Self-cooling casting blank roller way weighing device and continuous casting machine thereof

Abstract

The utility model relates to a self-cooling casting blank roller way weighing device and a continuous casting machine thereof, the self-cooling casting blank roller way weighing device comprises an upper support assembly, a lower support assembly, a side plate assembly, a cooling assembly and a weighing assembly; the upper supporting assembly is arranged below the roller way; the upper supporting assembly, the lower supporting assembly and the side plate assembly form a closed cavity. The weighing assembly is arranged in the closed cavity and used for weighing the weight of the casting blank; the cooling assembly comprises a cold air inlet formed in the lower supporting assembly and an air channel formed in the upper portion of the side plate assembly. Cooling gas is filled into the closed cavity through the cold gas inlet and flows out through the gas channel. The utility model discloses a self-cooling casting blank roller way weighing device, which can efficiently cool and dissipate heat, protect a weighing structure and improve the accuracy and stability of a casting blank weighing result.

Description

Technical Field

[0001] The utility model belongs to the technical field of weighing, in particular to a self-cooling billet roller weighing device and a continuous casting machine thereof. Background Art

[0002] During the continuous casting process, the continuous, uninterrupted flow of cast steel billets is cut to length online, the final step in the process. However, due to factors such as mold wear, molten steel pressure, and casting speed that affect product size and density, the weight of billets of the same length cast at different times within the same continuous casting stream can vary significantly. This difference prevents the continuous casting billets from being weighed exactly when they are rolled in the next rolling process, resulting in billets that are either too short or too long. This directly affects the yield rate of the rolled steel, significantly reducing production efficiency and the company's economic benefits.

[0003] Chinese patent document CN111457996A discloses an accessible hidden weighing device for continuous casting steel billets. This patent document does not provide a corresponding protective device for the weighing sensor. During the continuous casting process, the temperature of the billet is high, exceeding 600°C. The high temperature can easily damage the weighing sensor itself, resulting in inaccurate measurement accuracy of the weighing results.

[0004] Therefore, how to provide a weighing device that can efficiently cool and dissipate heat, protect the weighing structure, and improve the accuracy and stability of the billet weighing results is an urgent problem to be solved in this field. Utility Model Content

[0005] In order to solve at least one of the above technical problems, the present invention provides a self-cooling billet roller weighing device, comprising:

[0006] Upper support assembly, lower support assembly, side plate assembly, cooling assembly and weighing assembly;

[0007] The upper support assembly is arranged below the roller conveyor;

[0008] The upper support assembly, the lower support assembly and the side plate assembly form a closed cavity;

[0009] The weighing assembly is arranged in the closed cavity and is used to weigh the weight of the casting;

[0010] The cooling assembly includes: a cold air inlet arranged on the lower support assembly and an air duct arranged on the upper part of the side plate assembly; the cooling gas is filled into the closed cavity through the cold air inlet and flows out through the air duct.

[0011] Further, the side panel assembly includes: a side panel arranged on the inner side and a heat insulation shield arranged on the outer side;

[0012] The heat insulation cover comprises an outer cover, a heat radiation protection cloth and an inner cover.

[0013] Furthermore, the air duct is arranged from top to bottom between the outer side of the side plate and the inner side of the heat insulation shield.

[0014] Furthermore, the cooling assembly further includes: a liquid cooling member provided on the upper support assembly;

[0015] The liquid cooling component includes a cooling liquid inlet, a circulation pipeline arranged meanderingly on the upper support assembly, and a cooling liquid outlet.

[0016] Furthermore, the cooling assembly further includes: a first temperature sensor arranged in the closed cavity and / or a second temperature sensor arranged at the coolant inlet and the coolant outlet.

[0017] Furthermore, the weighing assembly includes: a weighing sensor and a self-returning member arranged around the weighing sensor.

[0018] Furthermore, the self-returning member includes a V-shaped plate and an elastic element; the elastic element is arranged between the V-shaped plate and the weighing sensor.

[0019] Furthermore, the self-cooling casting roller weighing device further includes: a buffer assembly disposed between the upper support assembly and the lower support assembly;

[0020] The maximum buffer distance of the buffer assembly is less than the maximum safe stroke of the self-returning component.

[0021] Furthermore, the weighing components are divided into two groups, with several components in each group, which are symmetrically arranged on both sides of the buffer component.

[0022] A continuous casting machine, comprising: a weighing device and a conveying roller;

[0023] The weighing device is arranged below the conveyor roller;

[0024] The weighing device is any one of the above-mentioned self-cooling billet roller weighing devices.

[0025] In this embodiment, a self-cooling billet roller weighing device is provided. An upper support assembly is disposed beneath the roller to support the billet's weight and transfer it to the weighing assembly. Because the billet production process generates a high level of dust and scattered, scattering billet waste in the surrounding environment, the upper support assembly, lower support assembly, and side panel assembly form a closed chamber. The weighing assembly is disposed within this closed chamber, effectively isolating the surrounding dust, billet waste, and moisture. This reduces the interference and erosion of external factors such as dust, billet waste, and moisture on the weighing assembly, extending the service life of the weighing device and improving the stability of the weighing results. A cold air inlet is provided on the lower support assembly. Cold air is blown into the closed chamber through the cold air inlet and out through the air duct on the upper portion of the side panel assembly. This effectively controls the internal temperature of the weighing device, reduces thermal expansion or contraction caused by temperature fluctuations, and mitigates any adverse effects on key components of the weighing assembly, thereby improving weighing accuracy and stability. This is crucial for production processes requiring precise control of billet weight. At the same time, the cold air inlet is set on the lower support assembly, and the air duct is set above the side panel assembly. Since the density of cold air is greater than that of hot air, cold air can be deposited at the bottom, gradually filling the closed cavity from the bottom up, which can fully ensure the cooling of the weighing components in the closed cavity. The cold air is isolated from the heat convection generated by the surrounding environment, achieving a better cooling effect. In summary, the self-cooling billet roller weighing device in this solution can effectively cool and dissipate heat, protect the weighing structure, and improve the accuracy and stability of billet weighing results. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be derived based on the structures shown in these drawings without inventive effort. In the drawings, the same parts are marked with the same reference numerals. The drawings are not drawn to scale.

[0027] Figure 1 This is a schematic diagram of an embodiment of a self-cooling billet roller weighing device of the present invention;

[0028] Figure 2 This is a front cross-sectional view of an embodiment of a self-cooling casting roller weighing device of the utility model;

[0029] Figure 3 This is a partial schematic diagram of an embodiment of a self-cooling casting roller weighing device of the utility model. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0032] It should also be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly. In addition, if the embodiments of the present invention involve descriptions such as "first, second", "S1, S2", "step one, step two", etc., such descriptions are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features or indicating the execution order of the method, etc. Those skilled in the art can understand that anything that does not violate the key points of the utility model under the technical concept of the utility model should be included in the scope of protection of the utility model.

[0033] The utility model provides a self-cooling billet roller weighing device, referring to Figure 1-3 , including: an upper support assembly 1, a lower support assembly 2, a side plate assembly 3, a cooling assembly 4 and a weighing assembly 5;

[0034] The upper support assembly 1 is arranged below the roller conveyor;

[0035] The upper support assembly 1, the lower support assembly 2 and the side panel assembly 3 form a closed cavity;

[0036] The weighing assembly 5 is arranged in the closed cavity and is used to weigh the weight of the casting;

[0037] The cooling assembly 4 includes: a cold air inlet 41 arranged on the lower support assembly 2 and an air duct 42 arranged on the upper part of the side plate assembly 3; the cooling gas is filled into the closed cavity through the cold air inlet 41 and flows out through the air duct 42.

[0038] In this embodiment, a self-cooling billet roller weighing device is provided, wherein an upper support assembly is arranged below the roller, for supporting the weight of the billet and transferring it to the weighing assembly. Since there is a lot of dust and scattered billet waste slag in the surrounding environment during the billet production and processing, the upper support assembly, the lower support assembly and the side plate assembly form a closed cavity, and the weighing assembly is arranged in the closed cavity. On the one hand, it can effectively isolate the dust, billet waste slag and water vapor in the surrounding environment, reduce the interference and erosion of external factors such as dust, billet waste slag and water vapor on the weighing assembly, extend the service life of the weighing device, and improve the stability of the weighing results. On the other hand, a cold air inlet is provided on the lower support assembly, and cold air is blown into the closed cavity through the cold air inlet and blown out from the air duct on the upper part of the side plate assembly. The internal temperature of the weighing device is effectively controlled, the thermal expansion or contraction caused by temperature changes is reduced, and the adverse effects on the key components of the weighing assembly are reduced, thereby improving the accuracy and stability of weighing, which is crucial for production processes that require precise control of the billet weight. The temperature change here is, on the one hand, due to the high temperature of the ingot itself during the production and processing, which is transmitted to the weighing device and causes temperature changes; on the other hand, it is due to changes in ambient temperature, such as temperature changes caused by weather changes; the added cooling structure can prevent the weighing device from being in an overly high temperature environment. At the same time, the cold air inlet is set on the lower support assembly, and the air duct is set above the side panel assembly. Since the density of cold air is greater than that of hot air, cold air can be deposited below and gradually fill the closed cavity from bottom to top, which can fully ensure the cooling of the weighing assembly in the closed cavity, and use cold air to isolate the heat convection generated by the surrounding environment to achieve a better cooling effect. In summary, the self-cooling ingot roller weighing device in this scheme can efficiently cool and dissipate heat, protect the weighing structure, and improve the accuracy and stability of the ingot weighing results. It is worth noting that the key to the present invention is to add a closed cavity and a cooling structure to achieve the purpose of self-cooling. The specific structure of its weighing device and the weighing method can adopt any method of the existing technology, which will not be repeated here.

[0039] Preferably, reference Figure 1 A lifting ring 1a is provided above the upper support assembly 1, and the lifting and moving device can move the self-cooling casting roller weighing device through the lifting ring 1a, thereby improving the mobility of the weighing device. More preferably, the lifting rings are symmetrically arranged in pairs on the upper support assembly 1, thereby improving the stability of the lifting and moving of the weighing device during the lifting and moving process.

[0040] Preferably, reference Figure 1 and Figure 2 The side panel assembly 3 includes a side panel 31 arranged on the inner side and a heat insulation shield 32 arranged on the outer side.

[0041] In this embodiment, the side panel assembly includes: a side panel arranged on the inner side and a heat-insulating shield arranged on the outer side; the inner side panel is used to isolate the heat convection generated by the ambient temperature and the high temperature of the ingot itself; the heat-insulating shield is used to isolate the heat radiation and heat conduction generated by the ambient temperature and the high temperature of the ingot itself. This double-layer design of the side panel and the heat-insulating shield can achieve a better heat-insulating effect. More preferably, the heat-insulating shield includes: an outer shield, a heat-proof radiation cloth and an inner shield; the outer shield is used to protect the heat-proof radiation cloth from erosion by water vapor, ingot waste slag and dust in the external environment, thereby increasing the service life of the heat-insulating shield; the heat-proof radiation cloth has several layers, which are used to isolate the heat radiation generated by the ambient temperature and the high temperature of the ingot itself, reduce the erosion and interference of the ambient temperature and the high temperature of the ingot itself on the weighing assembly, and improve the accuracy and stability of the weighing results of the ingot by the weighing assembly. For example, in this technical solution, the outer shield is a 2mm thick stainless steel plate, the anti-thermal radiation cloth has 5 layers, each layer is 0.8mm, and the inner shield is a 5mm thick carbon steel plate; the outer shield is made of stainless steel plate, which can improve the ability of the thermal insulation shield to resist rust, and at the same time protect the inner anti-thermal radiation cloth; the anti-thermal radiation cloth adopts a five-layer design, which can better and more effectively improve the thermal insulation effect; the inner shield is made of 5mm carbon steel plate, which can improve the supporting strength of the thermal insulation shield, prevent the thermal insulation shield from deformation, and increase the service life of the thermal insulation shield.

[0042] More preferably, refer to Figure 2 The air duct 42 is arranged from top to bottom between the outer side of the side plate 31 and the inner side of the heat insulation shield 32.

[0043] In this embodiment, the air duct is arranged from top to bottom between the outer side of the side panel and the inner side of the thermal insulation shield. At this time, the inlet of the air duct is above the side panel assembly, and the outlet of the air duct is below the side panel assembly. The entire air duct is isolated and protected by the side panel, the thermal insulation shield and the upper support assembly, thereby avoiding dust and ingot waste slag from above and on the sides to block the air duct, thereby improving the service life of the weighing device.

[0044] Preferably, reference Figure 1 and Figure 2 , the cooling assembly 4 further includes: a liquid cooling member 43 provided on the upper support assembly 1;

[0045] The liquid cooling element 43 includes a cooling liquid inlet 43a, a circulation pipe 43b zigzagging on the upper support assembly, and a cooling liquid outlet 43c.

[0046] In this embodiment, since the temperature of the ingot transported on the roller conveyor is very high, the temperature of the ingot itself is often greater than 600°C. The high temperature of the ingot passes through the roller conveyor and transfers heat to the weighing device, causing the weighing device to overheat. In order to prevent the weighing device from being overheated and causing a reduction in accuracy or damage, a liquid cooling element is added to the upper support assembly. The liquid cooling element circulates coolant to remove the heat transferred from the ingot to the upper support assembly, effectively reducing the temperature of the weighing device itself and the surrounding environment, thereby ensuring that the weighing device can operate stably in a high-temperature environment. It is understood that the coolant can come from a coolant machine, an external coolant source, or a closed coolant circulation system, and those skilled in the art can set it up as needed. More preferably, the liquid cooling element 43 uses cooling water for water circulation cooling; cooling water is inexpensive, easy to prepare and store, and is non-toxic and harmless, which can greatly save costs and protect the environment. More preferably, the circulation conduit is a square tube integrally embedded in the upper portion of the upper support assembly. This embedding of the circulation conduit into the upper portion of the support assembly prevents coolant in the circulation conduit from leaking into the enclosed cavity below, thereby protecting the weighing device. Furthermore, the side surfaces and bottom of the square tube fully contact the upper support assembly, expanding the heat exchange area and achieving better cooling and heat dissipation. More preferably, the circulation conduit is constructed of a metal with good thermal conductivity, such as copper or stainless steel, for improved thermal conductivity and rust resistance.

[0047] More preferably, the cooling assembly 4 further includes: a first temperature sensor disposed in the closed cavity and / or a second temperature sensor disposed at the cooling liquid inlet 43a and the cooling liquid outlet 43c.

[0048] In this embodiment, a first temperature sensor is added in the closed cavity to detect the temperature inside the closed cavity, and a second temperature sensor is added at the coolant inlet and the coolant outlet to detect the temperature of the upper support assembly. When the temperature of the first temperature sensor and the second temperature sensor exceeds the set value, the flow rate and temperature of the cold air inlet and the coolant inlet corresponding to the cold air inlet and the coolant inlet are manually or / and automatically adjusted to avoid the temperature of the upper support assembly being too high and the excessive temperature being transferred to the inside of the closed cavity. At the same time, the temperature inside the closed cavity is avoided to be too high and the weighing assembly inside the closed cavity is damaged due to high temperature.

[0049] Preferably, reference Figure 2 and Figure 3 The weighing assembly 5 includes a weighing sensor 51 and a self-returning member 52 arranged around the weighing sensor.

[0050] In this embodiment, the weighing assembly includes a weighing sensor and a self-returning member arranged around the weighing sensor; when the billet enters the roller conveyor for weighing, the billet continuously moves on the roller conveyor and the rollers on the roller conveyor rotate, which will generate dynamic shock and vibration. In addition, during the production and processing of the billet, complex working conditions will also generate shock and vibration. These shocks and vibrations will directly affect the readings of the weighing sensor, resulting in measurement errors. The self-returning member can absorb or offset these shocks and vibrations to a certain extent, so that the weighing sensor can work in a more stable environment, ensuring that the center of gravity of the object being measured is at the center of the weighing sensor, thereby improving the accuracy and reliability of weighing. At the same time, long-term shock and vibration will not only affect the weighing accuracy, but also cause physical damage to the weighing sensor and its connecting components, shortening the service life of the device. As a buffer element, the self-returning member can share and reduce these impact forces, protect the weighing sensor and its surrounding structures from damage, thereby enhancing the durability and stability of the entire weighing device. For example, refer to Figure 2 The self-returning member 52 includes a V-shaped plate 52a and an elastic element 52b; the elastic element 52b is arranged between the V-shaped plate 52a and the weighing sensor 51; the V-shaped structure has a large opening at the top and a small opening at the bottom, so it can absorb part of the dynamic impact and vibration by utilizing its own deformation; at the same time, the elastic member arranged between the V-shaped plate and the weighing sensor further absorbs the dynamic impact and vibration, thereby achieving a better effect of reducing the dynamic impact and vibration.

[0051] Preferably, reference Figure 3 , the self-cooling billet roller weighing device further includes: a buffer assembly 6 arranged between the upper support assembly 1 and the lower support assembly 2;

[0052] In this embodiment, the self-cooling billet roller weighing device also includes a buffer assembly to further protect the weighing assembly. When the billet moves, dynamic impact and vibration are generated. The buffer assembly has a certain elastic deformation space to absorb and disperse the impact force. More preferably, the maximum buffering distance of the buffer assembly is less than the maximum safe travel of the self-returning member. When the dynamic impact exceeds the maximum buffering distance of the buffer assembly, the buffer assembly is completely blocked, thereby protecting the weighing sensor from impact and improving the detection accuracy and service life of the weighing sensor. Optionally, the buffer assembly is a component with a limit buffering function, such as a spring, a rubber cushion, or a buffer cylinder.

[0053] Preferably, the weighing components 5 are divided into two groups, with several components in each group, which are symmetrically arranged on both sides of the buffer component 6.

[0054] In this embodiment, the weighing components are divided into two groups, symmetrically arranged on either side of the buffer assembly. This symmetrical structure can offset some dynamic impact and vibration, improving the accuracy and stability of weighing. For example, the weighing components are divided into two groups, two in each group, symmetrically arranged on either side of the buffer assembly. The billet itself is a rectangular plate-like structure. The four weighing components form a weighing plane that can better withstand the weight of the billet, thereby avoiding the problem of inaccurate weighing of a single weighing component due to billet tilt or position change, and improving the stability and accuracy of the weighing device.

[0055] A continuous casting machine, comprising: a weighing device and a conveying roller;

[0056] The weighing device is arranged below the conveyor roller;

[0057] The weighing device is any one of the above-mentioned self-cooling billet roller weighing devices.

[0058] In this embodiment, a continuous casting machine is provided, in which a self-cooling billet roller weighing device is arranged below the conveyor roller. No additional lifting equipment is required. The billets are lifted onto the weighing device for weighing. The weighing can be completed synchronously while the billets are being transported on the conveyor roller, which greatly reduces the weighing time of the billets and improves the weighing efficiency of the billets.

[0059] The above-mentioned continuous casting machine is created based on the above-mentioned self-cooling casting roller weighing device. Its technical effects and technical features are not described in detail here. The above-mentioned embodiments only express several implementation methods of the utility model. The description is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the concept of the utility model, and these are all within the scope of protection of the utility model.

Claims

1. A self-cooling billet roller weighing device, characterized in that: include: Upper support assembly, lower support assembly, side plate assembly, cooling assembly and weighing assembly; The upper support assembly is arranged below the roller conveyor; The upper support assembly, the lower support assembly and the side plate assembly form a closed cavity; The weighing assembly is arranged in the closed cavity and is used to weigh the weight of the casting; The cooling assembly includes: a cold air inlet provided on the lower support assembly and an air duct provided on the upper portion of the side panel assembly; The cooling gas is filled into the closed cavity through the cooling gas inlet and flows out through the air duct.

2. The self-cooling casting roller weighing device according to claim 1, characterized in that: The side panel assembly comprises: a side panel arranged on the inner side and a heat insulation shield arranged on the outer side; The heat insulation cover comprises an outer cover, a heat radiation protection cloth and an inner cover.

3. The self-cooling casting roller weighing device according to claim 2, characterized in that: The air duct is arranged from top to bottom between the outer side of the side plate and the inner side of the heat insulation shield.

4. The self-cooling casting roller weighing device according to claim 1, characterized in that: The cooling assembly further includes: a liquid cooling member disposed on the upper support assembly; The liquid cooling component includes a cooling liquid inlet, a circulation pipeline arranged meanderingly on the upper support assembly, and a cooling liquid outlet.

5. The self-cooling casting roller weighing device according to claim 4, characterized in that: The cooling assembly further includes: a first temperature sensor arranged in the closed cavity and / or a second temperature sensor arranged at the coolant inlet and the coolant outlet.

6. The self-cooling casting roller weighing device according to claim 1, characterized in that: The weighing assembly includes a weighing sensor and a self-returning member arranged around the weighing sensor.

7. The self-cooling casting roller weighing device according to claim 6, characterized in that: The self-returning member includes: a "V"-shaped plate and an elastic element; the elastic element is arranged between the "V"-shaped plate and the weighing sensor.

8. The self-cooling casting roller weighing device according to claim 1, characterized in that: Also includes: A buffer assembly disposed between the upper support assembly and the lower support assembly; The maximum buffer distance of the buffer assembly is less than the maximum safe stroke of the self-returning component.

9. The self-cooling casting roller weighing device according to claim 1, characterized in that: The weighing components are divided into two groups, with a number of components in each group, which are symmetrically arranged on both sides of the buffer component.

10. A continuous casting machine, characterized in that: include: Weighing device and conveyor roller; The weighing device is arranged below the conveyor roller; The weighing device is the billet roller weighing device according to any one of claims 1 to 9.

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