Toughened carbon production residual gas recycling device convenient for filtration and backflow

Abstract

The utility model discloses a tempered carbon production residual gas recycling device convenient for filtration and backflow, which comprises a tempered carbon rotary furnace, a straight pipe and an exhaust pipe, the straight pipe is fixed at the top end of the tempered carbon rotary furnace, and the right side of the straight pipe is connected with the exhaust pipe; and the right side of the toughened carbon rotary furnace is connected with a heat exchange box through an exhaust pipe. Residual gas in the tempered carbon rotary furnace is led out through the exhaust pipe and led into the heat conduction pipe, the heat conduction pipe is in an S shape in the heat exchange box, the heat exchange area in the heat exchange box can be enlarged, the heat exchange effect is enhanced, then the driving shaft is driven to rotate through the driving shaft, the stirring main shaft is driven to rotate synchronously through the driving shaft in cooperation with the conveying belt, and the belt wheel assembly is further matched. And the transition shaft and the driven shaft rotate to drive multiple groups of stirring blade plates and stirring blocks to rotate, so that cold water in the heat exchange box can be stirred, and the contact area and speed of the cold water and the heat conduction pipe are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas recycling, in particular to a device for recycling waste gas from tempered carbon production which is convenient for filtering and reflux. Background Art

[0002] In current industrial production, the production of tempered carbon (i.e. activated carbon) is an important link and is widely used in many fields such as air purification, water treatment, and chemical adsorption. However, in the traditional tempered carbon production process, tail gas emissions are often accompanied by a large amount of waste heat and underutilized gases. If these resources are directly discharged into the atmosphere, it will not only cause energy waste but also aggravate environmental pollution. Therefore, it is particularly important to develop a tempered carbon production waste gas recycling device that is easy to filter and reflux.

[0003] Announcement number CN211170444U discloses an energy-saving tempering furnace exhaust device with reusable waste heat, comprising a tempering furnace body, an exhaust pipe fixedly connected to the upper end of the tempering furnace body, and a heat exchange box fixedly connected to the lower end of the exhaust pipe. The right end of the exhaust pipe extends through the heat exchange box to the interior of the heat exchange box, and the right end of the exhaust pipe is fixedly connected to a heat conduction pipe, and the right end of the heat conduction pipe is fixedly connected to an outlet pipe. The upper end of the heat exchange box is fixedly connected to a water inlet pipe, and the left end of the heat exchange box is fixedly connected to a water outlet pipe. The right end of the heat exchange box is fixedly connected to a filter box, and the upper end of the outlet pipe extends through the lower end of the filter box to the interior of the filter box. This energy-saving tempering furnace exhaust device with reusable waste heat reduces resource consumption while increasing overall environmental friendliness. The device increases the overall waste heat utilization rate and reduces overall air pollution, thereby increasing overall practicality.

[0004] When the above-mentioned prior art is in use, the heat exchange process of the heat pipe in the heat exchange box is mainly static heat exchange, that is, the water injected into the heat exchange box is static, and there is a lack of corresponding stirring design, so the heat exchange mainly relies on the flow of hot air, and the heat transfer efficiency is low. In addition, due to the lack of stirring, the temperature distribution of the cold water in the heat exchange box may be uneven. The part close to the heat pipe may increase in temperature due to direct heat conduction, while the part far away from the heat pipe may maintain a lower temperature. This uneven temperature distribution will not only affect the efficiency of heat exchange, but may also cause inconsistent changes in water quality in the heat exchange box, further affecting subsequent use. Therefore, corresponding improvements are needed. Utility Model Content

[0005] The purpose of the utility model is to provide a tempered carbon production waste gas recycling device that is easy to filter and reflux, so as to solve the problem of low heat recovery efficiency of the waste gas in the existing tempered carbon production waste gas recycling device proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tempered carbon production waste gas recycling device that is convenient for filtering and reflux, comprising a tempered carbon rotary kiln, a straight pipe, and an exhaust pipe, wherein the straight pipe is fixed at the top of the tempered carbon rotary kiln, and the right side of the straight pipe is connected to the exhaust pipe;

[0007] Also includes:

[0008] The right side of the tempered carbon rotary kiln is connected to a heat exchange box through an exhaust pipe, one end of the exhaust pipe is connected to a heat conduction pipe, a stirring mechanism is provided inside the heat exchange box, the right side of the heat exchange box is connected to a gas filter box through a heat conduction pipe, and mounting plates are fixed on both sides of the gas filter box, the right side of the gas filter box is connected to an external exhaust pipe, a filter assembly is provided between the mounting plates, the outside of the filter assembly is connected to a connecting plate, and limiting plates are fixed on both ends of the right side of the connecting plate, limiting holes are provided on the limiting plates, and a fixing mechanism is provided on the gas filter box between the limiting plates.

[0009] Preferably, the outer side of the exhaust pipe is sleeved with a thermal insulation sleeve, and the interior of the thermal insulation sleeve is connected with thermal insulation cotton, and one side of the thermal insulation sleeve is connected to the outer wall of the tempered carbon rotary kiln through a support block.

[0010] Preferably, the heat conducting pipe is arranged in an S-shape inside the heat exchange box, and heat conducting aluminum wire is evenly wound around the heat conducting pipe.

[0011] Preferably, the stirring mechanism includes a driving motor, and the driving motor is fixed to one side of the top of the heat exchange box through a support block. The output end of the driving motor is fixed with a driving shaft through a coupling, and a transmission belt is sleeved on the outside of the driving shaft. The top of the inside of the heat exchange box is connected to a stirring main shaft, and a power transmission component is provided on the right side of the stirring main shaft.

[0012] Preferably, the power transmission assembly includes a driven shaft fixed on the outer wall of the heat exchange box below the stirring main shaft, a transition shaft fixed on the heat exchange box on the right side of the stirring main shaft and the driven shaft, and a pulley assembly connected between the stirring main shaft, the transition shaft and the driven shaft;

[0013] Wherein, stirring blades are evenly fixed on the outer sides of the stirring main shaft and the driven shaft, and stirring blocks are evenly fixed on the outer side of the transition shaft.

[0014] Preferably, the pulley assembly includes three pulleys and a transmission belt, the pulleys are respectively sleeved on the stirring main shaft, the transition shaft and the driven shaft, and the transmission belt is connected between the pulleys.

[0015] Preferably, the fixing mechanism includes a telescopic cylinder, and the telescopic cylinder is fixed to the outside of the connecting plate, both sides of the inside of the telescopic cylinder are connected to reset springs, and one end of the reset spring is connected to a pull plate, one side of the pull plate is connected to a plug-in block, and one end of the plug-in block extends to the inside of the limiting hole, and movable grooves are provided at both ends of the right side of the telescopic cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the tempered carbon production waste gas recycling device that is convenient for filtering and reflux can not only fully reuse the waste heat, but also has the effect of filtering the waste gas, ensuring the cleanliness of the re-discharged gas, and achieving the effect of protecting the environment;

[0017] The exhaust pipe guides the waste gas from the tempered carbon rotary kiln into the heat transfer pipe. The heat transfer pipe is S-shaped in the heat exchange box, which helps to expand the heat exchange area in the heat exchange box and enhance the heat exchange effect. Then, the drive shaft is used to rotate, and the transmission belt is used to synchronize the stirring main shaft. The pulley assembly is further used to rotate the transition shaft and the driven shaft, so as to drive the rotation of multiple groups of stirring blades and stirring blocks. This can stir the cold water in the heat exchange box, promote the contact area and speed between the cold water and the heat transfer pipe, further enhance the heat exchange efficiency, and improve the efficiency of waste heat recovery and reuse in the waste gas.

[0018] An insulation sleeve is placed on the exhaust pipe and filled with insulation cotton to insulate the exhaust pipe, thus preventing unnecessary heat loss when the residual gas circulates in the exhaust pipe. A heat-conducting aluminum wire is evenly wound around the heat-conducting pipe. The heat of the residual gas in the heat-conducting pipe can be quickly extracted by utilizing the heat-conducting performance of the heat-conducting aluminum wire, thereby improving the utilization efficiency of the residual heat.

[0019] The heat conduction pipe further introduces the residual gas in the tempering process into the gas filter box, and uses a stainless steel filter to perform preliminary filtration on the residual gas, then uses an odor adsorption plate to adsorb the odor of the discharged residual gas, and then uses a fine filter plate to further filter the residual gas, so as to achieve multi-stage filtration of the residual gas to ensure the cleanliness of the discharged gas. Among them, the outer sides of the stirring main shaft and the driven shaft are evenly fixed with stirring blades, and the outer side of the transition shaft is evenly fixed with stirring blocks. Then the residual gas after heat exchange is further refluxed through the external exhaust pipe, that is, it flows into the outside atmosphere;

[0020] Later, pull the connecting plate and remove it from the gas filter box so that the stainless steel filter, odor adsorption plate, and fine filter plate can be taken out for subsequent cleaning and maintenance to ensure the continuity and efficiency of filtration. Pull the pull plate to make it move in the movable groove on the outside of the telescopic cylinder, and use the pull plate to press the reset spring to compress it until the plug-in block is disengaged from the limit hole to ensure the convenient pulling and withdrawing of the connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the main structure of the gas filter box of the present utility model;

[0024] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of the thermal insulation sleeve of the present invention;

[0025] Figure 4 This is a schematic diagram of the fixing mechanism structure of the utility model;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the power transmission component of the present utility model.

[0027] Explanation of the reference numerals in the figure: 1. Tempered carbon rotary kiln; 2. Straight pipe; 3. Exhaust pipe; 4. Insulation sleeve; 401. Insulation cotton; 5. Heat exchange box; 6. Agitation mechanism; 601. Drive motor; 602. Drive shaft; 603. Transmission belt; 604. Stirring main shaft; 605. Transition shaft; 606. Driven shaft; 607. Pulley assembly; 7. Heat conduction pipe; 8. Heat conduction aluminum wire; 9. Gas filter box; 10. Mounting plate; 11. Stainless steel filter screen; 12. Odor adsorption plate; 13. Fine filter screen; 14. External exhaust pipe; 15. Agitation blade; 16. Connecting plate; 17. Limiting plate; 1701. Limiting hole; 18. Fixing mechanism; 1801. Telescopic cylinder; 1802. Return spring; 1803. Pull plate; 1804. Plug block; 19. Agitation block. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 5 , the utility model provides the following technical solutions: Example

[0030] In order to solve the problem of poor waste heat recovery efficiency in the existing tempered carbon production waste gas recycling device, the following technical solution is announced. For details, please refer to Figure 1 、 Figure 3 、 Figure 5 , a device for recycling waste gas from tempered carbon production that is convenient for filtering and reflowing, includes a tempered carbon rotary furnace 1, a straight pipe 2, and an exhaust pipe 3. A straight pipe 2 is fixed at the top of the tempered carbon rotary furnace 1, and the right side of the straight pipe 2 is connected to the exhaust pipe 3, the outer side of the exhaust pipe 3 is sleeved with a heat insulation sleeve 4, and the interior of the heat insulation sleeve 4 is connected with heat insulation cotton 401, and one side of the heat insulation sleeve 4 is connected to the outer wall of the tempered carbon rotary furnace 1 through a support block, and also includes: the right side of the tempered carbon rotary furnace 1 is connected to a heat exchange box 5 through the exhaust pipe 3, and one end of the exhaust pipe 3 is connected to a heat conduction pipe 7, which is S-shaped inside the heat exchange box 5, and heat-conducting aluminum wire 8 is evenly wound on the heat conduction pipe 7. A stirring mechanism 6 is provided inside the heat exchange box 5, and the stirring mechanism 6 includes a driving motor 601, and the driving motor 601 is fixed to one side of the top of the heat exchange box 5 through a supporting block, and the output end of the driving motor 601 is fixed through a coupling A driving shaft 602 is fixed, and a transmission belt 603 is sleeved on the outer side of the driving shaft 602. The top of the inside of the heat exchange box 5 is connected to the stirring main shaft 604, and a power transmission component is provided on the right side of the stirring main shaft 604. The power transmission component includes a driven shaft 606 fixed on the outer wall of the heat exchange box 5 below the stirring main shaft 604, and a transition shaft 605 is fixed on the heat exchange box 5 on the right side of the stirring main shaft 604 and the driven shaft 606. A pulley assembly 607 is connected between the stirring main shaft 604, the transition shaft 605 and the driven shaft 606. The pulley assembly 607 includes three pulleys and a transmission belt. The pulleys are respectively sleeved on the stirring main shaft 604, the transition shaft 605 and the driven shaft 606, and a transmission belt is connected between the pulleys. Among them, the outer sides of the stirring main shaft 604 and the driven shaft 606 are evenly fixed with stirring blades 15, and the outer side of the transition shaft 605 is evenly fixed with stirring blocks 19;

[0031] When this embodiment is in use, a tempered carbon rotary kiln 1 is used for high-temperature carbonization treatment. During this process, the raw materials are heated at high temperature to generate a large amount of tail gas, which flows from the straight pipe 2 into the exhaust pipe 3 and further flows into the heat pipe 7. The heat pipe 7 is S-shaped in the heat exchange box 5, so that the heat generated by the hot tail gas can be transmitted over a large area in the heat exchange box 5. Then, an appropriate amount of cold water is injected into the heat pipe 7, and the heat in the heat pipe 7 can be used to introduce it into the water to realize the utilization of waste heat. A heat-conducting aluminum wire 8 is wound around the heat pipe 7, that is, The heat can be extracted to achieve rapid heat conduction, and then the driving motor 601 is used to drive the driving shaft 602 to rotate, and the transmission belt 603 can be used to rotate the stirring main shaft 604, and further cooperate with the pulley assembly 607 to make the transition shaft 605 and the driven shaft 606 start to rotate, and then drive multiple groups of stirring blades 15 and stirring blocks 19 to rotate, so as to stir the cold water in the heat exchange box 5, increase the contact rate between the cold water and the heat conduction pipe 7, so as to improve the efficiency of waste heat reuse and make full use of the waste gas in the tempered carbon production process. Example

[0032] This embodiment is different from the first embodiment. By using the filter assembly, the gas filtering effect during the exhaust of the tempered carbon residual gas can be achieved to prevent the direct exhaust of polluted air. Therefore, the following technical solutions are published. Please refer to the detailed Figure 1 、 Figure 2 、 Figure 4 , the right side of the heat exchange box 5 is connected to the gas filter box 9 through the heat conduction pipe 7, and the gas filter box 9 has mounting plates 10 fixed on both sides. The right side of the gas filter box 9 is connected to the outer exhaust pipe 14. A filter assembly is arranged between the mounting plates 10, and the outside of the filter assembly is connected to a connecting plate 16, and both ends of the right side of the connecting plate 16 are fixed with limiting plates 17, and limiting holes 1701 are provided on the limiting plates 17. A fixing mechanism 18 is provided on the gas filter box 9 between the limiting plates 17, and the fixing mechanism 18 includes a telescopic cylinder 1801, and the telescopic cylinder 1801 is fixed to the outside of the connecting plate 16, and both sides of the inside of the telescopic cylinder 1801 are connected with a return spring 1802, and one end of the return spring 1802 is connected to a pull plate 1803, and one side of the pull plate 1803 is connected with a plug-in block 1804, and one end of the plug-in block 1804 extends to the inside of the limiting hole 1701, and both ends of the right side of the telescopic cylinder 1801 are provided with a movable groove;

[0033] When this embodiment is in use, the heat pipe 7 further introduces the residual gas in the tempering carbon process into the gas filter box 9, and uses the stainless steel filter mesh 11 to perform preliminary filtration on the residual gas, and then uses the odor adsorption plate 12 to adsorb the odor of the discharged residual gas, and then uses the fine filter mesh plate 13 to further filter the residual gas, so as to achieve multi-stage filtration of the residual gas to ensure the cleanliness of the discharged gas and avoid polluting the environment. Later, the connecting plate 16 is pulled to remove it from the gas filter box 9 so that the stainless steel filter mesh 11, the odor adsorption plate 12, and the fine filter mesh plate 13 can be removed, and they can be cleaned and maintained later to ensure the continuity and efficiency of the filtration. The pull plate 1803 is pulled to make it move in the movable groove outside the telescopic cylinder 1801, and the pull plate 1803 is used to press the reset spring 1802 to compress it until the plug-in block 1804 is disengaged from the limiting hole 1701 to ensure the convenient pulling and pulling of the connecting plate 16.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A tempered carbon production waste gas recycling device that is convenient for filtering and reflowing, comprising a tempered carbon rotary kiln (1), a straight pipe (2), and an exhaust pipe (3), wherein the straight pipe (2) is fixed to the top of the tempered carbon rotary kiln (1), and the right side of the straight pipe (2) is connected to the exhaust pipe (3); It is characterized by: Also includes: The right side of the tempered carbon rotary kiln (1) is connected to a heat exchange box (5) through an exhaust pipe (3), one end of the exhaust pipe (3) is connected to a heat conduction pipe (7), a stirring mechanism (6) is provided inside the heat exchange box (5), the right side of the heat exchange box (5) is connected to a gas filter box (9) through a heat conduction pipe (7), and mounting plates (10) are fixed on both sides of the gas filter box (9), the right side of the gas filter box (9) is connected to an external exhaust pipe (14), a filter assembly is provided between the mounting plates (10), the outer side of the filter assembly is connected to a connecting plate (16), and both ends of the right side of the connecting plate (16) are fixed with a limiting plate (17), the limiting plates (17) are provided with a limiting hole (1701), and a fixing mechanism (18) is provided on the gas filter box (9) between the limiting plates (17).

2. The device for recycling waste gas from tempered carbon production that is convenient for filtering and reflux according to claim 1, characterized in that: The outer side of the exhaust pipe (3) is sleeved with a heat-insulating sleeve (4), and the interior of the heat-insulating sleeve (4) is connected with heat-insulating cotton (401). One side of the heat-insulating sleeve (4) is connected to the outer wall of the tempered carbon rotary kiln (1) via a support block.

3. The device for recycling waste gas from tempered carbon production that is convenient for filtering and reflux according to claim 1 is characterized in that: The heat conducting pipe (7) is arranged in an S-shape inside the heat exchange box (5), and heat conducting aluminum wire (8) is evenly wound around the heat conducting pipe (7).

4. The device for recycling waste gas from tempered carbon production that is convenient for filtering and reflux according to claim 1 is characterized in that: The stirring mechanism (6) comprises a driving motor (601), and the driving motor (601) is fixed to one side of the top end of the heat exchange box (5) through a support block. The output end of the driving motor (601) is fixed with a driving shaft (602) through a coupling, and a transmission belt (603) is sleeved on the outer side of the driving shaft (602). The top end of the heat exchange box (5) is connected to a stirring main shaft (604), and a power transmission component is provided on the right side of the stirring main shaft (604).

5. The device for recycling waste gas from tempered carbon production that is convenient for filtering and reflux according to claim 4 is characterized in that: The power transmission assembly comprises a driven shaft (606) fixed on the outer wall of the heat exchange box (5) below the stirring main shaft (604), a transition shaft (605) fixed on the heat exchange box (5) on the right side of the stirring main shaft (604) and the driven shaft (606), and a pulley assembly (607) connected between the stirring main shaft (604), the transition shaft (605) and the driven shaft (606); The outer sides of the stirring main shaft (604) and the driven shaft (606) are both evenly fixed with stirring blades (15), and the outer side of the transition shaft (605) is evenly fixed with stirring blocks (19).

6. The device for recycling waste gas from tempered carbon production that is convenient for filtering and reflux according to claim 5, characterized in that: The pulley assembly (607) includes three pulleys and a transmission belt. The pulleys are respectively sleeved on the stirring main shaft (604), the transition shaft (605) and the driven shaft (606), and the transmission belt is connected between the pulleys.

7. The device for recycling waste gas from tempered carbon production that is convenient for filtering and reflux according to claim 1, characterized in that: The fixing mechanism (18) includes a telescopic cylinder (1801), and the telescopic cylinder (1801) is fixed to the outside of the connecting plate (16), both sides of the interior of the telescopic cylinder (1801) are connected to return springs (1802), and one end of the return spring (1802) is connected to a pull plate (1803), one side of the pull plate (1803) is connected to a plug-in block (1804), and one end of the plug-in block (1804) extends to the inside of the limiting hole (1701), and both ends of the right side of the telescopic cylinder (1801) are provided with movable grooves.

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