Full-automatic mold shell roasting system

Abstract

The invention discloses a full-automatic formwork roasting system, relates to the field of roasting furnaces, and solves the problem that harmful gas generated after formwork combustion is not treated in time. The full-automatic formwork roasting system comprises a roasting furnace body and a fuel tank, an automatic feeding and discharging system is installed on one side of the roasting furnace body, the automatic feeding and discharging system conveys formwork feeding and discharging in batches, the automatic feeding and discharging system comprises a material bearing supporting plate, and a one-way flow fresh air system is installed at the top end of the interior of the roasting furnace body. The one-way flow fresh air system exhausts harmful gas, the one-way flow fresh air system comprises a micro-pressure fresh air assembly, the micro-pressure fresh air assembly pumps out the harmful gas in the roasting furnace body, mechanical air draft is conducted through an air extracting pump in the fresh air system, and then air exhausting is conducted through a cooling fan; harmful gas HC I, NH3 and carbonized dust generated in the roasting furnace body in the high-temperature roasting process of the mold shell are pumped out, and the influence on the quality of finished mold shell products and the quality of workshop air is avoided.

Description

Technical Field

[0001] The invention relates to the field of baking furnaces, in particular to a full-automatic shell baking system. Background Art

[0002] The fully automatic shell baking system is an advanced industrial equipment, mainly used for the continuous dewaxing drying and baking heat treatment process of medium and small precision casting models. It can remove moisture and organic matter in the shell, improve its high-temperature strength and ensure the quality of the casting. In addition, the fully automatic shell baking system is highly intelligent and can set the baking temperature and furnace discharge temperature in advance according to the thickness of the shell and the quality of the refractory materials used.

[0003] Comparative Document 1: The existing Chinese patent with publication number CN115751955A discloses a mold shell baking production equipment and process system for continuous casting on the car, which solves the problems that the existing mold shell baking furnace cannot realize casting on the car, the temperature difference in the furnace is large, and the mold shell molten steel overflows and causes the production line to stop operating. It is characterized by: it includes a mold shell baking furnace, an automatic return line, an automatic ferry device for entering and exiting the furnace, a mold shell casting line, a cooling kiln and other equipment, and the mold shell baking furnace adopts a side wall flat flame combustion system; the automatic return line includes a return line track and a transfer chain stepping mechanism; the automatic ferry device includes a ferry track and an automatic ferry car; the mold shell casting line includes a ladle, a casting tank, a sliding line and a casting area platform. The present invention can enable the mold shell baking furnace to realize continuous high-temperature casting, which can not only improve the temperature difference between the upper and lower parts of the baking furnace to ensure uniform atmosphere in the furnace, but also prevent the overflow of high-temperature molten steel during the transfer process from causing the production line to stop operating and repair, and has the advantages of simple structure, high stability, and convenient operation and maintenance, and has a very broad market prospect.

[0004] However, there are still the following defects:

[0005] 1. The mold shell baking furnace does not treat the harmful gases produced after combustion. The mold shell baking furnace will produce a large amount of harmful gases during the high-temperature baking process, such as HCl, NH3, etc. These gases not only seriously endanger the physical and mental health of employees, but also cause corrosion to factory buildings and electromechanical equipment. In addition, these harmful gases contain a large amount of particulate matter and dust, which will further pollute the processing environment on the production line, resulting in shrinkage holes, pores and protrusions on the castings during the subsequent membrane shell calcination.

[0006] 2. In addition, the mold shell needs to be naturally cooled and hardened after burning. Although rapid cooling can speed up the cooling speed and improve production efficiency, the mold shell will have uneven temperature inside and outside the shell, which will lead to cracking. The existing equipment has not optimized the loading and unloading of mold shells for batch production. Although the production line uses an intelligent combustion mold shell processing method, the loading and unloading still uses manual handling of the mold shell raw materials, which cannot keep up with the mold shell discharge speed. The cooling and hardening step of the mold shell after combustion and discharge cannot be ignored. When the mold shell is just out of the furnace after burning, the surface is relatively soft due to the activity of high temperature. The mold shells will stick together after contact, and poor temperature control will lead to cracking and pores. Summary of the invention

[0007] The object of the present invention is to provide a fully automatic shell baking system to solve the problems raised in the above background technology.

[0008] The technical solution of the present invention is: a fully automatic shell baking system, including a baking furnace body and a fuel tank, an automatic loading and unloading system is installed on one side of the baking furnace body, and the automatic loading and unloading system transports the shells to load and unload in batches, the automatic loading and unloading system includes a material presentation tray, and the material presentation tray is installed on one side of the baking furnace body, and the shells are placed on the top of the material presentation tray, a one-way flow fresh air system is installed on the top of the inside of the baking furnace body, and the one-way flow fresh air system includes a cooling fan, and the cooling fan exhausts harmful gases, the one-way flow fresh air system includes a micro-pressure fresh air component, and the micro-pressure fresh air component extracts harmful gases in the baking furnace body,

[0009] Wherein, the micro-pressure fresh air component includes:

[0010] The first motor is installed on the top of the roasting furnace body, away from the one-way fresh air system, and the first motor drives the movable pressure plate to approach the mold shell through power. Vacuum pumps are installed on both sides of the movable pressure plate, and the vacuum pumps extract harmful gases generated when the mold shell is burned.

[0011] Furthermore, the automatic loading and unloading system also includes a protective side net, and extension handles are installed on both sides of the protective side net, and a movable pulley is installed at the bottom end of the protective side net.

[0012] Wherein, the protective side nets are provided with two groups, and the two groups of protective side nets are connected by brackets and auxiliary rollers at the bottom to form a trolley.

[0013] Furthermore, the automatic loading and unloading system also includes fixed rails, and the fixed rails are provided with two symmetrical groups, and a turning rail is installed between the two groups of fixed rails, and the movable pulley moves in the track composed of the fixed rails.

[0014] Wherein, auxiliary rollers are installed on both sides of the bottom bracket of the protective side net, and the fixed angle piece is in contact with the top of the fixed rail.

[0015] Wherein, a telescopic rod is installed at the bottom end of one side of the cart composed of the protective side net.

[0016] Furthermore, support side panels are installed inside both sides of the protective side net, and there are three groups of support side panels, which are installed at equal intervals from the top to the bottom.

[0017] The material presentation support plate is installed at the top of the supporting side plate, and multiple sets of preset holes are passed through the two sides of the material presentation support plate. A fixed plug-in is installed on the top of one end of the material presentation support plate, and a reinforcing plug-in is passed through the side of the fixed plug-in close to the material presentation support plate. The reinforcing plug-in passes through the fixed plug-in, the material presentation support plate and the supporting side plate, and

[0018] A fixed angle piece is installed at the bottom of one end of the material supporting plate.

[0019] Furthermore, a plurality of sets of deviation correction positioning blocks are fixed on the side of the supporting side plate close to the protective side net, wherein a plurality of sets of semi-embedded rollers are installed on the side of the supporting side plate away from the protective side net, and

[0020] A middle support plate is provided at the middle position of the bottom of the material presenting support plate, and a first embedded roller is inlaid at one end of the middle support plate close to the material presenting support plate.

[0021] Furthermore, a U-shaped stationary plate is installed at the middle position of the roasting furnace body, and a calcining zone support plate is installed on one side of the U-shaped stationary plate close to the micro-pressure fresh air component.

[0022] Among them, the tops of the calcination zone support plate and the U-shaped stationary plate are both inlaid with second embedded rollers, and the second embedded rollers are provided in multiple groups and distributed at equal intervals, and the rolling direction of the second embedded rollers is the same as the moving direction of the material support plate.

[0023] Furthermore, the first motors are provided with two groups, and the two groups of first motors are symmetrically distributed about the upper and lower parts of the mold shell.

[0024] A movable pressing plate is installed at the output end of the first motor, and the first motor pushes the movable pressing plate to move up and down. A limiting screw is provided on one side of the first motor, and the limiting screw assists the movable pressing plate to move.

[0025] Wherein, a buffer pressing plate passes through the top end of the movable pressing plate, and cushion blocks are arranged on both sides of the buffer pressing plate.

[0026] Furthermore, vacuum pumps are installed on both sides of the movable pressing plate, and the output end of the vacuum pump is connected to an exhaust hole. The exhaust holes are provided with two groups, and the two groups of exhaust holes are connected through the movable pressing plate.

[0027] Furthermore, a third embedded roller is embedded at one end of the movable pressing plate close to the mold shell, and the third embedded roller is provided in multiple groups distributed at equal intervals, and the roller direction of the third embedded roller is the same as the moving direction of the material supporting plate.

[0028] Furthermore, the one-way fresh air system further comprises a sealing cover plate, and the sealing cover plate is installed at the top of the roasting furnace body, a connecting metal frame is installed in the middle of the sealing cover plate, and a cooling fan is installed in the middle of the connecting metal frame.

[0029] Wherein, a ventilation fin is installed on the top end of the connecting metal frame, and the bottom end of the connecting metal frame is connected to the air outlet of the vacuum pump.

[0030] The present invention provides a fully automatic shell baking system through improvement, which has the following improvements and advantages compared with the prior art:

[0031] First, the harmful gases HCI and NH3 generated during the high-temperature roasting of the mold shell in the roasting furnace body are extracted and treated through the mechanical exhaust of the exhaust pump inside the fresh air system and then exhausted by the heat dissipation fan, so as to avoid the harm of HCI and NH3 gases to the physical and mental health of employees and reduce the corrosion of harmful gases to the factory and electromechanical equipment. In addition, when the harmful gases are extracted, a large amount of particulate matter and dust generated by the carbonization of raw materials after the high-temperature roasting of the mold shell will be extracted, thereby providing a clean processing environment for the subsequent roasting of the mold shell. Since the surface of the membrane shell is relatively soft before high-temperature calcination and the surface is not cooled before high-temperature calcination, it is easy to embed dust. Therefore, the calcination environment is dusty, which will lead to shrinkage holes, pores and protrusions on the castings during the subsequent calcination of the membrane shell. The mechanical exhaust of the exhaust pump is combined with the natural air intake, and the harmful gases are discharged from the top to form a negative pressure area in the furnace, so that the air in the furnace flows;

[0032] In addition, the first motor is provided with a group at the top and bottom of the support plate in the calcining area, respectively, so that the vacuum pump can simultaneously extract harmful gases from the top and bottom of the mold shell. The method of extracting air at only one end will cause the dust particles at the other end to scratch the surface of the mold shell when passing through the mold shell, and starting the first motor can push the movable pressing plate toward the mold shell, so as to facilitate the adjustment of the distance between the exhaust hole and the mold shell according to the specific volume of the mold shell. The closer the exhaust hole is to the mold shell, the better the suction effect.

[0033] Secondly, by placing the mold shell on the material tray, the membrane shell batch is put into the furnace by mechanical movement, which is convenient for loading and unloading the mold shell batch. The function of the material tray is to help the mold shell batch to cool down and harden naturally after burning. The natural cooling method of flowing air can avoid the cracking problem caused by uneven temperature inside and outside the shell compared to rapid cooling, and the cost is lower, the state of the mold shell is more stable, and the service life is longer;

[0034] In addition, by arranging the mold shells evenly on the material support plate before calcining and keeping a safe distance between the mold shells, the surface of the mold shells is relatively soft due to the high temperature activity when they are just out of the furnace after burning, and adhesion will occur when they come into contact with other materials or similar materials. In addition, the size of the mold shells will change during calcination and after calcination. The volume before calcination is normal, it will expand during high-temperature calcination, and it will shrink after cooling. This structure, which does not touch or move the mold shell during the entire process, can minimize the defects of the mold shell.

[0035] Thirdly, by installing supporting side panels on both sides of the inside of the protective side net, and then placing the material tray on the top of the supporting side panel, using a fixing plug-in to clamp one side of the top, and then inserting a reinforcing rod through the fixing plug-in, the preset hole and the through hole on the supporting side panel to fix the material tray, and then using a fixing angle piece at the bottom to fix it to further improve the stability of the installation of the material tray. The purpose of this step is to facilitate the stabilization of the mold shell when moving the cart composed of the protective side net. In addition, the middle support plate in the middle of the bottom end of the material tray plays a role in further increasing the support stability;

[0036] In addition, when the trolley composed of the protective side net reaches one end of the roasting furnace body to load materials, the fixing plug-in, the fixing angle piece and the reinforcing plug rod are unlocked, and the material presentation tray is pushed into the furnace. The semi-embedded rollers on both sides and the first embedded roller in the middle assist the movement of the material presentation tray, so that the material presentation tray can move faster and more labor-saving, and the deviation correction positioning blocks on both sides play a limiting role, which can prevent the material presentation tray from moving too fast and causing deviation. In addition, the second embedded rollers on the U-shaped stationary plate and the calcination zone support plate also assist the sliding of the material presentation tray. This structure is designed to avoid the problem of difficulty in loading and unloading materials due to excessive weight after placing multiple sets of mold shells on the material presentation tray.

[0037] Fourthly, by laying the slide rail composed of fixed rails on the floor of the workshop, when the protective side net moves on the fixed rails, the fixed rails limit the moving direction of the cart and reduce bumps and accidents. The moving pulley is embedded in the slide rail composed of the fixed rails to drive the cart to move. The auxiliary roller is supported on the top of the fixed rail to further increase the stability and smoothness of the roller movement. Then, the turning rail can turn in different directions to push the cart in different directions. The telescopic rod can support the cart when it reaches the roasting furnace body.

[0038] In addition, multiple groups of mold shells are placed on the material presentation tray, which can be used to load and unload mold shells in batches. The moving trajectory of the material presentation tray is stable, and the material presentation tray is on the same horizontal line during loading and unloading and calcining in the furnace, avoiding the problem of mold shells falling due to up and down transportation. The batch unloading method enables the loading and unloading speed to keep up with the processing method of the fully automatic intelligent combustion mold shells. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further explained below in conjunction with the accompanying drawings and Examples:

[0040] Figure 1 It is a schematic diagram of a first stereoscopic perspective structure of the present invention;

[0041] Figure 2 It is a three-dimensional enlarged schematic diagram of the one-way fresh air system of the present invention;

[0042] Figure 3 It is a schematic diagram of a first three-dimensional explosion structure of the present invention;

[0043] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0044] Figure 5 It is a schematic diagram of a second three-dimensional explosion structure of the present invention;

[0045] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0046] Figure 7 For the present invention Figure 5 The enlarged structural diagram at C in the middle;

[0047] Figure 8 It is a schematic diagram of a third three-dimensional explosion structure of the present invention;

[0048] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at D in the middle;

[0049] Fig.10 It is a schematic diagram of a fourth three-dimensional explosion structure of the present invention;

[0050] Fig.11 It is a front view schematic diagram of the micro-pressure fresh air component of the present invention.

[0051] Description of reference numerals: 1. roasting furnace body; 2. fuel filling; 3. one-way fresh air system; 301. sealing cover plate; 302. ventilation fins; 303. connecting metal frame; 304. cooling fan; 4. automatic loading and unloading system; 401. protective side net; 402. extension handle; 403. supporting side plate; 404. preset hole; 405. fixed angle piece; 406. material support plate; 407. fixed plug-in; 408. reinforcement plug-in rod; 409. middle support plate; 410. first embedded roller; 411. semi-embedded roller; 412 , deviation correction positioning block; 413, telescopic rod; 414, moving pulley; 415, auxiliary roller; 416, fixed track; 417, turning track; 418, U-shaped stationary plate; 419, calcination zone support plate; 420, second embedded roller; 5, micro-pressure fresh air component; 501, first motor; 502, limit screw; 503, fixed top plate; 504, moving pressure plate; 505, buffer pressure plate; 506, vacuum pump; 507, movable pressure plate; 508, exhaust hole; 509, third embedded roller; 510, supporting pole. DETAILED DESCRIPTION

[0052] The following will be combined with the attached Figures 1 to 10 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0053] The present invention provides a fully automatic shell baking system through improvement. Figure 1-10 As shown in the figure, a fully automatic shell baking system includes a baking furnace body 1 and a fuel tank 2. An automatic loading and unloading system 4 is installed on one side of the baking furnace body 1, and the automatic loading and unloading system 4 transports the shells to be loaded and unloaded in batches. The automatic loading and unloading system 4 includes a material presentation tray 406, and the material presentation tray 406 is installed on one side of the baking furnace body 1, and the shells are placed on the top of the material presentation tray 406. By placing the shells on the material presentation tray 406, and then mechanically moving the shells into the batch furnace, it is convenient for loading and unloading the shells in batches. The function of the material presentation tray 406 is to help the shells to naturally cool down and harden after burning. The natural cooling method of flowing air can avoid the cracking problem caused by uneven temperature inside and outside the shell compared to rapid cooling, and the cost is lower, the state of the shell is more stable, and the service life is longer;

[0054] In addition, before calcining, the mold shells are evenly arranged on the material support plate 406, and a safe distance is maintained between the mold shells. Because the surface of the mold shells after burning is relatively soft due to the high temperature activity when they just come out of the furnace, they will stick to other materials or similar materials. In addition, because the size of the mold shells will change before calcining and after calcining, the volume before calcining is normal, it will expand during high-temperature calcination, and it will shrink after cooling. This structure of calcining without contacting or moving the mold shells throughout the process can minimize the defects of the mold shells.

[0055] By placing multiple groups of mold shells on the material presentation tray 406, the mold shells can be loaded and unloaded in batches, and the moving track of the material presentation tray 406 is stable. The material presentation tray 406 is on the same horizontal line during loading and unloading and calcining in the furnace, avoiding the problem of mold shells falling due to up and down transportation, and the batch discharge method enables the loading and unloading speed to keep up with the processing method of the fully automatic intelligent combustion mold shell;

[0056] The automatic loading and unloading system 4 also includes a protective side net 401, and extension handles 402 are installed on both sides of the protective side net 401, and a moving pulley 414 is installed at the bottom end of the protective side net 401.

[0057] There are two groups of protective side nets 401, and the two groups of protective side nets 401 are connected to the auxiliary rollers 415 at the bottom through a bracket to form a cart;

[0058] The automatic loading and unloading system 4 also includes a fixed rail 416, and the fixed rail 416 is provided with two symmetrical groups, and a turning rail 417 is installed between the two groups of fixed rails 416, and the turning rail 417 can be used to turn in different directions to push the cart in different directions. The telescopic rod 413 can support the cart when the cart reaches the roasting furnace body 1, and the movable pulley 414 moves in the track composed of the fixed rail 416. The slide rail composed of the fixed rail 416 is laid on the floor of the workshop. When the cart moves on the fixed rail 416, the fixed rail 416 plays a role in limiting the moving direction of the cart and reducing bumps and accidents. The movable pulley 414 is embedded in the slide rail composed of the fixed rail 416, which can drive the cart to move.

[0059] Auxiliary rollers 415 are installed on both sides of the bottom bracket of the protective side net 401, and the fixed angle piece 405 is in contact with the top of the fixed track 416. The auxiliary rollers 415 are supported on the top of the fixed track 416 to further increase the stability and smoothness of the roller movement.

[0060] The bottom end of one side of the cart formed by the protective side net 401 is equipped with a telescopic rod 413.

[0061] Support side panels 403 are installed inside both sides of the protective side net 401, and there are three groups of support side panels 403, which are installed at equal intervals from the top to the bottom.

[0062] Among them, the material presentation support plate 406 is installed on the top of the supporting side plate 403, and multiple groups of preset holes 404 are penetrated on both sides of the material presentation support plate 406, and a fixing plug-in 407 is installed on the top of one end of the material presentation support plate 406. This structure is achieved by installing the supporting side plates 403 on both sides inside the protective side net 401, and then placing the material presentation support plate 406 on the top of the supporting side plate 403, using the fixing plug-in 407 to clamp one side of the top, and a reinforcing plug-in 408 is penetrated on the side of the fixing plug-in 407 close to the material presentation support plate 406, and the reinforcing plug-in 408 is inserted into the fixing plug-in 407, the preset holes 404 and the through holes on the supporting side plate 403 to fix the material presentation support plate 406, and the reinforcing plug-in 408 penetrates the fixing plug-in 407, the material presentation support plate 406 and the supporting side plate 403, and

[0063] A fixed angle piece 405 is installed at the bottom of one end of the material presentation support plate 406. The fixed angle piece 405 is used to fix the material presentation support plate 406 at the bottom to further improve the stability of the installation. This step is used to facilitate stabilizing the mold shell when moving the cart composed of the protective side net 401;

[0064] A plurality of sets of deviation correction positioning blocks 412 are fixed on one side of the supporting side plate 403 close to the protective side net 401. The deviation correction positioning blocks 412 on both sides play a limiting role, which can prevent the material support plate 406 from moving too fast and causing deviation.

[0065] A plurality of sets of semi-embedded rollers 411 are installed on one side of the supporting side plate 403 away from the protective side net 401, and

[0066] A middle support plate 409 is provided at the middle position of the bottom of the material presentation support plate 406. In addition, the middle support plate 409 in the middle of the bottom end of the material presentation support plate 406 plays a role in further increasing the support stability, and the middle support plate 409 is inlaid with a first embedded roller 410 at one end close to the material presentation support plate 406. The material presentation support plate 406 plays a role in assisting the movement of the material presentation support plate 406 through the semi-embedded rollers 411 on both sides and the first embedded roller 410 in the middle, so that the material presentation support plate 406 can move faster and more labor-saving.

[0067] When the trolley composed of the protective side net 401 reaches one end of the roasting furnace body 1 to load the material, the locking of the fixed plug 407, the fixed angle piece 405 and the reinforcing plug rod 408 is unlocked, and the material support plate 406 is pushed into the furnace;

[0068] A U-shaped stationary plate 418 is installed at the middle position inside the roasting furnace body 1, and a calcining zone support plate 419 is installed on one side of the U-shaped stationary plate 418 close to the micro-pressure fresh air component 5. The second embedded roller 420 on the U-shaped stationary plate 418 and the calcining zone support plate 419 also assists the sliding of the material presentation support plate 406. This structure is to avoid the problem of difficulty in loading and unloading due to excessive weight after placing multiple sets of mold shells on the material presentation support plate 406;

[0069] The tops of the calcining zone support plate 419 and the U-shaped stationary plate 418 are both inlaid with second embedded rollers 420, and the second embedded rollers 420 are provided in multiple groups and are distributed at equal intervals. The roller direction of the second embedded rollers 420 is the same as the moving direction of the material presenting support plate 406. The function of 420 is to further assist the movement of the material presenting support plate 406.

[0070] A one-way fresh air system 3 is installed at the top of the roasting furnace body 1, and the one-way fresh air system 3 includes a cooling fan 304, which discharges harmful gases.

[0071] The one-way fresh air system 3 also includes a sealing cover plate 301, and the sealing cover plate 301 is installed at the top of the roasting furnace body 1, a connecting metal frame 303 is installed in the middle of the sealing cover plate 301, and a cooling fan 304 is installed in the middle of the connecting metal frame 303.

[0072] The top of the metal frame 303 is equipped with ventilation fins 302, and the bottom of the metal frame 303 is connected to the air outlet of the vacuum pump 506. The vacuum pump 506 combines mechanical exhaust with natural air intake, and after the harmful gas is discharged from the top, a negative pressure area is formed in the furnace, so that the air in the furnace flows.

[0073] This structure mechanically exhausts air through the exhaust pump 506 inside the fresh air system, and then exhausts air through the heat dissipation fan 304 to extract and treat the harmful gases HCI and NH3 generated during the high-temperature roasting of the mold shell in the roasting furnace body 1, thereby preventing HCI and NH3 gases from harming the physical and mental health of employees and reducing the corrosion of factory buildings and electromechanical equipment caused by harmful gases. In addition, while extracting harmful gases, a large amount of particulate matter and dust generated by carbonization of raw materials after high-temperature roasting of the mold shell will be extracted, thereby providing a clean processing environment for subsequent mold shell roasting. Since the surface of the membrane shell is soft before high-temperature calcination and dust is easily embedded in the surface before high-temperature calcination without cooling, the calcination environment is dusty, which will cause shrinkage holes, pores and protrusions on the casting during subsequent membrane shell calcination.

[0074] The one-way fresh air system 3 includes a micro-pressure fresh air component 5, and the micro-pressure fresh air component 5 extracts harmful gases in the roasting furnace body 1.

[0075] Among them, the micro-pressure fresh air component 5 includes:

[0076] The first motor 501 is installed on the top of the roasting furnace body 1 at one side away from the one-way fresh air system 3, and the first motor 501 drives the limiting screw 502 to rotate through gear transmission, and the limiting screw 502 pushes the movable pressing plate 504 to approach the mold shell through thread transmission. The movable pressing plate 504 is penetrated by the supporting vertical rod 510 around it to facilitate limiting. The two sides of the movable pressing plate 504 are installed with vacuum pumps 506, and the vacuum pumps 506 extract harmful gases generated when the mold shell is burned;

[0077] There are two groups of first motors 501, and the two groups of first motors 501 are symmetrically distributed about the mold shell. One group of first motors 501 is respectively provided at the top and bottom of the calcining zone support plate 419, so that the vacuum pump 506 can simultaneously extract harmful gases from the top and bottom of the mold shell. The method of extracting gas at only one end will cause dust particles at the other end to scratch the surface of the mold shell when passing through the mold shell.

[0078] Among them, a movable pressing plate 504 is installed at the output end of the first motor 501. Starting the first motor 501 can push the movable pressing plate 504 toward the mold shell, so as to adjust the distance between the exhaust hole 508 and the mold shell according to the specific volume of the mold shell. The closer the exhaust hole 508 is to the mold shell, the better the suction effect. The first motor 501 pushes the movable pressing plate 504 to move up and down. A limiting screw 502 is provided on one side of the first motor 501, and the limiting screw 502 assists the movable pressing plate 504 to move.

[0079] Among them, a buffer pressing plate 505 penetrates the top of the movable pressing plate 504, and cushion blocks are provided on both sides of the buffer pressing plate 505;

[0080] Air pumps 506 are installed on both sides of the movable pressing plate 504, and the output end of the air pump 506 is connected to air exhaust holes 508. There are two groups of air exhaust holes 508, and the two groups of air exhaust holes 508 are connected through a movable pressing plate 507;

[0081] A third embedded roller 509 is embedded at one end of the movable pressing plate 504 close to the mold shell, and the third embedded roller 509 is provided with multiple groups distributed at equal intervals, and the roller direction of the third embedded roller 509 is the same as the moving direction of the material supporting plate 406.

[0082] Working principle: First, the harmful gases HCI and NH3 generated during the high-temperature roasting of the mold shell in the roasting furnace body 1 are extracted and treated through the exhaust pump 506 inside the fresh air system and then exhausted through the cooling fan 304, so as to avoid the HCI and NH3 gases from harming the physical and mental health of employees and reduce the corrosion of the factory buildings and electromechanical equipment caused by the harmful gases. In addition, when the harmful gases are extracted, a large amount of particulate matter and dust generated by the carbonization of the raw materials after the high-temperature roasting of the mold shell will be extracted, thereby providing a clean processing environment for the subsequent roasting of the mold shell. Since the surface of the membrane shell is soft before high-temperature calcination and the surface is not cooled before high-temperature calcination, it is easy to embed dust. Therefore, the calcination environment is dusty, which will lead to shrinkage holes, pores and protrusions on the casting during the subsequent calcination of the membrane shell. The mechanical exhaust of the exhaust pump 506 is combined with the natural air intake, and the harmful gases are discharged from the top to form a negative pressure area in the furnace, so that the air in the furnace flows.

[0083] Then, by installing the supporting side panels 403 on both sides inside the protective side net 401, the material presentation support plate 406 is placed on the top of the supporting side panels 403, and the fixing plug-in 407 is used to clamp one side of the top, and then the reinforcing plug-in 408 is inserted through the fixing plug-in 407, the preset hole 404 and the through hole on the supporting side panel 403 to fix the material presentation support plate 406, and then the fixing angle piece 405 is used to fix the bottom end to further improve the stability of the installation of the material presentation support plate 406. The role of this step is to facilitate the stabilization of the mold shell when moving the cart composed of the protective side net 401. In addition, the middle support plate 409 in the middle of the bottom end of the material presentation support plate 406 plays a role in further increasing the support stability;

[0084] In addition, when the trolley composed of the protective side net 401 arrives at one end of the roasting furnace body 1 for loading, the locking of the fixed plug-in 407, the fixed angle piece 405 and the reinforcing plug rod 408 is unlocked, and the material presentation support plate 406 is pushed into the furnace. The material presentation support plate 406 assists the movement of the material presentation support plate 406 through the semi-embedded rollers 411 on both sides and the first embedded roller 410 in the middle, so that the material presentation support plate 406 can move faster and more labor-saving, and the deviation correction positioning blocks 412 on both sides play a limiting role, which can prevent the material presentation support plate 406 from moving too fast and causing deviation. In addition, the second embedded roller 420 on the U-shaped stationary plate 418 and the calcination zone support plate 419 also assists the sliding of the material presentation support plate 406. This structure is to avoid the problem of difficulty in loading and unloading due to excessive weight after placing multiple sets of mold shells on the material presentation support plate 406;

[0085] The slide rail composed of the fixed rail 416 is laid on the floor of the workshop. When the protective side net 401 moves on the fixed rail 416, the fixed rail 416 limits the moving direction of the cart and reduces bumps and accidents. The movable pulley 414 is embedded in the slide rail composed of the fixed rail 416 to drive the cart to move. The auxiliary roller 415 is supported on the top of the fixed rail 416 to further increase the stability and smoothness of the roller movement. Then, the turning rail 417 can turn in different directions to push the cart in different directions. The telescopic rod 413 can support the cart when the cart reaches the roasting furnace body 1.

[0086] Finally, before calcining, the mold shells are evenly arranged on the material support plate 406, and a safe distance is maintained between the mold shells. Because the surface of the mold shells after burning is soft due to the high temperature activity when they just come out of the furnace, they will stick to other materials or similar materials. In addition, because the size of the mold shells will change before calcining and after calcining, the volume before calcination is normal, it will expand during high-temperature calcination, and it will shrink after cooling. This structure of calcining without contacting or moving the mold shells throughout the process can minimize the defects of the mold shells.

[0087] In addition, the first motor 501 is provided with a group at the top and bottom of the calcination zone support plate 419, respectively, to facilitate the extraction of harmful gases from the top and bottom of the mold shell at the same time. The method of extracting air at only one end will cause the dust particles at the other end to scratch the surface of the mold shell when passing through the mold shell, and starting the first motor 501 can push the movable pressing plate 504 toward the mold shell, so as to facilitate the adjustment of the distance between the exhaust hole 508 and the mold shell according to the specific volume of the mold shell. The closer the exhaust hole 508 is to the mold shell, the better the suction effect.

[0088] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fully automatic shell baking system, comprising a baking furnace body (1) and a fuel tank (2), characterized in that: An automatic loading and unloading system (4) is installed on one side of the roasting furnace body (1), and the automatic loading and unloading system (4) transports mold shells for loading and unloading in batches. The automatic loading and unloading system (4) includes a material tray (406), and the material tray (406) is installed on one side of the roasting furnace body (1), and the mold shell is placed on the top of the material tray (406). A one-way fresh air system (3) is installed on the top of the inside of the roasting furnace body (1), and the one-way fresh air system (3) includes a cooling fan (304), and the cooling fan (304) exhausts harmful gases. The one-way fresh air system (3) includes a micro-pressure fresh air component (5), and the micro-pressure fresh air component (5) extracts harmful gases in the roasting furnace body (1). Wherein, the micro-pressure fresh air component (5) comprises: The first motor (501) is installed on the top of the roasting furnace body (1) at a side away from the one-way fresh air system (3), and the first motor (501) drives the movable pressure plate (504) close to the mold shell through power, and vacuum pumps (506) are installed on both sides of the movable pressure plate (504), and the vacuum pumps (506) extract harmful gases generated when the mold shell is burned.

2. A fully automatic shell baking system according to claim 1, characterized in that: The automatic loading and unloading system (4) further comprises a protective side net (401), and extension handles (402) are installed on both sides of the protective side net (401), and a movable pulley (414) is installed at the bottom end of the protective side net (401). There are two groups of protective side nets (401), and the two groups of protective side nets (401) are connected to the auxiliary rollers (415) at the bottom through a bracket to form a cart.

3. A fully automatic shell baking system according to claim 2, characterized in that: The automatic loading and unloading system (4) further comprises fixed rails (416), wherein the fixed rails (416) are provided with two symmetrical groups, and a turning rail (417) is installed between the two groups of fixed rails (416), and the movable pulley (414) moves within the track formed by the fixed rails (416). Auxiliary rollers (415) are installed on both sides of the bottom bracket of the protective side net (401), and the top ends of the fixed angle piece (405) and the fixed track (416) are in contact and connected. Wherein, a telescopic rod (413) is installed at the bottom end of one side of the cart formed by the protective side net (401).

4. A fully automatic shell baking system according to claim 2, characterized in that: Support side panels (403) are installed inside the two sides of the protective side net (401), and there are three groups of support side panels (403), which are installed at equal intervals from the top to the bottom. The material presentation support plate (406) is installed at the top of the supporting side plate (403), and a plurality of preset holes (404) are passed through the two sides of the material presentation support plate (406), a fixed plug-in (407) is installed at the top of one end of the material presentation support plate (406), and a reinforcing plug-in (408) is passed through the fixed plug-in (407) on the side close to the material presentation support plate (406), and the reinforcing plug-in (408) passes through the fixed plug-in (407), the material presentation support plate (406) and the supporting side plate (403), and A fixed angle piece (405) is installed at the bottom of one end of the material supporting plate (406).

5. A fully automatic shell baking system according to claim 4, characterized in that: A plurality of sets of deviation correction positioning blocks (412) are fixed on one side of the supporting side plate (403) close to the protective side net (401). Wherein, a plurality of sets of semi-embedded rollers (411) are installed on the side of the supporting side plate (403) away from the protective side net (401), and A middle support plate (409) is provided at the middle position of the bottom of the material presenting support plate (406), and a first embedded roller (410) is embedded at one end of the middle support plate (409) close to the material presenting support plate (406).

6. The fully automatic shell baking system according to claim 1, characterized in that: A U-shaped stationary plate (418) is installed at the middle position inside the roasting furnace body (1), and a calcining zone support plate (419) is installed on one side of the U-shaped stationary plate (418) close to the micro-pressure fresh air component (5). The tops of the calcining zone support plate (419) and the U-shaped stationary plate (418) are both inlaid with second embedded rollers (420), and the second embedded rollers (420) are provided in multiple groups and are distributed at equal intervals, and the rolling direction of the second embedded rollers (420) is the same as the moving direction of the material support plate (406).

7. A fully automatic shell baking system according to claim 6, characterized in that: The first motors (501) are provided with two groups, and the two groups of first motors (501) are symmetrically distributed about the mold shell. A movable pressing plate (504) is installed at the output end of the first motor (501), and the first motor (501) pushes the movable pressing plate (504) to move up and down. A limiting screw (502) is provided on one side of the first motor (501), and the limiting screw (502) assists the movable pressing plate (504) to move. Wherein, a buffer pressing plate (505) penetrates the top end of the movable pressing plate (504), and cushion blocks are provided on both sides of the buffer pressing plate (505).

8. The fully automatic shell baking system according to claim 7, characterized in that: Air pumps (506) are installed on both sides of the movable pressing plate (504), and the output end of the air pump (506) is connected to an air exhaust hole (508). The air exhaust holes (508) are provided with two groups, and the two groups of air exhaust holes (508) are connected through a movable pressing plate (507).

9. A fully automatic shell baking system according to claim 8, characterized in that: The movable pressing plate (504) is inlaid with a third embedded roller (509) at one end close to the mold shell, and the third embedded roller (509) is provided with multiple groups distributed at equal intervals, and the roller direction of the third embedded roller (509) is the same as the moving direction of the material support plate (406).

10. The fully automatic shell baking system according to claim 1, characterized in that: The one-way fresh air system (3) further comprises a sealing cover plate (301), and the sealing cover plate (301) is installed at the top of the roasting furnace body (1), a connecting metal frame (303) is installed in the middle of the sealing cover plate (301), and a cooling fan (304) is installed in the middle of the connecting metal frame (303). Wherein, a ventilation fin (302) is installed at the top end of the connecting metal frame (303), and the bottom end of the connecting metal frame (303) is connected to the air outlet of the vacuum pump (506).

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