Bionic drainage and heat insulation hot ice melting layer drilling tool

Abstract

A bionic drainage and heat insulation hot melting ice layer drilling tool belongs to the technical field of ice layer drilling, and is characterized in that a front hot melting drill bit, a shell, an end cover and a rear hot melting drill bit are arranged front and back and fixedly connected, a bionic honeycomb interlayer, an air interlayer and the shell are arranged inside and outside, and the front and rear ends of the air interlayer and the bionic honeycomb interlayer are fixedly connected to the shell and the end cover respectively; the bionic filtering device, the scientific load cabin and the cable cabin are arranged front and back and located in a space formed by the end cover, the bionic honeycomb interlayer, the shell and the front hot melting drill bit, and the filter element box is fixedly connected to a center hole of the bionic filtering device; in the ice layer drilling process, the front hot melt drill bit with the spiral grooves and the small holes can achieve drilling, meanwhile, liquid can be guided into the drilling tool, and then a gas-liquid mixture with few solid particles is obtained through multiple times of filtering for scientific analysis; the designed bionic honeycomb interlayer and the multiple air interlayers with the partition plates have the good heat insulation effect, the working environment of components in the scientific load cabin can be guaranteed, and meanwhile the strength of a drilling tool can be guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ice layer drilling, and particularly relates to a bionic drainage and heat insulation hot-melt ice layer drilling tool. BACKGROUND

[0002] Sampling and analyzing of the water and gas in the Antarctic subglacial lake play an important role in revealing the formation mechanism, evolution law and influence mechanism on the Antarctic ice sheet material balance of the subglacial lake. The hot-melt drilling method is a method of drilling and reaming by melting ice into water through the high-temperature surface of a drilling tool by using the low melting point of the ice layer. The liquid is introduced into a scientific payload cabin for analysis by the joint action of a vacuum pump, a drainage pipe and a sampling cylinder, and the sampling efficiency is low. During the hot-melt drilling process, the temperature environment around the drilling tool is complex and changeable due to the high-temperature drill bit and the side wall, which interferes with the normal work of the components in the scientific payload cabin and affects the detection accuracy.

[0003] On the one hand, the melted liquid flows through the designed spiral groove and small hole, enters the scientific payload cabin for analysis through the vacuum pump and the bionic filter device, and is filtered while improving the drainage efficiency; on the other hand, in view of the influence of the complex and changeable temperature environment on the detection work, the air interlayer, the bionic honeycomb interlayer and the metal material with low thermal conductivity are used to reduce the influence of temperature fluctuation on the detection work in the scientific payload cabin. SUMMARY

[0004] In view of the problem that the existing hot-melt drill bit has less consideration for the heat insulation of the drilling tool during the ice melting and drainage module, the purpose of the application is to provide a bionic drainage and heat insulation hot-melt ice layer drilling tool, which realizes heat insulation by guiding the liquid flow and setting the interlayer to improve the detection accuracy of the components in the scientific payload cabin.

[0005] The drill bit is designed as a cone, spiral grooves are processed on the surface to increase the contact area with the ice surface, holes are opened on the spiral groove surface, the liquid is introduced into the inside of the drilling tool through the holes on the spiral groove by the vacuum pump during the ice melting work, and the liquid is introduced into the scientific payload cabin for analysis by the designed bionic filter structure for secondary filtration. The drill body is composed of an outer wall, a bionic honeycomb interlayer and an air interlayer with multiple cavities and partitions in the inside, which not only guarantees the structural strength but also has good heat insulation effect to guarantee the good working environment of the scientific payload cabin.

[0006] This invention relates to a biomimetic drainage and heat insulation hot-melting ice layer drill, comprising an end cap A, an outer shell B, an air interlayer C, a biomimetic honeycomb interlayer D, a biomimetic filter device E, a front hot-melting drill bit F, a rear hot-melting drill bit 1, bolt group I 2, a cable compartment 3, a scientific payload compartment 4, bolt group II 5, a key 6, and a filter cartridge 7. The rear hot-melting drill bit 1, end cap A, outer shell B, and front hot-melting drill bit F are arranged sequentially from back to front, and the rear hot-melting drill bit 1 is interference-fitted with the end cap A. Connections: The outer shell B, air interlayer C, and biomimetic honeycomb interlayer D are arranged sequentially from the outside to the inside; the rear end of the outer shell B is fixed to the end cap A by 8 bolts of bolt group I2, and the front end of the outer shell B is fixed to the front thermoforming drill bit F by 8 bolts of bolt group II5; the 6 flanges of the rear flange group 17 of the air interlayer C are fixed to the 6 positioning holes of the outer positioning hole group I10 of the end cap A; the lower end of the front flange group 21 of the air interlayer C is connected to the outer positioning hole group II1 of the outer shell B. The six positioning holes of cable compartment 3 are fixedly connected; the six flanges of the rear flange group 17 of the bionic honeycomb interlayer D are fixedly connected to the six blind holes of the inner positioning hole group I9 of end cap A; the six flanges of the front flange group 21 of the bionic honeycomb interlayer D are fixedly connected to the six blind holes of the inner positioning hole group II14 of outer shell B; the cable compartment 3, the scientific payload compartment 4, and the bionic filter device E are arranged in sequence from back to front and are located in the space formed by end cap A, bionic honeycomb interlayer D, outer shell B, and front hot melt drill bit F. The bionic filter device E passes through the central hole I15 of outer shell B and the central hole III34 of front hot melt drill bit F in turn. The outer right side of the bionic filter device E is keyed to the central hole III34 of front hot melt drill bit F via key 6; the filter element box 7 is fixedly connected to the central hole II28 of bionic filter device E; sealing gaskets or sealing rings are provided at the connection points of end cap A, outer shell B, air interlayer C, bionic honeycomb interlayer D, and front hot melt drill bit F.

[0007] The base plate 8 of the end cap A is convex, and its front end face is provided with a sealing groove I8a, six positioning holes of the inner positioning hole group I9 and the outer positioning hole group I10, and eight threaded holes of the threaded hole group I11 from the inside to the outside.

[0008] The outer shell B is cylindrical, with eight threaded holes of threaded hole group II12 at its rear end, a central hole I15 on its front bottom plate, eight threaded holes of threaded hole group III16 on the left and right sides of the central hole, a sealing ring groove III8c near the central hole at the rear of the front bottom plate, six positioning holes each of outer positioning hole group II13 and inner positioning hole group II14 near both ends, and a sealing groove II8b near both ends at the front of the front bottom plate.

[0009] The air sandwich C is double-layered pipe-shaped, the outer pipe 18 and the inner pipe 19 are connected by 5 layers of longitudinal connecting blocks of the connecting block group 20 and 8 rows of connecting blocks of the connecting block group 22, and the 5 layers of connecting blocks are uniformly distributed in the vertical direction and the 8 rows of connecting blocks are uniformly distributed in the circumferential direction; the outer pipe 18, the inner pipe 19, the longitudinal connecting block group 20 and the transverse connecting block group 22 are connected to form the air sandwich; the 6 flanges of the front flange group I 21 and the rear flange group I 17 are respectively fixed to the front and rear ends of the outer pipe 18 and the inner pipe 19, and are uniformly distributed in the circumferential direction.

[0010] The bionic honeycomb sandwich D has a pipe-shaped substrate, the outer wall of the pipe wall is provided with 170-180 blind holes of the honeycomb blind hole group 24, the front and rear ends of the substrate are respectively fixed with the 6 flanges of the front flange group II 25 and the rear flange group II 23, and the 6 flanges are uniformly distributed in the circumferential direction.

[0011] The bionic filter device E has a pipe-shaped substrate, the inside of the substrate is provided with a partition plate 27, the partition plate 27 is provided with a center hole II 28, the rear part of the pipe wall of the partition plate 27 is provided with a rear bionic gill hole group 26, the front part of the pipe wall of the partition plate 27 is provided with a front bionic gill hole group 29, the number and arrangement of the holes of the rear bionic gill hole group 26 and the front bionic gill hole group 29 are the same, longitudinally, each layer is 7 layers with the same spacing, each layer is 12 holes and is uniformly distributed in the circumferential direction, and each layer of holes is parallel to the horizontal plane; each bionic gill hole is provided with 4 inclined plates of the inclined plate group 26a, the included angle a between the inclined plate and the horizontal plane is 3-5 degrees, and the acute angle of the inclined plate is towards the inside of the pipe-shaped substrate, each inclined plate is provided with 5 circular-arc-shaped protrusions of the bionic gill group 26b; the right side of the pipe is provided with a key groove I 30.

[0012] The front hot-melt drill bit F has a conical substrate, the outer side of the rear end surface of the substrate is provided with a sealing groove IV 31 and is uniformly distributed in the circumferential direction, the substrate is provided with a center hole III 34, the right side of the center hole III 34 is provided with a key groove 33, the front part of the center hole III 34 is provided with a conical groove 35, 6 threaded holes of a threaded hole group IV 32 are arranged between the sealing groove IV 31 and the key groove II 33, the outer surface of the substrate is provided with a spiral groove 36 and 42 drainage holes of a drainage hole group 37, and the 42 drainage holes are uniformly distributed on the spiral groove.

[0013] The working principle of the application is as follows:

[0014] In the process of thermal melting drilling under ice, the melted liquid flows through the spiral groove 36 on the front thermal melting drill bit F and enters the conical body groove 43 inside the front thermal melting drill bit F through the drainage hole group 45. The liquid in the conical body groove 43 sequentially passes through the front artificial gill hole group 29 of the bionic filtering device E, the filter cartridge box 7 and the rear artificial gill hole group 26 under the action of the vacuum pump, is filtered by the inclined plate group 26a and the artificial gill boss group 26b in the front and rear artificial gill hole groups 29 and 26 and the filter cartridge in the filter cartridge box 7, and enters the scientific payload cabin 4 for analysis. During drilling, because the shell B and the front thermal melting drill bit F are both working, the temperature environment inside and outside the drilling tool is complex, and in order to meet the working environment of the components in the scientific payload cabin 4, the external temperature needs to be isolated. The designed air sandwich C forms a multi-layer annular cavity with a bamboo joint design inside the air sandwich C through the outer tube 18, the inner tube 19, the longitudinal connecting block group 20 and the transverse connecting block group 22, and the cavity is filled with a gas with low thermal conductivity such as helium to reduce heat inflow. The bionic honeycomb structure D can also effectively reduce the temperature inside the drilling tool through the honeycomb blind hole group 24, and guarantee the working environment of the components in the scientific payload cabin 4. At the same time, the longitudinal connecting block group 20 and the transverse connecting block group 22 in the air sandwich C and the honeycomb blind hole group 24 in the bionic honeycomb sandwich D also have the effect of ensuring the strength of the drilling tool.

[0015] The beneficial effects of the present application are that the front drill bit outer surface is processed with a spiral groove with small holes, during drilling, the melted liquid flows upward through the spiral groove and enters the inside of the drilling tool through the small holes, and the solid particles with large mass gradually settle at the bottom of the spiral groove during the flow process, which can effectively perform the first stage of solid-liquid separation, at the same time, the spiral structure also increases the contact area of the drill bit and the ice surface, which can improve the thermal melting efficiency. The liquid flowing into the drilling tool will pass through the designed artificial gill filtering device, through multiple layers with multiple convex platforms, the solid particles will be separated from the liquid step by step, and the liquid will be further filtered, and finally filtered through the sponge in the filter cartridge box to obtain a gas-liquid mixture with less particles into the scientific payload cabin. The designed air sandwich simulates the bamboo joint structure, which is composed of multiple annular cavities with partitions between the upper and lower parts, which has the effect of separating the air cabin and increasing the strength of the sandwich. The designed bionic honeycomb sandwich is composed of multiple vertical hexagonal column structures which are stacked in the longitudinal direction, and the bionic honeycomb sandwich is close to the inside of the drilling tool, which separates the honeycomb structure from the scientific payload cabin and the cable compartment inside. The bionic honeycomb sandwich and the air sandwich work together to have good heat insulation and heat dissipation effect, so that the temperature inside the drilling tool is relatively suitable, which guarantees the working environment of the components in the scientific payload cabin. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure diagram of the bionic drainage and heat insulation thermal melting ice layer drilling tool;

[0017] Figure 2 is a cross-sectional view of end cap A;

[0018] Figure 3 is a top view of end cap A;

[0019] Figure 4 is a cross-sectional view of outer shell B;

[0020] Figure 5 is a top view of outer shell B;

[0021] Figure 6 is a cross-sectional view of air sandwich C;

[0022] Figure 7 is a top view of air sandwich C;

[0023] Figure 8 is a cross-sectional view of bionic honeycomb sandwich D;

[0024] Figure 9 is a top view of bionic honeycomb sandwich D;

[0025] Figure 10 is a cross-sectional view of bionic filter device E;

[0026] Figure 11 is a cross-sectional view of bionic gill hole;

[0027] Figure 12 is a cross-sectional view of Figure 11 is a cross-sectional view of a-a section;

[0028] Figure 13 is a cross-sectional view of front hot melt drill bit F;

[0029] Figure 14 is a top view of front hot melt drill bit F;

[0030] Wherein: A. end cap B. outer shell C. air sandwich D. bionic honeycomb sandwich E. bionic filter device F. front hot melt drill bit 1. rear hot melt drill bit 2. bolt set I 3. cable compartment 4. scientific payload cabin 5. bolt set II 6. key 7. filter cartridge box 8. base plate 8a. sealing groove I 8b. sealing groove II 8c. sealing groove III 9. inner positioning hole set I 10. outer positioning hole set I 11. threaded hole set I 12. threaded hole set II 13. outer positioning hole set II 14. inner positioning hole set II 15. center hole I 16. threaded hole set III 17. rear flange set I 18. outer tube 19. inner tube 20. longitudinal connecting block set 21. front flange set I 22. transverse connecting block set 23. rear flange set II 24. honeycomb blind hole set 25. front flange set II 26. rear bionic gill hole set 27. partition 28. center hole II 29. front bionic gill hole set 30. key groove I 31. sealing groove IV 32. threaded hole set IV 33. key groove II 34. center hole III 35. conical body groove 36. spiral groove 37. drainage hole set. DETAILED DESCRIPTION

[0031] The application will be described below in conjunction with the drawings.

[0032] As Figure 1 shown, the bionic drainage and heat insulation ice-melting layer drilling tool of the application is composed of an end cover A, an outer shell B, an air sandwich C, a bionic honeycomb sandwich D, a bionic filter device E, a front heat-melting drill head F, a rear heat-melting drill head 1, a bolt set I 2, a cable bin 3, a scientific load cabin 4, a bolt set II 5, a key 6 and a filter cartridge box 7. The rear heat-melting drill head 1, the end cover A, the outer shell B and the front heat-melting drill head F are arranged in sequence from back to front, and the rear heat-melting drill head 1 is connected with the end cover A in interference. The outer shell B, the air sandwich C and the bionic honeycomb sandwich D are arranged in sequence from outside to inside. The rear end of the outer shell B is fixedly connected with the end cover A through 8 bolts of the bolt set I 2, and the front end of the outer shell B is fixedly connected with the front heat-melting drill head F through 8 bolts of the bolt set II 5. The 6 flanges of the rear flange group 17 of the air sandwich C are fixedly connected with the 6 positioning holes of the outer positioning hole group I 10 of the end cover A. The lower end of the front flange group 21 of the air sandwich C is fixedly connected with the 6 positioning holes of the outer positioning hole group II 13 of the outer shell B. The 6 flanges of the rear flange group 17 of the bionic honeycomb sandwich D are fixedly connected with the 6 blind holes of the inner positioning hole group I 9 of the end cover A. The 6 flanges of the front flange group 21 of the bionic honeycomb sandwich D are fixedly connected with the 6 blind holes of the inner positioning hole group II 14 of the outer shell B. The cable bin 3, the scientific load cabin 4 and the bionic filter device E are arranged in sequence from back to front and located in the space formed by the end cover A, the bionic honeycomb sandwich D, the outer shell B and the front heat-melting drill head F. The bionic filter device E passes through the center hole I 15 of the outer shell B and the center hole III 34 of the front heat-melting drill head F in sequence. The outer ring right side of the bionic filter device E is keyed connected with the center hole III 34 of the front heat-melting drill head F through the key 6. The filter cartridge box 7 is fixedly connected with the center hole II 28 of the bionic filter device E. The connection positions of the end cover A, the outer shell B, the air sandwich C, the bionic honeycomb sandwich D and the front heat-melting drill head F are all provided with sealing pads or sealing rings.

[0033] As Figure 2 and Figure 3 shown, the base plate 8 of the end cover A is round and convex, and the front end face thereof is provided with, from inside to outside, a sealing groove I 8a, an inner positioning hole group I 9 and an outer positioning hole group I 10 each having 6 positioning holes, and a threaded hole group I 11 having 8 threaded holes.

[0034] As Figure 4 and Figure 5 shown, the outer shell B is cylindrical, and the rear end thereof is provided with a threaded hole group II 12 having 8 threaded holes. The front end bottom plate of the outer shell B is provided with a center hole I 15, and the left and right sides of the center hole are provided with a threaded hole group III 16 having 8 threaded holes. The rear side of the front end bottom plate near the center hole is provided with a sealing ring groove III 8c, and the two ends thereof are provided with an outer positioning hole group II 13 and an inner positioning hole group II 14 each having 6 positioning holes. The front side of the front end bottom plate near the two ends is provided with a sealing groove II 8b.

[0035] AsFigure 6 and Figure 7 As shown in the drawings, the air sandwich C is double-layered circular tube, the outer tube 18 and the inner tube 19 are connected by 5 layers of longitudinal connecting blocks of connecting block group 20 and 8 rows of connecting blocks of transverse connecting block group 22, and the 5 layers of connecting blocks are evenly distributed in the vertical direction and the 8 rows of connecting blocks are evenly distributed in the circumferential direction; the outer tube 18, the inner tube 19, the longitudinal connecting block group 20 and the transverse connecting block group 22 are connected to form the air sandwich; the 6 flanges of the front flange group I 21 and the rear flange group I 17 are respectively fixed to the front and rear ends of the outer tube 18 and the inner tube 19, and are evenly distributed in the circumferential direction.

[0036] As shown in the drawings, Figure 8 and Figure 9 As shown in the drawings, the biomimetic honeycomb sandwich D is circular tube, the outer wall of the tube is provided with 170-180 blind holes of the blind hole group 24, the front and rear ends of the substrate are respectively fixed with 6 flanges of the front flange group II 25 and the rear flange group II 23, and are evenly distributed in the circumferential direction.

[0037] As shown in the drawings, Figure 10 to Figure 12 As shown in the drawings, the biomimetic filter device E is similar to a circular tube, the inside is provided with a partition plate 27, the partition plate 27 is provided with a center hole II 28; the tube wall of the rear part of the partition plate 27 is provided with a rear artificial gill hole group 26; the tube wall of the front part of the partition plate 27 is provided with a front artificial gill hole group 29; the number and arrangement of the holes of the rear artificial gill hole group 26 and the front artificial gill hole group 29 are the same, longitudinally, each layer is 7 layers with the same spacing, each layer is 12, and is evenly distributed in the circumferential direction, and each layer of holes is parallel to the horizontal plane; each artificial gill hole is provided with 4 inclined plates of the inclined plate group 26a, the included angle α between the inclined plate and the horizontal plane is 3-5 degrees, and the acute angle is towards the inside of the circular tube substrate, and each inclined plate is provided with 5 circular-arc-shaped protrusions of the artificial gill group 26b; the right side of the circular tube is provided with a key groove I 30.

[0038] As shown in the drawings, Figure 13 and Figure 14 As shown in the drawings, the front hot-melt drill bit F is a circular cone, the outer side of the rear end surface of the substrate is provided with a sealing groove IV 31, and is evenly distributed in the circumferential direction; a center hole III 34 is provided, the right side of the center hole III 34 is provided with a key groove 33, the front part of the center hole III 34 is provided with a conical groove 35; 6 threaded holes of the threaded hole group IV 32 are arranged between the sealing groove IV 31 and the key groove II 33; the outer surface of the substrate is provided with a spiral groove 36 and 42 drainage holes of the drainage hole group 37, and the 42 drainage holes are evenly distributed on the spiral groove.

Claims

1. A biomimetic drilling tool for drainage and heat insulation in melting ice layers, characterized in that: It consists of an end cap (A), an outer shell (B), an air jacket (C), a biomimetic honeycomb jacket (D), a biomimetic filter (E), a front hot melt drill bit (F), a rear hot melt drill bit (1), bolt group I (2), a cable compartment (3), a scientific payload compartment (4), bolt group II (5), a key (6), and a filter cartridge (7). The rear hot melt drill bit (1), end cap (A), outer shell (B), and front hot melt drill bit (F) are arranged from back to front. The rear hot melt drill bit (1) is interference-fitted with the end cap (A). The outer shell (B), air jacket, and air jacket are arranged from back to front. The outer layer (C) and the biomimetic honeycomb interlayer (D) are arranged sequentially from the outside to the inside; the rear end of the outer shell (B) is fixed to the end cap (A) by 8 bolts of bolt group I (2), and the front end of the outer shell (B) is fixed to the front thermo-melting drill bit (F) by 8 bolts of bolt group II (5); the rear flange group (17) of the air interlayer (C) is fixed to the 6 positioning holes of the outer positioning hole group I (10) of the end cap (A); the lower end of the front flange group (21) of the air interlayer (C) is fixed to the 6 positioning holes of the outer positioning hole group II (13) of the outer shell (B). Hole fixing; the six flanges of the rear flange group (17) of the bionic honeycomb sandwich (D) are fixed to the six blind holes of the inner positioning hole group I (9) of the end cap (A); the six flanges of the front flange group (21) of the bionic honeycomb sandwich (D) are fixed to the six blind holes of the inner positioning hole group II (14) of the outer shell (B); the cable compartment (3), the scientific payload compartment (4) and the bionic filter device (E) are arranged in sequence from back to front and are located in the space formed by the end cap (A), the bionic honeycomb sandwich (D), the outer shell (B) and the front thermoplastic drill bit (F). Inside, the bionic filter device (E) passes through the central hole I (15) of the outer shell (B) and the central hole III (34) of the front hot melt drill bit (F) in succession. The outer right side of the bionic filter device (E) is connected to the central hole III (34) of the front hot melt drill bit (F) via a key (6). The filter element box (7) is fixed to the central hole II (28) of the bionic filter device (E). Sealing gaskets or sealing rings are provided at the connection points of the end cap (A), outer shell (B), air jacket (C), bionic honeycomb jacket (D) and front hot melt drill bit (F).

2. The biomimetic drainage and heat insulation drilling tool for melting ice layers according to claim 1, characterized in that: The base plate (8) of the end cap (A) is round and convex, and its front end face is provided with a sealing groove I (8a), six positioning holes of the inner positioning hole group I (9) and the outer positioning hole group I (10), and eight threaded holes of the threaded hole group I (11) from the inside to the outside.

3. The biomimetic drainage and heat insulation drilling tool for melting ice layers according to claim 1, characterized in that: The outer shell (B) is cylindrical, with eight threaded holes of threaded hole group II (12) at its rear end, a central hole I (15) on its front bottom plate, eight threaded holes of threaded hole group III (16) on the left and right sides of the central hole, a sealing ring groove III (8c) is provided near the central hole at the rear of the front bottom plate, and six positioning holes each of outer positioning hole group II (13) and inner positioning hole group II (14) are provided near both ends. A sealing groove II (8b) is provided near both ends at the front of the front bottom plate.

4. The biomimetic drainage and heat insulation drilling tool for melting ice layers according to claim 1, characterized in that: The air interlayer (C) is a double-layered circular tube. Its outer tube (18) and inner tube (19) are connected by 5 layers of connecting blocks in the longitudinal connecting block group (20) and 8 rows of connecting blocks in the transverse connecting block group (22). The 5 layers of connecting blocks are evenly distributed in the vertical direction, and the 8 rows of connecting blocks are evenly distributed in the circumferential direction. The outer tube (18), inner tube (19), longitudinal connecting block group (20) and transverse connecting block group (22) are connected to form an air interlayer. The 6 flanges of the front flange group I (21) and the rear flange group I (17) are respectively fixed to the front and rear ends of the outer tube (18) and the inner tube (19), and are evenly distributed on the circumference.

5. The biomimetic drainage and heat insulation drilling tool for melting ice layers according to claim 1, characterized in that: The biomimetic honeycomb sandwich (D) has a cylindrical substrate with 170-180 blind holes in a honeycomb blind hole group (24) on the outside of the tube wall. The front and rear ends of the substrate are respectively fixed with 6 flanges of the front flange group II (25) and the rear flange group II (23), which are evenly distributed on the circumference.

6. The biomimetic drainage and heat insulation drilling tool for melting ice layers according to claim 1, characterized in that: The biomimetic filter device (E) has a substrate similar to a cylindrical tube, with a partition (27) inside. The partition (27) has a central hole II (28). The rear wall of the partition (27) has a rear imitation fish gill hole group (26). The front wall of the partition (27) has a front imitation fish gill hole group (29). The rear imitation fish gill hole group (26) and the front imitation fish gill hole group (29) have the same number and arrangement of holes. They are all 7 layers with the same spacing in the longitudinal direction, with 12 holes in each layer, and they are evenly distributed on the circumference. The holes in each layer are parallel to the horizontal plane. Each imitation fish gill hole has 4 inclined plates of the inclined plate group (26a). The angle α between the inclined plate and the horizontal plane is 3-5 degrees, and its acute angle faces the inside of the cylindrical substrate. Each inclined plate has 5 arc-shaped protrusions of the imitation fish gill group (26b). The right side of the cylindrical tube has a keyway I (30).

7. The biomimetic drainage and heat insulation drilling tool for melting ice layers according to claim 1, characterized in that: The base of the front hot melt drill bit (F) is conical in shape. A sealing groove Ⅳ (31) is provided near the outer side of the rear end face of the base and is evenly distributed on the circumference. A central hole Ⅲ (34) is provided. A keyway (33) is provided on the right side of the central hole Ⅲ (34). A conical groove (35) is provided at the front of the central hole Ⅲ (34). Six threaded holes of the threaded hole group Ⅳ (32) are provided between the sealing groove Ⅳ (31) and the keyway Ⅱ (33). A spiral groove (36) and 42 drainage holes of the drainage hole group (37) are provided in the middle section of the outer side of the substrate. The 42 drainage holes are evenly distributed on the spiral groove.

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