CN221207345U - Tail gas treatment device of dryer - Google Patents

Abstract

The utility model discloses a tail gas treatment device of a dryer, which comprises a buffer tank and a collecting tower positioned above the buffer tank, wherein the lower end in the buffer tank is provided with a water storage area and a stirring device, two sides of the top of the buffer tank are respectively provided with an air inlet pipe and an air outlet pipe communicated with one side of the lower end of the collecting tower, and the bottom of the collecting tower and the top of the buffer tank are connected with a liquid discharge pipe with the bottom end extending into the bottom of the water storage area; the collecting tower comprises a shell with a cleaning door and an upper inner cylinder with two ends penetrating and detachably connected in the upper end of the shell, the upper inner cylinder is detachably connected with a spiral baffle plate provided with a plurality of groups of filtering holes, a cooling coil pipe with two ends of which pipe orifices are positioned at the upper layer in the water storage area is arranged above the outer side of the water storage area, an upper spraying device connected with a clear liquid circulating pipe between the pipe orifices at one end of the cooling coil pipe is arranged in the top end of the shell, the bottom of the buffer tank is connected with a water inlet and a liquid discharge conveying pipe, and a pumping device is arranged between the clear liquid circulating pipe and the liquid discharge conveying pipe; the whole tail gas treatment effect is good, the cleaning is convenient, and the labor cost is low.

Description

Tail gas treatment device of dryer

Technical Field

The utility model belongs to the field of chemical production, and particularly relates to a tail gas treatment device of a dryer.

Background

When the fluoride salt product is produced and processed, drying is an important process flow, most of adopted drying equipment is a roller dryer, the basic structure of the roller dryer is a cylinder, the center of the roller dryer is provided with a main shaft, two ends of the roller dryer are respectively provided with a feed inlet and a discharge outlet, and the roller dryer can generate a large amount of high-temperature tail gas containing dust in the process of processing and drying the fluoride salt product;

The traditional dust-containing tail gas treatment mode of the roller dryer generally adopts a mode of installing a dust collecting bag to filter and collect dust, hot air and dust of the tail gas are discharged through the dust collecting bag made of non-woven fabrics or woven fabrics, large-particle dust can be collected in the dust collecting bag, small-particle dust can be discharged outside the dust collecting bag, the small-particle dust cannot be collected and treated in the mode, the temperature of the production environment can be influenced by the discharged hot air, the energy consumption is increased, and the defects exist in the assembly, disassembly and cleaning of a collecting bag structure, and the collecting bag is required to be assembled, disassembled and cleaned manually frequently, so that the problems of poor dust collection and recovery effect, high energy consumption and high labor intensity are caused; in order to solve the problem of tail gas cooling, the existing drier adopts a spray collecting box provided with a spray header in the installation to spray dust fall and cool down the tail gas once, however, high-temperature tail gas is in direct contact with spray water with low temperature, powder substances with strong viscosity in the tail gas are easily caused to be coagulated into blocks to cause spray header blockage, or the inner wall of a dust removing box is adhered with the powder substances, and the existing dust removing box is of an integral fixed structure, so that the inside of the box is difficult to clean, the precipitated powder at the bottom of the box also needs to be provided with a plurality of leaching tanks for manually transporting and recycling the last procedure, the dust collecting and recycling effect and the tail gas cooling effect are also influenced for a long time, the energy consumption is large, the integral tail gas treatment effect is poor, the cleaning in the dust removing box is difficult and the labor cost is large.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model aims to provide the tail gas treatment device of the dryer, which has the advantages of high integral automation degree, capability of greatly improving the integral dust collection and recovery effect and the tail gas cooling effect while avoiding the blockage of a spray header, convenience for cleaning in a buffer tank and a collection tower, good tail gas treatment effect, convenience for cleaning and low labor cost.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The tail gas treatment device of the dryer comprises a buffer tank and a collecting tower positioned above the buffer tank, wherein a water storage area and a stirring device are arranged at the lower end in the buffer tank, an air inlet pipe and an air outlet pipe communicated with one side of the lower end of the collecting tower are respectively arranged at two sides of the top of the buffer tank, an air draft device is arranged in the collecting tower, and the bottom of the collecting tower and the top of the buffer tank are connected with a liquid discharge pipe of which the bottom end extends into the inner bottom of the water storage area; the collecting tower comprises a shell and an upper inner cylinder with two ends penetrating through, the upper inner cylinder is detachably connected to the upper end of the shell, a cleaning door is detachably connected to one side of the shell, an upper spraying device is arranged in the top end of the shell, a spiral baffle is detachably connected to the upper inner cylinder, a plurality of groups of filtering holes are formed in the spiral baffle, two ends of pipe orifices are arranged above the water storage area and are all located on the upper layer of the water storage area, a clear liquid circulating pipe with an electric valve is connected between one end of the cooling pipe and the upper spraying device, a water inlet and a liquid discharging conveying pipe with the electric valve are connected to the bottom of the buffer tank, and a water pumping device is arranged in the middle of the clear liquid circulating pipe and in the middle of the liquid discharging conveying pipe.

Further set up: the middle of shell is interior can be dismantled and be connected with the lower inner tube that both ends run through, lower inner tube inboard can be dismantled along its circumference and be connected with a plurality of inclined baffle, be the mutual crisscross setting in proper order between the inclined baffle from the top down, inclined baffle towards being close to lower inner tube's axis direction slope sets up downwards, inclined baffle with be equipped with down the shower between the spiral baffle, down the shower is installed in the shell, a plurality of lower shower head is installed to the bottom of shower down, down the shower with clear liquid circulating pipe intercommunication.

Further set up: the upper spraying device comprises a plurality of upper spraying pipes and a plurality of upper spraying heads, wherein the upper spraying pipes are arranged in a cross shape, the upper spraying heads are arranged at the bottom of the upper spraying pipes, and the top end of the clear liquid circulating pipe is connected with a filter; and one end of the upper spray pipe and one end of the lower spray pipe are connected with valves and are connected with the filter.

Further set up: the water pumping device comprises a water pumping pump and a connecting pipe, the water pumping pump is arranged on the connecting pipe, the clear liquid circulating pipe comprises a main flow pipe and a clear liquid pipe with an electric valve, one end of the main flow pipe is communicated with the clear liquid pipe through the connecting pipe, the other end of the main flow pipe is communicated with the upper spraying device, the other end of the clear liquid pipe is communicated with one side of the middle of the buffer tank, the liquid draining conveying pipe comprises an underflow calandria and a transit calandria, both of which are provided with the electric valve, and one end of the underflow calandria is communicated with the transit calandria through the connecting pipe.

Further set up: stirring device includes axis of rotation, a set of puddler and a set of puddler down, agitator motor is installed to the buffer tank top, agitator motor's drive end with the axis of rotation top is connected, go up the puddler with down the puddler from the top down installs respectively in proper order the lower extreme of axis of rotation, the bottom of puddler is connected with the scraper blade down, the top of puddler is connected with the hammering board that is the wave setting down, the lug is smashed to a plurality of is installed to the outer peripheral face of last puddler.

Further set up: the cleaning device comprises a shell, an upper inner cylinder, a lower inner cylinder, a cleaning opening, a cleaning door and a locking mechanism, wherein the cleaning opening is formed in one side of the shell, the upper inner cylinder and the lower inner cylinder penetrate through the cleaning opening, one side of the cleaning door is hinged to one side of the cleaning opening, a silica gel foaming sealing strip used for sealing the cleaning opening is connected to the inner side of the cleaning door, and the locking mechanism is connected between the other side of the cleaning door and the cleaning opening.

Further set up: the bottom in the collecting tower is provided with a slope part which is obliquely downwards arranged towards the pipe orifice close to the liquid discharge pipe.

In summary, the utility model plays roles of preliminary dust fall and temperature reduction of tail gas through the buffer tank, the water storage area, the cooling coil, the clear liquid circulating pipe and the water pumping device; the device is used for blocking and impacting and filtering ascending tail gas repeatedly and in multiple directions through the air outlet pipe, the collecting tower, the spiral baffle plate and the filtering holes, and part of dust in the tail gas can fall to the bottom of the collecting tower or is adhered to the inclined baffle plate through impacting or filtering, so that the effect of re-dust falling of the tail gas is achieved; the clear liquid circulating pipe, the water pumping device and the upper spraying device are used for spraying, dust falling and cooling the tail gas by utilizing clear liquid pumped to the upper layer of the water storage area in the upper spraying device, and meanwhile, dust on the spiral baffle is flushed to the bottom in the collecting tower, so that the effect of re-dust falling and cooling the tail gas is achieved; the dust sediment collected twice is automatically gathered together through the liquid discharge pipe; through the liquid discharge conveying pipe, the water pumping device and the stirring device, the liquid and dust sediment in the buffer tank are uniformly stirred to form slurry, and the stirred slurry is pumped and conveyed into an external immersion tank of the previous process through the liquid discharge conveying pipe, so that the slurry for automatically conveying and recycling dust materials is achieved; the electric valve of the water inlet is opened through the water inlet, so that the effect of automatic water supplementing is achieved; the cleaning door, the shell and the inner barrel which are detachably connected with each other are arranged, so that the cleaning difficulty in the collecting tower is reduced; the device has the advantages of high integral automation degree, good tail gas treatment effect, convenient cleaning and low labor cost.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an integral part of an embodiment of the utility model

FIG. 3 is a partial cross-sectional view of a surge tank in an embodiment of the utility model;

FIG. 4 is a partial cross-sectional view of a collection tower in an embodiment of the present utility model;

FIG. 5 is a top view of an upper shower pipe in an embodiment of the present utility model;

FIG. 6 is a top view of a bevel baffle according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a stirring device according to an embodiment of the present utility model.

In the figure: 1. a buffer tank; 2. a collection tower; 3. a water storage area; 4. an air inlet pipe; 5. an air outlet pipe; 6. a liquid discharge pipe; 7. a housing; 8. an upper inner cylinder; 9. cleaning a door; 10. a spiral baffle; 11. a filter hole; 12. a cooling coil; 16. a water inlet; 17. hammering the plate; 18. a lower inner cylinder; 19. a lower spray pipe; 20. a bevel baffle; 21. a lower spray header; 22. a spray pipe is arranged; 23. a top shower head; 24. a filter; 25. a valve; 26. a water pump; 27. a connecting pipe; 28. a main flow tube; 29. a clear liquid pipe; 30. an underflow calandria; 31. transferring the calandria; 32. a rotating shaft; 33. a stirring rod is arranged on the upper part; 34. a lower stirring rod; 35. a stirring motor; 36. a scraper; 37. crushing the convex blocks; 38. cleaning the mouth; 39. silica gel foaming sealing strips; 40. a ramp portion.

Detailed Description

In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings. It should be noted that the words "upper" and "lower" used in the following description refer to directions in fig. 2, and the words "bottom" and "top" refer to directions in fig. 2 toward the geometric center of a particular component.

The most critical concept of the utility model is as follows: the buffer tank 1, the water storage area 3, the cooling coil 12, the clear liquid circulating pipe and the water pumping device play roles in preliminary dust fall and temperature reduction of tail gas; the exhaust gas is subjected to dust fall again through the air outlet pipe 5, the collecting tower 2, the spiral baffle plate 10 and the filtering holes 11; the clean liquid circulating pipe, the water pumping device and the upper spraying device play a role in dust fall and temperature reduction of the tail gas again; through the liquid discharge pipe 6, the dust sediment collected twice is automatically gathered together; through the liquid discharge conveying pipe, the water pumping device and the stirring device, the liquid and dust sediments in the buffer tank 1 are uniformly stirred to form slurry, and the stirred slurry is pumped and conveyed into an external immersion tank of the previous process through the liquid discharge conveying pipe, so that the slurry for automatically conveying and recycling dust materials is achieved; through the water inlet 16, an electric valve of the water inlet 16 is opened to play a role in automatic water supplementing; the cleaning door 9, the shell 7 and the inner barrel which are detachably connected with each other are arranged, so that the cleaning difficulty in the collecting tower 2 is reduced;

The utility model has high integral automation degree, carries out multiple dust fall and cooling on the tail gas, blocks the residual dust agglomeration with larger viscosity on the buffer tank 1 and the spiral baffle plate 10, avoids the direct contact of the spray header, ensures that the dust is completely recovered and conveyed, adopts totally-enclosed conveying to recover the dust, does not need manual conveying and water supplementing, avoids the secondary dust pollution of conveying, greatly improves the integral dust collecting and recovering effect and the tail gas cooling effect, facilitates the cleaning in the buffer tank 1 and the collecting tower 2, and has the advantages of good tail gas treatment effect, convenient cleaning and low labor cost.

Referring to fig. 1 to 7, an exhaust gas treatment device of a dryer includes a buffer tank 1 and a collecting tower 2 above the buffer tank 1, wherein a water storage area 3 and a stirring device are arranged at the inner lower end of the buffer tank 1, an air inlet pipe 4 and an air outlet pipe 5 communicated with one side of the lower end of the collecting tower 2 are respectively arranged at two sides of the top of the buffer tank 1, an air exhausting device is arranged in the collecting tower 2, and a liquid discharge pipe 6 with the bottom end extending into the inner bottom of the water storage area 3 is connected with the bottom of the collecting tower 2 and the top of the buffer tank 1; the collecting tower 2 comprises a shell 7 and an upper inner cylinder 8 with two ends penetrating through the shell, the upper inner cylinder 8 is detachably connected in the upper end of the shell 7, one side of the shell 7 is detachably connected with a cleaning door 9, an upper spraying device is arranged in the top end of the shell 7, the upper inner cylinder 8 is detachably connected with a spiral baffle 10, a plurality of groups of filtering holes 11 are formed in the spiral baffle 10, two end pipe orifices are arranged above the water storage area 3 and are both located in a cooling coil 12 of the upper layer of the water storage area 3, a clear liquid circulating pipe with an electric valve is connected between one end pipe orifice of the cooling coil 12 and the upper spraying device, the bottom of the buffer tank 1 is connected with a water inlet 16 and a liquid discharging conveying pipe both with electric valves, and a water pumping device is arranged in the middle of the clear liquid circulating pipe and in the middle of the liquid discharging conveying pipe.

As can be seen from the above description, the exhaust device pumps the tail gas with dust raised during blanking in the dryer drum into the buffer tank 1 through the air inlet pipe 4, firstly, the tail gas exchanges heat with the air above the buffer tank 1 and the cooling coil 12 above the water storage area 3 through the buffer tank 1, the water vapor above the buffer tank 1 or the dust with larger volume in the tail gas collides with the cooling coil 12 to fall into the water storage area 3, so that the effect of primarily reducing dust and cooling the tail gas is achieved;

Then, through outlet duct 5, collection tower 2, spiral baffle 10 and filtration pore 11, after the tail gas after the dust fall cooling of the first time gets into collection tower 2 through outlet duct 5, utilize spiral baffle 10 to carry out many times and diversified blocking impact filtration to ascending tail gas, under the effect of the impact force of spiral baffle 10, part dust in the tail gas can strike or filter and drop to the bottom of collection tower 2 or be stained with on inclined baffle 20, play the effect of falling dust again to the tail gas; then, the electric valve of the liquid discharge conveying pipeline is closed firstly, then the electric valve on the liquid discharge pipe 29 is opened, then the water pumping device is started, under the suction action of the water suction pump 26, the supernatant on the upper layer of the water storage area 3 enters the upper spray device through the liquid discharge pipe and is used for spraying, dust falling and cooling the tail gas, meanwhile, dust on the spiral baffle 10 is flushed to the bottom in the collecting tower 2, the effect of reducing the dust of the tail gas again is achieved, the residual dust agglomeration with larger viscosity is blocked on the spiral baffle 10, the dust collecting effect and the tail gas cooling effect are prevented from being influenced due to the blocking of the upper spray device, and the effect of improving the overall tail gas treatment effect is achieved;

Then, through the liquid discharge pipe 6, as the collecting tower 2 is positioned above the buffer tank 1, under the action of gravity, dust sediment and water which are deposited along with spray water and fall to the bottom of the collecting tower 2 are discharged into the bottom of the water storage area 3 in the buffer tank 1 together through the liquid discharge pipe 6, so that the effect of automatically gathering the dust sediment twice together is achieved, the effect of influencing the collecting effect of the collecting tower 2 due to the fact that more dust sediment and liquid mixed slurry remain in the collecting tower 2 is avoided, and the effect of further improving the tail gas treatment effect and reducing the labor cost is realized without arranging manual conveying and transferring in addition; finally, in order to prevent agglomerated dust sediments from adhering and remaining at the bottom of the buffer tank 1 through the liquid discharge conveying pipe, the stirring device and the water inlet 16, the stirring device is started firstly, after the liquid and the dust sediments in the buffer tank 1 are uniformly stirred into slurry by the stirring device, the electric valve on the clear liquid circulating pipe is closed firstly, then the electric valve of the liquid discharge conveying pipe is opened, under the pumping action of the pumping device, the slurry mixed at the bottom of the buffer tank 1 is conveyed into an external immersion tank of the previous working procedure from the bottom of the buffer tank 1 through the liquid discharge conveying pipe, after the liquid discharge conveying pipe and the clear liquid circulating pipe electric valve are closed, the electric valve of the water inlet 16 can be opened, and the buffer tank 1 is supplemented with water, so that the functions of automatically conveying and recovering the dust material slurry and automatically supplementing water are achieved; the dust is guaranteed to be completely recovered and conveyed, and the dust is recovered by adopting fully-closed conveying without manual conveying and water supplementing, so that the pollution of secondary dust in conveying is avoided, and the effects of improving the tail gas treatment effect and reducing the labor cost are realized; through setting up clearance door 9, mutual shell 7 and the inner tube of detachable connection, be convenient for follow-up clearance and the maintenance to collecting tower 2 play the effect of reducing the clearance degree of difficulty in the collecting tower 2.

Further: the middle of the shell 7 is detachably connected with a lower inner cylinder 18 with two ends penetrating through, the inner side of the lower inner cylinder 18 is detachably connected with a plurality of inclined baffles 20 along the circumferential direction of the lower inner cylinder, the inclined baffles 20 are sequentially staggered from top to bottom, the inclined baffles 20 are obliquely downwards arranged towards the central axis direction close to the lower inner cylinder 18, a lower spray pipe 19 is arranged between the inclined baffles 20 and the spiral baffles 10, the lower spray pipe 19 is arranged in the shell 7, a plurality of lower spray heads 21 are arranged at the bottom of the lower spray pipe 19, and the lower spray pipe 19 is communicated with a clear liquid circulating pipe.

As can be seen from the above description, after the tail gas after primary dust fall and cooling enters the collecting tower 2 through the air outlet pipe 5, the ascending tail gas is impacted repeatedly and in multiple directions by the inclined baffles 20, and part of dust in the tail gas falls to the bottom of the collecting tower 2 or is adhered to the inclined baffles 20 under the impact force of the inclined baffles 20, so that the effect of secondary dust fall on the tail gas is achieved; after that, through down shower 19 for carry out primary spraying dust fall cooling to the tail gas, wash the dust on the inclined baffle 20 to the bottom in the collection tower 2 simultaneously, play the effect to tail gas tertiary dust fall and secondary cooling, block the great dust caking of remaining viscidity on inclined baffle 20, reduce the possibility that the shower head blockked up, greatly improved the collection effect to the dust and to the tail gas cooling, realized improving the effect of the treatment effect of whole tail gas.

Further: the upper spray device comprises a plurality of upper spray pipes 22 and a plurality of upper spray heads 23, wherein the upper spray pipes 22 are arranged in a cross shape, the upper spray heads 23 are arranged at the bottom of the upper spray pipes 22, and the top end of a clear liquid circulating pipe is connected with a filter 24; one end of the upper spray pipe 22 and one end of the lower spray pipe 19 are connected with valves 25 and are connected with a filter 24.

From the above description, the clear liquid on the upper layer of the water storage area 3 enters the filter 24 through the clear liquid circulation pipe to be filtered, solid impurities such as powder doped in the clear water are separated from water, filtered clear water enters the spray header through the upper spray pipe 22, the spray header blockage caused by the solid powder entering the spray pipe is avoided, the dust fall and cooling effects of the spray header on the tail gas are further ensured, and meanwhile, the tail gas treatment effect is ensured.

Further: the pumping device comprises a pumping pump 26 and a connecting pipe 27, the pumping pump 26 is arranged on the connecting pipe 27, the clear liquid circulating pipe comprises a main flow pipe 28 and a clear liquid pipe 29 with an electric valve, one end of the main flow pipe 28 is communicated with the clear liquid pipe 29 through the connecting pipe 27, the other end of the main flow pipe 28 is communicated with the upper spraying device, the other end of the clear liquid pipe 29 is communicated with one side of the middle of the buffer tank 1, the liquid discharge conveying pipe comprises an underflow calandria 30 and a transit calandria 31 which are all provided with the electric valve, and one end of the underflow calandria 30 is communicated with the transit calandria 31 through the connecting pipe 27.

As can be seen from the above description, when the slurry deposited in the buffer tank 1 needs to be discharged, the electric valve on the clear liquid pipe 29 is closed firstly, then the electric valves of the underflow drain pipe 30 and the transit drain pipe 31 are opened, under the suction action of the water suction pump 26, the slurry mixed by the stirring device at the bottom of the buffer tank 1 enters the connecting pipe 27 from the bottom of the buffer tank 1 through the underflow drain pipe 30, and then the slurry is conveyed into the external immersion tank of the previous process from the connecting pipe 27 through the transit drain pipe 31, so that the effect of automatically recovering, conveying and collecting the mixture of dust sediment and water can be realized, and the recovery and conveying of workers are not required to be additionally arranged, thereby greatly reducing the labor intensity and the labor cost; when spraying is needed, the electric valves of the underflow calandria 30 and the transit calandria 31 are closed firstly, the electric valve on the clear liquid pipe 29 is opened, under the suction action of the water suction pump 26, the clear liquid on the upper layer of the water storage area 3 flows into the connecting pipe 27 through the clear liquid pipe 29 firstly, and then enters the upper spraying device from the connecting pipe 27 through the main flow pipe 28.

Further: the stirring device comprises a rotating shaft 32, a group of upper stirring rods 33 and a group of lower stirring rods 34, a stirring motor 35 is arranged at the top end of the buffer tank 1, the driving end of the stirring motor 35 is connected with the top end of the rotating shaft 32, the upper stirring rods 33 and the lower stirring rods 34 are sequentially and respectively arranged at the lower end of the rotating shaft 32 from top to bottom, the bottom of the lower stirring rods 34 is connected with a scraping plate 36, the top of the lower stirring rods 34 is connected with a hammering plate 17 which is arranged in a wavy mode, and a plurality of smashing convex blocks 37 are arranged on the peripheral surface of the upper stirring rods 33.

As can be seen from the above description, when the slurry precipitated in the buffer tank 1 needs to be discharged, in order to avoid the agglomerated dust sediment from adhering to the bottom of the buffer tank 1, the stirring motor 35 is started before the liquid is discharged through the rotating shaft 32, the group of upper stirring rods 33 and the group of lower stirring rods 34, the stirring motor 35 drives the rotating shaft 32 to rotate, the rotating shaft 32 drives the upper stirring rods 33 and the lower stirring rods 34 to rotate, and after the liquid and the dust sediment in the buffer tank 1 are uniformly stirred into slurry, the liquid discharge and conveying pipe is opened, so as to improve the dust collection and recovery effect and reduce the cleaning difficulty of the buffer tank 1; through smashing lug 37, hammering board 17 and scraper blade 36, be used for breaking up the caking sediment of water storage area 3 upper end, mid portion respectively and be used for striking off the caking sediment that is stained with and attach in buffer tank 1 bottom, play the effect that further improves the dust and collect recovery effect and reduce buffer tank 1's clearance degree of difficulty.

Further: the cleaning opening 38 that upper inner tube 8 and lower inner tube 18 passed has been seted up to one side of shell 7, and one side of cleaning door 9 articulates in one side of cleaning opening 38, and cleaning door 9 inboard is connected with the silica gel foaming sealing strip 39 that is used for sealed cleaning opening 38, is connected with locking mechanism between the opposite side of cleaning door 9 and the cleaning opening 38.

As can be seen from the above description, by the silica gel foaming sealing strip 39, the silica gel foaming sealing strip 39 has the advantages of good elasticity, compression deformation resistance, aging resistance and the like, and plays a role in improving the tightness between the cleaning door 9 and the cleaning opening 38; when the upper inner cylinder 8, the lower inner cylinder 18, the spiral baffle 10 and the inclined baffle 20 need to be replaced or cleaned, the locking mechanism is only required to be opened firstly, then the cleaning door 9 is opened, and finally the corresponding upper inner cylinder 8 or lower inner cylinder 18 is taken out from the cleaning opening 38.

And (5) putting in: the bottom in the collecting tower 2 is provided with a slope 40, and the slope 40 is inclined downward toward the pipe orifice near the liquid discharge pipe 6.

As can be seen from the above description, by providing the slope portion 40, under the action of gravity, the dust material falling to the bottom of the collecting tower 2 along with the precipitation of the shower water is gathered into the liquid discharge pipe 6, so that the powder material is prevented from remaining to the bottom of the collecting tower 2, and the effects of further improving the powder collection rate and facilitating the cleaning of the collecting tower 2 are achieved.

Referring to fig. 1 to 7, embodiments provided by the present utility model are:

The tail gas treatment device of the dryer comprises a buffer tank 1 and a collecting tower 2, wherein the collecting tower 2 is positioned above the buffer tank 1, a water storage area 3 and a stirring device are arranged at the inner lower end of the buffer tank 1, and a liquid discharge pipe 6 with the bottom end extending into the inner bottom of the water storage area 3 is connected with the bottom of the collecting tower 2 and the top of the buffer tank 1; the bottom in the collecting tower 2 is provided with a slope 40, and the slope 40 is inclined downward toward the pipe orifice near the liquid discharge pipe 6.

The two sides of the top of the buffer tank 1 are respectively provided with an air inlet pipe 4 and an air outlet pipe 5 communicated with one side of the lower end of the collecting tower 2, a cooling coil 12 with pipe orifices at two ends both positioned at the upper layer in the water storage area 3 is arranged above the outside of the water storage area 3, a clear liquid circulating pipe with an electric valve is connected between the pipe orifice at one end of the cooling coil 12 and an upper spraying device, the bottom of the buffer tank 1 is connected with a water inlet 16 and a liquid discharge conveying pipe, the water inlet 16 and the liquid discharge conveying pipe are both provided with the electric valve, and a water pumping device is arranged between the clear liquid circulating pipe and the liquid discharge conveying pipe;

The pumping device comprises a pumping pump 26 and a connecting pipe 27, the pumping pump 26 is arranged on the connecting pipe 27, the clear liquid circulating pipe comprises a main flow pipe 28 and a clear liquid pipe 29 with an electric valve, one end of the main flow pipe 28 is communicated with the clear liquid pipe 29 through the connecting pipe 27, the other end of the main flow pipe 28 is communicated with the upper spraying device, the other end of the clear liquid pipe 29 is communicated with one side of the middle of the buffer tank 1, the liquid discharge conveying pipe comprises an underflow calandria 30 and a transit calandria 31 which are all provided with the electric valve, and one end of the underflow calandria 30 is communicated with the transit calandria 31 through the connecting pipe 27;

An air exhausting device (not shown in the figure, the whole text is the same) is arranged in the collecting tower 2, the collecting tower 2 comprises a shell 7 and an upper inner cylinder 8 with two penetrating ends, the upper inner cylinder 8 is detachably connected in the upper end of the shell 7, one side of the shell 7 is detachably connected with a cleaning door 9, an upper spraying device is arranged in the top end of the shell 7, the upper inner cylinder 8 is detachably connected with a spiral baffle 10, a plurality of groups of filtering holes 11 are formed in the spiral baffle 10, a lower inner cylinder 18 is detachably connected in the middle of the shell 7, two ends of the lower inner cylinder 18 penetrate, a plurality of inclined baffles 20 are detachably connected on the inner side of the lower inner cylinder 18 along the circumferential direction of the lower inner cylinder, the inclined baffles 20 are sequentially staggered from top to bottom, the inclined baffles 20 are obliquely downwards arranged towards the central axis direction close to the lower inner cylinder 18, a lower spraying pipe 19 is arranged between the inclined baffles 20 and the spiral baffle 10, the lower spraying pipe 19 is arranged in the shell 7, a plurality of lower spraying heads 21 are arranged at the bottom of the lower spraying pipe 19, and the lower spraying pipe 19 is communicated with clear liquid; a cleaning opening 38 through which the upper inner cylinder 8 and the lower inner cylinder 18 pass is formed in one side of the shell 7, one side of the cleaning door 9 is hinged to one side of the cleaning opening 38, a silica gel foaming sealing strip 39 for sealing the cleaning opening 38 is connected to the inner side of the cleaning door 9, and a locking mechanism (not shown in the figure and the whole text is the same) is connected between the other side of the cleaning door 9 and the cleaning opening 38;

the upper spray device comprises a plurality of upper spray pipes 22 and a plurality of upper spray heads 23, wherein the upper spray pipes 22 are arranged in a cross shape, the upper spray heads 23 are arranged at the bottom of the upper spray pipes 22, and the top end of a clear liquid circulating pipe is connected with a filter 24; one end of the upper spray pipe 22 and one end of the lower spray pipe 19 are connected with valves 25 and are connected with a filter 24.

The stirring device comprises a rotating shaft 32, a group of upper stirring rods 33 and a group of lower stirring rods 34, a stirring motor 35 is arranged at the top end of the buffer tank 1, the driving end of the stirring motor 35 is connected with the top end of the rotating shaft 32, the upper stirring rods 33 and the lower stirring rods 34 are sequentially and respectively arranged at the lower end of the rotating shaft 32 from top to bottom, the bottom of the lower stirring rods 34 is connected with a scraping plate 36, the top of the lower stirring rods 34 is connected with a hammering plate 17 which is arranged in a wavy mode, and a plurality of smashing convex blocks 37 are arranged on the peripheral surface of the upper stirring rods 33.

In conclusion, compared with the prior art, the utility model has the advantages of good tail gas treatment effect, convenient cleaning and low labor cost; the buffer tank 1, the water storage area 3, the cooling coil 12, the clear liquid circulating pipe and the water pumping device play roles in preliminary dust fall and temperature reduction of tail gas; the exhaust gas is subjected to dust fall again through the air outlet pipe 5, the collecting tower 2, the spiral baffle plate 10 and the filtering holes 11; through the clear liquid circulation pipe, the water pumping device and the upper spraying device, the clear liquid pumped to the upper layer of the water storage area 3 in the upper spraying device is used for spraying, dust falling and cooling the tail gas, and meanwhile, dust on the spiral baffle 10 is flushed to the bottom in the collecting tower 2, so that the effect of re-dust falling and cooling the tail gas is achieved; through the liquid discharge pipe 6, the dust sediment collected twice is automatically gathered together; through the liquid discharge conveying pipe, the water pumping device and the stirring device, the liquid and dust sediments in the buffer tank 1 are uniformly stirred to form slurry, and the stirred slurry is pumped and conveyed into an external immersion tank of the previous process through the liquid discharge conveying pipe, so that the slurry for automatically conveying and recycling dust materials is achieved; through the water inlet 16, an electric valve of the water inlet 16 is opened to play a role in automatic water supplementing; through setting up clearance door 9, mutual shell 7 and the inner tube of detachable connection, play the effect of reducing the clearance degree of difficulty in the collection tower 2.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (7)

1. The utility model provides a tail gas processing apparatus of desiccator which characterized in that: the device comprises a buffer tank and a collecting tower positioned above the buffer tank, wherein a water storage area and a stirring device are arranged at the inner lower end of the buffer tank, an air inlet pipe and an air outlet pipe communicated with one side of the lower end of the collecting tower are respectively arranged at two sides of the top of the buffer tank, an air exhausting device is arranged in the collecting tower, and the bottom of the collecting tower and the top of the buffer tank are connected with a liquid discharge pipe with the bottom end extending into the inner bottom of the water storage area; the collecting tower comprises a shell and an upper inner cylinder with two ends penetrating through, the upper inner cylinder is detachably connected to the upper end of the shell, a cleaning door is detachably connected to one side of the shell, an upper spraying device is arranged in the top end of the shell, a spiral baffle is detachably connected to the upper inner cylinder, a plurality of groups of filtering holes are formed in the spiral baffle, two ends of pipe orifices are arranged above the water storage area and are all located on the upper layer of the water storage area, a clear liquid circulating pipe with an electric valve is connected between one end of the cooling pipe and the upper spraying device, a water inlet and a liquid discharging conveying pipe with the electric valve are connected to the bottom of the buffer tank, and a water pumping device is arranged in the middle of the clear liquid circulating pipe and in the middle of the liquid discharging conveying pipe.

2. The exhaust gas treatment device of a dryer according to claim 1, wherein: the middle of shell is interior can be dismantled and be connected with the lower inner tube that both ends run through, lower inner tube inboard can be dismantled along its circumference and be connected with a plurality of inclined baffle, be the mutual crisscross setting in proper order between the inclined baffle from the top down, inclined baffle towards being close to lower inner tube's axis direction slope sets up downwards, inclined baffle with be equipped with down the shower between the spiral baffle, down the shower is installed in the shell, a plurality of lower shower head is installed to the bottom of shower down, down the shower with clear liquid circulating pipe intercommunication.

3. The exhaust gas treatment device of a dryer according to claim 2, wherein: the upper spraying device comprises a plurality of upper spraying pipes and a plurality of upper spraying heads, wherein the upper spraying pipes are arranged in a cross shape, the upper spraying heads are arranged at the bottom of the upper spraying pipes, and the top end of the clear liquid circulating pipe is connected with a filter; and one end of the upper spray pipe and one end of the lower spray pipe are connected with valves and are connected with the filter.

4. The exhaust gas treatment device of a dryer according to claim 1, wherein: the water pumping device comprises a water pumping pump and a connecting pipe, the water pumping pump is arranged on the connecting pipe, the clear liquid circulating pipe comprises a main flow pipe and a clear liquid pipe with an electric valve, one end of the main flow pipe is communicated with the clear liquid pipe through the connecting pipe, the other end of the main flow pipe is communicated with the upper spraying device, the other end of the clear liquid pipe is communicated with one side of the middle of the buffer tank, the liquid draining conveying pipe comprises an underflow calandria and a transit calandria, both of which are provided with the electric valve, and one end of the underflow calandria is communicated with the transit calandria through the connecting pipe.

5. The exhaust gas treatment device of a dryer according to claim 1, wherein: stirring device includes axis of rotation, a set of puddler and a set of puddler down, agitator motor is installed to the buffer tank top, agitator motor's drive end with the axis of rotation top is connected, go up the puddler with down the puddler from the top down installs respectively in proper order the lower extreme of axis of rotation, the bottom of puddler is connected with the scraper blade down, the top of puddler is connected with the hammering board that is the wave setting down, the lug is smashed to a plurality of is installed to the outer peripheral face of last puddler.

6. The exhaust gas treatment device of a dryer according to claim 2, wherein: the cleaning device comprises a shell, an upper inner cylinder, a lower inner cylinder, a cleaning opening, a cleaning door and a locking mechanism, wherein the cleaning opening is formed in one side of the shell, the upper inner cylinder and the lower inner cylinder penetrate through the cleaning opening, one side of the cleaning door is hinged to one side of the cleaning opening, a silica gel foaming sealing strip used for sealing the cleaning opening is connected to the inner side of the cleaning door, and the locking mechanism is connected between the other side of the cleaning door and the cleaning opening.

7. The exhaust gas treatment device of a dryer according to claim 1, wherein: the bottom in the collecting tower is provided with a slope part which is obliquely downwards arranged towards the pipe orifice close to the liquid discharge pipe.