Dry-burn prevention temperature sensor and processing equipment thereof

Abstract

The application discloses a dry-burning prevention temperature sensor and a processing device thereof, relates to the technical field of dry-burning prevention temperature sensors, and comprises a protective heat shield, a temperature sensing cover plate is arranged at the lower end of the protective heat shield, a heat sensitive element is arranged in the temperature sensing cover plate, a wire is connected to the upper end of the heat sensitive element, a limiting end cover is arranged at the upper end of the protective heat shield, and a telescopic adjusting guide rod is arranged on the inner side of the limiting end cover; the temperature sensing cover plate and the limiting end cover are connected in a threaded mode between an outer thread and the protective heat shield. The dry-burning prevention temperature sensor can be prevented from being heated during use, overheat protection is convenient, the use effect of the dry-burning prevention temperature sensor is affected, meanwhile, during the spraying process of the heat-resistant material on the shell, the paint is prone to splashing or dripping, and it is difficult to perform the smearing and drying operation.

Description

Technical Field

[0001] This invention relates to the field of anti-dry-burning temperature sensor technology, specifically to an anti-dry-burning temperature sensor and its processing equipment. Background Technology

[0002] The anti-dry-burning temperature sensor is a safety device used to prevent equipment from overheating when there is no water or insufficient liquid. It is widely used in liquid heating equipment such as water heaters, electric kettles, coffee machines, and boilers. Its core function is to monitor the temperature of the heating area and automatically cut off the power supply when an abnormally high temperature is detected to prevent equipment damage or fire.

[0003] Compared with existing processing equipment, the following defects still exist: Existing anti-dry-burning temperature sensors may overheat during use due to poor heat resistance of the housing, making it difficult to protect against overheating and affecting the performance of the anti-dry-burning temperature sensor. At the same time, during the process of spraying heat-resistant materials onto the housing, paint is prone to splashing or dripping, making it difficult to smooth and dry. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-dry-burning temperature sensor and its processing equipment, which solves the following technical problems: Existing anti-dry-burning temperature sensors may overheat during use due to poor heat resistance of the housing, making it difficult to protect against overheating and affecting the performance of the anti-dry-burning temperature sensor. At the same time, during the process of spraying heat-resistant materials onto the housing, paint is prone to splashing or dripping, making it difficult to smooth and dry.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A dry-burning-proof temperature sensor includes: a protective heat insulation cover, a temperature sensing cover plate at the lower end of the protective heat insulation cover, a thermistor element inside the temperature sensing cover plate, a wire connected to the upper end of the thermistor element, a limit end cap at the upper end of the protective heat insulation cover, and a telescopically adjustable guide rod on the inner side of the limit end cap.

[0007] As a further aspect of the present invention: both the inner and outer surfaces of the temperature-sensing cover and the limiting end cover are provided with external threads, and both the temperature-sensing cover and the limiting end cover are connected to the protective heat insulation cover by means of threads through the external threads.

[0008] The wire welded to the upper end of the thermal element passes through the middle of the guide rod and extends upward. The lower end of the guide rod is provided with a limiting spring that engages with the temperature sensing cover plate, which is used to adjust the extension and retraction of the guide rod.

[0009] The inner side of the guide rod has multiple sets of structures that are nested and slidably connected to each other.

[0010] As a further aspect of the present invention: a protective frame is installed on the rear side of the inside of the spray box, an adjusting rod is provided on the upper side of the inside of the protective frame, and a first adjusting plate connected to the protective frame is provided at the lower end of the adjusting rod.

[0011] The front end of the first adjustment disc is provided with a first electric telescopic rod, the front end of the first electric telescopic rod is provided with a limit clamp, and the front surface of the limit clamp is provided with a rubber seal for limiting and engaging the protective heat insulation cover.

[0012] A second adjustment disc is provided at the right end of the interior of the spray box.

[0013] As a further aspect of the present invention: the adjusting rod and the first adjusting plate are connected by an engagement, and the first electric telescopic rod fixedly connected to the front end of the first adjusting plate forms a rotating structure on the protective frame through a built-in bearing;

[0014] The limiting clamp at the front end of the first electric telescopic rod is connected to the rubber seal by adhesive bonding, and a second electric telescopic rod is provided at a symmetrical position about the protective heat insulation cover.

[0015] As a further aspect of the present invention: a second connecting ring is connected to the left end of the second adjusting disc, a first connecting ring is provided on the left side of the second connecting ring, and a mating fastener is provided at the connection between the first connecting ring and the second connecting ring.

[0016] Both the first connecting ring and the second connecting ring are connected to the mating fastener by adjusting bolts using threads, which are used to combine the first connecting ring and the second connecting ring into a ring structure.

[0017] As a further aspect of the present invention: both the front and rear sides of the first connecting ring and the second connecting ring are provided with limiting grooves, and the outer side of the limiting grooves is provided with limiting wheels that are fixedly connected to the support leg frame.

[0018] The limiting wheel forms a sliding structure within the first connecting ring and the second connecting ring respectively through the limiting groove, which is used to limit the movement of the first connecting ring and the second connecting ring.

[0019] As a further aspect of the present invention: the support leg frame is arranged in three equal parts about the center point of the ring formed by the combination of the first connecting ring and the second connecting ring, and the included angle between the support leg frames is 120°, which is used to pull the first connecting ring and the second connecting ring outward and center them.

[0020] As a further aspect of the present invention: both the first connecting ring and the second connecting ring are connected to the second adjusting disk by meshing. The diameter of the second adjusting disk is smaller than the diameter of the combined annular structure of the first connecting ring and the second connecting ring, and is used to rotate the combined annular structure of the first connecting ring and the second connecting ring at a uniform speed.

[0021] As a further aspect of the present invention: the inner end of the first connecting ring is provided with a notched circular plate for shielding the sprayed material;

[0022] The left end of the notched circular plate is fixedly provided with auxiliary support frames on both the upper and lower sides, which are connected to the first connecting ring, for supporting and fixing the notched circular plate.

[0023] As a further embodiment of the present invention: a third electric telescopic rod is provided at the inner end of the second connecting ring, a support plate is installed at the inner end of the third electric telescopic rod, a storage box is provided on the upper side of the inner end of the support plate, and spray nozzles for spraying the outer surface of the protective heat insulation cover are equidistantly distributed at the left end of the storage box.

[0024] The lower left side of the support plate frame is provided with a scraper whose inner surface has the same curvature as the outer surface of the protective heat insulation cover, and the lateral distance of the scraper is greater than the lateral distance of the nozzle.

[0025] The beneficial effects of this invention are:

[0026] 1. The temperature sensing cover and the limiting end cover are both threadedly connected to the protective heat insulation cover, which allows for stable disassembly and installation of the entire protective heat insulation cover. With the combined structure, it can be cut off to prevent dry burning. The coating on the outer surface of the protective heat insulation cover makes the overall heat resistance of the protective heat insulation cover better and prevents it from overheating.

[0027] 2. The combination of the support legs and the third electric telescopic rod for spraying the outer surface of the protective heat insulation cover can increase the heat resistance. When the evenly distributed nozzles are opened to spray the protective heat insulation cover, the overflowing paint can be blocked by the circular plate with notches to avoid splashing. Afterwards, opening the third electric telescopic rod can extend and retract the support frame inward, and by rotating the protective heat insulation cover in the opposite direction, the sprayed paint can be evenly smoothed by the scraper. Attached Figure Description

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the overall structure of the connection between the guide rod and the limiting end cap of the present invention;

[0030] Figure 2 This is a front view cross-sectional structural diagram of the connection between the protective heat insulation cover and the limiting end cap of the present invention;

[0031] Figure 3 This is a front cross-sectional view of the connection between the spray box and the second adjusting plate of the present invention;

[0032] Figure 4 This is a schematic diagram of the overall structure of the connection between the first connecting ring and the second connecting ring of the present invention;

[0033] Figure 5 This is a side cross-sectional view of the connection between the spray box and the visual sealing door panel of the present invention;

[0034] Figure 6 This is a schematic diagram of the overall structure of the connection between the adjusting rod and the first adjusting disc of the present invention;

[0035] Figure 7 This is a top cross-sectional view of the connection between the spray box and the support leg frame of the present invention;

[0036] Figure 8 This is a schematic diagram of the overall structure of the connection between the storage tank and the nozzle of the present invention.

[0037] In the diagram: 1. Spraying box; 101. Protective frame; 1011. First servo motor; 1012. Adjusting rod; 1013. First adjusting disc; 1014. First electric telescopic rod; 1015. Limiting clamp; 1016. Rubber seal; 102. Fixed support frame; 103. Second servo motor; 104. Second adjusting disc; 105. Visual sealing door panel; 106. Quick-release connector; 107. Second electric telescopic rod; 2. Protective heat insulation cover; 201. Temperature sensing cover; 202. Thermosensitive... Components; 203, wire; 204, limiting spring; 205, guide rod; 206, limiting end cap; 2061, external thread; 3, support leg frame; 301, limiting wheel; 3011, limiting groove; 302, first connecting ring; 303, second connecting ring; 304, butt fastener; 305, adjusting bolt; 306, notched circular plate; 3061, auxiliary support frame; 4, third electric telescopic rod; 401, support plate frame; 402, storage box; 403, nozzle; 404, scraper. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1-8 As shown, the present invention is a temperature sensor for preventing dry burning and its processing equipment.

[0040] Example 1

[0041] Please see Figure 1 and Figure 2 In this invention, a technical solution is provided: a protective heat insulation cover 2, a temperature sensing cover 201 is provided at the lower end of the protective heat insulation cover 2, a thermal element 202 is provided inside the temperature sensing cover 201, a wire 203 is connected to the upper end of the thermal element 202, a limit end cap 206 is provided at the upper end of the protective heat insulation cover 2, and a telescopically adjustable guide rod 205 is provided on the inner side of the limit end cap 206.

[0042] Furthermore, both the inner and outer surfaces of the temperature-sensing cover 201 and the limiting end cover 206 are provided with external threads 2061, and both the temperature-sensing cover 201 and the limiting end cover 206 are connected to the protective heat insulation cover 2 by means of threads through the external threads 2061.

[0043] The wire 203 welded to the upper end of the thermal element 202 passes through the middle of the guide rod 205 and extends upward. The lower end of the guide rod 205 is provided with a limiting spring 204 that engages with the temperature sensing cover plate 201, which is used to adjust the extension and retraction of the guide rod 205.

[0044] The inner side of the guide rod 205 has multiple sets of structures that are nested and slidably connected to each other.

[0045] Specifically, the thermistor 202 and the wire 203 are connected by welding to achieve conductive transmission. When a pot is placed on the gas stove, the cookware will press against the temperature-sensing cover 201 of the temperature sensor. Since multiple structures are distributed on the inner side of the guide rod 205, they are nested and slidably connected to each other. The guide rod 205 forms an elastic telescopic structure within the temperature-sensing cover 201 through the limiting spring 204. Under the action of elasticity, the temperature-sensing cover 201 can be tightly attached to the bottom of the pot. When the gas stove is burning, the temperature-sensing cover 201 will directly sense the temperature of the bottom of the cookware. Then, the temperature is transmitted to the thermistor 202 through the temperature-sensing cover 201. When the pot is dry-burning, the temperature of the bottom of the pot will rise rapidly. When the temperature exceeds the specified limit, the high-temperature signal transmitted by the thermistor 202 will be converted into an electrical signal and transmitted to the gas stove through the wire 203 to automatically cut off the gas supply, thereby stopping heating and preventing dry burning.

[0046] Example 2

[0047] Please see Figures 3-7 In this invention, a technical solution is provided: a protective frame 101 is installed on the rear side of the inside of the spray box 1, an adjusting rod 1012 is provided on the upper side of the inside of the protective frame 101, and a first adjusting plate 1013 connected to the protective frame 101 is provided at the lower end of the adjusting rod 1012.

[0048] The front end of the first adjustment plate 1013 is provided with a first electric telescopic rod 1014, the front end of the first electric telescopic rod 1014 is provided with a limiting clamp 1015, and the front surface of the limiting clamp 1015 is provided with a rubber seal 1016 for limiting and engaging the protective heat insulation cover 2.

[0049] A second adjustment disc 104 is provided at the right end of the interior of the spray box 1.

[0050] Furthermore, the adjusting rod 1012 and the first adjusting plate 1013 are connected by meshing, and the first electric telescopic rod 1014, which is fixedly connected to the front end of the first adjusting plate 1013, forms a rotating structure on the protective frame 101 through the built-in bearing.

[0051] The limiting clamp 1015 at the front end of the first electric telescopic rod 1014 is connected to the rubber seal 1016 by adhesive bonding. The first electric telescopic rod 1014 is provided with a second electric telescopic rod 107 at a symmetrical position about the protective heat insulation cover 2.

[0052] The left end of the second adjusting plate 104 is connected to a second connecting ring 303, and a first connecting ring 302 is provided on the left side of the second connecting ring 303. A mating fastener 304 is provided at the connection between the first connecting ring 302 and the second connecting ring 303.

[0053] The first connecting ring 302 and the second connecting ring 303 are both connected to the mating fastener 304 by adjusting bolts 305 through threads, which are used to combine the first connecting ring 302 and the second connecting ring 303 into a ring structure.

[0054] Furthermore, the first connecting ring 302 and the second connecting ring 303 both have limiting grooves 3011 on their front and rear sides, and the limiting grooves 3011 are provided with limiting wheels 301 fixedly connected to the support leg frame 3 on their outer sides.

[0055] The limiting wheel 301 forms a sliding structure in the first connecting ring 302 and the second connecting ring 303 through the limiting groove 3011, which is used to limit the movement of the first connecting ring 302 and the second connecting ring 303.

[0056] Furthermore, the support leg 3 is arranged in three equal parts about the center point of the ring formed by the combination of the first connecting ring 302 and the second connecting ring 303, and the angle between the support leg 3 is 120°, which is used to pull the first connecting ring 302 and the second connecting ring 303 outward and center them.

[0057] Furthermore, both the first connecting ring 302 and the second connecting ring 303 are connected to the second adjusting disk 104 by meshing. The diameter of the second adjusting disk 104 is smaller than the diameter of the combined ring structure of the first connecting ring 302 and the second connecting ring 303, and is used to rotate the combined ring structure of the first connecting ring 302 and the second connecting ring 303 at a uniform speed.

[0058] Specifically, in conjunction with Embodiment 1, the first connecting ring 302 is first placed on the left side of the support leg 3. Then, the second connecting ring 303 is mated with the first connecting ring 302. An adjusting bolt 305 is then threaded through the mating fastener 304 and threadedly connected to both the first and second connecting rings 302 and 303, forming an integrated ring structure. A limiting wheel 301 is provided at the inner end of the support leg 3, and the limiting wheel 301 is positioned in the limiting groove 301. The first connecting ring 302 and the second connecting ring 303 form a close-fitting sliding connection, which can limit the integrated ring structure of the first connecting ring 302 and the second connecting ring 303. With the support leg 3 arranged in three equal parts about the center point of the integrated ring structure of the first connecting ring 302 and the second connecting ring 303, and the angle between the support leg 3 is 120°, it can effectively pull the integrated ring structure outward, preventing the first connecting ring 302 and the second connecting ring 303 from falling down as a whole and affecting the subsequent operation.

[0059] At this point, open the visual sealing door 105 and engage the protective heat insulation cover 2 to be processed inside the limiting clamp 1015 using the rubber seal 1016. When closing the visual sealing door 105, secure it with the quick-release connector 106. Then, extend the first electric telescopic rod 1014 and the second electric telescopic rod 107 inwards to clamp the protective heat insulation cover 2 at both ends. The cross-sectional dimensions of the limiting clamp 1015 are the same as those of the protective heat insulation cover 2. This arrangement prevents paint from entering the inner wall of the protective heat insulation cover 2. Adjustment settings are available. The rod 1012 and the first adjusting plate 1013 are connected by meshing (using a worm gear structure). When the first servo motor 1011 installed on the left end of the protective frame 101 is opened and the adjusting rod 1012 is rotated, it can drive the first adjusting plate 1013 to rotate synchronously, thereby causing the first electric telescopic rod 1014 to rotate isocentrically inside the protective frame 101 through the built-in bearing, so as to drive the protective heat insulation cover 2 to rotate in a centered manner; the quick-release connecting buckle 106 is a Hafele H1001; and the surface of the visual sealing door panel 105 is made of high-definition glass.

[0060] Example 3

[0061] Please see Figure 3 , Figure 5 , Figure 7 and Figure 8 In this invention, a technical solution is provided: the inner end of the first connecting ring 302 is provided with a notched circular plate 306 for shielding the sprayed material;

[0062] The left end of the notched circular plate 306 is fixedly provided with auxiliary support frames 3061 on both the upper and lower sides, which are connected to the first connecting ring 302, for supporting and fixing the notched circular plate 306.

[0063] Furthermore, a third electric telescopic rod 4 is provided at the inner end of the second connecting ring 303, a support plate frame 401 is installed at the inner end of the third electric telescopic rod 4, a storage box 402 is provided on the upper side of the inner end of the support plate frame 401, and spray nozzles 403 for spraying the outer surface of the protective heat insulation cover 2 are equidistantly distributed at the left end of the storage box 402.

[0064] A scraper 404 with the same curvature on its inner surface as the outer surface of the protective heat insulation cover 2 is provided on the lower left side of the support plate frame 401. The lateral distance of the scraper 404 is greater than the lateral distance of the nozzle 403.

[0065] Specifically, in conjunction with Embodiment 1 and Embodiment 2, when the second servo motor 103 installed at the rear end of the fixed support frame 102 rotates the second adjustment disk 104, it can drive the integrated ring structure of the first connecting ring 302 and the second connecting ring 303 to rotate synchronously. This allows the integrated ring structure of the first connecting ring 302 and the second connecting ring 303 to rotate within the limiting wheel 301 through the limiting groove 3011, enabling the integrated ring structure to be accurately limited in rotation. At this time, after the spray nozzle 403 is opened to spray the paint in the storage box 402 onto the outer surface of the protective heat insulation cover 2, the third electric telescopic rod 4 is opened to move the support plate frame 401 inward and make the inner surface of the scraper 404 tightly adhere to the outer surface of the protective heat insulation cover 2. This allows for even scraping and smoothing operations after spraying the refractory and heat-resistant material. Here, the lateral distance of the scraper 404 is greater than the lateral distance of the spray nozzle 403, which can prevent the spray nozzle 403 from being too close to the outer surface of the protective heat insulation cover 2, resulting in paint splashing and wasting resources.

[0066] Additionally, a notched circular plate 306 is fixedly installed on the inner end of the first connecting ring 302 via an auxiliary support frame 3061. Before use, the inner wall of the notched circular plate 306 is sandblasted to increase the roughness of the inner wall of the notched circular plate 306, which can prevent the possibility of material dripping or leakage when spraying refractory and heat-resistant materials. The notched circular plate 306 is set to be two-thirds of a circle, and the two ends extend inward to form a hollow cylindrical cut edge, which can effectively collect the splashed paint.

[0067] During the spraying and smoothing operations, the integrated ring structure of the first connecting ring 302 and the second connecting ring 303 is rotated to the left, and the entire protective heat insulation cover 2 is rotated to the right under the action of the first adjusting plate 1013. The interaction between the two enables the refractory and heat-resistant material to be effectively sprayed and smoothed, making the material more uniform.

[0068] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A processing device for an anti-dry-burning temperature sensor, characterized in that, The spray box (1) is included. A protective frame (101) is installed on the rear side of the inside of the spray box (1). An adjusting rod (1012) is provided on the upper side of the inside of the protective frame (101). A first adjusting plate (1013) connected to the protective frame (101) is provided at the lower end of the adjusting rod (1012). The first adjustment plate (1013) is provided with a first electric telescopic rod (1014) at the front end, and a limiting clamp (1015) is provided at the front end of the first electric telescopic rod (1014). The front surface of the limiting clamp (1015) is provided with a rubber seal (1016) for limiting and engaging the protective heat insulation cover (2). A second adjustment plate (104) is provided at the right end of the interior of the spray box (1). The left end of the second adjusting plate (104) is connected to a second connecting ring (303), and a first connecting ring (302) is provided on the left side of the second connecting ring (303). A mating fastener (304) is provided at the connection between the first connecting ring (302) and the second connecting ring (303). The first connecting ring (302) is threadedly connected to the mating fastener (304) via an adjusting bolt (305), and the second connecting ring (303) is threadedly connected to the mating fastener (304) via an adjusting bolt (305), for combining the first connecting ring (302) and the second connecting ring (303) into a ring structure; The first connecting ring (302) and the second connecting ring (303) have limiting grooves (3011) on both the front and rear sides inside. The limiting grooves (3011) are provided with limiting wheels (301) that are fixedly connected to the support leg frame (3) on the outer side. The limiting wheel (301) forms a sliding structure in the first connecting ring (302) and the second connecting ring (303) respectively through the limiting groove (3011), which is used to limit the movement of the first connecting ring (302) and the second connecting ring (303); The first connecting ring (302) is connected to the second adjusting disc (104) by an engagement, and the second connecting ring (303) is connected to the second adjusting disc (104) by an engagement. The two adjusting discs (104) are connected in a manner such that the diameter of the second adjusting disc (104) is smaller than the diameter of the combined ring structure of the first connecting ring (302) and the second connecting ring (303), and is used to rotate the combined ring structure of the first connecting ring (302) and the second connecting ring (303) at a constant speed. The inner end of the first connecting ring (302) is provided with a notched circular plate (306) for shielding the sprayed material; The notched circular plate (306) has auxiliary support frames (3061) fixedly installed on both the upper and lower sides of its left end, which are connected to the first connecting ring (302) for supporting and fixing the notched circular plate (306); The inner end of the second connecting ring (303) is provided with a third electric telescopic rod (4), the inner end of the third electric telescopic rod (4) is provided with a support plate frame (401), the upper side of the inner end of the support plate frame (401) is provided with a storage box (402), and the left end of the storage box (402) is provided with spray nozzles (403) for spraying the outer surface of the protective heat insulation cover (2) at equal intervals. The lower left side of the support plate frame (401) is provided with a scraper (404) whose inner surface has the same curvature as the outer surface of the protective heat insulation cover (2). The lateral distance of the scraper (404) is greater than the lateral distance of the nozzle (403).

2. The processing equipment for an anti-dry-burning temperature sensor according to claim 1, characterized in that, The adjusting rod (1012) and the first adjusting plate (1013) are connected by meshing. The first electric telescopic rod (1014) fixedly connected to the front end of the first adjusting plate (1013) forms a rotating structure on the protective frame (101) through the built-in bearing. The limiting clamp (1015) at the front end of the first electric telescopic rod (1014) is connected to the rubber seal (1016) by adhesive bonding. The first electric telescopic rod (1014) is provided with a second electric telescopic rod (107) at a symmetrical position with respect to the protective heat insulation cover (2).

3. The processing equipment for an anti-dry-burning temperature sensor according to claim 1, characterized in that, The support leg (3) is arranged in three equal parts about the center point of the ring after the first connecting ring (302) and the second connecting ring (303) are combined, and the angle between the support leg (3) is 120°, which is used to pull the first connecting ring (302) and the second connecting ring (303) outward and center them.

4. A temperature sensor with anti-dry-burning feature, characterized in that, The device is manufactured using the anti-dry-burning temperature sensor processing equipment as described in claim 1. It includes a protective heat insulation cover (2), a temperature sensing cover plate (201) is provided at the lower end of the protective heat insulation cover (2), a thermistor (202) is provided inside the temperature sensing cover plate (201), a wire (203) is connected to the upper end of the thermistor (202), a limit end cap (206) is provided at the upper end of the protective heat insulation cover (2), and a telescopically adjustable guide rod (205) is provided on the inner side of the limit end cap (206).

5. The anti-dry-burning temperature sensor according to claim 4, characterized in that, The inner and outer surfaces of the temperature-sensing cover (201) and the limiting end cover (206) are both provided with external threads (2061). The temperature-sensing cover (201) is threadedly connected to the protective heat insulation cover (2) through the external threads (2061), and the limiting end cover (206) is threadedly connected to the protective heat insulation cover (2) through the external threads (2061).

Images