Weighing hopper dynamic decoupling device based on diameter gradient disengagement

Abstract

The utility model belongs to the technical field of steelmaking, and relates to a weighing hopper dynamic decoupling device based on diameter gradient disengagement, which is characterized in that a direct connection fixed material guide articulated chute and a blanking articulated chute of a weighing hopper adopt a diameter gradient hard disengagement structure, so that the weighing hopper is ensured not to be influenced by the fixed articulated chute, and the weighing is accurate; a trumpet-shaped flow guide opening is formed in the top end of the discharging elephant trunk, the guiding effect is achieved, installation is convenient, and the construction efficiency is improved; the insertion depth of the directly-connected fixed material guide articulated chute and the blanking articulated chute is sufficient, and a blanking point is far away from a canvas flexible connection position, so that the problems of material blockage and material stacking are effectively avoided. Meanwhile, a double-layer canvas sealing device is adopted at the joint, dust raising is prevented, and the durability and reliability of the device are enhanced. Dynamic decoupling is achieved through the diameter gradient disengaging design, the problems that flexible connection of a traditional weighing hopper and a discharging elephant trunk is prone to failure, material blocking, dust raising and the like are solved, and a solution which is simple in structure, convenient and fast to install, accurate in weighing, efficient and reliable is provided for steelmaking production.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steelmaking, and relates to a weighing hopper dynamic decoupling device based on diameter gradient disengagement. BACKGROUND

[0002] In the technical field of steelmaking, the weighing hopper, as the core component of the entire feeding system, its accuracy and stability play a crucial role in ensuring the efficiency and quality of steelmaking production. The precise weighing of the weighing hopper can ensure the accurate proportioning of steelmaking raw materials, which directly affects the stability of the steelmaking process and the quality of the final product. However, the traditional design of the weighing hopper has exposed a series of problems in the connection method and actual application, which not only affects the weighing accuracy of the weighing hopper, but also has a negative impact on the efficiency and cost of the entire steelmaking production.

[0003] The traditional design of the weighing hopper usually adopts a soft connection to connect with the discharge chute. Although this connection method achieves the connection function of the weighing hopper and the discharge chute to some extent, it exposes a series of problems in actual application. First of all, the failure of the soft connection becomes a key factor restricting the accuracy and stability of the weighing hopper. Since the soft connection is usually made of flexible materials such as rubber and canvas, these materials are easily affected by environmental factors such as temperature, humidity, corrosion, etc. during long-term use, which leads to material aging, wear and tear, or improper connection, etc. Once the soft connection fails, a rigid connection will be formed between the weighing hopper and the discharge chute, and this unexpected rigid connection will introduce additional force and vibration, which will in turn cause deviation in the weighing result of the weighing hopper. This deviation will not only lead to inaccurate proportioning of steelmaking raw materials, but also may have a serious negative impact on the stability of the steelmaking process and the quality of the final product.

[0004] Secondly, the problem of material jamming and piling at the soft connection is also a major headache in the traditional design of the weighing hopper. Since the inner diameter of the soft connection is the same as that of the discharge chute, when the material passes through the soft connection into the discharge chute, it is easy to cause material jamming or piling at the soft connection due to factors such as changes in flow rate, differences in material properties, and elasticity of the soft connection itself. This not only causes poor flow of the material, affecting the continuity of the steelmaking production, but also increases the cost and labor demand of manual cleaning. More seriously, the long-term accumulation of material may further damage the soft connection, thereby shortening its service life and increasing the cost of replacement and maintenance.

[0005] In addition, the soft connection design of the traditional weighing hopper also has the hidden danger of dust raising. In the steelmaking production process, when the material passes through the soft connection into the discharging chute, if the soft connection produces gaps due to material blockage and material accumulation, or is damaged due to long-term material blockage and material accumulation, the changes in flow rate and pressure will cause the fine powder of the material to escape from the gaps, forming dust raising. These dust raising not only pollutes the production environment, affects the health of the operators and the quality of the working environment, but also can corrode and damage the steelmaking equipment, increasing the cost of equipment maintenance and replacement. At the same time, the dust raising problem can also interfere with the continuity and stability of the steelmaking production, further increasing the production cost and risk.

[0006] In summary, the soft connection design of the traditional weighing hopper has many deficiencies and problems to be solved in the field of steelmaking technology. These problems not only affect the weighing accuracy and stability of the weighing hopper, but also have adverse effects on the efficiency, cost and environment of the entire steelmaking production. Therefore, it is urgent to propose a new connection method of the weighing hopper and the discharging chute to solve the problems of inaccurate weighing accuracy, material blockage and dust pollution in the prior art. Content of the utility model

[0007] Therefore, the purpose of the utility model is to provide a weighing hopper dynamic decoupling device based on diameter gradient decoupling, which can realize smooth material flow guiding, dynamic displacement compensation and efficient sealing while completely decoupling the mechanical constraints between the weighing hopper and the discharging chute, and completely eliminate the risk of material blockage.

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a weighing hopper dynamic decoupling device based on diameter gradient decoupling, comprising a weighing hopper, a straight connection fixed material guiding chute and a discharging chute, the straight connection fixed material guiding chute is fixedly connected to the lower opening of the weighing hopper, the top end of the discharging chute is provided with a horn-shaped flow guiding port, and the straight connection fixed material guiding chute is inserted into the horn-shaped flow guiding port to form a plug-in structure; a double-layer canvas sealing device is arranged at the connection position of the straight connection fixed material guiding chute and the discharging chute; a radial gap is arranged between the straight connection fixed material guiding chute and the horn-shaped flow guiding port of the discharging chute, and the insertion depth of the straight connection fixed material guiding chute is greater than 200mm.

[0009] Optionally, the upper end of the straight connection fixed material guiding chute is connected to the plug-in valve at the lower end of the weighing hopper through a flange.

[0010] Optionally, the discharging chute is fixed to the lower platform of the weighing hopper through a support seat.

[0011] Optionally, the top end of the discharging chute is provided with a horn-shaped flow guiding port with a taper angle of 10°-15°, the straight connection fixed material guiding chute is inserted into the discharging chute, at the intersection, the cooperation gap δ between the inner diameter of the flow guiding port and the outer diameter of the fixed chute satisfies: 10mm≤δ≤20mm.

[0012] Optionally, the depth h of the directly connected fixed material guide chute inserted into the discharge chute satisfies 200mm≤h≤500mm.

[0013] Optionally, the lower end of the directly connected fixed material guide chute and the upper port of the discharge chute are respectively provided with flanges, and the inner diameter of the flanges is consistent with the inner diameter of the trumpet-shaped flow guide port of the discharge chute.

[0014] Optionally, the two ends of the double-layer canvas sealing device are respectively matched and fixedly connected with the flanges of the directly connected fixed material guide chute and the discharge chute through the self-provided flanges, and the length L of the double-layer canvas sealing device satisfies 150mm≤L≤300mm.

[0015] Optionally, the double-layer canvas sealing device allows axial displacement of ±10mm to ±20mm.

[0016] Optionally, the inner walls of the directly connected fixed material guide chute and the discharge chute are lined with a wear-resistant material layer.

[0017] The beneficial effects of the utility model lie in:

[0018] 1) improve the weighing accuracy: the device adopts the plug-in type diameter gradient hard breakaway structure of the directly connected fixed material guide chute and the trumpet port discharge chute, realizes the complete breakaway of the weighing hopper and the discharge chute, avoids the rigid connection problem caused by the failure of the soft connection, and significantly improves the weighing accuracy of the weighing hopper; this design ensures the accurate proportioning of the steelmaking raw materials, helps to improve the stability of the steelmaking process and the quality of the final product;

[0019] 2) reduce the material blocking and stacking phenomenon: the traditional soft connection design is prone to material blocking or stacking at the connection, and the device optimizes the plug-in mode of the material guide chute and the discharge chute, and sets a reasonable fitting gap and insertion depth, effectively avoiding the accumulation and blocking of materials at the connection; this not only reduces the cost and labor demand of manual cleaning, but also improves the continuity and efficiency of steelmaking production;

[0020] 3) suppress dust pollution: the device is provided with a double-layer canvas sealing device at the connection between the directly connected fixed material guide chute and the discharge chute, the sealing device is not easy to block and stack materials, and has a long service life; this design not only has good sealing performance, but also effectively suppresses the dust problem during discharging; this helps to improve the production environment, protect the health of the operating personnel, reduce the corrosion and damage of the steelmaking equipment, and reduce the cost of equipment maintenance and replacement;

[0021] 4) Enhanced durability and stability: By lining the material guide chute and the discharge chute with wear-resistant materials, the durability of the device is significantly improved. This design prolongs the service life of the device, reduces the frequency of replacement and maintenance due to wear and tear, thereby reducing production costs; at the same time, the design of the hard disengagement structure also enhances the stability of the device, improves the reliability and safety of steelmaking production;

[0022] 5) Simplified installation and maintenance: The structural design of the device is reasonable, and the installation process is simple and fast; at the same time, due to the reduction of the use of soft connections and other vulnerable parts, the maintenance cost of the device is also reduced; in addition, the double-layer canvas sealing device allows a certain axial displacement, which helps to adapt to small changes under different working conditions, further improving the adaptability and stability of the device.

[0023] In summary, a dynamic decoupling device based on diameter gradient disengagement in the field of steelmaking technology has significant beneficial effects, not only improving the weighing accuracy and production efficiency, but also reducing the problems of material jamming, material stacking and dust pollution, etc., providing a more reliable and efficient solution for steelmaking production.

[0024] The other advantages, objectives and features of the present application will be described to some extent in the subsequent specification, and to some extent, it will be obvious to those skilled in the art based on the study of the following text or can be taught from the practice of the present application. The objectives and other advantages of the present application can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to make the purposes, technical solutions and advantages of the present application clearer, the preferred detailed description of the present application will be described below with reference to the accompanying drawings, in which:

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

[0027] Figure 2 is Figure 1 is an enlarged view of A.

[0028] Reference signs: weighing hopper 1, direct connection fixed material guide chute 2, double-layer canvas sealing device 3, discharge chute 4. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below with specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the present application. The present application can also be implemented or applied in other different specific embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present application. It should be noted that the drawings provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and the following examples and features in the examples can be combined with each other without conflict.

[0030] The drawings are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and should not be understood as a limitation on the present application; in order to better illustrate the embodiments of the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0031] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and should not be understood as a limitation on the present application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0032] Please refer to Figures 1-2 , a dynamic decoupling device for a weighing hopper based on diameter gradient disengagement, mainly comprising a weighing hopper 1, a directly connected fixed material guide chute 2, a double-layer canvas sealing device 3 and a discharging chute 4, and the overall structure is as shown in Figure 1 .

[0033] 1. Specific structural composition:

[0034] Weighing hopper 1: as the core component of the steelmaking feeding system, used for accurately weighing the steelmaking raw materials to ensure accurate proportioning of the raw materials.

[0035] Directly connected fixed material guide chute 2: the upper end is tightly connected with the plug valve at the lower end of the weighing hopper 1 through a flange, the lower end is inserted into the horn-shaped flow guide port of the discharging chute 4, forming a stable plug-in structure, responsible for smoothly guiding the material in the weighing hopper 1 into the discharging chute 4.

[0036] Double-layer canvas sealing device 3: It is arranged at the connection between the directly connected fixed material guide chute 2 and the material discharging chute 4, adopts a double-layer canvas structure, has good sealing performance, and effectively prevents dust and material leakage.

[0037] Material discharging chute 4: The top end is provided with a horn-shaped flow guide port, and is in plug-in cooperation with the directly connected fixed material guide chute 2, and is responsible for receiving and conveying the material to the next process.

[0038] 2. Structural details and embodiments

[0039] Connection between the directly connected fixed material guide chute 2 and the weighing hopper 1:

[0040] The upper end of the directly connected fixed material guide chute 2 is connected with the plug-in valve at the lower end of the weighing hopper 1 through a flange, so as to ensure the firmness and sealing performance of the connection. The flange connection adopts standard bolt fastening, which is convenient for disassembly and maintenance.

[0041] Design of the horn-shaped flow guide port of the material discharging chute 4:

[0042] The top end of the material discharging chute 4 is provided with a horn-shaped flow guide port with a taper angle of 12° (or other angles within the range of 10°-15° according to actual needs), and the inner diameter thereof is slightly larger than the outer diameter of the directly connected fixed material guide chute 2, so as to form a certain fitting gap δ, which satisfies 10mm≤δ≤20mm. This design not only ensures that the material can smoothly pass through, but also avoids the material jamming and piling at the connection.

[0043] Installation and adjustment of the double-layer canvas sealing device 3:

[0044] The two ends of the double-layer canvas sealing device 3 are respectively matched and fixedly connected with the flanges of the directly connected fixed material guide chute 2 and the material discharging chute 4 through the self-provided flanges. The length L of the sealing device is designed to be 200mm (or other lengths within the range of 150mm≤L≤300mm according to actual needs), and is allowed to have an axial displacement of ±15mm (or other displacement amounts within the range of ±10mm-±20mm according to actual needs). This design not only ensures the sealing performance of the connection, but also can adapt to the slight changes under different working conditions, such as the slight vibration of the weighing hopper or thermal expansion and cold contraction.

[0045] Insertion depth of the directly connected fixed material guide chute 2:

[0046] The insertion depth h of the directly connected fixed material guide chute 2 into the material discharging chute 4 is designed to be 300mm (or other depths within the range of 200mm≤h≤500mm according to actual needs). The sufficient insertion depth ensures the smooth flow of the material at the connection, avoids the occurrence of material jamming and piling at the double-layer canvas sealing device, and at the same time enhances the stability of the connection.

[0047] Setting of the wear-resistant material layer:

[0048] In order to improve the durability and service life of the device, the inner walls of the directly connected fixed material guide chute 2 and the material discharge chute 4 are lined with a wear-resistant material layer, such as ceramic, alloy or high molecular wear-resistant material, etc. This design effectively reduces the wear of the material on the chute and prolongs the service life of the device.

[0049] 3. Working principle

[0050] In use, the weighing hopper 1 first accurately weighs the steelmaking raw materials, then opens the plug valve, and the materials are smoothly guided into the horn-shaped flow guide opening of the material discharge chute 4 through the directly connected fixed material guide chute 2. Since the directly connected fixed material guide chute 2 and the material discharge chute 4 adopt a plug-in type diameter gradient hard disconnection structure, and the connecting part is provided with a double-layer canvas sealing device 3, the material will not be blocked and stacked when passing through the connecting part, and the dust problem is also effectively inhibited. The good sealing performance of the double-layer canvas sealing device 3 ensures the cleanliness of the production environment and the health of the operators. The material is smoothly conveyed to the next process under the guidance of the material discharge chute 4, ensuring the continuity and stability of the steelmaking production.

[0051] Through the description of the above specific embodiments, the significant advantages and application prospects of the weighing hopper dynamic decoupling device based on diameter gradient disconnection in the field of steelmaking technology can be clearly seen. The device not only improves the weighing accuracy and production efficiency, but also effectively solves the problems of material blocking and stacking, dust pollution and the like, and provides a more reliable and efficient solution for steelmaking production.

[0052] Finally, it should be pointed out that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. A dynamic decoupling device for a weighing hopper based on diameter gradient separation, characterized in that: It includes a weighing hopper, a direct-connected fixed material guide pipe and a discharge pipe. The direct-connected fixed material guide pipe is fixedly connected to the lower opening of the weighing hopper. The top of the discharge pipe is provided with a funnel-shaped guide port. The direct-connected fixed material guide pipe is inserted into the funnel-shaped guide port to form a plug-in structure. The connection between the direct-connect fixed material guide chute and the discharge chute is provided with a double-layer canvas sealing device; a radial gap is provided between the funnel-shaped guide opening of the direct-connect fixed material guide chute and the discharge chute, and the insertion depth of the direct-connect fixed material guide chute is greater than 200mm.

2. The dynamic decoupling device for a weighing hopper based on diameter gradient separation according to claim 1, characterized in that: The upper end of the direct-connect fixed feed chute is connected to the slide valve at the lower end of the weighing hopper via a flange.

3. The dynamic decoupling device for a weighing hopper based on diameter gradient separation according to claim 1, characterized in that: The feeding chute is fixed to the lower platform of the weighing hopper by a support.

4. The dynamic decoupling device for a weighing hopper based on diameter gradient separation according to claim 1, characterized in that: The top of the discharge chute is provided with a funnel-shaped guide port with a cone angle of 10°-15°. The direct connection to the fixed guide chute is inserted into the discharge chute. At the intersection, the fitting clearance δ between the inner diameter of the guide port and the outer diameter of the fixed chute satisfies: 10mm≤δ≤20mm.

5. The dynamic decoupling device for a weighing hopper based on diameter gradient separation according to claim 1, characterized in that: The depth h of the direct-connected fixed guide chute inserted into the discharge chute satisfies 200mm≤h≤500mm.

6. The dynamic decoupling device for a weighing hopper based on diameter gradient separation according to claim 1, characterized in that: The lower end of the direct-connected fixed material guide chute and the upper end of the discharge chute are respectively provided with flanges, and the inner diameter of the flanges is consistent with the inner diameter of the trumpet-shaped guide port of the discharge chute.

7. The dynamic decoupling device for a weighing hopper based on diameter gradient separation according to claim 6, characterized in that: The two ends of the double-layer canvas sealing device are respectively matched and fixedly connected to the flanges of the direct-connect fixed guide chute and the discharge chute through their own flanges, and the length L of the double-layer canvas sealing device satisfies 150mm≤L≤300mm.

8. The dynamic decoupling device for a weighing hopper based on diameter gradient separation according to claim 1, characterized in that: The double-layer canvas sealing device allows for axial displacement of ±10mm to ±20mm.

9. The dynamic decoupling device for a weighing hopper based on diameter gradient separation according to claim 1, characterized in that: The inner walls of both the direct-connection fixed feed chute and the discharge chute are lined with a wear-resistant material layer.

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