CN114810839A

CN114810839A - Bearing protection device for high-speed operation of drafting roller

Info

Publication number: CN114810839A
Application number: CN202111158315.5A
Authority: CN
Inventors: 王生健; 虎红斌; 孟利祥; 王小丰; 张浩杰; 夏涛; 郭众
Original assignee: Sinowin Chemical Fiber Co ltd
Current assignee: Sinowin Chemical Fiber Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-07-29
Anticipated expiration: 2041-09-30
Also published as: CN114810839B

Abstract

The invention discloses a bearing protection device with a drafting roller running at a high speed, which relates to the technical field of drafting spinning and comprises a protection box, a drafting roller body, a fixed sleeve and a bearing body, wherein the fixed sleeve is fixedly connected to the inner wall of the protection box, the outer ring of the bearing body is fixedly connected to the inner wall of the fixed sleeve, and one end of the drafting roller body is fixedly connected to the inner ring of the bearing body. The cooling device has a reasonable design structure, can fill cold water into the water cooling tank, sequentially conveys the cold water in the water cooling tank into the upper communicating pipe and the water inlet pipe by utilizing the operation of the circulating water pump, spirally flows in the water inlet pipe, cools the fixed sleeve, further plays a role in cooling the bearing body, finally flows downwards into the water cooling tank through the communication of the drain pipe and the lower communicating pipe to circularly flow, can cool the bearing body in work, and effectively plays a better protection effect on the bearing body.

Description

Bearing protection device for high-speed operation of drafting roller

Technical Field

The invention relates to the technical field of drafting spinning, in particular to a bearing protection device with a drafting roller running at a high speed.

Background

In the post-spinning process in the chemical fiber industry, a fiber tow needs to be stretched by a drafting roller, macromolecules in the fiber are oriented and arranged along the axial direction of the fiber through stretching, and simultaneously, crystallization or changes of crystallinity and a lattice structure can occur, so that the supermolecular structure of the fiber is further formed and tends to be perfect, and the mechanical property of the fiber is improved.

The drafting roller will accomplish the transmission of kinetic energy with the bearing combination when the operation, make the bearing produce a large amount of heat under the high-speed rotation of drafting roller, make its temperature will rise rapidly, consequently need cooling device to control the temperature of bearing, otherwise the bearing will produce under high temperature and warp until damaging to influence holistic use, and the bearing is fixed on the lateral wall of machinery usually, in order to improve the life of bearing, and guarantee the rotation effect of bearing, often need apply lubricating oil to the bearing, it is comparatively troublesome to operate. Therefore, the bearing protection device for the high-speed running of the drawing roller is provided to solve the problems.

Disclosure of Invention

One) technical problem to be solved

The invention aims to make up the defects of the prior art and provides a bearing protection device with a drafting roller running at a high speed.

II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high-speed moving bearing protector of draft roller, includes protecting box, draft roller body, fixed sleeve and bearing body, fixed sleeve fixed connection is in the inner wall of protecting box, the outer lane fixed connection of bearing body is in fixed sleeve's inner wall, the one end fixed connection of draft roller body is in the inner circle of bearing body, fixed sleeve's surface is provided with the cooling body that carries out cooling to fixed sleeve, the inside of protecting box is provided with and supports fixed establishment to fixed sleeve, fixed sleeve's inside is provided with carries out lubricated mechanism to the bearing body.

Furthermore, a box door is installed on the front face of the protection box, a reinforcing frame is fixedly connected to the back face of the box door, and the outer surface of the fixing sleeve is sleeved with the inner wall of the reinforcing frame.

Further, the cooling mechanism comprises a water cooling tank, an upper communicating pipe, a lower communicating pipe, a circulating water pump, a drain pipe, a water inlet pipe and a spiral pipe, the water cooling tank is arranged on the right side of the protection tank, the spiral pipe is wound on the outer surface of the fixed sleeve, the water inlet pipe and the water outlet pipe are respectively and fixedly communicated with the upper end and the lower end of the spiral pipe, the lower communicating pipe and the upper communicating pipe are embedded in the left side surface of the water cooling tank, the lower communicating pipe and the upper communicating pipe both extend to the inside of the water cooling tank, the circulating water pump is arranged inside the water cooling tank, the bottom end of the upper communicating pipe is fixedly communicated with the output end of the circulating water pump, the right ends of the water discharging pipe and the water inlet pipe both penetrate through the protective box and extend to the outside of the protective box, and drain pipe and inlet tube all with the inside sliding connection of guard box, the right-hand member of inlet tube can be dismantled with the top of last communicating pipe and be connected, the right-hand member of drain pipe can be dismantled with the top of communicating pipe down and be connected.

Further, fixed establishment includes external screw thread pipe, arc and two guide bars, the surface threaded connection of external screw thread pipe is in the left surface of protecting box, and the right-hand member of external screw thread pipe extends to the inside of protecting box, the right-hand member of external screw thread pipe is connected with circulating water pump's surface rotation, the equal fixed connection of two guide bars is in the surface in ventilation hole, and two guide bars are located the upper and lower both sides of external screw thread pipe respectively, the left end of two guide bars all runs through the protecting box and extends to the left side of protecting box, and two guide bars all with the inside sliding connection of protecting box, the inner wall in ventilation hole contacts with the surface of spiral pipe, the left end fixedly connected with of external screw thread pipe changes the handle.

Further, fixed establishment still includes the ventilation pipe, the right-hand member of ventilation pipe extends to the inside of external screw pipe and with the fixed intercommunication of arc, the ventilation hole that the equidistance was arranged is seted up to the inner wall of arc.

Further, the lubricating mechanism comprises an oil inlet pipe, a communicating groove, two oil inlet pipes and two oil absorption cottons, the two oil storage grooves are arranged inside the fixed sleeve, the two oil storage grooves are respectively positioned at the front side and the rear side of the fixed sleeve, the inner wall of each oil storage groove is fixedly connected with the oil absorption cottons, the inner wall of each fixed sleeve is inlaid with two groups of oil absorption blocks which are arranged in a circumferential array manner, the two groups of oil absorption blocks are respectively connected with the two oil absorption cottons, the communicating groove is arranged at the bottom inside the fixed sleeve, the communicating groove penetrates through the two oil absorption cottons and is communicated with the two oil storage grooves, the oil inlet pipe is fixedly connected with the left side surface of the protective box, the right end of the oil inlet pipe penetrates through the fixed sleeve and is communicated with the oil storage grooves, the inner wall of the fixed sleeve is fixedly connected with two groups of fixed frames, and the two groups of fixed frames are arranged in a circumferential array manner, and the two groups of fixed frames correspond to the two groups of oil absorption blocks respectively, the inner wall of each fixed frame is embedded with a ball, and the outer surface of each ball is contacted with the oil absorption blocks and the bearing body.

Furthermore, four edges of the inner wall of the protective box are fixedly connected with soundproof cotton.

Thirdly), the beneficial effects are as follows:

compared with the prior art, the bearing protection device for the high-speed running of the drafting roller has the following beneficial effects:

firstly, the cooling mechanism is arranged, cold water can be filled into the water cooling tank, the circulating water pump is operated to convey the cold water in the water cooling tank into the upper communicating pipe and the water inlet pipe in sequence, the cold water flows spirally in the water inlet pipe to cool the fixed sleeve, the bearing body is further cooled, the cold water finally flows into the water cooling tank through the communication of the water outlet pipe and the lower communicating pipe to flow circularly, the bearing body in work can be cooled, the bearing body is effectively protected, the bearing body is prevented from continuously operating at high temperature, and the spiral pipe has the effect of being convenient to disassemble and assemble.

Secondly, the invention can wind the spiral pipe on the surface of the fixed sleeve by the arrangement of the fixed mechanism, the rotating handle of the external thread pipe is rotated to ensure that the external thread pipe rotates on the left side surface of the protective box, thereby pushing the spiral pipe of the arc-shaped plate to approach and tightly attaching the spiral pipe to the surface of the fixed sleeve, so that the spiral pipe can better cool the fixed sleeve, thereby ensuring the cooling protection of the bearing body, and when the spiral pipe is dismantled, only the external thread pipe is rotated to control the arc plate to be far away from the spiral pipe, then the ventilation pipe can be communicated with a cold air blower, so that cold air is transmitted into the arc-shaped plate through the ventilation pipe, and finally discharged through the vent holes, so that the fixed sleeve and the bearing body can both obtain better cooling effect, and the working state of the bearing body is more stable, thereby greatly improving the practicability of the device.

Third, through the arrangement of the lubricating mechanism, lubricating oil is filled into the oil storage tanks through the oil inlet pipe, so that the two oil storage tanks are communicated with the communicating tank, the lubricating oil is fully filled into the two oil storage tanks, the lubricating oil can be adsorbed by the oil absorption cotton, the bearing body can be continuously lubricated, frequent addition of the lubricating oil is not needed, the lubricating oil of the oil absorption cotton is absorbed by the oil absorption block, the ball is shifted by the operation of the bearing body, the lubricating oil on the oil absorption block is dipped by the ball, the surface of the ball is fully filled with the lubricating oil, the two sides of the bearing body can be fully lubricated, the rotating effect of the bearing body can be ensured, the service life of the bearing body is prolonged, and the lubricating oil is more convenient and rapid to add.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a rear view of the present invention;

FIG. 3 is a front cross-sectional structural view of the present invention;

FIG. 4 is a schematic top view partially in section of the present invention;

FIG. 5 is a schematic right side cross-sectional view of the present invention;

FIG. 6 is an enlarged view of the structure of FIG. 4 at A in accordance with the present invention;

fig. 7 is an enlarged view of the structure at B in fig. 5 according to the present invention.

In the figure: 1. a protective box; 2. a draft roller body; 3. a box door; 4. fixing the sleeve; 5. a bearing body; 6. a fixing mechanism; 61. an externally threaded tube; 62. a vent pipe; 63. a guide bar; 64. an arc-shaped plate; 65. a vent hole; 7. a cooling mechanism; 71. a water cooling tank; 72. an upper communicating pipe; 73. a lower communicating pipe; 74. a water circulating pump; 75. a drain pipe; 76. a water inlet pipe; 77. a spiral tube; 8. a lubrication mechanism; 81. an oil inlet pipe; 82. an oil storage tank; 83. oil absorbing cotton; 84. an oil absorption block; 85. a fixing frame; 86. a ball bearing; 87. a communicating groove; 9. sound insulation cotton; 10. and (7) reinforcing the frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 7, the present invention provides a technical solution: a bearing protection device for a drafting roller running at a high speed comprises a protection box 1, a drafting roller body 2, a fixed sleeve 4 and a bearing body 5, wherein the fixed sleeve 4 is fixedly connected with the inner wall of the protection box 1, the fixed sleeve 4 is fixedly connected with the inner wall of the back surface of the protection box 1 to fix the fixed sleeve 4, the outer ring of the bearing body 5 is fixedly connected with the inner wall of the fixed sleeve 4, the fixed sleeve 4 can be made of aluminum alloy materials to better absorb heat on the bearing body 5 and facilitate cooling of the bearing body 5, one end of the drafting roller body 2 is fixedly connected with the inner ring of the bearing body 5, a box door 3 is installed on the front surface of the protection box 1, a reinforcing frame 10 is fixedly connected with the back surface of the box door 3, the inner wall of the reinforcing frame 10 is sleeved on the outer surface of the fixed sleeve 4, and the box door 3 and the reinforcing frame 10 are arranged, can play the effect of protection to the part in the protective housing 1, avoid causing personnel's mistake to bump, and reinforcing frame 10 can be better fix fixed sleeve 4, thereby the steadiness of fixed sleeve 4 has been guaranteed, avoid fixed sleeve 4 to take place to rock, the equal fixedly connected with soundproof cotton 9 in four edges of protective housing 1 inner wall, through setting up of soundproof cotton 9, can absorb the noise in the protective housing 1, weaken the noise, thereby played the noise reduction effect to the device, the practicality of the device is improved.

The outer surface of the fixed sleeve 4 is provided with a cooling mechanism 7 for cooling the fixed sleeve 4, the cooling mechanism 7 comprises a water cooling tank 71, an upper communicating pipe 72, a lower communicating pipe 73, a circulating water pump 74, a water discharging pipe 75, a water inlet pipe 76 and a spiral pipe 77, the water cooling tank 71 is arranged on the right side of the protective box 1, the upper surface of the water cooling tank 71 can be provided with a lift-type cover plate, an ice crystal box can be placed in the water cooling tank 71, the refrigerated ice crystal box can be placed in the water cooling tank 71, cold water in the water cooling tank 71 can be continuously cooled, subsequent cooling of the fixed sleeve 4 and the bearing body 5 is ensured, the spiral pipe 77 is wound on the outer surface of the fixed sleeve 4, the spiral pipe 77 can be made of a copper pipe, heat on the fixed sleeve 4 can be better absorbed, the spiral pipe 77 is enabled to be in contact with the surface of the fixed sleeve 4, and the fixed sleeve 4 is cooled, the water inlet pipe 76 and the water outlet pipe 75 are respectively and fixedly communicated with the upper end and the lower end of a spiral pipe 77, the lower communicating pipe 73 and the upper communicating pipe 72 are embedded in the left side surface of the water cooling tank 71, the lower communicating pipe 73 and the upper communicating pipe 72 extend into the water cooling tank 71, the circulating water pump 74 is installed in the water cooling tank 71, the bottom end of the upper communicating pipe 72 is fixedly communicated with the output end of the circulating water pump 74, the right ends of the water outlet pipe 75 and the water inlet pipe 76 penetrate through the protective tank 1 and extend to the outside of the protective tank 1, the water outlet pipe 75 and the water inlet pipe 76 are both in sliding connection with the inside of the protective tank 1, the water inlet pipe 76 and the water outlet pipe 75 can both penetrate through the right side of the protective tank 1 and are respectively communicated with the upper communicating pipe 72 and the lower communicating pipe 73, the right end of the water inlet pipe 76 is detachably connected with the top end of the upper communicating pipe 72, the right end of the water outlet pipe 75 is detachably connected with the top end of the lower communicating pipe 73, so that the water inlet pipe 76 is connected with the upper communicating pipe 72 through a water pipe joint, and the water discharging pipe 75 and the lower communicating pipe 73 are connected by a water pipe joint so as to install the spiral pipe 77 on the surface of the fixed sleeve 4, so that the spiral pipe 77 has an effect of easy assembly and disassembly, the cooling mechanism 7 is arranged to fill cold water into the water cooling tank 71, the circulating water pump 74 is operated to sequentially convey the cold water in the water cooling tank 71 into the upper communicating pipe 72 and the water inlet pipe 76, and the cold water spirally flows in the water inlet pipe 76, the temperature of the fixed sleeve 4 is reduced, the bearing body 5 is further cooled, and the cold water finally flows downwards into the water cooling tank 71 through the communication between the water discharge pipe 75 and the lower communicating pipe 73 to circularly flow, can cool down bearing body 5 in the work, effectually play better safeguard effect to bearing body 5, avoid bearing body 5 to continue to operate under high temperature.

The inside of the protecting box 1 is provided with a fixing mechanism 6 for supporting and fixing the fixing sleeve 4, the fixing mechanism 6 comprises an external thread pipe 61, an arc-shaped plate 64 and two guide rods 63, the outer surface of the external thread pipe 61 is connected with the left side surface of the protecting box 1 in a threaded manner, the right end of the external thread pipe 61 extends to the inside of the protecting box 1, the right end of the external thread pipe 61 is rotatably connected with the outer surface of a circulating water pump 74, the two guide rods 63 are fixedly connected with the outer surface of a vent hole 65, the two guide rods 63 are respectively positioned at the upper side and the lower side of the external thread pipe 61, the left ends of the two guide rods 63 penetrate through the protecting box 1 and extend to the left side of the protecting box 1, the two guide rods 63 are slidably connected with the inside of the protecting box 1, the arc-shaped plate 64 can be more stable during moving, the arc-shaped plate 64 has a guiding effect, the inner wall of the vent hole 65 is contacted with the outer surface of a spiral pipe 77, the left end of the external thread pipe 61 is fixedly connected with a rotating handle, the fixing mechanism 6 further comprises a ventilation pipe 62, the right end of the ventilation pipe 62 extends into the external thread pipe 61 and is fixedly communicated with the arc-shaped plate 64, the inner wall of the arc-shaped plate 64 is provided with ventilation holes 65 which are arranged at equal intervals, under the arrangement of the fixing mechanism 6, after the spiral pipe 77 is wound on the surface of the fixing sleeve 4, the rotating handle of the external thread pipe 61 can be rotated, so that the external thread pipe 61 rotates on the left side surface of the protection box 1, the arc-shaped plate 64 is pushed to be close to the spiral pipe 77, the spiral pipe 77 is tightly attached to the surface of the fixing sleeve 4, the spiral pipe 77 can better cool the fixing sleeve 4, the cooling protection of the bearing body 5 is ensured, and when the spiral pipe 77 is dismounted, only the external thread pipe 61 is required to rotate to control the arc-shaped plate 64 to be far away from the spiral pipe 77, can be linked together ventilation pipe 62 with the air-cooler after that, make cold wind will transmit to the arc 64 in through ventilation pipe 62 to finally discharge through ventilation hole 65, make fixed sleeve 4 and bearing body 5 all will obtain better cooling effect, and make bearing body 5's operating condition more stable, thereby improved the device's practicality greatly.

The inside of the fixed sleeve 4 is provided with a lubricating mechanism 8 for lubricating the bearing body 5, the lubricating mechanism 8 comprises an oil inlet pipe 81, a communicating groove 87, two oil inlet pipes 81 and two oil-absorbing cotton 83, the two oil storage grooves 82 are arranged inside the fixed sleeve 4, the two oil storage grooves 82 are respectively positioned at the front side and the rear side of the fixed sleeve 4, the inner wall of each oil storage groove 82 is fixedly connected with the oil-absorbing cotton 83, the inner wall of each fixed sleeve 4 is embedded with two groups of oil-absorbing blocks 84, the two groups of oil-absorbing blocks 84 are arranged in a circumferential array, the two groups of oil-absorbing blocks 84 are respectively connected with the two oil-absorbing cotton 83, the communicating groove 87 is arranged at the bottom inside the fixed sleeve 4, the communicating groove 87 penetrates through the two oil-absorbing cotton 83 and is communicated with the two oil storage grooves 82, the oil inlet pipe 81 is fixedly connected to the left side of the protective box 1, the right end of the oil inlet pipe 81 penetrates through the fixed sleeve 4 and is communicated with the oil storage grooves 82, the inner wall of the fixed sleeve 4 is fixedly connected with two groups of fixed frames 85, the two groups of fixed frames 85 are arranged in a circumferential array, the two groups of fixed frames 85 respectively correspond to the two groups of oil absorption blocks 84, the inner wall of each fixed frame 85 is inlaid with a ball 86, the outer surface of each ball 86 is contacted with the oil absorption blocks 84 and the bearing body 5, under the setting of the lubricating mechanism 8, only lubricating oil needs to be filled into the oil storage grooves 82 through the oil inlet pipe 81, the two oil storage grooves 82 are fully filled into the two oil storage grooves 82 under the communication of the communication grooves 87, the lubricating oil can be absorbed by the oil absorption cotton 83, so that the bearing body 5 can be continuously lubricated without frequently adding the lubricating oil, the lubricating oil of the oil absorption cotton 83 can be absorbed by the oil absorption blocks 84, when the bearing body 5 operates, the balls 86 can be shifted by the operation of the bearing body 5, and the balls 86 can dip the lubricating oil on the oil absorption blocks 84, the surface of the ball 86 is full of lubricating oil, so that the two sides of the bearing body 5 can be fully lubricated, the rotating effect of the bearing body 5 can be ensured, the service life of the bearing body 5 is prolonged, and the adding of the lubricating oil is more convenient.

The working principle is as follows: when in use, firstly, the spiral pipe 77 is wound on the surface of the fixed sleeve 4, then the drain pipe 75 and the water inlet pipe 76 both penetrate through the right side of the protective box 1 and are respectively connected with the lower communicating pipe 73 and the upper communicating pipe 72, then cold water is poured into the water cooling box 71, then the external spiral pipe 61 is rotated, so that the external spiral pipe 61 rotates on the left side surface of the protective box 1, further the arc-shaped plate 64 is pushed to be close to the spiral pipe 77, the spiral pipe 77 can be tightly attached to the surface of the fixed sleeve 4, so that the spiral pipe 77 can carry out better cooling protection on the fixed sleeve 4, namely, the box door 3 can be closed, the reinforcing frame 10 can play a better supporting and fixing effect on the fixed sleeve 4, when the bearing body 5 runs at high speed along with the drafting roller body 2, the cold water in the water cooling box 71 is sequentially conveyed into the upper communicating pipe 72 and the water inlet pipe 76 by the running of the circulating water pump 74, and spirally flows in the water inlet pipe 76 to cool the fixed sleeve 4, further cooling the bearing body 5, and the cold water finally flows downwards into the water cooling tank 71 through the communication of the water discharge pipe 75 and the lower communicating pipe 73 to circularly flow, so that the bearing body 5 in operation can be cooled, the bearing body 5 is effectively protected, the bearing body 5 is prevented from continuously running at high temperature, then the ventilation pipe 62 can be communicated with an air cooler, cold air is transmitted into the arc-shaped plate 64 through the ventilation pipe 62 and finally discharged through the ventilation hole 65, the fixed sleeve 4 and the bearing body 5 can obtain better cooling effect, the inside of the protective box 1 can be better cooled, when the bearing body 5 needs to be lubricated, only the lubricating oil needs to be filled into the oil storage tank 82 through the oil inlet pipe 81, make two oil storage tanks 82 under the intercommunication of intercommunication groove 87, with the abundant pouring of lubricating oil to in two oil storage tanks 82, and the cotton 83 of oil absorption can adsorb lubricating oil, so that last lubricate bearing body 5, need not frequent additional lubrication, then inhale the cotton 83 lubricating oil of oil absorption block 84, can stir ball 86 under bearing body 5's operation, make ball 86 will dip in and get the lubricating oil on the oil absorption block 84, make ball 86's surface be full of lubricating oil, can fully lubricate bearing body 5's both sides, the rotation effect of bearing body 5 can be guaranteed, bearing body 5's life has also been improved, and also more convenient when adding lubricating oil.

Claims

1. The utility model provides a high-speed moving bearing protector of draft roller, includes protecting box (1), draft roller body (2), adapter sleeve (4) and bearing body (5), its characterized in that: fixed sleeve (4) fixed connection is in the inner wall of protective housing (1), the outer lane fixed connection of bearing body (5) is in the inner wall of fixed sleeve (4), the one end fixed connection of draft roller body (2) is in the inner circle of bearing body (5), the surface of fixed sleeve (4) is provided with cooling body (7) that carries out cooling to fixed sleeve (4), the inside of protective housing (1) is provided with and supports fixed establishment (6) to fixed sleeve (4), the inside of fixed sleeve (4) is provided with carries out lubricated mechanism (8) lubricated to bearing body (5).

2. The bearing protector for the drafting roller operating at a high speed as claimed in claim 1, wherein: the front side of the protection box (1) is provided with a box door (3), the back side of the box door (3) is fixedly connected with a reinforcing frame (10), and the inner wall of the reinforcing frame (10) is sleeved on the outer surface of the fixing sleeve (4).

3. The bearing protector for the drafting roller operating at a high speed as claimed in claim 1, wherein: the cooling mechanism (7) comprises a water cooling tank (71), an upper communicating pipe (72), a lower communicating pipe (73), a circulating water pump (74), a drain pipe (75), a water inlet pipe (76) and a spiral pipe (77), wherein the water cooling tank (71) is arranged on the right side of the protective tank (1), the spiral pipe (77) is wound on the outer surface of the fixed sleeve (4), the water inlet pipe (76) and the drain pipe (75) are respectively and fixedly communicated with the upper end and the lower end of the spiral pipe (77), the lower communicating pipe (73) and the upper communicating pipe (72) are embedded in the left side surface of the water cooling tank (71), the lower communicating pipe (73) and the upper communicating pipe (72) are respectively extended to the inside of the water cooling tank (71), the circulating water pump (74) is arranged in the water cooling tank (71), the bottom end of the upper communicating pipe (72) is fixedly communicated with the output end of the circulating water pump (74), and the right ends of the drain pipe (75) and the water inlet pipe (76) penetrate through the protective tank (1) and are extended to the protective tank (1) 1) The outside of, and drain pipe (75) and inlet tube (76) all with the inside sliding connection of guard box (1), the right-hand member of inlet tube (76) can be dismantled with the top of last communicating pipe (72) and be connected, the right-hand member of drain pipe (75) can be dismantled with the top of lower communicating pipe (73) and be connected.

4. A draft roller high speed bearing guard according to claim 3 wherein: the fixing mechanism (6) comprises an external threaded pipe (61), an arc-shaped plate (64) and two guide rods (63), the outer surface of the external threaded pipe (61) is in threaded connection with the left side face of the protective box (1), the right end of the external threaded pipe (61) extends to the inside of the protective box (1), the right end of the external threaded pipe (61) is connected with the outer surface of the circulating water pump (74) in a rotating mode, the two guide rods (63) are fixedly connected to the outer surface of the vent hole (65), the two guide rods (63) are respectively located on the upper side and the lower side of the external threaded pipe (61), the left ends of the two guide rods (63) all penetrate through the protective box (1) and extend to the left side of the protective box (1), the two guide rods (63) are in sliding connection with the inner portion of the protective box (1), the inner wall of the vent hole (65) is in contact with the outer surface of the spiral pipe (77), the left end of the external thread pipe (61) is fixedly connected with a rotating handle.

5. The bearing protector for the drafting roller operating at high speed as claimed in claim 4, wherein: the fixing mechanism (6) further comprises a ventilation pipe (62), the right end of the ventilation pipe (62) extends to the inside of the external threaded pipe (61) and is fixedly communicated with the arc-shaped plate (64), and ventilation holes (65) which are arranged equidistantly are formed in the inner wall of the arc-shaped plate (64).

6. The bearing protector for the drafting roller operating at a high speed as claimed in claim 1, wherein: lubricating mechanism (8) are including advancing oil pipe (81), intercommunication groove (87), two advance oil pipe (81) and two oil absorption cotton (83), the inside in fixed sleeving (4) is all seted up in two oil storage grooves (82), and just two oil storage grooves (82) are located the front and back both sides of fixed sleeving (4) respectively, the equal fixedly connected with oil absorption cotton (83) of inner wall of every oil storage groove (82), the inner wall of every fixed sleeving (4) all inlays and has two sets of oil absorption piece (84), and two sets of oil absorption piece (84) all are circumference array arrangement, two sets of oil absorption piece (84) are connected with two oil absorption cotton (83) respectively, the bottom in fixed sleeving (4) is seted up in intercommunication groove (87), intercommunication groove (87) run through two oil absorption cotton (83) and are linked together with two oil storage grooves (82), advance oil pipe (81) fixed connection in the left surface of protective housing (1), the right-hand member of advancing oil pipe (81) runs through fixed sleeve (4) and is linked together with oil storage tank (82), the two sets of fixed frames (85) of inner wall fixedly connected with of fixed sleeve (4), two sets of fixed frames (85) all are the circumference array and arrange, and two sets of fixed frames (85) are corresponding with two sets of oil absorption piece (84) respectively, every the inner wall of fixed frame (85) all inlays ball (86), the surface of every ball (86) all contacts with oil absorption piece (84) and bearing body (5).

7. The bearing protector for the drafting roller operating at a high speed as claimed in claim 1, wherein: four edges of the inner wall of the protective box (1) are fixedly connected with soundproof cotton (9).