Muffle furnace for ore inspection

Abstract

The utility model discloses a muffle furnace for ore inspection, which comprises a body, a placing mechanism is arranged in a furnace chamber of the body, and the placing mechanism comprises a placing plate; the placing plate is connected with a grab handle; the grab handle extends out of a furnace opening of the furnace chamber; the grab handle is connected with a guide frame, and the guide frame extends into the furnace cavity along with the placing plate to form a push-pull structure; sheltering devices are installed on the body and located on the two sides of the furnace mouth, each sheltering device comprises a sheltering plate and a lifting mechanism, the sheltering plates are connected with the lifting mechanisms, and the lifting mechanisms are in butt joint with the guide frames and are installed on the body; after the placing plate is pushed into the furnace cavity, the shielding plate descends along with the lifting mechanism to close the furnace opening, and when the placing plate is pulled out of the furnace cavity, the lifting mechanism is lifted through the guide frame, so that the shielding plate ascends to open the furnace opening. In this way, the furnace mouth can be automatically opened and closed in the process of taking out and putting in the ore sample for detection, and therefore the ore detection efficiency can be improved, and the safety can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical inspection, in particular to a muffle furnace used for ore chemical inspection. Background Art

[0002] Muffle furnace is a commonly used heating tool in industrial production and experimental analysis, mainly used for high-temperature roasting, melting, ashing and other treatments of samples. For example, patent CN217033313U discloses a muffle furnace anti-scalding device for detection, including a connecting pipe, the lower end of which is connected to a rectangular frame, the upper end of the connecting pipe is connected to a transmission housing, a transmission cavity is provided in the center of the transmission housing, the left and right sides of the transmission cavity are respectively rotatably connected with screws, one end of the two screws is connected to a driven bevel gear, the interior of the connecting pipe is rotatably connected with a rotating shaft, the upper end of the rotating shaft is connected to an active bevel gear, the two screws are respectively threadedly connected with moving blocks, the upper sides of the two moving blocks are respectively connected with clamping arms, the upper side wall of the transmission housing is provided with a slide groove, the two clamping arms respectively pass through the slide groove and are slidably connected with the slide groove, and the lower surface of the rectangular frame is connected with a telescopic handle. Through the action of the first screw, the stability of the tightening of the test sample is achieved, avoiding the problem of the test sample falling during the clamping process.

[0003] However, when the muffle furnace anti-scalding device is in operation, the furnace door is closed. When the sample needs to be taken out, the furnace door must be opened. Since the entire processing time is relatively long, when the sample processing status is to be understood, the furnace door needs to be opened and the sample needs to be taken out for observation. During one inspection, the furnace door needs to be opened and closed many times to understand the progress of the sample processing and the changes in appearance. This not only makes the operation process more cumbersome and affects the inspection efficiency, but also easily causes the risk of scalding to the staff during the process of opening and closing the furnace door. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a muffle furnace for ore inspection which is simple in structure, easy to operate, can automatically open and close the furnace mouth when taking out and putting in ore, and has higher inspection efficiency and safety.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: a muffle furnace for ore inspection, including a main body, a placing mechanism is arranged in the furnace cavity of the main body, the placing mechanism includes a placing plate, characterized in that: the placing plate is connected with a handle, the handle extends out of the furnace mouth of the furnace cavity; the handle is connected with a guide frame, the guide frame extends into the furnace cavity together with the placing plate to form a push-pull structure; a shielding device is installed on the main body at positions on both sides of the furnace mouth, the shielding device includes a shielding plate and a lifting mechanism, the shielding plate is connected to the lifting mechanism, the lifting mechanism is docked with the guide frame and installed on the main body; after the placing plate is pushed into the furnace cavity, the shielding plate is lowered along with the lifting mechanism to shield and close the furnace mouth, and when the placing plate is pulled out of the furnace cavity, the lifting mechanism is lifted by the guide frame to make the shielding plate rise to open the furnace mouth.

[0006] Furthermore, a guide frame is connected to each side of the handle, and the guide frame has a slope portion that gradually rises from front to back, and a horizontal portion is connected behind the slope portion; push-pull slide grooves corresponding to the guide frames are arranged on both sides of the furnace mouth of the main body, and the guide frames are movably arranged in the push-pull slide grooves.

[0007] Furthermore, a roller is installed at the bottom of the lifting mechanism, and the roller is pressed on the guide frame. When the placement mechanism is pulled out, the roller is pushed by the slope of the guide frame to lift the lifting mechanism to lift the baffle plate to open the furnace mouth, making the opening and closing process of the baffle plate smoother.

[0008] Furthermore, the lifting mechanism includes a sliding rod and a sliding column, the sliding rod is sleeved on the sliding column, and the two ends of the baffle are respectively connected to the two sliding rods; the two sliding columns are vertically arranged on both sides of the furnace mouth, and the upper and lower ends of the sliding columns are respectively connected and fixed to the main body through fixed seats; the upper part of the sliding rod is connected to a stop seat, and a spring is sleeved on the part of the sliding column located above the stop seat; a connecting part is provided on the lower side of the sliding rod, and the roller is installed on the bottom surface of the connecting part.

[0009] Preferably, the placement plate is made of a refractory fiberboard, on which a placement groove is formed by baffle bars for placing the ore sample.

[0010] Furthermore, the placement plate is connected to the handle through a section of heat insulation; connecting arms are connected to both sides of the handle through a section of heat insulation, and the connecting arms are connected to the guide frame; the surface of each heat insulation part has a concave and convex structure, which can accelerate heat dissipation and minimize the heat generated by heating in the furnace cavity transferred to the handle, so that the handle will not get hot.

[0011] Preferably, the guide frame, connecting arm, handle, heat insulation part and placement plate are an integrated structure, and can be pulled out as a whole by pulling the handle.

[0012] Furthermore, a slope section that slopes downwards to the rear is provided at the rear of the guide frame, so that the entire guide frame forms a trapezoidal structure, so that the shielding plate can be slowly raised and lowered when the entire placement plate is pulled out.

[0013] Furthermore, the connecting portion, the sliding rod and the shielding plate are an integrated structure, and are made of metal material by integral molding.

[0014] Furthermore, the guide frame is located outside the sliding column to avoid interference with the lifting and lowering movement of the shielding plate.

[0015] Compared with the prior art, the advantages of the utility model are: 1. When inspecting the ore, the placement component can be pulled out of the furnace mouth, and when the placement component is pulled out of the furnace mouth, the cover component will slide upward together to expand the furnace mouth; then the ore can be placed on the upper surface of the placement component and pushed back into the furnace mouth, and when pushed back into the furnace mouth, the cover component will fall down to cover the furnace mouth, and then the heating of the muffle furnace body can be started to perform the ore inspection operation. When it is necessary to observe it in the middle of heating, the furnace mouth can be expanded by pulling the placement component and driving the cover component at the same time, and with continuous pulling, the placement component can be stretched out of the furnace mouth with the ore, and it can be pushed back after the observation is completed. As the push back is carried out, the cover component will also fall down to cover the furnace mouth, thereby achieving the effect of automatically opening and closing the furnace mouth, reducing the operating steps in the process of taking out and putting in the ore, and improving the inspection efficiency of the ore;

[0016] 2. When the placement component is pulled out from the furnace mouth, the roller will roll on the surface of the placement component, and as the placement component is pulled out longer, the placement component will push the roller to a higher position, and the roller will push the slide bar to slide upward on the surface of the slide column, and at the same time push the spring, so that the spring applies an elastic thrust to the slide bar. This can drive the cover plate between the slide columns to slide upward from one side of the furnace mouth and unfold, achieving the effect of automatically unfolding the furnace mouth;

[0017] The placement component carries the ore placed on the surface out of the furnace mouth. When the placement component is pushed back into the furnace mouth after observing the ore, the roller will also roll on the surface of the placement component. As the placement component is continuously pushed back, the roller will roll from the high position of the placement component to the low position, so that the slide rod carrying the cover plate can slide downward on the surface of the slide column, and at the same time, it will be pushed back by the elastic thrust exerted by the spring, so that the cover plate can touch the upper surface of the placement component through the elastic force to cover the furnace mouth, thereby achieving the effect of automatically closing the furnace mouth.

[0018] 3. When testing the ore, you can pull the refractory fiberboard out of the furnace mouth by holding the outer surface of the handle and pulling it backwards, and at the same time, it will drive the guide blocks on both sides to slide out of the long frame chute. The sliding guide block will cause the roller to roll on the surface. As the refractory fiberboard continues to be pulled out, the guide block will drive the conical rail to slide out of the long frame chute, so that the roller can slide along the conical rail, so that the roller can be pushed to a high place to open the furnace mouth. At the same time, the refractory fiberboard will also be pulled out of the furnace mouth with the baffle plate, and the ore can be placed in the baffle plate, and then the refractory fiberboard will be pushed back into the furnace mouth again, and the process of pushing the refractory fiberboard back will also drive the conical rail to be pushed back into the long frame chute. As a result, the roller rolls down from the height of the conical rail, realizing the automatic closure of the furnace mouth, and at the same time, the refractory fiberboard will also be pushed back into the furnace mouth with the baffle plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the placement mechanism of the utility model in the pulled-out state;

[0021] Figure 3 This is a schematic diagram of the structure of the utility model after the main body is removed;

[0022] Figure 4 It is a structural diagram of the placement mechanism.

[0023] In the figure, 1 is a main body, 11 is a push-pull slide, 12 is a furnace mouth, 2 is a shielding device, 21 is a fixed seat, 22 is a sliding column, 23 is a spring, 24 is a sliding rod, 25 is a shielding plate, 26 is a connecting part, 27 is a roller, 28 is a stop seat, 3 is a placing mechanism, 31 is a placing plate, 32 is a blocking bar, 33 is a guide frame, 34 is a heat insulation part, 35 is a handle, 36 is a slope part, 37 is a horizontal part, 38 is a placing groove, and 39 is a connecting arm. DETAILED DESCRIPTION

[0024] In this embodiment, refer to Figure 1-Figure 4The muffle furnace for ore inspection includes a main body 1, a placing mechanism 3 is arranged in the furnace cavity of the main body 1, and the placing mechanism 3 includes a placing plate 31; the placing plate 31 is connected to a handle 35, and the handle 35 extends outside the furnace mouth 12 of the furnace cavity; the handle 35 is connected to a guide frame 33, and the guide frame 33 extends into the furnace cavity together with the placing plate 31 to form a push-pull structure; a shielding device 2 is installed at positions on both sides of the furnace mouth 12 on the main body 1, and the shielding device 2 includes a shielding plate 25 and a lifting mechanism, the shielding plate 25 is connected to the lifting mechanism, and the lifting mechanism is docked with the guide frame 33 and installed on the main body 1; after the placing plate 31 is pushed into the furnace cavity, the shielding plate 25 is lowered with the lifting mechanism to shield and close the furnace mouth 12, and when the placing plate 31 is pulled out of the furnace cavity, the lifting mechanism is raised by the guide frame 33 to make the shielding plate 25 rise and open the furnace mouth 12.

[0025] A guide frame 33 is connected to each side of the handle 35. The guide frame 33 has a slope portion 36 that gradually rises from front to back, and a horizontal portion 37 is connected behind the slope portion 36. Push-pull slide grooves 11 corresponding to the guide frames 33 are arranged on both sides of the furnace mouth 12 of the main body 1, and the guide frames 33 are movably arranged in the push-pull slide grooves 11.

[0026] A roller 27 is installed at the bottom of the lifting mechanism, and the roller 27 is pressed on the guide frame 33. When the placement mechanism 3 is pulled out, the roller 27 is pushed by the slope portion 36 of the guide frame 33 to lift the lifting mechanism to achieve the lifting of the baffle plate 25 to open the furnace mouth 12, making the opening and closing process of the baffle plate 25 smoother.

[0027] The lifting mechanism includes a slide bar 224 and a slide column 22. The slide bar 24 is sleeved on the slide column 22. The two ends of the shielding plate 25 are respectively connected to the two slide bars 24. The two slide columns 22 are vertically arranged on both sides of the furnace mouth 12, and the upper and lower ends of the slide column 22 are respectively connected and fixed to the body 1 through the fixing seat 21. The upper part of the slide bar 24 is connected to the stop seat 28, and the spring 23 is sleeved on the part of the slide column 22 located above the stop seat 28. The lower side of the slide bar 24 is provided with a connecting part 26, and the roller 27 is installed on the bottom surface of the connecting part 26. The guide frame 33 is located outside the slide column 22 to avoid interference with the lifting and lowering movement of the shielding plate 25.

[0028] The placement plate 31 is made of a refractory fiberboard, on which a placement groove 38 is formed by a baffle 32 for placing ore samples.

[0029] The placement plate 31 is connected to the handle 35 through a section of heat insulation 34; connecting arms 39 are connected to the two sides of the handle 35 through each section of heat insulation 34, and the connecting arms 39 are connected to the guide frame 33; the surface of each heat insulation part 34 has a concave and convex structure, which can accelerate the heat dissipation and minimize the heat generated by the heating in the furnace cavity from being transferred to the handle 35, so that the handle will not get hot.

[0030] The guide frame 33, the connecting arm 39, the handle 35, the heat insulating part 34 and the placement plate 31 are an integrated structure, and the entire structure can be pulled out by pulling the handle 35. The connecting part 26, the slide bar 24 and the shielding plate 25 are an integrated structure, and are made of metal materials in one piece.

[0031] A slope section that slopes downwards to the rear is provided at the rear of the guide frame 33 , so that the entire guide frame 33 forms a trapezoidal structure, so that the shielding plate 25 can be slowly raised and lowered when the entire placement plate 31 is pulled out.

[0032] When the placement plate 31 is fully pushed into the furnace cavity, the slide bar 24 falls along the slide column 22, causing the shielding plate 25 to also fall together to close the furnace mouth 12 and press on the placement plate. If you need to observe the sample or take out the sample during the process, hold the handle 35 and pull it outward, so that the placement plate 31 and the guide frame 33 are pulled out together, and the roller 27 rolls upward along the slope 36, so that the slide bar 24 rises along the slide column 22 and compresses the spring 23, and the shielding plate 25 also rises accordingly. When the roller 27 rolls to the horizontal part 37 of the guide frame 33, the shielding plate 25 rises to the highest position, and the furnace mouth 12 is fully opened at this time, and the sample is also pulled out of the furnace cavity along with the placement plate 31. When loading the sample, the placing plate 31 is pushed inward by the handle 35, and the guide frame 33 slides from the push-pull slide groove 11 to the inside of the body 1, and the roller 27 rolls forward from the horizontal part 37 to the slope part 36, and the shielding plate 25 begins to descend under the action of its own gravity and the elastic force of the spring 23. After the placing plate 31 is pushed into the furnace cavity, the roller 27 rolls to the bottom of the slope, and the shielding plate 25 is lowered to the lowest position to completely close the furnace mouth 12.

[0033] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A muffle furnace for ore inspection, comprising a main body, a placing mechanism is arranged in the furnace chamber of the main body, the placing mechanism comprises a placing plate, and is characterized in that: The placement plate is connected to a handle, which extends out of the furnace mouth of the furnace cavity; the handle is connected to a guide frame, which extends into the furnace cavity together with the placement plate to form a push-pull structure; a shielding device is installed on the main body at positions on both sides of the furnace mouth, and the shielding device includes a shielding plate and a lifting mechanism, the shielding plate is connected to the lifting mechanism, and the lifting mechanism is docked with the guide frame and installed on the main body; after the placement plate is pushed into the furnace cavity, the shielding plate is lowered along with the lifting mechanism to shield and close the furnace mouth, and when the placement plate is pulled out of the furnace cavity, the lifting mechanism is lifted by the guide frame to cause the shielding plate to rise and open the furnace mouth.

2. The muffle furnace for ore testing according to claim 1, characterized in that: A guide frame is connected to each side of the handle. The guide frame has a slope portion that gradually rises from front to back, and a horizontal portion is connected behind the slope portion. Push-pull slide grooves corresponding to the guide frames are arranged on both sides of the furnace mouth of the main body, and the guide frames are movably arranged in the push-pull slide grooves.

3. The muffle furnace for ore testing according to claim 2, characterized in that: A roller is installed at the bottom of the lifting mechanism, and the roller is pressed on the guide frame. When the placement mechanism is pulled out, the roller is pushed by the slope of the guide frame to lift the lifting mechanism to lift the baffle plate and open the furnace mouth.

4. The muffle furnace for ore testing according to claim 3, characterized in that: The lifting mechanism includes a sliding rod and a sliding column. The sliding rod is sleeved on the sliding column, and the two ends of the shielding plate are respectively connected to the two sliding rods; the two sliding columns are vertically arranged on both sides of the furnace mouth, and the upper and lower ends of the sliding columns are respectively connected and fixed to the main body through fixed seats; the upper part of the sliding rod is connected to a stop seat, and a spring is sleeved on the part of the sliding column located above the stop seat; a connecting part is arranged on the lower side of the sliding rod, and the roller is installed on the bottom surface of the connecting part.

5. The muffle furnace for ore testing according to claim 1, characterized in that: The placement plate is made of a fire-resistant fiberboard, on which a placement groove is formed by blocking bars.

6. The muffle furnace for ore testing according to claim 1, characterized in that: The placement plate is connected to the handle through a section of heat insulation; connecting arms are connected to the guide frame through each section of heat insulation on both sides of the handle; the surface of each heat insulation part is a concave-convex structure.

7. The muffle furnace for ore testing according to claim 6, characterized in that: The guide frame, the connecting arm, the handle, the heat insulating part and the placement plate are an integrated structure.

8. The muffle furnace for ore testing according to claim 2, characterized in that: A slope section which slopes downwards to the rear is arranged at the rear of the guide frame, so that the whole guide frame forms a trapezoidal structure.

9. The muffle furnace for ore testing according to claim 4, characterized in that: The connecting part, the sliding rod and the shielding plate are an integrated structure.

10. The muffle furnace for ore testing according to claim 4, characterized in that: The guide frame is located outside the slide column.

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