Fin trimming device for plate-fin heat exchanger

Abstract

The fin trimming device for the plate-fin heat exchanger relates to the technical field of trimming devices and comprises an operation table, supporting plates are fixed to the left end and the right end of the outer top face of the operation table, a top plate is fixed to the outer top faces of the two supporting plates together, and a connecting plate is arranged on the outer bottom face of the top plate. And a moving module is fixed to the outer bottom face of the connecting plate, a transverse plate is fixedly installed at the moving end of the moving module, grinding machines are arranged at the front end and the rear end of the outer bottom face of the transverse plate correspondingly, a displacement assembly used for driving the two grinding machines to move relatively is arranged in the transverse plate, and a clamping assembly is arranged on the outer top face of the operation table. Through mutual cooperation of the first driving motor, the worm gear, the worm, the second rotating shaft rod and the sliding plate, the clamping plates can be driven to relatively move along the interior of the straight opening, heat exchanger fins with different lengths on the operation table are limited and clamped, and therefore the heat exchanger fins are in a fixed state all the time in the polishing and finishing process.

Description

Technical Field

[0001] This utility model relates to the field of trimming device technology, and in particular to a fin trimming device for plate-fin heat exchangers. Background Technology

[0002] Plate-fin heat exchangers are common heat exchange devices used to transfer heat between fluids. Fins are key components of the heat exchanger because they increase the heat exchange surface area and improve heat exchange efficiency. To ensure the proper functioning of the heat exchanger, fin trimming is sometimes necessary. Fin trimming devices can improve the performance and lifespan of plate-fin heat exchangers, ensuring they maintain high heat exchange capacity during long-term use.

[0003] For example, a Chinese patent discloses a fin trimming device for a plate-fin heat exchanger (publication number CN222021300U), which includes an operating table. Both sides of the top of the operating table are fixedly connected to brackets. A limiting groove is provided on the bracket. A limiting block is slidably connected to the inner wall of the limiting groove. A bearing plate is fixedly connected between two limiting blocks.

[0004] However, the aforementioned publicly available document describes a device that uses the outer casing to rotate a threaded rod, causing the sliding plate to move left and right. This allows the grinder to be adjusted to accommodate heat exchanger fins of different widths, enabling it to adapt to fins of varying thicknesses and widths. This reduces the need for frequent equipment changes, lowers production costs, and improves efficiency. However, in practice, due to the distance between the grinder and the roller, the stability of the heat exchanger fins cannot be guaranteed once they disengage from the roller. This leads to erratic movement of the fins and poor trimming results. Therefore, those skilled in the art have provided a fin trimming device for plate-fin heat exchangers to address the problems mentioned in the background section. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a fin trimming device for plate-fin heat exchangers, which solves the problem mentioned in the background art that, due to the certain distance between the grinder and the roller, the heat exchanger fins cannot be guaranteed to maintain stability after they separate from the roller, resulting in the heat exchanger fins easily moving around and thus leading to poor trimming effect.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a fin trimming device for plate-fin heat exchangers, comprising an operating table, with support plates fixed at both ends of the outer top surface of the operating table, a top plate fixed together on the outer top surfaces of the two support plates, a connecting plate on the outer bottom surface of the top plate, a movable module fixed on the outer bottom surface of the connecting plate, a horizontal plate fixedly installed at the movable end of the movable module, a grinding machine at both the front and rear ends of the outer bottom surface of the horizontal plate, a displacement component for driving the relative movement of the two grinding machines inside the horizontal plate, and a clamping component on the outer top surface of the operating table;

[0007] The displacement assembly includes a square cavity 1 located at the center of the horizontal plate, and square cavities 2 on the outer walls of both the front and rear sides of the horizontal plate. Rotating shafts 1 are rotatably mounted on the inner walls of both the front and rear sides of the square cavity 1. A bevel gear 1 is fixed to one end of each of the two rotating shafts 1, while the opposite ends extend into the interior of the two square cavities 2 respectively, and threads are provided on the outer walls of both. Square sleeves are threaded onto the outer walls of the two rotating shafts 1 inside the two square cavities 2. Vertical plates are provided on the outer walls of both the front and rear sides of the horizontal plate. The two square sleeves are fixed to the two vertical plates, and the two grinding machines are fixed to the two vertical plates.

[0008] As a further technical solution of this utility model, the clamping assembly includes through-type straight openings at both ends of the top surface of the operating table. A rectangular cavity is provided at the center of the operating table. Rotating shafts are rotatably installed on the inner walls of the left and right sides of the rectangular cavity. The two ends of the rotating shafts extend into the interior of the two straight openings respectively, and threads are provided on the outer walls of both shafts. Slide plates are threaded into the interior of the two straight openings and on the outer walls of the rotating shafts. One end of each slide plate extends to the top surface of the operating table and is fixed with a clamping plate.

[0009] As a further technical solution of this utility model, a worm gear is fixedly installed inside the rectangular cavity and on the outer wall of the rotating shaft two. A worm is rotatably installed on the inner walls of the front and rear sides of the rectangular cavity and below the worm gear. A drive motor one is fixedly installed on the outer wall of the front side of the operating table. One end of the worm extends rotatably to the outer wall of the front side of the operating table and is fixedly connected to the output end of the drive motor one. The worm gear and the worm are meshed with each other.

[0010] As a further technical solution of this utility model, a second drive motor is fixedly installed on the right outer wall of the horizontal plate, a third rotating shaft is rotatably installed on the inner side wall of the first square cavity, a second bevel gear is fixedly installed at one end of the second rotating shaft, and the other end extends rotatably to the right outer wall of the horizontal plate and is fixedly connected to the output end of the second drive motor, and a protective shell is fixed to the right outer wall of the horizontal plate outside the second drive motor by bolts.

[0011] As a further technical solution of this utility model, an electric push rod is fixedly installed at the center of the outer top surface of the top plate. The output end of the electric push rod extends to the outer bottom surface of the top plate and is fixedly connected to the connecting plate. A through-type vertical slot is opened on the outer side wall of both support plates. The left and right ends of the connecting plate slide in the interior of the two sets of vertical slots through T-shaped blocks.

[0012] As a further technical solution of this utility model, the four corners of the outer bottom surface of the operating table are all fixed with support legs.

[0013] This invention provides a fin trimming device for plate-fin heat exchangers, which has the following advantages compared with the prior art:

[0014] 1. This design provides a fin trimming device for plate-fin heat exchangers. Through the coordinated operation of a drive motor, worm gear, worm, rotating shaft, and sliding plate, the clamping plates can move relative to each other along the inside of the straight opening, thereby limiting and clamping heat exchanger fins of different lengths on the operating table. This ensures that the heat exchanger fins remain fixed during the grinding and trimming process, preventing them from moving randomly and improving practicality.

[0015] 2. This design provides a fin trimming device for plate-fin heat exchangers. Through the interaction of a drive motor, a rotating shaft, a rotating shaft, a bevel gear, and a bevel gear, two square sleeves can be driven to move back and forth inside a square cavity. This, in turn, causes the vertical plate to move two grinding machines relative to each other, thereby enabling the trimming of heat exchanger fins of different widths and further improving practicality. Attached Figure Description

[0016] Figure 1 A first three-dimensional structural schematic diagram of a fin trimming device for a plate-fin heat exchanger;

[0017] Figure 2 This is a schematic diagram of a second three-dimensional structure of a fin trimming device for a plate-fin heat exchanger.

[0018] Figure 3 This is a first cross-sectional three-dimensional structural diagram of a fin trimming device for a plate-fin heat exchanger.

[0019] Figure 4 This is a second cross-sectional three-dimensional structural diagram of a fin trimming device for plate-fin heat exchangers.

[0020] In the picture:

[0021] 1. Operating platform; 101. Support plate; 102. Top plate; 103. Connecting plate; 104. Moving module; 105. Horizontal plate; 106. Grinding machine; 107. Support leg;

[0022] 2. Displacement assembly; 201. Square cavity one; 202. Square cavity two; 203. Rotating shaft one; 204. Bevel gear one; 205. Square sleeve; 206. Vertical plate; 207. Drive motor two; 208. Rotating shaft three; 209. Bevel gear two; 210. Protective housing;

[0023] 3. Clamping assembly; 301. Straight opening; 302. Rectangular cavity; 303. Rotating shaft two; 304. Slide plate; 305. Clamping plate; 306. Worm gear; 307. Worm; 308. Drive motor one;

[0024] 4. Electric push rod; 401. Vertical slot; 402. T-block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution for a fin trimming device for plate-fin heat exchangers: it includes an operating platform 1, with support legs 107 fixed at the four corners of the outer bottom surface of the operating platform 1. By tightening the bolts on the support legs 107, the operating platform 1 can be fixed in the working area to ensure stability during use and facilitate later movement as needed. Support plates 101 are fixed at the left and right ends of the outer top surface of the operating platform 1, and a top plate 102 is fixed together on the outer top surface of the two support plates 101. A connecting plate 103 is provided on the outer bottom surface of the top plate 102, and a moving module 104 is fixed on the outer bottom surface of the connecting plate 103. A horizontal plate 105 is fixedly installed at the moving end of the moving module 104. Grinding machines 106 are provided at the front and rear ends of the outer bottom surface of the horizontal plate 105. The moving module is controlled and activated to drive the horizontal plate 105 to move laterally in the left and right direction on the outer bottom surface of the top plate 102, so that the two grinding machines 106 can trim the heat exchanger fins of different lengths on the operating platform 1, increasing the flexibility of the device.

[0027] An electric push rod 4 is fixedly installed at the center of the outer top surface of the top plate 102. The output end of the electric push rod 4 extends to the outer bottom surface of the top plate 102 and is fixedly connected to the connecting plate 103. The outer side walls of the two support plates 101 are provided with through vertical slots 401. The left and right ends of the connecting plate 103 slide in the interior of the two sets of vertical slots 401 through T-shaped blocks 402. By controlling and starting the electric push rod 4, the connecting plate 103 is pushed to move downward. During the movement, the T-shaped blocks 402 slide in the interior of the vertical slots 401, ensuring the stability of the movement of the connecting plate 103. This allows the grinding machine 106 to perform trimming operations on heat exchanger fins of different thicknesses, further increasing the flexibility of the device.

[0028] The interior of the horizontal plate 105 is equipped with a displacement assembly 2 for driving the relative movement of two sets of grinding machines 106. The displacement assembly 2 includes a square cavity 201 located at the center of the interior of the horizontal plate 105, and square cavities 202 on the outer walls of the front and rear sides of the horizontal plate 105. Rotating shafts 203 are rotatably mounted on the inner walls of the front and rear sides of the square cavities 201. A bevel gear 204 is fixed to one end of each of the two rotating shafts 203, while the opposite ends extend into the interior of the two square cavities 202, and threads are provided on the outer walls of each shaft. Inside the second cavity 202, square sleeves 205 are threaded onto the outer walls of the two rotating shafts 203. Vertical plates 206 are provided on the outer walls of the front and rear sides of the horizontal plate 105. The two square sleeves 205 are fixed to the two vertical plates 206. The two grinding machines 106 are also fixed to the two vertical plates 206. A drive motor 207 is fixedly installed on the right outer wall of the horizontal plate 105. A rotating shaft 208 is rotatably mounted on the inner wall of the square cavity 201. A bevel gear 209 is fixedly mounted on one end of the rotating shaft 203, while the other end extends rotatably to the horizontal cavity 202. On the right outer wall of plate 105, and fixedly connected to the output end of drive motor 207, bevel gear 209 meshes with two bevel gears 204. A protective housing 210 is bolted to the right outer wall of plate 105, outside drive motor 207 (the protective housing 210 protects drive motor 207 and facilitates replacement via bolt thread connection). Drive motor 207 is controlled and started to drive rotating shaft 3 208, which in turn drives bevel gear 209 to rotate inside square cavity 201. Under the meshing connection characteristics of wheel 209, the two bevel gears 204 are driven to rotate synchronously in the square cavity 201, which in turn drives the rotating shaft 203 to rotate inside the square cavity 202. Since the threads at both ends of the rotating shaft 203 are opposite, the square sleeve 205 is driven to slide inside the square cavity 202, thereby driving the vertical plate 206 to move relative to each other or away from each other on the front and rear sides outside the horizontal plate 105. This allows the two grinding machines 106 to move relative to each other, enabling them to perform trimming operations on heat exchanger fins of different widths, thus improving practicality.

[0029] A clamping assembly 3 is provided on the outer top surface of the operating table 1. The clamping assembly 3 includes through-holes 301 at both ends of the outer top surface of the operating table 1. A rectangular cavity 302 is provided at the center of the operating table 1. Rotating shafts 303 are rotatably mounted on the inner walls of the left and right sides of the rectangular cavity 302. The two ends of the rotating shafts 303 extend into the interior of the two through-holes 301, and threads are provided on the outer walls of both shafts. Slide plates 304 are threadedly fitted inside the two through-holes 301 and on the outer walls of the rotating shafts 303 (while the left and right sides of the two slide plates 304 are also connected to the outer walls of the rotating shafts 303). A bellows sleeve is provided on both sides of the right side, outside the rotating shaft 2 303, to prevent debris generated during grinding and finishing from falling on the rotating shaft 2 303 and affecting the transmission effect. One end of the two sliding plates 304 extends to the outer top surface of the operating table 1 and is fixed with a clamping plate 305. A worm gear 306 is fixedly installed inside the rectangular cavity 302 and on the outer wall of the rotating shaft 2 303. A worm 307 is rotatably installed on the inner walls of the front and rear sides of the rectangular cavity 302 and below the worm gear 306. A drive motor 1 308 is fixedly installed on the front outer wall of the operating table 1. One end of the worm 307 The rotating shaft extends to the front outer wall of the operating table 1 and is fixedly connected to the output end of the drive motor 308. The worm gear 306 and worm 307 are meshed together. When the heat exchanger fins to be repaired are placed on the operating table 1, the drive motor 308 is then controlled and started to drive the worm 307 to drive the worm gear 306 to rotate inside the rectangular cavity 302, thereby driving the rotating shaft 303 to rotate inside the two straight openings 301. At the same time, since the threads at both ends of the rotating shaft 303 are opposite, the two sliding plates 304 can move in opposite directions inside the straight openings 301. The relative movement of the two sliding plates 304, moving closer or further apart, is ensured by the internal fixed sliding rod of the straight opening 301, which in turn drives the clamping plate 305 to limit and clamp the heat exchanger fins of different lengths on the operating table 1 (after limiting and clamping, the worm gear 307 is locked by the shaft locking device installed on the front outer wall of the operating table 1 to prevent the worm gear 307 from spinning and affecting the clamping effect). This ensures that the heat exchanger fins remain fixed during the grinding and finishing process, preventing the heat exchanger fins from moving randomly and improving practicality.

[0030] The working principle of this utility model is as follows: When in use, the heat exchanger fins are first placed on the operating table 1, and then the drive motor 308 is started to drive the worm gear 307 to drive the worm wheel 306 to rotate inside the rectangular cavity 302, thereby driving the rotating shaft 303 to rotate inside the two straight openings 301, so that the two sliding plates 304 with the clamping plates 305 limit and clamp the heat exchanger fins on both sides.

[0031] Simultaneously, the electric push rod 4 drives the connecting plate 103 to move the horizontal plate 105 downwards. During the movement, the drive motor 207 drives the rotating shaft 208 to rotate the bevel gear 209 inside the square cavity 201, and drives the two bevel gears 204 to rotate synchronously. This causes the rotating shaft 203 to rotate inside the square cavity 202, thereby driving the square sleeve 205 to slide inside the square cavity 202. This causes the vertical plate 206 to move relative to the front and rear sides outside the horizontal plate 105, so that the two grinders 106 can move relative to each other and fit against the sides of the heat exchanger fins.

[0032] At the same time, the grinding machine 106 is started to grind and trim both sides of the heat exchanger fins. Then, the moving mold is started to drive the horizontal plate 105 to move laterally in the left and right directions, so that the grinding machine 106 grinds and trims both sides of the heat exchanger fins.

[0033] It should be noted that the movable module 104 is a module that can move left and right in the prior art. The grinding machine 106 and the shaft locking device are both conventional technologies. Their working principles will not be described in detail in this article. All electrical components mentioned in this article are electrically connected to the controller and the power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Therefore, the control method and circuit connection will not be explained in detail.

[0034] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A fin trimming device for plate-fin heat exchangers, characterized in that, The system includes an operating table (1), with support plates (101) fixed at both ends of the top surface of the operating table (1). The top surfaces of the two support plates (101) are jointly fixed with a top plate (102). The bottom surface of the top plate (102) is provided with a connecting plate (103). The bottom surface of the connecting plate (103) is fixed with a moving module (104). The moving end of the moving module (104) is fixedly installed with a horizontal plate (105). The bottom surface of the horizontal plate (105) is provided with a grinding machine (106) at both ends. The interior of the horizontal plate (105) is provided with a displacement component (2) for driving the two grinding machines (106) to move relative to each other. The top surface of the operating table (1) is provided with a clamping component (3). The displacement component (2) includes a square cavity 1 (201) located at the center of the horizontal plate (105). Square cavities 2 (202) are provided on the outer walls of the front and rear sides of the horizontal plate (105). Rotating shafts 1 (203) are rotatably installed on the inner walls of the front and rear sides of the square cavity 1 (201). One end of each of the two rotating shafts 1 (203) is fixed with a bevel gear 1 (204), while the opposite ends extend into the interior of the two square cavities 2 (202) respectively. Threads are provided on the outer walls of the two square cavities 2 (202). Square sleeves (205) are threaded onto the outer walls of the two rotating shafts 1 (203) inside the two square cavities 2 (202). Vertical plates (206) are provided on the outer walls of the front and rear sides of the horizontal plate (105). The two square sleeves (205) are fixed to the two vertical plates (206). The two grinding machines (106) are fixed to the two vertical plates (206). The clamping assembly (3) includes a through-type straight opening (301) on the left and right ends of the top surface of the operating table (1). A rectangular cavity (302) is provided at the center of the operating table (1). A rotating shaft (303) is rotatably installed on the inner walls of the left and right sides of the rectangular cavity (302). The two ends of the rotating shaft (303) extend into the interior of the two straight openings (301) respectively, and the outer walls of both shafts are threaded. Slide plates (304) are threaded into the interior of the two straight openings (301) and on the outer walls of the rotating shaft (303). One end of the two slide plates (304) extends to the top surface of the operating table (1) and is fixed with a clamping plate (305). A worm gear (306) is fixedly installed inside the rectangular cavity (302) and on the outer wall of the rotating shaft (303). A worm (307) is rotatably installed on the inner walls of the front and rear sides of the rectangular cavity (302) and below the worm gear (306). A drive motor (308) is fixedly installed on the outer wall of the front side of the operating table (1). One end of the worm (307) extends rotatably to the outer wall of the front side of the operating table (1) and is fixedly connected to the output end of the drive motor (308). The worm gear (306) and the worm (307) are meshed with each other.

2. The fin trimming device for a plate-fin heat exchanger according to claim 1, characterized in that, A second drive motor (207) is fixedly installed on the right outer wall of the horizontal plate (105). A third rotating shaft (208) is rotatably installed on the inner side wall of the first square cavity (201). A second bevel gear (209) is fixedly installed at one end of the second rotating shaft (303), while the other end extends rotatably to the right outer wall of the horizontal plate (105) and is fixedly connected to the output end of the second drive motor (207). The second bevel gear (209) is meshed with two first bevel gears (204). A protective shell (210) is fixed to the right outer wall of the horizontal plate (105) and outside the second drive motor (207) by bolts.

3. The fin trimming device for a plate-fin heat exchanger according to claim 1, characterized in that, An electric push rod (4) is fixedly installed at the center of the outer top surface of the top plate (102). The output end of the electric push rod (4) extends to the outer bottom surface of the top plate (102) and is fixedly connected to the connecting plate (103). The outer side walls of the two support plates (101) are provided with through vertical slots (401). The left and right ends of the connecting plate (103) slide in the interior of the two sets of vertical slots (401) through T-shaped blocks (402).

4. The fin trimming device for a plate-fin heat exchanger according to claim 1, characterized in that, The four corners of the outer bottom surface of the operating table (1) are all fixed with support legs (107).

Images