CN210102757U - Chain breakage detection device for double-scraper chain embedded scraper coal feeder - Google Patents
Chain breakage detection device for double-scraper chain embedded scraper coal feeder Download PDFInfo
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- CN210102757U CN210102757U CN201920680612.8U CN201920680612U CN210102757U CN 210102757 U CN210102757 U CN 210102757U CN 201920680612 U CN201920680612 U CN 201920680612U CN 210102757 U CN210102757 U CN 210102757U
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Abstract
The utility model provides a chain breakage detection device for a double-scraper chain buried scraper coal feeder, which comprises a shell fixedly arranged at the top of the double-scraper chain buried scraper coal feeder; the connecting rod is arranged above the scraper through bearings fixed on two inner side walls of the shell, and the connecting rod and the scraper are arranged in parallel; the poking plate is fixedly connected and connected with the connecting rod through a screw rod which is vertically arranged in a normal state, the axis of the screw rod is vertically and fixedly arranged with the axis of the connecting rod, and the other end of the screw rod is fixedly provided with a poking rod for touching the scraping plate; the induction rod is vertically and fixedly arranged on the connecting rod; and the proximity switch is matched with the induction rod and is arranged on the inner side wall of the shell in an alignment mode. Use the utility model discloses the cracked condition of chain takes place when can accurately in time detecting production, guarantees to produce and goes on smoothly.
Description
Technical Field
The utility model relates to an auxiliary detection device for buried scraper conveyor, especially a chain detection device that buried scraper feeder used.
Background
Circulating fluidized bed boilers are the main equipment of thermal power plants, and according to the coal feeding characteristics of the circulating fluidized bed boilers, the conveying of materials is generally performed using an embedded scraper feeder, which is a transportation device that transports the bulk materials to a predetermined target by means of scraper chains moving in a closed housing. The weighed discrete coal is conveyed to a hearth according to a preset target, the buried scraper coal feeder drives a conveying belt to convey the materials through a motor matched with a driving chain wheel, a driven chain wheel and a chain, and if the chain is broken or detached, the scraper conveyor stops conveying and cannot normally convey the materials.
In order to keep the coal feeding system running stably, attention needs to be paid to the state of the chain all the time to prevent the chain from being disconnected. At present, most of chain breakage detection devices on the market are provided with driven wheels, the running condition of the driven wheels is detected to judge whether chain breakage exists, the mode has a certain effect, but during actual production, a coal feeding port is sometimes arranged at a position far away from a coal feeder, at the moment, a long scraper double-scraper chain is needed to be used for burying the scraper coal feeder, and the double-scraper chain cannot be provided with a driven wheel device, so that the detection mode cannot be used. The other detection method is that a proximity switch is arranged at the top of the buried scraper coal feeder to monitor whether the scraper chain is broken, but the problem of abrasion of the proximity switch can occur due to the fact that the working condition in the scraper is severe, and due to the fact that the conveying capacity is large, pulverized coal can cover the chain or be attached to the proximity switch, and the chain breakage condition cannot be timely and accurately detected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a broken chain detection device for two scraper chain buried scraper coal feeders, accurately detects the cracked condition of actual emergence chain in time, guarantees to produce and goes on smoothly.
In order to achieve the above purpose, the technical proposal of the utility model for solving the problems is that,
a chain breakage detection device for a dual drag chain embedded drag feeder, comprising:
the shell is fixedly arranged at the top of the double-scraper chain buried scraper coal feeder;
the connecting rod is arranged above the scraper through bearings fixed on two inner side walls of the shell, and the connecting rod and the scraper are arranged in parallel;
the poking plate is fixedly connected and connected with the connecting rod through a screw rod which is vertically arranged in a normal state, the axis of the screw rod is vertically and fixedly arranged with the axis of the connecting rod, and the other end of the screw rod is fixedly provided with a poking rod for touching the scraping plate;
the induction rod is vertically and fixedly arranged on the connecting rod; and
and the proximity switch is matched with the induction rod and is aligned on the inner side wall of the shell.
The further improvement is that: the chain breakage detection device further comprises a spring used for buffering the action amplitude of the screw rod, one end of the spring is connected with the screw rod, and the other end of the spring is fixedly connected to the inner side wall of the shell. Preferably, when the screw rod is in a vertical state, the spring is in a normal state without stress. Therefore, when the shifting plate moves passively by touching the scraper, the vibration caused by sudden stress of the shifting plate can be relieved and reduced through the spring action, so that the motion of the shifting rod is buffered, the abrasion is reduced, and the service life is prolonged.
The top of the upper portion of the chain corresponding to the double-scraper chain embedded scraper coal feeder is provided with an opening, and the shell is arranged above the scraper of the double-scraper chain embedded scraper coal feeder through the opening. With this assurance the utility model discloses an installation position is accurate, guarantees that the testing result is accurate.
The further improvement is that: the chain breakage detection device further comprises a top plate which is horizontally arranged and used for sealing the opening hole, and the top plate is fixedly arranged at the top end of the shell through a bolt. Therefore, the double-scraper chain embedded scraper coal feeder and the chain breakage detection device are sealed, the pulverized coal is prevented from being exposed, and the working environment is improved. And the mounting position of the broken chain detection device can be adjusted by moving the top plate, so that the accuracy of a detection result is ensured.
The utility model has the advantages that:
the utility model discloses simple structure, convenient to use. Dial the board through the scraper blade touching, drive the connecting rod and rotate, and then change the position of response pole, trigger proximity switch to reach the purpose of detecting whether normal operating of chain.
When the chain fracture detection device of the utility model is used normally, the induction rod is in periodic reciprocating action due to the action of the scraper on the shifting plate, and the proximity switch is in a periodic state of opening and closing when opening; if the chain breaks, the shifting plate stops acting, and the proximity switch is in a normally open state or a normally closed state at the moment. When the proximity switch feeds back different states to the control center through signal transmission, the state of the chain can be detected in real time, and whether the chain is broken or not can be accurately and timely judged.
Drawings
FIG. 1 is a schematic view of the main structure of the chain breakage detecting device of the present invention;
fig. 2 is a side view of the present invention.
Description of the reference numerals
1. The device comprises a shell, 2, a shifting plate, 3, a connecting rod, 4, a bearing, 5, a spring, 6, an induction rod, 7, a proximity switch, 8, a top plate, 9 and a screw rod.
Detailed Description
The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
A chain breakage detection device for a double-scraper chain buried scraper coal feeder is structurally shown in figures 1 and 2 and mainly comprises a shell 1, a shifting plate 2, a connecting rod 3, an induction rod 6 and a proximity switch 7. And a rectangular opening is formed in the top of the coal feeder with the embedded double-scraper chain according to the position of the scraper chain, and the chain breakage detection device extends into the top of the coal feeder with the embedded double-scraper chain from the rectangular opening and is used for detecting the running condition of the chain in the production process in real time.
Shell 1 is a hollow rectangle casing for hold fixedly the utility model discloses an other parts, the bottom of rectangle casing sets up the opening, conveniently dials board 2 and stretches out shell 1, buries the scraper blade contact of scraper blade feeder with two scraper chain. The top surface of the shell 1 is fixedly provided with a top plate 8, a plurality of bolt holes are formed in the vertical plate surface of the top plate 8, the top plate 8 is fixedly installed at the top of the coal feeder with the double-scraper chain embedded scraper through penetrating bolts and used for sealing rectangular holes and preventing pulverized coal from flying. After the installation is completed, the top plate 8 should be in a horizontally arranged state parallel to the conveying direction.
A pair of bearings 4 is correspondingly and fixedly arranged on two opposite inner side walls of the shell 1, and the two bearings 4 are arranged along the vertical direction of the conveying direction of the double-scraper chain buried scraper coal feeder. In this embodiment, the bearing 4 is fixed in the housing 1 by welding. The connecting rod 3 is arranged on the bearing 4 in a penetrating way, namely the connecting rod 3 is arranged in parallel with the scraper and is positioned above the scraper.
The middle part of the connecting rod 3 is vertical to the axis of the connecting rod 3 and is fixedly provided with a screw 9, namely, the axis of the screw 9 is vertical and orthogonal to the axis of the connecting rod 3, and the screw 9 is in a vertical and downward state under the action of gravity. The two ends of the screw rod 9 are provided with external threads, the middle part of the connecting rod 3 is radially provided with a threaded hole in a penetrating way along the vertical axis, and one end of the screw rod 9 is arranged in the threaded hole in a penetrating way. The poking plate 2 is a circular thin plate, the circular plate surface of the poking plate 2 is used for touching the scraping plate, a threaded groove hole is vertically and inwards formed in the side wall surface of the poking plate 2, and the threaded groove hole is used for being screwed with the other end of the screw rod 9. According to the distance between the connecting rod 3 and the scraper, the effective use length of the screw rod 9 is adjusted, so that the contact effect of the shifting plate 2 and the scraper can reach the best state.
A section of spring 5 is arranged between the screw rod 9 and the shell 1, one end of the spring 5 is connected with the screw rod 9, and the other end of the spring 5 is fixedly connected to the inner side wall of the shell 1. When the dial 2 is not in contact with the blade, i.e. the screw 9 is only under gravity, the spring 5 is also in an unstressed normal state. When the shifting plate 2 touches the scraper, the spring 5 is in a compressed or stretched state and is used for buffering the vibration of the screw rod 9 under sudden stress and reducing abrasion; meanwhile, the spring 5 can also enable the screw rod 9 to be quickly reset through restoring force.
The induction rod 6 is fixedly arranged on the connecting rod 3, and the axis of the induction rod 6 is vertically intersected with the axis of the connecting rod 3. Proximity switch 7 uses with the cooperation of response pole 6, and proximity switch 7 counterpoints the horizontal position setting of response pole 6 on the inside wall of shell 1.
The utility model discloses a main principle of operation does:
the board is dialled in the scraper blade touching, drives the connecting rod and takes place to rotate, and then changes the position of the response pole on the connecting rod, triggers proximity switch, can detect out whether normal operating of scraper blade, reflects whether normal work of chain promptly through the running state of scraper blade.
When the proximity switch works normally, the scraper periodically touches the shifting plate, and the induction rod periodically reciprocates to enable the proximity switch to be in a state of being opened and closed periodically; when the chain fracture, the scraper blade lasts the touching or no longer touches and dials the board, and the response pole stops the action, and proximity switch can be in the state of normally opening or normally closed. The proximity switch feeds back signals to the control center, and a worker can monitor whether the operation condition of the double-scraper chain buried scraper coal feeder is normal or not in real time.
Of course, the utility model discloses can also set up the alarm device who is connected with the proximity switch electricity, when the signal feedback of proximity switch is in under the abnormal conditions of normally opening or normally closed, trigger alarm device and send out the police dispatch newspaper, remind the staff so that discover the cracked condition of chain, in time maintain, avoid the loss.
The foregoing description is only of the preferred embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (4)
1. A chain breakage detection device for a dual drag chain embedded drag feeder, comprising:
the shell is fixedly arranged at the top of the double-scraper chain buried scraper coal feeder;
the connecting rod is arranged above the scraper through bearings fixed on two inner side walls of the shell, and the connecting rod and the scraper are arranged in parallel;
the poking plate is fixedly connected and connected with the connecting rod through a screw rod which is vertically arranged in a normal state, the axis of the screw rod is vertically and fixedly arranged with the axis of the connecting rod, and the other end of the screw rod is fixedly provided with a poking rod for touching the scraping plate;
the induction rod is vertically and fixedly arranged on the connecting rod; and
and the proximity switch is matched with the induction rod and is aligned on the inner side wall of the shell.
2. The chain breakage detection device for a dual drag chain embedded scraper coal feeder of claim 1, wherein: the chain breakage detection device further comprises a spring used for buffering the action amplitude of the screw rod, one end of the spring is connected with the screw rod, and the other end of the spring is fixedly connected to the inner side wall of the shell.
3. The chain breakage detection device for a dual drag chain embedded scraper coal feeder of claim 1, wherein: the top of the double-scraper chain buried scraper coal feeder above the corresponding chain is provided with an opening, and the shell is arranged above the scraper of the double-scraper chain buried scraper coal feeder through the opening.
4. The chain breakage detection device for a dual scraper chain embedded scraper coal feeder of claim 3, wherein: the chain breakage detection device further comprises a top plate which is horizontally arranged and used for sealing the opening hole, and the top plate is fixedly arranged at the top end of the shell through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680612.8U CN210102757U (en) | 2019-05-14 | 2019-05-14 | Chain breakage detection device for double-scraper chain embedded scraper coal feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680612.8U CN210102757U (en) | 2019-05-14 | 2019-05-14 | Chain breakage detection device for double-scraper chain embedded scraper coal feeder |
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| CN210102757U true CN210102757U (en) | 2020-02-21 |
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| CN201920680612.8U Active CN210102757U (en) | 2019-05-14 | 2019-05-14 | Chain breakage detection device for double-scraper chain embedded scraper coal feeder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116891A (en) * | 2019-05-14 | 2019-08-13 | 秦皇岛秦热发电有限责任公司 | Broken chain detecting device for Double-scraper chain beried scraper coal feeder |
-
2019
- 2019-05-14 CN CN201920680612.8U patent/CN210102757U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116891A (en) * | 2019-05-14 | 2019-08-13 | 秦皇岛秦热发电有限责任公司 | Broken chain detecting device for Double-scraper chain beried scraper coal feeder |
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