CN214454560U - Chain breakage protection device of chain sweeper, chain sweeper and coal feeder - Google Patents
Chain breakage protection device of chain sweeper, chain sweeper and coal feeder Download PDFInfo
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- CN214454560U CN214454560U CN202022706154.6U CN202022706154U CN214454560U CN 214454560 U CN214454560 U CN 214454560U CN 202022706154 U CN202022706154 U CN 202022706154U CN 214454560 U CN214454560 U CN 214454560U
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- sweeper
- electromagnetic proximity
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Abstract
The utility model provides a chain-breaking protection device, chain scavenging machine and coal feeder of chain scavenging machine should break chain protection device and include: the device comprises an extension shaft, a detection sheet and an electromagnetic proximity switch; the extension shaft is arranged outside the shell of the chain sweeper and fixedly connected with a driven shaft of the chain sweeper through the shell; the first end face of the extension shaft is fixedly connected with the end face of the driven shaft, and the second end face of the extension shaft is fixedly connected with the detection sheet; the electromagnetic proximity switch and the detection sheet are oppositely arranged at intervals and are connected with a driving motor of the chain sweeper through a signal line; the extension shaft drives the detection piece to rotate, and the detection piece is close to and away from the electromagnetic proximity switch periodically. The embodiment prevents chain breakage protection misoperation and avoids the coal feeder from being forced to stop operation accidents, improves the operation safety of the boiler, can perform online processing without stopping the coal feeder when the electromagnetic proximity switch fails, and improves the production efficiency.
Description
Technical Field
The utility model relates to a coal feeder technical field particularly, relates to a chain breakage protection device, chain scavenging machine and coal feeder of chain scavenging machine.
Background
The belt for weighing the coal feeder conveys coal of a raw coal hopper to the coal mill, but the two sides of the belt often have coal blocks to drop, so that the belt is easily damaged, and the belt below of the weighing coal feeder is frequently adopted to be provided with a chain sweeper to sweep the fallen coal blocks.
The chain sweeper comprises a driving roller and driving gears fixed at two ends of the driving roller, a driven roller and driven gears fixed at two ends of the driven roller, chains are sleeved between the corresponding driving gears and the corresponding driven gears, a sweeping scraper is fixed between the two chains, the driving gears are driven to rotate through a driving motor, and then the sweeping scraper is driven to rotate to sweep fallen coal blocks. During cleaning, a chain is easy to break, and generally a chain breakage protection device is equipped, generally the chain breakage protection device is a detection sheet fixed on a built-in driven shaft of a coal feeder and an electromagnetic proximity switch used for receiving a pulse signal, and the electromagnetic proximity switch sends a stop signal to a driving motor to control the driving motor to stop rotating when not receiving the pulse signal within a specified time.
However, the coal blocks falling from the weighing coal feeder easily block the signal transmission between the detection sheet and the electromagnetic proximity switch, so that pulse signals are lost, the chain breakage protection is misoperated, the chain breakage fault is frequently reported by mistake, the cleaning chain of the coal feeder cannot be normally started, the coal feeder is stopped, and the boiler operation safety is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a chain sweeper misreport broken chain trouble frequently send out and lead to the feeder to shut down, seriously influences the problem of boiler operation safety.
In order to solve the above problem, the embodiment of the present invention is implemented as follows:
an embodiment of the utility model provides a chain sweeper's broken chain protection device, include: the device comprises an extension shaft, a detection sheet and an electromagnetic proximity switch; the extension shaft is arranged on the outer side of a shell of the chain sweeper and penetrates through the shell to be fixedly connected with a driven shaft of the chain sweeper; the first end face of the extension shaft is fixedly connected with the end face of the driven shaft, and the second end face of the extension shaft is fixedly connected with the detection sheet; the electromagnetic proximity switch and the detection sheet are oppositely arranged at intervals and are connected with a driving motor of the chain sweeper through a signal line; the extension shaft drives the detection piece to rotate, and the detection piece is close to and away from the electromagnetic proximity switch periodically.
Optionally, the housing further comprises a sealing element, the sealing element is mounted between the extension shaft and the driven shaft, and is used for sealing the driven shaft and the housing.
Optionally, the detection piece is a fan-shaped metal piece, and the fan-shaped metal piece is perpendicular to the extension shaft and is fixedly connected with the extension shaft.
Optionally, the electromagnetic proximity switch is disposed perpendicular to the fan-shaped metal sheet.
Optionally, the sealing element further comprises an electromagnetic proximity switch fixing element, one end of the electromagnetic proximity switch fixing element is connected with the electromagnetic proximity switch, and the other end of the electromagnetic proximity switch fixing element is fixed to the sealing element.
The embodiment of the utility model provides a chain sweeper, which comprises a shell, a driven shaft and the chain breakage protection device, wherein a chain is sleeved between the corresponding driving gear and the driven gear; the extension shaft penetrates through the shell and is fixedly connected with the driven shaft.
Optionally, the chain transmission mechanism further comprises a driving shaft, driving gears and driven gears, wherein the driving gears are fixed at two ends of the driving shaft, the driven gears are fixed at two ends of the driven shaft, and chains are sleeved between the driving gears and the driven gears corresponding to the two ends.
Optionally, a sweeping scraper is fixedly connected between the two chains.
An embodiment of the utility model provides a coal feeder, including above-mentioned chain scavenging machine.
Optionally, the chain sweeper further comprises a belt, and the chain sweeper is arranged below the belt.
According to the chain breakage protection device of the chain sweeper, the built-in driven shaft of the coal feeder is led out of the coal feeder through the extension shaft and is extended, the detection piece fixed on the extension shaft and the electromagnetic proximity switch used for receiving pulse signals can avoid coal blocks and the like from interfering signal transmission between the detection piece and the electromagnetic proximity switch, so that chain breakage protection misoperation is prevented, forced shutdown accidents of the coal feeder are avoided, the operation safety of a boiler is improved, online processing can be carried out without stopping the coal feeder when the electromagnetic proximity switch fails, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a side view of a chain breakage protection device of a chain sweeper in an embodiment of the present invention;
fig. 2 is an installation diagram of an extension shaft and a detection piece of the chain breakage protection device in an embodiment of the present invention;
fig. 3 is a front view of the chain breakage protection device of the chain sweeper in the embodiment of the present invention.
Description of reference numerals:
101-a driven shaft; 102-an elongate shaft; 103-detection piece; 104-an electromagnetic proximity switch; 105-a housing; 106-a seal; 107-electromagnetic proximity switch mount; 108-signal lines.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a chain-breaking protection device of a chain sweeper, comprising: extension axle, detection piece and electromagnetism proximity switch.
The extension shaft is arranged on the outer side of the shell of the chain sweeper and fixedly connected with a driven shaft of the chain sweeper through the shell. The built-in driven shaft of the chain sweeper is led out of the coal feeder through the extension shaft and extends properly, so that whether the driven shaft normally rotates or not can be monitored on the outer side of the coal feeder shell, and signal transmission between the coal block and coal powder blocking detection piece and the electromagnetic proximity switch in the coal feeder shell is avoided.
Specifically, the first end face of the extension shaft is fixedly connected with the end face of the driven shaft, and the second end face of the extension shaft is fixedly connected with the detection sheet. It can be understood that the driven shaft rotates to drive the extension shaft to synchronously rotate, thereby facilitating the monitoring of the rotation state of the driven shaft.
The electromagnetic proximity switch and the detection sheet are oppositely arranged at intervals and are connected with a driving motor of the chain sweeper through a signal line; the extension shaft drives the detection piece to rotate, and the detection piece is close to and away from the electromagnetic proximity switch periodically. When the detection piece rotates to approach the electromagnetic proximity switch, the pulse signal is received, in the process of extending shaft rotation, the detection piece periodically approaches to and is far away from the electromagnetic proximity switch, and the electromagnetic proximity switch periodically receives the pulse signal. When the electromagnetic proximity switch does not receive the pulse signal within the specified time, a stop signal can be sent to the driving motor to control the driving motor to stop rotating.
According to the chain breakage protection device of the chain sweeper, the built-in driven shaft of the coal feeder is led out of the coal feeder through the extension shaft and is extended, the detection piece fixed on the extension shaft and the electromagnetic proximity switch used for receiving pulse signals can avoid coal blocks and the like from interfering signal transmission between the detection piece and the electromagnetic proximity switch, so that chain breakage protection misoperation is prevented, forced shutdown accidents of the coal feeder are avoided, the operation safety of a boiler is improved, online processing can be carried out without stopping the coal feeder when the electromagnetic proximity switch fails, and the production efficiency is improved.
Optionally, the chain breakage protection device further includes a sealing element, and the sealing element is installed between the extension shaft and the driven shaft and used for sealing the driven shaft and the housing.
Optionally, the detecting plate is a fan-shaped metal plate, and the fan-shaped metal plate is fixedly connected perpendicular to the extending shaft. The electromagnetic proximity switch is arranged perpendicular to the fan-shaped metal sheet.
Optionally, the chain breakage protection device further includes an electromagnetic proximity switch fixing member, one end of the electromagnetic proximity switch fixing member is connected to the electromagnetic proximity switch, and the other end of the electromagnetic proximity switch fixing member is fixed to the sealing member.
Referring to fig. 1, a side view of the chain breakage protection device of the chain sweeper shows a driven shaft 101, an extension shaft 102, a detection piece 103, an electromagnetic proximity switch 104, and a housing 105 of the chain sweeper.
The driven shaft 101 is fixedly connected with the extension shaft 102, and the extension shaft 102 extends to the outside through the housing 105. The end surface outside the extension shaft 102 is connected to a detection piece 103, and both are fixed vertically.
Wherein the extension shaft 102 is fixed on the housing 105 by a sealing member 106, and the sealing member 106 is used for sealing the driven shaft and the housing to prevent coal dust from overflowing.
The electromagnetic proximity switch 104 is disposed opposite to the detection piece 103 at an interval, connected to the sealing member 106 via an electromagnetic proximity switch fixing member 107, and connected to a drive motor of the chain sweeper via a signal line 108. And when the electromagnetic proximity switch does not receive the pulse signal within the specified time, the electromagnetic proximity switch sends a stop signal to the driving motor to control the driving motor to stop rotating. As shown in fig. 1, the electromagnetic proximity switch 104 is disposed to be offset from the end surface of the extension shaft 102.
Referring to fig. 2, an installation diagram of an extension shaft and a detection piece of the chain breakage protection device is shown, wherein the detection piece 103 is a fan-shaped metal piece, and periodically approaches and departs from the electromagnetic proximity switch during rotation of the extension shaft 102.
Referring to the front view of the chain break protection device of the chain sweeper shown in FIG. 3, there are shown an electromagnetic proximity switch 104, a sensing piece 103, a seal 106, an electromagnetic proximity switch mount 107, and a signal wire 108.
The embodiment provides a chain sweeper, which comprises a shell, a driven shaft and the chain breakage protection device, wherein a chain is sleeved between a corresponding driving gear and a corresponding driven gear; the extension shaft passes through the shell and is fixedly connected with the driven shaft.
The chain sweeper provided by the embodiment has the advantages that the built-in driven shaft of the coal feeder is led out of the coal feeder through the extension shaft and is extended, the detection piece fixed on the extension shaft and the electromagnetic proximity switch used for receiving pulse signals can avoid coal blocks and the like from interfering signal transmission between the detection piece and the electromagnetic proximity switch, so that chain breakage protection misoperation and forced shutdown accidents of the coal feeder are avoided, the operation safety of a boiler is improved, the coal feeder can be processed on line without stopping the coal feeder when the electromagnetic proximity switch fails, and the production efficiency is improved.
Optionally, the chain sweeper further comprises a driving shaft, driving gears fixed at two ends of the driving shaft, and driven gears fixed at two ends of the driven shaft, wherein a chain is sleeved between the driving gears and the driven gears corresponding to the two ends.
Optionally, a sweeping scraper is fixedly connected between the two chains. The feeder cleaning chain is typically mounted on the lower portion of the weighing feeder. The coal feeder cleaning chain consists of a cleaning motor, a speed reducer, a chain, a scraper blade, electric power and a control loop.
The power supply for cleaning the coal feeder and the main motor of the coal feeder are generally one path of power supply, and are respectively controlled by an air switch after being sent into the local control cabinet through a power cable. When the main motor of the coal feeder is started, the cleaning motor is also started, the chain drives the scraper to rotate, the rotation direction of the scraper is opposite to the rotation direction of the belt of the coal feeder, and coal accumulated at the bottom of the coal feeder and scattered coal are scraped into the coal mill by the scraper, so that the normal operation of the coal feeder is ensured.
The embodiment provides a coal feeder which comprises the chain sweeping machine.
Optionally, the coal feeder further comprises a belt, the chain sweeper being disposed below the belt.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A chain breakage protection device of a chain sweeper is characterized by comprising: the device comprises an extension shaft, a detection sheet and an electromagnetic proximity switch;
the extension shaft is arranged on the outer side of a shell of the chain sweeper and penetrates through the shell to be fixedly connected with a driven shaft of the chain sweeper;
the first end face of the extension shaft is fixedly connected with the end face of the driven shaft, and the second end face of the extension shaft is fixedly connected with the detection sheet;
the electromagnetic proximity switch and the detection sheet are oppositely arranged at intervals and are connected with a driving motor of the chain sweeper through a signal line;
the extension shaft drives the detection piece to rotate, and the detection piece is close to and away from the electromagnetic proximity switch periodically.
2. The chain breakage protection device of claim 1 further comprising a seal mounted between the extension shaft and the driven shaft for sealing the driven shaft and the housing.
3. The chain breakage protection device of claim 1, wherein the detection piece is a fan-shaped metal piece fixedly connected perpendicular to the extension shaft.
4. The chain breakage protection device of claim 3, wherein the electromagnetic proximity switch is disposed perpendicular to the fan-shaped metal sheet.
5. The device of claim 2, further comprising an electromagnetic proximity switch mount, wherein one end of the electromagnetic proximity switch mount is connected to the electromagnetic proximity switch and the other end of the electromagnetic proximity switch mount is fixed to the sealing member.
6. A chain sweeper, comprising a housing, a driven shaft and a chain breakage protection device as claimed in any one of claims 1 to 5; the chain transmission mechanism further comprises a driving shaft, driving gears and driven gears, wherein the driving gears are fixed at two ends of the driving shaft, the driven gears are fixed at two ends of the driven shaft, and chains are sleeved between the driving gears and the driven gears corresponding to the two ends;
the extension shaft penetrates through the shell and is fixedly connected with the driven shaft.
7. The chain sweeper of claim 6, wherein a sweeping shoe is fixedly attached between the two chains.
8. A coal feeder, characterized by comprising the chain sweeper of any one of claims 6-7.
9. The coal feeder of claim 8, further comprising a belt, the chain sweeper being disposed below the belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022706154.6U CN214454560U (en) | 2020-11-20 | 2020-11-20 | Chain breakage protection device of chain sweeper, chain sweeper and coal feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022706154.6U CN214454560U (en) | 2020-11-20 | 2020-11-20 | Chain breakage protection device of chain sweeper, chain sweeper and coal feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214454560U true CN214454560U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022706154.6U Active CN214454560U (en) | 2020-11-20 | 2020-11-20 | Chain breakage protection device of chain sweeper, chain sweeper and coal feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214454560U (en) |
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- 2020-11-20 CN CN202022706154.6U patent/CN214454560U/en active Active
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