Radial heating device for a vat

Abstract

The application provides a radial heating device for a barrel body, relates to the technical field of residual liquid evaporation treatment, and discloses a radial heating device for a barrel body, which comprises a frame body and a heating plate assembly composed of a plurality of heating plates, two frame bodies are rotationally connected, the heating plate assembly is used for surrounding and abutting on the barrel body, gaps for avoiding ring ribs on the barrel body are arranged between the heating plates, a floating unit is arranged on the frame body, the floating unit comprises a compression spring sleeved on a push rod, the push rod is arranged in a shaft hole on the frame body, one end of the compression spring is rotationally connected with a connecting seat connected with the heating plate, and the other end is connected with the inner surface of the circumferential side of the frame body. According to the application, the gaps arranged between the heating plates can avoid the ring ribs, the frame body is rotated to press the compression spring, the heating plate adjusts the position along with the compression spring, and the connecting seat rotates around the end of the push rod in the horizontal plane, so that the heating plate can tightly abut on the surface of the barrel body and adapt to barrel bodies of different specifications.

Description

Technical Field

[0001] This invention relates to the field of residual liquid treatment technology, and more specifically, to a radial heating device for a tank. Background Technology

[0002] When processing residual liquid from nuclear power plants, the residual liquid can be placed in a steel drum and heated by a heating device to dry it, separating radioactive salts and liquefying the emitted steam into condensate. However, when heating the steel drum, the steel drum's ribs create a gap between it and the heating plate. This gap severely affects the heat transfer efficiency between the heater's heating plate and the steel drum, resulting in low drying efficiency and significant energy waste. Furthermore, the heater can only accommodate one type of steel drum; if the drum size changes, drying cannot be performed. Summary of the Invention

[0003] The problem to be solved by the present invention is how to improve the heating efficiency of the heating device and make the heating device applicable to barrels of different sizes.

[0004] Therefore, the present invention provides a radial heating device for a barrel, comprising a heating plate assembly, a frame, and a floating unit. The projections of the heating plate assembly and the frame on the horizontal plane are both semi-circular. Two heating plate assemblies are respectively connected to the inner sides of the two frames. The two frames are rotatably connected to each other at one end along their circumferential direction. The two heating plate assemblies are used to surround and abut against the circumferential surface of the barrel. The heating plate assembly includes a plurality of arc-shaped heating plates arranged in an array along the axial and circumferential directions of the barrel. The arc-shaped heating plates are used to fit against the outer circumferential surface of the barrel. A gap is provided between the heating plates for... To avoid the ring ribs on the barrel body, multiple floating units are correspondingly connected to multiple heating plates. Each floating unit includes a push rod, a compression spring, and a connecting seat. The frame body has a shaft hole, through which the push rod passes and slides along the shaft hole. The connecting seat is connected to the end of the push rod near the heating plate and is used to rotate in the horizontal plane around the connection position between the connecting seat and the push rod. The end of the connecting seat away from the push rod is connected to the heating plate. The compression spring is sleeved on the push rod, and its two ends are respectively connected to the connecting seat and the inner peripheral surface of the frame body.

[0005] Optionally, the floating unit further includes a pin, the connecting seat has a through hole, one end of the push rod is inserted into the through hole, the width of the end of the push rod inserted into the through hole on the horizontal plane is smaller than the width of the through hole on the horizontal plane, the end of the push rod inserted into the connecting seat and the connecting seat both have pin holes along the axial direction of the barrel, and the pin passes through the pin holes respectively provided on the push rod and the connecting seat.

[0006] Optionally, the dimension of the end of the push rod inserted into the through hole in the axial direction of the barrel body is smaller than the dimension of the through hole in the axial direction of the barrel body.

[0007] Optionally, the heating plate is further provided with a floating support on the side away from the barrel body. The floating support has a groove structure at the end away from the heating plate, and the connecting seat has a boss structure at the end away from the push rod. The boss structure is inserted into the groove structure.

[0008] Optionally, the shaft hole includes a first hole, a second hole, and a third hole arranged coaxially and sequentially from the side of the frame away from the heating plate to the side near the heating plate. The diameters of the first hole and the third hole are both larger than the diameter of the second hole. The end face between the first hole and the second hole is the first end face, and the end face between the second hole and the third hole is the second end face. The floating unit also includes a sleeve that passes through the second hole. A frustum structure is connected to the circumferential side of the sleeve located at the first hole. The frustum structure is bolted to the first end face. The push rod passes through the sleeve. A retaining ring is provided at the end of the push rod away from the heating plate. The retaining ring is used to abut against the end face of the sleeve away from the heating plate. A disc structure is provided on the circumferential surface of the end of the push rod near the connecting seat. A compression spring is sleeved on the circumferential side of the sleeve. The two ends of the compression spring abut against the second end face and the disc structure, respectively.

[0009] Optionally, the floating unit further includes an anti-rotation sleeve and an anti-rotation screw. The anti-rotation sleeve is fitted onto the outer peripheral surface of the push rod and is interference-fitted with the inner peripheral surface of the sleeve. Both the inner peripheral surface of the anti-rotation sleeve and the outer surface of the push rod have keyways. The keyways penetrate the end face of the anti-rotation sleeve away from the heating plate. The anti-rotation sleeve and the push rod are keyed together. Both the surfaces of the anti-rotation sleeve and the sleeve that are connected to each other have threads. Two sections of the threads are connected to form a threaded hole. The anti-rotation screw is threadedly connected to the threaded hole.

[0010] Optionally, the floating unit further includes a sliding bushing, which is sleeved on the outer peripheral surface of the push rod and has an interference fit with the inner peripheral surface of the sleeve.

[0011] Optionally, the frame is provided with a bearing seat, and the shaft hole is formed on the bearing seat.

[0012] Optionally, the radial heating device for the barrel further includes a rotating support and a rotating shaft. The rotating support extends along the axial direction of the barrel and is provided with multiple sets of first and second support plates evenly distributed along the axial direction of the barrel. Multiple ear seats are provided on one adjacent end of each of the two frames. The multiple ear seats on each frame correspond to multiple sets of first and second support plates. Two ear seats on the two frames located in the same horizontal plane are clamped between the corresponding sets of first and second support plates. Two rotating shafts pass through the two ear seats, as well as the first and second support plates, respectively, to rotatably connect the two frames to the rotating support.

[0013] Optionally, the heating plate has chamfers at both ends near the annular rib.

[0014] Compared with the prior art, the advantages of the radial heating device for the barrel of the present invention are:

[0015] This invention utilizes a frame and heating plate assembly. Both the frame and heating plate assembly have semi-circular projections on the horizontal plane. The two frames and two heating plate assemblies are arranged to form a hollow cylinder. The frame is connected to the outside of the heating plate assembly, and the inner circumferential surface of the frame is connected to the hollow inner surface of the heating plate assembly. This creates two concentric hollow cylinders. The two frames are positioned opposite each other, and their circumferential ends are rotatably connected. Relative rotation of the two frames causes relative rotation of the two heating plate assemblies, allowing them to rotate to surround the circumferential surface of the cylinder for heating. Each heating plate assembly includes multiple heating plates, whose projections on the horizontal plane are arc-shaped, corresponding to the shape of the circumferential surface of the cylinder. These heating plates are arrayed along the axial and circumferential directions of the cylinder to form the heating plate assembly. Each heating plate has a floating unit connected to its end furthest from the cylinder, and the end of the floating unit furthest from the heating plate is connected to the frame. The floating unit includes a push rod, a compression spring, and a connecting seat. A shaft hole is provided on the frame, through which the push rod passes, with both ends extending out of the shaft hole. The connecting seat is connected to the end of the push rod near the heating plate and is rotatably connected to the push rod. The connecting seat can rotate horizontally around the end of the push rod. The compression spring is sleeved around the push rod, with both ends connected to the connecting seat and the inner surface of the frame. When the two frames rotate relative to each other, the heating plate also rotates with the frames until it abuts against the outer surface of the barrel. As the frames continue to rotate, they compress the compression spring. The pressure exerted by the compression spring on the heating plate through the connecting seat allows the heating plate to adhere tightly to the barrel. Due to the gap between the heating plates, the vertical gap corresponds to the position of the barrel's ribs, allowing the heating plate to avoid the ribs and adhere tightly to the barrel surface. When using barrels of different sizes, the heating plate can also adjust its position with the compression spring and rotate slightly horizontally around the end of the push rod with the connecting seat to accommodate different barrel sizes. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of the radial heating device for the barrel body according to an embodiment of the present invention;

[0017] Figure 2 This is a second schematic diagram of the radial heating device for the barrel body according to an embodiment of the present invention;

[0018] Figure 3 This is one of the structural schematic diagrams of the floating unit described in an embodiment of the present invention;

[0019] Figure 4 This is a second schematic diagram of the structure of the floating unit described in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the connecting seat according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the bearing seat according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the push rod structure according to an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the heating plate according to an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the rotating support described in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Heating plate; 11-Floating support; 12-Inner plate; 13-Cover plate; 14-Heating wire; 15-Chamfer; 2-Frame; 21-Shaft seat; 211-Shaft hole; 2111-First hole; 2112-Second hole; 2113-Third hole; 2114-First end face; 2115-Second end face; 22-Ear seat; 23-End cap; 3-Floating unit; 31-Push rod; 311-Retaining ring; 312-Disc structure; 31 3-Keyway; 32-Compression spring; 33-Connecting seat; 331-Boss structure; 332-Through hole; 34-Pin; 351-Sleeve; 352-Frustum structure; 361-Anti-rotation sleeve; 362-Anti-rotation screw; 363-Key; 37-Sliding bushing; 4-Barrel body; 41-Ring rib; 5-Insulation layer; 61-Rotating support; 62-Rotating shaft; 63-First support plate; 64-Second support plate; 65-First connecting hole. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] It should be noted that in the description of this invention, the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "top," "bottom," "front," "back," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention. They are not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0030] Furthermore, although specific embodiments have been described herein, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features herein can be combined in ways not used as described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other embodiments.

[0031] To solve the above problems, such as Figures 1 to 8 As shown, the present invention provides a radial heating device for a barrel, including a heating plate assembly, a frame 2, and a floating unit 3. The projections of the heating plate assembly and the frame 2 on the horizontal plane are both semicircular. Two heating plate assemblies are respectively connected to the inner sides of the two frame 2s. The two frame 2s are rotatably connected to each other at one end along their circumferential direction. The two heating plate assemblies are used to surround and abut against the circumferential surface of the barrel 4. The heating plate assembly includes a plurality of arc-shaped heating plates 1 arranged in an array along the axial and circumferential directions of the barrel 4. The arc-shaped heating plates 1 are used to fit against the outer circumferential surface of the barrel 4. A gap is provided between the heating plates 1 to avoid the annular ribs 41 on the barrel 4. The plurality of floating units... Unit 3 is connected to multiple heating plates 1. The floating unit 3 includes a push rod 31, a compression spring 32, and a connecting seat 33. The frame 2 has a shaft hole 211. The push rod 31 passes through the shaft hole 211 and is used to slide along the shaft hole 211. The connecting seat 33 is connected to the end of the push rod 31 near the heating plate 1. The connecting seat 33 is used to rotate in the horizontal plane around the connection position between the connecting seat 33 and the push rod 31. The end of the connecting seat 33 away from the push rod 31 is connected to the heating plate 1. The compression spring 32 is sleeved on the push rod 31. The two ends of the compression spring 32 are respectively connected to the connecting seat 33 and the inner peripheral surface of the frame 2.

[0032] In this embodiment, by setting up a frame 2 and a heating plate assembly, both the frame 2 and the heating plate assembly have semi-circular projections on the horizontal plane. The two frame 2s and the two heating plate assemblies are enclosed to form a hollow cylinder. The frame 2 is connected to the outside of the heating plate assembly, and the inner circumferential surface of the frame 2 is connected to the hollow inner surface of the heating plate assembly. That is, the two sets of frame 2s and heating plate assemblies enclosed together can form two concentric hollow cylinders. The two frame 2s are arranged opposite each other, and one end of each frame 2 is rotatably connected in the circumferential direction. The relative rotation of the two frame 2s can drive the two heating plates... The heating plate assemblies rotate relative to each other, allowing the two heating plate assemblies to rotate and surround the circumferential surface of the barrel 4 to heat the barrel 4. Each heating plate assembly includes multiple heating plates 1, whose projection on the horizontal plane is arc-shaped, corresponding to the shape of the circumferential surface of the barrel 4. The multiple heating plates 1 are arranged in an array along the axial and circumferential directions of the barrel 4 to form the heating plate assembly. Each heating plate 1 has a floating unit 3 connected to its end furthest from the barrel 4. The end of the floating unit 3 furthest from the heating plate 1 is connected to the frame 2. The floating unit 3 includes a push rod 31, a compression spring 32, and a connecting rod. The frame 2 has a shaft hole 211 on the base 33. The push rod 31 passes through the shaft hole 211, with both ends of the push rod 31 protruding from the shaft hole 211. The connecting seat 33 is connected to the end of the push rod 31 near the heating plate 1 and is rotatably connected to the push rod 31. The connecting seat 33 can rotate in the horizontal plane around the end of the push rod 31. The compression spring 32 is sleeved around the push rod 31, with both ends of the compression spring 32 connected to the connecting seat 33 and the inner surface of the frame 2. When the two frames 2 rotate relative to each other, the heating plate 1 also rotates with the frames 2 until the heating plate 1 abuts against the circumference of the barrel 4. On the outer side surface, the frame 2 continues to rotate, compressing the compression spring 32. The pressure exerted by the compression spring 32 on the heating plate 1 through the connecting seat 33 can make the heating plate 1 stick tightly to the barrel 4. Since there is a gap between the heating plates 1, the gap in the vertical direction corresponds to the position of the ring rib 41 of the barrel 4. The heating plate 1 can avoid the ring rib 41 and stick tightly to the surface of the barrel 4. When using barrels 4 of different specifications, the heating plate 1 can also adjust its position with the compression spring 32 and rotate slightly around the end of the push rod 31 in the horizontal plane with the connecting seat 33 to adapt to barrels 4 of different specifications.

[0033] Specifically, the length of the frame 2 and the heating plate assembly along the axial direction of the barrel 4 corresponds to the length of the barrel 4. An insulation layer 5 is also provided between the frame 2 and the heating plate 1. The insulation layer 5 is provided with clearance holes to make way for the floating unit 3, so as to reduce the heat loss of the heating plate 1.

[0034] Optionally, such as Figures 3 to 5As shown, the floating unit 3 also includes a pin 34, the connecting seat 33 has a through hole 332, one end of the push rod 31 is inserted into the through hole 332, the width of the end of the push rod 31 inserted into the through hole 332 on the horizontal plane is smaller than the width of the through hole 332 on the horizontal plane, the end of the push rod 31 inserted into the connecting seat 33 and the connecting seat 33 both have pin holes along the axial direction of the barrel 4, and the pin 34 passes through the pin holes respectively provided on the push rod 31 and the connecting seat 33.

[0035] In this embodiment, the connecting seat 33 can be a quadrangular prism structure. A through hole 332 is opened on the surface of the connecting seat 33 away from the heating plate 1. The end of the push rod 31 is inserted into the through hole 332. The end of the push rod 31 inserted into the through hole 332 and the connecting seat 33 are both provided with pin holes along the axial direction of the barrel 4. A pin 34 is set to pass through the pin hole to connect the push rod 31 and the connecting seat 33 together. The dimension of the end of the push rod 31 inserted into the through hole 332 in the horizontal plane is narrower than the dimension of the through hole 332 in the horizontal plane. This allows the connecting seat 33 and the push rod 31 to rotate relative to each other around the pin 34 in the through hole 332, which makes it easy for the heating plate 1 to be attached to barrels 4 of different specifications.

[0036] Specifically, the connecting seat 33 can be bolted to the heating plate 1, and the end of the push rod 31 inserted into the through hole 332 can be arc-shaped. The arc-shaped structure reduces the interference between the end of the push rod 31 and the wall of the through hole 332, which facilitates the relative rotation of the connecting seat 33 and the push rod 31. The pin hole is through from top to bottom, and both ends of the pin 34 that protrude from the connecting seat 33 are provided with baffles to prevent the pin 34 from disengaging from the connecting seat 33.

[0037] Optionally, the dimension of one end of the push rod 31 inserted into the through hole 332 in the axial direction of the barrel body 4 is smaller than the dimension of the through hole 332 in the axial direction of the barrel body 4.

[0038] In this embodiment, by setting the axial dimension of the end of the push rod 31 inserted into the through hole 332 to be smaller than the axial dimension of the through hole 332 in the barrel 4, a gap exists between the push rod 31 and the upper and lower walls of the through hole 332. The push rod 31 can move up and down in the through hole 332 along the pin 34. Alternatively, the connecting seat 33 can move up and down relative to the push rod 31 along the pin 34. The heating plate 1 can move up and down with the connecting seat 33. The position of the heating plate 1 in the axial direction of the barrel 4 can be finely adjusted to avoid the ring rib 41, so that the heating plate 1 fits more closely to the barrel 4 and improves the heating efficiency.

[0039] Specifically, the diameter of the pin 34 is slightly smaller than the diameter of the pin hole, so that the push rod 31 and the connecting seat 33 can tilt slightly upward or downward relative to the pin 34. That is, the heating plate 1 can tilt vertically relative to the push rod 31, so that the heating plate 1 fits more closely to the barrel 4 and improves the heating efficiency.

[0040] Optionally, such as Figure 3 and Figure 4 As shown, the heating plate 1 is also provided with a floating support 11 on the side away from the barrel 4. The floating support 11 is provided with a groove structure at the end away from the heating plate 1. The connecting seat 33 is provided with a boss structure 331 at the end away from the push rod 31. The boss structure 331 is inserted into the groove structure.

[0041] In this embodiment, a floating support 11 is provided on the side of the heating plate 1 away from the barrel 4. The floating support 11 has a groove structure. The connecting seat 33 has a boss structure 331 on the side facing the heating plate 1. The boss structure 331 corresponds to the groove structure. The boss structure 331 can be inserted into the groove structure to connect the floating support 11 and the connecting seat 33, that is, to connect the floating unit 3 and the heating plate 1. The groove structure and the boss structure 331 play a positioning role.

[0042] Specifically, such as Figure 8 As shown, the floating support 11 can be welded to the heating plate 1, and the connecting seat 33 is bolted to the floating support 11. The heating plate 1 includes an inner plate 12, a cover plate 13, and a heating wire 14. Both the inner plate 12 and the cover plate 13 are rectangular plates with an arc shape projected on the horizontal plane. The inner arc surface of the inner plate 12 fits against the barrel 4. The outer side of the inner plate 12 has a serpentine groove with a semi-circular cross section. The heating wire 14 is placed in the groove. The cover plate 13 covers the groove and is bolted to the inner plate 12. The cover plate 13 has an opening for the heating wire 14 to pass through. The center of the cover plate 13 has a square opening, and the floating support 11 is welded into the square opening. Each heating plate 1 corresponds to a temperature sensor. The detection head of the temperature sensor is inserted into the surface of the heating plate 1 close to the barrel 4 to detect the temperature of the barrel 4. The temperature of the heating plate 1 can be adjusted according to the detection result to improve the heating efficiency.

[0043] Optionally, such as Figure 6As shown, the shaft hole 211 includes a first hole 2111, a second hole 2112, and a third hole 2113, which are coaxially arranged from the side of the frame 2 away from the heating plate 1 to the side closer to the heating plate 1. The diameters of the first hole 2111 and the third hole 2113 are both larger than the diameter of the second hole 2112. The end face between the first hole 2111 and the second hole 2112 is the first end face 2114, and the end face between the second hole 2112 and the third hole 2113 is the second end face 2115. The floating unit 3 also includes a sleeve 351, which passes through the second hole 2112. A frustum structure 352 is connected to the periphery of the sleeve 351 located at the first hole 2111. The frustum structure 352 is bolted to the first end face 2114. The push rod 31 passes through the sleeve 351. A retaining ring 311 is provided at the end of the push rod 31 away from the heating plate 1. The retaining ring 311 is used to abut against the end face of the sleeve 351 away from the heating plate 1. A disc structure 312 is provided on the periphery of the end of the push rod 31 near the connecting seat 33. The compression spring 32 is sleeved on the periphery of the sleeve 351. The two ends of the compression spring 32 abut against the second end face 2115 and the disc structure 312, respectively.

[0044] In this embodiment, the shaft hole 211 is divided into a first hole 2111, a second hole 2112, and a third hole 2113 with different diameters. The first hole 2111, the second hole 2112, and the third hole 2113 are arranged sequentially from the side of the frame 2 away from the heating plate 1 to the side closer to the heating plate 1. The diameter of the first hole 2111 and the diameter of the third hole 2113 are both larger than the diameter of the second hole 2112. The end face between the first hole 2111 and the second hole 2112 is the first end face 2114. The second hole 2112 and the third hole... The end face between 2113 is the second end face 2115. A sleeve 351 is provided through the second hole 2112. The end of the sleeve 351 away from the heating plate 1 has a frustum structure 352. The frustum structure 352 is integrated with the sleeve 351. The frustum structure 352 can be bolted to the first end face 2114 to connect the sleeve 351 and the frame 2 together. The push rod 31 passes through the hole in the sleeve 351. A disc structure 312 is connected to the periphery of the end of the push rod 31 near the connecting seat 33. The disc structure 312 and the push rod 31 The compression spring 32 is integrated and sleeved around the sleeve 351. At this time, the compression spring 32 is also located around the push rod 31. One end of the compression spring 32 is connected to and abuts against the second end face 2115, which faces the heating plate 1. The frame 2 compresses the compression spring 32 through the second end face 2115. The other end of the compression spring 32 abuts against the disc structure 312. The disc structure 312 is connected to the connecting seat 33 via the push rod 31. The connecting seat 33 compresses the compression spring 32 through the disc structure 312. When the structure 312 and the second end face 2115 compress the spring 32, the push rod 31 can slide inside the sleeve 351, which provides a sliding path for the push rod 31. The sleeve 351 has a relatively long length along the axial direction, which guides the push rod 31. The end of the push rod 31 away from the heating plate 1 is also provided with a retaining ring 311. When the two frames 2 are rotated in opposite directions, the spring 32 extends, and the retaining ring 311 can abut against the end face of the sleeve 351 away from the heating plate 1, preventing the spring 32 from pushing the push rod 31 and causing it to come out of the sleeve 351.

[0045] Specifically, the disc structure 312 has a circular groove on the side facing the compression spring 32, which makes it easier for the compression spring 32 to be connected in the circular groove. The retaining ring 311 and the push rod 31 can be connected by bolts.

[0046] Optionally, such as Figure 3 and Figure 4As shown, the floating unit 3 further includes an anti-rotation sleeve 361 and an anti-rotation screw 362. The anti-rotation sleeve 361 is sleeved on the outer peripheral surface of the push rod 31 and is interference-fitted with the inner peripheral surface of the sleeve 351. Both the inner peripheral surface of the anti-rotation sleeve 361 and the outer surface of the push rod 31 are provided with keyways 313. The keyways 313 penetrate the end face of the anti-rotation sleeve 361 away from the heating plate 1. The anti-rotation sleeve 361 and the push rod 31 are keyed together. Both the surfaces of the anti-rotation sleeve 361 and the sleeve 351 that are connected to each other are provided with threads. The two sections of the threads are connected to form a threaded hole. The anti-rotation screw 362 is threadedly connected to the threaded hole.

[0047] In this embodiment, an anti-rotation sleeve 361 is fitted around the periphery of the push rod 31. The anti-rotation sleeve 361 is disposed inside the sleeve 351 and is interference-fitted with the sleeve 351, making it difficult for the anti-rotation sleeve 361 to move relative to the sleeve 351. Half-turn threads are respectively provided at opposite positions on the abutting surfaces of the anti-rotation sleeve 361 and the sleeve 351, and the two threaded sections are connected to form a complete threaded hole. The anti-rotation screw 362 is threaded into the threaded hole, connecting the anti-rotation sleeve 361 and the sleeve 351 together, preventing the anti-rotation sleeve 361 from rotating relative to the sleeve 351. Keyways 313 are provided on the connecting surfaces of the anti-rotation sleeve 361 and the push rod 31, and the anti-rotation sleeve 361 and the push rod 31 are keyed together, preventing the push rod 31 from moving relative to the sleeve 351. To prevent the anti-rotation sleeve 361 from rotating, i.e., from rotating relative to the sleeve 351 and the frame 2 bolted to the sleeve 351, the heating plate 1 is prevented from driving the push rod 31 and rotating around the axis, thus preventing the heating plate 1 from tightly fitting against the surface of the barrel 4. The key 363 can be connected to the push rod 31 by a countersunk screw. The keyway 313 is connected to the end face of the anti-rotation sleeve 361 away from the heating plate 1. When the heating plate 1 compresses the spring 32, the push rod 31 moves along the sleeve 351 to the side away from the heating plate 1, causing the key 363 to move out of the opening on the end face of the anti-rotation sleeve 361 along the keyway 313. When the spring 32 extends, the push rod 31 causes the key 363 to move towards the heating plate 1.

[0048] Optionally, such as Figure 3 and Figure 4 As shown, the floating unit 3 also includes a sliding bushing 37, which is sleeved on the outer peripheral surface of the push rod 31 and has an interference fit with the inner peripheral surface of the sleeve 351.

[0049] In this embodiment, by sleeved with a sliding bushing 37 on the periphery of the push rod 31, the sliding bushing 37 is disposed inside the sleeve 351 and is interference-fitted with the sleeve 351. The sliding bushing 37 can assist the push rod 31 to slide away from or towards the heating plate 1 under the action of the compression spring 32.

[0050] Specifically, the sliding bushing 37 and the anti-rotation sleeve 361 can be arranged side by side, with the anti-rotation sleeve 361 located on the side away from the heating plate 1 and the sliding bushing 37 located on the side closer to the heating plate 1.

[0051] Optionally, such as Figure 1 and Figure 6 As shown, the frame 2 is provided with a bearing seat 21, and the shaft hole 211 is formed on the bearing seat 21.

[0052] In this embodiment, a bearing seat 21 is provided on the frame 2, with one bearing seat 21 corresponding to one floating unit 3. The bearing seat 21 is relatively thicker than the frame 2, providing a position for the shaft hole 211.

[0053] Specifically, the first hole 2111, the second hole 2112 and the third hole 2113 are all opened on the bearing seat 21 to facilitate the connection of the sleeve 351 to the first end face 2114. The bearing seat 21 is also provided with an end cover 23, which is bolted to the bearing seat 21 and covers the first hole 2111 to protect the floating unit 3.

[0054] Optionally, such as Figure 1 , Figure 2 and Figure 9 As shown, the radial heating device for the barrel also includes a rotating support 61 and a rotating shaft 62. The rotating support 61 extends along the axial direction of the barrel 4. Multiple sets of first support plates 63 and second support plates 64 are evenly distributed on the rotating support 61 along the axial direction of the barrel 4. Multiple ear seats 22 are provided on one adjacent end of each of the two frame bodies 2. The multiple ear seats 22 on each frame body 2 correspond to multiple sets of first support plates 63 and second support plates 64. Two ear seats 22 located in the same horizontal plane on the two frame bodies 2 are clamped between the corresponding sets of first support plates 63 and second support plates 64. Two rotating shafts 62 are respectively passed through the two ear seats 22, as well as the first support plates 63 and the second support plates 64, so as to rotatably connect the two frame bodies 2 to the rotating support 61.

[0055] In this embodiment, a rotating support 61 extending axially along the barrel 4 is provided. On the side surface of the rotating support 61 facing the barrel 4, multiple sets of first support plates 63 and second support plates 64 are provided. Each of the two frames 2 has multiple ear seats 22 at one end along the axial direction of the barrel 4. The number and position of the ear seats 22 on each frame 2 correspond to the number and position of the first support plates 63 and the second support plates 64. The ear seats 22 that are opposite each other on the two frames 2 form a group. A group of ear seats 22 is sandwiched between each group of first support plates 63 and second support plates 64. A second connecting hole is opened on the ear seat 22 along the axial direction of the barrel 4. Two first connecting holes 65 are opened on the first support plates 63 and the second support plates 64. Two rotating shafts 62 pass through the second connecting holes on the ear seats 22 on the two frames 2, and the first connecting holes 65 on the first support plates 63 and the second support plates 64 corresponding to the second connecting holes, so that the two frames 2 are rotatably connected to the rotating support 61, which facilitates the two frames 2 to rotate relative to each other or in opposite directions.

[0056] Specifically, in each group of first support plate 63 and second support plate 64, the first support plate 63 is located above the second support plate 64, and the surface of the second support plate 64 facing the first support plate 63 is provided with a countersunk flat. The countersunk flat and the first connecting hole 65 on the second support plate 64 are coaxially arranged. The first connecting hole 65 on the first support plate 63 is fitted with a bushing, and the first connecting hole 65 on the second support plate 64 is provided with a bearing. The end face of the bearing is set in the countersunk flat. The bearing and bushing are used in conjunction to facilitate the rotation of the frame 2 around the rotating shaft 62. Both ends of the rotating shaft 62 are threaded with end plates.

[0057] Optionally, such as Figure 8 As shown, the heating plate 1 has chamfers 15 at both ends near the annular rib 41.

[0058] In this embodiment, by setting chamfered structures at both ends of the heating plate 1 near the steel barrel rib 41, the chamfer 15 can avoid the rib 41, so that the heating plate 1 can fit against the surface of the barrel 4, avoiding the situation where the heating plate 1 abuts against the rib 41, and the rib 41 creates a gap between the heating plate 1 and the surface of the barrel 4, which affects the heating efficiency.

[0059] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A radial heating device for a barrel body, characterized in that, The device includes a heating plate assembly, a frame (2), and floating units (3). The projections of the heating plate assembly and the frame (2) on the horizontal plane are both semicircular. Two heating plate assemblies are respectively connected to the inner sides of the two frames (2). The two frames (2) are rotatably connected to each other at one end along their circumferential direction. The two heating plate assemblies are used to surround and abut against the circumferential surface of the barrel (4). The heating plate assembly includes a plurality of arc-shaped heating plates (1) arranged in an array along the axial and circumferential directions of the barrel (4). The arc-shaped heating plates (1) are used to fit against the outer circumferential surface of the barrel (4). There is a gap between the heating plates (1) to avoid the ring ribs (41) on the barrel (4). The plurality of floating units (3) are correspondingly connected to the plurality of heating plates (1). The floating unit (3) includes a push rod (31), a compression spring (32), and a connecting seat (33). The frame (2) has a shaft hole (211). The push rod (31) passes through the shaft hole (211) and is used to slide along the shaft hole (211). The connecting seat (33) is connected to the end of the push rod (31) near the heating plate (1). The connecting seat (33) is used to rotate in the horizontal plane around the connection position between the connecting seat (33) and the push rod (31). The end of the connecting seat (33) away from the push rod (31) is connected to the heating plate (1). The compression spring (32) is sleeved on the push rod (31). The two ends of the compression spring (32) are respectively connected to the connecting seat (33) and the inner surface of the frame (2). The floating unit (3) also includes a pin (34), the connecting seat (33) has a through hole (332), one end of the push rod (31) is inserted into the through hole (332), the width of the end of the push rod (31) inserted into the through hole (332) on the horizontal plane is smaller than the width of the through hole (332) on the horizontal plane, the end of the push rod (31) inserted into the connecting seat (33) and the connecting seat (33) are both provided with pin holes along the axial direction of the barrel (4), and the pin (34) passes through the pin holes respectively provided on the push rod (31) and the connecting seat (33).

2. The radial heating device for a barrel body according to claim 1, characterized in that, The dimension of the end of the push rod (31) inserted into the through hole (332) in the axial direction of the barrel body (4) is smaller than the dimension of the through hole (332) in the axial direction of the barrel body (4).

3. The radial heating device for a barrel according to claim 1, characterized in that, The heating plate (1) is provided with a floating support (11) on the side away from the barrel (4). The floating support (11) has a groove structure at the end away from the heating plate (1). The connecting seat (33) has a boss structure (331) at the end away from the push rod (31). The boss structure (331) is inserted into the groove structure.

4. The radial heating device for a barrel body according to claim 1, characterized in that, The shaft hole (211) includes a first hole (2111), a second hole (2112), and a third hole (2113) arranged coaxially from the side of the frame (2) away from the heating plate (1) to the side closer to the heating plate (1). The diameter of the first hole (2111) and the diameter of the third hole (2113) are both larger than the diameter of the second hole (2112). The end face between the first hole (2111) and the second hole (2112) is the first end face (2114), and the end face between the second hole (2112) and the third hole (2113) is the second end face (2115). The floating unit (3) also includes a sleeve (351), which passes through the second hole (2112). 51) A frustum structure (352) is connected to a portion of the periphery of the first hole (2111). The frustum structure (352) is bolted to the first end face (2114). The push rod (31) passes through the sleeve (351). A retaining ring (311) is provided at the end of the push rod (31) away from the heating plate (1). The retaining ring (311) is used to abut against the end face of the sleeve (351) away from the heating plate (1). A disc structure (312) is provided on the periphery of the end of the push rod (31) near the connecting seat (33). The compression spring (32) is sleeved on the periphery of the sleeve (351). The two ends of the compression spring (32) abut against the second end face (2115) and the disc structure (312) respectively.

5. The radial heating device for a barrel body according to claim 4, characterized in that, The floating unit (3) further includes an anti-rotation sleeve (361) and an anti-rotation screw (362). The anti-rotation sleeve (361) is sleeved on the outer peripheral surface of the push rod (31) and is press-fitted with the inner peripheral surface of the sleeve (351). The inner peripheral surface of the anti-rotation sleeve (361) and the outer surface of the push rod (31) are both provided with keyways (313). The keyways (313) penetrate the end face of the anti-rotation sleeve (361) away from the heating plate (1). The anti-rotation sleeve (361) and the push rod (31) are keyed together. The surfaces on which the anti-rotation sleeve (361) and the sleeve (351) are connected to each other are provided with threads. The two sections of the threads are connected to form a threaded hole. The anti-rotation screw (362) is threadedly connected to the threaded hole.

6. The radial heating device for a barrel body according to claim 4, characterized in that, The floating unit (3) also includes a sliding bushing (37), which is sleeved on the outer peripheral surface of the push rod (31) and has an interference fit with the inner peripheral surface of the sleeve (351).

7. The radial heating device for a barrel according to claim 1, characterized in that, The frame (2) is provided with a bearing seat (21), and the shaft hole (211) is opened on the bearing seat (21).

8. The radial heating device for a barrel according to claim 1, characterized in that, It also includes a rotating support (61) and a rotating shaft (62). The rotating support (61) extends along the axial direction of the barrel (4). The rotating support (61) is provided with multiple sets of first support plates (63) and second support plates (64) evenly distributed along the axial direction of the barrel (4). Multiple ear seats (22) are provided on one adjacent end of each of the two frames (2). The multiple ear seats (22) on each frame (2) correspond to multiple sets of first support plates (63) and second support plates (64). The two ear seats (22) on the two frames (2) located in the same horizontal plane are clamped between the corresponding sets of first support plates (63) and second support plates (64). The two rotating shafts (62) pass through the two ear seats (22), as well as the first support plates (63) and the second support plates (64), respectively, so as to rotatably connect the two frames (2) to the rotating support (61).

9. The radial heating device for a barrel body according to claim 1, characterized in that, The heating plate (1) has chamfers (15) at both ends near the ring rib (41).

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