CN218445331U - Indoor environment gas detection device - Google Patents

Abstract

The utility model relates to the technical field of detection equipment, in particular to an indoor environment gas detection device, which is convenient for a gas sensor to detect gases with different heights indoors and reduces the use limitation of the device; the automatic gas detection device comprises a base plate, a fixed box, two sets of screwed pipes, two sets of screw rods, two sets of electric push rods, two sets of first crown gear wheels, two sets of second crown gear wheels, two sets of first rotating shafts, a protective shell, two sets of first bevel gears, two sets of second bevel gears, a second rotating shaft, two sets of first fixed blocks, a first gear, a second gear, a speed reducer, a first motor, an installation baffle, a gas sensor, an adjusting device, a gas detector main body, a first slider and a slide bar, the top at the bottom plate is fixed to the fixed box, the top of the fixed box is provided with an opening, and the left and right sides at the inside wall of the bottom end of the fixed box is fixed to two sets of screwed pipes symmetries, the screw rods are connected with screwed pipes, and electric push rods fix the top at the screw rods.

Description

Indoor environment gas detection device

Technical Field

The utility model relates to a check out test set's technical field especially relates to an indoor environment gas detection device.

Background

An indoor environment gas detection device is an auxiliary device for indoor gas detection, and is widely used in the field of detection equipment; the existing indoor environment gas detection device is difficult to adjust the detection height, so that the use limitation of the device is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a be convenient for gas sensor detects indoor not gas of co-altitude, reduces its indoor environment gas detection device who uses the limitation.

The utility model discloses an indoor environment gas detection device, comprising a base plate, fixed case, two sets of screwed pipes, two sets of screw rods, two sets of electric putter, two sets of first crown gear, two sets of second crown gear, two sets of first axis of rotation, protective housing, power unit, the installation baffle, gas sensor, adjusting device, gas detection appearance main part, first slider and slide bar, the top at the bottom plate is fixed to the fixed case, the top of fixed case is provided with the opening, and the left and right sides at fixed bottom of the case inside wall is fixed to two sets of screwed pipe symmetries, the screw rod is connected with the screwed pipe dress, and electric putter fixes the top at the screw rod, electric putter's output and first crown gear connection, and first crown gear can be connected with second crown gear meshing transmission, two sets of second crown gear fix respectively in the bottom of two sets of first axis of rotation, two sets of first axis of rotation rotate respectively with the left and right sides of protective housing bottom and be connected, and the inside of protective housing is provided with the cavity, the left end upper portion is provided with the opening, the installation baffle is fixed at the middle part of protective housing cavity, and gas detection appearance are connected with the right side of the installation baffle, and the right side of installation baffle, and the right side of installation baffle is fixed at the right side of protective housing, and be connected with the gas detection appearance, and the right side of installation baffle, and be connected with the right side of the installation baffle, and be connected with the gas detection appearance, and the installation baffle, and be connected with the right side of the installation baffle, and be connected with the gas detection appearance.

Preferably, the power mechanism comprises two groups of first bevel gears, two groups of second bevel gears, a second rotating shaft, two groups of first fixing blocks, a first gear, a second gear, a speed reducer and a first motor, wherein the two groups of first bevel gears are respectively fixed at the top ends of the two groups of first rotating shafts, the first bevel gears are in meshing transmission connection with the second bevel gears, the two groups of second bevel gears are respectively fixed at the left end and the right end of the second rotating shaft, the second rotating shaft is in rotating connection with the two groups of first fixing blocks, the two groups of first fixing blocks are symmetrically fixed at the left side and the right side of the bottom end of the cavity of the protective shell, the first gear is fixed at the middle part of the second rotating shaft, the first gear is in meshing transmission connection with the second gear, the second gear is fixed at the output end of the speed reducer, the input end of the speed reducer is connected with the output end of the first motor, and the first motor is fixed at the middle part of the bottom end of the cavity of the protective shell.

Preferably, the adjusting device comprises a second motor, a screw rotating shaft, a second fixed block, a moving block, a second sliding block, a connecting rod and a sealing plate, the second motor is fixed at the middle part of the top end of the cavity of the protective shell, the output end of the second motor is connected with the screw rotating shaft, the screw rotating shaft is rotatably connected with the second fixed block and is also rotatably connected with the left end of the cavity of the protective shell, the second fixed block is fixed at the middle part of the top end of the cavity of the protective shell, the moving block is connected with the screw rotating shaft in a screwed mode, the second sliding block is fixed at the top end of the moving block and is slidably clamped with the left side of the bottom end of the cavity of the protective shell, the gas sensor is fixed at the left end of the moving block, the connecting rod is also fixed at the left end of the moving block and is located below the gas sensor, the sealing plate is fixed at the left end of the connecting rod, and the sealing plate can cover an opening at the upper part of the left end of the protective shell.

Preferably, the dustproof cover further comprises a third bevel gear, a fourth bevel gear, a third rotating shaft, a third gear, a fourth rotating shaft, multiple groups of fan blades, a reinforcing seat and a dustproof net, wherein the third bevel gear is fixed on the right side of the screw rotating shaft, the third bevel gear is in meshing transmission connection with the fourth bevel gear, the fourth bevel gear is fixed on the top end of the third rotating shaft, the third rotating shaft is in rotating connection with the top end of the mounting partition plate, the third gear is fixed at the bottom of the third rotating shaft, the third gear is in meshing transmission connection with the fourth gear, the fourth gear is fixed at the bottom of the fourth rotating shaft, the fourth rotating shaft is also in rotating connection with the top end of the mounting partition plate and is located on the right side of the third rotating shaft, the multiple groups of fan blades are uniformly fixed at the top end of the fourth rotating shaft, the reinforcing seat is fixed at the top end of the mounting partition plate and is in rotating connection with the third rotating shaft and the fourth rotating shaft, multiple groups of radiating holes are arranged in the middle of the top end of the protective shell, and the dustproof net covers the multiple groups of radiating holes and is fixed at the top end of the cavity of the protective shell.

Preferably, still include multiunit shrink pole, multiunit spring and multiunit cushion, multiunit shrink pole all with fix the left and right sides on fixed case top, the fixed suit of spring is on the shrink pole to the top at multiunit shrink pole is fixed respectively to the multiunit cushion.

Preferably, still include pushing hands and multiunit universal wheel, the right-hand member at the bottom plate is fixed to the pushing hands, and multiunit universal wheel is evenly fixed in the bottom of bottom plate to be provided with the brake braking piece on the universal wheel.

Preferably, still include the multiunit stiffener, the multiunit stiffener is fixed in the left and right sides both ends of two sets of screwed pipes respectively the symmetry to be connected with the bottom inside wall of fixed case.

Compared with the prior art, the beneficial effects of the utility model are that: drive reduction gear and second gear rotation through first motor, the second gear is connected with first gear engagement transmission, make the second axis of rotation drive the second bevel gear and rotate, the second bevel gear is connected with first bevel gear engagement transmission, thereby make two sets of first axes of rotation drive the rotation of second crown gear simultaneously, through controlling electric putter, make the second crown gear be connected with first crown gear engagement transmission, and then make the screw rod rotate, make protective housing use under the cooperation of first slider and slide bar, reciprocate, and detect indoor not gas of co-altitude through gas sensor, and transmit the signal that will detect to the gas detection appearance main part and carry out analysis display, the use limitation of device has been reduced.

Drawings

Fig. 1 is a schematic view of the internal front structure of the present invention;

fig. 2 is an enlarged schematic view of the utility model at a;

fig. 3 is an enlarged schematic structural view of the utility model B;

fig. 4 is an enlarged schematic structural diagram of the utility model C.

In the drawings, the reference numbers: 1. a base plate; 2. a fixed box; 3. a solenoid; 4. a screw; 5. an electric push rod; 6. a first crown gear; 7. a second crown gear; 8. a first rotating shaft; 9. a protective housing; 10. a first bevel gear; 11. a second bevel gear; 12. a second rotating shaft; 13. a first fixed block; 14. a first gear; 15. a second gear; 16. a speed reducer; 17. a first motor; 18. installing a partition plate; 19. a gas sensor; 20. a gas detector body; 21. a first slider; 22. a slide bar; 23. a second motor; 24. a lead screw shaft; 25. a second fixed block; 26. a moving block; 27. a second slider; 28. a connecting rod; 29. closing the plate; 30. a third bevel gear; 31. a fourth bevel gear; 32. a third rotating shaft; 33. a third gear; 34. a fourth gear; 35. a fourth rotating shaft; 36. a fan blade; 37. a reinforcement seat; 38. heat dissipation holes; 39. a dust screen; 40. a retracting lever; 41. a spring; 42. cushion blocks; 43. pushing a hand; 44. a universal wheel; 45. a reinforcing rod.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, an indoor environment gas detecting device of the present invention comprises a bottom plate 1, a fixed box 2, two sets of screw tubes 3, two sets of screw rods 4, two sets of electric push rods 5, two sets of first crown gears 6, two sets of second crown gears 7, two sets of first rotating shafts 8, a protective housing 9, two sets of first bevel gears 10, two sets of second bevel gears 11, a second rotating shaft 12, two sets of first fixed blocks 13, a first gear 14, a second gear 15, a speed reducer 16, a first motor 17, an installation partition 18, a gas sensor 19, an adjusting device, a gas detector main body 20, a first slider 21 and a slide rod 22, the fixed box 2 is fixed on the top end of the bottom plate 1, the top end of the fixed box 2 is provided with an opening, and the two sets of screw tubes 3 are symmetrically fixed on the left and right sides of the inner side walls of the bottom end of the fixed box 2, the screw rods 4 are screwed with the screw tubes 3, and the electric push rods 5 are fixed on the top end of the screw rods 4, the electric push rods 5 are connected with the first crown gears 6, and the first crown gears 6 can be engaged with the second crown gears 7, the second rotating shaft 7, the first rotating shaft 9 and the second crown gears 9 are respectively fixed on the left and right sides of the protective housing 10, the protective housing 12, the protective housing 10, the second rotating shaft 12, the protective housing 12 and the second rotating shaft, the protective housing 12 are respectively, the first gear 14 is fixed in the middle of the second rotating shaft 12, the first gear 14 is in meshing transmission connection with the second gear 15, the second gear 15 is fixed at the output end of the speed reducer 16, the input end of the speed reducer 16 is connected with the output end of the first motor 17, the first motor 17 is fixed in the middle of the bottom end of the cavity of the protective shell 9, the installation partition plate 18 is fixed in the middle of the cavity of the protective shell 9, the gas sensor 19 is connected with the protective shell 9 through an adjusting device, is positioned above the installation partition plate 18 and is electrically connected with the gas detector main body 20, the gas detector main body 20 is fixed on the right side of the top end of the installation partition plate 18, the first sliding block 21 is fixed at the right end of the protective shell 9 and is in sliding connection with the sliding rod 22, and the sliding rod 22 is fixed on the right side of the top end of the bottom plate 1; drive reduction gear 16 and second gear 15 through first motor 17 and rotate, second gear 15 is connected with first gear 14 meshing transmission, make second axis of rotation 12 drive second bevel gear 11 and rotate, second bevel gear 11 is connected with first bevel gear 10 meshing transmission, thereby make two sets of first axis of rotation 8 drive second crown gear 7 simultaneously and rotate, through control electric putter 5, make second crown gear 7 and first crown gear 6 meshing transmission be connected, and then make screw rod 4 rotate, make protective housing 9 use under the cooperation of first slider 21 and slide bar 22, reciprocate, and detect indoor not gas of co-altitude through gas sensor 19, and transmit the signal that detects to gas detector main part 20 and carry out analysis and display, the use limitation of device has been reduced.

Preferably, the adjusting device includes a second motor 23, a lead screw rotating shaft 24, a second fixed block 25, a moving block 26, a second slider 27, a connecting rod 28 and a sealing plate 29, the second motor 23 is fixed in the middle of the top end of the cavity of the protective housing 9, the output end of the second motor 23 is connected with the lead screw rotating shaft 24, the lead screw rotating shaft 24 is rotatably connected with the second fixed block 25 and also rotatably connected with the left end of the cavity of the protective housing 9, the second fixed block 25 is fixed in the middle of the top end of the cavity of the protective housing 9, the moving block 26 is screwed with the lead screw rotating shaft 24, the second slider 27 is fixed on the top end of the moving block 26, the second slider 27 is slidably clamped with the left side of the bottom end of the cavity of the protective housing 9, the gas sensor 19 is fixed on the left end of the moving block 26, the connecting rod 28 is also fixed on the left end of the moving block 26 and is located below the gas sensor 19, the sealing plate 29 is fixed on the left end of the connecting rod 28, and the sealing plate 29 can cover the opening on the upper portion of the left end of the protective housing 9; the second motor 23 drives the lead screw rotating shaft 24 to rotate, so that the moving block 26 drives the gas sensor 19 and the connecting rod 28 to move left and right under the cooperation of the second sliding block 27, the sealing plate 29 can synchronously open and close the opening at the upper part of the left end of the protective shell 9, the gas sensor 19 can conveniently enter and exit the protective shell 9, the gas sensor 19 is protected, damage caused by long-time exposure to the outside is avoided, and the service life of the device is prolonged.

Preferably, the device further comprises a third bevel gear 30, a fourth bevel gear 31, a third rotating shaft 32, a third gear 33, a fourth gear 34, a fourth rotating shaft 35, a plurality of sets of fan blades 36, a reinforcing seat 37 and a dust screen 39, wherein the third bevel gear 30 is fixed on the right side of the screw rotating shaft 24, the third bevel gear 30 is in meshing transmission connection with the fourth bevel gear 31, the fourth bevel gear 31 is fixed on the top end of the third rotating shaft 32, the third rotating shaft 32 is in rotational connection with the top end of the mounting partition plate 18, the third gear 33 is fixed on the bottom of the third rotating shaft 32, the third gear 33 is in meshing transmission connection with the fourth gear 34, the fourth gear 34 is fixed on the bottom of the fourth rotating shaft 35, the fourth rotating shaft 35 is also in rotational connection with the top end of the mounting partition plate 18 and is located on the right side of the third rotating shaft 32, the plurality of sets of fan blades 36 are uniformly fixed on the top end of the fourth rotating shaft 35, the reinforcing seat 37 is fixed on the top end of the mounting partition plate 18 and is in rotational connection with the third rotating shaft 32 and the fourth rotating shaft 35, and the middle of the top end of the protective housing 9 is provided with a plurality of heat dissipation holes 38, the dust screen 38 and the dust screen 39 is fixed on the top end of the housing 9; drive third bevel gear 30 through lead screw pivot 24 and rotate, third bevel gear 30 is connected with fourth bevel gear 31 meshing transmission, make third axis of rotation 32 drive third gear 33 and rotate, third gear 33 is connected with fourth gear 34 meshing transmission, thereby make fourth axis of rotation 35 drive multiunit flabellum 36 and rotate, and under louvre 38 and dust screen 39's cooperation was used, accelerate the thermal scattering and disappearing in the protective housing 9, avoid the component in the protective housing 9 to be heated ageing, further improve device's life.

Preferably, the device also comprises a plurality of groups of contraction rods 40, a plurality of groups of springs 41 and a plurality of groups of cushion blocks 42, wherein the groups of contraction rods 40 are fixed on the left side and the right side of the top end of the fixed box 2, the springs 41 are fixedly sleeved on the contraction rods 40, and the groups of cushion blocks 42 are respectively fixed on the top ends of the groups of contraction rods 40; through setting up shrink pole 40, spring 41 and cushion 42, it is spacing to carry out the buffering formula to protective housing 9, avoids protective housing 9 and fixed case 2 acutely to collide with, improves the stability in use of device.

Preferably, the device also comprises a push handle 43 and a plurality of groups of universal wheels 44, wherein the push handle 43 is fixed at the right end of the bottom plate 1, the plurality of groups of universal wheels 44 are uniformly fixed at the bottom end of the bottom plate 1, and the universal wheels 44 are provided with brake pads; by arranging the push handle 43 and the universal wheel 44, the whole movement of the device is convenient, and the flexibility and the usability of the device are improved.

Preferably, the box body further comprises a plurality of groups of reinforcing rods 45, wherein the groups of reinforcing rods 45 are symmetrically fixed at the left end and the right end of the two groups of spiral pipes 3 respectively and are connected with the inner side wall of the bottom end of the fixed box 2; through setting up stiffener 45, strengthen the stability that fixed case 2 and solenoid 3 are connected, improve the structural strength of device.

The utility model discloses an indoor environment gas detection device, when it works, at first, drive reduction gear 16 and second gear 15 through first motor 17 and rotate, second gear 15 meshes the transmission with first gear 14 and is connected, make second axis of rotation 12 drive second bevel gear 11 and rotate, second bevel gear 11 meshes the transmission with first bevel gear 10 and is connected, thereby make two sets of first axis of rotation 8 drive second crown gear 7 simultaneously and rotate, through controlling electric putter 5, make second crown gear 7 mesh the transmission with first crown gear 6 and be connected, and then make screw rod 4 rotate, make protective housing 9 use under the cooperation of first slider 21 and slide bar 22, move up and down, and detect the louvre through gas sensor 19 to indoor gas of different heights, and transmit the signal that detects to gas detector main part 20 and carry out analysis display, the use limitation of device has been reduced, later drive lead screw pivot 24 through second motor 23 and rotate, make movable block 26 use under the cooperation of second slider 27, drive gas sensor 19 and connecting rod 28 and move left and right, thereby make shrouding 29 can open protective housing 9 and left end synchronously, be convenient for opening and left end opening, make it connect fourth bevel gear 32 to drive third bevel gear 32 to use, make the third bevel gear 32 to drive third bevel gear 32 to prevent the transmission, thereby make the third bevel gear 33 and prevent the transmission 34 from damaging under the cooperation of the transmission of the third bevel gear 34 and the third bevel gear 33, accelerate thermal scattering and disappearing in the protective housing 9, avoid the interior component of protective housing 9 to be heated ageing, further improve the life of device, simultaneously through setting up shrink pole 40, spring 41 and cushion 42, it is spacing to carry out the buffering formula to protective housing 9, avoids protective housing 9 and fixed case 2 acutely to collide with, improves the stability in use of device.

The installation mode, the connection mode or the setting mode of the indoor environment gas detection device of the utility model are common mechanical modes, and the indoor environment gas detection device can be implemented as long as the beneficial effects can be achieved; the utility model discloses a gaseous detection device of indoor environment's gas sensor 19 and gas detector main part 20 for purchase on the market, this industry technical staff only need according to its subsidiary specification install and operate can.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (7)

1. An indoor environment gas detection device is characterized by comprising a bottom plate (1), a fixed box (2), two groups of screw pipes (3), two groups of screw rods (4), two groups of electric push rods (5), two groups of first crown gear wheels (6), two groups of second crown gear wheels (7), two groups of first rotating shafts (8), a protective shell (9), a power mechanism, an installation clapboard (18), a gas sensor (19), an adjusting device, a gas detector main body (20), a first sliding block (21) and a sliding rod (22), wherein the fixed box (2) is fixed at the top end of the bottom plate (1), the top end of the fixed box (2) is provided with an opening, the two groups of screw pipes (3) are symmetrically fixed at the left side and the right side of the inner side wall at the bottom end of the fixed box (2), the screw rods (4) are in threaded connection with the screw pipes (3), the electric push rods (5) are fixed at the top ends of the screw rods (4), the output ends of the electric push rods (5) are connected with the first crown gear wheels (6), the first crown gear wheels (6) can be in meshed transmission connection with the second crown gear wheels (7), the second crown gear wheels (7) are respectively fixed at the left side and the right side of the protective shell (9), and the inner side of the protective shell (9) are respectively, the gas detector is characterized in that an opening is formed in the upper portion of the left end, the mounting partition plate (18) is fixed in the middle of a cavity of the protective shell (9), a gas sensor (19) is connected with the protective shell (9) through an adjusting device, the power mechanism drives two sets of first rotating shafts (8) to rotate, is located above the mounting partition plate (18) and is electrically connected with the gas detector main body (20), the gas detector main body (20) is fixed on the right side of the top of the mounting partition plate (18), the first sliding block (21) is fixed at the right end of the protective shell (9) and is slidably connected with the sliding rod (22), and the sliding rod (22) is fixed on the right side of the top of the bottom plate (1).

2. The indoor environment gas detection device according to claim 1, wherein the power mechanism comprises two sets of first bevel gears (10), two sets of second bevel gears (11), a second rotating shaft (12), two sets of first fixing blocks (13), a first gear (14), a second gear (15), a speed reducer (16), and a first motor (17), the two sets of first bevel gears (10) are respectively fixed at the top ends of the two sets of first rotating shafts (8), the first bevel gears (10) are in meshing transmission connection with the second bevel gears (11), the two sets of second bevel gears (11) are respectively fixed at the left and right ends of the second rotating shaft (12), the second rotating shaft (12) is in rotating connection with the two sets of first fixing blocks (13), the two sets of first fixing blocks (13) are symmetrically fixed at the left and right sides of the chamber bottom end of the protection housing (9), the first gear (14) is fixed at the middle portion of the second rotating shaft (12), the first gear (14) is in meshing transmission connection with the second gear (15), the second gear (15) is fixed at the output end of the speed reducer (16), the input end of the first speed reducer (16) is connected with the middle portion of the protection housing (9), and the output end of the motor (17).

3. The indoor environment gas detection device as claimed in claim 2, wherein the adjusting device comprises a second motor (23), a screw shaft (24), a second fixed block (25), a moving block (26), a second slider (27), a connecting rod (28) and a sealing plate (29), the second motor (23) is fixed in the middle of the top end of the cavity of the protective housing (9), the output end of the second motor (23) is connected with the screw shaft (24), the screw shaft (24) is rotatably connected with the second fixed block (25) and is also rotatably connected with the left end of the cavity of the protective housing (9), the second fixed block (25) is fixed in the middle of the top end of the cavity of the protective housing (9), the moving block (26) is connected with the screw shaft (24) in a threaded manner, the second slider (27) is fixed on the top end of the moving block (26), the second slider (27) is slidably clamped with the left side of the bottom end of the cavity of the protective housing (9), the gas sensor (19) is fixed on the left end of the moving block (26), the connecting rod (28) covers the left end of the gas sensor (19), and the sealing plate (29) is fixed on the left end of the protective housing (9).

4. The indoor environmental gas detection device according to claim 3, further comprising a third bevel gear (30), a fourth bevel gear (31), a third rotation shaft (32), a third gear (33), a fourth gear (34), a fourth rotation shaft (35), a plurality of sets of fan blades (36), a reinforcing seat (37) and a dust screen (39), wherein the third bevel gear (30) is fixed at the right side of the screw shaft (24), the third bevel gear (30) is in meshing transmission connection with the fourth bevel gear (31), the fourth bevel gear (31) is fixed at the top end of the third rotation shaft (32), the third rotation shaft (32) is in rotational connection with the top end of the mounting partition (18), and the third heat dissipation hole (33) is fixed at the bottom of the third rotation shaft (32), the third gear (33) is in meshing transmission connection with the fourth gear (34), the fourth gear (34) is fixed at the bottom of the fourth rotation shaft (35), and the fourth rotation shaft (35) is also in rotational connection with the top end of the mounting partition (18) and is located at the right side of the third rotation shaft (32), and is fixed at the top end of the reinforcing seat (37) and the top end of the fourth rotation shaft (35) and the top end of the mounting partition (9) is uniformly arranged at the middle of the housing (35), the dust screen (39) covers the plurality of groups of heat dissipation holes (38) and is fixed at the top end of the cavity of the protective shell (9).

5. The indoor environment gas detection device according to claim 4, further comprising a plurality of contraction rods (40), a plurality of springs (41) and a plurality of cushion blocks (42), wherein the plurality of contraction rods (40) are fixed on the left and right sides of the top end of the fixed box (2), the springs (41) are fixedly sleeved on the contraction rods (40), and the plurality of cushion blocks (42) are respectively fixed on the top ends of the plurality of contraction rods (40).

6. The indoor environment gas detection device according to claim 5, further comprising a push handle (43) and a plurality of sets of universal wheels (44), wherein the push handle (43) is fixed at the right end of the bottom plate (1), the plurality of sets of universal wheels (44) are uniformly fixed at the bottom end of the bottom plate (1), and the universal wheels (44) are provided with brake pads.

7. The indoor environment gas detection device according to claim 6, further comprising a plurality of sets of reinforcing rods (45), wherein the plurality of sets of reinforcing rods (45) are symmetrically fixed at the left and right ends of the two sets of spiral pipes (3) respectively and connected with the inner side wall of the bottom end of the fixed box (2).

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