CN111014001A - Roller screen and material blocking prevention method of roller screen - Google Patents
Roller screen and material blocking prevention method of roller screen Download PDFInfo
- Publication number
- CN111014001A CN111014001A CN201911398765.4A CN201911398765A CN111014001A CN 111014001 A CN111014001 A CN 111014001A CN 201911398765 A CN201911398765 A CN 201911398765A CN 111014001 A CN111014001 A CN 111014001A
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- China
- Prior art keywords
- screen
- shaft
- sieve
- roller
- oil cylinder
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/12—Apparatus having only parallel elements
- B07B1/14—Roller screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
Abstract
The invention discloses a roller screen and a roller screen material blocking prevention method, wherein the roller screen comprises a rack, at least two screen shafts arranged on the rack, oil cylinders, bearings with slider seats, proximity switches and a control system, wherein the screen shafts are arranged in parallel side by side and can be driven to rotate in the same direction, two ends of each screen shaft are connected with one oil cylinder through the bearings with slider seats, and the oil cylinders can extend or shorten to drive the bearings with slider seats to slide along the horizontal direction of the rack; the proximity switches correspond to the bearings with the sliding block seats one by one and are arranged in an area for sensing the displacement signals of the bearings with the sliding block seats corresponding to the proximity switches; and the control system drives the oil cylinder to extend or shorten according to the signal of the proximity switch. When the position of the sieve shaft changes, the oil cylinder is controlled to extend or shorten to increase the size of the sieve hole, so that the blocked materials pass through the sieve hole, and the safe and continuous operation of the equipment is ensured.
Description
Technical Field
The invention relates to the field of material screening, in particular to a roller screen and a material blocking prevention method of the roller screen.
Background
In the material screening process, the materials need to be separated according to different sizes, and the roller screen is a common device and has the characteristics of high processing capacity, high screening efficiency and the like.
The roller screen is composed of a plurality of screen shafts, the gap between every two adjacent screen shafts is a screen hole, when the roller screen works, materials with the size smaller than the screen hole fall down from the screen hole, and materials with the size larger than the screen hole pass through the screen shafts, so that the materials are separated according to different sizes.
However, when the material has hard block-shaped objects with the size close to the size of the sieve holes, the hard block-shaped objects can not fall from the sieve holes and are easily blocked in the sieve holes, and the blocked material can be blocked when the blocked material can not be separated from the sieve holes. The hard blocky objects blocked can block the rotation of the adjacent sieve shaft, stop the machine and even cause the damage of a transmission part, influence the service life of the roller sieve, and the roller sieve can continue to work after the blocked hard blocky objects are cleaned, so that the equipment can not continuously run and the sieving process is influenced.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a roller screen and a roller screen material blocking prevention method, which aim to solve the blocking phenomenon in the working process of the roller screen.
In order to achieve the above object, an embodiment of the present invention provides a roller screen, which includes a frame, and at least two screen shafts disposed on the frame, wherein the screen shafts are disposed in parallel side by side and can be driven to rotate in the same direction, and the roller screen further includes: an oil cylinder, a bearing with a sliding block seat, a proximity switch and a control system,
the two ends of the sieve shaft are connected with one oil cylinder through the bearing with the sliding block seat, and the oil cylinder can extend or shorten to drive the bearing with the sliding block seat to slide along the horizontal direction of the rack;
the proximity switches correspond to the bearings with the sliding block seats one by one and are arranged in an area for sensing the displacement signals of the bearings with the sliding block seats corresponding to the proximity switches;
and the control system drives the oil cylinder to extend or shorten according to the signal of the proximity switch.
As a further improvement of an embodiment of the present invention, the bearing with a sliding block holder includes a first through hole, a second through hole, and a groove, the first through hole is perpendicular to the aperture direction of the second through hole, the screen shaft is rotatably mounted in the first through hole, and the groove is matched with the frame.
As a further improvement of an embodiment of the present invention, the cylinder includes a cylinder body and a push rod, the cylinder body is fixedly disposed on the same side of the bearing with the slider seat, one end of the push rod far away from the cylinder body is disposed in the second through hole in a threaded manner, and the push rod extends in a horizontal direction.
As a further improvement of an embodiment of the present invention, the roller screen further includes driving devices with the same number as the screen shafts, the driving devices correspond to the screen shafts one to one, and each driving device includes a coupler and a reduction motor, and the reduction motor is connected with one end of the screen shaft through the coupler.
As a further improvement of an embodiment of the present invention, the reduction motor is fixedly disposed on a moving plate, and the moving plate is slidably disposed on one side of the rack.
As a further improvement of an embodiment of the present invention, the roller screen further includes a material receiving device, the material receiving device includes an undersize material dropping tray, and the undersize material dropping tray is disposed below the screen shaft.
As a further improvement of an embodiment of the present invention, the screen shaft includes a screen shaft body and screen pieces disposed on the screen shaft body, the screen pieces are arranged in rows and the screen pieces adjacent to the screen shaft are staggered, and a distance between adjacent screen shaft bodies is greater than a length of the screen pieces.
In order to achieve the above object, an embodiment of the present invention provides a method for preventing material jamming of a roller screen, including:
and monitoring the position of a sieve shaft of the roller sieve, and controlling an oil cylinder matched with the sieve shaft to extend or shorten to enable two adjacent sieves to move in the direction away from each other when the position of the sieve shaft is changed.
As a further improvement of an embodiment of the present invention, the step of monitoring the position of the screen shaft of the roller screen specifically includes:
and monitoring the positions of the bearings with the sliding block seats at the two ends of the screen shaft through the proximity switches corresponding to the screen shaft.
As a further improvement of an embodiment of the present invention, the step of controlling the oil cylinder matched with the screen shaft to extend or shorten to move two adjacent screen shafts in a direction away from each other specifically includes:
and controlling the oil cylinder connected with one of the two adjacent sieve shafts to extend, and controlling the oil cylinder connected with the other sieve shaft to shorten.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the oil cylinders are arranged at the two ends of the sieve shaft, and when the position of the sieve shaft changes, the oil cylinders are controlled to extend or shorten to increase the size of the sieve pores, so that the blocked materials pass through the sieve pores, and the safe and continuous operation of the equipment is ensured.
Drawings
FIG. 1 is a schematic view of a roller screen according to one embodiment of the present invention;
FIG. 2 is a partial top view of a roller screen according to one embodiment of the present invention;
FIG. 3 is a side view of a roller screen according to one embodiment of the present invention;
fig. 4 is a schematic structural diagram of the cooperation of the oil cylinder and the bearing with the slider seat according to an embodiment of the present invention.
In the figure, a frame 1, a coupling 2, a speed reducing motor 3, a moving plate 4, a screen dropping tray 5, a slider seat bearing 6, a first through hole 601, a second through hole 602, a groove 603, a screen shaft 7, a screen shaft body 701, a screen sheet 702, a shell 8, an oil cylinder 9, a cylinder body 901 and a push rod 902.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
It should be noted that the terms "first" and "second" may be used to describe various elements or structures, but these described objects should not be limited by these terms, which are only used to distinguish these described objects from each other, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Referring to fig. 1 to 2, one embodiment of the present invention provides a roller screen, which includes a frame 1, at least two screen shafts 7 disposed on the frame, a driving device, an oil cylinder 9, a bearing with a slider seat 6, and a control system.
The sieve shafts 7 are arranged in parallel side by side and can be driven to rotate in the same direction, and the rotating direction is the same as the advancing direction of the materials. Specifically, the sieve shaft 7 comprises a sieve shaft body 701 and sieve sheets 702 arranged on the sieve shaft body, the sieve sheets 702 are arranged in rows and adjacent to the sieve shaft 7, the sieve sheets 702 are arranged in a staggered mode, the sieve sheets 702 stir materials to enable the materials to move along the sieve shaft body 701, and the materials smaller than sieve holes in the moving process fall from gaps of the sieve shaft body 701, so that the large-size materials and the small-size materials are separated.
Further, the distance between the adjacent screen shaft bodies 701 is greater than the length of the screen sheet 702, so that the screen sheets 702 of the adjacent two screen shafts 7 are prevented from interfering with each other when the screen shafts rotate, and sufficient space is provided for the screen shafts 7 to be able to move along the frame 1.
Two ends of the sieve shaft 7 are connected with one oil cylinder 9 through the bearing 6 with the sliding block seat, and the oil cylinder 9 can extend or shorten to drive the bearing 6 with the sliding block seat to slide along the horizontal direction of the rack 1.
Specifically, two ends of the screen shaft 7 are arranged on the bearings 6 with the sliding block seat, and each bearing 6 with the sliding block seat is connected with one oil cylinder 9, so that the oil cylinders 9 are arranged at two ends of the screen shaft 7 through the bearings 6 with the sliding block seat and are arranged on the same side of the bearing 6 with the sliding block seat.
The proximity switches correspond to the bearings 6 with the sliding block seats one by one, namely the proximity switches and the bearings 6 with the sliding block seats are the same in number, one proximity switch is correspondingly arranged on each bearing 6 with the sliding block seats, and each proximity switch is arranged in an area for sensing a displacement signal of the corresponding bearing 6 with the sliding block seats. The proximity switch is correspondingly arranged on each bearing 6 with the sliding block seat, the comprehensiveness of information can be guaranteed, and the position of any one end of the screen shaft 7 can be sensed when changed.
In other embodiments, the proximity switches may also be configured to sense a displacement signal of the oil cylinder 9, and when the proximity switches are configured to sense a signal of the oil cylinder 9, the number of the proximity switches is the same as that of the oil cylinder 9, and the proximity switches and the oil cylinder 9 correspond to each other one by one. The proximity switches are arranged on the rack 1, and each proximity switch is arranged in an area capable of sensing the corresponding oil cylinder 9.
The control system is connected with the proximity switch and the oil cylinder 9, and the control system drives the oil cylinder 9 to extend or shorten according to signals of the proximity switch, so that the purpose of adjusting the distance between the sieve shafts 7 according to the working condition of the roller sieve is achieved.
Preferably, the roller screen further comprises a material receiving device, the material receiving device comprises a screen falling material tray 5, the screen falling material tray 5 is arranged below the screen shaft 7 and extends along the material running direction, materials falling from the screen holes are collected in a centralized mode, and an oversize material falling material tray can be further arranged at the tail end of the material advancing direction and is used for collecting the materials passing through the screen shaft 7.
Further, the driving devices are the same in number as the screen shafts 7 and are in one-to-one correspondence with the screen shafts 7, and the screen shafts 7 rotate in the same direction under the driving of the driving devices, that is, each screen shaft 7 is driven to rotate by the corresponding driving device. When the sieve shaft 7 moves, the driving device still drives the sieve shaft 7 to rotate, and the sieving process is not influenced.
Specifically, drive arrangement includes shaft coupling 2, gear motor 3 passes through shaft coupling 2 with the one end of sieve axle 7 is connected.
The speed reducing motor 3 is fixedly arranged on the moving plate 4, the moving plate 4 is arranged on one side of the rack 1 in a sliding mode, the moving plate 4 plays a role in supporting the speed reducing motor 3, the speed reducing motor 3 is connected with one end of the sieve shaft 7, the speed reducing motor 3 can move together when the sieve shaft 7 moves, the moving plate 4 is driven by the speed reducing motor 3 to slide along the rack 1, and the speed reducing motor 3 is supported in the sliding process.
Further, the upper portion of the sieve shaft 7 and two ends of the sieve shaft 7 are provided with a shell 8, the shell 8 covers the rack 1, the shell 8 enables the roller screen to be overall attractive, and materials can be prevented from falling off from two ends of the sieve shaft 7 in the sieving process.
Referring to fig. 3, the slider block bearing includes a first through hole 601, a second through hole 602, and a groove 603. The first through hole 601 is perpendicular to the aperture direction of the second through hole 602, the sieve shaft 7 is rotatably installed in the first through hole 601, the groove 603 is matched with the frame 1, and the groove 603 can slide along the frame 1.
Further, the cylinder 9 includes a cylinder 901 and a push rod 902, the cylinder 901 is fixed to the frame 1 and disposed on the same side of the bearing 6 with the sliding block seat, one end of the push rod 902 far away from the cylinder 901 is disposed in the second through hole 602 in a threaded manner, and the push rod 902 extends in a horizontal direction to push the groove 603 to slide along the horizontal direction of the frame 1 matching therewith.
Referring to fig. 4, seventeen screen shafts 7 are provided in the present embodiment, and the seventeen screen shafts 7 can screen the material multiple times to completely screen the material, and can increase the screening speed when the material amount is large.
The seventeen sieve shafts 7 are in the same horizontal height, and in other embodiments, the height of the sieve shafts 7 is gradually increased in the material advancing direction and along with the material advancing, namely, the sieve shafts are obliquely and upwards arranged at a certain angle along with the material moving direction. The horizontal heights of the sieve shafts are consistent or the sieve shafts are inclined upwards to ensure that materials with the sizes smaller than the sieve holes are sieved out, and the situation that the materials with the sizes smaller than the sieve holes rapidly pass through the sieve shafts 7 under the action of gravity to cause incomplete sieving is avoided.
An embodiment of the invention provides a roller screen material blocking prevention method, which comprises the following steps:
the method comprises the steps of monitoring the position of a sieve shaft 7 of the roller sieve, and controlling an oil cylinder 9 matched with the sieve shaft 7 to extend or shorten to enable two adjacent sieve shafts 7 to move in the direction away from each other when the position of the sieve shaft 7 changes.
It can be understood that, when the roller screen operates, the thrust of the oil cylinder 9 can ensure that the position of the screen shaft 7 does not change under the condition of no blockage, that is, the position of the screen shaft 7 relative to the frame 1 does not change, so that the roller screen operates normally. However, when a blockage occurs between adjacent screen shafts 7 and the blocking force generated by the blockage is large, the blockage can move the screen shafts 7, but the blockage can not move the screen shafts 7 to a sufficient degree to drop the screen shafts 7 from the gaps of the screen shafts 7. Thus, the position of the screen shafts 7 is monitored during operation of the roller screen, and when the position of the screen shafts 7 changes, it is indicated that there is a jam between the screen shafts 7 that has changed at that time.
The two ends of the sieve shaft 7 are connected with the oil cylinders 9, the oil cylinders 9 can change the positions of the two ends of the sieve shaft by extending or shortening, so that the positions of the sieve shaft 7 are changed, after the two adjacent sieve shafts 7 are controlled to move towards the directions away from each other, the distance between the sieve shafts 7 can be increased, namely the size of sieve holes is increased, blocking materials between the sieve shafts 7 can pass through the sieve holes, and the safe and continuous operation of equipment is guaranteed.
In a specific embodiment, the step of monitoring the position of the screen shaft 7 of the roller screen specifically comprises:
the positions of the bearings 6 with the sliding block seats at the two ends of the sieve shaft 7 are monitored through a proximity switch corresponding to the sieve shaft 7.
The two ends of the screen shaft 7 are arranged in the bearings 6 with the sliding block seats, the position change of the screen shaft 7 corresponds to the position change of the bearings 6 with the sliding block seats at the two ends, and whether the position of the screen shaft 7 changes or not can be reflected by monitoring the positions of the bearings 6 with the sliding block seats at the two ends of the screen shaft 7 through the proximity switches corresponding to the screen shaft 7. Here, the proximity switch is a displacement sensor that senses the displacement of the bearing 6 without directly contacting the bearing 6, and the position of the bearing 6 can be determined by sensing the displacement of the bearing 6 through the proximity switch.
In a specific embodiment, the step of controlling the oil cylinder 9 matched with the screen shaft 7 to extend or contract to move two adjacent screen shafts 7 in a direction away from each other specifically comprises:
and controlling the oil cylinder 9 connected with one of the two adjacent sieve shafts 7 to extend, and controlling the oil cylinder 9 connected with the other sieve shaft to shorten.
The oil cylinders are arranged on the same side of the sieve shafts, and in order to enable two adjacent sieve shafts to move in a direction away from each other, the four oil cylinders 9 connected with the two sieve shafts 7 at the blocking position are driven to work synchronously, specifically, the two oil cylinders 9 connected with one sieve shaft 7 perform an extending action, and the two oil cylinders 9 connected with the other sieve shaft 7 perform a shortening action, so that the distance between the two sieve shafts 7 is rapidly increased, and the blocking materials between the sieve shafts 7 fall rapidly.
The detailed description set forth above is merely a specific description of possible embodiments of the present invention and is not intended to limit the scope of the invention, which is intended to include within the scope of the invention equivalent embodiments or modifications that do not depart from the technical spirit of the present invention.
Claims (10)
1. The utility model provides a roller screen, includes the frame, sets up two at least sieve axles in the frame, sieve axle parallel arrangement side by side and can be driven corotation, its characterized in that, roller screen still includes: an oil cylinder, a bearing with a sliding block seat, a proximity switch and a control system,
the two ends of the sieve shaft are connected with one oil cylinder through the bearing with the sliding block seat, and the oil cylinder can extend or shorten to drive the bearing with the sliding block seat to slide along the horizontal direction of the rack;
the proximity switches correspond to the bearings with the sliding block seats one by one and are arranged in an area for sensing the displacement signals of the bearings with the sliding block seats corresponding to the proximity switches;
and the control system drives the oil cylinder to extend or shorten according to the signal of the proximity switch.
2. A roller screen according to claim 1, wherein the roller bearing comprises a first through hole, a second through hole and a recess, the first through hole being oriented perpendicular to the second through hole, the screen shaft being rotatably mounted in the first through hole, the recess being adapted to the frame.
3. The roller screen according to claim 2, wherein the cylinder comprises a cylinder body and a push rod, the cylinder body is fixedly arranged on the same side of the bearing with the sliding block seat, one end of the push rod far away from the cylinder body is arranged in the second through hole in a threaded manner, and the push rod extends in the horizontal direction.
4. The roller screen according to claim 1, further comprising a driving device with the same number as the screen shafts, wherein the driving device corresponds to the screen shafts one to one and comprises a coupler and a speed reduction motor, and the speed reduction motor is connected with one end of the screen shaft through the coupler.
5. A roller screen according to claim 4, characterized in that said gear motor is fixedly arranged on a mobile plate, said mobile plate being slidingly arranged on one side of said frame.
6. The roller screen of claim 1, further comprising a receiving device, wherein the receiving device includes an undersize drop tray disposed below the screen shaft.
7. The roller screen of claim 1, wherein the screen shaft includes a screen shaft body and screen pieces disposed on the screen shaft body, the screen pieces are arranged in rows and staggered with respect to the screen pieces of the screen shaft, and the distance between adjacent screen shaft bodies is greater than the length of the screen pieces.
8. A roller screen material blocking prevention method is characterized by comprising the following steps:
and monitoring the position of a sieve shaft of the roller sieve, and controlling an oil cylinder matched with the sieve shaft to extend or shorten to enable two adjacent sieves to move in the direction away from each other when the position of the sieve shaft is changed.
9. The roller screen material jamming prevention method according to claim 8, wherein the step of monitoring the screen shaft position of the roller screen specifically comprises:
and monitoring the positions of the bearings with the sliding block seats at the two ends of the screen shaft through the proximity switches corresponding to the screen shaft.
10. The method for preventing the material jamming of the roller screen according to claim 8, wherein the step of controlling the extension or the contraction of the oil cylinder matched with the screen shaft to move the two adjacent screens in the direction in which the shafts are away from each other specifically comprises the steps of:
and controlling the oil cylinder connected with one of the two adjacent sieve shafts to extend, and controlling the oil cylinder connected with the other sieve shaft to shorten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911398765.4A CN111014001A (en) | 2019-12-30 | 2019-12-30 | Roller screen and material blocking prevention method of roller screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911398765.4A CN111014001A (en) | 2019-12-30 | 2019-12-30 | Roller screen and material blocking prevention method of roller screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111014001A true CN111014001A (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911398765.4A Pending CN111014001A (en) | 2019-12-30 | 2019-12-30 | Roller screen and material blocking prevention method of roller screen |
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| Country | Link |
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| CN (1) | CN111014001A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940288A (en) * | 2020-07-13 | 2020-11-17 | 中国矿业大学 | Control system and method for realizing adaptive horizontal equal-thickness screening of roller screen |
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| CN107377494A (en) * | 2017-07-27 | 2017-11-24 | 江苏力星通用钢球股份有限公司 | A kind of accurate steel balls automatic polishing technique |
| CN109894347A (en) * | 2019-03-15 | 2019-06-18 | 安徽华星选矿科技有限公司 | A kind of sine roller picker structural assembly and its intelligent anti-blocking monitoring system |
| CN110479573A (en) * | 2019-08-09 | 2019-11-22 | 张元才 | Foreign matter sorting unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203917100U (en) * | 2014-05-28 | 2014-11-05 | 宣化钢铁集团有限责任公司 | A kind of roll screen that can adjust online roller spacing |
| CN205517939U (en) * | 2016-01-29 | 2016-08-31 | 肇庆市新荣昌工业环保有限公司 | Old and useless circuit board is retrieved with roll -in formula breaker |
| CN105710027A (en) * | 2016-04-26 | 2016-06-29 | 苏州嘉之诺资源装备制造有限公司 | Domestic garbage screening device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111940288A (en) * | 2020-07-13 | 2020-11-17 | 中国矿业大学 | Control system and method for realizing adaptive horizontal equal-thickness screening of roller screen |
| CN111940288B (en) * | 2020-07-13 | 2022-05-13 | 中国矿业大学 | Control equipment and method for realizing adaptive horizontal equal-thickness screening of roller screen |
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Application publication date: 20200417 |
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