Surface polishing device for heat exchanger finned tube machining

Abstract

The invention discloses a surface grinding device for heat exchanger finned tube machining, and relates to the technical field of finned tube machining. The front side and the rear side of the movable plate are slidably arranged in sliding grooves in the front inner wall and the rear inner wall of the groove through sliding blocks correspondingly. The lifting mechanism is arranged in the movable plate, and a mounting plate is arranged on the lower side of the lifting mechanism; the fixing rods are symmetrically arranged on the front side and the rear side below the mounting plate in pairs, and the top ends of the fixing rods are connected with the mounting plate through adjusting mechanisms. The locking rings are arranged in annular grooves in the upper ends of the fixing rods in a one-to-one correspondence and screwed and sleeved mode through threads. The rotating rods are connected with the side plates on the two sides correspondingly, and one end of one rotating rod is connected with a rotating motor. The rotating discs are fixed to the ends, adjacent to the center of the workbench, of the rotating rods correspondingly, and clamping mechanisms are fixed to the sides, away from the rotating rods, of the rotating discs correspondingly. According to the finned tube grinding device, the spiral pieces of the finned tube can be ground in the finned tube rotating process, the grinding position can be adjusted according to the distance between the spiral pieces on the finned tube, and therefore the finned tube grinding effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fin tube processing, and in particular to a surface grinding device for processing fin tubes of a heat exchanger. Background Art

[0002] A finned heat exchanger is a heat exchange device that achieves the purpose of enhanced heat transfer by adding fins to an ordinary base tube. It is mainly used for air heating in a drying system and is the main equipment in a hot air device. It has the characteristics of high heat transfer efficiency, compactness, lightness, and strong adaptability, and is therefore widely used. Existing finned tubes require roller brush grinding of the fins during actual processing. The existing grinding method is to set a fixed roller brush mechanism and realize roller brushing of the finned tube by the rotation of the roller brush. When the finned tube is spiral, this method cannot guarantee the grinding effect, resulting in low precision of the fins. Summary of the invention

[0003] The purpose of the present invention is to provide a surface grinding device for processing finned tubes of heat exchangers with a reasonable design and easy use in view of the defects and shortcomings of the prior art. The device can grind the spiral pieces of the finned tubes during the rotation of the finned tubes, and the grinding position can be adjusted according to the distance between the spiral pieces on the finned tubes, thereby improving the grinding effect of the finned tubes.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: it comprises a workbench, supporting feet, a fixing frame and side panels, the four corners of the lower surface of the workbench are fixed with supporting feet, the upper side of the workbench is provided with a fixing frame, the fixing frame is arranged in an inverted "L" shape, the vertical plate of the fixing frame is fixed to the rear side of the upper surface of the workbench, the two sides of the upper surface of the workbench are fixed with side panels, and the side panels are fixedly connected to the fixing frame; it also comprises: The movable plate is arranged in a groove on the top wall of the fixed frame horizontal plate, and the front and rear sides of the movable plate are respectively slidably arranged in the slide grooves on the front and rear inner walls of the groove through sliders; A lifting mechanism, wherein the lifting mechanism is arranged in the movable plate, a mounting plate is arranged on the lower side of the lifting mechanism, and the mounting plate is suspended on the lower side of the horizontal plate of the fixed frame; There are four fixing rods, and two of them are symmetrically arranged on the front and rear sides below the mounting plate, and the top ends of the fixing rods are connected to the mounting plate through an adjustment mechanism; Locking rings, there are four locking rings, and they are correspondingly screwed into the annular groove at the upper end of the fixing rod through threaded connection; Rotating rods, there are two rotating rods, and they are respectively connected to the side plates on both sides, one end of one of the rotating rods is connected to a rotating motor, the rotating motor is connected to an external power source, and the rotating motor is fixed to the outer side wall of the side plate on one side; Rotating disks, there are two rotating disks, and they are respectively fixed on one end of the rotating rod adjacent to the center of the workbench, and a clamping mechanism is fixed on the side of the rotating disk away from the rotating rod; Through the above technical scheme, the fin tube is placed between the clamping mechanisms on both sides, and the two ends of the fin tube are clamped by the clamping mechanism. According to the distance between the spiral pieces on the fin tube, the distance between the fixing rods on the left and right sides is adjusted by the adjusting mechanism, and then the two sides of the sandpaper are clamped between the locking ring and the inner bottom wall of the annular groove of the fixing rod, and the locking ring is rotated, and the locking ring moves downward until the lower side of the locking ring contacts the upper side of the sandpaper, thereby limiting the sandpaper, and then the mounting plate is driven downward by the lifting mechanism, and the mounting plate drives the fixing rod to move downward, and the fixing rod drives the sandpaper to move downward and insert into the spiral piece of the fin tube, and the rotating motor is started. The rotating motor drives the rotating rod connected thereto to rotate, and the rotating rod drives the rotating disk to rotate, and the rotating disk drives the fin tube to rotate through the clamping mechanism. During the rotation of the fin tube, the fixing rod moves along the spiral piece of the fin tube, thereby grinding the fin tube through the sandpaper on the outside of the fixing rod.

[0005] As a further improvement of the present invention, the lifting mechanism comprises: A bidirectional screw rod, wherein the bidirectional screw rod is screwed and embedded in the movable plate through a bearing, and sliding blocks are screwed on both ends of the bidirectional screw rod through threads, and the sliding blocks are slidably arranged in a slide groove on the lower surface of the movable plate; Connecting rods, there are two connecting rods, and the upper ends of the connecting rods are respectively screwed to the bottom wall of the sliding block through hinge seats, and the lower ends of the connecting rods are connected to the upper surface of the mounting plate through hinge seats; A lifting motor, wherein the lifting motor is embedded and fixed in one side of the movable plate, the lifting motor is connected to an external power supply, a worm is fixed on the output shaft of the lifting motor, and the worm is arranged on the upper side of the bidirectional screw; A worm wheel, which is sleeved and fixed on the middle end of the bidirectional lead screw, and the worm wheel is meshed with the worm; Through the above technical solution, the lifting motor is started, the lifting motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the bidirectional lead screw to rotate, and during the rotation process, the bidirectional lead screw drives the sliding block to move through the threads at both ends of the lead screw, the two sliding blocks drive the upper end of the connecting rod to move, and the lower end of the connecting rod drives the mounting plate to move up and down until the mounting plate moves to a suitable height.

[0006] As a further improvement of the present invention, the adjustment mechanism comprises: There are two adjusting screw rods, which are symmetrically arranged in front and back and are screwed and embedded in the mounting plate through bearings. The two adjusting screw rods are connected through a synchronous wheel transmission assembly, and the threads at both ends of the adjusting screw rods are arranged oppositely. An adjusting motor, wherein the adjusting motor is fixed on a side wall of the mounting plate, and an output shaft of the adjusting motor is fixedly connected to one end of one of the adjusting screw rods; Adjustment blocks, there are four of them, and they are respectively arranged on both ends of the adjustment screw rod through threaded connection, and the adjustment blocks are slidably arranged in the slide groove on the lower surface of the mounting plate; Mounting blocks, there are four of them, and they are slidably arranged in the slide grooves on the lower surface of the mounting plate, the mounting blocks are arranged on one side of the adjustment block adjacent to the center of the mounting plate, and the upper end of the fixing rod is fixed on the lower side wall of the mounting block; Connecting springs, there are four connecting springs, which are respectively sleeved on both ends of the adjusting screw rod, and the two ends of the connecting springs are respectively embedded and fixed in the adjusting block and the mounting block; Through the above technical solution, the adjusting motor is started, and the adjusting motor drives the adjusting screw connected thereto to rotate, and the adjusting screw drives another adjusting screw to rotate through the synchronous wheel transmission assembly, and the two adjusting screws respectively drive the adjusting blocks to move through the threads, and the adjusting blocks drive the mounting blocks to move through the connecting springs, and the mounting blocks drive the fixing rods to move, so that the two left-right symmetrical fixing rods are moved to suitable positions, thereby facilitating the grinding of the sandpaper on the outside of the fixing rods and the spiral surface of the fin tube, thereby improving the grinding efficiency.

[0007] As a further improvement of the present invention, a movable plate is arranged on one side above the workbench, the rear side wall of the movable plate abuts against the front side wall of the vertical plate of the fixed frame, a rotating rod away from one side of the rotating motor is screwed to the movable plate through a bearing, and the rotating rod connected to the rotating motor is screwed to the side plate through a bearing, a guide bar is inserted into the rear side wall of the movable plate, the guide bar is fixed to the front side wall of the vertical plate of the fixed frame, a movable screw rod is embedded in the inside of the guide bar and screwed through the bearing, one end of the movable screw rod is connected to the movable motor, the movable motor is embedded in the side plate of one side, and the nut on the movable screw rod passes through the slide groove on the lower side wall of the guide bar and is fixedly connected to the inner wall of the movable plate; Through the above technical solution, the moving motor is started according to the length of the fin tube, and the moving motor drives the moving screw to rotate. During the rotation of the moving screw, the moving plate is driven to move through the nut thereon, and the moving plate drives the rotating rod and the turntable to move, thereby driving the clamping mechanism on one side to move until the distance between the clamping mechanisms on both sides reaches a suitable position.

[0008] As a further improvement of the present invention, a guide bucket is inserted into the rear side of the workbench, and the lower side of the guide bucket passes through the workbench and is suspended on the lower side of the workbench, and the upper side of the guide bucket is arranged in the same plane as the upper surface of the workbench; Through the above technical solution, the waste chips generated during the grinding process fall onto the workbench, and then the waste chips are blown to the rear side through the air gun, thereby facilitating the cleaning of the waste chips.

[0009] As a further improvement of the present invention, the clamping mechanism comprises: A clamping motor, wherein the clamping motor is embedded in and fixed in the rotating disk, and a gear disk is fixed on the output shaft of the clamping motor; Moving blocks, there are several moving blocks, and they are slidably arranged in the slide grooves on the side wall of the rotating disk at equal angles. The inside of each moving block is screwed with a clamping screw through a thread, and the clamping screw is screwed in the rotating disk through a bearing, and the tooth groove on the clamping screw is meshed with the toothed disk; Clamping blocks, there are several clamping blocks, and they are fixed on the outer wall of the moving block one by one, and the clamping blocks are suspended on the outer side of the rotating disk; Through the above technical solution, the clamping motor is started, the clamping motor drives the gear plate to rotate, the gear plate drives several clamping screws to rotate simultaneously, the clamping screws drive several moving blocks to move, and the moving blocks drive the clamping blocks to move until the clamping blocks contact the fin tubes, thereby achieving the clamping effect.

[0010] As a further improvement of the present invention, an annular slide rail is fixed on a side wall of the toothed disc away from the clamping screw rod, and the annular slide rail is slidably arranged in an annular slide groove on the inner wall of the rotating disc; The above technical solution can increase the stability of the gear wheel during rotation.

[0011] As a further improvement of the present invention, a reciprocating screw is embedded in the horizontal plate of the fixed frame, one end of the reciprocating screw is screwed to a side wall of the horizontal plate of the fixed frame through a bearing, a driving motor is fixed to the other end of the reciprocating screw, the driving motor is embedded and fixed to a side wall of the horizontal plate of the fixed frame, a moving frame is screwed to the reciprocating screw through a thread, an electric push rod is embedded and fixed in the horizontal plates on the front and rear sides of the moving frame, an insert plate is fixed to the piston rod of the electric push rod, and the insert plate is inserted in cooperation with the square groove on the top wall of the movable plate; Through the above technical scheme, when it is necessary to grind the fin tube with strip pieces set at equal angles, the sandpaper is fixed on two symmetrical fixed rods in the front-to-back direction, and then the fixed rod is inserted between two adjacent strip pieces on the fin tube. The electric push rod is started, and the electric push rod drives the plug plate to move downward. The plug plate is inserted into the square groove on the top wall of the movable plate. Then the drive motor is started, and the drive motor drives the moving frame to move. The moving frame drives the movable plate to move back and forth through the electric push rod and the plug plate, thereby achieving the grinding effect.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The fin tube is arranged on the side plate through a clamping mechanism, a rotating rod and a rotating motor. The fin tube can be driven to rotate by the rotating motor, so that the spiral sheet of the fin tube is polished during the rotation of the fin tube, thereby improving the polishing effect; 2. The position of the fixing rod is adjusted through the adjustment mechanism according to the distance between the spiral pieces on the fin tube, so that the sandpaper on the fixing rod contacts the spiral pieces on the fin tube, thereby improving the grinding effect of the fin tube; 3. The mounting plate on the fixed rod can be connected to the movable plate through a lifting mechanism, so that the height of the fixed rod can be adjusted according to the diameter of the fin tube to meet the use of fin tubes of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention.

[0014] Figure 2 It is an exploded view of the present invention.

[0015] Figure 3 This is an exploded view of the lifting mechanism, mounting plate, movable plate and reciprocating screw in the present invention.

[0016] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0017] Figure 5 It is an exploded view of the adjustment mechanism and the mounting plate in the present invention.

[0018] Figure 6 for Figure 5 Enlarged view of part B in the middle.

[0019] Figure 7 It is an exploded view of the rotating disk, rotating rod and clamping mechanism in the present invention.

[0020] Figure 8 It is an exploded view of the moving plate, the moving motor, the guide bar and the moving lead screw in the present invention.

[0021] Description of reference numerals: Workbench 1, supporting foot 2, fixed frame 3, side plate 4, movable plate 5, lifting mechanism 6, bidirectional screw 6-1, sliding block 6-2, connecting rod 6-3, lifting motor 6-4, worm 6-5, worm wheel 6-6, mounting plate 7, fixed rod 8, adjusting mechanism 9, adjusting screw 9-1, adjusting motor 9-2, adjusting block 9-3, mounting block 9-4, connecting spring 9-5, locking ring 10, rotating rod 11, rotating motor 12, rotating disk 13, clamping mechanism 14, clamping motor 14-1, toothed disk 14-2, moving block 14-3, clamping screw 14-4, clamping block 14-5, moving plate 15, moving motor 16, guide bar 17, moving screw 18, guide bucket 19, annular slide rail 20, reciprocating screw 21, drive motor 22, moving frame 23, electric push rod 24, plug plate 25. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. The preferred embodiments in the description are only used as examples, and all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention. Example

[0023] like Figure 1-Figure 8 As shown, this embodiment includes a workbench 1, a supporting leg 2, a fixing frame 3 and a side plate 4. The four corners of the lower surface of the workbench 1 are welded and fixed with supporting legs 2. The upper side of the workbench 1 is provided with a fixing frame 3, which is arranged in an inverted "L" shape. The vertical plate of the fixing frame 3 is welded and fixed to the rear side of the upper surface of the workbench 1. The side plates 4 are welded and fixed to both sides of the upper surface of the workbench 1. The side plates 4 are welded and fixed to the fixing frame 3; a guide bucket 19 is inserted into the rear side of the workbench 1. After the lower side of the guide bucket 19 passes through the workbench 1, it is suspended on the lower side of the workbench 1. The upper side of the guide bucket 19 is arranged in the same plane as the upper surface of the workbench 1. The waste chips generated during the grinding process fall on the workbench 1, and then the waste chips are blown to the rear side by an air gun, so as to facilitate the cleaning of the waste chips; it also includes: The movable plate 5 is arranged in a groove on the top wall of the horizontal plate of the fixed frame 3, and the front and rear sides of the movable plate 5 are respectively slidably arranged in the slide grooves on the front and rear inner walls of the groove through sliders; A lifting mechanism 6, wherein the lifting mechanism 6 is disposed in the movable plate 5, and a mounting plate 7 is disposed on the lower side of the lifting mechanism 6, and the mounting plate 7 is suspended on the lower side of the horizontal plate of the fixing frame 3; The fixing rods 8 are four in number and are symmetrically arranged in pairs at the front and rear sides below the mounting plate 7. The top ends of the fixing rods 8 are connected to the mounting plate 7 via an adjustment mechanism 9. The locking ring 10 is four in number and is threadedly sleeved in the annular groove at the upper end of the fixing rod 8 in a one-to-one correspondence; Rotating rods 11, there are two rotating rods 11, and they are respectively connected to the side panels 4 on both sides, the left end of the rotating rod 11 on the left side is connected to a rotating motor 12, the rotating motor 12 is connected to an external power supply, and the rotating motor 12 is fixed to the outer wall of the side panel 4 on the left side by bolts; There are two rotating disks 13 , and they are respectively welded and fixed on one end of the rotating rod 11 adjacent to the center of the workbench 1 , and a clamping mechanism 14 is fixed on one side of the rotating disk 13 away from the rotating rod 11 . Example

[0024] See also Figure 2-4 As shown, based on Example 1, the lifting mechanism 6 includes: A bidirectional screw rod 6-1, wherein the bidirectional screw rod 6-1 is screwed and embedded in the movable plate 5 through a bearing, and a sliding block 6-2 is screwed on both ends of the bidirectional screw rod 6-1 through a thread, and the sliding block 6-2 is slidably arranged in a slide groove on the lower surface of the movable plate 5; Connecting rods 6-3, there are two connecting rods 6-3, and the upper ends of the connecting rods 6-3 are respectively screwed to the bottom wall of the sliding block 6-2 through hinge seats, and the lower ends of the connecting rods 6-3 are connected to the upper surface of the mounting plate 7 through hinge seats; A lifting motor 6-4, wherein the lifting motor 6-4 is embedded in the left side of the movable plate 5 and fixed by bolts, the lifting motor 6-4 is connected to an external power supply, a worm 6-5 is fixed on the output shaft of the lifting motor 6-4, and the worm 6-5 is arranged on the upper side of the bidirectional screw 6-1; The worm wheel 6-6 is sleeved and welded on the middle end of the bidirectional lead screw 6-1, and the worm wheel 6-6 is meshed with the worm 6-5. Example

[0025] See also Figure 5-6 As shown, based on Example 1, the adjustment mechanism 9 includes: There are two adjusting screw rods 9-1, and they are symmetrically screwed and embedded in the mounting plate 7 through bearings. The two adjusting screw rods 9-1 are connected through a synchronous wheel transmission assembly, and the threads at both ends of the adjusting screw rods 9-1 are oppositely arranged; An adjusting motor 9-2, wherein the adjusting motor 9-2 is fixed to the right side wall of the mounting plate 7 by bolts, and the output shaft of the adjusting motor 9-2 is fixedly connected to the right end of the front adjusting screw rod 9-1; Adjustment blocks 9-3, there are four adjustment blocks 9-3, and they are respectively arranged on both ends of the adjustment screw rod 9-1 through threaded connection, and the adjustment blocks 9-3 are slidably arranged in the slide groove on the lower surface of the mounting plate 7; Mounting blocks 9-4, there are four mounting blocks 9-4, and they are slidably arranged in the slide grooves on the lower surface of the mounting plate 7, the mounting blocks 9-4 are arranged on one side of the adjusting block 9-3 adjacent to the center of the mounting plate 7, and the upper end of the fixing rod 8 is fixed to the lower side wall of the mounting block 9-4 by bolts; Connecting spring 9-5, there are four connecting springs 9-5, and they are respectively sleeved on the two ends of the adjusting screw rod 9-1, and the two ends of the connecting spring 9-5 are respectively embedded and welded and fixed in the adjusting block 9-3 and the mounting block 9-4. Example

[0026] See also Figure 1-2 , Figure 8As shown, on the basis of Example 1, a movable plate 15 is arranged on the right side above the workbench 1, and the rear side wall of the movable plate 15 abuts against the front side wall of the vertical plate of the fixed frame 3. The rotating rod 11 on the right is screwed to the movable plate 15 through a bearing, and the rotating rod 11 on the left is screwed to the side plate 4 through a bearing. A guide bar 17 is inserted into the rear side wall of the movable plate 15, and the guide bar 17 is welded and fixed to the front side wall of the vertical plate of the fixed frame 3. A movable screw rod 18 is embedded in the guide bar 17 and screwed through a bearing. The right end of the movable screw rod 18 is connected to the movable motor 16, and the movable motor 16 is embedded in the side plate 4 on the right. After the nut on the movable screw rod 18 passes through the slide groove on the lower side wall of the guide bar 17, it is welded and fixed to the inner wall of the movable plate 15. Example

[0027] See also Figure 1-2 , Figure 7 As shown, based on Example 1, the clamping mechanism 14 includes: A clamping motor 14-1, wherein the clamping motor 14-1 is embedded in the rotating disk 13 and fixed by bolts, and a toothed disk 14-2 is fixed on the output shaft of the clamping motor 14-1; The moving blocks 14-3 are several in number and are slidably arranged in the slide groove on the side wall of the rotating disk 13 at equal angles. The interior of the moving blocks 14-3 is screwed with a clamping screw 14-4 through a thread. The clamping screw 14-4 is screwed in the rotating disk 13 through a bearing. The tooth groove on the clamping screw 14-4 is meshed with the toothed disk 14-2. An annular slide rail 20 is welded and fixed on a side wall of the toothed disk 14-2 away from the clamping screw 14-4. The annular slide rail 20 is slidably arranged in the annular slide groove on the inner wall of the rotating disk 13, which can increase the stability of the toothed disk 14-2 when it rotates. The clamping blocks 14 - 5 are in multiple numbers and are welded and fixed one by one on the outer wall of the moving block 14 - 3 . The clamping blocks 14 - 5 are suspended on the outer side of the rotating disk 13 . Example

[0028] See also Figure 2 , Figure 3 As shown, on the basis of Example 1, a reciprocating screw 21 is embedded in the horizontal plate of the fixed frame 3, and the right end of the reciprocating screw 21 is screwed to the right side wall of the horizontal plate of the fixed frame 3 through a bearing, and a driving motor 22 is fixed to the left end of the reciprocating screw 21, and the driving motor 22 is embedded and fixed in the left side wall of the horizontal plate of the fixed frame 3, and a moving frame 23 is screwed to the reciprocating screw 21 through a thread, and an electric push rod 24 is embedded in the horizontal plates on the front and rear sides of the moving frame 23 and fixed by bolts, and an insert plate 25 is fixed to the piston rod of the electric push rod 24 by bolts, and the insert plate 25 is inserted in cooperation with the square groove on the top wall of the movable plate 5.

[0029] When using the present invention, according to the length of the fin tube, the moving motor 16 is started, and the moving motor 16 drives the moving screw 18 to rotate. During the rotation of the moving screw 18, the moving plate 15 is driven to move through the nut thereon, and the moving plate 15 drives the rotating rod 11 and the turntable to move, thereby driving the clamping mechanism 14 on one side to move, until the distance between the clamping mechanisms 14 on both sides reaches a suitable position, and the fin tube is placed between the clamping mechanisms 14 on both sides, and the clamping motor 14-1 is started, and the clamping motor 14-1 drives the toothed disc 14-2 to rotate, and the toothed disc 14-2 drives several clamping screws 14-4 to rotate at the same time, and the clamping screw 14-4 drives several moving blocks 14-3 to move, and the moving block 14-3 drives the clamping block 14-5 to move, until the clamping block 14-5 contacts the fin tube, thereby achieving the clamping effect; According to the distance between the spiral sheets on the fin tube, the adjusting motor 9-2 is started, and the adjusting motor 9-2 drives the connected adjusting screw 9-1 to rotate, and the adjusting screw 9-1 drives another adjusting screw 9-1 to rotate through the synchronous wheel transmission assembly, and the two adjusting screws 9-1 respectively drive the adjusting block 9-3 to move through the thread, and the adjusting block 9-3 drives the mounting block 9-4 to move through the connecting spring 9-5, and the mounting block 9-4 drives the fixing rod 8 to move, so that the two left-right symmetrical fixing rods 8 are moved to the appropriate position, and then the two sides of the sandpaper are clamped between the locking ring 10 and the inner bottom wall of the annular groove of the fixing rod 8, and the locking ring 10 is rotated, and the locking ring 10 moves downward until the lower side of the locking ring 10 contacts the upper side of the sandpaper, thereby limiting the sandpaper, and starting the lifting motor 6-4, and the lifting motor 6-4 drives the worm The rod 6-5 rotates, the worm 6-5 drives the worm wheel 6-6 to rotate, the worm wheel 6-6 drives the bidirectional lead screw 6-1 to rotate, and the bidirectional lead screw 6-1 drives the sliding block 6-2 to move through the threads at both ends during the rotation, and the two sliding blocks 6-2 drive the upper end of the connecting rod 6-3 to move, and the lower end of the connecting rod 6-3 drives the mounting plate 7 to move up and down, and the mounting plate 7 drives the fixing rod 8 to move downward, and the fixing rod 8 drives the sandpaper to move downward and insert into the spiral sheet of the fin tube, and the rotating motor 12 is started, and the rotating motor 12 drives the rotating rod 11 connected thereto to rotate, and the rotating rod 11 drives the rotating disk 13 to rotate, and the rotating disk 13 drives the fin tube to rotate through the clamping mechanism 14, and the fin tube rotates during the rotation of the fin tube, so that the fixing rod 8 moves along the spiral sheet of the fin tube, so that the fin tube is polished by the sandpaper on the outside of the fixing rod 8; When it is necessary to grind the fin tube with strip pieces set at equal angles, the sandpaper is fixed on the two symmetrical fixing rods 8 in the front-to-back direction, and then the fixing rod 8 is inserted between the two adjacent strip pieces on the fin tube, and the electric push rod 24 is started, and the electric push rod 24 drives the plug plate 25 to move downward, and the plug plate 25 is inserted into the square groove on the top wall of the movable plate 5, and then the driving motor 22 is started, and the driving motor 22 drives the moving frame 23 to move, and the moving frame 23 drives the movable plate 5 to reciprocate through the electric push rod 24 and the plug plate 25, so as to achieve the grinding effect.

[0030] Compared with the prior art, the beneficial effects of this specific implementation are as follows: 1. The fin tube is arranged on the side plate 4 through the clamping mechanism 14, the rotating rod 11 and the rotating motor 12. The fin tube can be driven to rotate by the rotating motor 12, so that the spiral sheet of the fin tube is polished during the rotation of the fin tube, thereby improving the polishing effect; 2. The position of the fixing rod 8 is adjusted by the adjusting mechanism 9 according to the distance between the spiral pieces on the fin tube, so that the sandpaper on the fixing rod 8 contacts the spiral pieces on the fin tube, thereby improving the grinding effect of the fin tube; 3. The mounting plate 7 on the fixing rod 8 can be connected to the movable plate 5 through the lifting mechanism 6, so that the height of the fixing rod 8 can be adjusted according to the diameter of the fin tube to meet the use of fin tubes of different specifications.

[0031] For those skilled in the art, they can modify the technical solutions described in the aforementioned embodiments and make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A surface grinding device for processing heat exchanger fin tubes, comprising a workbench (1), supporting legs (2), a fixing frame (3) and side panels (4), wherein the four corners of the lower surface of the workbench (1) are fixed with supporting legs (2), the upper side of the workbench (1) is provided with a fixing frame (3), the fixing frame (3) is provided in an inverted "L" shape, the vertical plate of the fixing frame (3) is fixed to the rear side of the upper surface of the workbench (1), the side panels (4) are fixed to both sides of the upper surface of the workbench (1), and the side panels (4) are fixedly connected to the fixing frame (3); characterized in that: It also contains: A movable plate (5), the movable plate (5) being arranged in a groove on the top wall of the inner side of the horizontal plate of the fixed frame (3), and the front and rear sides of the movable plate (5) being slidably arranged in sliding grooves on the front and rear inner walls of the groove through sliders respectively; A lifting mechanism (6), wherein the lifting mechanism (6) is arranged in the movable plate (5), a mounting plate (7) is arranged on the lower side of the lifting mechanism (6), and the mounting plate (7) is suspended on the lower side of the horizontal plate of the fixed frame (3); Fixed rods (8), wherein there are four fixed rods (8), and two of the fixed rods are symmetrically arranged at the front and rear sides below the mounting plate (7), and the top ends of the fixed rods (8) are connected to the mounting plate (7) via an adjustment mechanism (9); Locking rings (10), wherein there are four locking rings (10), and each of the locking rings (10) is correspondingly sleeved in the annular groove at the upper end of the fixing rod (8) through a threaded connection; Rotating rods (11), wherein there are two rotating rods (11), and the rotating rods (11) are respectively connected to the side plates (4) on both sides, one end of one rotating rod (11) is connected to a rotating motor (12), the rotating motor (12) is connected to an external power source, and the rotating motor (12) is fixed to the outer side wall of the side plate (4) on one side; There are two rotating disks (13), and they are respectively fixed on one end of the rotating rod (11) adjacent to the center of the workbench (1), and a clamping mechanism (14) is fixed on the side of the rotating disk (13) away from the rotating rod (11).

2. A surface grinding device for processing heat exchanger fin tubes according to claim 1, characterized in that: The lifting mechanism (6) comprises: A bidirectional screw rod (6-1), the bidirectional screw rod (6-1) being screwed and embedded in the movable plate (5) via a bearing, and sliding blocks (6-2) being screwed and threaded at both ends of the bidirectional screw rod (6-1), and the sliding blocks (6-2) being slidably arranged in a slide groove on the lower surface of the movable plate (5); Connecting rods (6-3), there are two connecting rods (6-3), and the upper ends of the connecting rods (6-3) are respectively screwed to the bottom wall of the sliding block (6-2) through hinged seats, and the lower ends of the connecting rods (6-3) are connected to the upper surface of the mounting plate (7) through the hinged seats; A lifting motor (6-4), wherein the lifting motor (6-4) is embedded in and fixed in one side of the movable plate (5), the lifting motor (6-4) is connected to an external power supply, a worm (6-5) is fixed on the output shaft of the lifting motor (6-4), and the worm (6-5) is arranged on the upper side of the bidirectional screw (6-1); A worm wheel (6-6) is sleeved and fixed on the middle end of the bidirectional lead screw (6-1), and the worm wheel (6-6) is meshed with the worm (6-5).

3. The surface grinding device for processing heat exchanger fin tubes according to claim 1, characterized in that: The regulating mechanism (9) comprises: There are two adjusting screw rods (9-1), which are symmetrically arranged in front and back and are screw-connected and embedded in the mounting plate (7) through bearings. The two adjusting screw rods (9-1) are connected through a synchronous wheel transmission assembly, and the threads at both ends of the adjusting screw rods (9-1) are arranged oppositely. An adjusting motor (9-2), wherein the adjusting motor (9-2) is fixed on a side wall of the mounting plate (7), and an output shaft of the adjusting motor (9-2) is fixedly connected to one end of one of the adjusting screw rods (9-1); Adjustment blocks (9-3), there are four adjustment blocks (9-3), which are respectively arranged on both ends of the adjustment screw rod (9-1) through threaded connection, and the adjustment blocks (9-3) are slidably arranged in a slide groove on the lower surface of the mounting plate (7); Mounting blocks (9-4), the number of the mounting blocks (9-4) being four and the mounting blocks (9-4) being slidably disposed in the slide grooves on the lower surface of the mounting plate (7), the mounting blocks (9-4) being disposed on one side of the adjusting block (9-3) adjacent to the center of the mounting plate (7), and the upper end of the fixing rod (8) being fixed on the lower side wall of the mounting block (9-4); Connecting springs (9-5), there are four connecting springs (9-5), which are respectively sleeved on the two ends of the adjusting screw rod (9-1), and the two ends of the connecting springs (9-5) are respectively embedded and fixed in the adjusting block (9-3) and the mounting block (9-4).

4. The surface grinding device for processing heat exchanger fin tubes according to claim 1, characterized in that: A movable plate (15) is arranged on one side above the workbench (1), the rear side wall of the movable plate (15) abuts against the front side wall of the vertical plate of the fixed frame (3), the rotating rod (11) away from the side of the rotating motor (12) is screwed to the movable plate (15) through a bearing, the rotating rod (11) connected to the rotating motor (12) is screwed to the side plate (4) through a bearing, a guide bar (17) is inserted into the rear side wall of the movable plate (15), the guide bar (17) is fixed to the front side wall of the vertical plate of the fixed frame (3), a movable screw rod (18) is embedded in the guide bar (17) and screwed through a bearing, one end of the movable screw rod (18) is connected to the movable motor (16), the movable motor (16) is embedded in the side plate (4) on one side, and the nut on the movable screw rod (18) passes through the slide groove on the lower side wall of the guide bar (17) and is fixedly connected to the inner wall of the movable plate (15).

5. The surface grinding device for processing heat exchanger fin tubes according to claim 1, characterized in that: A guide bucket (19) is inserted into the rear side of the workbench (1). The lower side of the guide bucket (19) passes through the workbench (1) and is suspended on the lower side of the workbench (1). The upper side of the guide bucket (19) is arranged in the same plane as the upper surface of the workbench (1).

6. The surface grinding device for processing heat exchanger fin tubes according to claim 1, characterized in that: The clamping mechanism (14) comprises: A clamping motor (14-1), wherein the clamping motor (14-1) is embedded in and fixed in the rotating disk (13), and a toothed disk (14-2) is fixed on the output shaft of the clamping motor (14-1); A plurality of moving blocks (14-3) are provided in a sliding groove on a side wall of a rotating disk (13) at equal angles, a clamping screw (14-4) is screwed to the inside of each moving block (14-3) via a thread, the clamping screw (14-4) is screwed to the rotating disk (13) via a bearing, and a tooth groove on the clamping screw (14-4) is meshed with a tooth disk (14-2); A clamping block (14-5), wherein there are a plurality of clamping blocks (14-5), which are fixed one by one on the outer wall of the moving block (14-3), and the clamping blocks (14-5) are suspended on the outer side of the rotating disk (13).

7. A surface grinding device for processing heat exchanger fin tubes according to claim 6, characterized in that: An annular slide rail (20) is fixed on a side wall of the toothed disc (14-2) away from the clamping screw rod (14-4), and the annular slide rail (20) is slidably arranged in an annular slide groove on the inner wall of the rotating disc (13).

8. The surface grinding device for processing heat exchanger fin tubes according to claim 1, characterized in that: A reciprocating screw rod (21) is embedded in the horizontal plate of the fixed frame (3), one end of the reciprocating screw rod (21) is screwed to a side wall of the horizontal plate of the fixed frame (3) through a bearing, a driving motor (22) is fixed to the other end of the reciprocating screw rod (21), the driving motor (22) is embedded and fixed to a side wall of the horizontal plate of the fixed frame (3), a moving frame (23) is screwed to the reciprocating screw rod (21) through a thread, an electric push rod (24) is embedded and fixed in the horizontal plates at the front and rear sides of the moving frame (23), an insert plate (25) is fixed to the piston rod of the electric push rod (24), and the insert plate (25) is inserted in cooperation with a square groove on the top wall of the movable plate (5).

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