Electric furnace waste gas purification device for shell casting forming

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to an electric furnace waste gas purification device for shell casting forming, which comprises a purification box, a dust removal cavity and a purification cavity are arranged in the purification box, a conversion barrel is rotatably connected in the purification cavity through a rotating shaft, and placing grooves penetrating through the top and bottom sides of the conversion barrel are symmetrically arranged on two sides of the rotating shaft in the conversion barrel. The placement groove is filled with activated adsorption carbon, an upper fixing sleeve is fixedly connected to the top in the purification cavity, and a communicating pipe fixedly communicates between the upper fixing sleeve and the dust removal cavity; according to the utility model, the two groups of placing grooves symmetrically arranged in the conversion cylinder are matched with the conversion cylinder to rotate by 180 degrees, so that the active adsorption carbon is quickly switched, and the waste active adsorption carbon can be synchronously discharged and replaced in the waste gas treatment process, so that the non-stop treatment of the electric furnace during the casting of a shell is realized, and the production efficiency is improved. The production efficiency and the waste gas treatment efficiency during shell casting are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to an electric furnace waste gas purification device for shell casting molding. Background Art

[0002] Casting is a method of pouring liquid metal into a casting cavity that is adapted to the shape of the part, and obtaining a part or blank after it cools and solidifies. Among them, for shell casting molding, the electric furnace used for shell casting will generate a large amount of exhaust gas during the casting process. These exhaust gases contain harmful substances, such as particulate matter, harmful gases, etc. If the exhaust gas is not treated in time, it will pollute the surrounding working environment and cause great harm to the human body.

[0003] At present, the existing common electric furnace waste gas treatment device for shell castings can replace the internal activated adsorption carbon during use, but in the actual replacement process, the inside of the device will be connected to the external environment, so that it is impossible to replace without stopping the machine, and there is a problem of leakage of some untreated waste gas. In addition, the replacement time is easily extended by the slow operation of the workers, thereby reducing the treatment efficiency of the waste gas, making the device less practical;

[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an electric furnace exhaust gas purification device for shell casting molding to solve the above-mentioned technical defects. The utility model utilizes two sets of placement grooves symmetrically arranged in the conversion cylinder, and cooperates with its rotation of 180° to quickly complete the switching of activated adsorption carbon, and in the exhaust gas treatment process, it can simultaneously discharge and replace the waste activated adsorption carbon, thereby realizing the non-stop treatment of the electric furnace during shell casting, so as to improve the production efficiency and exhaust gas treatment efficiency during shell casting.

[0006] This is achieved through the following technical solutions:

[0007] An electric furnace exhaust gas purification device for shell casting molding, comprising a purification box, a dust removal chamber and a purification chamber are provided in the purification box, a conversion cylinder is rotatably connected to the purification chamber via a rotating shaft, the top end of the rotating shaft extends through the outside of the purification box and is fixedly connected to a turning handle, and placement grooves are symmetrically provided on both sides of the rotating shaft in the conversion cylinder and penetrate both sides of the top and bottom of the conversion cylinder, and the placement grooves are filled with activated adsorption carbon;

[0008] An upper fixed sleeve slidably connected to the outer wall of the conversion cylinder is fixedly connected to the top of the purification chamber, and a connecting pipe is fixedly connected between the upper fixed sleeve and the dust removal chamber; a lower fixed sleeve slidably connected to the outer wall of the conversion cylinder is fixedly connected to the bottom of the purification chamber, and the lower fixed sleeve is fixedly connected to an outlet pipe extending to the outside of the purification box, and the outlet pipe is fixedly connected to an ozone generator.

[0009] Preferably, an air inlet connected to the connecting pipe is provided at the top of one side of each placement groove, an air outlet connected to the air outlet pipe is provided at the bottom of one side of each placement groove, and arc-shaped filters are fixedly connected to the air inlet and the air outlet, a bottom plate is installed at the bottom of the placement groove, L-shaped grooves are symmetrically provided on the inner walls on both sides of the placement groove, a card block that engages with the corresponding L-shaped groove is fixedly connected to the outer wall of the bottom plate, and a U-shaped handle is welded to the bottom of the bottom plate.

[0010] Preferably, a feed port connected to the corresponding placement groove is opened through the top side of the purification chamber away from the dust removal chamber, and a cover plate is hinged in the feed port, and a discharge port is opened through the bottom of the purification chamber directly below the feed port.

[0011] Preferably, positioning seats are symmetrically arranged on both sides of the upper fixing sleeve and the lower fixing sleeve, grooves slidably connected to the corresponding positioning seats are opened on the inner side walls of the upper fixing sleeve and the lower fixing sleeve, a spring is fixedly connected between the groove and the positioning seat, and a positioning groove is opened on the outer side wall of the conversion cylinder to engage with the corresponding positioning seat.

[0012] Preferably, an air inlet pipe connected to the dust removal chamber is fixedly connected to the outer wall of the purification box, a water outlet tray is fixedly installed on the top of the dust removal chamber, and a plurality of atomizing nozzles are densely installed on the bottom of the water outlet tray, and the water inlet of the water outlet tray is fixedly connected to a water inlet pipe extending through and to the outside of the purification box.

[0013] Preferably, a plurality of airflow guide blocks are staggered and fixedly connected on the inner walls on both sides of the dust removal chamber, and the plurality of airflow guide blocks are all located between the air inlet pipe and the connecting pipe. A water outlet pipe extending to the outside of the purification box is fixedly connected to the bottom of one side of the dust removal chamber, and the bottom of the dust removal chamber is inclined, and the water outlet pipe is located at the lowest point in the dust removal chamber.

[0014] The beneficial effects of the utility model are as follows:

[0015] (1) The utility model has two groups of placement grooves symmetrically arranged in the conversion cylinder, so that during the waste gas treatment process, the conversion cylinder only needs to be rotated 180 degrees to quickly complete the switching of activated adsorption carbon, and the untreated waste gas will not be leaked during the switching process, thereby preventing pollution to the surrounding environment. In addition, during the waste gas treatment process, the waste activated adsorption carbon can be discharged and replaced simultaneously, thereby realizing the non-stop treatment of the electric furnace during the shell casting, thereby improving the production efficiency of the shell casting and the waste gas treatment efficiency;

[0016] (2) The utility model realizes rapid positioning of the conversion cylinder after rotation by cooperating the positioning seats provided on the upper fixing sleeve and the lower fixing sleeve with the positioning slots on the conversion cylinder. On the one hand, it avoids the overlap between the air inlet and the connecting pipe, and between the air outlet and the air outlet pipe being too small, resulting in slow flow of exhaust gas inside the purification box and affecting the exhaust gas treatment efficiency; on the other hand, it avoids the difficulty in removing the bottom plate from the placement groove, thereby making it impossible to replace the discarded activated adsorption carbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings;

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a front side sectional view of the utility model;

[0020] Figure 3 It is a cutaway stereogram of the purification box of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the conversion cylinder of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the bottom plate of the utility model;

[0023] Figure 6 This utility model Figure 2 A partial enlarged view of point A in the middle.

[0024] Legend:

[0025] 1. Purification box; 11. Dust removal chamber; 12. Purification chamber; 13. Upper fixing sleeve; 14. Connecting pipe; 15. Lower fixing sleeve; 16. Air outlet pipe; 17. Ozone generator; 18. Feed inlet; 19. Cover plate; 110. Feed outlet; 111. Positioning card seat; 112. Spring; 113. Air inlet pipe; 114. Water outlet tray; 115. Atomizing nozzle; 116. Water inlet pipe; 117. Airflow guide block; 118. Water outlet pipe;

[0026] 2. Conversion cylinder; 21. Rotating shaft; 22. Turning handle; 23. Placement slot; 24. Activated adsorption carbon; 25. Air inlet; 26. Air outlet; 27. Curved filter; 28. Bottom plate; 29. ​​L-shaped slot; 210. Block; 211. Positioning slot. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1:

[0029] When replacing the activated adsorption carbon in the existing device, it is impossible to do it without stopping the machine, resulting in low waste gas treatment efficiency. In addition, some untreated waste gas is prone to leakage during the replacement process. The following solutions can be used to solve this problem:

[0030] See also Figure 1 - Figure 6 As shown, in this embodiment, an electric furnace exhaust gas purification device for shell casting molding includes a purification box 1, and a dust removal chamber 11 and a purification chamber 12 are opened in the purification box 1. The dust removal chamber 11 is used to remove large particles of impurities contained in the exhaust gas entering the purification box 1, and the purification chamber 12 is used to adsorb and remove small particles of impurities and toxic substances in the exhaust gas. A conversion cylinder 2 is rotatably connected to the purification chamber 12 through a rotating shaft 21 for placing activated adsorbent carbon 24. The top of the rotating shaft 21 extends through the outside of the purification box 1 and is fixedly connected with a turning handle 22, which is convenient for driving the rotating shaft 21 to rotate, and then driving the conversion cylinder 2 to rotate 180° to complete the replacement of the placement grooves 23 on both sides. The conversion cylinder 2 is symmetrically provided with placement grooves 23 that penetrate through both sides of the top and bottom of the conversion cylinder 2, and the placement grooves 23 penetrate through both sides of the top and bottom of the conversion cylinder 2, so as to quickly fill the activated adsorbent carbon 24 from the top of the conversion cylinder 2 and quickly discharge it from the bottom of the conversion cylinder 2. The placement grooves 23 are filled with activated adsorbent carbon 24;

[0031] The top of the purification chamber 12 is fixedly connected to an upper fixed sleeve 13 that is slidably connected to the outer wall of the conversion cylinder 2, and a connecting pipe 14 is fixedly connected between the upper fixed sleeve 13 and the dust removal chamber 11. The connecting pipe 14 is used to inject the waste gas to be adsorbed into the corresponding placement groove 23, and through the cooperation of the upper fixed sleeve 13, the end of the connecting pipe 14 is temporarily blocked synchronously during the rotation of the conversion cylinder 2, thereby avoiding the problem of leakage of untreated waste gas during the switching of the placement groove 23. The bottom of the purification chamber 12 is fixedly connected to a lower fixed sleeve 15 that is slidably connected to the outer wall of the conversion cylinder 2 , and the lower fixed sleeve 15 is fixedly connected with an outlet pipe 16 extending to the outside of the purification box 1. The outlet pipe 16 is used to discharge the waste gas after adsorption and discharge it into the ozone generator 17. The waste gas is treated for the third time by the ozone generator 17, thereby improving the treatment effect of the waste gas. In addition, through the cooperation of the lower fixed sleeve 15, the conversion cylinder 2 can synchronously realize the temporary blocking of the end of the outlet pipe 16 during the rotation process, thereby avoiding the problem of leakage of waste gas that has not passed through the ozone generator 17 during the switching of the placement slot 23. The outlet pipe 16 is fixedly connected with the ozone generator 17.

[0032] The top of one side of each placement slot 23 is provided with an air inlet 25 connected to the connecting pipe 14, which is used for the connection between the placement slot 23 and the connecting pipe 14, so that the exhaust gas enters the placement slot 23. The bottom of one side of each placement slot 23 is provided with an air outlet 26 connected to the exhaust pipe 16, which is used for the connection between the placement slot 23 and the exhaust pipe 16, so that the exhaust gas treated by adsorption enters the exhaust pipe 16. The air inlet 25 and the exhaust outlet 26 are fixedly connected with an arc filter 27 to prevent the active gas in the placement slot 23 from entering the exhaust pipe 16. The activated adsorption carbon 24 enters the connecting pipe 14 and the air outlet pipe 16, and a bottom plate 28 is installed at the bottom of the placement groove 23 to seal the bottom of the placement groove 23. L-shaped card grooves 29 are symmetrically opened on the inner walls on both sides of the placement groove 23. A card block 210 that engages with the corresponding L-shaped card groove 29 is fixedly connected to the outer wall of the bottom plate 28, and a U-shaped handle is welded at the bottom of the bottom plate 28. Through the cooperation of the card block 210 and the L-shaped card groove 29, the bottom plate 28 can be quickly installed and disassembled, and then the discharge and filling of the activated adsorption carbon 24 can be quickly completed.

[0033] A feed port 18 connected to the corresponding placement slot 23 is provided on the top side of the purification chamber 12 away from the dust removal chamber 11, and a cover plate 19 is hinged in the feed port 18. A discharge port 110 is provided at the bottom of the purification chamber 12 directly below the feed port 18. When one of the placement slots 23 is connected to the connecting pipe 14 and the air outlet pipe 16, the other placement slot 23 is connected to the feed port 18 and the discharge port 110, thereby realizing the discharge and filling of the activated adsorption carbon 24 in one of the placement slots 23, so as to achieve the simultaneous replacement of the discarded activated adsorption carbon 24 during the exhaust gas treatment process.

[0034] The upper and lower fixing sleeves 13 and 15 are symmetrically provided with positioning seats 111 on both sides, and the inner walls of the upper and lower fixing sleeves 13 and 15 are provided with grooves that are slidably connected to the corresponding positioning seats 111, and a spring 112 is fixedly connected between the groove and the positioning seat 111, and the outer wall of the conversion cylinder 2 is provided with a positioning slot 211 that is engaged with the corresponding positioning seat 111. The positioning seat 111 and the spring 112 provided on the upper and lower fixing sleeves 13 and 15 cooperate with the positioning slot 211 on the conversion sleeve 2 to achieve rapid positioning of the conversion sleeve 2 after rotation. On the one hand, it avoids the overlap between the air inlet 25 and the connecting pipe 14, and the air outlet 26 and the air outlet pipe 16 being too small, resulting in slow flow of exhaust gas inside the purification box 1 and affecting the exhaust gas treatment efficiency; on the other hand, it avoids the difficulty in removing the bottom plate 28 from the placement groove 23, thereby making it impossible to replace the discarded activated adsorption carbon 24.

[0035] An air inlet pipe 113 connected to the dust removal chamber 11 is fixedly connected to the outer wall of the purification box 1, a water outlet tray 114 is fixedly installed on the top of the dust removal chamber 11, and a plurality of atomizing nozzles 115 are densely installed on the bottom of the water outlet tray 114, and a water inlet of the water outlet tray 114 is fixedly connected to a water inlet pipe 116 extending through and extending to the outside of the purification box 1, water is injected into the water outlet tray 114 through the water inlet pipe 116, and sprayed from the plurality of atomizing nozzles 115, so as to spray and remove impurities from the exhaust gas passing through the dust removal chamber 11, thereby removing most of the large particles of impurities and avoiding clogging of the arc filter 27 and affecting the exhaust gas flow efficiency.

[0036] A plurality of airflow guide blocks 117 are staggered and fixedly connected on the inner walls on both sides of the dust removal chamber 11, and the plurality of airflow guide blocks 117 are all located between the air inlet pipe 113 and the connecting pipe 14. The airflow guide blocks 117 are arranged to guide the flow direction of the exhaust gas entering the dust removal chamber 11, thereby extending its time in the dust removal chamber 11, and thereby improving the effect of spray impurity removal. A water outlet pipe 118 extending to the outside of the purification box 1 is fixedly connected to the bottom of one side of the dust removal chamber 11, and the bottom of the dust removal chamber 11 is inclined. The water outlet pipe 118 is located at the lowest point in the dust removal chamber 11. The water outlet pipe 118 is used to discharge wastewater containing large particles of impurities, and the inclination of the bottom of the dust removal chamber 11 improves the effect of wastewater discharge.

[0037] The working process and principle of the utility model are as follows:

[0038] During use, the utility model injects the exhaust gas generated by the electric furnace for shell casting into the dust removal chamber 11 through the air inlet pipe 113, and guides its flow direction under the action of multiple airflow guide blocks 117 to extend its time in the dust removal chamber 11, connects the free end of the water inlet pipe 116 with the water outlet of the external water pump, and injects water into the water outlet tray 114 through the external water pump and the water inlet pipe 116, and sprays water from multiple atomizing nozzles 115, sprays and removes impurities from the exhaust gas in the dust removal chamber 11, removes most of the large particles of impurities, and the waste water containing large particles of impurities is discharged through the water outlet pipe 118;

[0039] The waste gas after the spray impurity removal enters the corresponding placement tank 23 through the connecting pipe 14 and the air inlet 25, and is adsorbed by the activated adsorption carbon 24 in the placement tank 23 to remove small particles of impurities and some toxic substances, and then is discharged to the ozone generator 17 through the outlet pipe 16, and the waste gas is treated for the third time by the ozone generator 17 to complete the treatment of the waste gas;

[0040] When the adsorption effect of the activated adsorption carbon 24 in the current placement groove 23 is reduced, the rotating shaft 21 is driven to rotate by the turning handle 22, and then the conversion cylinder 2 is driven to rotate 180° to complete the replacement of the placement grooves 23 on both sides, and with the cooperation of the positioning card slot 211 and the positioning card seat 111, the positioning after rotation is completed, and then the switching of the internal activated adsorption carbon 24 is completed. When replacing the discarded activated adsorption carbon 24, the U-shaped handle is operated to drive the bottom plate 28 to rotate so that it is taken out from the corresponding placement groove 23, and the discarded activated adsorption carbon 24 is discharged under its own gravity. After that, the bottom plate 28 is reset and installed, and the cover plate 19 in the feed port 18 is opened, new activated adsorption carbon 24 is injected into the placement groove 23, and the cover plate 19 is closed again.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric furnace exhaust gas purification device for shell casting molding, comprising a purification box (1), characterized in that: The purification box (1) is provided with a dust removal chamber (11) and a purification chamber (12); a conversion cylinder (2) is rotatably connected to the purification chamber (12) via a rotating shaft (21); the top end of the rotating shaft (21) extends through the outside of the purification box (1) and is fixedly connected to a turning handle (22); placement grooves (23) are symmetrically provided on both sides of the rotating shaft (21) and penetrate through both sides of the top and bottom of the conversion cylinder (2); the placement grooves (23) are filled with activated adsorption carbon (24); An upper fixed sleeve (13) slidably connected to the outer wall of the conversion cylinder (2) is fixedly connected to the top of the purification chamber (12), and a connecting pipe (14) is fixedly connected between the upper fixed sleeve (13) and the dust removal chamber (11). A lower fixed sleeve (15) slidably connected to the outer wall of the conversion cylinder (2) is fixedly connected to the bottom of the purification chamber (12), and an air outlet pipe (16) extending to the outside of the purification box (1) is fixedly connected to the lower fixed sleeve (15), and an ozone generator (17) is fixedly connected to the air outlet pipe (16).

2. The electric furnace exhaust gas purification device for shell casting molding according to claim 1 is characterized in that: An air inlet (25) connected to the connecting pipe (14) is provided at the top of one side of each placement groove (23), an air outlet (26) connected to the air outlet pipe (16) is provided at the bottom of one side of each placement groove (23), and an arc filter (27) is fixedly connected inside the air inlet (25) and the air outlet (26), a bottom plate (28) is installed at the bottom of the placement groove (23), L-shaped slots (29) are symmetrically provided on the inner walls of both sides of the placement groove (23), a block (210) that engages with the corresponding L-shaped slot (29) is fixedly connected to the outer wall of the bottom plate (28), and a U-shaped handle is welded to the bottom of the bottom plate (28).

3. The electric furnace exhaust gas purification device for shell casting molding according to claim 2 is characterized in that: A feed port (18) communicating with a corresponding placement groove (23) is provided through the top of the purification chamber (12) on a side away from the dust removal chamber (11), and a cover plate (19) is hingedly connected inside the feed port (18). A discharge port (110) is provided through the bottom of the purification chamber (12) directly below the feed port (18).

4. The electric furnace exhaust gas purification device for shell casting molding according to claim 1 is characterized in that: Positioning seats (111) are symmetrically arranged on both sides of the upper fixing sleeve (13) and the lower fixing sleeve (15); grooves slidably connected to the corresponding positioning seats (111) are provided on the inner side walls of the upper fixing sleeve (13) and the lower fixing sleeve (15); a spring (112) is fixedly connected between the groove and the positioning seats (111); and a positioning slot (211) engaged with the corresponding positioning seats (111) is provided on the outer side wall of the conversion cylinder (2).

5. The electric furnace exhaust gas purification device for shell casting molding according to claim 1 is characterized in that: An air inlet pipe (113) in communication with the dust removal chamber (11) is fixedly connected to the outer wall of the purification box (1), a water outlet tray (114) is fixedly installed on the top of the dust removal chamber (11), and a plurality of atomizing nozzles (115) are densely installed on the bottom of the water outlet tray (114), and a water inlet of the water outlet tray (114) is fixedly connected to a water inlet pipe (116) extending through and to the outside of the purification box (1).

6. The electric furnace exhaust gas purification device for shell casting molding according to claim 5 is characterized in that: A plurality of airflow guide blocks (117) are staggered and fixedly connected to the inner walls on both sides of the dust removal chamber (11), and the plurality of airflow guide blocks (117) are all located between the air inlet pipe (113) and the connecting pipe (14); a water outlet pipe (118) extending to the outside of the purification box (1) is fixedly connected to the bottom of one side of the dust removal chamber (11), and the bottom of the dust removal chamber (11) is arranged to be inclined, and the water outlet pipe (118) is located at the lowest point in the dust removal chamber (11).

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