Temperature control system for an explosion-proof electric heater

Abstract

The application relates to the technical field of electric heaters, in particular to a temperature control system of an explosion-proof electric heater, which comprises a cylinder body, a butt joint structure, a mounting structure, a heating structure, a sealing structure and a supporting structure. The butt joint structure is arranged to facilitate the butt joint of an external pipeline and the outlet of the cylinder body, and the operation efficiency is high; the mounting structure is arranged to facilitate the mounting of the electric heater at a specified position, the bolts are prevented from being repeatedly disassembled, and the electric heater can be flexibly adjusted in the horizontal direction; the heating structure is used in cooperation with the supporting structure, the end part of an electric heating pipe can be supported when the electric heating pipe is inserted, the end part of the electric heating pipe is prevented from being rubbed against the inner wall of the cylinder body under the action of gravity, the electric heating pipe can be more smoothly moved in the cylinder body, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of electric heater technology, specifically a temperature control system for an explosion-proof electric heater. Background Technology

[0002] An explosion-proof electric heater is an electric heating device with explosion-proof function. It is mainly used for heating operations in hazardous environments such as those containing flammable and explosive gases and dust. Its principle is to use electrical energy or other heat sources to transfer heat to the medium such as air, process water or heat transfer oil in the pipeline through the heating element, so as to raise its temperature to meet the heating requirements of specific processes or environments. It is widely used in high-precision temperature control scenarios, such as electric heating ducts, reaction vessels, and storage tank insulation.

[0003] Traditional electric heaters require operators to first insert the heating element into the inner cavity of the outer shell during assembly, and then tighten the tube plate at the end of the heating element to the flange on the shell with bolts. However, due to the large length and weight of the heating element, the end of the heating element is prone to contact and friction with the inner wall of the outer shell under the action of gravity when pushing the heating element in, which can easily cause damage to the heating element and scratches on the inner wall of the outer shell. Because it usually requires multiple people to lift it or to use a crane to keep the heating element in a horizontal position, the operation process is cumbersome and impractical. When installing an electric heater, the operator usually uses bolts to directly fix the support legs at the bottom of the casing to the ground. When it is necessary to disassemble and repair the electric heater, the bolts need to be repeatedly disassembled, which is inefficient. In addition, since the two support legs at the bottom of the casing are the same length, the whole unit is prone to tilting when the ground is uneven, making it difficult to connect with external pipes. The operation process is cumbersome. When connecting the outlet of the electric heater to the external pipeline, the two are usually directly connected by a flange. Therefore, when it is necessary to disassemble or clean the pipeline, the bolts need to be repeatedly disassembled and tightened, resulting in low disassembly efficiency and poor flexibility. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a temperature control system for an explosion-proof electric heater.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a temperature control system for an explosion-proof electric heater, comprising a cylinder, a heating structure disposed on the cylinder, a sealing structure installed on the cylinder, and a support structure connected to the sealing structure; The sealing structure includes an annular seat, and the end of the cylinder is fixedly connected to the annular seat. The support structure includes an mounting ring and three mounting blocks fixedly connected to the mounting ring. The inner side of the annular seat is fitted with the mounting ring. A connecting strip is slidably connected inside the mounting block. One end of the connecting strip is fixedly connected to an arc-shaped plate, and the other end of the connecting strip is fixedly connected to a driving block. A roller is rotatably connected to the driving block. A second baffle is provided on the side of the mounting ring near the outer side. The second baffle cooperates with the heating structure. The heating structure includes a tube sheet and an electric heating tube fixedly connected to the tube sheet. The tube sheet is connected to the end of the cylinder, and a second baffle is fixedly connected to the end of the electric heating tube. The side of the second baffle near the cylinder abuts against the mounting block.

[0006] Specifically, a second spring is fixedly connected between the inner wall of the drive block and the mounting block, and an inclined surface is provided on the side of the drive block near the cylinder. The inner wall of the annular seat and the inclined surface provided on the drive block are in sliding fit.

[0007] Specifically, three connecting blocks are fixedly connected to the side of the mounting ring facing away from the mounting block, two reinforcing rods are fixedly connected to the back of the arc plate, the reinforcing rods are slidably connected to the connecting blocks, a rotating roller is rotatably connected to the side of the connecting block near the inner wall of the cylinder, three sliding grooves are opened on the inner side of the cylinder, and the three rotating rollers are respectively tumbled between adjacent sliding grooves.

[0008] Specifically, a retaining ring is abutted on one side of the annular seat near the outer side, a first rubber ring is engaged between the retaining ring and the annular seat, and a second rubber ring is fixedly connected to the other side of the retaining ring.

[0009] Specifically, a plug plate is fixedly connected to the side of the retaining ring near the first rubber ring. The plug plate engages with a groove on the annular seat. A retaining strip is slidably connected to the annular seat. An attachment lug is fixedly connected to the top of the retaining strip. The attachment lug is slidably connected to the annular seat. A third tension spring is fixedly connected between the bottom surface of the attachment lug and the inner wall of the annular seat. The bottom of the retaining strip engages with a hole at the center of the plug plate.

[0010] Specifically, the annular seat has a plurality of second bolts arranged in a circular array, and the annular seat is fixedly connected to the tube sheet by the second bolts. The side of the tube sheet near the annular seat abuts against the second rubber ring.

[0011] Specifically, a heat insulation plate is fixedly connected to the side of the tube sheet opposite to the annular seat. The heat insulation plate is fixedly connected to the heating tube. A temperature probe is fixedly connected to the center of the heat insulation plate and penetrates through the tube sheet. An explosion-proof box is fixedly connected to the end of the heating tube. The end of the temperature probe is located inside the explosion-proof box. Three first baffles are fixedly connected to the heating tube.

[0012] Specifically, the cylinder is equipped with a docking structure, which includes an outlet and a drive ring threaded onto the outlet. The outlet is fixedly connected to the outer wall of the cylinder. A retaining ring is fixedly connected to the drive ring. Three guide strips are fixedly connected to the inner side of the retaining ring. A slide bar is slidably connected to the guide strip. The slide bar is slidably connected to the bottom surface of the drive ring. A first spring is fixedly connected between the inner side of the slide bar and the retaining ring. A retaining strip is fixedly connected to one end of the slide bar near the outer side. The top surface of the outlet abuts against the connecting pipe. The top end of the retaining strip abuts against the connecting pipe.

[0013] Specifically, the bottom of the cylinder is provided with an installation structure, which includes mounting legs and mating grooves on the mounting legs. Two mounting legs are fixedly connected to the bottom of the cylinder. The bottom of the mounting legs is provided with a base frame. Both ends of the base frame are fixedly connected with first bolts. The bottom of the first bolts is fixedly connected with an adjusting plate. Two connecting rods are provided between the two base frames. The base frames and the connecting rods are slidably connected. A second tension spring is fixedly connected between the two base frames. One of the connecting rods passes through the second tension spring. The other connecting rod has multiple insertion holes. One end of each of the two base frames is slidably connected with a pin. The pin and the base frame are fixedly connected with a first tension spring. The pin and the corresponding insertion hole are engaged with each other.

[0014] Specifically, a lead screw is rotatably connected inside the base frame, and a rotating seat is threaded to each end of the lead screw. A guide rod is fixedly connected inside the base frame, and the rotating seat and the guide rod are slidably connected. A limit rod is rotatably connected to the rotating seat, and a torsion spring is fixedly connected between the side of the limit rod and the inner wall of the rotating seat. The top surface of the base frame abuts against the bottom surface of the mounting leg. A nut is threadedly connected to the limit rod, and the bottom surface of the nut abuts against the mounting leg.

[0015] The beneficial effects of this invention are: (1) The temperature control system of the explosion-proof electric heater described in this invention has a docking structure installed on the cylinder. The docking structure facilitates the quick docking of external pipes with the outlet of the cylinder, resulting in high operating efficiency.

[0016] (2) The temperature control system of the explosion-proof electric heater described in this invention has an installation structure at the bottom of the cylinder. The installation structure facilitates the quick installation of the electric heater in a designated position, avoids repeated disassembly of bolts, and facilitates flexible adjustment of the electric heater's level.

[0017] (3) The temperature control system of the explosion-proof electric heater described in this invention has a sealing structure installed on the cylinder and a heating structure provided on the cylinder. The heating structure is used in conjunction with the support structure to facilitate the support of the end of the electric heating tube when it is inserted, so as to avoid friction between the end of the tube and the inner wall of the cylinder under the action of gravity, making the electric heating tube move more smoothly inside the cylinder and improving the operating efficiency. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a temperature control system for an explosion-proof electric heater provided by the present invention; Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A. Figure 3 This is a schematic diagram of the connection structure between the base frame and the connecting rod of the present invention; Figure 4 This is a schematic diagram of the connection structure between the tube sheet and the heating element of the present invention; Figure 5 for Figure 4 The diagram shown is an enlarged view of the structure of section B. Figure 6 for Figure 5 The diagram shows an enlarged view of section C. Figure 7 for Figure 5 The diagram shown is an enlarged view of the structure of part D. Figure 8 for Figure 5 The diagram shown is an enlarged view of the structure of part E. Figure 9 This is a schematic diagram of the connection structure between the cylinder and the outlet of the present invention; Figure 10 This is a schematic diagram of the connection structure between the mounting ring and the mounting block of the present invention.

[0020] In the diagram: 1. Cylinder body; 2. Docking structure; 201. Outlet; 202. Drive ring; 203. Fixing ring; 204. Guide bar; 205. Sliding bar; 206. First spring; 207. Fixing bar; 208. Docking tube; 3. Mounting structure; 301. Mounting leg; 302. Docking groove; 303. Base frame; 304. First bolt; 305. Adjusting plate; 306. Lead screw; 307. Guide rod; 308. Rotating seat; 309. Limiting rod; 310. Stop; 311. Torsion spring; 312. Connecting rod; 313. Insertion hole; 314. Pin; 315. First tension spring; 316. Second tension spring; 4. Heating structure; 401. Tube sheet; 4 02. Heating element; 403. Insulation plate; 404. Explosion-proof box; 405. First baffle plate; 406. Temperature probe; 5. Sealing structure; 501. Annular seat; 502. Locking strip; 503. Lug; 504. Third tension spring; 505. Retaining ring; 506. Insert plate; 507. First rubber ring; 508. Second rubber ring; 509. Second bolt; 6. Support structure; 601. Mounting ring; 602. Mounting block; 603. Connecting strip; 604. Arc plate; 605. Drive block; 606. Second spring; 607. Roller; 608. Connecting block; 609. Reinforcing rod; 610. Rotating roller; 611. Second baffle plate; 612. Slide groove. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 , Figures 7-10As shown, the temperature control system for an explosion-proof electric heater according to the present invention includes a cylinder 1, a heating structure 4 disposed on the cylinder 1, a sealing structure 5 installed on the cylinder 1, and a support structure 6 connected to the sealing structure 5; the sealing structure 5 includes an annular seat 501, the annular seat 501 is fixedly connected to the end of the cylinder 1, a retaining ring 505 abuts against the outer side of the annular seat 501, a first rubber ring 507 is engaged between the retaining ring 505 and the annular seat 501, and a second rubber ring is fixedly connected to the other side of the retaining ring 505. 508. A retaining plate 506 is fixedly connected to the side of the retaining ring 505 near the first rubber ring 507. The retaining plate 506 engages with a groove on the annular seat 501. A retaining strip 502 is slidably connected to the annular seat 501. An attachment lug 503 is fixedly connected to the top of the retaining strip 502. The attachment lug 503 is slidably connected to the annular seat 501. A third tension spring 504 is fixedly connected between the bottom surface of the attachment lug 503 and the inner wall of the annular seat 501. The bottom of the retaining strip 502 engages with a hole at the center of the retaining plate 506. Next, pull the lug 503 outward. The lug 503 causes the "T"-shaped retaining strip 502 to slide outward, stretching the third tension spring 504 until the bottom of the retaining strip 502 no longer engages with the hole in the center of the insert plate 506. At this point, the retaining ring 505 and the insert plate 506 can be quickly separated from the annular seat 501. Once the retaining ring 505 is removed, it no longer obstructs the mounting ring 601, making it easier to remove the mounting ring 601 and related parts from the inner cavity of the annular seat 501. This facilitates subsequent maintenance and replacement, offering high flexibility. The annular seat 501 has multiple circumferential arrays of... Two bolts 509 are used to fix the annular seat 501 and the tube sheet 401. The side of the tube sheet 401 near the annular seat 501 abuts against the second rubber ring 508. By inserting multiple second bolts 509 into the pre-drilled holes on the annular seat 501 and tightening the nuts, the tube sheet 401 and the annular seat 501 are fixed together, and the heating element 402 is completely installed inside the cylinder 1. The first rubber ring 507 and the second rubber ring 508 ensure the sealing of the connection between the tube sheet 401 and the annular seat 501, making the operation simple.

[0023] Specifically, such as Figure 5 and Figures 7-10As shown, the support structure 6 includes a mounting ring 601 and three mounting blocks 602 fixedly connected to the mounting ring 601. The mounting ring 601 fits inside the annular seat 501. A connecting strip 603 is slidably connected inside the mounting block 602. One end of the connecting strip 603 is fixedly connected to an arc-shaped plate 604, and the other end of the connecting strip 603 is fixedly connected to a driving block 605. A second spring 606 is fixedly connected between the driving block 605 and the inner wall of the mounting block 602. An inclined surface is formed on the side of the driving block 605 near the cylinder 1. The inner wall of the annular seat 501 and the driving block 605 are connected... The inclined surfaces slide together, causing the drive block 605 and connecting strip 603 to slide upwards. Simultaneously, the drive block 605 compresses the second spring 606, and the three connecting strips 603 synchronously move the arc-shaped plate 604 towards the center. The three arc-shaped plates 604, arranged in a circular array, then cooperate and clamp the heating element 402. The drive block 605 moves into the interior of the slide groove 612. At this point, the mounting ring 601 facilitates the heating element 402 forming a single unit, and the heating element 402 is fixed at the center of the mounting ring 601, ensuring that the heating element 402 remains at the center of the cylinder 1, facilitating subsequent rapid pushing of the heating element 402. The heating element 402 is inserted into the cylinder 1, avoiding friction between its end and the inner wall of the cylinder 1 under gravity, thus improving flexibility. A roller 607 is rotatably connected to the drive block 605. A second baffle 611 is provided on the outer side of the mounting ring 601, which cooperates with the heating structure 4. Three connecting blocks 608 are fixedly connected to the side of the mounting ring 601 opposite to the mounting block 602. Two reinforcing rods 609 are fixedly connected to the back of the arc-shaped plate 604, and the reinforcing rods 609 are slidably connected to the connecting blocks 608. The connecting blocks 608 are located near the cylinder. A rotating roller 610 is rotatably connected to one side of the inner wall of the cylinder 1. Three sliding grooves 612 are opened on the inner side of the cylinder 1. The three rotating rollers 610 are respectively rolled between adjacent sliding grooves 612. The second baffle plate 611 pushes the adjacent mounting block 602 and mounting ring 601. The mounting ring 601 drives the three connecting blocks 608 to slide along the sliding grooves 612 into the cylinder 1. The rotating roller 610 rotating at the bottom of the connecting block 608 rolls inside the sliding grooves 612, which reduces the friction between the connecting block 608 and the sliding grooves 612, which is conducive to smoothly pushing the heating tube 402 into the cylinder 1. The setting of the reinforcing rod 609 improves the stability.

[0024] Specifically, such as Figure 1 , Figure 4 , Figure 5 Figure 8 and Figure 10As shown, the heating structure 4 includes a tube sheet 401 and an electric heating tube 402 fixedly connected to the tube sheet 401. The tube sheet 401 is connected to the end of the cylinder 1, and a second baffle plate 611 is fixedly connected to the end of the electric heating tube 402. The side of the second baffle plate 611 near the cylinder 1 abuts against the mounting block 602. The operator holds the explosion-proof box 404 with one hand and holds the center of the electric heating tube 402 with the other hand. Then, the electric heating tube 402 is lifted and its tail is aligned with the mounting ring 601 at the port of the cylinder 1. Then, the tail of the electric heating tube 402 is inserted through the center of the mounting ring 601 to facilitate the subsequent installation of the electric heating tube 402. The tube sheet 401 is located away from the annular seat 501. A heat insulation plate 403 is fixedly connected to one side of the cylinder 1. A temperature probe 406 installed at the center of the heat insulation plate 403 can detect the temperature inside the cylinder 1 in real time. The heat insulation plate 403 is fixedly connected to the heating tube 402. The temperature probe 406 is fixedly connected at the center of the heat insulation plate 403 and penetrates through the tube sheet 401. An explosion-proof box 404 is fixedly connected to the end of the heating tube 402. The end of the temperature probe 406 is located inside the explosion-proof box 404. Three first baffles 405 are fixedly connected to the heating tube 402. The first baffles 405 fixed to the heating tube 402 can guide the flow of the medium and prolong the residence time of the medium in the inner cavity of the cylinder 1, thereby fully heating the medium.

[0025] Specifically, such as Figure 1 , Figure 6 and Figure 9As shown, a docking structure 2 is installed on the cylinder 1. The docking structure 2 includes an outlet 201 and a drive ring 202 threadedly connected to the outlet 201. The outlet 201 is fixedly connected to the outer wall of the cylinder 1. Finally, the connecting pipe 208 is installed on the outlet 201. Simply align the bottom surface of the connecting pipe 208 with the outlet 201 and press it down. The bottom surface of the connecting pipe 208 slides against the inclined surface on the fixing strip 207, causing the three fixing strips 207 to move outward until they are no longer obstructing the downward movement of the connecting pipe 208. A fixing ring 203 is fixedly connected to the drive ring 202. Three guide strips 204 are fixedly connected to the inner side of the fixing ring 203. A sliding strip 205 is slidably connected to the guide strip 204. The sliding strip 205 is slidably connected to the bottom surface of the drive ring 202. The inner side of the sliding strip 205 is slidably connected to the bottom surface of the drive ring 202. A first spring 206 is fixedly connected between the fixing rings 203. A fixing strip 207 is fixedly connected to one end of the slide bar 205 near the outer side. The top surface of the outlet 201 abuts against the connecting pipe 208. The top end of the fixing strip 207 abuts against the connecting pipe 208. When the connecting pipe 208 and the outlet 201 abut against each other, the slide bar 205, under the reset action of the first spring 206, drives the fixing strip 207 to move along the guide bar 204 towards the initial position until the top end of the fixing strip 207 abuts against the outer wall of the connecting pipe 208. Then, the fixing ring 203 is rotated by pinching the fixing strip 207. The fixing ring 203 drives the drive ring 202 to rotate. Since the drive ring 202 is threadedly connected to the outlet 201, the three fixing strips 207 are driven to clamp the connecting pipe 208. At this time, the quick installation of the connecting pipe 208 is completed, and the operation efficiency is high.

[0026] Specifically, such as Figures 1-5As shown, the bottom of the cylinder 1 is provided with an installation structure 3. The installation structure 3 includes installation legs 301 and mating grooves 302 formed on the installation legs 301. Two installation legs 301 are fixedly connected to the bottom of the cylinder 1. A base frame 303 is provided at the bottom of the installation legs 301. First bolts 304 are fixedly connected to both ends of the base frame 303. An adjusting plate 305 is fixedly connected to the bottom of the first bolts 304. Two connecting rods 312 are provided between the two base frames 303. The base frames 303 and the connecting rods 312 are slidably connected. A second tension spring 316 is fixedly connected between the two base frames 303. One of the connecting rods 312 passes through the second tension spring 316. The other connecting rod 312 has multiple insertion holes 313. One end of each of the two base frames 303 is slidably connected to a pin 314. A first tension spring 315 is fixedly connected between the pin 314 and the base frame 303. The pin 314 engages with the corresponding insertion hole 313. After assembling the heating element 402 and the cylinder 1, the cylinder 1 is installed in the designated position. First, adjust the distance between the two base frames 303 according to the distance between the two mounting legs 301. Simply pull down one of the pins 314 and pull the first tension spring 315 to slide the pin 314 out of the insertion hole 313. Under the reset action of the second tension spring 316, the base frame 303 moves along the connecting rod. Rod 312 slides towards another base frame 303 until the distance between the two base frames 303 is adjusted to a suitable level. The distance between the adjusting plate 305 and the base frame 303 can be adjusted by the first bolt 304 to ensure that the cylinder 1 remains horizontal. A lead screw 306 is rotatably connected inside the base frame 303. A rotating seat 308 is threaded to each end of the lead screw 306. A guide rod 307 is fixedly connected inside the base frame 303. The rotating seat 308 is slidably connected to the guide rod 307. A limit rod 309 is rotatably connected to the rotating seat 308. A torsion spring 311 is fixedly connected between the side of the limit rod 309 and the inner wall of the rotating seat 308. The top surface of the frame 303 abuts against the bottom surface of the mounting leg 301. A stop 310 is threaded onto the limiting rod 309. The bottom surface of the stop 310 abuts against the mounting leg 301. Then, the mounting leg 301 at the bottom of the cylinder 1 is placed between the two base frames 303. Under the force of the torsion spring 311, the limiting rod 309 rotates to the inside of the docking groove 302. At this time, the bottom of the stop 310 abuts against the outer wall of the mounting leg 301. Then, the lead screw 306 is rotated. The lead screw 306 drives the rotating seat 308 to slide along the guide rod 307. At the same time, the rotating seat 308 drives the limiting rod 309 to press against the inner wall of the docking groove 302, further fixing the mounting leg 301 and improving its firmness.

[0027] In use, the operator holds the explosion-proof box 404 with one hand and holds the center of the heating tube 402 with the other hand. Then, the heating tube 402 is lifted and its tail is aligned with the mounting ring 601 at the port of the cylinder 1. The tail of the heating tube 402 is then inserted through the center of the mounting ring 601 to facilitate subsequent installation of the heating tube 402. The temperature probe 406 installed at the center of the heat insulation plate 403 can detect the temperature inside the cylinder 1 in real time, and the first baffle 405 fixed on the heating tube 402 can guide the flow of the medium and prolong the residence time of the medium in the inner cavity of the cylinder 1, thereby fully heating the medium.

[0028] The heating element 402 is inserted into the cylinder 1. When the second baffle 611 at the end of the heating element 402 abuts against the mounting block 602 on the mounting ring 601, the tail end of the heating element 402 completely penetrates the mounting ring 601. The heating element 402 continues to be pushed into the cylinder 1, while the second baffle 611 pushes the adjacent mounting block 602 and the mounting ring 601. The mounting ring 601 drives the three connecting blocks 608 to slide along the groove 612 into the cylinder 1, and the rotating roller 610 at the bottom of the connecting block 608 rotates in the groove 612. The internal rolling mechanism reduces the friction between the connecting block 608 and the slide groove 612, facilitating the smooth pushing of the heating element 402 into the cylinder 1. The reinforcing rod 609 improves stability. Simultaneously, as the mounting ring 601 moves into the cylinder 1, the mounting block 602 drives the connecting strip 603 to move inwards. The connecting strip 603 then drives the driving block 605. Meanwhile, the edge of the inner wall of the annular seat 501 slides against the inclined surface on the driving block 605, causing the driving block 605 and the connecting strip 603 to move upwards. As the cylinder slides, the drive block 605 compresses the second spring 606, and the three connecting bars 603 synchronously drive the arc-shaped plate 604 to move towards the center position. The three arc-shaped plates 604, arranged in a circular array, cooperate and clamp the heating element 402. The drive block 605 moves into the interior of the slide groove 612. At this point, the mounting ring 601 facilitates the heating element 402 forming a single unit, and the heating element 402 is fixed at the center of the mounting ring 601, ensuring that the heating element 402 is always at the center of the cylinder 1, facilitating subsequent rapid installation of the heating element 402. Pushing the heating element 402 into the cylinder 1 avoids friction between the end of the heating element 402 and the inner wall of the cylinder 1 under gravity, improving flexibility. Then, the heating element 402 continues to be pushed into the cylinder 1. At this time, the roller 607 at the bottom of the drive block 605 rolls in the groove 612, avoiding the problem of the drive block 605 scratching the inner wall of the groove 612. At the same time, the setting of the roller 607 and the rotating roller 610 avoids the mounting ring 601 from directly contacting the inner wall of the cylinder 1, changing sliding to rolling, so that the heating element 402 can be pushed into the cylinder 1 more smoothly.

[0029] When the heating element 402 is fully pushed into the cylinder 1, the tube plate 401 abuts against the second rubber ring 508. Then, multiple second bolts 509 are inserted into the pre-drilled holes on the annular seat 501 and the nuts are tightened, thus fixing the tube plate 401 to the annular seat 501. The heating element 402 is then fully installed inside the cylinder 1. The first rubber ring 507 and the second rubber ring 508 ensure the sealing of the connection between the tube plate 401 and the annular seat 501, making the operation simple.

[0030] When it is necessary to repair the mounting ring 601 or remove the heating element 402, simply remove the multiple second bolts 509 in sequence, and then pull the heating element 402 outward. At this time, the mounting ring 601 is still fixed to the heating element 402. Then, the heating element 402 drives the mounting ring 601 to move towards the opening of the cylinder 1. When the mounting ring 601 drives the drive block 605 to move into the inner cavity of the annular seat 501, the three arc-shaped plates 604 move outward simultaneously under the reset action of the second spring 606, and no longer clamp the heating element 402. At this time, the mounting ring 601 and the heating element 402 are then locked together. 02 Separate from each other to facilitate the removal of the heating element 402. Then pull the attached ear 503 outward. The attached ear 503 drives the "T"-shaped retaining strip 502 to slide outward and stretch the third tension spring 504 until the bottom of the retaining strip 502 is no longer engaged with the hole in the center of the insert plate 506. At this time, the retaining ring 505 and the insert plate 506 can be quickly separated from the annular seat 501. After the retaining ring 505 is removed, it no longer obstructs the mounting ring 601, thus facilitating the removal of the mounting ring 601 and related parts from the inner cavity of the annular seat 501. This facilitates subsequent maintenance and replacement and provides high flexibility.

[0031] After assembling the heating element 402 with the cylinder 1, install the cylinder 1 in the designated position. First, adjust the distance between the two base frames 303 according to the distance between the two mounting legs 301. Simply pull down one of the pins 314 and pull the first tension spring 315 to make the pin 314 slide out of the insertion hole 313. Under the reset action of the second tension spring 316, the base frame 303 slides along the connecting rod 312 towards the other base frame 303 until the distance between the two base frames 303 is adjusted to a suitable level. The adjusting plate 305 can be adjusted with the first bolt 304. The spacing between the brackets 303 ensures that the cylinder 1 remains horizontal. Then, the mounting leg 301 at the bottom of the cylinder 1 is placed between the two brackets 303. Under the force of the torsion spring 311, the limiting rod 309 rotates to the inside of the docking groove 302. At this time, the bottom of the stop block 310 abuts against the outer wall of the mounting leg 301. Then, the lead screw 306 is rotated, and the lead screw 306 drives the rotating seat 308 to slide along the guide rod 307. At the same time, the rotating seat 308 drives the limiting rod 309 to press against the inner wall of the docking groove 302, further fixing the mounting leg 301 and improving its firmness.

[0032] Finally, install the connecting pipe 208 onto the outlet 201. Simply align the bottom surface of the connecting pipe 208 with the outlet 201 and press it down. The bottom surface of the connecting pipe 208 will slide against the inclined surface on the fixing strip 207, causing the three fixing strips 207 to move outward until they no longer obstruct the downward movement of the connecting pipe 208. When the connecting pipe 208 and the outlet 201 come into contact with each other, the slide bar 205, under the reset action of the first spring 206, will drive the fixing strip 207 to move along the guide bar 204 towards the initial position until the top of the fixing strip 207 touches the outer wall of the connecting pipe 208. Then, pinch the fixing strip 207 and rotate the fixing ring 203. The fixing ring 203 will drive the drive ring 202 to rotate. Since the drive ring 202 is threadedly connected to the outlet 201, it will cause the three fixing strips 207 to clamp the connecting pipe 208. At this point, the quick installation of the connecting pipe 208 is completed, with high operating efficiency.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A temperature control system for an explosion-proof electric heater, characterized in that, It includes a cylinder (1), a heating structure (4) disposed on the cylinder (1), a sealing structure (5) installed on the cylinder (1), and a support structure (6) connected to the sealing structure (5). The sealing structure (5) includes an annular seat (501), and the end of the cylinder (1) is fixedly connected to the annular seat (501). The support structure (6) includes an mounting ring (601) and three mounting blocks (602) fixedly connected to the mounting ring (601). The inner side of the annular seat (501) is fitted with the mounting ring (601). The mounting block (602) is slidably connected to a connecting strip (603). One end of the connecting strip (603) is fixedly connected to an arc plate (604). The other end of the connecting strip (603) is fixedly connected to a driving block (605). A roller (607) is rotatably connected to the driving block (605). A second baffle plate (611) is provided on the side of the mounting ring (601) near the outer side. The second baffle plate (611) cooperates with the heating structure (4). The heating structure (4) includes a tube sheet (401) and an electric heating tube (402) fixedly connected to the tube sheet (401). The tube sheet (401) is connected to the end of the cylinder (1), and a second baffle plate (611) is fixedly connected to the end of the electric heating tube (402). The side of the second baffle plate (611) near the cylinder (1) abuts against the mounting block (602).

2. The temperature control system for an explosion-proof electric heater according to claim 1, characterized in that: A second spring (606) is fixedly connected between the inner wall of the drive block (605) and the mounting block (602). An inclined surface is provided on the side of the drive block (605) near the cylinder (1). The inner wall of the annular seat (501) and the inclined surface provided on the drive block (605) are in sliding fit.

3. The temperature control system for an explosion-proof electric heater according to claim 1, characterized in that: Three connecting blocks (608) are fixedly connected to the side of the mounting ring (601) facing away from the mounting block (602). Two reinforcing rods (609) are fixedly connected to the back of the arc plate (604). The reinforcing rods (609) are slidably connected to the connecting blocks (608). A rotating roller (610) is rotatably connected to the side of the connecting block (608) near the inner wall of the cylinder (1). Three sliding grooves (612) are opened on the inner side of the cylinder (1). The three rotating rollers (610) are respectively rolled between the adjacent sliding grooves (612).

4. The temperature control system for an explosion-proof electric heater according to claim 2, characterized in that: A retaining ring (505) is abutted on the outer side of the annular seat (501), and a first rubber ring (507) is engaged between the retaining ring (505) and the annular seat (501). A second rubber ring (508) is fixedly connected to the other side of the retaining ring (505).

5. The temperature control system for an explosion-proof electric heater according to claim 4, characterized in that: A insert plate (506) is fixedly connected to the side of the retaining ring (505) near the first rubber ring (507). The insert plate (506) engages with the groove on the annular seat (501). A retaining strip (502) is slidably connected to the annular seat (501). An attachment ear (503) is fixedly connected to the top of the retaining strip (502). The attachment ear (503) is slidably connected to the annular seat (501). A third tension spring (504) is fixedly connected between the bottom surface of the attachment ear (503) and the inner wall of the annular seat (501). The bottom of the retaining strip (502) engages with the hole at the center of the insert plate (506).

6. The temperature control system for an explosion-proof electric heater according to claim 5, characterized in that: The annular seat (501) has a plurality of second bolts (509) arranged in a circular array. The annular seat (501) and the tube sheet (401) are fixedly connected by the second bolts (509). The side of the tube sheet (401) near the annular seat (501) abuts against the second rubber ring (508).

7. The temperature control system for an explosion-proof electric heater according to claim 6, characterized in that: A heat insulation plate (403) is fixedly connected to the side of the tube sheet (401) away from the annular seat (501). The heat insulation plate (403) is fixedly connected to the electric heating tube (402). A temperature probe (406) is fixedly connected to the center of the heat insulation plate (403). The temperature probe (406) passes through the tube sheet (401). An explosion-proof box (404) is fixedly connected to the end of the electric heating tube (402). The end of the temperature probe (406) is located inside the explosion-proof box (404). Three first baffles (405) are fixedly connected to the electric heating tube (402).

8. The temperature control system for an explosion-proof electric heater according to claim 3, characterized in that: A docking structure (2) is installed on the cylinder (1). The docking structure (2) includes an outlet (201) and a drive ring (202) threaded onto the outlet (201). The outlet (201) is fixedly connected to the outer wall of the cylinder (1). A fixing ring (203) is fixedly connected to the drive ring (202). Three guide strips (204) are fixedly connected to the inner side of the fixing ring (203). The guide strips (204) are slidably connected to each other. A slide bar (205) is connected to the bottom surface of the drive ring (202). A first spring (206) is fixedly connected between the inner side of the slide bar (205) and the fixed ring (203). A fixing bar (207) is fixedly connected to one end of the slide bar (205) near the outer side. The top surface of the outlet (201) abuts against the connecting pipe (208). The top end of the fixing bar (207) abuts against the connecting pipe (208).

9. The temperature control system for an explosion-proof electric heater according to claim 8, characterized in that: The bottom of the cylindrical body (1) is provided with an installation structure (3), the installation structure (3) includes an installation leg (301) and a docking groove (302) opened on the installation leg (301). Two installation legs (301) are fixedly connected to the bottom of the cylindrical body (1). The bottom of the installation leg (301) is provided with a base frame (303). Both ends of the base frame (303) are fixedly connected with a first bolt (304). The bottom of the first bolt (304) is fixedly connected with an adjusting plate (305). Two connecting rods (312) are provided between the two base frames (303). The frame (303) is slidably connected to the connecting rod (312), and a second tension spring (316) is fixedly connected between the two base frames (303). One of the connecting rods (312) passes through the second tension spring (316), and the other connecting rod (312) has multiple insertion holes (313). One end of each of the two base frames (303) is slidably connected to a pin (314). A first tension spring (315) is fixedly connected between the pin (314) and the base frame (303), and the pin (314) engages with the corresponding insertion hole (313).

10. The temperature control system for an explosion-proof electric heater according to claim 9, characterized in that: The base frame (303) is rotatably connected to a lead screw (306), and a rotating seat (308) is threaded to each end of the lead screw (306). A guide rod (307) is fixedly connected to the base frame (303). The rotating seat (308) and the guide rod (307) are slidably connected. A limit rod (309) is rotatably connected to the rotating seat (308). A torsion spring (311) is fixedly connected between the side of the limit rod (309) and the inner wall of the rotating seat (308). The top surface of the base frame (303) and the bottom surface of the mounting leg (301) abut against each other. A stop block (310) is threadedly connected to the limit rod (309). The bottom surface of the stop block (310) abuts against the mounting leg (301).

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