Vermicular graphite cast iron furnace frame of tamping coke oven and preparation method of vermicular graphite cast iron furnace frame

Abstract

The invention relates to the technical field of cast iron furnace frame production, in particular to a tamping coke oven vermicular graphite cast iron furnace frame and a preparation method thereof. Comprising an outer cylinder; the outer wall of the casting cylinder is fixedly connected with the inner wall of the outer cylinder; the outer wall of the casting table is fixedly connected with the inner wall of the outer cylinder; through the synergistic effect of the adjusting device and the cooling device, the cooling speed of the furnace frame is increased. After casting is completed, the adjusting device enables the sliding ring not to block the circulation groove any more, air circulation is achieved, and heat dissipation is accelerated. Meanwhile, a water pump in the cooling device conveys water in a water storage tank to a spiral water pipe, water flow in the spiral water pipe flows to take away the temperature in the casting barrel, the cooling efficiency is further improved, the water circulation system continuously circulates the water flow through the water pump, and refrigeration equipment in the water storage tank is used for cooling the water; and the cooling effect on the furnace frame is continuously kept, the cooling time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cast iron furnace frame production, and in particular to a vermicular graphite cast iron furnace frame for a ramming coke oven and a preparation method thereof. Background Art

[0002] In the production process of ramming coke oven, the furnace frame is a key component, and its quality and performance directly affect the production efficiency and product quality of the coke oven. The traditional furnace frame casting method has many problems in practical application, which becomes the background starting point of the present invention.

[0003] Traditional casting methods often fail to effectively avoid pores and inclusions in castings, resulting in unstable furnace frame quality. When casting in a non-vacuum environment, air can easily enter the molten iron, increasing the probability of pores. At the same time, impurities can easily mix in, affecting the purity of the casting. Moreover, traditional casting usually requires a higher pouring temperature, which not only increases energy consumption, but also generates a large amount of waste gas, causing great pressure on the environment. If the waste gas generated during the casting process is not effectively treated, it will be directly discharged into the atmosphere, causing serious environmental pollution. Traditional waste gas treatment methods may not be effective and cannot fully filter and purify harmful substances in the waste gas. In addition, the cooling speed of the traditional furnace frame after casting is slow, affecting production efficiency. The lack of effective cooling devices and methods makes the cooling time too long, extending the entire production cycle.

[0004] In summary, in order to solve the problems of unstable quality, high energy consumption, serious exhaust gas pollution and low cooling efficiency existing in the traditional ramming coke oven frame casting method, a ramming coke oven vermicular graphite cast iron frame and a preparation method thereof are provided. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention adopts the following technical solution to solve the technical problems: a ramming coke oven vermicular cast iron furnace frame, comprising: an outer cylinder; a casting cylinder, the outer wall of the casting cylinder is fixedly connected to the inner wall of the outer cylinder; a casting table, the outer wall of the casting table is fixedly connected to the inner wall of the outer cylinder; an adjusting device, the adjusting device is arranged at the top of the outer cylinder; a cooling device, the outer wall of the cooling device is fixedly connected to the outer wall of the outer cylinder; an exhaust device, the outer wall of the exhaust device is fixedly connected to the inner wall of the outer cylinder; the adjusting device comprises a telescopic rod, the output end of the telescopic rod is fixedly connected to a connecting frame, the bottom end of the connecting frame is fixedly connected to a connecting rod, the outer wall of the connecting rod is symmetrically fixedly connected to a sliding ring, and the outer wall of the sliding ring is symmetrically fixedly connected to a rubber ring.

[0006] The present invention is further configured such that the outer wall of the telescopic rod is fixedly connected to the outer wall of the outer tube, the outer wall of the connecting frame is slidably connected to the inner wall of the outer tube, the outer wall of the sliding ring is slidably connected to the inner wall of the outer tube, the inner wall of the sliding ring is slidably connected to the outer wall of the casting tube, and the outer wall of the rubber ring is slidably connected to the inner wall of the outer tube and the outer wall of the casting tube. Circulation grooves are provided in the walls of the casting tube and the outer tube, a vacuum pump is fixedly connected to the outer wall of the outer tube, and the output end of the vacuum pump is arranged inside the casting tube. Starting the telescopic rod drives the connecting frame to slide on the outer tube, and drives the fixedly connected connecting rod to move, so that the sliding ring connected thereto moves, and no longer blocks the circulation grooves on the outer tube and the casting tube, allowing air to circulate and accelerating heat dissipation.

[0007] The present invention is further configured such that the cooling device includes a water storage tank, the outer wall of the water storage tank is fixedly connected to a delivery pipe, the outer wall of the water storage tank is fixedly connected to a water pump, and one end of the delivery pipe away from the water storage tank is fixedly connected to a spiral water pipe. The outer wall of the water storage tank is fixedly connected to the outer wall of the outer cylinder, the outer wall of the delivery pipe is fixedly connected to the inner wall of the outer cylinder, and the spiral water pipe is arranged inside the casting cylinder. The water pump delivers water in the water storage tank to the spiral water pipe through the delivery pipe, and the water in the spiral water pipe flows in the casting cylinder, and the temperature inside the casting cylinder is taken away by the flow of water, thereby further accelerating the cooling of the vermicular graphite cast iron furnace frame in the mold on the casting table.

[0008] The present invention is further configured such that the exhaust device includes an air intake pipe, the top end of the air intake pipe is fixedly connected to a purification pipe, the top end of the purification pipe is fixedly connected to a material storage box, the outer wall of the material storage box is fixedly connected to an air supply pipe, and the end of the air supply pipe away from the material storage box is fixedly connected to an air extraction device. The outer wall of the air intake pipe is fixedly connected to the inner wall of the outer tube, the outer wall of the air extraction device is fixedly connected to the outer wall of the outer tube, a plug is provided inside the air intake pipe, the bottom end of the plug is fixedly connected to a fixing rod, the bottom end of the fixing rod is fixedly connected to a pulling spring, the top end of the pulling spring is fixedly connected to the bottom end of the air intake pipe, and the outer wall of the plug is slidably connected to the inner wall of the air intake pipe. When there is a vacuum inside the outer cylinder, the plug moves downward under the pressure, so that it fits against the inner wall of the intake pipe. The sealing ring arranged on the inner wall of the intake pipe fits against the groove on the plug, thereby maintaining the sealing of the entire device and preventing air from entering the intake pipe. When there is no vacuum pressure and the action of the pulling spring, the fixing rod drives the plug to move upward, so that it no longer blocks the intake pipe, allowing air to enter the intake pipe until it enters the purification pipe, where the gas is preliminarily filtered through the filter, and then enters the storage box where impurities are further adsorbed by the activated carbon inside.

[0009] The present invention is further configured such that the inner wall of the purification tube is fixedly connected with a guide ring, the top of the guide ring is provided with a protrusion, the outer wall of the protrusion is fixedly connected with the inner wall of the purification tube, the inner wall of the purification tube is rotatably connected with an impeller, the top of the impeller is fixedly connected with a scraper, the inner wall of the purification tube is fixedly connected with a filter, and the outer wall of the scraper is slidably connected with the outer wall of the filter. During the air flow, the impeller is driven to rotate and the scraper is driven to rotate, so that the impurities outside the filter are scraped off, so that the impurities fall onto the protrusion below and fall into the guide ring under the action of the guide. A cover is provided on the outside of the purification tube, and the cover can be opened to clean the impurities in the guide ring.

[0010] A method for preparing a compacted coke oven vermicular cast iron furnace frame comprises the following steps:

[0011] Step 1: Mold installation: Open the door of the outer cylinder and install the casting mold of the vermicular cast iron furnace frame into the casting table inside the casting cylinder;

[0012] Step 2, vacuum casting: pour the molten iron into the casting mold installed on the casting table in step 1, and start the vacuum pump to make the inside of the outer cylinder into a vacuum. After the pouring is completed, cool and solidify it in a vacuum environment to obtain a precast iron part;

[0013] Step 3, cooling treatment: the sliding ring is driven to move by the adjusting device so that the sliding ring no longer blocks the flow slots on the outer tube and the casting tube to allow air to circulate, and the spiral water pipe drives the water flow to move through the cooling device to accelerate the cooling of the vermicular graphite cast iron furnace frame in the mold on the casting table;

[0014] Step 4: Environmental protection treatment: The exhaust gas generated during the casting process is purified and discharged through the exhaust device. At this time, the mold can be opened from the casting table and the vermicular graphite cast iron furnace frame is ready.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The present invention reduces pores and inclusions in the casting by setting up vacuum casting, and significantly improves the quality of the vermicular cast iron furnace frame of the ramming coke oven. Casting in a vacuum environment can prevent air from entering the molten iron, thereby reducing the generation of pores, and can also prevent impurities from mixing in, making the casting purer, lowering the pouring temperature, and reducing energy consumption and exhaust emissions. Vacuum casting can be cast at a relatively low temperature, which not only reduces energy demand, but also helps to reduce the exhaust gas generated during the casting process, and is more environmentally friendly.

[0017] 2. The present invention can effectively purify and discharge the waste gas generated during the casting process by providing an exhaust device. The waste gas enters the purification pipe through the air inlet pipe, is initially filtered through the filter screen, and then further adsorbs impurities using activated carbon in the storage box, and finally is discharged through the air delivery pipe. In this process, the air flow drives the impeller to rotate, so that the scraper scrapes off the impurities outside the filter screen, ensuring the filtering effect of the filter screen, and at the same time, it is easy to clean up the impurities and reduce pollution to the environment.

[0018] 3. The present invention accelerates the cooling speed of the furnace frame by setting the adjustment device and the cooling device to work together. After the casting is completed, the adjustment device makes the sliding ring no longer block the circulation slot, allowing air to circulate and accelerate the heat dissipation. At the same time, the water pump in the cooling device transports the water in the water storage tank to the spiral water pipe. The water flow in the spiral water pipe takes away the temperature inside the casting tube, further improving the cooling efficiency. The water circulation system continuously circulates the water flow through the water pump, and uses the refrigeration equipment in the water storage tank to cool the water, continuously maintaining the cooling effect on the furnace frame, shortening the cooling time, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the present invention;

[0020] Figure 2 is a cross-sectional view of the present invention;

[0021] Figure 3 is a cross-sectional view of the outer cylinder of the present invention;

[0022] Figure 4 is a cross-sectional view of a casting tube of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the regulating device of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the air extraction device of the present invention;

[0025] Figure 7 is a cross-sectional view of the air extraction device of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the scraper of the present invention.

[0027] In the figure: 1. outer cylinder; 2. cooling device; 21. water storage tank; 22. water pump; 23. delivery pipe; 24. spiral water pipe; 3. exhaust device; 31. suction device; 32. air delivery pipe; 33. storage box; 34. purification pipe; 35. air inlet pipe; 36. plug; 37. fixing rod; 38. pulling spring; 39. filter; 310. bump; 311. guide ring; 312. impeller; 313. scraper; 4. adjustment device; 41. telescopic rod; 42. connecting frame; 43. connecting rod; 44. sliding ring; 45. rubber ring; 5. vacuum pump; 6. casting table; 7. casting cylinder; 8. circulation groove. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0029] Example:

[0030] See also Figure 1 - Figure 8 The present invention provides a technical solution: a ramming coke oven vermicular cast iron furnace frame, comprising: an outer tube 1; a casting tube 7, the outer wall of the casting tube 7 is fixedly connected to the inner wall of the outer tube 1; a casting table 6, the outer wall of the casting table 6 is fixedly connected to the inner wall of the outer tube 1; an adjusting device 4, the adjusting device 4 is arranged at the top of the outer tube 1; a cooling device 2, the outer wall of the cooling device 2 is fixedly connected to the outer wall of the outer tube 1; an exhaust device 3, the outer wall of the exhaust device 3 is fixedly connected to the inner wall of the outer tube 1; the adjusting device 4 comprises a telescopic rod 41, the output end of the telescopic rod 41 is fixedly connected to a connecting frame 42, the bottom end of the connecting frame 42 is fixedly connected to a connecting rod 43, the outer wall of the connecting rod 43 is symmetrically fixedly connected to a sliding ring 44, and the outer wall of the sliding ring 44 is symmetrically fixedly connected to a rubber ring 45.

[0031] The outer wall of the telescopic rod 41 is fixedly connected to the outer wall of the outer tube 1, the outer wall of the connecting frame 42 is slidably connected to the inner wall of the outer tube 1, the outer wall of the sliding ring 44 is slidably connected to the inner wall of the outer tube 1, the inner wall of the sliding ring 44 is slidably connected to the outer wall of the casting tube 7, and the outer wall of the rubber ring 45 is slidably connected to the inner wall of the outer tube 1 and the outer wall of the casting tube 7. The telescopic rod 41 drives the fixedly connected connecting frame 42 to move, so that the connecting frame 42 drives the fixedly connected connecting rod 43 to move, and drags the sliding ring 44 to move until the flow grooves 8 opened on the outer tube 1 and the casting tube 7 are blocked, so that the interior of the outer tube 1 becomes sealed.

[0032] Flow grooves 8 are provided in the walls of the casting tube 7 and the outer tube 1 . A vacuum pump 5 is fixedly connected to the outer wall of the outer tube 1 , and an output end of the vacuum pump 5 is arranged inside the casting tube 7 .

[0033] The cooling device 2 includes a water tank 21, a delivery pipe 23 is fixedly connected to the outer wall of the water tank 21, a water pump 22 is fixedly connected to the outer wall of the water tank 21, and a spiral water pipe 24 is fixedly connected to one end of the delivery pipe 23 away from the water tank 21. The outer wall of the water tank 21 is fixedly connected to the outer wall of the outer tube 1, the outer wall of the delivery pipe 23 is fixedly connected to the inner wall of the outer tube 1, and the spiral water pipe 24 is arranged inside the casting tube 7. The water pump 22 delivers water in the water tank 21 to the spiral water pipe 24 through the fixedly connected delivery pipe 23, and the water in the spiral water pipe 24 flows in the casting tube 7, and the temperature inside the casting tube 7 is taken away by the flow of water, thereby further accelerating the cooling of the vermicular graphite cast iron furnace frame in the mold on the casting table 6.

[0034] The exhaust device 3 includes an air intake pipe 35, the top of the air intake pipe 35 is fixedly connected to a purification pipe 34, the top of the purification pipe 34 is fixedly connected to a storage box 33, the outer wall of the storage box 33 is fixedly connected to an air supply pipe 32, and the end of the air supply pipe 32 away from the storage box 33 is fixedly connected to an exhaust device 31.

[0035] The outer wall of the air intake pipe 35 is fixedly connected to the inner wall of the outer tube 1, the outer wall of the air extraction device 31 is fixedly connected to the outer wall of the outer tube 1, a block 36 is arranged inside the air intake pipe 35, the bottom end of the block 36 is fixedly connected to a fixing rod 37, the bottom end of the fixing rod 37 is fixedly connected to a pulling spring 38, the top end of the pulling spring 38 is fixedly connected to the bottom end of the air intake pipe 35, and the outer wall of the block 36 is slidably connected to the inner wall of the air intake pipe 35.

[0036] The inner wall of the purification tube 34 is fixedly connected with a guide ring 311, the top of the guide ring 311 is provided with a protrusion 310, the outer wall of the protrusion 310 is fixedly connected with the inner wall of the purification tube 34, the inner wall of the purification tube 34 is rotatably connected with an impeller 312, the top of the impeller 312 is fixedly connected with a scraper 313, the inner wall of the purification tube 34 is fixedly connected with a filter 39, and the outer wall of the scraper 313 is slidably connected with the outer wall of the filter 39. During the air flow, the impeller 312 is driven to rotate, so that the scraper 313 that is fixedly connected is driven to rotate, slide outside the filter 39, scrape off the impurities outside the filter 39, and fall into the guide ring 311 under the guidance of the protrusion 310.

[0037] A method for preparing a compacted coke oven vermicular cast iron furnace frame comprises the following steps:

[0038] Step 1: mold installation: open the door of the outer cylinder 1, and install the casting mold of the vermicular cast iron furnace frame into the casting table 6 inside the casting cylinder 7;

[0039] Step 2, vacuum casting: pour the molten iron into the casting mold installed on the casting table 6 in step 1, and start the vacuum pump 5 to make the inside of the outer tube 1 into a vacuum. After the pouring is completed, it is cooled and solidified in a vacuum environment to obtain a precast iron part;

[0040] Step 3, cooling treatment: the sliding ring 44 is driven to move by the adjusting device 4, so that the sliding ring 44 no longer blocks the flow slots 8 on the outer tube 1 and the casting tube 7 to allow air to circulate, and the spiral water pipe 24 drives the water flow to move through the cooling device 2 to accelerate the cooling of the vermicular graphite cast iron furnace frame in the mold on the casting table 6;

[0041] Step 4: Environmental protection treatment: The exhaust gas generated during the casting process is purified and discharged through the exhaust device 3. At this time, the mold can be opened from the casting table 6, and the vermicular graphite cast iron furnace frame is prepared.

[0042] Working principle:

[0043] When in use, during the casting process, the casting mold is installed on the casting table 6 inside the casting tube 7, and then the molten iron is poured into the casting mold through the pouring device. At this time, the adjusting device 4 is used to start the telescopic rod 41 to drive the connecting frame 42 to move, so that the connecting frame 42 drives the connecting rod 43 to move, and drags the sliding ring 44 to move until the flow groove 8 provided on the outer tube 1 and the casting tube 7 is blocked, so that the inside of the outer tube 1 becomes sealed, and the sealing of the whole device is ensured by the action of the rubber ring 45, and at the same time, the vacuum pump 5 is started to make the inside of the outer tube 1 a vacuum environment. Casting in a vacuum environment can reduce pores and inclusions in the casting and improve the quality of the casting; at the same time, vacuum casting can reduce the pouring temperature, reduce energy consumption and exhaust gas emissions;

[0044] When the casting is completed, the vacuum pump 5 is turned off so that the vacuum is no longer maintained inside the outer tube 1, and the external air extraction device 31 is started again. Under the pressure of no vacuum and the action of the pulling spring 38, the fixing rod 37 drives the plug 36 to move upward so that it no longer blocks the air inlet pipe 35, allowing air to enter the air inlet pipe 35 until it enters the purification pipe 34, and passes through the guide ring 311 and the protrusion 310, and the gas is initially filtered by the filter 39. When entering the storage box 33, the impurities are further adsorbed by the internal activated carbon, and the gas is discharged through the air delivery pipe 32 and discharged outward from the air extraction device 31. During the air flow, the impeller 312 is driven to rotate, so that the scraper 313 is driven to rotate, slides outside the filter 39, and the impurities outside the filter 39 are scraped off, so that the impurities fall onto the protrusion 310 below, and fall into the guide ring 311 under the action of the guide. The impurities in the guide ring 311 can be cleaned by opening the external cover of the purification pipe 34.

[0045] When the casting is completed, the telescopic rod 41 is started again through the adjusting device 4 to drive the connecting frame 42 and the connecting rod 43 to move, so that the sliding ring 44 moves and no longer blocks the flow grooves 8 on the outer tube 1 and the casting tube 7, allowing air to circulate and accelerate heat dissipation. At the same time, the water pump 22 in the cooling device 2 is started to transport the water in the water tank 21 to the spiral water pipe 24 through the delivery pipe 23. The water in the spiral water pipe 24 flows in the casting tube 7, and the temperature inside the casting tube 7 is taken away by the flow of water, further accelerating the cooling of the vermicular graphite cast iron furnace frame in the mold on the casting table 6. Under the action of the water pump 22, the water flows into the water tank 21 again, and is cooled again through the internal refrigeration equipment, thereby continuing the water circulation to maintain the cooling of the vermicular graphite cast iron furnace frame in the mold on the casting table 6.

[0046] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A compacted coke oven vermicular cast iron furnace frame, characterized in that: include: outer cylinder(1); A casting cylinder (7), the outer wall of the casting cylinder (7) being fixedly connected to the inner wall of the outer cylinder (1); A casting table (6), the outer wall of the casting table (6) being fixedly connected to the inner wall of the outer cylinder (1); An adjusting device (4), wherein the adjusting device (4) is arranged at the top end of the outer cylinder (1); A cooling device (2), wherein the outer wall of the cooling device (2) is fixedly connected to the outer wall of the outer cylinder (1); An exhaust device (3), the outer wall of the exhaust device (3) being fixedly connected to the inner wall of the outer cylinder (1); The adjusting device (4) comprises a telescopic rod (41), the output end of the telescopic rod (41) is fixedly connected to a connecting frame (42), the bottom end of the connecting frame (42) is fixedly connected to a connecting rod (43), the outer wall of the connecting rod (43) is symmetrically fixedly connected to a sliding ring (44), and the outer wall of the sliding ring (44) is symmetrically fixedly connected to a rubber ring (45).

2. A compacted coke oven vermicular cast iron furnace frame according to claim 1, characterized in that: The outer wall of the telescopic rod (41) is fixedly connected to the outer wall of the outer cylinder (1), the outer wall of the connecting frame (42) is slidably connected to the inner wall of the outer cylinder (1), the outer wall of the sliding ring (44) is slidably connected to the inner wall of the outer cylinder (1), the inner wall of the sliding ring (44) is slidably connected to the outer wall of the casting cylinder (7), and the outer wall of the rubber ring (45) is slidably connected to the inner wall of the outer cylinder (1) and the outer wall of the casting cylinder (7).

3. A compacted coke oven vermicular cast iron furnace frame according to claim 2, characterized in that: The walls of the casting tube (7) and the outer tube (1) are both provided with circulation grooves (8), the outer wall of the outer tube (1) is fixedly connected to a vacuum pump (5), and the output end of the vacuum pump (5) is arranged inside the casting tube (7).

4. A compacted coke oven vermicular cast iron furnace frame according to claim 1, characterized in that: The cooling device (2) comprises a water tank (21), the outer wall of the water tank (21) is fixedly connected to a delivery pipe (23), the outer wall of the water tank (21) is fixedly connected to a water pump (22), and one end of the delivery pipe (23) away from the water tank (21) is fixedly connected to a spiral water pipe (24).

5. A compacted coke oven vermicular cast iron furnace frame according to claim 4, characterized in that: The outer wall of the water storage tank (21) is fixedly connected to the outer wall of the outer cylinder (1), the outer wall of the delivery pipe (23) is fixedly connected to the inner wall of the outer cylinder (1), and the spiral water pipe (24) is arranged inside the casting cylinder (7).

6. A compacted coke oven vermicular cast iron furnace frame according to claim 1, characterized in that: The exhaust device (3) comprises an air intake pipe (35), the top end of the air intake pipe (35) is fixedly connected to a purification pipe (34), the top end of the purification pipe (34) is fixedly connected to a material storage box (33), the outer wall of the material storage box (33) is fixedly connected to an air supply pipe (32), and the end of the air supply pipe (32) away from the material storage box (33) is fixedly connected to an exhaust device (31).

7. A compacted coke oven vermicular cast iron furnace frame according to claim 6, characterized in that: The outer wall of the air intake pipe (35) is fixedly connected to the inner wall of the outer tube (1), the outer wall of the air extraction device (31) is fixedly connected to the outer wall of the outer tube (1), a plug (36) is arranged inside the air intake pipe (35), the bottom end of the plug (36) is fixedly connected to a fixing rod (37), the bottom end of the fixing rod (37) is fixedly connected to a pulling spring (38), the top end of the pulling spring (38) is fixedly connected to the bottom end of the air intake pipe (35), and the outer wall of the plug (36) is slidably connected to the inner wall of the air intake pipe (35).

8. A compacted coke oven vermicular cast iron furnace frame according to claim 6, characterized in that: The inner wall of the purification tube (34) is fixedly connected to a guide ring (311), the top end of the guide ring (311) is provided with a protrusion (310), the outer wall of the protrusion (310) is fixedly connected to the inner wall of the purification tube (34), the inner wall of the purification tube (34) is rotatably connected to an impeller (312), the top end of the impeller (312) is fixedly connected to a scraper (313), the inner wall of the purification tube (34) is fixedly connected to a filter screen (39), and the outer wall of the scraper (313) is slidably connected to the outer wall of the filter screen (39).

9. A method for preparing a compacted coke oven vermicular graphite cast iron furnace frame, used for preparing the compacted coke oven vermicular graphite cast iron furnace frame of claims 1-8, characterized in that: The following steps are involved: Step 1: mold installation: open the door of the outer cylinder (1), and install the casting mold of the vermicular cast iron furnace frame into the casting table (6) inside the casting cylinder (7); Step 2, vacuum casting: pouring molten iron into the casting mold installed on the casting table (6) in step 1, and starting the vacuum pump (5) to make the inside of the outer cylinder (1) become vacuum, and after the casting is completed, cooling and solidifying it in a vacuum environment to obtain a precast iron part; Step 3, cooling treatment: the sliding ring (44) is driven to move by the regulating device (4) so ​​that the sliding ring (44) no longer blocks the flow grooves (8) on the outer tube (1) and the casting tube (7) to allow air to circulate, and the water flow is driven to move by the cooling device (2) and the spiral water pipe (24) to accelerate the cooling of the vermicular graphite cast iron furnace frame in the mold on the casting table (6); Step 4: Environmental protection treatment: The exhaust gas generated during the casting process is purified and discharged through the exhaust device (3). At this time, the mold can be opened from the casting table (6), and the preparation of the vermicular graphite cast iron furnace frame is completed.

Images