Feeding adding device

Abstract

The utility model discloses a feeding and adding device, which belongs to the technical field of pellets, and comprises a conveying mechanism for conveying materials from an inlet to an outlet spaced from the inlet; the first valve is arranged on the feeding pipeline, and the feeding pipeline is communicated with an inlet of the conveying mechanism; and the discharging pipeline is used for discharging the materials, and the discharging pipeline communicates with an outlet of the conveying mechanism. According to the device, it can be ensured that in the adjusting process, the material adding amount does not fluctuate greatly, discharging is smooth and stable, and the purpose of improving the pellet binder adding stability is achieved; meanwhile, the production cost is reduced.

Description

Technical Field

[0001] This application belongs to the field of pellet technology, and particularly relates to a feeding and batching device. Background Technology

[0002] Iron ore pellets are spherical iron-containing raw materials with certain strength and metallurgical properties. They are produced by mixing finely ground iron concentrate powder or other iron-containing powders with a small amount of additives, then rolling them into pellets using a pelletizing machine while moistened with water. The pellets are then dried, roasted, and solidified. With the increasing emphasis on ecological environmental protection in China, the metallurgical industry has stricter requirements for controlling leaks and spills. As an important raw material for blast furnace ironmaking, iron ore pellets are produced continuously. During production, when there are significant dynamic adjustments in the amount of concentrate, insufficient binder addition can severely affect the pelletizing range, dry pellet strength, and bursting temperature of the mixture. Conversely, excessive binder addition not only reduces the roasting and solidification rate of the pellets but also decreases the product porosity and micropore distribution, leading to a decline in the reducibility of the pellets.

[0003] Existing conveyor belt scales or screw scales, while capable of continuous weighing or quantitative feeding of materials, require correction based on various parameters to ensure accuracy and precision. This makes it difficult to achieve accurate feeding control and is not suitable for the stable feeding process of pellets. Utility Model Content

[0004] This application aims to at least partially solve the technical problem of the lack of stable feeding devices for pellets. To this end, this application provides a feeding and mixing device that can ensure that the amount of material added does not fluctuate significantly during the adjustment process, and that the discharge is flat and stable, thereby improving the stability of pellet binder addition.

[0005] This application provides a feeding and dispensing device, which includes:

[0006] A conveying mechanism used to transport materials from an inlet to an outlet that is spaced apart from the inlet;

[0007] The feed pipe and the first valve located on the feed pipe are connected to the inlet of the conveying mechanism;

[0008] The discharge pipe is used to discharge materials and is connected to the outlet of the conveying mechanism.

[0009] In some implementations, the conveyor mechanism has a transverse transport channel inside, allowing the feed to move horizontally from the inlet to the outlet.

[0010] In some implementations, a second valve is also included, located in the discharge pipe.

[0011] In some embodiments, the discharge pipe includes a receiving trough and a guiding trough. The two ends of the receiving trough are connected to the outlet of the conveying mechanism and the guiding trough. The guiding trough is used to discharge the material and is equipped with a second valve.

[0012] In some implementations, the receiving trough is in the vertical direction of entry and exit, and the diameter of the receiving trough gradually increases from top to bottom.

[0013] In some embodiments, a feed hopper is also included for adding material to the conveying mechanism, and the feed hopper is connected to the feed pipe.

[0014] In some embodiments, a weighing and conveying mechanism is also included, located below the discharge pipe. The weighing and conveying mechanism is used to weigh and convey the material, and is communicatively connected to the conveying mechanism.

[0015] In some implementations, the conveying mechanism is a screw feeder, which is horizontally positioned.

[0016] In some implementations, the first valve is a gate valve.

[0017] In some implementations, the second valve is a slide gate valve.

[0018] As can be seen from the above technical solution, the beneficial effects of this application are as follows:

[0019] This application employs a conveying mechanism that can transport materials at a certain distance between the inlet and outlet. Due to the increased material displacement, a certain buffer distance is formed during the material feeding process, ensuring that the material transported per unit time and distance remains stable. By controlling the material of the conveying mechanism through the first valve in the feed pipe, the amount of material entering the conveying mechanism can be better regulated. This allows for better regulation of the material discharged from the outlet pipe, ensuring that the material quantity does not fluctuate significantly during the regulation process, resulting in a smooth and stable discharge and achieving the goal of improving the stability of pellet binder formulation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced one by one below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other embodiments and drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A front view of an embodiment of the feeding and dispensing device of this utility model is shown;

[0022] Figure 2 A side view of an embodiment of the feeding and dispensing device of this utility model is shown;

[0023] Reference numerals: 10, feed hopper; 20, feed pipe; 30, first valve; 40, conveying mechanism; 41, inlet; 42, outlet; 50, discharge pipe; 51, receiving trough; 52, guide trough; 60, second valve; 70, weighing and transmission mechanism. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] This application is described below with reference to the accompanying drawings and specific embodiments:

[0029] Please refer to Figure 1The first aspect of this application provides a feeding and dispensing device for adding a binder to pellets. The material is the binder, but it can also be used for adding other additives. The device includes a conveying mechanism 40, a feed pipe 20, and a discharge pipe 50. The feed pipe 20 is equipped with a first valve 30. The conveying mechanism 40 has an inlet 41 and an outlet 42. The conveying mechanism 40 is used to convey the material from the inlet 41 to the outlet 42, which is spaced apart from the inlet 41. There is a distance between the inlet 41 and the outlet 42. During the transmission over this distance, the material addition rate is constant. This is because when the conveying mechanism 40 conveys the material from the inlet 41 to the outlet 42, its transport channel or transport rate is fixed. If the material is added directly, the material addition will be unstable due to factors such as manual operation and the interaction forces between materials. After passing through the conveying mechanism 40, the material is discharged from the outlet 42. The feed pipe 20 is a pipe fitting, with one end connected to the source of the material and the other end connected to the inlet 41 of the conveying mechanism 40. The first valve 30 is located on the feed pipe 20. The first valve 30 can be any existing valve. The first valve 30 is used to regulate the flow of the feed pipe 20. The feed pipe 20 is connected to the inlet 41 of the conveying mechanism 40, so the first valve 30 can regulate the amount or speed of material conveyed in the conveying mechanism 40. The discharge pipe 50 is used to discharge the material. The discharge pipe 50 is also a pipe fitting. One end of the discharge pipe 50 is connected to the outlet 42 of the conveying mechanism 40, and the other end discharges the material. The connection between the above pipes and the conveying mechanism 40 adopts conventional connection methods, such as flange connection, bolt connection, etc.

[0030] In the existing technology for adding binders to ore pellets, the strong hydrophilicity, natural binding force, and low density of the binders often lead to silo bulging issues when using existing bentonite silo facilities for quicklime addition. Furthermore, material spraying is prone to occur during processing, making precise and stable quicklime addition difficult and increasing the labor intensity of site cleanup. This application utilizes a conveying mechanism 40, which can transport materials at a certain distance between the inlet 41 and outlet 42. This added material displacement creates a buffer distance during material addition, maintaining a stable material delivery rate per unit time and distance. The first valve 30 controls the material flow through the feed pipe 20 and the conveying mechanism 40, allowing for better regulation of the amount of material entering the conveying mechanism 40. This ensures better regulation of the material discharged from the outlet pipe 50, preventing significant fluctuations in material quantity and resulting in a smooth and stable discharge, thus improving the stability of the ore pellet binder addition.

[0031] Please refer to Figure 2In some embodiments, the conveying mechanism 40 has a transverse transport channel inside, allowing the feed material to move horizontally from the inlet 41 to the outlet 42. The transport channel is horizontally positioned, with its two ends connected to the inlet 41 and the outlet 42, respectively. The inlet 41 of the conveying mechanism 40 is located at the top of one end of the conveying mechanism 40, and the outlet 42 is located at the bottom of the other end of the conveying mechanism 40. In some embodiments, the conveying mechanism 40 is a screw feeder made of Q235 stainless steel, with the auger blades made of stainless steel. The connection between the screw feeder and the feed pipe 20 and the discharge pipe 50 is sealed using a flange and packing. The screw feeder is horizontally positioned and uses frequency conversion control to adjust its rotation speed, thus better regulating the feeding rate and amount of material. The screw feeder ensures natural material flow and buffers and stabilizes the material flow.

[0032] In some embodiments, the discharge pipe 50 includes a receiving trough 51 and a guiding trough 52. Both the receiving trough 51 and the guiding trough 52 are pipe fittings, which can be round or square pipes, made of ordinary steel. The two ends of the receiving trough 51 are connected to the outlet 42 of the conveying mechanism 40 and the guiding trough 52. For example, the top end of the receiving trough 51 is connected to the outlet 42 and the bottom end is connected to the guiding trough 52. The guiding trough 52 is used to discharge materials. The guiding trough 52 is provided with a second valve 60. For example, an installation port is opened in the pipe fitting of the guiding trough 52 and the second valve 60 is embedded and installed. The second valve 60 can be a mechanical valve, such as a slide gate valve or a gate valve, or an electric valve. The discharge rate of the material discharged from the guiding trough 52 is adjusted by the second valve 60 to further buffer the discharge rate and ensure stable discharge. In some embodiments, the receiving trough 51 is in the vertical direction, and the diameter of the receiving trough 51 gradually increases from top to bottom. In this way, the material discharged from the outlet 42 of the conveying mechanism 40 can pass smoothly through the receiving trough 51 and be discharged into the guide trough 52, and finally be discharged through the guide trough 52. The guide trough 52 is also set in the vertical direction, so that the material can pass smoothly.

[0033] In some embodiments, the device further includes a feed hopper 10 for adding materials to the conveying mechanism 40. The feed hopper 10 is connected to the feed pipe 20 and is a funnel-shaped container with a larger opening at the top and a smaller opening at the bottom. The upper end is used as the source for receiving materials, and the lower end is used to guide the materials into the conveying mechanism 40. The feed hopper 10 is located below the adhesive hopper and can be a short section of the adhesive hopper. In some embodiments, the lower end of the feed hopper 10 can be connected to a first valve 30 via a flange. The first valve 30 is a gate valve and is controlled by a driver. For example, the operating end of the first valve 30 can be connected to a linear motor. The first valve 30 can also be an electric valve. The amount of material fed by the screw feeder can be adjusted through the first valve 30. When the hopper level is low and materials need to be added for filling, the first valve 30 is closed to prevent airflow impact from causing material spraying. In some embodiments, the device further includes a second valve 60 located in the discharge pipe 50. The second valve 60 can be a manual valve or an electric valve, and can be used to adjust the material flow rate and volume in the discharge pipe 50. In some embodiments, the second valve 60 is a slide gate valve, a conventional valve device, which adjusts the amount of material in the discharge pipe 50 by pulling it out. Thus, by adjusting the first valve 30 and the second valve 60, the material can be regulated to a stable state, ensuring the material's flatness and stability.

[0034] In some embodiments, the device further includes a weighing and conveying mechanism 70, located below the discharge pipe 50. Specifically, a sealed leather guardrail is installed between the guide chute 52 and the weighing and conveying mechanism 70 to prevent material spillage during transportation. The weighing and conveying mechanism 70 is used to weigh and convey the material. The weighing and conveying mechanism 70 is communicatively connected to the conveying mechanism 40. The weighing and conveying mechanism 70 has a conveyor belt that operates at a constant speed and can perform real-time weighing. For example, the weighing and conveying mechanism 70 may use an electronic belt scale, which can weigh materials over a certain conveying distance. Weighing is performed under the following conditions; the weighing sensing unit of the weighing transmission mechanism 70, such as a pressure sensor, is communicatively connected to the controller of the screw feeder. In this way, the weighing data is fed back through the weighing transmission mechanism 70 to adjust the speed of the screw feeder, thus avoiding the material being added too quickly or too slowly, maintaining the material quantity within a suitable range, ensuring the flatness of the material surface on the weighing transmission mechanism 70, and eliminating the spraying phenomenon caused by material flow fluctuations during the addition process. This improves the stability of the pellet binder addition, meets the requirements for stable binder addition, and also reduces production costs.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," "optional example," or "optional implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0036] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0037] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A feed dosing device, characterized in that The application relates to a material conveying device, comprising: a conveying mechanism (40) for conveying material from an inlet (41) to an outlet (42) spaced from the inlet (41); a feeding pipe (20) and a first valve (30) arranged in the feeding pipe (20), the feeding pipe (20) being communicated with the inlet (41) of the conveying mechanism (40); a discharging pipe (50) for discharging material, the discharging pipe (50) being communicated with the outlet (42) of the conveying mechanism (40).

2. The feed addition apparatus of claim 1, wherein The conveying mechanism (40) is internally provided with a horizontal conveying channel, so that the material can be horizontally moved from the inlet (41) to the outlet (42).

3. The feed addition apparatus of claim 1, wherein The application further comprises a second valve (60) arranged in the discharging pipe (50).

4. The feed addition apparatus of claim 3, wherein The discharging pipe (50) comprises a receiving groove (51) and a guide groove (52), two ends of the receiving groove (51) being connected with the outlet (42) of the conveying mechanism (40) and the guide groove (52), the guide groove (52) being used for discharging material, and the guide groove (52) being provided with the second valve (60).

5. A feed addition device according to claim 4, characterized in that The feeding and discharging directions of the receiving groove (51) are vertical, and the diameters of the receiving groove (51) gradually increase from top to bottom.

6. A feed addition device according to any one of claims 1-5, characterized in that The application further comprises a feeding bin (10) for feeding material into the conveying mechanism (40), the feeding bin (10) being communicated with the feeding pipe (20).

7. A feed addition device according to any one of claims 1-5, characterized in that The application further comprises a weighing and conveying mechanism (70) arranged below the discharging pipe (50), the weighing and conveying mechanism (70) being used for weighing and conveying material, and the weighing and conveying mechanism (70) being communicatively connected with the conveying mechanism (40).

8. The feed addition apparatus of claim 1, wherein The conveying mechanism (40) is a screw feeder, and the screw feeder is horizontally arranged.

9. The feed addition apparatus of claim 1, wherein The first valve (30) is a gate valve.

10. The feed addition apparatus of claim 3, wherein The second valve (60) is a plug valve.

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