Tempering plate dust removal equipment

Abstract

The utility model discloses dust removal equipment for a tempering plate. The tempering plate dust removal equipment comprises a brush, a cloth bag type dust removal device and a negative pressure dust removal device which are sequentially arranged in the running direction of a tempering plate, the brush is arranged above the tempering plate through a supporting structure, and dust suction ports corresponding to the cloth bag type dust removal device and the negative pressure dust removal device are arranged above the tempering plate; and the isolation device is used for forming a closed dust collection operation space, and the brush, the cloth bag type dust removal device and the negative pressure dust removal device are arranged in the dust collection operation space. According to the embodiment, impurities on the surface of the tempered plate can be reduced, and the quality of the tempered plate is improved.

Description

Technical Field

[0001] This application belongs to the field of metallurgical technology, and in particular relates to a dust removal device for tempered plates. Background Technology

[0002] With the rapid development and progress of science and technology, the demand for steel from all walks of life is increasing day by day. This increase is not only reflected in quantity, but also in the continuous improvement of the requirements for steel quality and performance.

[0003] Tempered steel sheets are widely used due to their high strength, high wear resistance, good plasticity, toughness, and weldability. For example, they can be used to manufacture important structures such as automobile crane booms, turntables, and container main ridge beams.

[0004] However, after tempering and straightening processes, a large number of impurities are generated on the surface of the tempered steel plate, resulting in a reduction in its quality. Therefore, how to remove impurities from the surface of the tempered steel plate is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This application provides a dust removal device for tempered plates, which can reduce impurities on the surface of tempered plates and improve the quality of tempered plates.

[0006] In a first aspect, embodiments of this application provide a tempering plate dust removal device, comprising: a brush, a bag filter, and a negative pressure dust removal device arranged sequentially along the running direction of the tempering plate; the brush being arranged above the tempering plate via a support structure; and the corresponding suction ports of the bag filter and the negative pressure dust removal device being arranged above the tempering plate; and an isolation device for forming a sealed dust removal working space, in which the brush, the bag filter, and the negative pressure dust removal device are arranged.

[0007] In one embodiment, the device further includes a photoelectric sensor for detecting the position of the tempering plate.

[0008] In one embodiment, the photoelectric sensing device includes at least a first photoelectric sensing device deployed at a first preset position. The first photoelectric sensing device is used to generate a first detection signal when a tempering plate is detected, so that the brush is adjusted to the target position.

[0009] In one embodiment, the first preset position is: the position before entering the isolation device in the running direction of the tempering plate.

[0010] In one embodiment, the photoelectric sensing device includes at least a second photoelectric sensing device deployed at the target dust removal location; the second photoelectric sensing device is used to generate a second detection signal when a tempering plate is detected, so as to cause the bag filter dust collector to operate with a first operating parameter and the negative pressure dust collector to operate with a second operating parameter.

[0011] In one embodiment, when the bag filter operates according to the first operating parameters, the bag filter reaches the first preset dust removal pressure level; when the negative pressure dust collector operates according to the second operating parameters, the negative pressure dust collector reaches the second preset dust removal pressure level.

[0012] In one embodiment, the first operating parameter includes at least the operating frequency parameter of the bag filter; the second operating parameter includes at least the operating frequency parameter of the negative pressure dust collector.

[0013] In one embodiment, the operating frequency parameters of the bag filter dust collector enable the bag filter dust collector to meet a first preset pressure condition and a first preset pressure difference condition; the operating frequency parameters of the negative pressure dust collector enable the negative pressure dust collector to meet a second preset pressure condition and a second preset pressure difference condition.

[0014] In one embodiment, the photoelectric sensing device includes at least a third photoelectric sensing device deployed at a second preset position; the third photoelectric sensing device is used to generate a third detection signal when the target position of the tempering plate is detected to have left the isolation device, so as to make the bag filter dust collector operate with a first standby parameter and make the negative pressure dust collector operate according to a second standby parameter.

[0015] In one embodiment, the second preset position is the position away from the isolation device in the running direction of the tempering plate.

[0016] In this embodiment of the tempering plate dust removal equipment, when removing dust from the tempering plate, impurities adhering to the tempering plate are first swept away by a brush. Further, a bag filter and a negative pressure dust collector, deployed in the same isolation device, remove impurities attached to the surface of the tempering plate. It is understood that deploying the bag filter and negative pressure dust collector in the same isolation device enables complementary airflow within the isolation device, thus improving the impurity removal effect of both devices, reducing impurities on the tempering plate surface, and improving the quality of the tempering plate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This paper shows a schematic diagram of the architecture of a tempering plate dust removal device according to an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the architecture of a negative pressure dust removal device according to an embodiment of this application is shown;

[0020] Figure 3 This paper shows a schematic diagram of the architecture of a tempering plate dust removal device according to an embodiment of the present application;

[0021] Figure 4 This paper shows a schematic diagram of the architecture of a tempering plate dust removal device according to an embodiment of the present application;

[0022] Figure 5 A schematic diagram of the architecture of a tempering plate dust removal device provided in one embodiment of this application is shown.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Tempered plate dust removal equipment; 101. Brush; 102. Bag filter dust collector; 103. Negative pressure dust collector; 104. Isolation device; 105. Tempered plate; 106. Photoelectric sensor; 1601. First photoelectric sensor; 1062. Second photoelectric sensor; 1063. Third photoelectric sensor. Detailed Implementation

[0025] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0027] With the rapid development and progress of science and technology, all industries are constantly raising their requirements for the quality and performance of steel.

[0028] As tempered steel is a type of steel used in engineering machinery, it is widely used in the manufacture of equipment required by various industrial fields such as machinery, coal, and transportation due to its high strength, high wear resistance, good plasticity, toughness, and weldability. For example, tempered steel can be used to manufacture important structures such as automobile crane booms, turntables, and container main ridge beams.

[0029] However, during the manufacturing process of tempered steel plates, especially after tempering and straightening, a large amount of impurities such as iron oxide scale and shavings are generated on the surface, leading to a reduction in the quality of the tempered steel plates. Understandably, after high-temperature tempering, a dense iron oxide scale forms on the surface of the tempered steel plate, and the bonding force between the iron oxide scale and the main body of the tempered steel plate decreases, making it extremely prone to breakage and falling off. Furthermore, after high-temperature treatment, tempered steel plates are usually straightened to flatten the shape and eliminate internal stress. At this time, the iron oxide scale on the surface of the tempered steel plate is broken down by the working rollers of the straightening machine, producing iron oxide scale and shavings. These iron oxide scale and shavings damage the flatness and smoothness of the tempered steel plate surface, thereby accelerating wear and reducing its wear resistance. In addition, the iron oxide scale and shavings can also cause mottled and uneven surfaces on the tempered steel plate, reducing appearance quality and leading to poor surface treatment results, such as blurry or unclear finishes during electroplating and painting.

[0030] Therefore, how to remove impurities from the surface of tempered plates to improve their quality is a technical problem that urgently needs to be solved by those skilled in the art.

[0031] To address the problems of the prior art, this application provides a dust removal device for tempered plates. The dust removal device for tempered plates provided in this application is described below.

[0032] Figure 1 A schematic diagram of the architecture of a tempering plate dust removal device according to an embodiment of this application is shown. Figure 1 As shown, the tempering plate dust removal equipment 100 includes a brush 101, a bag filter 102, and a negative pressure dust removal device 103 arranged sequentially along the running direction of the tempering plate 105. The brush 101 is arranged above the tempering plate 105 through a support structure, and the corresponding dust collection ports of the bag filter 102 and the negative pressure dust removal device 103 are arranged above the tempering plate 105. An isolation device 104 is used to form a closed dust collection operation space, in which the brush 101, the bag filter 102, and the negative pressure dust removal device 103 are arranged.

[0033] For example, the tempering plate 105 can be run via a roller conveyor.

[0034] The brush 101 can be deployed above the tempering plate 105 via a support structure. The brush 101 can be a single row of brushes or a combination of multiple brushes. In one example, the brush 101 may include two rows or three rows of brushes.

[0035] In some alternative embodiments, the brush 101 may also be deployed below the tempering plate 105, and one or more brushes 101 may be deployed together.

[0036] For example, the brush 101 can sweep impurities on the tempering plate 105 laterally with uniform force, thereby loosening the impurities on the tempering plate 105 and making them easier for the dust removal device to pick up. In one example, the bristles can be made of a relatively soft material such as copper wire, and are laterally fixed above the roller conveyor by a rigid material, with screw adjustment devices at both ends. By adjusting the screws, the height of the brush 101 can be adjusted, thereby controlling the contact force between the bristles and the surface of the tempering plate 105.

[0037] Exemplarily, the bag filter 102 and the negative pressure dust collector 103 can be used to remove impurities from the tempering plate 105. The bag filter 102 and the negative pressure dust collector 103 are sequentially arranged along the running direction of the tempering plate 105, and their respective suction ports can be positioned above the tempering plate 105 to remove impurities. In one example, the bag filter... Figure 2 As shown, the baghouse dust collection system may include dust collection ducts, baghouse dust collectors, a main fan and motor, air knives, and other structures. In another example, the negative pressure dust collection device 103 may be as follows: Figure 2 As shown, the negative pressure dust removal device 103 can be composed of a main fan, a filter element, a suction port, a dust collection trolley, and pipes. The negative pressure dust removal device 103 generates sufficient negative pressure through the main fan and motor to collect and suck up the impurities cleaned by the brush 101.

[0038] In one example, the distance between the suction port of the bag filter 102 and the tempering plate 105 can vary depending on the size of the bag filter 102. For example, the suction port of a small-sized bag filter 102 can be positioned 8 to 10 millimeters above the tempering plate 105. The suction port of a large-sized bag filter 102 can be positioned 50 to 100 millimeters above the tempering plate 105.

[0039] In another example, similar to the bag filter dust collector 102, the distance between the suction port and the tempering plate 105 can vary for different sizes of negative pressure dust collectors 103. For example, the suction port of a small-sized negative pressure dust collector 103 can be positioned 6mm to 8mm above the tempering plate 105. The suction port of a large-sized negative pressure dust collector 103 can be positioned 30mm to 50mm above the tempering plate 105.

[0040] For example, the isolation device 104 can be used to isolate the cleaning operation space from the external environment, thereby avoiding pollution to the external environment.

[0041] The working space formed by the isolation device 104 may include a brush 101, a bag filter 102, and a negative pressure dust collector 103. Specifically, the working space formed by the isolation device 104 may include one or more bag filters 102 and one or more negative pressure dust collectors 103.

[0042] In this embodiment, during dust removal from the tempering plate 105, impurities adhering to the tempering plate 105 are first swept away by a brush 101. Further, a bag filter 102 and a negative pressure dust collector 103, both deployed in the same isolation device 104, remove impurities adhering to the surface of the tempering plate 105. It is understood that deploying the bag filter 102 and the negative pressure dust collector 103 in the same isolation device 104 enables complementary airflow within the isolation device 104, resulting in better impurity removal by the bag filter 102 and the negative pressure dust collector 103, thereby reducing impurities on the surface of the tempering plate 105 and improving the quality of the tempering plate 105.

[0043] In order to detect the position of the tempering plate, as another implementation of this application, this application also provides another implementation of the tempering plate dust removal device 100, as detailed in the following embodiments.

[0044] The tempering plate dust removal equipment 100 may also include a photoelectric sensor 106. The photoelectric sensor 106 can be used to detect the position of the tempering plate 105.

[0045] In some alternative embodiments, Figure 3 This application provides a schematic diagram of the architecture of a tempering plate dust removal device according to one embodiment. Figure 3 As shown, the photoelectric sensing device 106 includes at least a first photoelectric sensing device 1061 deployed at a first preset position. The first photoelectric sensing device 1061 is used to generate a first detection signal upon detecting the tempering plate 105, so that the brush 101 is adjusted to the target position.

[0046] For example, the target position corresponding to the brush 101 is where the brush can perform its cleaning function in a better posture.

[0047] For example, the thickness parameter of the tempering plate can be obtained, and the brush can be adjusted to the target position according to the thickness parameter of the tempering plate. The thickness parameter of the tempering plate 105 can be used to characterize the thickness of the tempering plate 105. Furthermore, the thickness parameter of the tempering plate 105 can be determined through the relevant specification parameters of the tempering plate 105.

[0048] Furthermore, based on the preset correspondence and thickness parameters, the target position corresponding to the brush 101 is determined. The preset correspondence represents the relationship between different thickness parameters of the tempering plate 105 and different positions of the brush 101. The positions of the brush 101 corresponding to different thicknesses of the tempering plate 105 can be different. In one example, after determining the target position corresponding to the brush 101, the brush 101 can be adjusted to the target position through the control system in the tempering plate dust removal equipment 100, or a technician can adjust the brush 101 to the target position.

[0049] In one example, after determining the target position corresponding to the brush 101, the brush 101 can be adjusted to a fixed position through the control system in the tempering plate dust removal equipment 100. In another example, the brush 101 can be adjusted to the target position by a technician.

[0050] In one example, the first photoelectric sensing device 1061 may be a photoelectric sensor. Alternatively, the first photoelectric sensing device 1061 may be a grating.

[0051] For example, after detecting the tempering plate 105, the first photoelectric sensor 1061 can send a first detection signal to the controller of the tempering plate dust removal equipment 100. After receiving the first detection signal sent by the first photoelectric sensor 1061, the controller of the tempering plate dust removal equipment 100 can adjust the brush 101 to the target position.

[0052] In some optional embodiments, the first preset position can be a position before entering the isolation device 104 in the running direction of the tempering plate 105. This can reduce the size of the working space constructed by the isolation device 104, avoid resource waste, and allow for timely adjustment of the position of the brush 101, providing a better surface foundation for the tempering plate 105 for subsequent dust removal devices.

[0053] In one example, the first photoelectric sensor 1061 may also be located inside the isolation device 104 and before the bag filter 102 and the negative pressure dust collector 103.

[0054] In this embodiment, the first photoelectric sensor 1061 can realize the automated adjustment process of the brush 101, reduce labor costs, and improve the accuracy of the position adjustment of the brush 101.

[0055] In some alternative embodiments, Figure 4 This application provides a schematic diagram of the architecture of a tempering plate dust removal device according to one embodiment. Figure 4 As shown, the photoelectric sensing device 106 includes at least a second photoelectric sensing device 1062 deployed at the target dust removal location. The second photoelectric sensing device 1062 is used to generate a second detection signal upon detecting a tempered plate, thereby causing the bag filter to operate at a first operating parameter and the negative pressure dust collector to operate at a second operating parameter.

[0056] In one example, the second photoelectric sensing device 1062 may be a photoelectric sensor. Alternatively, the second photoelectric sensing device 1062 may be a grating.

[0057] For example, after detecting the tempering plate 105, the second photoelectric sensor 1062 can send a second detection signal to the controller of the tempering plate dust removal equipment 100. After receiving the second detection signal sent by the second photoelectric sensor 1062, the controller of the tempering plate dust removal equipment 100 can determine that the tempering plate 105 has reached the target dust removal position.

[0058] Furthermore, after determining that the tempering plate 105 has reached the target dust removal position, the bag filter 102 can be controlled according to the first working parameters, and the negative pressure dust removal device 103 can be controlled according to the second working parameters.

[0059] Specifically, when the bag filter dust collector operates according to the first operating parameters, the bag filter dust collector can reach the first preset dust removal pressure level; when the negative pressure dust collector operates according to the second operating parameters, the negative pressure dust collector can reach the second preset dust removal pressure level.

[0060] For example, when it is determined that the tempering plate 105 has reached the target dust removal position in the isolation device 104, the bag filter 102 can be controlled according to the first working parameters so that the bag filter 102 reaches the preset dust removal pressure level corresponding to the bag filter 102, and the negative pressure dust removal device 103 can be controlled according to the second working parameters so that the negative pressure dust removal device 103 reaches the preset dust removal pressure level corresponding to the negative pressure dust removal device 103.

[0061] In some alternative embodiments, the first operating parameter includes at least the operating frequency parameter of the bag filter; the second operating parameter includes at least the operating frequency parameter of the negative pressure dust collector.

[0062] The first operating parameter includes at least the operating frequency parameter of the bag filter 102, and the operating frequency parameter of the bag filter 102 enables the bag filter 102 to meet the first preset pressure condition and the first preset pressure difference condition; the second operating parameter includes at least the operating frequency parameter of the bag filter 102, and the operating frequency parameter of the negative pressure dust collector enables the bag filter 102 to meet the second preset pressure condition and the second preset pressure difference condition.

[0063] In one example, after the tempering plate 105 is detected to have reached the target dust removal position, the bag filter 102 can be controlled to operate at a frequency of 46 Hz to 48 Hz, and the negative pressure of the bag filter 102 can be controlled to reach 2000 Pa, with a pressure difference within 500 Pa. Due to the structure of the bag filter 102, the airflow of the air knife in the bag filter 102 can be simultaneously set to reach 8000 Am. 3 / h.

[0064] In another example, after the flashback plate 105 is detected to have reached the target dust removal position, the negative pressure dust removal device 103 can be controlled to operate at a frequency of 55Hz to 60Hz, so that the negative pressure of the negative pressure dust removal device 103 reaches 6000Pa and the pressure difference is within 400Pa.

[0065] It is understood that baghouse dust collectors 102 and negative pressure dust collectors 103 of different specifications can correspond to different operating frequencies, so that the corresponding negative pressure and pressure difference reach preset pressure conditions and preset pressure difference conditions. Furthermore, different dust removal requirements can correspond to different preset pressure conditions and preset pressure difference conditions. Therefore, the above embodiments are only for illustrative purposes, and the embodiments of this application do not limit the scope of the application.

[0066] In this embodiment, the operating frequency parameters of the bag filter dust collector enable it to meet the first preset pressure condition and the first preset pressure difference condition, and the operating frequency parameters of the negative pressure dust collector enable it to meet the second preset pressure condition and the second preset pressure difference condition. This allows the airflow inside the isolation device to achieve complementary airflow, resulting in better impurity removal by both the bag filter dust collector and the negative pressure dust collector, thereby reducing impurities on the tempering plate surface and improving the quality of the tempering plate.

[0067] Furthermore, in this embodiment of the application, after the second photoelectric sensor 1062 determines that the tempering plate 105 has reached the target dust removal position, the bag filter 102 and the negative pressure dust removal device 103 are controlled to work according to the preset working parameters, thereby reducing energy consumption and achieving cost reduction and efficiency improvement.

[0068] In some other alternative embodiments, Figure 5This application provides a schematic diagram of the architecture of a tempering plate dust removal device according to one embodiment. Figure 5 As shown, the photoelectric sensing device includes at least a third photoelectric sensing device 1063 deployed at a second preset position. The third photoelectric sensing device 1063 is used to generate a third detection signal when the target position of the tempering plate 105 is detected to have left the isolation device, so that the bag filter 102 operates with a first standby parameter and the negative pressure dust collector 103 operates according to a second standby parameter.

[0069] For example, the target position of the tempering plate 105 can be the tail of the tempering plate 105. That is, after the tail of the tempering plate 105 is detected, the bag filter 102 can be controlled according to the first standby parameter and the negative pressure dust collector 103 can be controlled according to the second standby parameter so that the bag filter 102 and the negative pressure dust collector 103 are in standby state.

[0070] In response to receiving a third detection signal sent by the third photoelectric sensor 1063, the bag filter 102 can be controlled according to the first standby parameters, and the negative pressure dust collector 103 can be controlled according to the second standby parameters.

[0071] In some alternative embodiments, the second preset position is a position away from the isolation device in the direction of the tempering plate's movement.

[0072] For example, the second preset position can be set inside the isolation device 104 or outside the isolation device 104.

[0073] For example, after detecting the tempered plate 105, the third photoelectric sensor 1063 can send a third detection signal to the controller of the tempered plate dust removal equipment 100. After receiving the third detection signal sent by the third photoelectric sensor 1063, the controller of the tempered plate dust removal equipment 100 controls the bag filter 102 according to the first standby parameters and controls the negative pressure dust removal device 103 according to the second standby parameters.

[0074] In this embodiment, by determining that the tempering plate 105 has left the isolation device 104, the bag filter 102 and the negative pressure dust collector 103 are adjusted to standby mode. This avoids the problem of waste of resources caused by the bag filter 102 and the negative pressure dust collector 103 still working after the tempering plate 105 has left.

[0075] In this embodiment, the third photoelectric sensor 1063 can be used to determine whether the tempering plate 105 is throwing off its tail, thereby determining whether to adjust the bag filter 102 and the negative pressure dust collector 103 to provide accurate data support.

[0076] In this embodiment, by deploying a photoelectric sensor in the tempering plate dust removal equipment, the timing of the opening and closing of each component in the tempering plate dust removal equipment can be better controlled. This allows for timely opening or closing of each component. Therefore, by deploying a photoelectric sensor in the tempering plate dust removal equipment, the dust removal effect of the tempering plate dust removal equipment can be guaranteed, while reducing resource waste and lowering costs.

[0077] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A dust removal device for tempered plates, characterized in that, include: A brush, a bag filter, and a negative pressure dust collector are arranged sequentially along the running direction of the tempering plate. The brush is arranged above the tempering plate through a support structure, and the dust collection ports of the bag filter and the negative pressure dust collector are arranged above the tempering plate respectively. An isolation device is used to form a closed vacuuming work space, in which the brush, the bag filter, and the negative pressure dust removal device are deployed.

2. The device according to claim 1, characterized in that, The device also includes: A photoelectric sensing device is used to detect the position of the tempering plate.

3. The device according to claim 2, characterized in that, The photoelectric sensing device includes at least a first photoelectric sensing device deployed at a first preset position. The first photoelectric sensing device is used to generate a first detection signal when the tempering plate is detected, so that the brush is adjusted to the target position.

4. The device according to claim 3, characterized in that, The first preset position is: the position before entering the isolation device in the running direction of the tempering plate.

5. The device according to claim 2, characterized in that, The photoelectric sensing device includes at least a second photoelectric sensing device deployed at the target dust removal location; The second photoelectric sensor is used to generate a second detection signal when the tempering plate is detected, so that the bag filter dust collector operates with the first operating parameter and the negative pressure dust collector operates with the second operating parameter.

6. The device according to claim 5, characterized in that, When the bag filter dust collector operates according to the first operating parameters, the bag filter dust collector reaches the first preset dust removal pressure level. When the negative pressure dust collector operates according to the second operating parameters, the negative pressure dust collector reaches the second preset dust removal pressure level.

7. The device according to claim 5 or 6, characterized in that, The first operating parameter includes at least the operating frequency parameter of the bag filter; the second operating parameter includes at least the operating frequency parameter of the negative pressure dust collector.

8. The device according to claim 6, characterized in that, The operating frequency parameters of the bag filter dust collector enable the bag filter dust collector to meet the first preset pressure condition and the first preset pressure difference condition; the operating frequency parameters of the negative pressure dust collector enable the negative pressure dust collector to meet the second preset pressure condition and the second preset pressure difference condition.

9. The device according to claim 2, characterized in that, The photoelectric sensing device includes at least a third photoelectric sensing device deployed at a second preset position; The third photoelectric sensing device is used to generate a third detection signal when the target position of the tempering plate is detected to have left the isolation device, so as to make the bag filter dust collector operate with the first standby parameter and the negative pressure dust collector operate with the second standby parameter.

10. The device according to claim 9, characterized in that, The second preset position is the position away from the isolation device in the running direction of the tempering plate.

Images