A trolley furnace for high temperature annealing of oriented silicon steel

Abstract

The present invention discloses a trolley furnace for high-temperature annealing of oriented silicon steel, comprising a base, the base being connected with a trolley furnace assembly for high-temperature annealing, the trolley furnace assembly comprising: a furnace body, which is made of oriented silicon steel and installed on the base for providing a combustion environment; a gantry crane, which is installed on the base for providing support for the furnace body opening component; a barrier, which is installed on the gantry crane for closed adjustment of the furnace body feed end; a trolley assembly, which is installed on the base for conveying materials into the furnace body; the present invention relates to the technical field of gas-fired heating furnaces. In the oriented silicon steel high-temperature annealing trolley furnace, during the initial heating of the workpiece inside the device, the air pump extracts external air through the preheating part, the exhaust pipe, the heat exchange frame, and the filter element, and supplies air to the combustion nozzle assembly, and supplies power to the conductive seat and the heating tube. The heating tube generates heat and preheats the air flowing through the casing, and the gas temperature sensor detects the air temperature before the preheating part is heated.

Description

Technical Field

[0001] The invention relates to the technical field of gas heating furnaces, in particular to a trolley furnace for high-temperature annealing of oriented silicon steel. Background Art

[0002] At present, the annealing furnace equipment for oriented silicon steel mostly adopts the single electric bell furnace method and the step-type tunnel kiln method. The single electric bell furnace uses electric heating method for annealing, which consumes a lot of energy, and this annealing furnace has inner and outer covers, and each group needs to be equipped with three inner covers and two outer covers. The uniformity of the annealing furnace temperature is a very important link in the design of the furnace. The uniformity of the furnace temperature directly affects the heat treatment quality of the workpiece. The general annealing furnace has low temperature control accuracy and low work efficiency due to setting problems during operation. Due to the poor sealing setting, the fuel consumption is high. The equipment is easy to generate noise and harmful gases during operation, and the heat resistance effect is poor, which brings certain safety hazards to the work.

[0003] Publication No. CN205933893U provides a trolley-type gas annealing furnace, which is well-made, practical, safe and reliable in operation, with low pollution and high working efficiency. It can evenly heat the workpieces in the furnace, thereby obtaining a higher furnace temperature uniformity. As described in the above patent, when the existing oriented silicon steel high-temperature annealing trolley furnace is used, most of them adopt the method of recovering the waste heat of the flue gas to achieve the preheating of the air required by the combustion nozzle. However, when the furnace body initially burns the workpiece, the furnace body cannot generate enough heat to provide waste heat, thereby affecting the preheating efficiency of the air and the combustion effect of the combustion nozzle. In addition, since the combustion of gas will produce moisture, the moisture will be converted into high-temperature steam when heated. The device has a poor treatment effect on high-temperature steam, and it is easy to cause safety hazards due to the direct discharge of high-temperature steam, and the water vapor will be cooled and liquefied and flow back into the furnace body. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a high-temperature annealing trolley furnace for oriented silicon steel, which solves the problems that the device is difficult to continuously preheat the air supplied by the combustion nozzle, affecting the combustion effect, and it is difficult to effectively treat the water vapor generated by combustion.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A trolley furnace for high temperature annealing of oriented silicon steel, comprising a base, the base being connected with a trolley furnace assembly for high temperature annealing, the trolley furnace assembly comprising:

[0006] A furnace body, which is made of oriented silicon steel and is mounted on a base to provide a combustion environment;

[0007] Gantry crane, installed on the base to provide support for the furnace opening parts;

[0008] The barrier is installed on the gantry crane and used for closing and adjusting the feeding end of the furnace;

[0009] A trolley assembly, mounted on the base, for conveying materials into the furnace;

[0010] The combustion nozzle assembly is arranged at the front and rear ends of the inner side of the furnace body and is used for spraying fire on the materials on the trolley assembly;

[0011] The exhaust component is installed on the base to provide gas and air to the combustion nozzle assembly, and has the functions of providing air filtration, preheating, and heat recovery of combustion exhaust gas.

[0012] Preferably, the blocking member includes a baffle vertically slidably connected to the left side of the furnace body for adjusting the state of the feeding end of the furnace body, the front and rear ends of the base close to the right side of the top of the baffle are respectively rotatably connected with two groups of guide wheels for guiding, and the front and rear sides of the gantry crane are respectively connected along the X-axis with a group of electric hoists for adjusting the height of the baffle, and connecting plates are installed at the bottom of the two groups of electric hoists, and steel cables fixedly connected to the top of the baffle and fitted with the guide wheels are installed on the top of the connecting plates.

[0013] Preferably, the exhaust component includes a gas pipe installed on the front and rear sides of the furnace body and connected to the combustion nozzle assembly for providing gas. The combustion nozzle assembly is also connected to an air supply pipe for providing air near the outer side of the furnace body. An air pump with an exhaust end fixedly connected to the air supply pipe is installed on the upper side of the base. A preheating component for preheating air before combustion heating is installed at the exhaust end of the air pump. An exhaust pipe is installed on the left side of the preheating component. An exhaust component for conducting combustion exhaust gas is installed on the top of the furnace body. The exhaust component is connected to the exhaust pipe and is used to recover waste heat from combustion exhaust gas and treat water vapor.

[0014] Preferably, the preheating element includes a casing installed at the air outlet end of the air pump and fixedly connected to the exhaust pipe on the left side, a conductive seat for power supply is installed on the top of the casing, and a heating tube for preheating the air passing through the casing is installed near the inner side of the casing on the conductive seat, and the heating tube is made of conductive metal material.

[0015] Preferably, the exhaust component includes two groups of conduits installed on the top of the furnace body for conducting combustion exhaust gas, the two groups of conduits are installed with a connecting shell away from the furnace body, a cooling shell for exhaust gas cooling treatment is installed on the top of the connecting shell, a discharge pipe for exhaust gas discharge is installed on the top of the cooling shell, a heat exchange frame fixedly connected to the exhaust pipe and used for exhaust gas heat exchange treatment is installed on the inner side of the cooling shell, a gas temperature sensor for detecting the temperature of the heat exchange gas is installed on the side of the exhaust pipe close to the heat exchange frame, a filter element for gas filtering is installed on the right side of the heat exchange frame close to the outside of the cooling shell, a receiving shell for receiving liquefied water is installed at the middle end of the bottom of the connecting shell, and a drain valve is installed at the bottom of the receiving shell.

[0016] Preferably, the drain valve is a solenoid valve and a drain pipe is provided at the bottom; the interior of the heat exchange frame is hollow and is connected to the exhaust pipe and the interior of the filter element respectively.

[0017] Preferably, the filter element includes a filter shell installed on the right side of the heat exchange frame for exhausting air, a filter plate for filtering impurities in the air is rotatably connected to the middle part of the inner side of the filter shell, a recovery box for receiving filtered impurities is slidably connected to the bottom of the filter shell corresponding to the lower side of the filter plate, a scraper for stripping impurities is installed on the upper side of the filter shell that fits with the right side of the filter plate, a pulley assembly is connected to the left side of the filter plate near the filter shell, and a motor for driving the pulley assembly is installed on the outside of the filter shell.

[0018] Preferably, the filter plate is a circular plate with a plurality of filter holes on its surface, a feed trough is provided on the lower side of the filter shell corresponding to the upper end of the recovery box, the output end of the motor is coaxially fixedly connected to the driving pulley in the pulley assembly, and the driven pulley in the pulley assembly is coaxially fixedly connected to the filter plate.

[0019] Beneficial Effects

[0020] The present invention provides a trolley furnace for high temperature annealing of oriented silicon steel. Compared with the prior art, it has the following advantages:

[0021] Beneficial effects:

[0022] (1) The high-temperature annealing trolley furnace for oriented silicon steel is provided with an exhaust member in the device. During the initial heating process of the workpiece inside the device, the air pump draws outside air through the preheating member, the exhaust pipe, the heat exchange frame, and the filter member, and supplies air to the combustion nozzle assembly, and supplies power to the conductive seat and the heating tube. The heating tube generates heat and preheats the air flowing through the casing. The gas temperature sensor detects the air temperature before the preheating member is heated, and the flue gas generated by the heating of the furnace body is discharged through the duct, the connecting shell, the cooling shell, and the exhaust pipe. When the air drawn by the air pump passes through the inner side of the heat exchange frame, the flue gas flowing through the inner side of the cooling shell is subjected to heat absorption treatment by heat exchange, thereby realizing the recovery of the waste heat of the exhaust flue gas and promoting the liquefaction of water vapor in the flue gas when it is cooled, thereby avoiding the direct discharge of high-temperature water vapor to cause safety hazards. After the gas temperature sensor detects that the drawn air has reached a suitable temperature, it stops supplying power to the components inside the preheating member, thereby improving the air preheating efficiency and making full use of the waste heat of the exhaust flue gas, thereby improving the use efficiency of the device.

[0023] (2) In the high-temperature annealing trolley furnace for oriented silicon steel, a drain valve is arranged in the exhaust part. Water vapor is cooled and liquefied in the cooling shell. The liquefied water falls into the receiving shell under the action of gravity and is retained on the upper side of the drain valve. The receiving shell temporarily stores the cooling water. When the cooling water needs to be discharged, the drain valve is opened and the cooling water is discharged to the recovery end through the drain pipe, so as to avoid excessive cooling water from flowing back into the furnace body and reduce the impact on flue gas emissions.

[0024] (3) The oriented silicon steel high temperature annealing trolley furnace has a filter element arranged in the exhaust element. When the air pump draws outside air, the filter shell cooperates with the filter plate to filter solid impurities in the drawn air, thereby preventing the impurities from being directly introduced into the end of the combustion nozzle assembly and affecting the combustion efficiency. The motor and the pulley assembly, the scraper, and the recovery box cooperate with each other to strip and recover the impurities retained on the outer side of the filter plate, thereby avoiding blockage of the filter end and reducing the subsequent cleaning steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 is an enlarged view of the barrier member of the present invention;

[0027] Figure 3 It is a partial cross-sectional enlarged view of the exhaust member of the present invention;

[0028] Figure 4 It is an enlarged cross-sectional view of the preheating element of the present invention;

[0029] Figure 5 is an enlarged view of the filter element of the present invention;

[0030] Figure 6 It is a sectional perspective view of the present invention.

[0031] In the figure: 1. base; 2. furnace body; 3. gantry crane; 4. barrier; 41. electric hoist; 42. connecting plate; 43. steel cable; 44. guide wheel; 45. baffle; 5. trolley assembly; 6. exhaust part; 61. gas pipe; 62. gas supply pipe; 63. air pump; 64. preheating part; 641. casing; 642. conductive seat; 643. heating pipe; 65. exhaust pipe; 66. exhaust part; 661. conduit; 662. connecting shell; 663. cooling shell; 664. discharge pipe; 665. heat exchange frame; 666. gas temperature sensor; 667. filter element; 6671. filter shell; 6672. filter plate; 6673. recovery box; 6674. scraper; 6675. motor; 6676. pulley assembly; 668. drain valve; 7. combustion nozzle assembly. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] refer to Figure 1-6 , the present invention provides the following three technical solutions:

[0034] The first embodiment: a trolley furnace for high-temperature annealing of oriented silicon steel, comprising a base 1, the base 1 is connected with a trolley furnace assembly for high-temperature annealing, the trolley furnace assembly comprising: a furnace body 2, which is made of oriented silicon steel and is installed on the base 1 for providing a combustion environment; a gantry crane 3, which is installed on the base 1 for providing support for the opening parts of the furnace body 2; a barrier 4, which is installed on the gantry crane 3 for closing and adjusting the feeding end of the furnace body 2; a trolley assembly 5, which is installed on the base 1 for conveying materials into the furnace body 2; a combustion nozzle assembly 7, which is arranged at the front and rear ends of the inner side of the furnace body 2 for performing flame spraying on the materials on the trolley assembly 5;

[0035] The exhaust member 6 is installed on the base 1 to provide fuel gas and air to the combustion nozzle assembly 7, and has the functions of providing air filtration, preheating, and heat recovery of combustion exhaust gas; the barrier member 4 includes a baffle 45 vertically slidably connected to the left side of the furnace body 2 for adjusting the state of the feeding end of the furnace body 2, and the front and rear ends of the base 1 near the top right of the baffle 45 are rotatably connected with two groups of guide wheels 44 for guiding, and the front and rear sides of the gantry crane 3 are respectively connected along the X-axis with a group of electric hoists 41 for adjusting the height of the baffle 45, and the bottoms of the two groups of electric hoists 41 are both installed with connecting plates 42, and the tops of the connecting plates 42 are installed with steel cables 43 fixedly connected to the top of the baffle 45 and in contact with the guide wheels 44;

[0036] The exhaust member 6 includes a gas pipe 61 installed at the front and rear sides of the furnace body 2 and connected to the combustion nozzle assembly 7 for providing gas. The combustion nozzle assembly 7 is also connected to an air supply pipe 62 for providing air near the outer side of the furnace body 2. An air pump 63 is installed on the upper side of the base 1. The exhaust end of the air pump 63 is fixedly connected to the air supply pipe 62. A preheating member 64 for preheating air before combustion heating is installed at the exhaust end of the air pump 63. An exhaust pipe 65 is installed on the left side of the preheating member 64. An exhaust member 66 for leading out combustion exhaust gas is installed on the top of the furnace body 2. The exhaust member 66 is connected to the exhaust pipe 65 and is used to recover the residual heat of the combustion exhaust gas and treat water vapor; the preheating member 64 includes a casing 641 installed at the air outlet end of the air pump 63 and fixedly connected to the exhaust pipe 65 on the left side. A conductive seat 642 for electrification is installed on the top of the casing 641. A heating pipe 643 for preheating the air passing through the casing 641 is installed near the inner side of the casing 641 on the conductive seat 642. The heating pipe 643 is made of conductive metal material;

[0037] The exhaust member 66 includes two groups of conduits 661 installed on the top of the furnace body 2 for guiding out the combustion exhaust gas. A connecting shell 662 is installed on the two groups of conduits 661 away from the furnace body 2. A cooling shell 663 for exhaust gas cooling treatment is installed on the top of the connecting shell 662. A discharge pipe 664 for exhaust gas discharge is installed on the top of the cooling shell 663. A heat exchange frame 665 fixedly connected to the exhaust pipe 65 and used for exhaust gas heat exchange treatment is installed on the inner side of the cooling shell 663. A gas temperature sensor 666 for detecting the temperature of the heat exchange gas is installed on the side of the exhaust pipe 65 close to the heat exchange frame 665. A filter member 667 for gas filtering is installed on the right side of the heat exchange frame 665 close to the outer side of the cooling shell 663. A receiving shell for receiving liquefied water is installed at the middle end of the bottom of the connecting shell 662. A drain valve 668 is installed at the bottom of the receiving shell. During the initial heating process of the internal workpiece by the device, the air pump 63 passes through the preheating member 64. , the exhaust pipe 65, the heat exchange frame 665, and the filter element 667 extract the outside air and supply air to the combustion nozzle assembly 7. Since the temperature in the furnace body 2 is relatively low at this moment, the conductive seat 642 and the heating tube 643 are powered, and the heating tube 643 generates heat and preheats the air flowing through the casing 641. Before the gas passes through the casing 641, the gas temperature sensor 666 on the exhaust pipe 65 detects the temperature of the air flowing through the casing 641, and the flue gas generated by the heating of the furnace body 2 is discharged through the duct 661, the connecting shell 662, the cooling shell 663, and the exhaust pipe 664. The air pump 63 extracts air and absorbs heat from the flue gas flowing through the inner side of the cooling shell 663 through heat exchange when passing through the inner side of the heat exchange frame 665, so as to realize the recovery of the waste heat of the exhaust flue gas and promote the liquefaction of water vapor in the flue gas when it is cooled. After the gas temperature sensor 666 detects that the extracted air has reached a suitable temperature, it stops supplying power to the components inside the preheating element 64.

[0038] The second implementation mode is mainly different from the first implementation mode in that:

[0039] The drain valve 668 is a solenoid valve and a drain pipe is provided at the bottom. The interior of the heat exchange frame 665 is hollow and connected to the exhaust pipe 65 and the filter element 667 respectively. The water vapor is cooled and liquefied in the cooling shell 663. The liquefied water falls into the receiving shell under the action of gravity and stays on the upper side of the drain valve 668. When the cooling water needs to be discharged, the drain valve 668 is opened and the cooling water is discharged to the recovery end through the drain pipe.

[0040] The third implementation mode is different from the second implementation mode in that:

[0041] The filter element 667 includes a filter housing 6671 installed on the right side of the heat exchange frame 665 for extracting air, a filter plate 6672 for filtering impurities in the air is rotatably connected to the middle of the inner side of the filter housing 6671, a recovery box 6673 for receiving filtered impurities is slidably connected to the bottom of the filter housing 6671 corresponding to the lower side of the filter plate 6672, a scraper 6674 for stripping impurities is installed on the upper side of the filter housing 6671, a pulley assembly 6676 is connected to the left side of the filter plate 6672 near the filter housing 6671, and a motor 6675 for driving the pulley assembly 6676 is installed on the outer side of the filter housing 6671;

[0042] The filter plate 6672 is a circular plate with a plurality of filter holes on its surface. A material discharge trough is provided on the lower side of the filter shell 6671 corresponding to the upper end of the recovery box 6673. The output end of the motor 6675 is coaxially fixedly connected to the driving pulley in the pulley assembly 6676. The driven pulley in the pulley assembly 6676 is coaxially fixedly connected to the filter plate 6672. When the air pump 63 extracts external air, the filter shell 6671 cooperates with the filter plate 6672 to filter the solid impurities in the extracted gas, and the motor 6675 cooperates with the pulley assembly 6676, the scraper 6674 and the recovery box 6673 to peel off and recycle the impurities retained on the outside of the filter plate 6672.

[0043] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0044] When in use, the user places the workpiece to be annealed on the trolley assembly 5, starts the two sets of electric hoists 41, and the electric hoists 41 slide along the gantry crane 3. The electric hoists 41 drive the connecting plate 42 to move horizontally. The horizontally moving connecting plate 42 lifts the baffle 45 from the left side of the furnace body 2 through two sets of steel cables 43 and guide wheels 44, so that the trolley assembly 5 transports the workpiece to be annealed into the furnace body 2, and resets each link in the barrier 4. At this time, the furnace body 2 is closed, and power is supplied to the conductive seat 642 and the heating tube 643. The heating tube 643 generates heat, and the combustion nozzle is started. Component 7, air pump 63, guides external gas to the combustion nozzle component 7 side through the gas pipe 61. At the same time, the air pump 63 extracts external air through the preheating component 64, the exhaust pipe 65, the heat exchange groove inside the heat exchange frame 665, and the filter 667. When the extracted gas passes through the preheating component 64, it contacts the heating pipe 643 and becomes hot. Finally, the air is introduced into the end of the combustion nozzle component 7 through the air supply pipe 62 to supply gas for it. The combustion nozzle component 7 ignites the mixture of air and gas through its internal igniter and performs flame spraying on the workpiece on the upper side of the trolley component 5;

[0045] In the above process, the gas and air are mixed and burned to produce water and carbon dioxide. Under the action of high temperature, the water is converted into water vapor and discharged to the outside with the gas through the conduit 661, the connecting shell 662, the cooling shell 663, and the exhaust pipe 664. Among them, the air flowing through the heat exchange frame 665 exchanges heat with the gas flowing through the cooling shell 663 through the heat exchange frame 665, so that the flowing air in the heat exchange frame 665 is converted into hot gas, and the water vapor flowing through the cooling shell 663 is pre-cooled and liquefied and retained in the receiving shell at the bottom of the connecting shell 662. The air flowing through the exhaust pipe 65 is detected by the gas temperature sensor 666. When the air temperature reaches the appropriate temperature, After that, the power supply to the conductive seat 642 and the heating tube 643 is stopped to realize the waste heat utilization of the exhaust gas. During the air extraction process, the filter plate 6672 in the filter element 667 filters the solid impurities in the air, and the motor 6675 is started at a fixed time. The motor 6675 drives the filter plate 6672 to rotate through the pulley assembly 6676. The scraper 6674 scrapes the impurities retained on the filter plate 6672, and the scraped impurities fall into the recovery box 6673 under the action of gravity. Among them, the combustion nozzle assembly 7, the gas temperature sensor 666, the trolley assembly 5, and the electric hoist 41 are all existing technologies, and their specific internal structures and working principles are not described in detail here.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A trolley furnace for high temperature annealing of oriented silicon steel, comprising a base (1), characterized in that: The base (1) is connected to a trolley furnace assembly for high temperature annealing, and the trolley furnace assembly comprises: A furnace body (2), made of oriented silicon steel and mounted on the base (1) for providing a combustion environment; A gantry crane (3) is installed on the base (1) to provide support for the opening parts of the furnace body (2); A barrier (4) mounted on the gantry crane (3) for closing and adjusting the feed end of the furnace body (2); A trolley assembly (5) mounted on the base (1) and used for conveying materials into the furnace body (2); A combustion nozzle assembly (7) is arranged at the front and rear ends of the inner side of the furnace body (2) and is used for performing a flame spraying treatment on the material on the trolley assembly (5); The exhaust component (6) is installed on the base (1) and is used to provide fuel gas and air to the combustion nozzle assembly (7), and has the functions of providing air filtering, preheating, and heat recovery of combustion exhaust gas.

2. The high temperature annealing trolley furnace for oriented silicon steel according to claim 1, characterized in that: The blocking member (4) comprises a baffle (45) vertically slidably connected to the left side of the furnace body (2) for adjusting the state of the feeding end of the furnace body (2); the front and rear ends of the base (1) close to the top right side of the baffle (45) are rotatably connected with two groups of guide wheels (44) for guiding; the front and rear sides of the gantry crane (3) are respectively connected along the X-axis with a group of electric hoists (41) for adjusting the height of the baffle (45); the bottoms of the two groups of electric hoists (41) are both installed with connecting plates (42); the tops of the connecting plates (42) are installed with steel cables (43) fixedly connected to the top of the baffle (45) and in contact with the guide wheels (44).

3. The high temperature annealing trolley furnace for oriented silicon steel according to claim 1, characterized in that: The exhaust component (6) comprises a gas pipe (61) installed on the front and rear sides of the furnace body (2) and connected to the combustion nozzle assembly (7) for providing gas. The combustion nozzle assembly (7) is also connected to an air supply pipe (62) for providing air near the outer side of the furnace body (2). An air pump (63) is installed on the upper side of the base (1) and the exhaust end is fixedly connected to the air supply pipe (62). A preheating component (64) for preheating air before combustion heating is installed at the exhaust end of the air pump (63). An exhaust pipe (65) is installed on the left side of the preheating component (64). An exhaust component (66) for conducting combustion exhaust gas is installed on the top of the furnace body (2). The exhaust component (66) is connected to the exhaust pipe (65) and is used to recover the residual heat of the combustion exhaust gas and treat water vapor.

4. The high temperature annealing trolley furnace for oriented silicon steel according to claim 3, characterized in that: The preheating element (64) comprises a casing (641) installed at the air outlet end of the air pump (63) and fixedly connected to the exhaust pipe (65) on the left side; a conductive seat (642) for powering on is installed on the top of the casing (641); a heating tube (643) for preheating the air passing through the casing (641) is installed near the inner side of the casing (641) on the conductive seat (642); and the heating tube (643) is made of a conductive metal material.

5. The high temperature annealing trolley furnace for oriented silicon steel according to claim 3, characterized in that: The exhaust member (66) comprises two groups of conduits (661) installed on the top of the furnace body (2) for guiding out the combustion waste gas, the two groups of conduits (661) are installed with a connecting shell (662) on the side away from the furnace body (2), a cooling shell (663) for cooling the waste gas is installed on the top of the connecting shell (662), a discharge pipe (664) for exhausting the waste gas is installed on the top of the cooling shell (663), and a fixed connection with the exhaust pipe (65) is installed on the inner side of the cooling shell (663). A heat exchange frame (665) is connected to the connecting shell (662) and used for heat exchange treatment of exhaust gas. A gas temperature sensor (666) for detecting the temperature of the heat exchange gas is installed on the exhaust pipe (65) near the heat exchange frame (665). A filter element (667) for gas filtering is installed on the right side of the heat exchange frame (665) near the outside of the cooling shell (663). A receiving shell for receiving liquefied water is installed at the middle end of the bottom of the connecting shell (662), and a drain valve (668) is installed at the bottom of the receiving shell.

6. The high temperature annealing trolley furnace for oriented silicon steel according to claim 5, characterized in that: The drain valve (668) is a solenoid valve and is provided with a drain pipe at the bottom. The interior of the heat exchange frame (665) is hollow and is respectively connected to the interior of the air extraction pipe (65) and the filter element (667).

7. The high temperature annealing trolley furnace for oriented silicon steel according to claim 5, characterized in that: The filter element (667) comprises a filter shell (6671) mounted on the right side of the heat exchange frame (665) for extracting air, a filter plate (6672) for filtering impurities in the air is rotatably connected to the middle part of the inner side of the filter shell (6671), a recovery box (6673) for receiving filtered impurities is slidably connected to the bottom of the filter shell (6671) corresponding to the lower side of the filter plate (6672), a scraper (6674) for stripping impurities is mounted on the upper side of the inner side of the filter shell (6671), a pulley assembly (6676) is connected to the left side of the filter plate (6672) near the filter shell (6671), and a motor (6675) for driving the pulley assembly (6676) is mounted on the outer side of the filter shell (6671).

8. The high temperature annealing trolley furnace for oriented silicon steel according to claim 7, characterized in that: The filter plate (6672) is a circular plate and has a plurality of filter holes on its surface. A material discharge trough is provided on the lower side of the filter housing (6671) corresponding to the upper end of the recovery box (6673). The output end of the motor (6675) is coaxially fixedly connected to the driving pulley in the pulley assembly (6676), and the driven pulley in the pulley assembly (6676) is coaxially fixedly connected to the filter plate (6672).

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