CN216917500U

CN216917500U - Belt conveyer with online cleaning function

Info

Publication number: CN216917500U
Application number: CN202122498047.3U
Authority: CN
Inventors: 吴晓剑
Original assignee: Jiangsu Boshida Hydraulic Electromechanical Co ltd
Current assignee: Jiangsu Boshida Hydraulic Electromechanical Co ltd
Priority date: 2021-10-16
Filing date: 2021-10-16
Publication date: 2022-07-08
Anticipated expiration: 2031-10-16

Abstract

The utility model relates to a belt conveyer with an online cleaning function, which comprises a bracket, a conveying mechanism and a cleaning mechanism, wherein the conveying mechanism is arranged on the bracket, the cleaning mechanism is arranged on the conveying mechanism, the cleaning mechanism comprises a moving component, a cleaning component and an air injection component, the conveying mechanism comprises a belt, a driving component and a conveying component, a linkage component is arranged on the cleaning mechanism, the belt conveyer with the online cleaning function realizes the transportation of materials through the conveying mechanism, the cleaning of the conveying mechanism is realized through the cleaning mechanism, the online cleaning of the belt is realized through the linkage of the conveying mechanism and the cleaning mechanism, the linkage adopts a pure mechanical structure, the stability and the service life of the device are improved, compared with the existing cleaning mechanism, the mechanism performs double cleaning on the belt through a brush brushing mode and an air injection mode, and realizes a better cleaning effect, and the flexible thrust is adopted, so that the brush is prevented from damaging the belt, and the belt is protected.

Description

Belt conveyer with online cleaning function

Technical Field

The utility model relates to a belt conveyor with an online cleaning function.

Background

The belt conveyer is a continuous conveyer with flexible conveyer belt as material bearing and drawing member, and has fixed and movable belt around the driving roller and direction-changing roller, and the upper and lower branches between the two rollers are supported by several rollers.

When the belt feeder is carrying materials such as sand, ore, sand or piece are easy to adhere on the belt, and current belt feeder does not generally set up better clean mechanism, along with the operation of belt, and sand or piece adhesion on the belt can fall into between cylinder and the belt to cause the device wearing and tearing, damage even.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: in order to overcome the defects of the prior art, the belt conveyor with the online cleaning function is provided.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a belt conveyor with an online cleaning function comprises a support, a conveying mechanism and a cleaning mechanism, wherein the conveying mechanism is arranged on the support, and the cleaning mechanism is arranged on the conveying mechanism;

the cleaning mechanism comprises a moving assembly, a cleaning assembly and an air injection assembly, the moving assembly comprises a lead screw, a moving rod and a first spring, a sliding groove is formed in the support, one end of the moving rod is located in the sliding groove, the moving rod is in sliding connection with the sliding groove, the first spring is arranged in the sliding groove, one end of the first spring is connected with the sliding groove, the other end of the first spring is connected with the moving rod, the lead screw is arranged on the support, the lead screw penetrates through the moving rod, the lead screw is in threaded connection with the moving rod, the cleaning assembly comprises a push rod, a brush and a second spring, a groove is formed in the moving rod, one end of the push rod is located in the groove, the other end of the push rod extends out of the groove, the push rod is in sliding connection with the groove, the brush is arranged at one end of the push rod, which is located outside the groove, and the brush is abutted against the conveying mechanism, the second spring sets up in the recess, the one end and the groove connection of second spring, the other end and the push rod of second spring are connected, jet-propelled subassembly includes the gasbag, goes into trachea, outlet duct and nozzle, the gasbag sets up in the spout, the gasbag is located the carriage release lever and keeps away from one side of first spring, the one end and the spout of gasbag are connected, the other end and the carriage release lever of gasbag are connected, the nozzle sets up under transport mechanism, nozzle and transport mechanism are just to setting up, it all sets up on the gasbag to go into trachea and outlet duct, go into trachea and outlet duct all with the inside intercommunication of gasbag, the nozzle passes through outlet duct and the inside intercommunication of gasbag.

Transport mechanism includes belt, drive assembly and conveying assembly, drive assembly includes motor and drive shaft, the motor level sets up on the support, the drive shaft is installed on the motor, conveying assembly includes two conveying unit, and two conveying unit set up respectively at the both ends of support, conveying unit includes pivot and cylinder, the pivot sets up on the support, the cylinder jacket is established in the pivot, the cylinder is connected with the pivot key-type, and one of them pivot setting keeps away from the one end of motor at the drive shaft, the pivot is parallel with the drive shaft, the pivot is connected with the drive shaft transmission, the belt cover is established on two cylinders of two conveying unit, and two cylinders pass through belt transmission and connect, the brush supports with one side that the belt is close to the carriage release lever and leans on, the nozzle is just to setting up with the belt.

In order to realize the linkage, be equipped with the linkage subassembly on the clean mechanism, the linkage subassembly includes accelerating unit and rotation unit, accelerating unit includes gear wheel, pinion and fixed axle, the gear wheel cover is established in the drive shaft, gear wheel and drive shaft key-type connection, the fixed axle sets up the one side at the drive shaft, the pinion cover is established on the fixed axle, pinion and fixed axle key-type connection, pinion and gear engagement, rotation unit includes runner, half-gear, location axle and commentaries on classics gear, the location axle sets up the one side at the lead screw, the half-gear cover is established on the location axle, half-gear and location axle key-type connection, the runner has two, and two runners are established respectively to be established on fixed axle and location axle, and two runners are connected with fixed axle and location axle key-type connection respectively, the commentaries on classics gear cover is established on the lead screw, the rotary gear is in key connection with the screw rod, and the half gear is meshed with the rotary gear.

In order to support the device, the support includes base and branch, branch has two, and two branches set up the both ends at the base respectively, motor and pivot all set up on branch, the spout sets up on the base.

For carrying out better spacing to the removal of carriage release lever, the one end that the carriage release lever is located the spout is equipped with the slider, be equipped with the bar groove in the spout, the slider is located the bar inslot, slider and bar groove sliding connection.

In order to carry out better spacing to the removal of carriage release lever, the slider has two, and two sliders set up respectively in the both sides of carriage release lever, the bar groove has two, and two sliders are located two bar inslots respectively.

In order to enable air to enter the air bag only through the air inlet pipe and then to be discharged through the air outlet pipe, a one-way valve is arranged at the joint of the air inlet pipe and the air bag, and a one-way valve is arranged at the joint of the air outlet pipe and the air bag.

The belt conveyor with the online cleaning function has the advantages that the material is conveyed through the conveying mechanism, the conveying mechanism is cleaned through the cleaning mechanism, compared with the existing belt conveyor, the belt conveyor with the online cleaning function has the advantages that online cleaning of the belt is achieved through linkage of the conveying mechanism and the cleaning mechanism, the linkage is of a pure mechanical structure, stability of the belt conveyor is improved, the service life of the belt conveyor is prolonged, compared with the existing cleaning mechanism, the belt conveyor with the online cleaning function is cleaned in a double-cleaning mode through brush brushing and air injection, a better cleaning effect is achieved, flexible thrust is adopted, the belt is prevented from being damaged by a brush, and the belt is protected.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a belt conveyor with an on-line cleaning function of the present invention;

FIG. 2 is a schematic structural view of a cleaning mechanism of the belt conveyor with an on-line cleaning function of the present invention;

in the figure: 1. the automatic air-blowing device comprises a screw rod, 2 a moving rod, 3 a first spring, 4 a push rod, 5 a brush, 6 a second spring, 7 an air bag, 8 an air inlet pipe, 9 an air outlet pipe, 10 a nozzle, 11 a belt, 12 a motor, 13 a driving shaft, 14 a rotating shaft, 15 a roller, 16 a large gear, 17 a small gear, 18 a fixed shaft, 19 a rotating wheel, 20 a half gear, 21 a positioning shaft, 22 a rotating gear, 23 a base, 24 a supporting rod and 25 a sliding block.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, a belt conveyor with an online cleaning function comprises a support, a conveying mechanism and a cleaning mechanism, wherein the conveying mechanism is arranged on the support, and the cleaning mechanism is arranged on the conveying mechanism;

when the device uses, realize the transportation of material through transport mechanism, realize transport mechanism's cleanness through clean mechanism.

As shown in fig. 2, the cleaning mechanism comprises a moving assembly, a cleaning assembly and an air injection assembly, the moving assembly comprises a screw rod 1, a moving rod 2 and a first spring 3, a sliding groove is arranged on the support, one end of the moving rod 2 is positioned in the sliding groove, the moving rod 2 is in sliding connection with the sliding groove, the first spring 3 is arranged in the sliding groove, one end of the first spring 3 is connected with the sliding groove, the other end of the first spring 3 is connected with the moving rod 2, the screw rod 1 is arranged on the support, the screw rod 1 passes through the moving rod 2, the screw rod 1 is in threaded connection with the moving rod 2, the cleaning assembly comprises a push rod 4, a brush 5 and a second spring 6, a groove is arranged on the moving rod 2, one end of the push rod 4 is positioned in the groove, the other end of the push rod 4 extends out of the groove, the push rod 4 is in sliding connection with the groove, the brush 5 is arranged at one end of the push rod 4 positioned outside the groove, the brush 5 abuts against the conveying mechanism, the second spring 6 is arranged in the groove, one end of the second spring 6 is connected with the groove, the other end of the second spring 6 is connected with the push rod 4, the air injection assembly comprises an air bag 7, an air inlet pipe 8, an air outlet pipe 9 and a nozzle 10, the air bag 7 is arranged in the chute, the air bag 7 is located on one side, away from the first spring 3, of the moving rod 2, one end of the air bag 7 is connected with the chute, the other end of the air bag 7 is connected with the moving rod 2, the nozzle 10 is arranged right below the conveying mechanism, the nozzle 10 is arranged right opposite to the conveying mechanism, the air inlet pipe 8 and the air outlet pipe 9 are both arranged on the air bag 7, the air inlet pipe 8 and the air outlet pipe 9 are both communicated with the interior of the air bag 7, and the nozzle 10 is communicated with the interior of the air bag 7 through the air outlet pipe 9;

here, the second spring 6 is in a deformed state, the restoring force of the second spring 6 generates an outward thrust to the push rod 4, the push rod 4 generates an outward thrust to the brush 5, so that the brush 5 is always attached to the belt 11, the brush 5 is also attached to the belt 11 by the restoring force of the second spring 6, and a flexible thrust is adopted to avoid damage to the belt 11, the screw rod 1 rotates to drive the moving rod 2 to move, the moving rod 2 drives the push rod 4 to move, the push rod 4 drives the brush 5 to move, the moving rod 2 moves to deform the first spring 3, when the screw rod 1 is not subjected to a driving force, the moving rod 2 moves in a reverse direction under the restoring force of the first spring 3, so that the push rod 4 moves in a reverse direction, the push rod 4 drives the brush 5 to move in a reverse direction, so that the brush 5 reciprocates, thereby better brushing down sand, dust and the like adhered to the belt 11, realize better clean effect, simultaneously along with the removal of carriage release lever 2, carriage release lever 2 compresses gasbag 7, make the air in the gasbag 7 impress in nozzle 10 through outlet duct 9, then spout through nozzle 10, thereby make spun air current blow down the dust on the belt 11, realize better clean effect, when carriage release lever 2 reverse movement, gasbag 7 can not be blockked, under the effect of elastic restoring force, will expand once more, thereby make outside air get into gasbag 7 through inlet duct 8 and fill, here the check valve on inlet duct 8 can only admit air and can not give vent to anger, the check valve on outlet duct 9 can only give vent to anger and can not admit air, thereby make air can only get into gasbag 7 through inlet duct 8, then discharge through outlet duct 9, here carriage release lever 2 removes drive slider 25 and moves, slider 25 is located the bar inslot, thereby make slider 25 only can move along the axis direction of bar inslot, thereby limiting the movement of the slider 25.

As shown in fig. 1, the conveying mechanism includes a belt 11, a driving assembly and a conveying assembly, the driving assembly includes a motor 12 and a driving shaft 13, the motor 12 is horizontally disposed on the bracket, the driving shaft 13 is mounted on the motor 12, the conveying assembly includes two conveying units, the two conveying units are respectively disposed at two ends of the bracket, the conveying unit includes a rotating shaft 14 and a roller 15, the rotating shaft 14 is disposed on the bracket, the roller 15 is sleeved on the rotating shaft 14, the roller 15 is connected with the rotating shaft 14 in a key manner, one of the rotating shafts 14 is disposed at one end of the driving shaft 13 far away from the motor 12, the rotating shaft 14 is parallel to the driving shaft 13, the rotating shaft 14 is connected with the driving shaft 13 in a transmission manner, the belt 11 is sleeved on the two rollers 15 of the two conveying units, the two rollers 15 are connected in a transmission manner through the belt 11, the brush 5 is abutted against one side of the belt 11 close to the moving rod 2, the nozzle 10 is arranged opposite to the belt 11.

When the motor 12 is operated, the motor 12 drives the driving shaft 13 to rotate, the driving shaft 13 drives the rotating shaft 14 connected with the driving shaft to rotate, the rotating shaft 14 drives the rollers 15 connected with the rotating shaft to rotate, the two rollers 15 tighten the belt 11, and therefore, under the action of friction force, the movement of the belt 11 is realized, and the material on the belt 11 is conveyed.

As shown in fig. 1, in order to realize the linkage, be equipped with the linkage subassembly on the clean mechanism, the linkage subassembly includes accelerating unit and rotation unit, accelerating unit includes gear wheel 16, pinion 17 and fixed axle 18, gear wheel 16 cover is established on drive shaft 13, gear wheel 16 and the key-type connection of drive shaft 13, fixed axle 18 sets up the one side at drive shaft 13, pinion 17 cover is established on fixed axle 18, pinion 17 and the key-type connection of fixed axle 18, pinion 17 meshes with gear wheel 16, the rotation unit includes runner 19, half-gear 20, location axle 21 and runner gear 22, location axle 21 sets up the one side at lead screw 1, half-gear 20 cover is established on location axle 21, half-gear 20 and location axle 21 key-type connection, runner 19 has two, and two runner 19 overlap respectively on fixed axle 18 and location axle 21, the two rotating wheels 19 are respectively in key connection with the fixed shaft 18 and the positioning shaft 21, the rotating gear 22 is sleeved on the screw rod 1, the rotating gear 22 is in key connection with the screw rod 1, and the half gear 20 is meshed with the rotating gear 22.

The driving shaft 13 drives the gearwheel 16 connected with it to rotate, the gearwheel 16 drives the pinion 17 to rotate, the pinion 17 drives the fixed shaft 18 to rotate, the fixed shaft 18 drives the runner 19 connected with it to rotate, the runner 19 drives the other runner 19 to rotate through the belt 11, the other runner 19 drives the positioning shaft 21 to rotate, the positioning shaft 21 drives the half gear 20 to rotate, when the half gear 20 is engaged with the runner 22, the half gear 20 drives the runner 22 to rotate, the runner 22 drives the screw rod 1 to rotate, so that the brush 5 moves, when the half gear 20 is not engaged with the runner 22, the moving rod 2 moves reversely under the restoring force of the first spring 3, so that the brush 5 moves reversely, wherein one rotation of the gearwheel 16 drives the pinion 17 to rotate for a plurality of turns, so that the rotation of the pinion 17 is accelerated, so that the rotation of the half gear 20 is accelerated, thereby accelerating the frequency of the reciprocation of the fur brush 5 and achieving a better acceleration effect.

In order to support the device, the support includes base 23 and branch 24, branch 24 has two, and two branches 24 set up respectively at the both ends of base 23, motor 12 and pivot 14 all set up on branch 24, the spout sets up on base 23.

For carrying out better spacing to the removal of carriage release lever 2, the one end that carriage release lever 2 is located the spout is equipped with slider 25, be equipped with the bar groove in the spout, slider 25 is located the bar inslot, slider 25 and bar groove sliding connection.

For carrying out better spacing to the removal of carriage release lever 2, slider 25 has two, and two sliders 25 set up respectively in the both sides of carriage release lever 2, the bar groove has two, and two sliders 25 are located two bar inslot respectively.

In order to enable air to enter the air bag 7 only through the air inlet pipe 8 and then to be discharged through the air outlet pipe 9, a one-way valve is arranged at the joint of the air inlet pipe 8 and the air bag 7, and a one-way valve is arranged at the joint of the air outlet pipe 9 and the air bag 7.

When the device is used, materials are placed on a belt 11, wherein a second spring 6 is in a deformation state, restoring force of the second spring 6 generates outward thrust to a push rod 4, the push rod 4 generates outward thrust to a brush 5, so that the brush 5 is always attached to the belt 11, the brush 5 is also attached to the belt 11 through the restoring force of the second spring 6, flexible thrust is adopted to avoid damage to the belt 11, a motor 12 is operated, the motor 12 drives a driving shaft 13 to rotate, the driving shaft 13 drives a rotating shaft 14 connected with the driving shaft to rotate, the rotating shaft 14 drives a roller 15 connected with the rotating shaft to rotate, the two rollers 15 tighten the belt 11, so that the movement of the belt 11 is realized under the action of friction force, so that the materials on the belt 11 are conveyed, the driving shaft 13 rotationally drives a large gear 16 connected with the driving shaft to rotate, the large gear 16 drives a small gear 17 to rotate, the pinion 17 drives the fixed shaft 18 to rotate, the fixed shaft 18 drives the rotating wheel 19 connected with the fixed shaft to rotate, the rotating wheel 19 drives the other rotating wheel 19 to rotate through the belt 11, the other rotating wheel 19 drives the positioning shaft 21 to rotate, the positioning shaft 21 drives the half gear 20 to rotate, when the half gear 20 is meshed with the rotating gear 22, the half gear 20 drives the rotating gear 22 to rotate, the rotating gear 22 drives the screw rod 1 to rotate, the screw rod 1 drives the moving rod 2 to move in a rotating way, the moving rod 2 drives the push rod 4 to move, the push rod 4 drives the brush 5 to move, the moving rod 2 moves to deform the first spring 3, when the half gear 20 is not meshed with the rotating gear 22, the moving rod 2 moves in a reverse direction under the restoring force of the first spring 3, so that the brush 5 moves in a reverse direction, the push rod 4 drives the brush 5 to move in a reverse direction, so that the brush 5 moves in a reciprocating way, and sand adhered on the belt 11 is treated, Dust and the like, thereby achieving a better cleaning effect, wherein the large gear 16 rotates for one circle to drive the small gear 17 to rotate for a plurality of circles, thereby accelerating the rotation of the small gear 17, thereby accelerating the rotation of the half gear 20, thereby accelerating the reciprocating frequency of the brush 5, thereby achieving a better accelerating effect, wherein the moving rod 2 moves to drive the sliding block 25 to move, the sliding block 25 is positioned in the strip-shaped groove, thereby enabling the sliding block 25 to move only along the axial direction of the strip-shaped groove, thereby limiting the movement of the sliding block 25, meanwhile, along with the movement of the moving rod 2, the moving rod 2 compresses the air bag 7, so that the air in the air bag 7 is pressed into the nozzle 10 through the air outlet pipe 9, and then is sprayed out through the nozzle 10, thereby enabling the sprayed air flow to blow down the dust on the belt 11, thereby achieving a better cleaning effect, when the moving rod 2 moves reversely, the air bag 7 is not blocked, and can be expanded again under the action of elastic restoring force, so that the external air enters the air bag 7 through the air inlet pipe 8 to be filled, the one-way valve on the air inlet pipe 8 can only admit air and cannot discharge air, the one-way valve on the air outlet pipe 9 can only discharge air and cannot discharge air, and the air can only enter the air bag 7 through the air inlet pipe 8 and is then discharged through the air outlet pipe 9.

Compared with the prior art, this belt conveyer with online clearance function, realize the transportation of material through transport mechanism, realize transport mechanism's cleanness through clean mechanism, compare with current belt 11 conveyer, the device passes through transport mechanism and clean mechanism's linkage, belt 11's online cleanness has been realized, and this linkage adopts pure mechanical structure, the stability and the life of device have been improved, compare with current clean mechanism, this mechanism brushes and carries out dual cleanness to belt 11 through 5 brushes of brush and jet-propelled mode, realize better clean effect, and adopt flexible thrust, avoid brush 5 to damage belt 11, realize the protection to belt 11.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The belt conveyor with the online cleaning function is characterized by comprising a support, a conveying mechanism and a cleaning mechanism, wherein the conveying mechanism is arranged on the support, and the cleaning mechanism is arranged on the conveying mechanism;

the cleaning mechanism comprises a moving assembly, a cleaning assembly and an air injection assembly, the moving assembly comprises a screw rod (1), a moving rod (2) and a first spring (3), a sliding groove is formed in the support, one end of the moving rod (2) is located in the sliding groove, the moving rod (2) is in sliding connection with the sliding groove, the first spring (3) is arranged in the sliding groove, one end of the first spring (3) is connected with the sliding groove, the other end of the first spring (3) is connected with the moving rod (2), the screw rod (1) is arranged on the support, the screw rod (1) penetrates through the moving rod (2), the screw rod (1) is in threaded connection with the moving rod (2), the cleaning assembly comprises a push rod (4), a brush (5) and a second spring (6), a groove is formed in the moving rod (2), one end of the push rod (4) is located in the groove, the other end of the push rod (4) extends out of the groove, the push rod (4) is connected with the groove in a sliding mode, the brush (5) is arranged at one end, located outside the groove, of the push rod (4), the brush (5) is abutted to the conveying mechanism, the second spring (6) is arranged in the groove, one end of the second spring (6) is connected with the groove, the other end of the second spring (6) is connected with the push rod (4), the air injection assembly comprises an air bag (7), an air inlet pipe (8), an air outlet pipe (9) and a nozzle (10), the air bag (7) is arranged in the sliding groove, the air bag (7) is located on one side, away from the first spring (3), of the moving rod (2), one end of the air bag (7) is connected with the sliding groove, the other end of the air bag (7) is connected with the moving rod (2), and the nozzle (10) is arranged under the conveying mechanism, the nozzle (10) is arranged opposite to the conveying mechanism, the air inlet pipe (8) and the air outlet pipe (9) are both arranged on the air bag (7), the air inlet pipe (8) and the air outlet pipe (9) are both communicated with the interior of the air bag (7), and the nozzle (10) is communicated with the interior of the air bag (7) through the air outlet pipe (9);

transport mechanism includes belt (11), drive assembly and transfer assembly, drive assembly includes motor (12) and drive shaft (13), motor (12) level sets up on the support, drive shaft (13) are installed on motor (12), transfer assembly includes two conveying unit, and two conveying unit set up respectively at the both ends of support, conveying unit includes pivot (14) and cylinder (15), pivot (14) set up on the support, cylinder (15) cover is established on pivot (14), cylinder (15) and pivot (14) key-type connection, and one of them pivot (14) sets up the one end of keeping away from motor (12) in drive shaft (13), pivot (14) are parallel with drive shaft (13), pivot (14) are connected with drive shaft (13) transmission, belt (11) cover is established on two cylinders (15) of two conveying unit, two cylinders (15) are connected through belt (11) transmission, brush (5) and belt (11) are close to one side of carriage release lever (2) and are leaned on, nozzle (10) just set up with belt (11).

2. The belt conveyor with the online cleaning function of claim 1, wherein the cleaning mechanism is provided with a linkage assembly, the linkage assembly comprises an accelerating unit and a rotating unit, the accelerating unit comprises a gear wheel (16), a pinion (17) and a fixed shaft (18), the gear wheel (16) is sleeved on the driving shaft (13), the gear wheel (16) is in key connection with the driving shaft (13), the fixed shaft (18) is arranged on one side of the driving shaft (13), the pinion (17) is sleeved on the fixed shaft (18), the pinion (17) is in key connection with the fixed shaft (18), the pinion (17) is meshed with the gear wheel (16), the rotating unit comprises a rotating wheel (19), a half gear (20), a positioning shaft (21) and a rotating gear (22), the positioning shaft (21) is arranged on one side of the screw rod (1), half gear (20) cover is established on location axle (21), half gear (20) and location axle (21) key-type connection, runner (19) have two, and two runner (19) overlap respectively and establish on fixed axle (18) and location axle (21), and two runner (19) connect with fixed axle (18) and location axle (21) key-type respectively, change gear (22) cover is established on lead screw (1), change gear (22) and lead screw (1) key-type connection, half gear (20) and change gear (22) meshing.

3. The belt conveyor with the online cleaning function as claimed in claim 1, wherein the support comprises a base (23) and two support rods (24), the two support rods (24) are respectively arranged at two ends of the base (23), the motor (12) and the rotating shaft (14) are both arranged on the support rods (24), and the sliding groove is arranged on the base (23).

4. The belt conveyor with the online cleaning function as claimed in claim 3, wherein a sliding block (25) is arranged at one end of the moving rod (2) in the sliding groove, a strip-shaped groove is arranged in the sliding groove, the sliding block (25) is arranged in the strip-shaped groove, and the sliding block (25) is connected with the strip-shaped groove in a sliding manner.

5. The belt conveyor with on-line cleaning function as claimed in claim 4, wherein there are two sliding blocks (25), two sliding blocks (25) are respectively arranged on both sides of the moving rod (2), there are two strip-shaped grooves, and two sliding blocks (25) are respectively positioned in the two strip-shaped grooves.

6. The belt conveyor with the online cleaning function as claimed in claim 1, wherein a one-way valve is arranged at the joint of the air inlet pipe (8) and the air bag (7), and a one-way valve is arranged at the joint of the air outlet pipe (9) and the air bag (7).