Anti-overheat mica heater

Abstract

The application discloses an anti-overheating mica heater, which comprises a mica heater, an insulating sleeve is arranged on the outer side of the mica heater, a plurality of anti-overheating mechanisms are uniformly arranged on the periphery of the insulating sleeve, a heat sensing mechanism is installed on the inner top of the insulating sleeve, a plurality of sliding seats are arranged on the periphery of the outer side of the insulating sleeve, rotating shafts are connected to the two ends of the anti-overheating mechanisms, an electric control push rod is installed on the inner side of the insulating sleeve, and one end of the electric control push rod is movably connected to one side of the anti-overheating mechanism. The anti-overheating mechanisms are uniformly distributed on the periphery of the insulating sleeve, so that when the internal heat is high, the heat can be dissipated through the heat dissipation grooves to ensure the internal heat dissipation, and when the load is high, the electric control push rod can push the rotating shaft to be opened, thereby achieving a wide range of ventilation effect, quickly solving the problem of overheating damage, and prolonging the service life of the heater.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mica heaters, in particular to a kind of anti-overheating mica heater. BACKGROUND

[0002] Mica heater refers to the electric appliance using electric energy to achieve heating effect, it is small in size, high in heating power, and is widely used in household appliances, such as electric rice cooker, microwave oven, electronic sterilizer, etc., among which mica heater is often used as heating component in various agricultural and industrial occasions, such as mold heating, plastic machinery, and other heating, drying devices, etc.

[0003] In the prior art, such as Chinese patent No. CN112998379A "a mica conical cylinder heater", including mica cylinder, mica sheet, the mica cylinder is conical cylinder, and multiple mica sheets are fixed on the outer side of the mica cylinder. The structural design of the conical body mica cylinder greatly increases the installation position of the electronic parts, realizes small size without affecting the installation interference of the electronic parts, ensures the electrical clearance between each electronic part, makes the product more safe in design. Groove is opened on the specific position of the electronic parts installed on the conical body mica cylinder, which makes the heat transfer between the resistance wire and the electronic parts more effective, and each electronic part can play its respective role more effectively. The design of the conical body mica cylinder makes the product work without affecting the ventilation volume, meeting the customer's demand.

[0004] In the prior art, the existing mica heater has insufficient sealing between structures, which will cause poor heat conduction during the heating process of the mica cooperating heater, and then overheat phenomenon occurs beyond the allowed temperature, so as to affect the service life of the mica heater equipment. In view of the above problems, an anti-overheating mica heater is proposed. SUMMARY

[0005] The purpose of the present application is to provide an anti-overheating mica heater to solve the problem of the existing technology that the mica heater has insufficient sealing between structures during operation, which will cause poor heat conduction during the heating process of the mica cooperating heater, and then overheat phenomenon occurs beyond the allowed temperature, so as to affect the service life of the mica heater equipment.

[0006] In order to achieve the above object, the present application provides the following technical scheme: A kind of anti-overheating mica heater, including mica heater, the outside of the mica heater is provided with heat preservation sleeve, a plurality of anti-overheating mechanisms are uniformly provided on the periphery of the heat preservation sleeve, heat sensing mechanism is installed at the top of the inner side of the heat preservation sleeve, a plurality of slide mounts are provided on the periphery of the outer side of the heat preservation sleeve, both ends of the anti-overheating mechanism are connected with rotating shaft, electric control push rod is installed in the inner side of the heat preservation sleeve, one end of the electric control push rod is movably connected with one side of anti-overheating mechanism, a plurality of ventilation fans are uniformly distributed on the periphery of the heat preservation sleeve, sensor is provided at the top of the heat preservation sleeve, a plurality of slide mounts are distributed on the periphery of the outer side of the heat preservation sleeve, by uniformly distributing anti-overheating mechanism on the periphery of heat preservation sleeve, heat preservation sleeve is then provided on the outside of mica heater, a plurality of heat dissipation grooves are uniformly opened on the side of anti-overheating mechanism, and the two ends of anti-overheating mechanism are movably connected with heat preservation sleeve by rotating shaft, by being connected with the side of anti-overheating mechanism by electric control push rod, when internal heat is higher, ventilation and heat dissipation can be carried out through heat dissipation groove, to ensure internal, when overload, rotating shaft can be opened by electric control push rod, wide range of ventilation effect is realized, to quickly solve the problem of overheating damage, so as to realize the effect of anti-overheating protection of mica heater, prolong the service life of heater, the temperature generated by mica heater can be sensed by heat sensing mechanism, when the temperature is too high, when mica heater overheats, sensor can be sensed and data can be transmitted to receiver by sensing line, and the opening and closing of anti-overheating mechanism can be realized by receiver receiving and controlling electric control push rod, at the same time, ventilation fan is used to cooperate to ventilate and blow, to dissipate internal heat, so as to further realize the effect of efficient heat dissipation, avoid equipment failure caused by delayed heat dissipation after overheating, avoid the problem of insufficient heating effect caused by long-term heat dissipation, further affect normal use, by sliding connection between slide mount and slide mount, and slide mount is installed on the periphery of heat preservation sleeve, and a plurality of ventilation grooves are uniformly penetrated on the side of slide mount, so that when mica heating appears overheating, anti-overheating mechanism can be opened, and slide mount is used to improve heat dissipation space, so as to improve heat dissipation effect, and ventilation effect in multiple positions can be realized by cooperating with ventilation groove, improve the overall multiple heat dissipation effect, in addition, the sliding connection between slide mount and ventilation groove facilitates the quick installation and disassembly effect of mica heater and heat preservation sleeve, when failure occurs, quick inspection and repair can be carried out, avoid the problem of inconvenient operation.

[0007] Preferably, the side of the mica heater is fixedly provided with a heating controller, one end of the heating controller penetrates the side of the heat preservation cover, one end of the heating controller is fixedly connected with a connecting line, the heating controller is connected with the mica sheet through the connecting line, and the heating controller and the mica sheet are electrically connected, so that the mica sheet is matched with the electric power to realize the heating effect.

[0008] Preferably, the side of the mica heater is fixedly provided with a heating controller, one end of the heating controller penetrates the side of the heat preservation cover, one end of the heating controller is fixedly connected with a connecting line, the heating controller is connected with the mica sheet through the connecting line, and the heating controller and the mica sheet are electrically connected, so that the mica sheet is matched with the electric power to realize the heating effect.

[0009] Preferably, the side of the mica heater is fixedly provided with a heating controller, one end of the heating controller penetrates the side of the heat preservation cover, one end of the heating controller is fixedly connected with a connecting line, the heating controller is connected with the mica sheet through the connecting line, and the heating controller and the mica sheet are electrically connected, so that the mica sheet is matched with the electric power to realize the heating effect.

[0010] Preferably, the top of the heat preservation cover is movably provided with an upper heat preservation cover, the bottom of the heat preservation cover is movably provided with a lower heat preservation cover, and the bottom of the lower heat preservation cover is fixedly provided with a bottom column. When the upper heat preservation cover and the lower heat preservation cover are matched with the heat preservation cover in a closed state, an effective heat preservation effect is provided, heat loss is avoided, energy is saved, and the bottom column can realize the installation support effect.

[0011] Preferably, the bottom of the upper heat preservation cover is provided with a plurality of connecting plates distributed in a circle, and one end of the connecting plate is connected to the inner wall bottom of the mica heater. The connecting plate can conveniently provide the connection and installation between the upper heat preservation cover and the heat preservation cover.

[0012] Preferably, the side of the anti-overheating mechanism is uniformly provided with a plurality of heat dissipation grooves, and the two ends of the rotating shaft are movably penetrated into the two ends of the heat preservation cover. The heat dissipation grooves can cooperate with the anti-overheating mechanism to provide the heat dissipation and ventilation effect, avoid the overheating phenomenon, and provide a certain protection effect for the equipment.

[0013] Preferably, the heat preservation cover is provided with a plurality of installation columns distributed in a circle, one end of the ventilation fan is installed on one side of the installation column, and the side of the installation column is movably connected with the side of the anti-overheating mechanism. The installation column can provide an installation position for the ventilation fan, and the inside is connected with an electric wire, so as to realize the protection function of overheating, ventilation, heat dissipation and blowing of the control equipment and the sensing equipment.

[0014] Preferably, the thermal sensing mechanism is electrically connected with a sensor, the side of the sensor is fixedly connected with a sensing wire, one end of the sensing wire is fixedly connected with a receiver, the side of the receiver is connected to the outside of the heat preservation sleeve, and the sensor can send the heat information sensed and collected by the thermal sensing mechanism to the receiver, thereby facilitating control and realizing the heat dissipation monitoring and control effect.

[0015] Preferably, one end of the sliding frame is slidingly connected with a sliding seat, and the side of the sliding frame is uniformly and pervasively provided with a plurality of ventilation grooves, the sliding seat can conveniently provide a position for mounting and connecting the sliding frame, and the ventilation grooves cooperate with the space expanded by the sliding frame to realize the auxiliary heat dissipation effect.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1、In the present application, the anti-overheating mechanism is uniformly distributed around the heat preservation sleeve, the heat preservation sleeve is arranged outside the mica heater, a plurality of heat dissipation grooves are uniformly arranged on the side of the anti-overheating mechanism, the anti-overheating mechanism is movably connected with the heat preservation sleeve through the rotating shaft at both ends, the electric control push rod is connected with the side of the anti-overheating mechanism, so that when the internal heat is high, the heat dissipation grooves can be used for ventilation and heat dissipation, so as to ensure the internal heat, when the overload occurs, the rotating shaft can be opened by pushing the electric control push rod, so as to realize the wide-range ventilation effect, so as to quickly solve the problem of overheating damage, thereby realizing the anti-overheating protection effect of the mica heater, and prolonging the service life of the heater.

[0018] 2、In the present application, the heat sensing mechanism is arranged, the temperature generated by the mica heater can be sensed by the heat sensing mechanism, when the temperature is too high, the mica heater is overheated, the sensor can sense and transmit the data to the receiver through the sensing wire, the receiver receives and controls the electric control push rod to realize the opening and closing of the anti-overheating mechanism, at the same time, the ventilation fan is used for ventilation and blowing, so as to further realize the efficient heat dissipation effect, avoid the equipment failure caused by the heat dissipation not in time after overheating, and avoid the problem that the heating effect is insufficient due to long-term heat dissipation, further affecting the normal use.

[0019] 3、The application has the advantages that the sliding seat is arranged, the sliding seat is connected with the sliding frame in sliding mode, the sliding frame is installed on the periphery of the heat preservation cover, and a plurality of ventilation grooves are uniformly arranged on the side surface of the sliding frame, so that when the mica heater is overheated, the opening of the anti-overheating mechanism can be matched, the heat dissipation space is increased by the sliding frame, the heat dissipation effect is improved, the multi-position ventilation effect is realized by the ventilation grooves, the overall multi-heat dissipation effect is improved, and the sliding connection between the sliding frame and the ventilation grooves facilitates the quick installation and disassembly of the mica heater and the heat preservation cover, so that the quick inspection and maintenance can be realized when a fault occurs, and the inconvenience of operation is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view of the anti-overheating mica heater.

[0021] Figure 2 It is another angle structure schematic view of the anti-overheating mica heater.

[0022] Figure 3 It is an internal partial structure schematic view of the anti-overheating mica heater.

[0023] Figure 4 It is a structure schematic view of the heating part of the anti-overheating mica heater.

[0024] Figure 5 It is a structure schematic view of the heat sensing device of the anti-overheating mica heater.

[0025] Figure 6 It is a structure schematic view of the anti-overheating mechanism of the anti-overheating mica heater.

[0026] Figure 7 It is a structure schematic view of the anti-overheating mechanism part of the anti-overheating mica heater.

[0027] Figure 8 It is an enlarged structure schematic view of A of the anti-overheating mica heater.

[0028] In the figure:

[0029] 1, mica heater; 2, heat preservation cover; 3, anti-overheating mechanism; 4, heat sensing mechanism; 5, sliding seat; 11, heating controller; 12, connection line; 13, mica sheet; 14, heating wire; 15, connecting rod; 21, upper heat preservation cover; 22, lower heat preservation cover; 23, bottom column; 24, connecting plate; 31, heat dissipation groove; 32, rotating shaft; 33, electric control push rod; 34, mounting column; 35, ventilation fan; 41, sensor; 42, sensing line; 43, receiver; 51, sliding frame; 52, ventilation groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work, fall within the protection scope of the present application.

[0031] With reference to Figures 1-8As shown: A mica heater with overheat protection includes a mica heater 1, an insulation sleeve 2 on the outer side of the mica heater 1, multiple overheat protection mechanisms 3 evenly arranged around the circumference of the insulation sleeve 2, a heat sensing mechanism 4 installed on the top inner side of the insulation sleeve 2, multiple sliding seats 5 arranged around the outer side of the insulation sleeve 2, a rotating shaft 32 connected to both ends of the overheat protection mechanism 3, an electrically controlled push rod 33 installed on the inner side of the insulation sleeve 2, one end of the electrically controlled push rod 33 being movably connected to one side of the overheat protection mechanism 3, multiple ventilation fans 35 evenly distributed around the circumference of the insulation sleeve 2, a sensor 41 installed on the top of the insulation sleeve 2, and multiple sliding brackets 51 distributed around the outer side of the insulation sleeve 2. By evenly distributing the overheat protection mechanism 3... Distributed around the perimeter of the insulation sleeve 2, which is located on the outer side of the mica heater 1, multiple heat dissipation grooves 31 are evenly distributed on the side of the overheat protection mechanism 3. The two ends of the overheat protection mechanism 3 are movably connected to the insulation sleeve 2 via rotating shafts 32. An electrically controlled push rod 33 is connected to the side of the overheat protection mechanism 3, facilitating ventilation and heat dissipation through the heat dissipation grooves 31 when the internal heat is high, ensuring internal stability. In case of overload, the electrically controlled push rod 33 can push the rotating shaft 32 open, achieving a wide-range ventilation effect to quickly resolve overheating damage. This effectively protects the mica heater from overheating and extends its service life. The temperature generated by the mica heater 1 can be sensed by the thermal sensing mechanism 4. When the temperature is too high and the mica heater 1 overheats, the sensor 41 can sense the temperature and transmit the data to the receiver 43 through the sensor line 42. The receiver 43 receives the data and controls the electric control push rod 33 to realize the timed control of the opening and closing of the overheat protection mechanism 3. At the same time, the ventilation fan 35 is used to ventilate and dissipate the internal heat, thereby achieving a more efficient heat dissipation effect. This avoids equipment failure caused by insufficient heat dissipation after overheating, and also avoids the problem of insufficient heating effect caused by long-term heat dissipation, which further affects normal use. By connecting the sliding base 5 and the sliding frame... The sliding connection between the slide brackets 51 and 52 is used to install the slide bracket 51 around the insulation sleeve 2. The slide bracket 51 has multiple ventilation slots 52 evenly distributed on its side. This allows for the activation of the overheat protection mechanism 3 when overheating occurs due to mica heating. The slide bracket 51 also increases the heat dissipation space, thereby improving the heat dissipation effect. In addition, the ventilation slots 52 can achieve multi-position ventilation, improving the overall multi-level heat dissipation effect. Furthermore, the sliding connection between the slide bracket 51 and the ventilation slots 52 facilitates the quick installation and disassembly of the mica heater 1 and the insulation sleeve 2. In case of failure, quick inspection and maintenance can be carried out, avoiding the problem of inconvenient operation.

[0032] like Figure 2 - Figure 4As shown, a heating controller 11 is fixedly installed on the side of the mica heater 1. One end of the heating controller 11 passes through the side of the insulation sleeve 2. A connecting line 12 is fixedly connected to one end of the heating controller 11. The heating controller 11 is connected to the power supply through the connecting line 12, and the heating controller 11 is electrically connected to the mica sheet 13, thereby realizing the heating effect achieved by the power supply working in conjunction with the mica sheet.

[0033] like Figure 3 and Figure 4 As shown, the mica heater 1 has mounting grooves evenly distributed on its side. A mica sheet 13 is installed inside the mounting groove. A heating wire 14 is evenly wound around the outer wall of the mica sheet 13. The heating wire 14 is located inside the mounting groove. When the mica sheet 13 is energized, the mica is heated. At the same time, the heating wire 14 can be used to quickly dissipate heat, thus providing the function of mica heating.

[0034] like Figure 3 and Figure 4 As shown, multiple connecting rods 15 are evenly fixedly installed on both ends of the outer side of the mica heater 1. One end of each connecting rod 15 is connected to the inner side of the insulation sleeve 2. The mica heater 1 and the insulation sleeve 2 can be connected and fixedly installed through the connecting rods 15, while providing space for heat dissipation.

[0035] like Figure 1 - Figure 3 and Figure 5 As shown, an upper insulation cover 21 is movably installed on the top of the insulation sleeve 2, and a lower insulation cover 22 is movably installed on the bottom of the insulation sleeve 2. A base column 23 is fixedly installed on the bottom of the lower insulation cover 22. The upper insulation cover 21 and the lower insulation cover 22 work together to provide effective insulation when the insulation sleeve 2 is in a closed state, which can prevent heat loss and save energy. The base column 23 can provide installation support.

[0036] like Figure 3 and Figure 5 As shown, multiple connecting plates 24 are distributed around the bottom of the upper insulation cover 21. One end of the connecting plate 24 is connected to the bottom of the inner wall of the mica heater 1. The connecting plate 24 facilitates the connection and installation between the upper insulation cover 21 and the insulation sleeve 2.

[0037] like Figure 6 - Figure 8 As shown, multiple heat dissipation grooves 31 are evenly distributed on the side of the overheat protection mechanism 3. The two ends of the rotating shaft 32 are movably connected to the two ends of the insulation sleeve 2. The heat dissipation grooves 31, together with the overheat protection mechanism 3, provide the effect of heat dissipation and ventilation, avoid overheating, and provide a certain degree of protection for the equipment.

[0038] like Figure 6 -Figure 8 As shown, multiple mounting posts 34 are distributed around the perimeter of the insulation sleeve 2. One end of each ventilation fan 35 is mounted on one side of the mounting post 34. The side of the mounting post 34 is movably connected to the side of the overheat protection mechanism 3. The mounting post 34 provides an installation position for the ventilation fan 35. At the same time, it is internally connected with wires, which can work with control equipment and sensing equipment to realize the overheat ventilation and heat dissipation protection function.

[0039] like Figure 1 - Figure 3 and Figure 5 As shown, the thermal sensing mechanism 4 is electrically connected to the sensor 41. A sensing line 42 is fixedly connected to the side of the sensor 41, and a receiver 43 is fixedly connected to one end of the sensing line 42. The side of the receiver 43 is connected to the outside of the insulation sleeve 2. The heat information sensed and collected by the thermal sensing mechanism 4 can be sent to the receiver 43 through the sensor 41, thereby facilitating the control of the heat dissipation monitoring and control function.

[0040] like Figures 1-3 and Figure 6 As shown, a sliding base 5 is slidably connected to one end of the sliding bracket 51. Multiple ventilation slots 52 are evenly distributed on the side of the sliding bracket 51. The sliding base 5 provides a convenient position for the installation and connection of the sliding bracket 51. At the same time, the ventilation slots 52, together with the space expanded by the sliding bracket 51, achieve the effect of auxiliary heat dissipation.

[0041] In this invention, when the overheat-resistant mica heater is in use, the overheat protection mechanism 3 is first evenly distributed around the insulation sleeve 2, which is located on the outside of the mica heater 1. Multiple heat dissipation grooves 31 are evenly distributed on the side of the overheat protection mechanism 3. The two ends of the overheat protection mechanism 3 are movably connected to the insulation sleeve 2 via rotating shafts 32. An electrically controlled push rod 33 is connected to the side of the overheat protection mechanism 3, facilitating ventilation and heat dissipation through the heat dissipation grooves 31 when the internal heat is high, ensuring internal stability. In case of overload, the electrically controlled push rod 33 can push the rotating shaft 32 open, achieving a wide-range ventilation effect to quickly resolve overheating damage. This provides overheat protection for the mica heater and extends its service life. The thermal sensing mechanism 4 can sense the temperature generated by the mica heater 1. When the temperature is too high and the mica heater 1 overheats, the sensor 41 senses the temperature and transmits the data through the sensor line 42 to the receiver 43, which receives and controls the signal. The electric control push rod 33 controls the opening and closing of the overheat protection mechanism 3 at a time. At the same time, the ventilation fan 35 is used to blow air to dissipate internal heat, thereby achieving a more efficient heat dissipation effect. This avoids equipment failure caused by insufficient heat dissipation after overheating, and also avoids insufficient heating effect caused by long-term heat dissipation, which would further affect normal use. By sliding the sliding base 5 and the sliding frame 51, and installing the sliding frame 51 around the insulation sleeve 2, and with multiple ventilation slots 52 evenly distributed on the side of the sliding frame 51, it is possible to open the overheat protection mechanism 3 when overheating occurs through mica heating. At the same time, the sliding frame 51 increases the heat dissipation space, which is conducive to improving the heat dissipation effect. In addition, the ventilation slots 52 can achieve multi-position ventilation effect, improving the overall multi-level heat dissipation effect. Furthermore, the sliding connection between the sliding frame 51 and the ventilation slots 52 facilitates the quick installation and disassembly of the mica heater 1 and the insulation sleeve 2. In case of failure, quick inspection and maintenance can be carried out.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mica heater designed to prevent overheating, comprising a mica heater (1), characterized in that: The mica heater (1) is provided with an insulation sleeve (2) on its outer side. Multiple anti-overheating mechanisms (3) are evenly arranged around the insulation sleeve (2). A heat sensing mechanism (4) is installed on the top of the inner side of the insulation sleeve (2). Multiple sliding seats (5) are arranged around the outer side of the insulation sleeve (2). Rotating shafts (32) are connected to both ends of the anti-overheating mechanism (3). An electric control push rod (33) is installed on the inner side of the insulation sleeve (2). One end of the electric control push rod (33) is movably connected to one side of the anti-overheating mechanism (3). Multiple ventilation fans (35) are evenly distributed around the insulation sleeve (2). Multiple heat dissipation grooves (31) are evenly opened on the side of the anti-overheating mechanism (3). The two ends of the anti-overheating mechanism (3) are connected to the insulation sleeve (2) via rotating shafts (32). The insulation sleeve (2) is connected to the heat sink (31) by means of an electric push rod (33) and the side of the overheat protection mechanism (3). This facilitates ventilation and heat dissipation through the heat sink (31) when the internal heat is high, so as to ensure the internal heat is protected. When overloaded, the electric push rod (33) can be used to push the rotating shaft (32) to open. The top of the insulation sleeve (2) is equipped with a sensor (41). Multiple sliding brackets (51) are distributed around the outer side of the insulation sleeve (2). The sensor (41) senses and transmits the data through the sensor line (42) to the receiver (43). The receiver (43) receives and controls the electric push rod (33) to realize the timed control of the opening and closing of the overheat protection mechanism (3). At the same time, the ventilation fan (35) is used to blow air to dissipate the internal heat.

2. The mica heater for preventing overheating according to claim 1, characterized in that: A heating controller (11) is fixedly installed on the side of the mica heater (1). One end of the heating controller (11) passes through the side of the insulation sleeve (2). A connection line (12) is fixedly connected to one end of the heating controller (11).

3. The mica heater for preventing overheating according to claim 1, characterized in that: The mica heater (1) has a uniformly provided mounting groove on its side. A mica sheet (13) is installed on the inner side of the mounting groove. A heating wire (14) is uniformly wound around the outer wall of the mica sheet (13). The heating wire (14) is located on the inner side of the mounting groove.

4. The mica heater for preventing overheating according to claim 1, characterized in that: Multiple connecting rods (15) are evenly fixedly installed on both ends of the outer side of the mica heater (1), and one end of each connecting rod (15) is connected to the inner side of the insulation sleeve (2).

5. The mica heater for preventing overheating according to claim 1, characterized in that: The top of the insulation sleeve (2) is movably fitted with an upper insulation cover (21), the bottom of the insulation sleeve (2) is movably fitted with a lower insulation cover (22), and the bottom of the lower insulation cover (22) is fixedly fitted with a bottom post (23).

6. The mica heater for preventing overheating according to claim 5, characterized in that: The bottom of the upper heat insulation cover (21) is provided with a plurality of connecting plates (24), one end of which is connected to the bottom of the inner wall of the mica heater (1).

7. The mica heater for preventing overheating according to claim 1, characterized in that: The side of the overheat protection mechanism (3) is evenly provided with multiple heat dissipation grooves (31), and the two ends of the rotating shaft (32) are movably connected to the two ends of the heat insulation sleeve (2).

8. The mica heater for preventing overheating according to claim 1, characterized in that: The insulation sleeve (2) has multiple mounting posts (34) distributed around its perimeter. One end of each ventilation fan (35) is mounted on one side of the mounting post (34). The side of the mounting post (34) is movably connected to the side of the overheat protection mechanism (3).

9. The mica heater for preventing overheating according to claim 1, characterized in that: The thermal sensing mechanism (4) is electrically connected to the sensor (41). A sensing line (42) is fixedly connected to the side of the sensor (41). A receiver (43) is fixedly connected to one end of the sensing line (42). The side of the receiver (43) is connected to the outside of the insulation sleeve (2).

10. The mica heater for preventing overheating according to claim 1, characterized in that: One end of the sliding frame (51) is slidably connected to the sliding base (5), and multiple ventilation slots (52) are evenly distributed on the side of the sliding frame (51). By sliding the sliding base (5) and the sliding frame (51) together, the sliding frame (51) is installed around the insulation sleeve (2), and multiple ventilation slots (52) are evenly distributed on the side of the sliding frame (51).

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