and B1 valve member on first minute pipe (31), the intercommunication of first person in charge (3) and A tower (1) is controlled to A1 valve member, the intercommunication of first person in charge (3) and B tower (2) is controlled to B1 valve member, the upper end of A tower (1) and B tower (2) all communicates with second person in charge (4) through second minute pipe (41), be provided with A2 valve member and B2 on second minute pipe (41), the intercommunication of second person in charge (4) and A tower (1) is controlled to A2 valve member, B2 control second person in charge (4) and B tower (2) the intercommunication, its characterized in that: the adsorption agent regeneration system is characterized by further comprising a stamping pipe (5), wherein a stamping pneumatic ball valve (51) is arranged on the stamping pipe (5), the stamping pipe (5) is connected with a second branch pipe (41) in parallel, one end of the stamping pipe (5) is communicated between an A2 valve and a tower A (1), the other end of the stamping pipe (5) is communicated between a B2 valve and a tower B (2), the adsorption agent regeneration system further comprises a regeneration air inlet pipeline and a regeneration exhaust pipeline, the regeneration air inlet pipeline is communicated with the upper ends of the tower A (1) and the tower B (2), the regeneration exhaust pipeline is communicated with the lower ends of the tower A (1) and the tower B (2), a first air blower (61), a second air blower (62), a V1 air blower and an electric heater (63) are arranged on the regeneration air inlet pipeline, air outside the system sequentially passes through the first air blower (61), the second air blower (62), the V1 valve and the electric heater (63) to form regeneration gas which flows into the tower A (1) or the tower B, then flows out from the lower end of the tower A (1) or the tower B (2) and is discharged through a regeneration exhaust pipeline.

2. The air-blast heating adsorption dryer according to claim 1, characterized in that: the regeneration air inlet pipeline comprises a third main pipe (6) and a third branch pipe (64), the third branch pipe (64) is connected with the second branch pipe (41) in parallel, an A3 valve and a B3 valve are arranged on the third branch pipe (64), the A3 valve controls the communication between the third main pipe (6) and the tower A (1), and the B3 valve controls the communication between the third main pipe (6) and the tower B (2); the regeneration exhaust pipeline comprises a fourth main pipe (7) and a fourth branch pipe (71), the fourth branch pipe (71) is connected with the first branch pipe (31) in parallel, an A4 valve and a B4 valve are arranged on the fourth branch pipe (71), the A4 valve controls the communication between the fourth main pipe (7) and the A tower (1), the B4 valve controls the communication between the fourth main pipe (7) and the B tower (2), and a V2 valve for controlling the exhaust of regeneration gas is further arranged at the outlet end of the fourth main pipe (7).

3. The air-blast heating adsorption dryer according to claim 2, characterized in that: one end of a third main pipe (6) is communicated between an A3 valve and a B3 valve, the other end of the third main pipe (6) is connected with an electric heater (63), the air conditioner further comprises a V3 valve, a V4 valve and a cooler (8), two ends of the V3 valve are respectively connected with a fourth main pipe (7) and a second blower (62), one end of the cooler (8) is connected with a first blower (61), the other end of the cooler (8) is connected with the third main pipe (6) through a V4 valve, and high-temperature air flowing out of the tower A (1) or the tower B (2) flows back to the tower A (1) or the tower B (2) to form a cold blowing regeneration loop through a fourth branch pipe (71), the fourth main pipe (7), the V3 valve, the second blower (62), the first blower (61), the cooler (8), the V4 valve, the third main pipe (6) and a third branch pipe (64).

4. The air-blast heating adsorption dryer of claim 3, wherein: a T1 temperature sensor for detecting the temperature of inlet air is arranged on the first main pipe (3); a T2 temperature sensor for detecting the dew point temperature of the outlet air is arranged on the second main pipe (4); a T3 temperature sensor for detecting the temperature of the regeneration gas heated by the electric heater (63) is arranged on the third main pipe (6); the fourth main pipe (7) is provided with a T4 temperature sensor for detecting the temperature of the regeneration gas flowing out through the fourth branch pipe (71).

5. The air-blast heating adsorption dryer according to claim 1, characterized in that: the lower extreme of A tower (1) is connected with first muffler (11), and the lower extreme of B tower (2) is connected with second muffler (21), still includes A5 valve member and B5 valve member, and the intercommunication of first muffler (11) and A tower (1) is controlled to A5 valve member, and the intercommunication of second muffler (21) and B tower (2) is controlled to B5 valve member.

6. The air-blast heating adsorption dryer according to claim 1, characterized in that: the inlet end of the regeneration air inlet pipeline is provided with a blower air inlet filter (65); the inlet end of the first main pipe (3) is provided with an oil and dust removing filter (32).

7. The air-blast heating adsorption dryer according to claim 1, characterized in that: an air pressure gauge (121) and a safety valve (122) are arranged on the tower A (1) and the tower B (2).