Integrated muffle furnace

Abstract

The utility model belongs to the technical field of muffle furnace mechanical equipment, and particularly relates to an integrated muffle furnace which comprises an incineration device, a heating box is arranged in the incineration device, a stepping motor is installed on one side of the heating box, the output end of the stepping motor is connected with a coupling device, and the other end of the coupling device is detachably connected with an incineration bin. The incineration cabin is slidably connected to the interior of the heating box through a sliding rail drawing type structure; an outlet of the incineration bin is sequentially connected with a condensing device and a collecting device, and pyroligneous liquor generated after combustion is condensed and collected. The muffle furnace effectively overcomes the defects that a muffle furnace in the market cannot achieve sufficient combustion, smoke collection is inconvenient, feeding and discharging are inconvenient, and a smoke exhaust pipe is blocked, and the service life of the muffle furnace is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of muffle furnace mechanical equipment, and specifically relates to an integrated muffle furnace. Background Art

[0002] Muffle furnaces are particularly important in thermal processing, the pharmaceutical industry, analytical chemistry, and coal quality analysis. In the coal quality analysis industry, they are used as general-purpose ashing furnaces. The biochar they recover is used as a soil conditioner charcoal that helps plant growth and can be used for agricultural purposes and carbon collection and storage. Different from traditional charcoal that is generally used as fuel, the recovered wood vinegar is an indispensable material for pesticide production and has a wide range of applications.

[0003] In recent years, with the increase in the use of biochar and wood vinegar, the utilization rate of muffle furnaces has gradually increased. In the process of using muffle furnaces to recover biochar, traditional muffle furnaces often have problems such as tar blockage and outflow, incomplete combustion of biochar, and low recovery efficiency when using cotton straw, jujube straw, etc. There are certain defects when using them, such as insufficient combustion, inability to collect flue gas, blockage of exhaust pipes, and excessive pressure in the inner cavity that is difficult to release. It requires a certain amount of manpower to participate in the investment, resulting in low efficiency and short life of the muffle furnace. At the same time, it is inconvenient to collect the combustion materials, and the expected effect is not achieved when burning crop straw.

[0004] Therefore, in order to make the crop straw burn fully and obtain more sufficient biochar, and on the other hand to recycle the straw gasification to produce wood vinegar, a new muffle furnace has become an indispensable equipment in its production, and the market prospect is very broad. The various muffle furnaces currently popular in the market are only modifications of various aspects such as heating equipment, without considering the problem of resource waste of raw materials during the pyrolysis process, and thus cannot achieve more efficient utilization. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide an integrated muffle furnace, wherein the muffle furnace body is modified so that the crop straw can be fully burned, and a condenser pipe is added to the smoke outlet to collect wood vinegar, thereby reducing resource waste.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An integrated muffle furnace comprises an incineration device, wherein a heating box is arranged inside the incineration device, a stepper motor is installed on one side of the heating box, an output end of the stepper motor is connected with a shaft connection device, and the other end of the shaft connection device is detachably connected with an incineration chamber; the incineration chamber is slidably connected to the inside of the heating box through a slide rail pull-out structure; the outlet of the incineration chamber is connected with a condensing device and a collecting device in sequence to condense and collect wood vinegar produced after combustion.

[0008] Furthermore, the heating box is provided with multiple layers of heating resistance wires, and the internal combustion materials are heated evenly by the heating of the multiple layers of resistance wires.

[0009] Furthermore, the incineration device also includes a digital temperature control panel, which is electrically connected to the heating box to control the heating temperature of the heating box, thereby realizing layered temperature control to solve the problem of inconsistent temperature requirements during pyrolysis.

[0010] Furthermore, a temperature sensor is provided at the outlet of the incineration chamber, and the temperature sensor is electrically connected to the digital temperature control panel.

[0011] Furthermore, an air pressure control valve is provided at the outlet of the incineration chamber. The internal volume of the combustion material bin remains unchanged, the temperature rises, and the pressure will gradually increase. When it increases to a threshold value, the pipeline gas pressure reducing valve will automatically open to allow the gas generated by the combustion to be slowly discharged, thereby preventing the tar generated in the gas from accumulating and clogging the pipeline and the combustion material bin.

[0012] Furthermore, the condensation device is respectively provided with a condensation inlet, a condensation outlet, a water injection port and a water outlet; the condensation inlet is connected to the incineration chamber outlet, and the condensation outlet is connected to the collection device.

[0013] Furthermore, the collecting device includes a stratification device and a filtering device, the stratification device is connected to the condensation outlet of the condensation device; the stratification device is connected to the filtering device through a drainage pipe, and an activated carbon layer is also provided on the top of the filtering device. The flue gas and tar are discharged and then slowly cooled through the condenser to produce wood vinegar. Since the density of the gas-liquid-oil mixed tar is greater than that of the wood vinegar, the wood vinegar must be statically stratified by the wood vinegar and tar, and the wood vinegar must be led to the filtering and collecting device below through the drainage pipe, and the residual tar is absorbed by the activated carbon again to collect the wood vinegar, so as to fully utilize the flue gas.

[0014] Through the above technical solution, compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides an integrated muffle furnace, which effectively solves the shortcomings of muffle furnaces on the market, such as failure to achieve full combustion, smoke collection, inconvenient material loading and unloading, and blockage of smoke exhaust pipes; and has a reasonable design, compact structure, and stable performance, which can reduce the waste of manpower and material resources, effectively increase the use efficiency of the muffle furnace, and effectively extend the service life of the muffle furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the muffle furnace of the utility model;

[0017] Figure 2 This is a cross-sectional view of the overall structure of the muffle furnace of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the condensing device and the collecting device of the utility model;

[0019] In the figure: 1-stepping motor; 2-shaft connection device; 3-incineration device; 31-digital display temperature control panel; 32-heating box; 33-heating resistance wire; 4-incineration chamber; 5-temperature sensor; 6-air pressure control valve; 7-condensation device; 71-condensation inlet; 72-condensation outlet; 73-water injection port; 74-water outlet; 8-collection device; 81-stratification device; 82-filtration device. DETAILED DESCRIPTION

[0020] The utility model is described in detail below in conjunction with the accompanying drawings.

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] like Figure 1 As shown, an integrated muffle furnace provided in this embodiment includes an incineration device 3, a heating box 32 is provided in the incineration device 3, a stepper motor 1 is installed on one side of the heating box 32, the output end of the stepper motor 1 is connected to a shaft connection device 2, and the other end of the shaft connection device 2 is detachably connected to an incineration chamber 4; the incineration device 3 also includes a digital temperature control panel 31, the digital temperature control panel 31 is electrically connected to the heating box 32, controls the heating temperature of the heating box 32, realizes layered temperature control, and solves the problem of inconsistent temperature requirements during pyrolysis. The incineration chamber 4 is slidably connected to the inside of the heating box 32 through a slide rail pull-out structure; the slide rail pull-out structure includes a guide rail and a pull-out mechanism, and the guide rail is fixedly connected to the incineration chamber; the pull-out mechanism is movably connected to the guide rail through a pull rod, and the outlet of the incineration chamber 4 is connected to a condensing device 7 and a collecting device 8 in sequence to condense and collect the wood vinegar produced after combustion. A temperature sensor 5 is also provided at the outlet of the incineration chamber 4, and the temperature sensor 5 is electrically connected to the digital temperature control panel 31.

[0023] In this embodiment, an air pressure control valve 6 is provided at the outlet of the incineration chamber 4. The internal volume of the combustion material bin remains unchanged, the temperature rises, and the pressure gradually increases. When it increases to a threshold value, the pipeline gas pressure reducing valve will automatically open to allow the gas generated by the combustion to be slowly discharged, thereby preventing the tar generated in the gas from accumulating and clogging the pipeline and the combustion material bin.

[0024] like Figure 2 , 3As shown, in this embodiment, the heating box 32 is provided with a multi-layer heating resistance wire 33, and the internal combustion material is heated evenly by the multi-layer resistance wire. The condensing device 7 is respectively provided with a condensation inlet 71, a condensation outlet 72, a water injection port 73 and a water outlet 74; the condensation inlet 71 is connected to the outlet of the incineration chamber 4, and the condensation outlet 72 is connected to the collecting device 8. The collecting device 8 includes a stratification device 81 and a filtering device 82, and the stratification device 81 is connected to the condensation outlet 72 of the condensing device 7; the stratification device 81 is connected to the filtering device 82 through a drainage pipe, and an activated carbon layer is also provided on the top of the filtering device 82. The flue gas and tar are discharged and then slowly cooled through the condensing pipe to produce wood vinegar. Since the density of the gas-liquid-oil mixed tar is greater than that of the wood vinegar, the wood vinegar must be led to the filtering and collecting device 8 below through the drainage pipe through the wood vinegar and tar static stratification, and the wood vinegar is filtered again by activated carbon to absorb the residual tar and collect the wood vinegar, so as to fully utilize the flue gas.

[0025] The muffle furnace of this embodiment is heated by a multi-layer resistance wire 33 to make the combustion materials inside the incineration chamber 4 burn evenly, and the layered temperature control is realized by a digital temperature control panel 31 to solve the problem of inconsistent temperature requirements during pyrolysis, so as to meet the requirement that the stepper motor 1 drives the incineration chamber 4 to rotate slowly, so that the combustion materials burn fully. The internal volume of the incineration chamber 4 remains unchanged, the temperature rises, and the pressure will gradually increase. When it increases to a threshold value, the pipeline gas control valve 6 will automatically open to slowly discharge the gas produced by the combustion, and prevent the tar produced in the gas from accumulating and clogging the pipeline and the incineration chamber 4. The flue gas and tar are discharged and then slowly cooled through the condenser to produce wood vinegar. Since the density of the gas-liquid-oil mixed tar is greater than that of the wood vinegar, the wood vinegar must be led to the filtering and collecting device below through the drainage pipe by standing and stratifying the wood vinegar and tar, and the wood vinegar is collected by filtering again through activated carbon to absorb the residual tar and realize the full utilization of the flue gas.

[0026] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. An integrated muffle furnace, comprising a combustion device (3), It is characterized in that The incineration device (3) is provided with a heating box (32), a stepping motor (1) is installed on one side of the heating box (32), the output end of the stepping motor (1) is connected to a shaft connection device (2), and the other end of the shaft connection device (2) is detachably connected to an incineration chamber (4); the incineration chamber (4) is slidably connected to the interior of the heating box (32) via a slide rail pull-out structure; the outlet of the incineration chamber (4) is connected in sequence to a condensing device (7) and a collecting device (8) to condense and collect wood vinegar generated after combustion.

2. The integrated muffle furnace according to claim 1, It is characterized in that The slide rail pull-out structure comprises a guide rail and a pull-out mechanism, wherein the guide rail is fixedly connected to the incineration chamber; and the pull-out mechanism is movably connected to the guide rail via a pull rod.

3. The integrated muffle furnace according to claim 1, It is characterized in that The heating box (32) is provided with multiple layers of heating resistance wires (33).

4. The integrated muffle furnace according to claim 1, It is characterized in that The incineration device (3) further comprises a digital temperature control panel (31), wherein the digital temperature control panel (31) is electrically connected to the heating box (32) to control the heating temperature of the heating box (32).

5. The integrated muffle furnace according to claim 4, It is characterized in that The outlet of the incineration chamber (4) is also provided with a temperature sensor (5), and the temperature sensor (5) is electrically connected to a digital display temperature control panel (31).

6. The integrated muffle furnace according to claim 1, It is characterized in that The outlet of the incineration chamber (4) is provided with an air pressure control valve (6).

7. The integrated muffle furnace according to claim 1, It is characterized in that The condensation device (7) is respectively provided with a condensation inlet (71), a condensation outlet (72), a water injection port (73) and a water outlet (74); the condensation inlet (71) is connected to the outlet of the incineration chamber (4), and the condensation outlet (72) is connected to the collection device (8).

8. The integrated muffle furnace according to claim 1, It is characterized in that The collecting device (8) comprises a stratification device (81) and a filtering device (82); the stratification device (81) is connected to the condensation outlet (72) of the condensation device (7); the stratification device (81) and the filtering device (82) are connected via a drainage pipe, and an activated carbon layer is also provided on the top of the filtering device (82).

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