CN211245992U

CN211245992U - Exhaust treatment tool for traditional Chinese medicinal material frying device

Info

Publication number: CN211245992U
Application number: CN201922117430.2U
Authority: CN
Inventors: 叶克兵
Original assignee: Chengdu Qilong Herbal Pieces Co ltd
Current assignee: Chengdu Qilong Herbal Pieces Co ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-08-14
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a system exhaust-treatment frock is fried to chinese-medicinal material for device, including frying the system closing cap, fry the system closing cap and be equipped with the feeding piece, still include: the air outlet cylinder is arranged on the frying sealing cover and used for discharging waste gas during frying of the frying device; the collecting unit is arranged at the lower end of the air outlet cylinder and is used for shunting and collecting the waste gas generated by the frying device during frying; and the processing and cooling unit is arranged on the collecting unit and is used for processing the waste gas during frying and cooling the waste gas. The utility model discloses reduce the harmful substance that chinese-medicinal material fried system in-process flue gas, conveniently clear up, reduce the influence of flue gas to operating personnel health, have stronger practicality.

Description

Exhaust treatment tool for traditional Chinese medicinal material frying device

Technical Field

The utility model relates to a relevant technical field of medicine preparation especially relates to a system is fried to chinese-medicinal material exhaust-treatment frock for device.

Background

During the production process of the traditional Chinese medicine, various different processing procedures are required according to the drug effect and pharmacological components of the traditional Chinese medicine, wherein the stir-frying is a common processing mode in the traditional Chinese medicine processing, but the traditional Chinese medicine processing is mostly finished by adopting mechanical equipment along with the influence of the industrialization process, correspondingly, when the existing mechanical equipment is used, the yield of the traditional Chinese medicinal material processing is increased, and other problems are introduced, such as smoke is inevitably generated in the traditional Chinese medicinal material frying process, the smoke discharged by stir-frying the Chinese medicinal materials is mostly harmful substances, a large amount of the harmful smoke can influence the health of operators, of course, the existing Chinese medicinal plant processing workshop uses a large-scale flue gas purification system to reduce the harm, however, the system of the purification system is huge, and accordingly, the production cost of the traditional Chinese medicinal materials is increased.

Disclosure of Invention

The utility model provides a chinese-medicinal material is fried and is made device and use exhaust treatment frock to solve the not enough of above-mentioned prior art, reduce the chinese-medicinal material and fry the harmful substance of system in-process flue gas, conveniently clear up, reduce the influence of flue gas to operating personnel health, have stronger practicality.

In order to realize the purpose of the utility model, the following technologies are adopted:

the utility model provides a system exhaust-treatment frock is fried to chinese-medicinal material for device, is equipped with the feeding piece including frying the closing cap, fries the closing cap, still includes:

the air outlet cylinder is arranged on the frying sealing cover and used for discharging waste gas during frying of the frying device;

the collecting unit is arranged at the lower end of the air outlet cylinder and is used for shunting and collecting the waste gas generated by the frying device during frying;

and the processing and cooling unit is arranged on the collecting unit and is used for processing the waste gas during frying and cooling the waste gas.

Furthermore, a discharge mechanism is arranged in the air outlet cylinder and used for discharging waste gas;

the discharging mechanism comprises a rotating shaft, the upper end of the rotating shaft is provided with a bearing, the bearing is assembled in the air outlet cylinder, the lower end of the bearing is provided with a plugging disc, the plugging disc is arranged in the air outlet cylinder, the lower end of the plugging disc is provided with rotating blades, the rotating blades are assembled on the rotating shaft, and the rotating blades are positioned in the air outlet cylinder;

a plurality of air outlet holes are formed on the wall of the air outlet cylinder;

the air outlet holes are arranged on the air outlet cylinder in a circumferential array;

the rotating blade is positioned at the air outlet hole.

Further, the lower end of the rotating blade is of an arc-shaped structure.

Furthermore, the collecting unit comprises a lower ring arranged at the lower end of the air outlet cylinder, an upper ring is arranged at the upper end of the lower ring, the upper ring is arranged at the upper end of the air outlet cylinder, an assembly ring is arranged in the upper ring in an upward extending manner, an assembly ring groove is formed in an opening at the outer side of the assembly ring, a plurality of assembly pins are assembled in the assembly ring groove, outer plates are arranged at the outer side ends of the assembly pins, lower clamping plates are arranged at the lower ends of the outer plates, the lower clamping plates are all positioned below the lower ring, positioning blocks are arranged on the inner walls of the outer plates, a plurality of collecting;

the number of the collecting hoppers is equal to that of the positioning blocks;

the inner side end and the upper end of the collecting hopper are both opened, when the collecting hopper collects waste gas, the inner side end of the collecting hopper is communicated with the gas outlet hole, the upper end of the collecting hopper is communicated with the gas outlet pipe, and the outer side end of the collecting hopper is locked by the positioning block.

The treatment cooling unit comprises a fixed disc which is installed and communicated with the air outlet pipe, a first vertical ring plate is installed on the fixed disc in an upward extending mode, a first transverse ring plate is arranged at the upper end of the first vertical ring plate and located right above the air outlet pipe, a second vertical ring plate is arranged at the inner side end of the first transverse ring plate, the lower end of the second vertical ring plate is installed on the fixed disc, a second transverse ring plate is arranged at the upper end of the second vertical ring plate and located right above the first transverse ring plate, a third vertical ring plate is arranged on the first transverse ring plate, a third transverse ring plate is arranged at the upper end of the third vertical ring plate and located right above the second transverse ring plate, a fourth vertical ring plate is arranged at the inner side end of the third transverse ring plate, a plurality of air outlet holes are formed in a circumferential array mode at the lower end of the fourth vertical ring plate and installed on the fixed disc, and a cooling pipe is arranged between the fourth vertical ring plate and the second vertical ring plate;

a gap is formed between the first transverse ring plate and the second vertical ring plate;

and a gap is reserved between the second transverse ring plate and the third vertical ring plate.

Furthermore, a plurality of first inclined ring plates are formed in the first transverse ring plate in a downward inclined and extending mode, and primary filter substances are filled in a cavity formed by the first transverse ring plate, the first vertical ring plate and the second vertical ring plate.

Furthermore, a plurality of second inclined ring plates are formed in the second transverse ring plate in a downward inclined and extending mode, and secondary filter substances are filled in a cavity formed by the second vertical ring plate, the second transverse ring plate and the third vertical ring plate.

Furthermore, the first-stage filtrate and the second-stage filtrate are both made of activated carbon.

Furthermore, absorption cotton is arranged in a cavity formed by the fourth vertical ring plate, the second vertical ring plate, the third transverse ring plate and the third vertical ring plate.

Further, the cooling pipe is in a spiral structure.

The technical scheme has the advantages that:

1. the gas outlet cylinder is arranged on the frying sealing cover and used for collecting and discharging smoke when the frying device is used for frying, wherein in order that the smoke does not influence a bearing arranged at the upper end of the gas outlet cylinder, a sealing disc is arranged at the lower end of the bearing, a corresponding gas outlet hole is arranged below the sealing disc, the smoke is discharged from the gas outlet hole, meanwhile, a rotating blade is arranged in the gas outlet hole in order to facilitate the smoke to flow out, and meanwhile, the lower end of the rotating blade is arranged to be of an arc-shaped structure in order to improve the air flow circulation;

2. the collecting unit is arranged at the lower end of the gas outlet cylinder and used for shunting the waste gas and preliminarily settling larger particles in the flue gas so as to prevent the flue gas from blocking the gas outlet pipe, wherein, the main part of the collection and the diversion is a collection hopper, the collection hoppers are arranged at the air outlet holes in a one-to-one correspondence manner in the collection process, meanwhile, in order to prevent the flue gas from escaping from the installation position of the gas outlet hopper, a positioning block is arranged, the gas outlet hopper can be stably positioned between the upper ring and the lower ring in a sealing way under the pushing action of the positioning block when the flue gas is collected, the design mode can also facilitate the disassembly of the collecting hopper, when the collecting hopper works for a period of time, the collecting hopper can be disassembled for cleaning and then reused after cleaning, the assembly ring arranged at the upper end of the upper ring can conveniently move the positioning block, so that the collection hopper can be conveniently locked and unlocked;

3. a processing and cooling unit arranged on the gas outlet pipe, wherein a cavity formed by the first transverse ring plate, the first vertical ring plate and the second vertical ring plate is filled with a primary filter, and a cavity formed by the second vertical ring plate, the second transverse ring plate and the third vertical ring plate is filled with a secondary filter for purifying the smoke, a spiral cooling pipe is arranged for improving the sedimentation effect, and cooling liquid is filled in the cooling pipe, so that the temperature of the smoke can be reduced, lipid compounds are condensed on the secondary filter due to the reduction of the temperature, the filtering of harmful substances in the smoke is improved, meanwhile, a plurality of first inclined ring plates and second inclined ring plates are arranged for improving the absorption rate of the harmful substances in the smoke, the contact time of the smoke with the primary filter and the secondary filter is prolonged, and simultaneously, in order to further improve the effect, absorption cotton is arranged in a cavity formed by the fourth vertical ring plate, the second vertical ring plate, the third transverse ring plate and the third vertical ring plate, so that on one hand, gas can be smoothly discharged, and on the other hand, smoke can be treated again;

4. the utility model discloses reduce the harmful substance that chinese-medicinal material fried system in-process flue gas, conveniently clear up, reduce the influence of flue gas to operating personnel health, have stronger practicality.

Drawings

Fig. 1 shows a first three-dimensional structure of the present invention.

Fig. 2 shows a second three-dimensional structure of the present invention.

Fig. 3 shows a partial cross-sectional view.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-3, an exhaust treatment frock for chinese-medicinal material stir-fry system device includes stir-fry system closing cap 1, and stir-fry system closing cap 1 is equipped with feeding member 10, still includes: the gas outlet cylinder 11 is arranged on the frying sealing cover 1 and used for discharging waste gas generated during frying of the frying device, the collecting unit 2 is arranged at the lower end of the gas outlet cylinder 11 and used for shunting and collecting the waste gas generated during frying of the frying device, the cooling unit 3 is treated and arranged on the collecting unit 2 and used for treating the waste gas generated during frying of the frying device and cooling the waste gas.

Be equipped with discharge mechanism 4 in the play chimney 11, discharge mechanism 4 is used for the discharge of waste gas, discharge mechanism 4, including pivot 40, pivot 40 upper end is equipped with bearing 43, bearing 43 assembles in play chimney 11, bearing 43 lower extreme is equipped with shutoff dish 42, shutoff dish 42 is located in play chimney 11, shutoff dish 42 lower extreme is equipped with rotor blade 41, rotor blade 41 assembles in pivot 40, rotor blade 41 is located

play chimney

11, 11 wall of play chimney is formed with a plurality of gas outlet 110, go out the gas outlet 110 and locate play chimney 11 with being the circumference array, rotor blade 41 is located gas outlet 110, rotor blade 41 lower extreme is the arc structure. The air outlet cylinder 11 is arranged on the frying sealing cover 1 and used for collecting and discharging smoke when the frying device is used for frying, wherein in order that the smoke does not influence a bearing 43 arranged at the upper end of the air outlet cylinder 11, a sealing disc 42 is arranged at the lower end of the bearing 43, a corresponding air outlet hole 110 is arranged below the sealing disc 42, the smoke is discharged from the air outlet hole 110, meanwhile, a rotating blade 41 is arranged in the air outlet hole 110 in order to facilitate the smoke, and meanwhile, the lower end of the rotating blade 41 is arranged to be of an arc-shaped structure in order to improve the circulation of air flow.

The collecting unit 2 comprises a lower ring 20 arranged at the lower end of the air outlet cylinder 11, an upper ring 21 is arranged at the upper end of the lower ring 20, the upper ring 21 is arranged at the upper end of the air outlet cylinder 11, an assembling ring 22 is arranged on the upper ring 21 in an upward extending manner, an assembling ring groove 23 is formed by opening the outer side of the assembling ring 22, a plurality of assembling pins 24 are assembled in the assembling ring groove 23, outer plates 25 are arranged at the outer side ends of the assembling pins 24, lower clamping plates 26 are arranged at the lower ends of the outer plates 25, the lower clamping plates 26 are all positioned below the lower ring 20, positioning blocks 27 are arranged on the inner wall of the outer plates 25, a plurality of collecting hoppers 28 are arranged between the lower ring 20 and the upper ring 21, the upper ring 21 is communicated with air outlet pipes 29 in a circumferential array manner, the number of the collecting hoppers 28 is equal to the number of the positioning blocks 27, the inner side ends and the, and the outer ends are locked by positioning blocks 27. The collecting unit 2 is arranged at the lower end of the air outlet cylinder 11 and is used for shunting the waste gas and preliminarily settling larger particles in the flue gas so as to prevent the flue gas from blocking the air outlet pipe 29, wherein, the main part of the collection and the diversion is the collection bucket 28, the collection buckets 28 are correspondingly arranged at the air outlet holes 110 one by one during the collection process, and in order to prevent the smoke from escaping from the installation position of the air outlet hopper 28, therefore, a positioning block 27 is provided, the gas outlet hopper 28 can be stably and hermetically positioned between the upper ring 21 and the lower ring 20 when the gas is collected through the pushing action of the positioning block 27, and the design mode can also facilitate the disassembly of the collecting hopper 28, after the collection hopper 28 has been in operation for a period of time, it can be removed for cleaning, cleaned and reused, wherein the mounting ring 22 provided at the upper end of the upper ring 21 facilitates the movement of the positioning block 27 and thus the locking and unlocking of the collecting bucket 28.

The processing and cooling unit 3 comprises a fixed disk 30 which is arranged and communicated with an air outlet pipe 29, a first vertical ring plate 31 is arranged on the fixed disk 30 in an upward extending manner, a first transverse ring plate 32 is arranged at the upper end of the first vertical ring plate 31, the first transverse ring plate 32 is positioned right above the air outlet pipe 29, a second vertical ring plate 34 is arranged at the inner side end of the first transverse ring plate 32, the lower end of the second vertical ring plate 34 is arranged on the fixed disk 30, a second transverse ring plate 35 is arranged at the upper end of the second vertical ring plate 34, the second transverse ring plate 35 is positioned right above the first transverse ring plate 32, a third vertical ring plate 37 is arranged on the first transverse ring plate 32, a plurality of air outlet holes 380 are formed at the lower end of the fourth vertical ring plate 38 in a circumferential array manner, a plurality of air outlet holes 380 are arranged at the lower end of the fourth vertical ring plate 30, and cooling pipes 39 are arranged between the fourth vertical ring plate 38 and the second vertical ring plate 34, a gap exists between the first transverse ring plate 32 and the second vertical ring plate 34, a gap exists between the second transverse ring plate 35 and the third vertical ring plate 37, a plurality of first inclined ring plates 33 are formed in the first transverse ring plate 32 in a downward inclined and extending mode, primary filter materials are filled in a cavity formed by the first transverse ring plate 32, the first vertical ring plate 31 and the second vertical ring plate 34, a plurality of second inclined ring plates 36 are formed in the second transverse ring plate 35 in a downward inclined and extending mode, secondary filter materials are filled in a cavity formed by the second vertical ring plate 34, the second transverse ring plate 35 and the third vertical ring plate 37, the primary filter materials and the secondary filter materials are all made of activated carbon, and absorption cotton is arranged in a cavity formed by the fourth vertical ring plate 38, the second vertical ring plate 34, the third transverse ring plate 370 and the third vertical ring plate 37. The cooling tube 39 has a helical structure. The processing and cooling unit 3 is arranged in the air outlet pipe 29, a cavity formed by the first transverse ring plate 32, the first vertical ring plate 31 and the second vertical ring plate 34 is filled with a primary filter, a cavity formed by the second vertical ring plate 34, the second transverse ring plate 35 and the third vertical ring plate 37 is filled with a secondary filter for purifying the smoke, a spiral cooling pipe 39 is arranged for improving the sedimentation effect, and the cooling pipe 39 is filled with cooling liquid, so that the temperature of the smoke can be reduced, lipid compounds are condensed on the secondary filter due to the reduction of the temperature, the filtering of harmful substances in the smoke is improved, meanwhile, in order to improve the absorption rate of the harmful substances in the smoke, a plurality of first inclined ring plates 33 and second inclined ring plates 36 are arranged, and the contact time of the smoke with the primary filter and the secondary filter is prolonged, meanwhile, in order to further improve the effect, absorption cotton is arranged in a cavity formed by the fourth vertical ring plate 38, the second vertical ring plate 34, the third transverse ring plate 370 and the third vertical ring plate 37, so that on one hand, gas can be smoothly discharged, and on the other hand, smoke can be treated again.

The specific implementation and principle are as follows:

in the embodiment, the traditional Chinese medicinal materials are fried, the traditional Chinese medicinal materials are various in types and are required to be fried, the embodiment is implemented on the basis of treating smoke, and smoke treatment is not performed on a certain traditional Chinese medicinal material, so that the harmful substances in the smoke cannot be specifically listed, and the embodiment is only a universal implementation mode.

During the frying process of the traditional Chinese medicinal materials, smoke enters the frying sealing cover 1 from the frying device, and finally moves upwards from the lower end of the frying sealing cover 1 due to the air pressure, at the moment, the rotating blades 41 continuously rotate to efficiently discharge the smoke from the air outlet hole 110 into the collecting hopper 28, as the air outlet pipe 29 is arranged at the upper end of the collecting hopper 28, some smoke dust with larger granularity stays on the inner wall of the collecting hopper 28 or the collecting hopper 28, the collecting hopper 28 is taken down and cleaned after being used for a period of time, the positioning block 27 is rotated after being cleaned, the collecting hopper 28 is fixed at the air outlet hole 110, the collection processing of the smoke gas is continued, the smoke gas enters the air outlet pipe 29 after passing through the collecting hopper 28 and finally moves to a cavity formed by the first transverse annular plate 32, the first vertical annular plate 31 and the second vertical annular plate 34 and is filled with a primary filter, and is primarily absorbed and purified by the primary filter, and the flue gas enters a cavity formed by the second vertical ring plate 34, the second transverse ring plate 35 and the third vertical ring plate 37 and is filled with secondary filter, secondary flue gas purification treatment is carried out, the treated flue gas is diffused into a cavity formed by the fourth vertical ring plate 38, the second vertical ring plate 34, the third transverse ring plate 370 and the third vertical ring plate 37, absorption cotton is arranged in the cavity, at the moment, the cooling pipe 39 cools the input flue gas, most substances in the cooled flue gas are settled into the absorption cotton, and finally the substances are escaped from the outlet gas 380.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a system exhaust-treatment frock is fried to chinese-medicinal material for device, is equipped with feeding piece (10) including frying system closing cap (1), its characterized in that still includes:

the air outlet cylinder (11) is arranged on the frying sealing cover (1) and is used for discharging waste gas during frying of the frying device;

the collecting unit (2) is arranged at the lower end of the air outlet cylinder (11) and is used for shunting and collecting the waste gas generated by the frying device during frying;

and the processing and cooling unit (3) is arranged on the collecting unit (2) and is used for processing the waste gas and cooling the waste gas during frying and stir-frying of the stir-fried pork.

2. The exhaust treatment tool for the traditional Chinese medicine material frying device according to claim 1, wherein a discharge mechanism (4) is arranged in the air outlet cylinder (11), and the discharge mechanism (4) is used for discharging waste gas;

the discharge mechanism (4) comprises a rotating shaft (40), a bearing (43) is assembled at the upper end of the rotating shaft (40), the bearing (43) is assembled in the air outlet cylinder (11), a blocking disc (42) is arranged at the lower end of the bearing (43), the blocking disc (42) is arranged in the air outlet cylinder (11), rotating blades (41) are arranged at the lower end of the blocking disc (42), the rotating blades (41) are assembled on the rotating shaft (40), and the rotating blades (41) are positioned in the air outlet cylinder (11);

a plurality of air outlet holes (110) are formed on the wall of the air outlet cylinder (11);

the air outlet holes (110) are arranged on the air outlet cylinder (11) in a circumferential array;

the rotating blade (41) is positioned at the air outlet hole (110).

3. The exhaust treatment tool for the frying device of traditional Chinese medicinal materials as claimed in claim 2, wherein the lower end of the rotating blade (41) is in an arc structure.

4. The exhaust treatment tool for the traditional Chinese medicine frying device according to claim 2, wherein the collecting unit (2) comprises a lower ring (20) arranged at the lower end of the air outlet cylinder (11), an upper ring (21) is arranged at the upper end of the lower ring (20), the upper ring (21) is arranged at the upper end of the air outlet cylinder (11), an assembly ring (22) is arranged on the upper ring (21) in an upward extending manner, an assembly ring groove (23) is formed in an opening at the outer side of the assembly ring (22), a plurality of assembly pins (24) are assembled in the assembly ring groove (23), outer plates (25) are respectively arranged at the outer side ends of the assembly pins (24), lower clamping plates (26) are respectively arranged at the lower ends of the outer plates (25), the lower clamping plates (26) are respectively positioned below the lower ring (20), positioning blocks (27) are respectively arranged on the inner wall of the outer plates (25), a plurality of collecting hoppers (28) are arranged between the lower ring (20) and;

the number of the collecting hoppers (28) is equal to that of the positioning blocks (27);

the inner side end and the upper end of the collecting hopper (28) are both opened, when the collecting hopper (28) collects waste gas, the inner side end of the collecting hopper (28) is communicated with the gas outlet hole (110), the upper end of the collecting hopper (28) is communicated with the gas outlet pipe (29), and the outer side end is locked through the positioning block (27).

5. The exhaust treatment tool for the traditional Chinese medicine frying device according to claim 4, wherein the treatment cooling unit (3) comprises a fixed disk (30) which is installed and communicated with the air outlet pipe (29), the fixed disk (30) is provided with a first vertical annular plate (31) in an upward extending manner, the upper end of the first vertical annular plate (31) is provided with a first transverse annular plate (32), the first transverse annular plate (32) is positioned right above the air outlet pipe (29), the inner side end of the first transverse annular plate (32) is provided with a second vertical annular plate (34), the lower end of the second vertical annular plate (34) is installed on the fixed disk (30), the upper end of the second vertical annular plate (34) is provided with a second transverse annular plate (35), the second transverse annular plate (35) is positioned right above the first transverse annular plate (32), the first transverse annular plate (32) is provided with a third vertical annular plate (37), the upper end of the third vertical annular plate (37) is provided with a third transverse annular plate (370), and the third transverse annular plate (370) is positioned right above the second transverse annular plate (35), a fourth vertical ring plate (38) is arranged at the inner side end of the third transverse ring plate (370), a plurality of air outlet holes (380) are formed at the lower end of the fourth vertical ring plate (38) in a circumferential array manner, the lower end of the fourth vertical ring plate (38) is installed on the fixed disc (30), and a cooling pipe (39) is arranged between the fourth vertical ring plate (38) and the second vertical ring plate (34);

a gap exists between the first transverse ring plate (32) and the second vertical ring plate (34);

a gap exists between the second transverse ring plate (35) and the third vertical ring plate (37).

6. The exhaust treatment tool for the traditional Chinese medicine material frying device according to claim 5, wherein a plurality of first inclined ring plates (33) are formed in the first transverse ring plate (32) in a downward inclined and extending manner, and primary filter materials are filled in a cavity formed by the first transverse ring plate (32), the first vertical ring plate (31) and the second vertical ring plate (34).

7. The exhaust treatment tool for the traditional Chinese medicine material frying device according to claim 6, wherein a plurality of second inclined ring plates (36) are formed in the second transverse ring plate (35) in a downward inclined and extending manner, and secondary filter materials are filled in a cavity formed by the second vertical ring plate (34), the second transverse ring plate (35) and the third vertical ring plate (37).

8. The exhaust treatment tool for the traditional Chinese medicine material frying device according to claim 7, wherein the primary filter and the secondary filter are both made of activated carbon.

9. The exhaust treatment tool for the traditional Chinese medicine material frying device according to claim 6, wherein absorption cotton is arranged in a cavity formed by the fourth vertical ring plate (38), the second vertical ring plate (34), the third transverse ring plate (370) and the third vertical ring plate (37).

10. The exhaust treatment tool for the traditional Chinese medicine material frying device according to claim 6, wherein the cooling pipe (39) is of a spiral structure.