Automatic soot blowing furnace

Abstract

The automatic soot blowing furnace comprises a furnace body, a conveying device is arranged outside the furnace body, the conveying device is used for conveying a cupel into the furnace body, and a furnace door capable of being automatically opened and closed is arranged on the furnace body; and an endoscopic camera is arranged in the furnace body and is used for monitoring a soot blowing end point. The device can control the cupel to automatically enter and exit from the hearth, frequent door opening and closing are not needed, the temperature in the furnace is stable, energy consumption loss is reduced, harmful gas emission is reduced, and cost reduction and efficiency improvement are facilitated; image data are acquired by adopting a light supplementing lamp and an endoscopic camera, so that the method is more reliable and accurate; and the cupel subjected to soot blowing is taken out in time through the material taking module, the loss of metal silver is reduced, and the extraction content is increased. Due to feeding and discharging of the cupel, automatic operation is achieved, the working efficiency is improved by 50%, and the cupel can be in butt joint with full-automatic equipment.

Description

Technical Field

[0001] This application belongs to the field of metallurgy, and particularly relates to an automated cupellation furnace. Background Art

[0002] The fire assay cupellation furnace is an experimental device commonly used for metal detection, especially for determining the content of gold, silver, and precious metals. Cupellation is carried out by putting the "lead button" into a cupel that has been preheated in a high-temperature furnace at 900 °C for 20 minutes, closing the furnace door, maintaining the temperature at 900 °C, and when the "lead button" is completely melted, controlling the cupellation at about 860 °C. The cupellation is completed in about 1 hour. The sign of the end of cupellation is that the alloy button shows the "flashing" phenomenon twice.

[0003] Most of the existing cupellation furnaces are completed by manual operation. That is, after manually putting the lead button into the cupellation furnace, during the heating process, it is necessary to repeatedly open the furnace door for visual observation to determine whether the cupellation has reached the end point. This way of repeatedly opening the furnace door not only causes heat loss and reduces the efficiency of the cupellation experiment, but also has a greater risk of manual operation, being prone to scalding or poisoning by harmful gases. The reliability of the manual observation method is poor, and it is easy to miss the end point of cupellation, affecting the test results.

[0004] Therefore, an automated cupellation furnace testing device is needed to solve the above problems. Summary of the Invention

[0005] To solve the deficiencies of the existing technology described above, this application provides an automated cupellation furnace that can automatically place the cupel in the furnace body for cupellation end point testing without manual monitoring.

[0006] The technical effects to be achieved by this application are realized through the following solutions: According to the first aspect of this application, an automated cupellation furnace is provided, including a furnace body. A conveying device is arranged outside the furnace body, and the conveying device is used to convey the cupel into the furnace body. The furnace body is provided with an automatically opening and closing furnace door; an endoscope camera is arranged in the furnace body, and the endoscope camera is used to monitor the cupellation end point.

[0007] Preferably, the conveying device includes a cupel tray and a feeding and discharging module. A number of cupel positions are arranged on the cupel tray for holding cupels; the feeding and discharging module includes a shovel plate and a pushing cylinder, and the pushing cylinder drives the shovel plate to place the cupel in the furnace body.

[0008] Preferably, the conveying device further includes a lifting mechanism, and the lifting mechanism is used to lift the cupel tray; a number of shovel grooves are arranged on the shovel plate, and the shovel grooves are used to insert into both sides of the cupel to move the cupel.

[0009] Preferably, a lifting mechanism is provided in the furnace body, and the lifting mechanism is used to take out the ash pan from the shovel groove.

[0010] Preferably, the lifting mechanism includes a support rod and a lifting cylinder. The lifting cylinder drives the support rod to move up and down, and the support rod is used to lift the ash pan.

[0011] Preferably, the furnace body includes a furnace chamber and a control chamber separated by a heat insulation wall. The lifting cylinder is located in the control chamber, and the support rod passes through the heat insulation wall and extends into the furnace chamber.

[0012] Preferably, the endoscope camera is located at the top of the furnace body and extends into the furnace chamber, and a fill light is provided on one side of the furnace body and extends into the furnace chamber.

[0013] Preferably, a side conveyor belt is provided on the conveying device. The side conveyor belt is arranged perpendicular to the moving direction of the shovel plate and laterally extends out of the conveying device. The side conveyor belt is used to input the ash pan into the conveying device, and the lifting mechanism is arranged in the side conveyor belt.

[0014] Preferably, the side conveyor belt includes a conveying chain plate, a positioning mechanism and a centering mechanism. The positioning mechanism is a blocking cylinder for blocking the ash pan; the centering mechanism is a clamping cylinder located on both sides of the conveying chain plate to push the ash pan to the middle of the conveying chain plate.

[0015] Preferably, a material taking module is further provided on the conveying device. The material taking module includes an X-axis module, a Y-axis module, a Z-axis module and a gripper module. The material taking module is used to pick up the ash pan from the furnace body and place it on the ash pan.

[0016] According to an embodiment of the present application, the beneficial effects of adopting the present automatic cupellation furnace are as follows: Automatically control the ash pan to enter and exit the furnace chamber, without frequently opening and closing the door, the temperature in the furnace is stable, reducing energy consumption loss and harmful gas emissions, which helps to achieve cost reduction and efficiency increase; Adopt the method of fill light and endoscope camera to collect image data, which is more reliable and accurate; and the ash pan after cupellation is taken out in time through the material taking module, reducing the loss of metallic silver and increasing the extraction content.

[0017] Due to the automatic operation of the ash pan for feeding and discharging, the working efficiency is increased by 50%, and it can also be docked with fully automatic equipment. Description of the Drawings

[0018] To more clearly illustrate the embodiments of the present application or the existing technical solutions, the following will briefly introduce the drawings required for the description of the embodiments or the existing technology. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of an automated cupellation furnace in an embodiment of the present application; Figure 2 For Figure 1 Top view structural schematic diagram of the automated cupellation furnace in; Figure 3 For Figure 1 Rear view structural schematic diagram of the furnace body in; Figure 4 For Figure 3 Cross-sectional structural schematic diagram in the A-A direction in; Figure 5 For Figure 1 Structural schematic diagram of the conveying mechanism in; Figure 6 For Figure 5 Structural schematic diagram of the side conveyor belt in. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the present application clearer, the following will clearly and completely describe the technical solutions of the present application in conjunction with specific embodiments and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0021] As Figures 1 to 6 shown, the automated cupellation furnace in an embodiment of the present application includes a furnace body 100. A conveying device is arranged outside the furnace body 100, and the conveying device is used to convey the cupel to the furnace body 100. An automatically opening and closing furnace door 131 is arranged on the furnace body 100; An endoscope camera 110 is arranged in the furnace body 100, and the endoscope camera 110 is used to monitor the end point of cupellation.

[0022] Through the solution of this embodiment, the cupel is placed on the conveying device, the furnace door 131 is automatically opened. After the conveying device places the cupel in the furnace body 100, the furnace door 131 is closed and heating starts. During the heating process, the endoscope camera 110 takes real-time images of the inside of the furnace body 100, and transmits the images to an external computer. The end point of cupellation is identified manually or automatically, that is, when it is determined that the "flashing" phenomenon appears twice, the corresponding cupel number is recorded.

[0023] The use of this device eliminates the need for manual door opening for observation, which not only avoids heat loss and improves test accuracy, but also avoids harm to operators.

[0024] The automatically opened and closed furnace door 131 is controlled by an opening and closing cylinder 132. The furnace door 131 is slidably connected to the furnace body 100. The piston rod of the opening and closing cylinder 132 is connected to the side of the furnace door 131. The bottom of the opening and closing cylinder 132 is connected to the furnace body 100. The extension and retraction of the opening and closing cylinder 132 can drive the furnace door 131 to open and close.

[0025] In one embodiment of the present application, the conveying device includes an ash dish tray 210 and an inlet and outlet module 200. The ash dish tray 210 is provided with a plurality of ash dish positions 211 for holding ash dishes. The inlet and outlet module 200 includes a shovel plate 220 and a material pushing cylinder. The material pushing cylinder drives the shovel plate 220 to place the ash dishes in the furnace body 100. The ash dish tray 210 is made of metal material. The ash dish positions 211 on its surface are through holes or blind holes. The ash dishes can be placed on the ash dish positions 211 for temporary fixation, so that the upper half of the ash dishes are exposed, which is convenient for taking and placing.

[0026] The pushing cylinder can be directly driven by a servo electric cylinder, or driven by a servo motor plus a screw. The thread of the screw is used to drive the shovel plate 220 to move back and forth, which can drive the shovel plate 220 to move back and forth a certain distance. The shovel plate 220 is slidably connected to the frame of the conveying device to ensure its smooth movement.

[0027] In one embodiment of the present application, the conveying device further includes a lifting mechanism 320, which is used to lift and lower the ash dish tray 210; a plurality of shovel grooves are provided on the shovel plate 220, and the shovel grooves correspond to the columns of the ash dish positions 211 one by one, and the shovel grooves are used to be inserted into the two sides of the ash dish to move the ash dish. When in use, the lifting mechanism 320 lifts the ash dish tray 210 so that the shovel plate 220 faces the upper surface of the ash dish tray 210. After the shovel plate 220 moves to allow the ash dish to enter the shovel groove, since the ash dish is a structure that is wide at the top and narrow at the bottom, after the ash dish enters the shovel groove, its upper half can be stuck in the shovel groove. At this time, the lifting mechanism 320 is controlled to descend, and the ash dish can stay on the shovel plate 220. The ash dish can be placed in the furnace body 100 by moving the shovel plate 220.

[0028] In one embodiment of the present application, in order to remove the ash tray from the shovel plate 220, a lifting mechanism is provided in the furnace body 100, and the lifting mechanism is used to remove the ash tray from the shovel groove, that is, the lifting mechanism rises to lift the ash tray to separate it from the contact with the two side walls of the shovel groove, the shovel plate 220 is withdrawn out of the furnace body 100, and the lifting mechanism descends to complete the placement of the ash tray.

[0029] In an embodiment of the present application, the lifting mechanism includes a support rod 141 and a lifting cylinder 142. The lifting cylinder 142 drives the support rod 141 to move up and down, and the support rod 141 is used to lift the ash pan. A base is provided at the top of the support rod 141, and the diameter of the base is the same as the bottom diameter of the ash pan, which can ensure that the ash pan is stably placed on the base. The maximum diameter of the support rod 141 is smaller than the width of the shovel groove. The lifting cylinder 142 is, for example, a pneumatic cylinder or a hydraulic cylinder, which drives the overall movement of the matrix composed of the support rods 141, or each support rod 141 corresponds to a lifting cylinder 142 to control the movement separately.

[0030] In an embodiment of the present application, the furnace body 100 includes a furnace cavity 101 and a control cavity 102 separated by a heat insulation wall 103. The lifting cylinder 142 is located in the control cavity 102, and the support rod 141 penetrates through the heat insulation wall 103 to extend into the furnace cavity 101. The heat insulation wall 103 is used for temperature insulation to prevent the high temperature in the furnace cavity 101 from damaging the lifting cylinder 142 and improve the service life of the device.

[0031] In an embodiment of the present application, the endoscope camera 110 is located at the top of the furnace body 100 and extends into the furnace cavity 101. A supplementary light 120 is provided on one side of the furnace body 100 and extends into the furnace cavity 101. The outer periphery of the endoscope camera 110 is wrapped with heat insulation material, and its end faces the furnace cavity 101 through a heat insulation glass to avoid being scalded by high temperature. The supplementary light 120 is also wrapped with heat insulation material and heat-resistant heat insulation glass, which is used to provide illumination into the furnace cavity 101 to ensure clear shooting.

[0032] In an embodiment of the present application, a side conveyor belt 300 is provided on the conveying device. The side conveyor belt 300 is arranged perpendicular to the moving direction of the shovel plate 220 and extends laterally out of the conveying device. The side conveyor belt 300 is used to input the ash pan 210 into the conveying device, and the lifting mechanism is arranged in the side conveyor belt 300. The outer end of the side conveyor belt 300 can be far away from the furnace body 100 to avoid scalding the staff by the overflowing hot air, and the lateral extension facilitates the operator to place the ash pan on the ash pan 210.

[0033] In an embodiment of the present application, the side conveyor belt 300 includes a conveying chain plate 310, a positioning mechanism 330 and a centering mechanism 340. The positioning mechanism 330 is a blocking air cylinder for blocking the ash pan 210; the centering mechanism 340 is a clamping air cylinder located on both sides of the conveying chain plate 310 to push the ash pan 210 to the middle of the conveying chain plate 310. The conveying chain plate 310 can be conveyed forward or backward under the action of a motor. The blocking air cylinder is fixed to the frame of the conveying chain plate 310 and can block the ash pan 210 after extending to ensure the accuracy of its stopping position.

[0034] The clamping cylinder of the centering mechanism 340 is horizontally placed at the bottom of the conveying chain plate 310. There are clamping plates on both sides of the conveying chain plate 310. The clamping cylinder drives the clamping plates to clamp both sides of the conveying chain plate 310, so as to move the ash dish tray 210 protruding to one side to the middle of the conveying chain plate 310 and achieve the centering operation.

[0035] In an embodiment of the present application, the conveying device further includes a material taking module 230. The material taking module 230 includes an X-axis module, a Y-axis module, a Z-axis module, and a gripper module 231. The material taking module 230 is used to pick up the ash dish from the furnace body 100 and place it on the ash dish tray 210. When it is recognized that a certain ash dish reaches the ash blowing end point, the material taking module 230 picks up the corresponding ash dish and moves it out of the furnace body 100 and places it on the ash dish tray 210.

[0036] The X-axis module, Y-axis module, and Z-axis module jointly form a three-axis truss structure, driving the gripper module 231 to be able to perform three-axis movement of front-back, left-right, and up-down to extend into the furnace cavity 101.

[0037] When this device is in use, the ash dish tray 210 is manually placed on the conveying chain plate 310. The conveying chain plate 310 starts the conveying blocking cylinder. After reaching the position, the centering mechanism 340 performs center positioning. After positioning, the clamping cylinder opens and the lifting mechanism 320 raises it to a set height. The shovel plate 220 starts to take materials. After reaching the ash dish, the lifting mechanism 320 drops, and the shovel plate 220 continues to move forward and convey it into the furnace body 100. At this time, the lifting cylinder 142 drives the support rod 141 to rise, catches all the ash dishes, and then the shovel plate 220 withdraws, completing the ash dish feeding.

[0038] The lifting cylinder 142 drives the support rod 141 to descend to perform the ash blowing process. It is irradiated by the supplementary light lamp 120 and monitored in real time by the endoscope camera. After waiting for the ash blowing to be completed, the coordinate data is read and transmitted to the PLC, and instructions are sent to the corresponding cylinders. The lifting cylinder 142 drives the support rod 141 to rise, raising the ash dishes completed by ash blowing. The material taking module 230 advances into the furnace to take materials, withdraws to directly above the ash dish tray 210, and through the combined movement of the X-axis module, Y-axis module, Z-axis module, and gripper module 231, retrieves the ash dishes and places them on the ash dish tray 210. Until all the ash dishes are completed, they are output by the conveying chain plate 310 and taken away manually to start the next round of ash dish work.

[0039] According to an embodiment of the present application, the beneficial effects of adopting this automatic ash blowing furnace are as follows: Automatically entering and exiting the furnace cavity, without frequently opening and closing the door, the temperature inside the furnace is stable, reducing energy consumption loss, reducing the emission of harmful gases, and helping to achieve cost reduction and efficiency increase; Adopting the method of supplementary light lamp and endoscope camera to collect image data is more reliable and accurate; and through the material taking module, the ash dishes well blown by ash are taken out in time, reducing the loss of metallic silver and increasing the extraction content.

[0040] Due to the automatic feeding and discharging of the ash pan, the automated operation is realized, and the work efficiency is increased by 50%. It can also be connected to fully automated equipment.

[0041] It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0042] Note that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0044] In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0045] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "above" etc. can be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "beneath" other devices or structures. Thus, the exemplary term "above" can include both the orientation of "above" and "below". The device can also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the corresponding explanations are made for the spatial relative descriptions used herein.

[0046] In the foregoing detailed description, reference has been made to the accompanying drawings, which form a part hereof. In the drawings, like numerals typically identify like components, unless the context otherwise indicates. The illustrated embodiments described in the detailed description, the drawings, and the claims are not meant to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0047] The foregoing are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automated ash blowing furnace, comprising a furnace body, characterized in that: A conveying device is arranged outside the furnace body, and is used to convey the ash tray into the furnace body. The furnace body is provided with an automatically opened and closed furnace door; an endoscope camera is arranged in the furnace body, and is used to monitor the end point of ash blowing.

2. The automatic ash blowing furnace according to claim 1, characterized in that: The conveying device includes an ash tray and an inlet and outlet module. The ash tray is provided with a plurality of ash tray positions for holding ash trays. The inlet and outlet module includes a shovel plate and a pushing cylinder. The pushing cylinder drives the shovel plate to place the ash tray in the furnace body.

3. The automatic ash blowing furnace according to claim 2, characterized in that: The conveying device also includes a lifting mechanism, which is used to lift the ash dish tray up and down; the shovel plate is provided with a plurality of shovel grooves, which are used to be inserted into the two sides of the ash dish to move the ash dish.

4. The automatic ash blowing furnace according to claim 3, characterized in that: A lifting mechanism is arranged in the furnace body, and the lifting mechanism is used to take the ash dish out of the shovel groove.

5. The automatic ash blowing furnace according to claim 4, characterized in that: The lifting mechanism includes a support rod and a lifting cylinder. The lifting cylinder drives the support rod to move up and down, and the support rod is used to lift the ash dish.

6. The automatic ash blowing furnace according to claim 5, characterized in that: The furnace body comprises a furnace chamber and a control chamber separated by a temperature-insulating wall. The lifting cylinder is located in the control chamber. The support rod penetrates the temperature-insulating wall to extend into the furnace chamber.

7. The automatic ash blowing furnace according to claim 6, characterized in that: The endoscope camera is located on the top of the furnace body and extends into the furnace cavity. A fill light is arranged on one side of the furnace body and extends into the furnace cavity.

8. The automatic ash blowing furnace according to claim 3, characterized in that: The conveying device is provided with a side conveyor belt, which is arranged perpendicular to the moving direction of the shovel plate and extends laterally from the conveying device. The side conveyor belt is used to input the ash dish tray into the conveying device, and the lifting mechanism is arranged in the side conveyor belt.

9. The automatic ash blowing furnace according to claim 8, characterized in that: The side conveyor belt includes a conveying chain plate, a positioning mechanism and a centering mechanism. The positioning mechanism is a blocking cylinder used to block the ash dish tray; the centering mechanism is a clamping cylinder located on both sides of the conveying chain plate to push the ash dish tray to be located in the middle of the conveying chain plate.

10. The automatic ash blowing furnace according to claim 2, characterized in that: The conveying device also includes a material taking module, which includes an X-axis module, a Y-axis module, a Z-axis module and a clamping claw module. The material taking module is used to clamp the ash dish from the furnace body to the ash dish tray.

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