Furnace cover with automatic opening and closing function for sample melting machine

Abstract

The utility model belongs to the field of sample melting machines, and discloses a furnace cover with an automatic opening and closing function for a sample melting machine, which is characterized in that the top of a hearth is connected with the furnace cover, an exhaust component is arranged on the furnace cover, first connecting plates are arranged on two sides of the furnace cover, second connecting plates are arranged on two sides of the hearth, and the second connecting plates are fixedly connected with a main shaft fixedly arranged behind the hearth. The first connecting plate and the second connecting plate are connected with a driving assembly at the bottom of the hearth through a traction assembly; the furnace cover can be automatically opened and closed, potential safety hazards such as scalding possibly caused by manual opening and closing of the furnace cover by workers are avoided, meanwhile, the traction assembly is designed more reasonably, the influence of high temperature on the traction assembly is reduced due to the adoption of stainless steel materials, the service life of the traction assembly is prolonged, the exhaust device is designed at the top of the furnace cover, and the service life of the furnace cover is prolonged. The corrosive gas generated in the melting process of the sample in the hearth can be discharged, so that the hearth and the furnace cover are prevented from being further damaged by the corrosive gas, and the service lives of the hearth and the furnace cover are greatly prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of melting machines, and in particular relates to a furnace cover for the melting machine with an automatic opening and closing function. Background Art

[0002] Fusion machines are used to melt or prepare samples of oxides, sulfides, and silicates, such as mining ores, metallurgical ores, and concentrates. Glass melting is generally used to prepare glass flakes, which are then analyzed by AAS, ICP, and X-fluorescence to obtain the required information.

[0003] When using the melting machine, place the sample to be melted into the crucible, then place the crucible into the furnace, cover the furnace so that the furnace can maintain the required temperature during the heating process, start the melting machine to complete the melting of the sample, and after melting is completed, introduce the sample in the crucible into the cooling dish to cool, and finally form a glass melt.

[0004] In the prior art, the furnace cover of the melting machine has the following main problems: 1. The opening and closing of the furnace cover is often done by the staff. Since the sample needs to be poured into the cooling dish as soon as possible after it is melted into liquid to ensure that the sample is cooled into a glass melt, when the staff opens the furnace cover, the temperature inside the furnace and the furnace cover has not yet dropped. If the staff opens the furnace cover at this time, it is very easy to be burned by the high temperature, which poses a great safety hazard; 2. Some furnace covers use belt drive instead of manual opening and closing of the furnace cover, but the temperature of the melting sample of the melting machine is very high. Under the influence of high temperature, the life of the drive belt is often relatively short and needs to be replaced frequently, which increases the workload of the staff and reduces production efficiency; 3. In the process of using the melting machine to melt samples, some samples will produce corrosive gases when melting. Since the furnace and the furnace cover must be kept closed during the melting process, the interior of the furnace and the furnace cover are in contact with the corrosive gas for a long time, which will corrode the interior of the furnace and the furnace cover, reducing the service life of the furnace and the furnace cover and increasing production costs.

[0005] In view of the above problems, a furnace cover for a melting machine with automatic opening and closing functions is proposed. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a furnace cover for a melting machine with an automatic opening and closing function. The utility model has a simple structure and is easy to use. It overcomes the safety hazards of manual opening and closing of the furnace cover by the staff, solves the problem that the service life of the transmission belt is short and needs frequent replacement, and solves the problem that the service life of the furnace chamber and the furnace cover is short when the melting machine melts samples that produce corrosive gases. The furnace cover of the melting machine can be automatically opened and closed, thereby extending the service life of the furnace cover.

[0007] The technical solution adopted by the utility model is: a furnace cover for a melting sample machine with an automatic opening and closing function, comprising a furnace, the top of the furnace is open and connected to the furnace cover, and an exhaust assembly is provided from the upper surface to the lower surface of the furnace cover; a first connecting plate is fixedly provided on the left and right sides of the furnace cover, and a second connecting plate is fixedly provided on the left and right sides of the furnace, one end of the second connecting plate is fixedly arranged at the rear ends of the left and right sides of the furnace, and the other end is fixedly connected to the main shaft fixedly arranged at the back of the furnace, and the main shaft is fixedly arranged at the rear of the furnace through the main shaft connecting assembly; the first connecting plate and the second connecting plate are connected to the driving assembly at the bottom of the furnace through a traction assembly. The driving assembly includes a fixed plate fixedly connected to the lower surface of the furnace, bearing seats are provided on both sides of the lower surface of the fixed plate, a worm reducer is fixedly provided at the middle position of the lower surface of the fixed plate, the worm reducer is connected to the stepping motor below, the left and right sides of the worm reducer are connected to the cover opening shaft, the cover opening shaft extends on both sides and passes through the bearing seats, and the two ends of the cover opening shaft are connected to the traction assembly, and a position sensing assembly is fixed on the cover opening shaft on one side of the worm reducer; the traction assembly includes an active rod, the active rod has two bottom ends and There are holes on the top of each of the two active rods, and the bottom ends of the two active rods are fixedly sleeved on the two ends of the cover opening shaft. The two ends of the cover opening shaft are sleeved with active rod limit sleeves, and the active rod limit sleeves are fixedly connected to the outside of the active rod; the openings on the top of the two active rods pass through the first linkage shaft respectively and are connected to the first linkage shaft. There are two first linkage shafts, the inner side of the first linkage shaft is connected to the top of the active rod, and the outer side is connected to the bottom end of the pull rod; there are two pull rods and holes are opened on the top and bottom ends of the pull rods, the top of the pull rod is connected to the second linkage shaft, there are two second linkage shafts, the outer side of the second linkage shaft is connected to the top of the pull rod, and the inner side is connected to the bottom end of the pull rod. The side is fixedly connected to the bottom end of the L-shaped connecting rod; there are two L-shaped connecting rods with holes in the middle and at both ends. The hole in the middle of the L-shaped connecting rod passes through the two ends of the main shaft and is movably connected to the main shaft. The inner side of the middle hole of the L-shaped connecting rod is movably connected to the second connecting plate, and the outer side of the middle hole of the L-shaped connecting rod is movably connected to the connecting rod sleeves at both ends of the main shaft. The upper end of the L-shaped connecting rod is connected to the rear end of the first connecting plate; the front end of the first connecting plate is connected to the second connecting plate through a driven rod. There are two driven rods, the upper end of which is movably connected to the first connecting plate, and the lower end is movably connected to the second connecting plate.

[0008] The position sensing assembly includes an annular switch fixing base fixedly connected to the fixing plate. Holes are respectively opened in the middle and lower parts of the switch fixing base, and a first proximity switch and a second proximity switch are respectively fixed in the holes. The angle between the first proximity switch and the second proximity switch is 30-60 degrees. The upper fixing sleeve of the cover opening shaft outside the switch fixing base is provided with a sensor plate fixing sleeve, and the sensor plate fixing sleeve is provided with a long strip of sensor plate. The sensor plate is arranged corresponding to the first proximity switch or the second proximity switch.

[0009] When the furnace cover is in a closed state, the induction sheet corresponds to the first proximity switch; when the furnace cover is open, the induction sheet corresponds to the second proximity switch.

[0010] A flanging copper sleeve is provided at the connection between the bottom end of the pull rod and the first linkage shaft and at the connection between the top end of the pull rod and the second linkage shaft.

[0011] The main shaft connecting assembly includes a connecting hook, one end of which is fixedly connected to the upper end of the rear surface of the furnace, and the other end is fixedly connected to the main shaft baffle. The main shaft baffle is sleeved at the middle position outside the main shaft and connected to the main shaft.

[0012] The furnace cover includes an outer shell and a sealing block. The sealing block is made of ceramic material and is arranged corresponding to the opening at the top of the furnace. The outer shell is arranged outside the sealing block, and the bottom of the outer shell is movably connected to the top of the furnace.

[0013] The exhaust assembly includes an exhaust pipe that runs through the furnace cover. The top of the exhaust pipe is connected to the cover. A pull ring is provided on the top of the cover. There are 2 to 6 exhaust assemblies, and the exhaust pipe is made of ceramic.

[0014] The pulling components are made of stainless steel.

[0015] A protective cover is provided on the side of the furnace where the main shaft is installed.

[0016] This furnace cover for a melting sample machine with an automatic opening and closing function, when the furnace cover needs to be opened, the stepper motor is started, the stepper motor drives the cover opening shaft to rotate forward through the worm reducer, the cover opening shaft drives the active rod to rotate downward, the active rod drives the pull rod, the pull rod drives the L-shaped connecting rod, the L-shaped connecting rod drives the furnace cover to rise, and the driven rod also moves with the movement of the furnace cover, the cover opening shaft drives the induction plate to rotate forward, when the induction plate corresponds to the second proximity switch, the second proximity switch sends a signal to the stepper motor, the stepper motor stops working, and the furnace cover opens; when the furnace cover needs to be closed, the stepper motor is started, the stepper motor is opened, and the stepper motor is opened. The feed motor drives the cover opening shaft to reverse through the worm reducer, and the cover opening shaft drives the active rod to rotate upward, the active rod drives the pull rod, the pull rod drives the L-shaped connecting rod, the L-shaped connecting rod drives the furnace cover to fall, and the driven rod also moves with the movement of the furnace cover. The cover opening shaft drives the sensor plate to reverse. When the sensor plate corresponds to the first proximity switch, the first proximity switch sends a signal to the stepper motor, the stepper motor stops working, and the furnace cover is closed; when the gas in the furnace needs to be discharged, the cover on the exhaust pipe is lifted by the pull ring, and the gas is discharged along the exhaust pipe. After the exhaust is completed, the cover is covered on the exhaust pipe.

[0017] The furnace cover is equipped with an exhaust assembly. When the sample in the furnace produces relatively strong corrosive gas during the melting process, the staff can open the cover to let the corrosive gas be discharged from the exhaust pipe. This can prevent the corrosive gas from remaining in the furnace for a long time and corroding the furnace and furnace cover, especially extending the service life of the furnace cover.

[0018] The cooperation between the traction component and the drive component can complete the automatic opening and closing of the furnace cover, avoiding the safety hazards of manual opening and closing of the furnace cover. When the furnace cover is opened or closed to a certain extent, the position sensor device will control the stepper motor to close, which can further save labor.

[0019] The worm reducer is self-locking. After the stepper motor stops rotating, it can keep the lid opening shaft in a fixed position without rotating on its own, improving safety and stability and preventing the furnace cover from shifting when the staff opens it to take samples.

[0020] The beneficial effects of the utility model are:

[0021] The utility model has a simple structure and is easy to use, so that the furnace cover can be opened and closed automatically, avoiding the safety hazards such as burns caused by manual opening and closing of the furnace cover by the staff. At the same time, the traction component is designed more reasonably, and the use of stainless steel also reduces the impact of high temperature on the traction component, thereby increasing the service life of the traction component. An exhaust device is designed on the top of the furnace cover, so that the corrosive gas generated by the sample in the furnace during the melting process can be discharged, thereby avoiding the corrosive gas from further damaging the furnace and the furnace cover, and greatly extending the service life of the furnace and the furnace cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the rear side of the utility model;

[0023] Figure 2 It is a structural diagram of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the driving device of the utility model;

[0025] Figure 4 This is a schematic diagram of the exhaust assembly structure of the present utility model.

[0026] Markings in the figure: 1. furnace chamber; 2. furnace cover, 21. outer shell, 22. sealing block; 3. exhaust assembly, 31. exhaust pipe, 32. cover, 33. pull ring; 4. first connecting plate; 5. second connecting plate; 6. main shaft; 7. main shaft connecting assembly, 71. connecting hook, 72. main shaft baffle; 8. traction assembly, 81. active rod, 82. active rod limit sleeve, 83. first linkage shaft, 84. pull rod, 85. second linkage shaft, 86. L-shaped connecting rod, 87. connecting rod gasket, 88. driven rod; 9. drive assembly, 91. fixing plate, 92. bearing seat, 93. worm reducer, 94, position sensor assembly, 941. switch fixing seat, 942. first proximity switch, 943. second proximity switch, 944. induction plate fixing sleeve, 945. induction plate, 95. stepping motor, 96. cover opening shaft; 10. protective cover. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0028] As shown in the figure, a furnace cover for a melting sample machine with an automatic opening and closing function includes a furnace chamber 1, the top of the furnace chamber 1 is open and connected to the furnace cover 2, the furnace cover 2 includes an outer shell 21 and a sealing block 22, the sealing block 22 is made of ceramic material, and the sealing block 22 is arranged corresponding to the opening on the top of the furnace chamber 1; the outer shell 21 is arranged outside the sealing block 22, and the bottom of the outer shell 21 is movably connected to the top of the furnace chamber 1; an exhaust component 3 is provided from the upper surface to the lower surface of the furnace cover 2, the exhaust component 3 includes an exhaust pipe 31 arranged through the furnace cover 2, the top of the exhaust pipe 31 is connected to the lid 32, and the top of the lid 32 is provided with a pull ring 33, there are 2-6 exhaust components 3, and the exhaust pipe 31 is made of ceramic material; the left and right sides of the furnace cover 2 are respectively fixed with a first connecting plate 4 in the horizontal direction, and the left and right sides of the furnace chamber 1 are respectively fixed with a first connecting plate 4 in the horizontal direction There is a second connecting plate 5, one end of the second connecting plate 5 is fixedly arranged at the rear end of the left and right sides of the furnace 1, and the other end is fixedly connected to the main shaft 6 fixedly arranged at the back of the furnace 1. A protective cover 10 is provided on one side of the furnace 1 where the main shaft 6 is installed. The main shaft 6 is fixedly arranged at the rear of the furnace 1 through a main shaft connecting assembly 7. The main shaft connecting assembly 7 includes a connecting hook 71, one end of the connecting hook 71 is fixedly connected to the upper end of the rear surface of the furnace 1, and the other end is fixedly connected to the main shaft baffle 72. The main shaft baffle 72 is sleeved in the middle position outside the main shaft 6 and is connected to the main shaft 6; the first connecting plate 4 and the second connecting plate 5 are connected to the driving assembly 9 at the bottom of the furnace 1 through the traction assembly 8. The driving assembly 9 includes a fixing plate 91 fixedly connected to the lower surface of the furnace 1, and two sides of the lower surface of the fixing plate 91 are provided There is a bearing seat 92, and a worm reducer 93 is fixedly set in the middle position of the lower surface of the fixed plate 91. The lower part of the worm reducer 93 is connected to the stepping motor 95. The left and right sides of the worm reducer 93 are connected to the cover opening shaft 96. The cover opening shaft 96 extends to both sides and passes through the bearing seat 92. The two ends of the cover opening shaft 96 are connected to the traction assembly 8. A position sensing assembly 94 is fixed on the cover opening shaft 96 on one side of the worm reducer 93; the position sensing assembly 94 includes an annular switch fixing seat 941 fixedly connected to the fixed plate 91, and the middle and lower parts of the switch fixing seat 941 are respectively provided with holes, and a first proximity switch 942 and a second proximity switch 943 are respectively fixed in the holes, and the angle between the first proximity switch 942 and the second proximity switch 943 is 30-60 degrees. , a fixed sleeve is provided on the cover opening shaft 96 outside the switch fixing seat 941, and a sensor piece fixing sleeve 944 is provided on the sensor piece fixing sleeve 944. A long strip of sensor piece 945 is provided on the sensor piece fixing sleeve 944. The sensor piece 945 is arranged corresponding to the first proximity switch 942 or the second proximity switch 943; when the furnace cover 2 is in the closed state, the sensor piece 945 corresponds to the first proximity switch 942, and when the furnace cover 2 is opened, the sensor piece 945 corresponds to the second proximity switch 943; the traction assembly 8 is made of stainless steel and includes an active rod 81. There are two active rods 81 and holes are opened at the bottom and top ends. The bottom ends of the two active rods 81 are fixedly sleeved on both ends of the cover opening shaft 96, and active rod limiting sleeves 82 are provided at both ends of the cover opening shaft 96. The active rod limiting sleeve 82 is fixedly connected to the outer side of the active rod 81;The openings at the top of the two active rods 81 pass through the first linkage shaft 83 respectively and are connected to the first linkage shaft 83. There are two first linkage shafts 83. The inner side of the first linkage shaft 83 is connected to the top of the active rod 81, and the outer side is connected to the bottom end of the pull rod 84; there are two pull rods 84 and holes are opened at the top and bottom ends. The top of the pull rod 84 is connected to the second linkage shaft 85. The connection between the bottom end of the pull rod 84 and the first linkage shaft 83 and the connection between the top end of the pull rod 84 and the second linkage shaft 85 are both provided with a flanging copper sleeve; there are two second linkage shafts 85. The outer side of the second linkage shaft 85 is connected to the top of the pull rod 84, and the inner side is fixedly connected to the L-shaped connecting rod The bottom end of 86; there are two L-shaped connecting rods 86 with holes in the middle and at both ends. The hole in the middle of the L-shaped connecting rod 86 passes through both ends of the main shaft 6 and is movably connected to the main shaft 6. The inner side of the middle hole of the L-shaped connecting rod 86 is movably connected to the second connecting plate 5, and the outer side of the middle hole of the L-shaped connecting rod 86 is movably connected to the connecting rod bushings 87 fixedly mounted on both ends of the main shaft 6. The upper end of the L-shaped connecting rod 86 is connected to the rear end of the first connecting plate 4; the front end of the first connecting plate 4 is connected to the second connecting plate 5 via a driven rod 88. There are two driven rods 88, the upper end of which is movably connected to the first connecting plate 4 and the lower end of which is movably connected to the second connecting plate 5.

[0029] When the furnace cover 2 needs to be opened, the stepper motor 95 is started, and the stepper motor 95 drives the cover opening shaft 96 to rotate forward through the worm reducer 93. The cover opening shaft 96 drives the active rod 81 to rotate downward, and the active rod 81 drives the pull rod 84, and the pull rod 84 drives the L-shaped connecting rod 86. The L-shaped connecting rod 86 drives the furnace cover 2 to rise, and the driven rod 88 also moves with the movement of the furnace cover 2. The cover opening shaft 96 drives the induction plate 945 to rotate forward. When the induction plate 945 is close to the second opening, the induction plate 945 is opened. When the switch 943 corresponds, the second proximity switch 943 sends a signal to the stepper motor 95, the stepper motor 95 stops working, and the furnace cover 2 opens; when the furnace cover 2 needs to be closed, the stepper motor 95 is started, and the stepper motor 95 drives the cover opening shaft 96 to reverse through the worm reducer 93, and the cover opening shaft 96 drives the active rod 81 to rotate upward, the active rod 81 drives the pull rod 84, the pull rod 84 drives the L-shaped connecting rod 86, and the L-shaped connecting rod 86 drives the furnace cover 2 to fall, and the driven rod 88 also moves with the movement of the furnace cover 2, and the furnace cover 2 opens. The cover shaft 96 drives the induction plate 945 to reverse. When the induction plate 945 corresponds to the first proximity switch 942, the first proximity switch 942 sends a signal to the stepper motor 95, the stepper motor 95 stops working, and the furnace cover 2 is closed; when the gas in the furnace chamber 1 needs to be discharged, the cover 32 on the exhaust pipe 31 is lifted by the pull ring 33, and the gas is discharged along the exhaust pipe 31. After the exhaust is completed, the cover 33 is covered on the exhaust pipe 31; the utility model has a simple structure and is easy to use. A more reasonable traction component is designed. The use of stainless steel material also reduces the impact of high temperature on the traction component and improves the service life of the traction component. Through the cooperation of the driving device and the traction component, the furnace cover can be automatically opened and closed, avoiding the safety hazards such as burns caused by manual opening and closing of the furnace cover by the staff. An exhaust device is designed on the top of the furnace cover, so that the corrosive gas generated by the sample in the furnace during the melting process can be discharged, avoiding the corrosive gas further damaging the furnace chamber and the furnace cover, and greatly extending the service life of the furnace chamber and the furnace cover.

Claims

1. A furnace cover for a fusion machine with an automatic opening and closing function, comprising a furnace chamber, an opening at the top of the furnace chamber connected to the furnace cover, characterized in that: The cam is fixedly provided with a first connecting plate on each of the left and right sides of the furnace, and a second connecting plate is fixedly provided on each of the left and right sides of the furnace, and one end of the second connecting plate is fixedly provided on the rear ends of the left and right sides of the furnace, and the other end is fixedly connected to the main shaft fixedly provided at the back of the furnace, and the main shaft is fixedly provided at the rear of the furnace through the main shaft connecting assembly; the first connecting plate and the second connecting plate are connected to the driving assembly at the bottom of the furnace through the traction assembly; the driving assembly includes a fixed plate fixedly connected to the lower surface of the furnace, and bearing seats are provided at both ends of the lower surface of the fixed plate, and a worm reducer is fixedly provided at the middle position of the lower surface of the fixed plate, and the worm reducer is connected to the stepping motor below the worm reducer, and the left and right sides of the worm reducer are connected to the cover opening shaft, and the cover opening shaft extends at both sides and passes through the bearing seats. Both ends of the cover opening shaft are connected to the traction assembly, and a position sensing assembly is fixed on the cover opening shaft on one side of the turbine reducer; the traction assembly includes an active rod, and the active rod has two holes, and the bottom ends of the two active rods are fixedly sleeved on both sides of the cover opening shaft The two ends of the L-shaped connecting rod are connected to the first and second connecting rods, and the two ends of the L-shaped connecting rod are connected to the second connecting rod by the outer sleeve of the L-shaped connecting rod.

2. The furnace cover for a fusion machine with automatic opening and closing function according to claim 1 is characterized in that: The position sensing assembly includes an annular switch fixing base fixedly connected to the fixing plate. Holes are respectively opened in the middle and lower parts of the switch fixing base, and a first proximity switch and a second proximity switch are respectively fixed in the holes. The angle between the first proximity switch and the second proximity switch is 30-60 degrees. The upper fixing sleeve of the cover opening shaft outside the switch fixing base is provided with a sensor plate fixing sleeve, and the sensor plate fixing sleeve is provided with a long strip of sensor plate. The sensor plate is arranged corresponding to the first proximity switch or the second proximity switch.

3. The furnace cover for a fusion machine with automatic opening and closing function according to claim 2, characterized in that: When the furnace cover is in a closed state, the induction sheet corresponds to the first proximity switch; when the furnace cover is open, the induction sheet corresponds to the second proximity switch.

4. The furnace cover for a fusion machine with automatic opening and closing function according to claim 1 is characterized in that: A flanging copper sleeve is provided at the connection between the bottom end of the pull rod and the first linkage shaft and at the connection between the top end of the pull rod and the second linkage shaft.

5. The furnace cover for a fusion machine with automatic opening and closing function according to claim 1 is characterized in that: The main shaft connecting assembly includes a connecting hook, one end of which is fixedly connected to the upper end of the rear surface of the furnace, and the other end is fixedly connected to the main shaft baffle. The main shaft baffle is sleeved at the middle position outside the main shaft and connected to the main shaft.

6. The furnace cover for a fusion machine with automatic opening and closing function according to claim 1 is characterized in that: The furnace cover includes an outer shell and a sealing block. The sealing block is made of ceramic material and is arranged corresponding to the opening at the top of the furnace. The outer shell is arranged outside the sealing block, and the bottom of the outer shell is movably connected to the top of the furnace.

7. The furnace cover for a fusion machine with automatic opening and closing function according to claim 1, characterized in that: The exhaust assembly includes an exhaust pipe that runs through the furnace cover. The top of the exhaust pipe is connected to the cover. A pull ring is provided on the top of the cover. There are 2 to 6 exhaust assemblies, and the exhaust pipe is made of ceramic.

8. The furnace cover for a fusion machine with automatic opening and closing function according to claim 1, characterized in that: The pulling components are made of stainless steel.

9. The furnace cover for a fusion machine with automatic opening and closing function according to claim 1, characterized in that: A protective cover is provided on the side of the furnace where the main shaft is installed.

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