A spiral built-in heating device

Abstract

This invention provides a spiral-type built-in heating device, belonging to the technical field of heating devices. It includes a support frame, a first ring frame and a cable reel mounted on the support frame, and a heating cable mounted on the cable reel. This invention utilizes the rotation of the cable reel in two different directions to simultaneously release the heating cable and rotate the cable itself. Combined with multiple spiral segments on the outer side, the heating cable spirally enters the inner wall of the pipe. This allows for rapid penetration of the viscous medium within the pipe during insertion, avoiding the bending that can occur with direct insertion. This reduces the difficulty of inserting the heating cable into the pipe, allowing it to smoothly reach the appropriate insertion length and thus quickly heat the pipe. Simultaneously, multiple guiding components in the guide block intermittently guide the heating cable during its extension, reducing friction on the spiral segments, increasing their service life, and improving the efficiency of the heating cable insertion.

Description

Technical Field

[0001] This invention relates to the field of heating device technology, and more specifically, to a spiral built-in heating device. Background Technology

[0002] Heating is a fundamental and crucial operation in numerous industrial production and daily life scenarios. From traditional industrial manufacturing to emerging technological fields, from large industrial equipment to small household products, there are varying requirements for the performance of heating devices. With the advancement of technology and the development of industries, the technology of heating devices has continuously evolved, gradually developing from simple heating elements in the early days into complex systems with diverse functions and optimized performance. As a device that converts electrical energy into heat energy, heating cables play a key role in many fields.

[0003] In existing technologies, when heating the interior of a pipe, due to the pipe's length and small inner diameter, conventional heating devices are installed on the pipe's inner wall using standard methods. Heating cables are then inserted into the pipe's inner wall for heating. However, the common practice of extending the heating cable by simply letting it slide into the pipe's inner wall presents challenges. When the pipe's inner wall contains a viscous medium, the end of the heating cable must overcome the medium's resistance to penetrate. During this process, excessive resistance can cause the heating cable to bend and become unable to continue its insertion, making it difficult to effectively extend the cable to the appropriate depth, thus affecting the overall heating of the pipe. Therefore, inventing a spiral-type built-in heating device to solve these problems has become a pressing issue for those skilled in the art. Summary of the Invention

[0004] To overcome the above shortcomings, the present invention provides a spiral built-in heating device, which aims to solve the common problem that heating cables cannot go deeper into pipes when they encounter viscous media.

[0005] This invention is implemented as follows:

[0006] This invention provides a spiral built-in heating device, including a support frame and a first ring frame and a cable reel disposed on the support frame, and also including a heating cable disposed on the cable reel;

[0007] The upper end of the support frame is fixedly connected to the lower end of the first ring frame. A second ring frame is installed on the inner wall of the first ring frame. An internal gear ring is installed on the inner wall of the second ring frame. A motor is installed on one side of the first ring frame. A drive shaft is installed on the inner wall of the first ring frame near the motor. A limit frame is installed on one end of the drive shaft. Slider blocks are installed on the inner walls of both sides of the limit frame. A guide block is installed on the side of the first ring frame away from the motor.

[0008] The cable reel has annular grooves on both outer walls that slide in connection with the outer wall of the slider. Fixed shafts are installed on both sides of the cable reel. A connecting shaft is installed at one end of the fixed shaft. A first bevel gear is installed at one end of the connecting shaft. An adjusting shaft is installed on the outer wall of the connecting shaft. A limiting groove that slides in connection with the outer wall of the second annular frame is opened at one end of the adjusting shaft. A driving groove is opened inside the adjusting shaft. A rotating shaft, a gear, and a second bevel gear are respectively installed on the inner wall of the driving groove. A distribution box is installed on one side of the cable reel.

[0009] The heating cable is coiled on a cable reel, and the outer wall of the heating cable is provided with multiple spiral strips. An adsorption sleeve is installed on the outer wall of the heating cable near the space between two spiral strips.

[0010] Preferably, the second ring frame and the first ring frame are vertically fixed together, the output end of the motor is fixedly connected to one end of the drive shaft, and the outer wall of the drive shaft is rotatably connected to the inner wall of the first ring frame.

[0011] Preferably, one end of the fixed shaft is fixedly connected to the side wall of the cable reel, both ends of the connecting shaft are fixedly connected to the fixed shaft and one end of the first bevel gear, respectively, and the outer wall of the connecting shaft is rotatably connected to the inner wall of the adjusting shaft.

[0012] Preferably, the outer wall of the rotating shaft and the inner wall of the drive groove are rotatably connected, the two gears are symmetrically fixedly connected to the side walls at both ends of the rotating shaft, a second bevel gear that meshes with the first bevel gear is installed on the side wall of the rotating shaft near one of the gears, the outer teeth of the gears pass through the drive groove, and the gears are meshed with the internal gear ring.

[0013] Preferably, the input end of the heating cable is electrically connected to the distribution box, the outer wall of the heating cable is slidably connected to the inner wall of the guide block, an mounting plate is installed at one end of the guide block, a meter sensor is installed on the mounting plate, a stainless steel sheath is provided on the outer side of the heating cable, and multiple spiral strips are welded to the side wall of the stainless steel sheath. The spiral strips and the stainless steel sheath can be bent.

[0014] Preferably, the guide block has multiple equidistant positioning grooves inside, and multiple guide grooves are formed on the upper and lower side walls of the positioning grooves. A guide component is installed on the inner wall of the positioning groove.

[0015] Preferably, the guide assembly includes an upper half ring, a lower half ring, a tile-shaped magnet, and a shaft tooth. The outer walls of the upper half ring and the lower half ring are slidably connected to the inner wall of the positioning groove. An upper guide rod is installed on the upper side wall of the upper half ring and is slidably connected to the inner wall of the upper guide groove. A lower tooth plate is installed on the side wall of the upper half ring.

[0016] Preferably, a lower guide rod is installed on the lower end side wall of the lower half ring and is slidably connected to the inner wall of the lower guide groove. An upper toothed plate is installed on the side wall of the lower half ring, and a through groove is opened on one side of the upper toothed plate and is slidably connected to the outer wall of the lower toothed plate.

[0017] Preferably, the upper half ring has a groove on its side wall, the lower half ring has a counterweight installed on its inner wall, the inner side walls of the upper and lower half rings are fixedly connected with multiple balls, the inner side walls of the upper and lower half rings near the balls are each equipped with a tile-shaped magnet that attracts the magnetic sleeve, the two ends of the shaft tooth are rotatably connected to the inner wall of the positioning groove, and the shaft tooth is respectively meshed with the lower tooth plate and the upper tooth plate.

[0018] The beneficial effects of this invention are:

[0019] By rotating the cable reel in two different directions, the heating cable is unloaded while simultaneously rotating itself. Combined with the multi-segment spiral strips on the outside, the heating cable spirals into the inner wall of the pipe. This allows the cable to quickly penetrate the viscous medium inside the pipe during insertion, avoiding the bending that can easily occur with direct insertion. This reduces the difficulty of inserting the heating cable into the pipe, ensuring it reaches the appropriate insertion length and thus enabling rapid heating of the pipe.

[0020] Meanwhile, multiple guiding components in the guide block intermittently guide the heating cable as it extends, ensuring accurate insertion into the inner wall of the pipe. This also effectively prevents friction between the outer spiral strip of the heating cable and the inner wall of the guide block under gravity, thus reducing friction, extending its service life, and improving the efficiency of the heating cable insertion. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a spiral built-in heating device provided by an embodiment of the present invention;

[0023] Figure 2 This invention provides a spiral-type built-in heating device. Figure 1 Enlarged view of the structure of region A in the middle;

[0024] Figure 3 This is a partial half-sectional view of a spiral built-in heating device provided in an embodiment of the present invention;

[0025] Figure 4 This invention provides a spiral-type built-in heating device. Figure 3 Enlarged view of the structure of region B in the middle;

[0026] Figure 5 This is a partial structural cross-sectional view of a spiral built-in heating device provided in an embodiment of the present invention;

[0027] Figure 6 This invention provides a spiral-type built-in heating device. Figure 5 Enlarged view of the structure of region C in the middle;

[0028] Figure 7 This is a schematic diagram of the guide block structure in a spiral built-in heating device provided by an embodiment of the present invention;

[0029] Figure 8 This is a half-sectional view of the guide block structure in a spiral built-in heating device provided by an embodiment of the present invention;

[0030] Figure 9 This invention provides a spiral-type built-in heating device. Figure 8 Enlarged view of the structure of region D in the middle;

[0031] Figure 10 This is a schematic diagram of the guide component structure in a spiral built-in heating device provided by an embodiment of the present invention.

[0032] In the diagram: 1. Support frame; 11. First ring frame; 12. Second ring frame; 121. Internal gear ring; 13. Motor; 14. Drive shaft; 15. Limiting frame; 151. Slider; 2. Cable reel; 21. Ring groove; 22. Fixed shaft; 221. Connecting shaft; 222. First bevel gear; 23. Adjusting shaft; 231. Limiting groove; 232. Drive groove; 24. Rotating shaft; 25. Gear; 26. Second bevel gear; 27. Distribution box; 3. 31. Guide block; 32. Mounting plate; 33. Positioning groove; 4. Guide groove; 4. Guide assembly; 41. Upper half ring; 411. Groove; 412. Upper guide rod; 413. Lower toothed plate; 42. Lower half ring; 421. Counterweight block; 422. Lower guide rod; 423. Upper toothed plate; 424. Through groove; 43. Tile magnet; 44. Ball bearing; 45. Shaft tooth; 5. Heating cable; 51. Spiral strip; 52. Adsorption sleeve; 6. Meter sensor. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0034] Example, refer to Figures 1-10 A spiral built-in heating device includes a support frame 1, a first ring frame 11 and a cable reel 2 disposed on the support frame 1, and a heating cable 5 disposed on the cable reel 2.

[0035] The upper end of the support frame 1 is fixedly connected to the lower end of the first ring frame 11. A second ring frame 12 is installed on the inner wall of the first ring frame 11. An internal gear ring 121 is installed on the inner wall of the second ring frame 12. A motor 13 is installed on one side of the first ring frame 11. A drive shaft 14 is installed on the inner wall of the first ring frame 11 near the motor 13. A limit frame 15 is installed on one end of the drive shaft 14. Slider blocks 151 are installed on the inner walls of both sides of the limit frame 15. A guide block 3 is installed on the side of the first ring frame 11 away from the motor 13.

[0036] The outer walls of both sides of the cable reel 2 are provided with annular grooves 21 that are slidably connected to the outer wall of the slider 151. Fixed shafts 22 are installed on both sides of the cable reel 2. A connecting shaft 221 is installed at one end of the fixed shaft 22. A first bevel gear 222 is installed at one end of the connecting shaft 221. An adjusting shaft 23 is installed on the outer wall of the connecting shaft 221. A limiting groove 231 that is slidably connected to the outer wall of the second ring frame 12 is provided at one end of the adjusting shaft 23. A driving groove 232 is provided inside the adjusting shaft 23. A rotating shaft 24, a gear 25, and a second bevel gear 26 are respectively installed on the inner wall of the driving groove 232. A distribution box 27 is installed on one side of the cable reel 2.

[0037] The heating cable 5 is coiled on the cable reel 2. The outer wall of the heating cable 5 is provided with multiple spiral strips 51. An adsorption sleeve 52 is installed on the outer wall of the heating cable 5 near the space between two spiral strips 51.

[0038] Furthermore; the second ring frame 12 and the first ring frame 11 are vertically fixed together; the output end of the motor 13 is fixedly connected to one end of the drive shaft 14; the outer wall of the drive shaft 14 is rotatably connected to the inner wall of the first ring frame 11; one end of the fixed shaft 22 is fixedly connected to the side wall of the cable reel 2; both ends of the connecting shaft 221 are fixedly connected to the fixed shaft 22 and one end of the first bevel gear 222, respectively; the outer wall of the connecting shaft 221 is rotatably connected to the inner wall of the adjusting shaft 23; the outer wall of the rotating shaft 24 is rotatably connected to the inner wall of the drive groove 232; two gears 25 are symmetrically fixedly connected to the side walls of both ends of the rotating shaft 24; the rotating shaft 24 is close to... A second bevel gear 26, which meshes with the first bevel gear 222, is installed on the side wall of one of the gears 25. The outer teeth of the gear 25 pass through the drive groove 232. The gear 25 and the internal gear ring 121 are meshed together. The input end of the heating cable 5 is electrically connected to the distribution box 27. The outer wall of the heating cable 5 is slidably connected to the inner wall of the guide block 3. An mounting plate 31 is installed at one end of the guide block 3. A metering sensor 6 is installed on the mounting plate 31. A stainless steel sheath is provided on the outer side of the heating cable 5. Multiple spiral strips 51 are welded to the side wall of the stainless steel sheath. The spiral strips 51 and the stainless steel sheath can be bent.

[0039] It should be noted that: the input end of the heating cable 5 passes through the distribution box 27 outside the cable reel 2 for connection and fixation. The rear heating cable 5 is coiled on the cable reel 2 with one end extending into the guide block 3. When heating the inner wall of the pipe, the height of the pipe and the guide block 3 are kept consistent. The motor 13 starts and controls the drive shaft 14 to drive the limit frame 15 to rotate. The entire cable reel 2 rotates around the drive shaft 14 under the limit between the slider 151 and the annular groove 21. The guide block 3 and the drive shaft 14 are located on the same axis, so that the heating cable 5 on the cable reel 2 rotates as a whole. At the same time, the heating cable 5 located in the guide block 3 rotates. At the same time, the fixed shafts 22 at both ends of the cable reel 2 drive the adjusting shaft 23 to rotate on the second ring frame 12. The gear 25 in the adjusting shaft 23 meshes with the internal gear ring on the inner side of the second ring frame 12 during the revolution. 121 rotates on its own axis, while the second bevel gear 26, coaxial with gear 25, rotates. It meshes with the first bevel gear 222 to rotate, thereby realizing the rotation of the connecting shaft 221 and the fixed shaft 22. This drives the cable reel 2 to rotate twice around the fixed shaft 22. During its rotation, the heating cable 5 on the cable reel 2 is continuously conveyed forward through the guide block 3, allowing the heating cable 5 to extend into the inner wall of the pipe during rotation. It works in conjunction with the spiral strip 51 on the outside of the heating cable 5 to spiral into the inner wall of the pipe. The length of the extension is detected in real time by the meter sensor 6. This allows the heating cable 5 to quickly penetrate the viscous medium inside the pipe, avoiding the bending of the heating cable 5 that is easily caused by direct insertion. This reduces the difficulty of the heating cable 5 extending into the pipe, allowing it to smoothly reach the appropriate extension length, thereby quickly heating the pipe.

[0040] Furthermore, the guide block 3 has multiple equidistant positioning grooves 32 inside, and multiple guide grooves 33 are formed on the upper and lower side walls of the positioning grooves 32. A guide assembly 4 is installed on the inner wall of the positioning groove 32. The guide assembly 4 includes an upper half ring 41, a lower half ring 42, a tile-shaped magnet 43, and a shaft tooth 45. The outer walls of the upper half ring 41 and the lower half ring 42 are slidably connected to the inner wall of the positioning groove 32. An upper guide rod 412 is installed on the upper side wall of the upper half ring 41 and is slidably connected to the inner wall of the upper guide groove 33. A lower toothed plate 413 is installed on the side wall of the upper half ring 41. A lower toothed plate 413 is installed on the lower side wall of the lower half ring 42 and is slidably connected to the inner wall of the lower guide groove 33. The lower guide rod 422, the side wall of the lower half ring 42 is equipped with an upper toothed plate 423, one side of the upper toothed plate 423 is provided with a through groove 424 that slides and connects with the outer wall of the lower toothed plate 413, the side wall of the upper half ring 41 is provided with a groove 411, the inner wall of the lower half ring 42 is equipped with a counterweight block 421, the inner side walls of the upper half ring 41 and the lower half ring 42 are fixedly connected with multiple balls 44, the inner side walls of the upper half ring 41 and the lower half ring 42 near the balls 44 are equipped with tile-shaped magnets 43 that magnetically attract the adsorption sleeve 52, the two ends of the shaft tooth 45 are rotatably connected to the inner wall of the positioning groove 32, and the shaft tooth 45 is meshed with the lower toothed plate 413 and the upper toothed plate 423 respectively.

[0041] It should be noted that the stainless steel sheath on the outside of the heating cable 5 should not be attracted to the magnet. During the process of the heating cable 5 extending into the pipe through the guide block 3, when the heating cable 5 is located between the two spiral strips 51 and the suction sleeve 52 approaches the guide assembly 4, the tile-shaped magnets 43 on the inner walls of the two semi-rings attract each other magnetically, causing the upper and lower semi-rings to move closer to the suction sleeve 52 until the inner ball bearing 44 of the semi-ring contacts the suction sleeve 52, thus fixing the heating cable 5 at the center of the guide block 3. During the subsequent movement of the heating cable 5, the ball bearing 44 rolls, guiding its extension until it completely detaches from the suction sleeve 52. At this point, the magnetic force between the tile-shaped magnets 43 and the suction sleeve 52 disappears, and the lower semi-ring 42... Under the action of the weight 421, it falls downward into the lower part of the positioning groove 32. At the same time, as the upper toothed plate 423 on one side moves downward, the meshing shaft tooth 45 rotates, causing the lower toothed plate 413 on the meshing side to drive the upper half ring 41 upward, so that it enters the upper part of the positioning groove 32, thereby achieving separation from the adsorption sleeve 52. This allows the spiral strip 51 to pass smoothly through the guide assembly 4. This assembly intermittently guides the heating cable 5 during its extension, allowing it to be accurately inserted into the inner wall of the pipe. At the same time, it effectively avoids friction between the outer spiral strip 51 and the inner wall of the guide block 3 under the action of gravity, thereby reducing the friction of the spiral strip 51, improving its service life, and increasing the efficiency of the heating cable 5 insertion.

[0042] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A spiral-type built-in heating device, comprising a support frame (1) and a first ring frame (11) and a cable reel (2) disposed on the support frame (1), characterized in that, It also includes heating cables (5) mounted on the cable reel (2); The upper end of the support frame (1) is fixedly connected to the lower end of the first ring frame (11). A second ring frame (12) is installed on the inner wall of the first ring frame (11). An internal gear ring (121) is installed on the inner wall of the second ring frame (12). A motor (13) is installed on one side of the first ring frame (11). A drive shaft (14) is installed on the inner wall of the first ring frame (11) near the motor (13). A limit frame (15) is installed at one end of the drive shaft (14). A slider (151) is installed on the inner walls of both sides of the limit frame (15). A guide block (3) is installed on the side of the first ring frame (11) away from the motor (13). The cable reel (2) has annular grooves (21) on both outer walls that are slidably connected to the outer wall of the slider (151). Fixed shafts (22) are installed on both sides of the cable reel (2). A connecting shaft (221) is installed at one end of the fixed shaft (22). A first bevel gear (222) is installed at one end of the connecting shaft (221). An adjusting shaft (23) is installed on the outer wall of the connecting shaft (221). A limiting groove (231) is opened at one end of the adjusting shaft (23) that is slidably connected to the outer wall of the second ring frame (12). A driving groove (232) is opened inside the adjusting shaft (23). A rotating shaft (24), a gear (25), and a second bevel gear (26) are respectively installed on the inner wall of the driving groove (232). A distribution box (27) is installed on one side of the cable reel (2). The heating cable (5) is coiled on the cable reel (2). The outer wall of the heating cable (5) is provided with multiple spiral strips (51). An adsorption sleeve (52) is installed on the outer wall of the heating cable (5) near the two spiral strips (51).

2. The spiral-type built-in heating device according to claim 1, characterized in that, The second ring frame (12) and the first ring frame (11) are vertically fixed together. The output end of the motor (13) is fixedly connected to one end of the drive shaft (14). The outer wall of the drive shaft (14) is rotatably connected to the inner wall of the first ring frame (11).

3. The spiral-type built-in heating device according to claim 2, characterized in that, One end of the fixed shaft (22) is fixedly connected to the side wall of the cable reel (2), and both ends of the connecting shaft (221) are fixedly connected to the fixed shaft (22) and one end of the first bevel gear (222), respectively. The outer wall of the connecting shaft (221) is rotatably connected to the inner wall of the adjusting shaft (23).

4. A spiral-type built-in heating device according to claim 3, characterized in that, The outer wall of the rotating shaft (24) and the inner wall of the drive groove (232) are rotatably connected. Two gears (25) are symmetrically fixedly connected to the side walls at both ends of the rotating shaft (24). A second bevel gear (26) that meshes with the first bevel gear (222) is installed on the side wall of the rotating shaft (24) near one of the gears (25). The outer teeth of the gear (25) pass through the drive groove (232). The gear (25) and the internal gear ring (121) are meshed together.

5. A spiral-type built-in heating device according to claim 4, characterized in that, The input end of the heating cable (5) is electrically connected to the distribution box (27). The outer wall of the heating cable (5) is slidably connected to the inner wall of the guide block (3). One end of the guide block (3) is equipped with an mounting plate (31). A meter sensor (6) is installed on the mounting plate (31). A stainless steel sheath is provided on the outer side of the heating cable (5). Multiple spiral strips (51) are welded to the side wall of the stainless steel sheath. The spiral strips (51) and the stainless steel sheath can be bent.

6. The spiral-type built-in heating device according to claim 1, characterized in that, The guide block (3) has multiple positioning grooves (32) inside, and multiple guide grooves (33) are provided on the upper and lower side walls of the positioning groove (32). Multiple guide components (4) are installed on the inner wall of the positioning groove (32).

7. A spiral-type built-in heating device according to claim 6, characterized in that, The guide assembly (4) includes an upper half ring (41), a lower half ring (42), a tile-shaped magnet (43), and a shaft tooth (45). The outer walls of the upper half ring (41) and the lower half ring (42) are slidably connected to the inner wall of the positioning groove (32). An upper guide rod (412) is installed on the upper side wall of the upper half ring (41) and is slidably connected to the inner wall of the upper guide groove (33). A lower tooth plate (413) is installed on the side wall of the upper half ring (41).

8. A spiral-type built-in heating device according to claim 7, characterized in that, The lower half ring (42) has a lower guide rod (422) installed on the lower side wall that is slidably connected to the inner wall of the lower guide groove (33). The lower half ring (42) has an upper toothed plate (423) installed on the side wall. The upper toothed plate (423) has a through groove (424) on one side that is slidably connected to the outer wall of the lower toothed plate (413).

9. A spiral-type built-in heating device according to claim 8, characterized in that, The upper half ring (41) has a groove (411) on its side wall, and the lower half ring (42) has a counterweight (421) installed on its inner wall. The inner side walls of the upper half ring (41) and the lower half ring (42) are fixedly connected with a plurality of balls (44). The inner side walls of the upper half ring (41) and the lower half ring (42) near the balls (44) are each equipped with a tile-shaped magnet (43) that magnetically attracts the adsorption sleeve (52). The two ends of the shaft tooth (45) are rotatably connected to the inner wall of the positioning groove (32). The shaft tooth (45) is meshed with the lower tooth plate (413) and the upper tooth plate (423) respectively.

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