Roller kiln

Abstract

The utility model discloses a roller kiln, and relates to the field of roller kilns, the roller kiln comprises a kiln provided with an exhaust port, a feed port and a discharge port; the roller bars are rotationally arranged on the kiln, one ends of the roller bars are located outside the kiln, and the multiple roller bars are distributed at intervals in the direction from the feeding port to the discharging port; the heating device is used for heating the interior of the kiln; the detection device is used for detecting whether the end, located outside the kiln, of the roller is bent or not. According to the application, the correlation type photoelectric sensor is adopted, and the emitter and the receiver of the correlation type photoelectric sensor are respectively arranged at the two ends of the kiln, so that when the roller is broken, the end part, positioned outside the kiln, of the roller tilts to a position between the emitter and the receiver to shield a signal sent to the receiver by the emitter, and at the moment, the correlation type photoelectric sensor detects that the signal is disconnected; and the data is transmitted to an external control system to give an alarm to a worker, so that the workload of periodic inspection of the worker is reduced, and the response time of the worker is shortened when the roller is broken.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of roller kiln, in particular to a roller kiln. BACKGROUND

[0002] The roller kiln is generally used for firing process, including a kiln for keeping temperature and providing temperature environment, and a plurality of roller bars for conveying the sagger.

[0003] At present, since the kiln driving motor drives the roller bar and the sagger filled with materials to slowly run in the furnace, the long-time running of the roller bar with the sagger may cause the roller bar to break and present the state of the end of the roller bar upwardly buckling, so that the workers need to regularly check the roller bar one by one to confirm the running state of the roller bar, and report the breakage in time to stop the furnace and replace.

[0004] However, if the inspection period is set too long, multiple broken roller bars may not be found in time, resulting in the collapse of the furnace, and if the inspection period is shortened, the work burden of the workers will be greatly increased. CONTENT OF THE INVENTION

[0005] In view of the above-mentioned deficiencies of the related art, the present application provides a roller kiln.

[0006] The roller kiln provided by the present application adopts the following technical scheme:

[0007] A roller kiln comprises:

[0008] A kiln provided with an exhaust port, a feeding port and a discharging port;

[0009] Roller bars rotatably arranged on the kiln and located at one end outside the kiln, and a plurality of the roller bars are distributed along the direction from the feeding port to the discharging port;

[0010] A heating device for heating in the kiln;

[0011] A detection device for detecting whether the end of the roller bar located outside the kiln is bent.

[0012] Optionally, the detection device comprises a pair of photoelectric sensors, and the emitter and the receiver of the photoelectric sensors are respectively located at the two ends in the conveying direction outside the kiln.

[0013] Optionally, a baffle is arranged on the kiln, and the baffle is located on the side away from the kiln at the end of the roller bar located outside the kiln.

[0014] Optionally, a window for observing the end of the roller bar located outside the kiln is arranged on the baffle.

[0015] Optionally, a plurality of baffles are arranged, and the baffles are arranged along the conveying direction.

[0016] Optionally, the baffle is detachably arranged on the kiln.

[0017] Optionally, an extension plate is fixed on the top of the kiln, a limiting protrusion is arranged on the side of the extension plate away from the roller, a clamping block is fixed on the side of the baffle close to the kiln, and a clamping slot is arranged on the clamping block for inserting the limiting protrusion.

[0018] Optionally, a lifting opening is arranged on the baffle for lifting the baffle.

[0019] Optionally, a supporting wheel is rotatably arranged on the outer wall of the kiln for supporting the end of the roller outside the kiln, and each roller is in abutment with two supporting wheels.

[0020] Optionally, the heating device comprises two groups of electric heating elements arranged on the two sides of the plurality of rollers respectively.

[0021] In summary, the present application has at least one of the following beneficial technical effects:

[0022] 1. The present application adopts a pair of photoelectric sensors, and the transmitter and receiver are arranged at the two ends of the kiln. When the roller breaks, the end of the roller outside the kiln is tilted between the transmitter and the receiver, and the transmitter blocks the signal sent to the receiver. At this time, the pair of photoelectric sensors detects that the signal is disconnected, and transmits an alarm to the external control system to alert the staff, reducing the workload of the staff for periodic inspection, and shortening the response time of the staff when the roller breaks.

[0023] 2. The present application sets a baffle and a window for observing the roller on the baffle. On the one hand, the kiln is shielded, and the staff is prevented from being touched as much as possible while being heat-insulated. On the other hand, the efficiency of the staff in checking the position of the broken roller after receiving the alarm is improved.

[0024] 3. The present application uses a plurality of baffles to shield the kiln, and each baffle is detachably arranged. When the roller breaks, the staff can easily detach the baffle corresponding to the specific position of the broken roller for replacement without detaching the baffles of the entire kiln, thereby improving the processing efficiency when the roller breaks. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0027] Figure 2 is Figure 1 is an enlarged view of part A in FIG. 1;

[0028] Figure 3 is a schematic diagram of the structure between the baffle and the kiln in the present application.

[0029] The reference signs: 1, kiln; 2, roller; 3, heating device; 41, transmitter; 42, receiver; 5, baffle; 6, feeding port; 7, exhaust port; 8, heat insulation layer; 9, supporting wheel; 10, lifting port; 11, air pump; 12, air inlet; 13, extension plate; 14, clamping block; 15, limiting protrusion; 16, clamping groove. DETAILED DESCRIPTION

[0030] The following will be described in detail in combination with the accompanying Figures 1-3 The present application will be further described in detail.

[0031] The embodiment of the present application discloses a roller kiln. Referring to Figure 1 and Figure 2 A roller kiln, comprising: a kiln 1, a roller 2 and a heating device 3, the kiln 1 has a cavity inside for accommodating a material loading sagger, the heating device 3 is used for heating the cavity inside the kiln 1, both ends of the kiln 1 in the length direction are respectively provided with a feeding port 6 and a discharging port (not shown in the figure), the feeding port 6 and the discharging port are both communicated with the cavity, the roller 2 is rotatably arranged on the kiln 1 under the driving of a kiln driving motor, and one end of the roller 2 extends out of the kiln 1, and a plurality of rollers 2 are arranged along the length direction of the kiln 1. In order to facilitate real-time detection of the fracture of the roller 2, a detection device for detecting whether the end of the roller 2 located outside the kiln 1 is bent is arranged on the outer wall of the kiln 1. Specifically, one end of the roller 2 extending out of the kiln 1, a non-combustible heat insulation layer 8 is fixed on the kiln 1, the roller 2 is coated by the heat insulation layer 8, and further, in order to maintain the balance of the roller 2, a supporting wheel 9 for supporting the end of the roller 2 located outside the kiln 1 is rotatably arranged on the outer wall of the kiln 1, and each roller 2 abuts against two supporting wheels 9.

[0032] Referring to Figure 1 The heating device 3 comprises two groups of electric heating elements respectively located on both sides of the plurality of rollers 2. Specifically, the two groups of electric heating elements are arranged on the upper and lower sides of the plane where the plurality of rollers 2 are located, and the electric heating elements of each group are distributed along the length direction of the kiln 1. In order to exhaust the flue gas in the kiln 1, an exhaust port 7 is formed at the top of the kiln 1, and a plurality of exhaust ports 7 are distributed along the length direction of the kiln 1, and in order to further provide air for the kiln 1, referring to Figure 3The kiln 1 is provided with an air pump 11 at the bottom, which is located below the electric heating element and has an output end in communication with the inner cavity of the kiln 1.

[0033] With reference to Figure 1 The detection device includes a pair of emitter 41 and receiver 42 of the through-beam photoelectric sensor, which are located at two ends of the kiln 1 along the conveying direction. Specifically, the emitter 41 and the receiver 42 are located on the same horizontal line and above the plane where the plurality of roller bars 2 are located. The distance from the emitter 41 and the receiver 42 to the plane where the plurality of roller bars 2 are located is designed according to the amplitude of the end of the roller bar 2 when the roller bar 2 is broken. When the roller bar 2 is broken, the end of the roller bar 2 located outside the kiln 1 is raised between the emitter 41 and the receiver 42, which blocks the signal emitted by the emitter 41 to the receiver 42. At this time, the through-beam photoelectric sensor detects that the signal is disconnected and transmits it to the external control system to alarm the staff, which reduces the workload of the staff for periodic inspection and shortens the response time of the staff when the roller bar 2 is broken.

[0034] Further, in order to shield the kiln 1 and keep warm while avoiding accidental touch by the staff as much as possible, with reference to Figure 1 The kiln 1 is provided with a plurality of baffle plates 5, which are located at one end of the roller bar 2 away from the kiln 1. The baffle plates 5 are arranged along the length direction of the kiln 1 and abut against each other to shield the side wall of the kiln 1. When the baffle plates 5 are installed on the kiln 1, a window for observing the end of the roller bar 2 located outside the kiln 1 is arranged at the position of the baffle plate 5 aligned with the roller bar 2. In the embodiment, the window is in the form of an open hole, and in other embodiments, the window can also be a closed structure separated by transparent material. When the broken roller bar 2 is detected, the staff can easily remove the baffle plate 5 corresponding to the specific position of the broken roller bar 2 for replacement without removing the baffle plates 5 of the entire kiln 1, which improves the processing efficiency when the roller bar 2 is broken.

[0035] Specifically, in order to remove the baffle plate 5, with reference to Figure 1 and Figure 2The extension plate 13 is fixed on the top of the kiln 1, the length direction of the extension plate 13 is arranged along the length direction of the kiln 1, the plate surface of the extension plate 13 is parallel to the plane formed by the plurality of roller bars 2, the side of the extension plate 13 away from the roller bars 2 is provided with a limiting protrusion 15, the clamping block 14 is fixed on the side surface of the baffle 5 close to the kiln 1, and the clamping groove 16 for inserting the limiting protrusion 15 is arranged on the clamping block 14. When the baffle 5 is installed on the kiln 1, the clamping block 14 is pressed on the extension plate 13 under the action of gravity, at this time, the clamping groove 16 covers the limiting protrusion 15, so as to avoid the baffle 5 sliding along the plate surface of the extension plate 13 to the direction away from the kiln 1 as far as possible. When it is needed to disassemble the baffle 5 from the kiln 1, the baffle 5 is driven to rise to the position where the clamping groove 16 no longer covers the limiting protrusion 15, and then the baffle 5 is driven to move to the direction away from the kiln 1. In order to further facilitate the disassembly and assembly of the baffle 5, two lifting openings 10 are arranged on the baffle 5. In the embodiment, the lifting opening 10 is a hole structure penetrating through the baffle 5, and in other embodiments, the lifting opening 10 can also be a recess structure recessed along the thickness direction of the baffle 5 relative to the plate surface of the baffle 5.

[0036] In other embodiments, the baffle 5 can also be detachably arranged on the kiln 1 through a bolt structure or a clamp.

[0037] Further, in order to facilitate the air flow at the input end of the air pump 11 when air is conveyed into the kiln 1, an air inlet 12 aligned with the input end of the air pump 11 is arranged on the baffle 5. Figure 1

[0038] The implementation principle of the roller kiln in the embodiment is as follows: when it is needed to perform firing on the full material box, the box is placed on the roller bar 2, and then is conveyed into the cavity of the kiln 1 under the driving of the rotation of the plurality of roller bars 2, at this time, the heating device 3 heats the cavity of the kiln 1 to a suitable temperature. When one of the plurality of roller bars 2 is broken, the end of the roller bar 2 is lifted, the lifted end of the roller bar 2 blocks the emitter 41 and the receiver 42 of the opposite type photoelectric sensor, at this time, the opposite type photoelectric sensor transmits an abnormal signal to the external control system to alarm the worker, the worker checks the position of the roller bar 2 with the lifted end from the window of the baffle 5, then lifts the baffle 5 at the corresponding position through the lifting opening 10 and moves the baffle 5 to the direction away from the kiln 1, so as to disassemble the baffle 5, and finally the broken roller bar 2 is replaced, which reduces the workload of the worker for periodic inspection, shortens the response time of the worker when the roller bar 2 is broken, and improves the processing efficiency when the roller bar 2 is broken.

[0039] ​Unless otherwise defined, technical terms or scientific terms used in the present application shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Unless otherwise defined, the terms "first", "second" or "third" and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. The terms "one", "another", "an" or "some" as well as similar referents in the context of describing the specification and claims are to be construed to be open-ended, i.e., to cover both singular and plural referents unless otherwise indicated. The terms "including", "containing" or "comprising" and the like are not intended to exclude other integers or steps, but to "include" or "comprise" other integers or steps unless otherwise indicated. The terms "connected", "coupled" or "pathway" are not restricted to direct connections, couplings or pathways but include indirect connections, couplings or pathways unless otherwise indicated. The terms "above", "below", "left", "right" and the like are only used to express relative positions such that if an absolute position of a described object is changed, the relative positions can also be changed accordingly.

[0040] The above are all optional embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A roller hearth kiln characterized by: The utility model relates to a kind of kiln and its detection device, including: Kiln, provided with exhaust port, feed inlet and discharge outlet; Rolling bar, rotation is arranged in the kiln and one end is located outside the kiln, and multiple rolling bars are distributed along the direction of feed inlet to discharge outlet; Heating device for heating in the kiln; Detection device for detecting whether the end of the rolling bar located outside the kiln is bent; The detection device includes a pair of photoelectric sensors, and the emitter and receiver are located at both ends in the conveying direction outside the kiln respectively; The kiln is provided with a baffle, and the baffle is located on the side away from the kiln at one end of the rolling bar located outside the kiln; The baffle is provided with a window for observing the end of the rolling bar located outside the kiln; Multiple baffles are arranged along the conveying direction; The baffle is detachably arranged on the kiln.

2. A roller hearth kiln as defined in claim 1, characterized in that: The top of the kiln is fixed with an extension plate, and the side away from the rolling bar of the extension plate is provided with a limiting protrusion, and the side close to the kiln of the baffle is fixed with a clamping block, and the clamping block is provided with a clamping groove for inserting the limiting protrusion.

3. A roller hearth kiln as defined in claim 2 wherein: The baffle is provided with a lifting opening for lifting the baffle.

4. A roller hearth kiln as defined in claim 1, wherein: The outer wall of the kiln is rotationally provided with a support wheel for supporting the end of the rolling bar located outside the kiln, and each rolling bar is in contact with two support wheels.

5. A roller hearth kiln as defined in claim 1, wherein: The heating device includes two groups of heating elements located on both sides of multiple rolling bars respectively.

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