A cleaning structure for a belt conveyor

Abstract

The present invention discloses a cleaning structure for a belt conveyor, which includes a winding device, a feeding device and a scraper belt; the winding device and the feeding device are respectively installed on the frames on both sides of the belt conveyor; the middle part of the scraper belt is movably in contact with the belt of the belt conveyor, and its two end parts are respectively wound on the winding device and the feeding device. In the present invention, the scraper is designed as a strip-shaped scraper belt, and its two end parts are respectively wound by the winding device and the feeding device. The middle part between the winding device and the feeding device is in contact with the belt to clean the belt; when the part of the scraper belt in contact with the belt is severely worn, through the winding of the winding device, the old scraper belt can be retracted, and the new scraper belt sent out by the feeding device moves to the belt along with the retraction of the old scraper belt and continues to perform the cleaning work. There is no need to replace the scraper belt before the new scraper belt on the feeding device is used up, enabling the belt conveyor to operate for a long time and ensuring the conveying efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of belt conveyor cleaning, and particularly to a cleaning structure for a belt conveyor. Background Art

[0002] A belt conveyor, abbreviated as a belt machine, conveys various items of different weights through continuous or intermittent movement of a conveyor belt. It can convey various bulk materials as well as piece goods with a relatively small single-piece weight such as various cartons and packaging bags. Belt conveyors are widely used. In industry, they are commonly used to convey sand, coal cinder, etc. During use, there is a problem that materials adhere to the working surface of the belt, which affects the conveying efficiency.

[0003] In the prior art, generally a cleaner is provided on the surface of the belt conveyor to achieve the return cleaning of the belt conveyor. Currently, most cleaners install a scraper (or called a squeegee) at a fixed position on the surface of the return section of the belt. The residual materials are cleaned by the mutual friction between the scraper and the belt. Its disadvantages are as follows: After the scraper is worn due to long-term work, due to the action of the automatic compensation device of the existing cleaner, although the contact between the scraper and the belt can be maintained, the contact area between the two becomes larger due to the wear of the scraper, and then the cleaning effect drops rapidly. At this time, the scraper needs to be replaced. For safety reasons, the belt conveyor must stop working to replace the scraper, resulting in difficult scraper replacement and affecting production efficiency / production progress. Summary of the Invention

[0004] The purpose of the present invention is to provide a cleaning structure for a belt conveyor, which can ensure that the scraper is not replaced for a long time to ensure the long-term operation of the belt conveyor.

[0005] To achieve the above object, the solution of the present invention is:

[0006] A cleaning structure for a belt conveyor includes a winding device, a feeding device and a scraper belt; the winding device and the feeding device are respectively installed on the frames on both sides of the belt conveyor; the middle part of the scraper belt is in contact with the belt of the belt conveyor, and its two end parts are respectively wound around the winding device and the feeding device.

[0007] The winding device includes a motor and a winding rotating shaft. The motor is fixed on one of the frames, and the winding rotating shaft is coaxially connected to the output shaft of the motor.

[0008] The feeding device is a feeding rotating shaft rotatably fitted on the other frame.

[0009] The cleaning structure for a belt conveyor further includes a tensioning device for providing power to press the middle part of the scraper belt against the belt.

[0010] The described cleaning structure of a belt conveyor further includes a guide rail that movably cooperates with the scraper belt; at least one frame is equipped with the tensioning device, the guide rail is installed on the tensioning device, and is pressed against the belt under the action of the tensioning device; the middle part of the scraper belt is movably cooperated within the guide rail.

[0011] The described cleaning structure of a belt conveyor further includes a rotating screw, the guide rail is installed on the rotating screw, the end of the rotating screw is in transmission connection with the tensioning device, and the tensioning device is used to drive the rotating screw to rotate.

[0012] The tensioning device includes a first bracket, a clamp, a connecting rod and an elastic component; the first bracket is installed on the frame, and a cross arm is provided on its side; the clamp is coaxially connected to the end of the rotating screw, and a swing arm is provided on its side; the connecting rod is arranged on the side of the clamp, and its lower part is pivotally connected to the end of the cross arm; the elastic component is arranged on the upper part of the connecting rod and is pivotally connected to the swing arm, and the elastic component is used to drive the swing arm to swing downward; the elastic component includes an upper sleeve, a lower sleeve and a spring; the upper sleeve is sleeved and connected to the upper end of the connecting rod; the lower sleeve is sleeved on the connecting rod and is pivotally connected to the swing arm; the spring is arranged between the upper sleeve and the lower sleeve; the tensioning device further includes a second bracket and a transverse movement screw; a cross bar for the movable cooperation of the first bracket is provided on the second bracket; the transverse movement screw is threadedly connected and penetrates through the second bracket and is connected to the first bracket; a bearing for the movable penetration of the rotating screw is provided within the first bracket, the rotating screw penetrates through the bearing and is assembled with the clamp; a bushing for the movable penetration of the connecting rod is provided at the end of the cross arm, the bushing is rotatably connected to the end of the cross arm, and the connecting rod is threadedly connected to the bushing.

[0013] The described cleaning structure of a belt conveyor further includes an angular displacement sensor provided at one end of the rotating screw, and the angular displacement sensor is used to detect the rotation angle of the rotating screw and is linked with the winding device.

[0014] The guide rail is made of aluminum material, and a guide groove for the movable cooperation of the scraper belt is provided on the side facing the belt.

[0015] The part of the scraper belt located on the guide rail forms an 85° angle with the running direction of the belt of the belt conveyor.

[0016] After adopting the above technical solution, the present invention designs the scraper into a strip-shaped scraper belt, and both ends of the scraper belt are respectively wound by a winding device and a feeding device. The middle part located between the winding device and the feeding device contacts the belt to clean the belt; when the part of the scraper belt in contact with the belt wears seriously, through the winding of the winding device, the old scraper belt can be wound up, and the new scraper belt sent out by the feeding device moves to the belt as the old scraper belt is wound up, and continues to carry out the cleaning work. There is no need to replace the scraper belt before the new scraper belt on the feeding device is used up, so that the belt conveyor can run for a long time, ensuring the conveying efficiency; there is no need for manual replacement of the scraper during the operation of the equipment, saving labor costs. Brief Description of the Drawings

[0017] Figure 1 Is a perspective view of a specific embodiment of the present invention;

[0018] Figure 2 Is a front view of a specific embodiment of the present invention;

[0019] Figure 3 Is a top view of a specific embodiment of the present invention;

[0020] Figure 4 Is a left view of a specific embodiment of the present invention;

[0021] Figure 5 Is a right view of a specific embodiment of the present invention;

[0022] Figure 6 Is a partial enlarged view of a specific embodiment of the present invention;

[0023] Figure 7 Is a cross-sectional view of the tensioning device of a specific embodiment of the present invention;

[0024] Explanation of the reference numerals in the drawings:

[0025] 1----Winding device; 11---Motor; 12---Winding rotating shaft;

[0026] 2----Feeding device; 3----Tensioning device; 31---First bracket;

[0027] 311--Cross arm; 312--Bearing; 313--Bushing;

[0028] 32---Clamp; 321--Swing arm; 33---Link rod;

[0029] 34---Upper sleeve; 35---Lower sleeve; 36---Spring;

[0030] 37---Second bracket; 371--Cross bar; 38---Transverse movement screw;

[0031] 4 ---- Guide rail; 41 --- Guide groove; 5 ---- Scraping belt;

[0032] 6 ---- Frame; 7 ---- Belt; 8 ---- Rotating screw;

[0033] 9 ---- Angular displacement sensor. Specific implementation mode

[0034] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail below through specific embodiments.

[0035] The present invention is a cleaning structure for a belt conveyor, including a winding device 1, a feeding device 2 and a scraping belt 5;

[0036] The winding device 1 and the feeding device 2 are respectively installed on the frames 6 on both sides of the belt conveyor;

[0037] The middle part of the scraping belt 5 is in contact with the belt 7 of the belt conveyor, and its two end parts are respectively wound on the winding device 1 and the feeding device 2.

[0038] Through the above solution, in the present invention, the scraper is designed as a strip-shaped scraping belt 5, and its two end parts are respectively wound by the winding device 1 and the feeding device 2. The middle part between the winding device 1 and the feeding device 2 is in contact with the belt 7 to realize cleaning the belt 7; when the part of the scraping belt 5 in contact with the belt 7 is severely worn, through the winding of the winding device 1, the old scraping belt 5' can be taken up, and the new scraping belt 5" sent out by the feeding device 2 will move to the position of the belt 7 as the old scraping belt 5' is taken up and continue the cleaning work. Before the new scraping belt 5" on the feeding device 2 is used up, there is no need to replace the scraping belt 5, so that the belt conveyor can run for a long time and ensure the conveying efficiency; when the equipment is running, there is no need for manual replacement of the scraper, saving labor costs.

[0039] Reference Figures 1 to 7 As shown, the specific embodiment of the present invention is shown.

[0040] The above-mentioned winding device 1 includes a motor 11 and a winding rotating shaft 12. The motor 11 is fixed on one of the frames 6, and the winding rotating shaft 12 is coaxially connected to the output shaft of the motor 11, so that the motor 11 drives the winding rotating shaft 12 to rotate, thereby taking up the severely worn old scraping belt 5' and bringing the new scraping belt 5" into the belt conveyor. In this embodiment, the above-mentioned motor 11 is a servo motor, which can achieve precise torque output, so as to precisely control the length of the old scraping belt 5' taken up each time.

[0041] The above-mentioned feeding device 2 is a feeding rotating shaft rotatably fitted on another frame 6'. Since the power for the movement of the scraper belt 5 is provided by the winding device 1, the feeding device 2 only needs to fix the end of the scraper belt 5 and perform the driven function.

[0042] The present invention further includes a tensioning device 3 for providing power to press the middle part of the scraper belt 5 against the belt 7.

[0043] Further, the present invention further includes a guide rail 4 movably fitted with the scraper belt 5; at least one frame 6 is provided with the above-mentioned tensioning device 3, the guide rail 4 is installed on the tensioning device 3 and is pressed against the belt 7 under the action of the tensioning device 3; the middle part of the scraper belt 5 is movably fitted in the guide rail 4 to ensure that the scraper belt 5 is in contact with the belt 7 in real time and ensure the cleaning efficiency. When there is only one frame 6 provided with the tensioning device 3, the other end of the guide rail 4 should be rotatably fitted on the frame 6 without the tensioning device 3, and the guide rail 4 is swung towards the belt 7 (the way the tensioning device 3 drives the end of the guide rail 4 to move), or rotated towards the belt 7 (the way the tensioning device 3 drives the guide rail 4 to rotate) under the action of the tensioning device 3, so that the scraper belt 5 is pressed against the belt 7.

[0044] Further, two of the above-mentioned tensioning devices 3 are provided, that is, both frames 6 are provided with the tensioning device 3, and both ends of the guide rail 4 are installed on their respective corresponding frames 6 through the tensioning device 3. Compared with the case where only one tensioning device 3 is provided, both ends of the entire guide rail 4 can be stressed, so that the scraper belt 5 is pressed against the belt 7 more evenly, avoiding the situation where some positions are worn more severely.

[0045] The present invention further includes a rotating screw 8, the guide rail 4 is installed on the rotating screw 8, and the end of the rotating screw 8 is in transmission connection with the tensioning device 3. The tensioning device 3 is used to drive the rotating screw 8 to rotate so that the guide rail 4 drives the middle part of the scraper belt 5 to press against the belt 7.

[0046] Further, as shown in Figure 6 and Figure 7 shown, the above-mentioned tensioning device 3 includes a first bracket 31, a clamp 32, a connecting rod 33 and an elastic component; the first bracket 31 is installed on the frame 6, and a cross arm 311 is provided on its side; the clamp 32 is coaxially connected to the end of the rotating screw 8, and a swing arm 321 is provided on its side; the connecting rod 33 is provided on the side of the clamp 32, and its lower part is pivotally connected to the end of the cross arm 311; the elastic component is provided on the upper part of the connecting rod 33 and is pivotally connected to the swing arm 321. The elastic component is used to drive the swing arm 321 to swing downward so that the clamp 32 drives the rotating screw 8 and the guide rail 4 to rotate towards the belt 7.

[0047] In the above-described embodiment of the tensioning device 3, the elastic component includes an upper sleeve 34, a lower sleeve 35, and a spring 36; the upper sleeve 34 is sleeved and connected to the upper end of the connecting rod 33; the lower sleeve 35 is sleeved on the connecting rod 33 and pivotally engaged with the swing arm 321; the spring 36 is disposed between the upper sleeve 34 and the lower sleeve 35. Since the lower part of the connecting rod 33 is fixed and swingable relative to the first bracket 31, and the upper sleeve 34 is connected to the upper end of the connecting rod 33, the spring 36 always provides an elastic force to cause the lower sleeve 35 to move downward along the connecting rod 33, so that the swing arm 321 has a tendency to swing downward. When the part of the blade belt 5 in contact with the belt 7 wears, the swing of the swing arm 321 drives the rotary screw 8 to rotate, so that the blade belt 5 is kept in contact with the belt 7.

[0048] In the above-described embodiment of the tensioning device 3, the tensioning device 3 further includes a second bracket 37 and a transverse movement screw 38; a cross bar 371 for the first bracket 31 to movably cooperate is provided on the second bracket 37; the transverse movement screw 38 is threadedly connected and penetrates through the second bracket 37 and is connected to the first bracket 31. By turning the transverse movement screw 38, the lateral position of the first bracket 31 on the second bracket 37 can be adjusted, that is, the distance between the end of the rotary screw 8 and the belt 7 is adjusted, and finally the pressure of the blade belt 5 on the belt 7 is adjusted.

[0049] In the above-described embodiment of the tensioning device 3, a bearing 312 for the rotary screw 8 to movably pass through is provided in the first bracket 31, and the rotary screw 8 passes through the bearing 312 and is assembled with the clamp 32.

[0050] In the above-described embodiment of the tensioning device 3, a bushing 313 for the connecting rod 33 to movably pass through is provided at the end of the cross arm 311. The bushing 313 is rotatably engaged with the end of the cross arm 311 to adapt to the swing of the connecting rod 33 when the rotary screw 8 rotates. The connecting rod 33 is threadedly connected to the bushing 313, so that the height of the connecting rod 33 protruding upward from the bushing 313 is adjustable, improving the adaptability of the device to different usage scenarios.

[0051] Further, the present invention further includes an angular displacement sensor 9 provided at one end of the rotary screw 8. The angular displacement sensor 9 is used to detect the rotation angle of the rotary screw 8 and is linked with the winding device 1. When the detected rotation angle of the rotary screw 8 exceeds a preset threshold (such as 5°, the preset threshold is adjustable), the winding device 1 (i.e., the servo motor 11) is started to wind up and recycle the old blade belt 5' and bring the new blade belt 5" into the working position; after each cleaning, the deflection angle value of the angular displacement sensor is reset to zero. In addition, the angular displacement sensor 9 is generally linked with the winding device 1 through a central control system (or a single chip microcomputer with relevant judgment functions).

[0052] The above-described guide rail 4 is made of aluminum material, and a guide groove 41 for the blade belt 5 to movably cooperate is provided on one side facing the belt 7.

[0053] Both ends of the above-mentioned scraper belt 5 are respectively locked on the winding device 1 (i.e., the winding rotating shaft 12) and the feeding device 2 (i.e., the feeding rotating shaft) through bolts. The bolts locked on the winding device 1 can ensure that the winding device 1 can drive the scraper belt 5 to move when working, and then pull the new scraper belt 5' on the feeding device 2 to move to the position in contact with the belt 7. The bolts locked on the feeding device 2 can ensure that before the new scraper belt 5' is about to be used up, the scraper belt 5 can remain taut and in contact with the belt 7, avoiding the waste phenomenon caused by the loosening of the last section of the new scraper belt 5. In practical applications, the length of the scraper belt 5 can be customized according to the on-site space conditions. If conditions permit, the replacement cycle of the cleaning structure can be significantly reduced by increasing the length of the initial scraper belt 5, avoiding affecting the production progress.

[0054] See Figure 2 As shown, the part of the scraper belt 5 located on the guide rail 4 forms an 85° angle with the running direction of the belt 7 of the belt conveyor. When rubbing against the belt, the scraper belt 5 will receive a component force to the right (from Figure 2 the front view angle). Since the left end is wound and fixed by the servo motor 11, the part of the scraper belt 5 in contact with the belt 7 is in a taut state, ensuring that it will not curl due to slack or have a gap with the belt 7.

[0055] The above embodiments and diagrams do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention.

Claims

1. A cleaning structure for a belt conveyor, characterized in that: It includes a winding device, a feeding device, a scraper belt, a tensioning device, a guide rail and a rotating screw; The winding device and the feeding device are respectively installed on the frames on both sides of the belt conveyor; The middle part of the scraper belt is in contact with the belt of the belt conveyor, and its two end parts are respectively wound on the winding device and the feeding device; At least one frame is equipped with the tensioning device; the end of the rotating screw is in transmission connection with the tensioning device, and the tensioning device is used to drive the rotating screw to rotate; the guide rail is installed on the rotating screw, and the middle part of the scraper belt is movably fitted in the guide rail; The part of the scraper belt located on the guide rail forms an 85° angle with the running direction of the belt of the belt conveyor; The winding device includes a motor and a winding rotating shaft. The motor is fixed on one frame, and the winding rotating shaft is coaxially connected to the output shaft of the motor.

2. The cleaning structure for a belt conveyor according to claim 1, characterized in that: The feeding device is a feeding rotating shaft rotatably fitted on the other frame.

3. The cleaning structure for a belt conveyor according to claim 1, characterized in that: The tensioning device includes a first bracket, a clamp, a connecting rod and an elastic component; The first bracket is installed on the frame, and a cross arm is arranged on its side; The clamp is coaxially connected to the end of the rotating screw, and a swing arm is arranged on its side; The connecting rod is arranged on the side of the clamp, and its lower part is pivotally fitted with the end of the cross arm; The elastic component is arranged on the upper part of the connecting rod and is pivotally fitted with the swing arm. The elastic component is used to drive the swing arm to swing downward; The elastic component includes an upper sleeve, a lower sleeve and a spring; The upper sleeve is sleeved and connected to the upper end of the connecting rod; The lower sleeve is sleeved on the connecting rod and is pivotally fitted with the swing arm; The spring is arranged between the upper sleeve and the lower sleeve; The tensioning device further includes a second bracket and a transverse movement screw; A cross bar for the movable fit of the first bracket is arranged on the second bracket; The transverse movement screw is threadedly connected and penetrates through the second bracket and is connected to the first bracket; A bearing for the movable penetration of the rotating screw is arranged in the first bracket. The rotating screw penetrates through the bearing and is assembled with the clamp; A bushing for the movable penetration of the connecting rod is arranged at the end of the cross arm. The bushing is rotatably fitted with the end of the cross arm, and the connecting rod is threadedly connected to the bushing.

4. The cleaning structure for a belt conveyor according to claim 3, characterized in that: It also includes an angular displacement sensor arranged at one end of the rotating screw. The angular displacement sensor is used to detect the rotation angle of the rotating screw and is linked with the winding device.

5. The cleaning structure for a belt conveyor according to claim 3, characterized in that: The guide rail is made of aluminum material, and a guide groove for the movable fit of the scraper belt is arranged on the side facing the belt.

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