A heated platform and its operating platform

Abstract

This utility model relates to the technical field of walkways in papermaking workshops, and more specifically, to a walkway heating device and its operating walkway. The walkway heating device includes a housing, a hot air duct, and a steam duct. Both the hot air duct and the steam duct are connected to the interior of the housing, and both are equipped with a flow control component. It also includes a temperature sensor, the sensing end of which extends into the housing. The housing is further provided with several connecting components. The operating walkway includes a walkway base frame, multiple support rods connected to the bottom of the walkway base frame, and the aforementioned walkway heating device. The housing is connected to the bottom of the walkway base frame via connecting components, and is positioned close to the bottom of the walkway base frame. This utility model is easy to use, prevents condensation, and avoids condensate dripping that could affect paper quality.

Description

Technical Field

[0001] This utility model relates to the technical field of walkways in papermaking workshops, and more specifically, to a walkway heating device and its operating walkway. Background Technology

[0002] In existing paper mill production processes, operating platforms are typically installed above the paper web running path for convenient equipment inspection and maintenance. Due to the small vertical distance between the bottom of the operating platform and the running paper web, a large amount of water vapor generated by the evaporation of the high-temperature paper web condenses on the metal structure at the bottom of the platform, forming continuous water droplets. This condensate dripping directly onto the running paper web surface below will cause defects such as holes. Existing solutions include: manually wiping the bottom of the operating platform at regular intervals; however, this method cannot actively prevent direct heat exchange between the evaporating water vapor from the paper web and the metal structure at the bottom of the operating platform, and frequent manual wiping will affect the efficiency of normal inspections and may pose safety hazards. Alternatively, air can be blown through a pipe to disperse the water vapor at the bottom of the operating platform, but the compatibility between the air pipe and the structure at the bottom of the operating platform is poor, resulting in low heat transfer efficiency and altering the airflow direction in the paper mill, which may even exacerbate localized condensation in severe cases. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies where water vapor dripping onto paper in papermaking workshops affects paper quality. It provides a heated platform and its operating platform, which is easy to use, prevents condensation, and avoids condensate dripping onto paper quality.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A platform heating device is provided, including a housing, a hot air duct, and a steam duct. The hot air duct and the steam duct are both connected to the interior of the housing, and both the hot air duct and the steam duct are provided with a conduction control component. The device also includes a temperature sensor, the sensing end of which extends into the housing. The housing is also provided with several connecting components.

[0006] This utility model discloses a platform heating device. The connecting parts are used to connect the box and the operating platform. The hot air duct and steam duct are used to heat the box and thus the operating platform, preventing condensate from dripping directly onto the paper below the operating platform and affecting the paper quality. The temperature sensor is used to sense the temperature inside the box, and the conduction control is used to control whether the hot air and steam are connected, preventing the continuous flow of hot air and steam from causing the temperature inside the box to become too high.

[0007] Preferably, the upper surface of the housing is provided with a flange.

[0008] Preferably, the upper surface of the box body is sloped.

[0009] Preferably, a first conduit is connected to the first end of the housing, and the hot air conduit is connected to the interior of the housing through the first conduit; a nozzle is connected to the steam conduit, and the nozzle is connected to the first conduit; the distance between the nozzle's outlet end and the housing is less than the distance between the hot air conduit's connecting point and the housing.

[0010] Preferably, the second end of the housing is connected to a discharge pipe, and the wall of the discharge pipe is provided with a heat-resistant layer.

[0011] Preferably, the platform heating device further includes a steam generator connected to the steam duct; the hot air duct is used to connect to the ventilation hood.

[0012] Preferably, the conduction control component includes a first control valve connected to the hot air duct and a second control valve connected to the steam duct; the sensing end of the temperature sensor is located away from the hot air duct and / or the steam duct; the first control valve, the second control valve, and the temperature sensor are all used for communication connection with the DCS system.

[0013] Preferably, the connector includes a hook and a connecting rod, the hook being connected to the outer wall of the box via the connecting rod, and the hook being located above the box.

[0014] Preferably, the connecting rod is a telescopic connecting rod.

[0015] This utility model also provides an operating platform, including a platform base frame, a plurality of support rods connected to the bottom of the platform base frame, and the aforementioned platform heating device. The housing is connected to the bottom of the platform base frame via the connector, and the housing is disposed near the bottom of the platform base frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The connectors are designed for connection between the cabinet and the operating platform. The hot air duct and steam duct are designed for heating the cabinet, which in turn heats the operating platform, preventing condensate from dripping directly onto the paper below the operating platform and affecting paper quality. The temperature sensor is designed for sensing the temperature inside the cabinet, and the continuity control is designed for controlling the flow of hot air and steam, preventing the continuous flow of hot air and steam from causing the temperature inside the cabinet to become too high.

[0018] 2. The flange is designed to guide condensate droplets that fall onto the upper surface of the box along the flange and drain out, preventing them from dripping onto the paper below.

[0019] 3. The slope setting can be used to guide condensate droplets that fall onto the upper surface of the box to collect or drain along the slope;

[0020] 4. The setting of the nozzles, and the position of the nozzles relative to the connection point of the hot air duct, can improve the efficiency of hot air use.

[0021] 5. The telescopic connecting rod design facilitates the connection and mounting of the platform heating device to operating platforms of different specifications. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a first embodiment of the heating device for a walkway according to the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the steam conduit of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of a second embodiment of the heating device for a walkway according to the present invention;

[0025] Figure 4 for Figure 3 Enlarged schematic diagram of section I;

[0026] Figure 5 This is a schematic diagram of the structure of an operating platform according to the present invention.

[0027] In the attached diagram: 100, housing; 110, flange; 120, first conduit; 130, discharge pipe; 200, hot air conduit; 210, first control valve; 300, steam conduit; 310, nozzle; 320, second control valve; 400, temperature sensor; 500, connector; 510, hook; 520, connecting rod; 521, first rod; 522, second rod; 523, oblong hole; 524, locking element; 610, platform base frame; 620, support rod; 630, railing. Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0029] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] Example 1

[0031] like Figures 1 to 2 The first embodiment of the heating device for a platform according to the present invention is shown, including a housing 100, a hot air duct 200, and a steam duct 300. The hot air duct 200 and the steam duct 300 are both connected to the interior of the housing 100, and both the hot air duct 200 and the steam duct 300 are provided with a conduction control component. It also includes a temperature sensor 400, the sensing end of which extends into the housing 100. The housing 100 is also provided with a plurality of connecting components 500.

[0032] The connector 500 is used to connect the box 100 and the operating platform. The hot air duct 200 is used to deliver hot air to the box 100 to heat it. The steam duct 300 is used to deliver steam to the box 100 to supplement its heating. This allows the box 100 to heat the operating platform, preventing condensate from dripping directly onto the paper below the platform and affecting its quality. The temperature sensor 400 is used to sense the temperature inside the box 100. The continuity control is used to control the flow of hot air and steam, preventing excessively high temperatures inside the box due to continuous hot air and steam intake.

[0033] In this embodiment, the box 100 is a rectangular box, and the height of the rectangular box can be set to 4~6cm, preferably 5cm; the length and width of the box 100 can be set according to the size of the operating platform in the actual application. Furthermore, the box 100 can be made of stainless steel, which makes the box 100 corrosion-resistant, high-temperature resistant, and high-strength.

[0034] like Figure 1As shown, the upper surface of the box 100 is provided with a flange 110, which is connected to the edge of the upper surface of the box 100. Specifically, the flange 110 is provided at the front and rear edges of the upper surface of the box 100, so that condensed water droplets dripping onto the upper surface of the box 100 can flow along the flange and be discharged from the left and right ends of the box 100, preventing them from dripping onto the paper below. It should be noted that the left and right ends of the box 100 refer to the two ends of the width portion of the box 100. The flange 110 can also be provided at the edge of the length direction of the box 100. Since the length of the box 100 can be greater than the length of the paper below, even if water droplets are discharged from the left and right ends of the box 100, they will not drip onto the paper. It should also be noted that the flange 110 can be provided at the edges around the upper surface of the box 100.

[0035] like Figure 1 and Figure 2 As shown, a first conduit 120 is connected to the first end of the housing 100, and a hot air conduit 200 is connected to the interior of the housing 100 through the first conduit 120. A nozzle 310 is connected to one end of the steam conduit 300, and the nozzle 310 is connected to the first conduit 120. The distance between the nozzle 310 and the housing 100 is smaller than the distance between the connection point of the hot air conduit 200 and the housing 100. The connection point of the hot air conduit 200 refers to the connection point between the hot air conduit 200 and the first conduit 120. The nozzle 310 is designed to achieve a siphon effect, improving the efficiency of hot air usage. The position of the nozzle 310 relative to the connection point of the hot air conduit 200 ensures that a vacuum zone is formed at the rear end of the nozzle 310 when it begins to spray steam, allowing more hot air to be drawn in and improving the efficiency of hot air usage. It should be noted that the rear end of the nozzle 310 refers to the connection point between the first conduit 120 and the hot air conduit 200. Specifically, the section of the hot air duct 200 near the first duct 120 is arranged perpendicular to the first duct 120, and the nozzle 310 releases steam along the extension direction of the first duct 120. The nozzle 310 has a narrowing section inside, which can accelerate the flow of steam.

[0036] In this embodiment, the platform heating device further includes a steam generator, which is connected and communicates with the other end of the steam duct 300. Additionally, the hot air duct 200 is used to connect to an existing ventilation hood in the papermaking workshop, enabling the use of surplus hot air from the papermaking process for basic heating. It should be noted that the steam generator is prior art and will not be described in detail here.

[0037] like Figure 1As shown, the control components include a first control valve 210 connected to the hot air duct 200 and a second control valve 320 connected to the steam duct 300. The sensing end of the temperature sensor 400 is located away from the hot air duct 200 and the steam duct 300, which improves detection accuracy. Furthermore, the sensing end of the temperature sensor 400 is located away from the bottom surface of the housing 100, preventing direct contact with condensate inside the housing 100. Specifically, when the height of the housing 100 is set to 5cm, the sensing end of the temperature sensor 400 is positioned at a height of 3cm from the bottom surface of the housing 100. In this embodiment, the temperature sensor 400 is a temperature sensor. The first control valve 210, the second control valve 320, and the temperature sensor are all electrically connected to the existing DCS system in the paper mill.

[0038] like Figure 1 As shown, a discharge pipe 130 is connected to the second end of the housing 100, and the wall of the discharge pipe 130 is provided with a heat-resistant layer. The discharge pipe 130 is designed to discharge steam and also to drain the water after the steam inside the housing 100 has liquefied upon cooling. Based on this, the discharge pipe 130 is connected near the bottom surface of the housing 100 to facilitate the timely discharge of liquefied water and prevent its accumulation. Specifically, the discharge pipe 130 can be connected to a drainage ditch.

[0039] like Figure 1 As shown, the connector 500 includes a hook 510 and a connecting rod 520. The hook 510 is connected to the outer wall of the housing 100 via the connecting rod 520, and the hook 510 is located above the housing 100. In this embodiment, the hook 510 has an inverted U-shaped structure, and the hook 510 and the connecting rod 520 can be integrally formed. Specifically, multiple connectors 500 can be provided, and the multiple connectors 500 are evenly distributed on the side edge of the housing 100 with the flange 110. Four to eight connectors 500 can be provided on the upper surface of the housing 100, preferably six, with three on each of the front and rear side edges of the housing 100.

[0040] The working principle of the walkway heating device in this embodiment is as follows:

[0041] A temperature sensor monitors the temperature inside chamber 100 in real time and feeds it back to the DCS system. The DCS system controls the opening of the first control valve 210, prioritizing the use of surplus hot air from the ventilation hood for basic heating. When the detected temperature is below the dew point threshold, such as below 35°C, the DCS system controls the opening of the second control valve 320 to initiate steam-assisted heating, thereby dynamically stabilizing the temperature inside chamber 100 above the dew point threshold. Conversely, when the temperature sensor detects that the temperature inside chamber 100 is higher than the set maximum temperature threshold, the first control valve 210 and / or the second control valve 320 can be closed to prevent the temperature inside chamber 100 from continuously rising. In this embodiment, the surplus hot air from the papermaking process is utilized first, and steam-assisted heating is only initiated during peak moisture periods, effectively overcoming the imbalance between energy consumption and anti-condensation effect.

[0042] Example 2

[0043] This embodiment is a second embodiment of a platform heating device. Similar to the first embodiment, the difference lies in that the upper surface of the housing 100 is sloped. This slope guides condensate droplets falling onto the upper surface of the housing 100 to collect or drain along the slope. Specifically, when the slope is such that one end of the upper surface of the housing 100 is higher than the other end, the condensate on the housing 100 can flow along the slope and drain from one end, facilitating collection. When the slope is such that the middle of the upper surface of the housing 100 is lower than the outer perimeter, the condensate on the housing 100 can collect on the housing 100, reducing the amount of condensate dripping. When the slope is such that the middle of the upper surface of the housing 100 is higher than the outer perimeter, it accelerates the drainage of condensate from the upper surface of the housing 100 to the outside, preventing excessive water droplets from accumulating on the upper surface of the housing 100.

[0044] Example 3

[0045] This embodiment is a third embodiment of a platform heating device. This embodiment is similar to Embodiment 1 or 2, except that, as shown in the following... Figure 3 and Figure 4 As shown, the connecting rod 520 is a telescopic connecting rod. Specifically, the telescopic connecting rod includes a vertically arranged first rod 521 and a second rod 522. A hook 510 is fixed to the upper end of the first rod 521. The second rod 522 has an oblong hole 523 extending vertically, and a locking member 524 is also provided at the oblong hole 523. The first rod 521 can be locked in the oblong hole 523 by the locking member 524, thereby realizing the locking of the telescopic connecting rod. Specifically, the locking member 524 can be a bolt or nut. Furthermore, the second rod 522 can be configured as an L-shaped structure, with one side of the L-shaped structure fixed to the upper surface of the housing 100, and the oblong hole 523 located on the other side of the L-shaped structure.

[0046] Since there are multiple connectors 500, the box 100 can be adjusted to have its upper surface parallel to the ground by simultaneously adjusting each telescopic connecting rod to the same height position, or it can be adjusted to have its upper surface tilted by adjusting each telescopic connecting rod to different height positions, so as to facilitate the drainage of condensate from the upper surface and inside the box 100.

[0047] Example 4

[0048] like Figure 5 The illustration shows an embodiment of an operating platform according to the present invention, including a platform base 610, multiple support rods 620 connected to the bottom of the platform base 610, and railings 630 provided on the platform base 610; it also includes a platform heating device as described in any of embodiments one to three. A housing 100 is hooked to the edge of the platform base 610 via hooks 510 of a connector 500, so that the housing 100 is located directly below the platform base 610 and close to the bottom of the platform base 610. The upper surface of the housing 100 can be configured to either contact the bottom of the platform base 610 or have a certain gap between the upper surface of the housing 100 and the bottom of the platform base 610. In this embodiment, placing the housing 100 directly below the platform base 610 prevents condensation and avoids the impact on production quality caused by condensate dripping onto the paper web.

[0049] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A platform heating device, characterized in that, The device includes a housing (100), a hot air duct (200), and a steam duct (300), both of which are connected to the interior of the housing (100) and are equipped with a conduction control component; it also includes a temperature sensor (400), the sensing end of which extends into the housing (100); the housing (100) is also equipped with several connectors (500).

2. The platform heating device according to claim 1, characterized in that, The upper surface of the housing (100) is provided with a flange (110).

3. The platform heating device according to claim 1, characterized in that, The upper surface of the box (100) is sloped.

4. The platform heating device according to claim 1, characterized in that, The first end of the housing (100) is connected to a first conduit (120), and the hot air conduit (200) is connected to the inside of the housing (100) through the first conduit (120); the steam conduit (300) is connected to a nozzle (310), and the nozzle (310) is connected to the first conduit (120); the distance between the nozzle (310) and the housing (100) is less than the distance between the hot air conduit (200) and the housing (100).

5. The platform heating device according to any one of claims 1 to 4, characterized in that, The second end of the housing (100) is connected to a discharge pipe (130), and the wall of the discharge pipe (130) is provided with a heat-resistant layer.

6. The platform heating device according to any one of claims 1 to 4, characterized in that, It also includes a steam generator connected to the steam duct (300); the hot air duct (200) is used to connect to the ventilation hood.

7. The platform heating device according to any one of claims 1 to 4, characterized in that, The conduction control device includes a first control valve (210) connected to the hot air duct (200) and a second control valve (320) connected to the steam duct (300); the sensing end of the temperature sensor (400) is located away from the hot air duct (200) and / or the steam duct (300); the first control valve (210), the second control valve (320), and the temperature sensor (400) are all used for communication connection with the DCS system.

8. The platform heating device according to any one of claims 1 to 4, characterized in that, The connector (500) includes a hook (510) and a connecting rod (520). The hook (510) is connected to the outer wall of the box (100) through the connecting rod (520). The hook (510) is located above the box (100).

9. The platform heating device according to claim 8, characterized in that, The connecting rod (520) is a telescopic connecting rod.

10. An operating platform, comprising a platform base (610) and a plurality of support rods (620) connected to the bottom of the platform base (610), characterized in that, It also includes a walkway heating device as described in any one of claims 1 to 9, wherein the housing (100) is connected to the lower part of the walkway base frame (610) via the connector (500), and the housing (100) is disposed near the bottom of the walkway base frame (610).

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