Adjustable feeding device and adjustment method thereof

Abstract

The present invention provides an adjustable feeding device and an adjustment method thereof, wherein the feeding device comprises a feeder, a control system for controlling the feeding, and the adjustable feeding device further comprises an intermediate bin arranged below the feeder and a weighing device arranged between the intermediate bin and the feeder. The present invention has a simple structure, is easy to install, and is easy to use and operate. The feeding process can be accurately controlled according to pre-set requirements, and the type and number of feeding can be flexibly converted.

Description

Technical Field

[0001] The invention belongs to the technical field of feeding equipment, and in particular relates to an adjustable feeding device and an adjustment method thereof. Background Art

[0002] For example, in current vacuum induction furnace metallurgical production, materials are usually added to the furnace during the smelting process to adjust the composition of the alloy liquid, or to perform tempering and purification treatments to improve its performance and achieve the required performance indicators.

[0003] At present, there are two main ways to add materials into a vacuum induction furnace. One is to add materials into the furnace in layers, and add the materials to be melted later on top. This method is simple, but after the materials in the lower part of the furnace body are melted, the materials on top immediately enter the melt, and it is difficult to control the time when the materials enter the melt; the other method is to set a silo on the furnace cover and divide the silo into several small silos, and divide the materials to be added later into several small portions and place them in each small silo. During the smelting process, according to production requirements, the placement mechanism of the silo is manually rotated to add the materials from each small silo into the furnace. Although this method can add materials to the furnace in batches, the number of small silos is limited, that is, the batches are limited, which will limit the weight and number of times the materials are added. In addition, the degree of automation is low, and it is difficult to accurately control.

[0004] In view of the defects in the prior art, a new feeding device needs to be designed. Summary of the invention

[0005] The object of the present invention is to provide an adjustable feeding device and an adjustment method thereof which are simple to operate, convenient to use, accurate in feeding and can feed multiple times.

[0006] In order to achieve the above objectives, the present invention provides an adjustable feeding device, including a feeder and a control system for controlling the feeding. The adjustable feeding device also includes an intermediate bin arranged below the feeder and a weighing device arranged between the intermediate bin and the feeder.

[0007] As a further improvement of the present invention, the feeder includes a silo and a feeding device arranged below the silo.

[0008] As a further improvement of the present invention, the feeding device includes a guide channel inclined downward and a feed outlet arranged at the end of the guide channel.

[0009] As a further improvement of the present invention, the intermediate bin includes a hollow material cavity, a transfer bin arranged below the material cavity, and a material conduit extending downward from below the transfer bin.

[0010] As a further improvement of the present invention, an upper valve is arranged at the top of the material chamber, and a lower valve is arranged at the bottom.

[0011] As a further improvement of the present invention, a protective gas valve, an exhaust valve, a gas concentration detection probe and a gas pressure detection probe are arranged on the side wall of the material chamber.

[0012] As a further improvement of the present invention, the weighing device includes a weighing sensor, a rotating machine arranged on the weighing sensor, and a driving shaft extending laterally from the rotating machine.

[0013] As a further improvement of the present invention, the weighing device also includes a measuring cup installed at the end of the driving shaft.

[0014] As a further improvement of the present invention, the metering cup is aligned with the material discharge port and is located above the material cavity.

[0015] The present invention also provides a method for adjusting an adjustable feeding device, comprising the following steps:

[0016] Step 1: Start the control system, which gives a signal to close the upper valve, lower valve, protective gas valve, and exhaust valve;

[0017] Step 2: Start the feeder, vibrate and feed, and add the material in the silo into the measuring cup;

[0018] Step 3: The weighing device weighs the material in the measuring cup by induction. When the preset parameters are reached, the control system sends a signal to stop the vibration feeding;

[0019] Step 4: Open the upper valve and start the rotary machine. The measuring cup will flip under the action of the driving shaft to add the material in it into the material chamber;

[0020] Step 5: Rotate the measuring cup, close the upper valve, open the exhaust valve, and evacuate the material chamber to a vacuum state;

[0021] Step 6: Close the exhaust valve, open the lower valve, and allow the material in the material chamber to enter the furnace body through the material conduit, and then close the lower valve.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The invention has the advantages of simple structure, convenient installation, convenient use and operation, accurate control according to preset requirements during the feeding process, and flexible conversion in the type and frequency of feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of the adjustable feeding device of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the intermediate warehouse in the present invention;

[0027] Figure 3 It is a structural schematic diagram of the weighing device in the present invention. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below in conjunction with the various embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0029] This embodiment provides an adjustable feeding device 100, comprising a feeder 1, a control system 2 for controlling feeding, and the adjustable feeding device further comprises an intermediate bin 3 disposed below the feeder 1 and a weighing device 4 disposed between the intermediate bin 3 and the feeder 1. The feeder 1 comprises a bin 11 and a feeding device 12 disposed below the bin 11.

[0030] The feeding device 12 includes a guide channel 13 that is inclined downward, and a material discharge port 14 that is arranged at the end of the guide channel 13. In this embodiment, in order to facilitate the forward conveying of materials, the guide channel is arranged in a sloped manner, and a vibration device is installed below the sloped guide surface, which can effectively ensure the conveying of materials. The intermediate warehouse 3 includes a hollow material chamber 31, a transfer warehouse 32 arranged below the material chamber 31, and a material conduit 33 extending downward from the bottom of the transfer warehouse 32. The top of the material chamber 31 is provided with an upper valve 34, and the bottom is provided with a lower valve 35. The side wall of the material chamber 31 is provided with a protective gas valve 36, an exhaust valve 37, a gas concentration detection probe 38, and a gas pressure detection probe 39. In this embodiment, various valves and detection probes are installed on the material chamber. The number of gas valves can be changed and designed according to actual needs, and the detection probes of gas parameters can also be increased according to actual needs to ensure that the material is in the required process state in the material chamber.

[0031] The weighing device 4 includes a weighing sensor 41, a rotating machine 42 arranged on the weighing sensor 41, and a driving shaft 43 extending laterally from the rotating machine 42. The weighing device 4 also includes a measuring cup 44 installed at the end of the driving shaft 43, and the measuring cup 44 is aligned with the discharge port 14 and is located above the material cavity 31. In this embodiment, the material is poured into the material cavity by driving the measuring cup to rotate the driving shaft. In the specific use process, the material in the measuring cup can also be added to the material cavity in other ways, such as the bottom plate of the measuring cup can be set to be able to be pulled or moved horizontally separately. During operation, the measuring cup does not need to be moved, and only the bottom plate needs to be removed or removed. After adding, the bottom plate is restored to its original position. The main function of the weighing device in this embodiment is that after the material comes out of the discharge port, it does not directly enter the material cavity, but first falls into the weighing device. In this embodiment, a combination of a measuring cup and a weighing sensor is used, and the material in the measuring cup can be weighed and calculated in real time. When the weight of the material reaches the parameters set by the specific process, the control module controls the feeding device to stop feeding. In this way, the weight ratio of the added materials can be accurately controlled, and it is also convenient to change other materials. You only need to add new materials again. It is highly operational and convenient.

[0032] Specifically, a method for adjusting an adjustable feeding device in this embodiment includes the following steps:

[0033] Step 1: Start the control system, which gives a signal to close the upper valve, lower valve, protective gas valve, and exhaust valve;

[0034] Step 2: Start the feeder, vibrate and feed, and add the material in the silo into the measuring cup;

[0035] Step 3: The weighing device weighs the material in the measuring cup by induction. When the preset parameters are reached, the control system sends a signal to stop the vibration feeding;

[0036] Step 4: Open the upper valve and start the rotary machine. The measuring cup will flip under the action of the driving shaft to add the material in it into the material chamber;

[0037] Step 5: Rotate the measuring cup, close the upper valve, open the exhaust valve, and evacuate the material chamber to a vacuum state;

[0038] Step 6: Close the exhaust valve, open the lower valve, and allow the material in the material chamber to enter the furnace body through the material conduit, and then close the lower valve.

[0039] In the above steps, especially step 5, during the vacuuming process, protective gas can also be introduced according to the actual process requirements. On the one hand, the protective gas is an inert gas and will not react with the material. On the other hand, it can ensure that the pressure in the material chamber is within the range required by the process.

[0040] The adjustment method of the present invention can be applied to different devices, for example:

[0041] The specific operating steps on the vacuum induction furnace are as follows:

[0042] Install the material conduit of the intermediate bin on the furnace cover and above the furnace body of the vacuum induction furnace, connect the exhaust valve of the intermediate bin to the vacuum pumping system, and set the process parameters.

[0043] Step 1: Start the control system to give a signal to close the lower valve, protective gas valve and exhaust valve;

[0044] Step 2: Start the feeder and add the material in the silo into the measuring cup;

[0045] Step 3: When the material in the measuring cup reaches the set process requirements, stop vibrating the feeding;

[0046] Step 4, open the upper valve, start the rotary machine, drive the measuring cup to rotate, and let the material in the measuring cup enter the material chamber through the upper valve;

[0047] Step 5: Rotate the measuring cup and close the upper valve;

[0048] Step 6: Open the exhaust valve and vacuum the material chamber with the vacuum system;

[0049] Step 7: When the vacuum degree in the material cavity reaches the process requirement, close the exhaust valve, open the lower valve, and the material in the material cavity enters the furnace body of the vacuum induction furnace through the material conduit;

[0050] Step 8: Close the lower valve;

[0051] Then, according to the specific process requirements, add other types of materials and repeat steps 2-8. After all the materials are added, the feeding is ended.

[0052] In another application scenario, the specific operating steps on the electroslag furnace are as follows: install the material conduit of the intermediate bin on the gas protection cover of the gas protection electroslag furnace, connect the protection gas valve to the protection gas source, and set the process parameters.

[0053] Step 1: Start the control system to give a signal to close the lower valve, protective gas valve and exhaust valve;

[0054] Step 2: Start the vibrating feeder and add the material in the silo into the measuring cup;

[0055] Step 3: When the material in the measuring cup reaches the set process requirements, stop vibrating the feeding;

[0056] Step 4, open the upper valve, start the rotary machine, drive the measuring cup to rotate, and let the material in the measuring cup enter the material chamber through the upper valve;

[0057] Step 5: Rotate the measuring cup and close the upper valve;

[0058] Step 6: Open the exhaust valve and the protective gas valve to fill the material cavity with protective gas;

[0059] Step 7: When the content of the protective gas in the material chamber reaches the process requirement, close the exhaust valve, open the lower valve, and the material in the material chamber enters the gas-protected electroslag furnace through the material conduit;

[0060] Step 8, close the lower valve and the protective gas valve;

[0061] Then, according to the specific process requirements, add other types of materials and repeat steps 2-8. After all the materials are added, the feeding is ended.

[0062] In the third application scenario, the specific operation steps on the molten electrolytic cell are as follows:

[0063] Install the material conduit of the intermediate bin on one side of the molten electrolytic cell and connect it to the sedimentation tank with a pipeline. Connect the protective gas valve to the compressed gas source and set the process parameters.

[0064] Step 1: Start the control system to give a signal and close the lower valve and exhaust valve;

[0065] Step 2: Start the vibrating feeder and add the material in the silo into the measuring cup;

[0066] Step 3: When the material in the measuring cup reaches the set process requirements, stop vibrating the feeding;

[0067] Step 4, open the upper valve, start the rotary machine, drive the measuring cup to rotate, and let the material in the measuring cup enter the material chamber through the upper valve;

[0068] Step 5: Rotate the measuring cup and close the upper valve;

[0069] Step 6: Close the exhaust valve, open the protective gas valve, and fill the material chamber with compressed gas;

[0070] Step 7: When the gas pressure in the material chamber reaches the process requirement, the lower valve is opened, and the material in the material chamber passes through the material conduit and enters the molten electrolytic cell under the action of the compressed gas;

[0071] Step 8, close the protective gas valve and the lower valve;

[0072] Then, according to the specific process requirements, add other types of materials and repeat steps 2-8. After all the materials are added, the feeding is ended.

[0073] The furnace bodies applicable to the present invention include but are not limited to vacuum induction furnaces, electric slag furnaces, molten electrolytic cells, etc. Since each furnace body corresponds to a different processing technology, the feeding speed, proportion, type, number of times, etc. in the reaction process are different. The adjustable feeding device provided by the present invention can meet the needs of different furnace bodies and has a wide range of applicability. There is no need to purchase special feeding devices for different reaction furnace bodies. Both the feeding speed and proportion can be precisely controlled, and the type and number of times of adding materials are not limited. The operation is simple, convenient and reliable.

[0074] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0075] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A method for adjusting an adjustable feeding device, characterized in that: The adjustable feeding device comprises a feeder and a control system for controlling the feeding; the adjustable feeding device also comprises an intermediate bin arranged below the feeder and a weighing device arranged between the intermediate bin and the feeder; The intermediate bin includes a hollow material cavity, a transfer bin arranged below the material cavity, and a material conduit extending downward from below the transfer bin; an upper valve is arranged at the top of the material cavity, and a lower valve is arranged at the bottom; a protective gas valve, an exhaust valve, a gas concentration detection probe, and a gas pressure detection probe are arranged on the side wall of the material cavity; The weighing device includes a weighing sensor, a rotating machine arranged on the weighing sensor, and a driving shaft extending laterally from the rotating machine; the weighing device also includes a measuring cup installed at the end of the driving shaft; the measuring cup is aligned with the discharge port and is located above the material cavity; The feeder comprises a silo and a feeding device arranged below the silo; the feeding device comprises a guide channel inclined downward and a discharge port arranged at the end of the guide channel; The adjustment method comprises the following steps: Step 1: Start the control system. The control system gives a signal to close the upper valve, lower valve, protective gas valve, and exhaust valve. Step 2: Start the feeder, vibrate and feed, and add the material in the silo into the measuring cup. Step 3: The weighing device weighs the material in the measuring cup by induction. When the preset parameters are reached, the control system sends a signal to stop the vibration feeding. Step 4: Open the upper valve and start the rotary machine. The measuring cup will flip under the action of the driving shaft and add the material in it into the material chamber. Step 5: Rotate the measuring cup, close the upper valve, open the exhaust valve, and evacuate the material chamber to a vacuum state. Step 6: Close the exhaust valve, open the lower valve, and allow the material in the material chamber to enter the furnace body through the material conduit, and then close the lower valve.

Images