A condenser copper tube inner wall grinding and scraping device and method

Abstract

The present invention discloses an inner wall grinding and scraping device and method for manufacturing condenser copper tubes, comprising a water receiving trough, a vertical pole fixedly connected to the center of the water receiving trough, two rotating mechanisms installed on the vertical pole, and a fixed disk fixedly connected to the top of the vertical pole; a through hole is provided on the fixed disk, and a reeling mechanism arranged on the outer periphery of the fixed disk and capable of being raised and lowered is installed on one of the rotating mechanisms; a steel wire reinforced hose is wound in the reeling mechanism, and the water outlet end of the steel wire reinforced hose is connected to an inner wall grinding and scraping assembly, and a twisted steel wire assembly located below the fixed disk is installed on the other rotating mechanism. The present invention relates to the technical field of condenser copper tube manufacturing. The present invention solves the problem that in the process of manufacturing condenser tubes, oxide scale and oil stains on the inner wall of the tube are difficult to scrape due to the lack of effective technical means, thereby affecting the heat transfer performance of the condenser tube and the operating performance, energy consumption, equipment life and reliability of the refrigeration and heating systems.

Description

Technical Field

[0001] The invention relates to the technical field of condensing copper tube manufacturing, and in particular to an inner wall grinding and scraping device and method for manufacturing a condensing copper tube. Background Art

[0002] Condensers are key components in cooling and heating systems, and their performance directly impacts overall system efficiency. Condensers typically undergo several key steps in their production, including casting, rolling, and stretching. After stretching, existing processes typically focus on removing scale and oil from the tube's exterior. Through a series of operations, including grinding, scraping, cleaning, and drying, these processes ensure the tube's exterior is clean, preparing it for subsequent winding and cutting processes.

[0003] However, grinding and scraping the inner walls of tubes has long been a thorny issue facing the industry. Many manufacturers, lacking effective technology for this task or driven by cost considerations, often simply choose to neglect grinding and scraping the inner walls. However, the residual oxide scale and oil stains on the inner walls of tubes can have a profoundly negative impact on the heat transfer performance of condenser tubes. The presence of oxide scale forms an insulating layer on the inner walls of the tubes, hindering the smooth transfer of heat; oil stains adhere to the tube walls, reducing their thermal conductivity and further weakening heat transfer efficiency. This reduction in heat transfer efficiency, in turn, significantly reduces the condensing effect, impacting the performance of the entire cooling or heating system, increasing energy consumption, and reducing the lifespan and reliability of the equipment.

[0004] Against the backdrop of increasing demands for energy efficiency and equipment performance, the development of equipment and methods that can effectively grind and scrape away scale and oil stains from the inner walls of condenser tubes is urgent. This invention addresses this challenge, aiming to improve condenser performance and meet the needs of industry development. Summary of the Invention

[0005] In order to solve the problem that during the production process of condenser tubes, the oxide scale and oil stains on the inner wall of the tube are difficult to scrape off due to the lack of effective technical means, which in turn affects the heat transfer performance of the condenser tubes and the operating performance, energy consumption, equipment life and reliability of the refrigeration and heating systems, the purpose of the present invention is to provide an inner wall grinding and scraping device and method for the production of condenser copper tubes.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solution: a device for grinding and scraping the inner wall of a condensing copper tube, comprising a water receiving trough, a vertical pole fixedly connected to the center of the water receiving trough, two rotating mechanisms installed on the vertical pole, and a fixed disk fixedly connected to the top of the vertical pole; a through hole is provided on the fixed disk, one of the rotating mechanisms is installed with a reeling mechanism arranged on the outer periphery of the fixed disk and capable of being raised and lowered; a steel wire reinforced hose is reeled in the reeling mechanism, and the water outlet end of the steel wire reinforced hose is connected to the inner wall grinding and scraping assembly, and the other rotating mechanism is installed with a twisted steel wire assembly located below the fixed disk;

[0007] The inner wall grinding and scraping assembly includes a first pipe assembly fixedly connected to the water outlet end of the steel wire reinforced hose, a first conical nozzle rotatably installed at the end of the first pipe assembly, a second pipe assembly fixedly installed at the end of the first conical nozzle away from the first pipe assembly, and a second conical nozzle fixedly connected to the end of the second pipe assembly. A plurality of guide wheels are installed on the outer periphery of the first pipe assembly for guiding and tightening to the inner wall of the condensing copper tube; a plurality of grinding scrapers and a plurality of bristles are installed on the second pipe assembly;

[0008] The twisted steel wire assembly includes a second winding wheel in which high carbon steel wire is wound; the high carbon steel wire is detachably connected to the inner wall grinding and scraping assembly and is used to pull and rotate the inner wall grinding and scraping assembly.

[0009] Preferably, an installation space is provided on the outer wall of the vertical pole, and the rotating mechanism includes a first motor fixedly installed in the installation space, the output end shaft of the first motor is connected to a first gear, the first gear is engaged with an inner gear ring movably sleeved on the outer periphery of the vertical pole, and the top port of the inner gear ring is fixedly connected to a ring rotatably sleeved on the outer wall of the vertical pole.

[0010] Preferably, the winding mechanism includes a first support beam fixedly connected to the outer wall of the ring, a hydraulic cylinder is fixedly installed on the first support beam, the telescopic end on the top of the hydraulic cylinder is fixedly connected to the U-shaped plate, the side wall of the U-shaped plate is rotatably connected to a short tube with an open end, and the other end of the short tube is closed; the outer wall of the short tube located inside the U-shaped plate is fixedly sleeved with a first winding wheel, and the side wall of the U-shaped plate is fixedly installed with a second motor, the output end of the second motor is axially connected to the closed end of the short tube, and the outer wall of the open end of the short tube is rotatably sleeved with an interface for connecting to a water inlet pipe; the interface is fixedly connected to the side wall of the U-shaped plate; the steel wire reinforced hose is wound by the first winding wheel, and a port of the steel wire reinforced hose away from the inner wall grinding and scraping assembly is connected to the outer wall of the short tube.

[0011] Preferably, the first pipe assembly includes a first connecting pipe with a threaded outer wall, one port of the first connecting pipe is fixedly docked with the water outlet end of the steel wire reinforced hose, and the end of the first connecting pipe away from the steel wire reinforced hose is fixedly docked with the first metal bellows; the end of the first metal bellows away from the first connecting pipe is rotatably docked with the water inlet end of the first conical nozzle; the second pipe assembly includes a second connecting pipe, one end of the second connecting pipe is fixedly docked with the second metal bellows; the first conical nozzle is provided with a water outlet end, and its water outlet end is fixedly docked with one port of the second connecting pipe; the water inlet end of the second conical nozzle is fixedly docked with the port of the second metal bellows, and the end face of the second conical nozzle is fixedly connected with a spring buckle.

[0012] Preferably, the outer wall of the first connecting tube is fixedly sleeved with a first fixed ring, and the outer wall of the first connecting tube is slidably sleeved with a first movable ring; the outer wall of the first fixed ring is provided with a plurality of first mounting grooves arranged in a circular array, and the first support plates are hinged in the plurality of first mounting grooves; the outer wall of the first movable ring is provided with a plurality of second mounting grooves arranged in a circular array, and the second support plates are hinged in the plurality of second mounting grooves; the first support plate and the second support plate are arranged in an eight-shaped arrangement, and their ends are hingedly connected to a rectangular frame; the guide wheel is rotatably installed on the inner wall of the rectangular frame through a pin shaft, and a threaded ring is rotatably docked at the port of the first movable ring, and the threaded ring is threadedly sleeved on the threaded outer wall of the first connecting tube.

[0013] Preferably, the outer wall of the second connecting tube is fixedly sleeved with a second fixed ring, and the outer wall of the second connecting tube is slidably sleeved with a second movable ring; the outer wall of the second fixed ring is provided with a plurality of third mounting grooves arranged in a circular array, and a third support plate is hinged in the plurality of third mounting grooves; the outer wall of the second movable ring is provided with a plurality of fourth mounting grooves arranged in a circular array, and a fourth support plate is hinged in the plurality of fourth mounting grooves; the third support plate and the fourth support plate are arranged in an eight-shaped arrangement, and their ends are hingedly connected to a strip plate; a plurality of grinding scrapers and a plurality of bristles are fixedly arranged at intervals on a plurality of strip plates, an adjusting disk is threadedly sleeved on the threaded outer wall of the second connecting tube, and a strong spring is sleeved on the outer wall of the second connecting tube; the two ends of the strong spring are respectively pressed against the end faces of the second movable ring and the adjusting disk.

[0014] Preferably, the stranded wire assembly includes a second support beam fixedly connected to the outer wall of the ring, a third motor and a support block are fixedly mounted on the second support beam, the output end of the third motor is axially connected to a U-shaped frame, the side walls of the U-shaped frame are fixedly mounted with a fourth motor and a fifth motor, the second winding wheel is arranged inside the U-shaped frame, the output end of the fourth motor is axially connected to the second winding wheel, the inner side wall of the U-shaped frame is fixedly mounted with a Z-shaped bending tube, the bending angles of the two bending places of the Z-shaped bending tube are set to be greater than 100 degrees, and the bending places are arc-shaped transitions; the inner side wall of the U-shaped frame is rotatably connected with two connecting shafts symmetrically arranged up and down, one end of the connecting shaft is axially connected to the output end of the fifth motor, and the two The outer wall of the connecting shaft is fixedly sleeved with two groove wheels and two second gears, the inner walls of the two groove wheels are fixedly sleeved with rubber rings, the two second gears are meshed with each other, and the end of the U-shaped frame away from the third motor is fixedly penetrated by a column, and the column rotates through the side wall of the support block, and the Z-shaped bent tube is located between the two groove wheels and the second winding wheel. The high-carbon steel wire slides through the inner wall of the Z-shaped bent tube, and the two rubber rings in the two groove wheels are pressed tightly on the outer wall of the high-carbon steel wire. The high-carbon steel wire slides through the axis of the column, and a hanging ring is fixedly provided on the end of the high-carbon steel wire away from the second winding wheel, and a spring buckle is hung on the hanging ring. The side of the support block close to the hanging ring is fixedly connected to a water shield, and the column rotates through the water shield.

[0015] A method for grinding and scraping the inner wall of a condenser copper tube, further comprising a hot air blower, and comprising the following specific steps:

[0016] S1, place the coiled copper tube on a fixed plate, bend the two ends of the copper tube into a horizontal shape, and pass the lower end through the through hole;

[0017] S2, the rotating mechanism drives the stranded wire assembly to rotate around the vertical pole, aligning the end of the high-carbon steel wire with the lower end of the copper tube. The rotating mechanism drives the winding mechanism to rotate around the fixed disk, and at the same time adjusts the height of the winding mechanism to align the upper end of the copper tube toward the winding mechanism.

[0018] S3, inserting the end of the high carbon steel wire into the lower end of the copper tube, and the wire twisting assembly feeds the high carbon steel wire into the copper tube and out from the upper end of the copper tube;

[0019] S4, the end of the high-carbon steel wire is connected to the inner wall grinding and scraping assembly. The wire twisting assembly rotates itself to twist the high-carbon steel wire and reel it in at the same time. The staff manually assists the inner wall grinding and scraping assembly to enter from the upper end of the copper tube.

[0020] S5, the high-carbon steel wire rotates while being pulled, driving the second cone nozzle, the second tube assembly, and the first cone nozzle to rotate, and the grinding scraper and the bristles rotate synchronously to grind, scrape, and sweep the oxide scale and dirt on the inner wall of the copper tube; at the same time, the first cone nozzle and the second cone nozzle brush the inner wall of the copper tube;

[0021] At the same time, a plurality of guide wheels are supported on the inner wall of the copper tube, and the guide wheels roll on the inner wall of the copper tube to prevent the first tube assembly from rotating. Then, the first cone nozzle rotates at the end of the first tube assembly, thereby preventing the steel wire reinforced hose from rotating.

[0022] S6, wastewater is discharged from the lower port of the copper pipe and flows into the water receiving tank;

[0023] S7, after the high carbon steel wire pulls the inner wall grinding and scraping assembly out of the lower end of the copper tube, the high carbon steel wire and the inner wall grinding and scraping assembly are disassembled;

[0024] S8, the reeling mechanism reels the steel wire reinforced hose and pulls it out of the copper tube;

[0025] S9, connect the air outlet of the hot air blower to the upper end of the copper pipe, and the hot air is discharged from the lower end of the copper pipe to dry the inner wall of the pipe.

[0026] Compared with the prior art, the present invention achieves the following beneficial effects:

[0027] 1. The present invention makes use of the flexible threading characteristics and good toughness of high-carbon steel wire. By feeding the high-carbon steel wire and then pulling out the inner wall grinding and scraping component through the high-carbon steel wire, grinding and scraping can be performed in the copper tube after winding, solving the inner wall grinding and scraping problem that has been difficult to overcome in the industry for a long time.

[0028] 2. The present invention utilizes a grinding scraper to forcefully scrape off the stubborn oxide scale on the inner wall of the condenser tube, while the bristles can carefully sweep away the residual oil stains. Combined with the high-pressure water spraying of the first cone nozzle and the second cone nozzle, efficient and comprehensive grinding and scraping of the oxide scale and oil stains on the inner wall of the tube can be achieved.

[0029] 3. The present invention rotates the Z-shaped bent tube in the stranded steel wire assembly following the U-shaped frame, thereby shaking the high-carbon steel wire to rotate it. At the same time, the groove wheel rotates in coordination, and the high-carbon steel wire is pulled by clamping the rubber ring, so that the inner wall grinding and scraping assembly moves in the copper tube.

[0030] 4. The present invention adopts a steel wire reinforced hose. Due to its special steel wire reinforced material and the guide wheel that is tightly supported on the inner wall of the copper tube, it effectively avoids the problem of water supply being affected by torsion during grinding and scraping, and ensures the stability of water supply during the grinding and scraping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the bottom of the present invention;

[0034] Figure 3 It is a structural schematic diagram of the rotating mechanism of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the winding mechanism of the present invention;

[0036] Figure 5 It is a structural schematic diagram of the inner wall grinding and scraping assembly of the present invention;

[0037] Figure 6 It is a schematic structural diagram of the explosion of the inner wall grinding and scraping assembly of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the guide wheel of the present invention;

[0039] Figure 8 Schematic diagram of the structure of the grinding scraper and bristles of the present invention;

[0040] Figure 9 It is a structural schematic diagram of the twisted steel wire assembly of the present invention;

[0041] Figure 10 This is a schematic diagram of the structure of the upper and lower ends of the condensing copper tube of the present invention being bent;

[0042] Figure 11 This is a schematic diagram of the rolled-up condensing copper tube of the present invention.

[0043] In the figure: 1, water receiving trough; 2, vertical pole; 3, rotating mechanism; 4, fixed disk; 5, winding mechanism; 6, steel wire reinforced hose; 7, inner wall grinding and scraping assembly; 8, twisted wire assembly; 401, through hole; 201, installation space; 301, first motor; 302, first gear; 303, inner gear ring; 304, collar; 501, first support beam; 502, hydraulic cylinder; 503, U-shaped plate; 504, short pipe; 505, first winding wheel; 506, second motor; 507, interface; 71, first pipe assembly; 72, second pipe assembly; 73, second conical nozzle; 74, guide wheel; 75, grinding scraper; 76, bristles; 77, spring buckle; 78, first conical nozzle; 7101, first connecting pipe; 7102, first metal bellows; 7201, second connecting pipe; 72 02. Second metal bellows; 7401. First fixed ring; 7402. First movable ring; 7403. First support plate; 7404. Second support plate; 7405. Rectangular frame; 7406. Threaded ring; 7501. Second fixed ring; 7502. Second movable ring; 7503. Third support plate; 7504. Fourth support plate; 7505. Strip plate; 7506. Adjustment disk; 7507. Strong spring; 801. Second support beam; 802. Third motor; 803. Support block; 804. U-shaped frame; 805. Fourth motor; 806. Fifth motor; 807. Second winding wheel; 808. Second gear; 809. Column; 810. High carbon steel wire; 811. Hanging ring; 812. Water shield; 813. Z-shaped bending tube; 814. Grooved wheel; 815. Connecting shaft. DETAILED DESCRIPTION

[0044] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0045] See also Figures 1 to 11 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0046] The present invention provides a technical solution: a device for grinding and scraping the inner wall of a condensing copper tube. The device comprises a water collection trough 1, which serves as the foundational support for the entire device and collects wastewater generated during the grinding and scraping process. A vertical pole 2 is securely attached to the center of the trough 1. This pole not only provides support but also houses a key rotating mechanism 3, with a fixed plate 4 fixed to its top.

[0047] A mounting space 201 is pre-defined on the outer wall of the upright 2, and a first motor 301 is fixedly installed within this space. The output end of the first motor 301 is axially connected to a first gear 302, which meshes with an inner gear ring 303 that flexibly fits around the outer circumference of the upright 2. The top end of the inner gear ring 303 is fixedly connected to a collar 304 that rotatably fits around the outer wall of the upright 2. When the first motor 301 is turned on, its output shaft rotates the first gear 302, which in turn drives the inner gear ring 303, ultimately enabling the collar 304 to stably rotate around the upright 2.

[0048] The fixed disk 4 has a through hole 401, which is used to facilitate the passage of the copper tube end during subsequent grinding and scraping of the copper tube, making it easier for the equipment to perform grinding and scraping operations on the copper tube. A winding mechanism 5 is installed on one of the rotating mechanisms 3. The winding mechanism 5 is set on the outer periphery of the fixed disk 4 and can realize the lifting function.

[0049] The winding mechanism 5 includes a first support beam 501 fixedly connected to the outer wall of the collar 304. A hydraulic cylinder 502 is fixedly mounted on the first support beam 501. A U-shaped plate 503 is fixedly connected to the telescopic end of the top of the hydraulic cylinder 502. By controlling the telescopic movement of the hydraulic cylinder 502, the height of the U-shaped plate 503 can be flexibly adjusted, thereby adjusting the height of a first winding wheel 505 mounted on the U-shaped plate 503. A short tube 504 with one end open and the other end closed is rotatably connected to the side wall of the U-shaped plate 503. The first winding wheel 505 is fixedly connected to the outer wall of the short tube 504 located inside the U-shaped plate 503. A second motor 506 is fixedly mounted on the side wall of the U-shaped plate 503. The output end of the second motor 506 is axially connected to the closed end of the short tube 504. An interface 507 is rotatably connected to the outer wall of the open end of the short tube 504, which is fixedly connected to the side wall of the U-shaped plate 503. The steel-reinforced hose 6 is reeled in by the first reel 505. One end of the hose 6, away from the inner wall grinding and scraping assembly 7, communicates with the outer wall of the short tube 504. A port 507 is connected to the water supply port of a water pump for water supply. When the second motor 506 is activated, it drives the short tube 504 to rotate, which in turn drives the first reel 505 to rotate, completing the reeling and unreeling of the steel-reinforced hose 6.

[0050] The water outlet end of the steel wire reinforced hose 6 wound in the winding mechanism 5 is connected to an inner wall grinding and scraping assembly 7. A twisted wire assembly 8 located below the fixed disk 4 is installed on the other rotating mechanism 3.

[0051] The inner wall grinding and scraping assembly 7 plays a key role in the whole grinding and scraping process. It comprises a first pipe assembly 71 fixedly connected to the water outlet end of the steel wire reinforced hose 6.

[0052] The first pipe assembly 71 includes a first connecting pipe 7101 with a threaded outer wall. One end of the first connecting pipe 7101 is fixedly docked with the water outlet end of the steel-reinforced hose 6. The end of the first connecting pipe 7101, remote from the steel-reinforced hose 6, is fixedly docked with a first metal bellows 7102. The first metal bellows 7102 is flexible enough to adapt to the slight curvature of the copper tube's inner wall during the grinding and scraping process, ensuring smooth grinding and scraping. The end of the first metal bellows 7102, remote from the first connecting pipe 7101, is rotatably docked with the water inlet end of the first conical nozzle 78, allowing the first conical nozzle 78 to flexibly rotate relative to the first pipe assembly 71.

[0053] The end of the first conical spray head 78, away from the first tube assembly 71, is fixedly attached to the second tube assembly 72. The second tube assembly 72 includes a second connecting tube 7201, one end of which is fixedly docked with a second metal bellows 7202. The outlet end of the first conical spray head 78 is fixedly docked with one end of the second connecting tube 7201. The inlet end of the second conical spray head 73 is fixedly docked with the end of the second metal bellows 7202. A spring hook 77 is fixedly attached to the end of the second conical spray head 73.

[0054] The material of the bellows allows it to bend, so that the inner wall grinding and scraping assembly 7 can be bent in multiple sections.

[0055] Several guide wheels 74 are installed on the outer periphery of the first tube assembly 71 for guiding and tightening to the inner wall of the condensing copper tube. The specific installation method is that a first fixed ring 7401 is fixedly sleeved on the outer wall of the first connecting tube 7101, and a first movable ring 7402 is slidably sleeved on the outer wall of the first connecting tube 7101. The outer wall of the first fixed ring 7401 is provided with a plurality of first mounting grooves arranged in a circular array, and a first support plate 7403 is hinged in the plurality of first mounting grooves. The outer wall of the first movable ring 7402 is provided with a plurality of second mounting grooves arranged in a circular array, and a second support plate 7404 is hinged in the plurality of second mounting grooves. The first support plate 7403 and the second support plate 7404 are arranged in an eight-shaped pattern, and a rectangular frame 7405 is hinged at their ends. The guide wheel 74 is rotatably mounted on the inner wall of the rectangular frame 7405 by a pin shaft. A threaded ring 7406 is rotatably connected to the end of the first movable ring 7402, and is threadedly sleeved onto the threaded outer wall of the first connecting tube 7101. To adjust the tightness of the guide wheels 74 against the inner wall of the copper tube, the threaded ring 7406 is rotated toward the first fixed ring 7401, thereby pushing the first movable ring 7402 to move. The first support plate 7403 and the second support plate 7404 prop up the rectangular frame 7405 outward, thus adjusting the tightness of all guide wheels 74 against the inner wall of the copper tube. After adjustment, the inner wall grinding and scraping assembly 7 can be manually inserted into the copper tube with the assistance of staff.

[0056] Several grinding scrapers 75 and several bristles 76 are installed on the second tube assembly 72. Specifically, a second fixed ring 7501 is fixedly sleeved on the outer wall of the second connecting tube 7201, and a second movable ring 7502 is slidably sleeved on the outer wall of the second connecting tube 7201. The outer wall of the second fixed ring 7501 is provided with several third mounting grooves arranged in a circular array, and third support plates 7503 are hingedly connected to the several third mounting grooves. The outer wall of the second movable ring 7502 is provided with several fourth mounting grooves arranged in a circular array, and fourth support plates 7504 are hingedly connected to the several fourth mounting grooves. The third support plate 7503 and the fourth support plate 7504 are arranged in an "eight" shape, and a strip plate 7505 is hingedly connected to their ends. Several grinding scrapers 75 and several bristles 76 are fixedly arranged on the several strip plates 7505 at intervals. An adjustment disk 7506 is threadedly sleeved on the threaded outer wall of the second connecting tube 7201, and a strong spring 7507 is mounted on the outer wall of the second connecting tube 7201. The two ends of the strong spring 7507 are respectively pressed against the end faces of the second movable ring 7502 and the adjustment disk 7506. When it is necessary to adjust the degree to which the grinding scraper 75 and the bristles 76 are supported against the inner wall of the copper tube, the adjustment disk 7506 is rotated to move toward the second movable ring 7502. The strong spring 7507 pushes the second movable ring 7502, and the third support plate 7503 and the fourth support plate 7504 lift the strip plate 7505, thereby adjusting all the grinding scrapers 75 and the bristles 76 to be supported against the inner wall of the copper tube. After adjustment, the inner wall grinding and scraping assembly 7 can be manually assisted by the staff to be sent into the copper tube. The grinding scraper 75 not only scrapes the inner wall, but also polishes the inner wall of the tube.

[0057] The stranded wire assembly 8 includes a second support beam 801 fixedly connected to the outer wall of the collar 304. A third motor 802 and a support block 803 are fixedly mounted on the second support beam 801. The output end of the third motor 802 is connected to a U-shaped frame 804. When the third motor 802 is activated, it drives the U-shaped frame 804 to rotate around the upright 2.

[0058] The side walls of the U-shaped frame 804 are fixedly mounted with a fourth motor 805 and a fifth motor 806. A second winding wheel 807 is arranged inside the U-shaped frame 804. The output end of the fourth motor 805 is axially connected to the second winding wheel 807 and is used to control the winding and releasing of the high-carbon steel wire 810 by the second winding wheel 807. A Z-shaped bending tube 813 is fixedly mounted on the inner side wall of the U-shaped frame 804. The bending angles of the two bends of the Z-shaped bending tube 813 are set to be greater than 100 degrees, and the bends are arc-shaped transitions. When the U-shaped frame 804 rotates, the Z-shaped bending tube 813 rotates accordingly. The Z-shaped bending tube 813 can be used to shake the high-carbon steel wire 810 like a crank to cause it to rotate.

[0059] Two symmetrically arranged connecting shafts 815 are rotatably connected to the inner sidewall of the U-shaped frame 804. The end of one connecting shaft 815 is axially connected to the output terminal of the fifth motor 806. The outer walls of the two connecting shafts 815 are fixedly connected to two sheaves 814 and two second gears 808. Rubber rings are fixedly connected to the inner walls of the two sheaves 814, and the two second gears 808 are meshed with each other. A column 809 is fixedly connected to the end of the U-shaped frame 804 away from the third motor 802. The column 809 rotates through the sidewall of the support block 803. A Z-shaped bent tube 813 is located between the two sheaves 814 and the second winding wheel 807. A high-carbon steel wire 810 slides through the inner wall of the Z-shaped bent tube 813. The two rubber rings in the two sheaves 814 press against the outer wall of the high-carbon steel wire 810, and the high-carbon steel wire 810 slides through the axis of the column 809. When the fifth motor 806 is started, it rotates the two groove wheels 814 through the two second gears 808, and the two rubber rings are pressed against the upper and lower outer walls of the high-carbon steel wire 810 and rotate simultaneously, thereby transporting the high-carbon steel wire 810.

[0060] A hanging ring 811 is fixedly provided at one end of the high-carbon steel wire 810 away from the second winding wheel 807. The spring hook 77 on the end face of the second conical nozzle 73 in the inner wall grinding and scraping assembly 7 is hung on the hanging ring 811, realizing a detachable connection between the high-carbon steel wire 810 and the inner wall grinding and scraping assembly 7. A water shield 812 is fixedly connected to the side of the support block 803 near the hanging ring 811. The column 809 rotates through the water shield 812. The water shield 812 can prevent water from splashing onto the key components of the stranded wire assembly 8 during the grinding and scraping process, thereby affecting the normal operation of the equipment.

[0061] Implementation steps of grinding and scraping method:

[0062] Preparation S1: Place the coiled copper tube on the fixed plate 4. Bend the two ends of the tube horizontally to ensure the lower end can pass through the through-hole 401. This step prepares for the subsequent grinding and scraping work, ensuring that the copper tube can be stably placed on the equipment and facilitates subsequent operation of the copper tube by various components.

[0063] Equipment Commissioning and Component Positioning S2: Activate the rotating mechanism 3, causing it to rotate the stranded wire assembly 8 around the vertical pole 2. During this process, the operator aligns the end of the high-carbon steel wire 810 with the lower end of the copper tube. Simultaneously, the rotating mechanism 3 drives the reeling mechanism 5 to rotate around the fixed plate 4. By adjusting the hydraulic cylinder 502, the height of the reeling mechanism 5 is adjusted, aligning the upper end of the copper tube toward the reeling mechanism 5. This step completes the initial commissioning and positioning of the equipment components, laying the foundation for the smooth feeding of the high-carbon steel wire 810 into the copper tube and the subsequent connection of the inner wall grinding and scraping assembly 7.

[0064] High-carbon steel wire threading (S3): Insert the end of high-carbon steel wire 810 into the lower end of the copper tube, and activate the wire twisting assembly 8. The fourth motor 805 in the wire twisting assembly 8 drives the second reel 807 to release the high-carbon steel wire 810. Simultaneously, the fifth motor 806 rotates the two sheaves 814, compressing the high-carbon steel wire 810 through the rubber ring and feeding it into the copper tube until it emerges from the upper end. This step successfully completes the penetration of the high-carbon steel wire 810 into the copper tube, providing a connection medium for the subsequent pulling and rotating inner wall grinding and scraping assembly 7.

[0065] Component Connection and Initial Advancement S4: Connect the end of the high-carbon steel wire 810 to the inner wall grinding and scraping assembly 7. Specifically, hook the spring hook 77 on the end face of the second conical nozzle 73 in the inner wall grinding and scraping assembly 7 to the hook 811 at the end of the high-carbon steel wire 810. Once connected, the third motor 802 in the stranded wire assembly 8 is activated. This drives the U-shaped frame 804 to rotate, which in turn drives the Z-bend tube 813, which in turn swings the high-carbon steel wire 810. Simultaneously, the fourth motor 805 reels the high-carbon steel wire 810. Initially, a worker manually assists the inner wall grinding and scraping assembly 7 in entering the upper end of the copper tube. This step connects the inner wall grinding and scraping assembly 7 to the high-carbon steel wire 810 and initiates the initial drive of the inner wall grinding and scraping assembly 7. Combined with manual assistance, this step ensures that the inner wall grinding and scraping assembly 7 can smoothly enter the copper tube.

[0066] Grinding and scraping process S5: As the high-carbon steel wire 810 is pulled and rotated, the second conical nozzle 73, the second pipe assembly 72, and the first conical nozzle 78 connected thereto are driven to rotate. At this time, the grinding scraper 75 and the bristles 76 installed on the second pipe assembly 72 rotate synchronously, grinding, scraping, and brushing the oxide scale and dirt on the inner wall of the copper pipe. At the same time, the water pump supplies water to the steel wire reinforced hose 6 through the interface 507. After passing through the first pipe assembly 71, the water is sprayed out from the first conical nozzle 78 and the second conical nozzle 73 to brush the inner wall of the copper pipe. During this process, several guide wheels 74 are tightened to the inner wall of the copper pipe. The guide wheels 74 roll on the inner wall of the copper pipe. Due to the action of the guide wheels 74, the first pipe assembly 71 does not rotate, while the first conical nozzle 78 rotates at the end of the first pipe assembly 71, thereby preventing the steel wire reinforced hose 6 from rotating and ensuring the stability of the water supply. This step is the core of the entire grinding and scraping process. By combining mechanical rotation with hydraulic flushing, the inner wall of the copper tube is efficiently ground and scraped.

[0067] Wastewater collection S6: Wastewater generated during the grinding and scraping process is discharged from the lower port of the copper tube and directly flows into the water receiving tank 1. The water receiving tank 1 collects wastewater, facilitates subsequent unified treatment of wastewater, prevents wastewater from flowing everywhere, and keeps the working environment clean.

[0068] Component Separation S7: After the high-carbon steel wire 810 pulls the inner wall grinding and scraping assembly 7 out of the lower end of the copper tube, the operator disconnects the high-carbon steel wire 810 from the inner wall grinding and scraping assembly 7, that is, disconnects the spring buckle 77 from the hanging ring 811. This step prepares for the subsequent resetting of the various components of the equipment and the grinding and scraping.

[0069] Hose Rewinding S8: The second motor 506 in the rewinding mechanism 5 is activated, which drives the short tube 504 to rotate, thereby driving the first reel 505 to rotate, rewinding the steel-reinforced hose 6 and pulling it out of the copper tube. This step resets the steel-reinforced hose 6, facilitating the next use of the device.

[0070] Drying S9: Connect the hot air blower outlet to the upper end of the copper tube. The hot air blower is discharged from the lower end of the copper tube to dry the inner wall of the tube. After grinding and scraping, the inner wall of the copper tube may contain residual moisture. Drying with a hot air blower can prevent rust on the inner wall of the copper tube due to residual moisture and ensure the quality of the copper tube.

[0071] Through the above detailed implementation methods, the inner wall grinding and scraping equipment for manufacturing the condenser copper tube of the present invention can grind and scrape the inner wall of the condenser copper tube efficiently and stably to meet the needs of actual production.

[0072] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A device for grinding and scraping the inner wall of a condensing copper tube, comprising a water receiving trough (1), characterized in that: A vertical rod (2) is fixedly connected to the center of the water receiving trough (1), two rotating mechanisms (3) are installed on the vertical rod (2), and a fixed disk (4) is fixedly connected to the top of the vertical rod (2); a through hole (401) is provided on the fixed disk (4), and a reeling mechanism (5) is installed on one of the rotating mechanisms (3) and is arranged on the outer periphery of the fixed disk (4) and can be raised and lowered; a steel wire reinforced hose (6) is reeled in the reeling mechanism (5), and the water outlet end of the steel wire reinforced hose (6) is connected to an inner wall grinding and scraping component (7), and a twisted steel wire component (8) located below the fixed disk (4) is installed on the other rotating mechanism (3); The inner wall grinding and scraping assembly (7) includes a first pipe assembly (71) fixedly connected to the water outlet end of the steel wire reinforced hose (6), a first conical nozzle (78) is rotatably installed at the end of the first pipe assembly (71), a second pipe assembly (72) is fixedly installed at one end of the first conical nozzle (78) away from the first pipe assembly (71), a second conical nozzle (73) is fixedly connected to the end of the second pipe assembly (72), a plurality of guide wheels (74) are installed on the outer periphery of the first pipe assembly (71) for guiding and tightening to the inner wall of the condensing copper tube; a plurality of grinding scrapers (75) and a plurality of bristles (76) are installed on the second pipe assembly (72); The end surface of the second conical nozzle (73) is fixedly connected with a spring buckle (77); The twisted steel wire assembly (8) includes a second winding wheel (807), and a high-carbon steel wire (810) is wound in the second winding wheel (807); the high-carbon steel wire (810) is detachably connected to the inner wall grinding and scraping assembly (7) and is used to pull and rotate the inner wall grinding and scraping assembly (7); The stranded steel wire assembly (8) includes a second support beam (801) fixedly connected to the outer wall of the ring (304), a third motor (802) and a support block (803) are fixedly mounted on the second support beam (801), an output end shaft of the third motor (802) is connected to a U-shaped frame (804), a fourth motor (805) and a fifth motor (806) are fixedly mounted on the side wall of the U-shaped frame (804), and the second winding wheel (807) is arranged inside the U-shaped frame (804). The output end of the fourth motor (805) is axially connected to the second winding wheel (807), and a Z-shaped bending tube (813) is fixedly installed on the inner wall of the U-shaped frame (804). The bending angles of the two bending parts of the Z-shaped bending tube (813) are set to be greater than 100 degrees, and the bending parts are arc-shaped transitions; the inner wall of the U-shaped frame (804) is rotatably connected to two connecting shafts (815) set symmetrically up and down, and the end of one of the connecting shafts (815) is connected to the output of the fifth motor (806). The end shafts are connected, the outer walls of the two connecting shafts (815) are fixedly sleeved with two groove wheels (814) and two second gears (808), the inner walls of the two groove wheels (814) are fixedly sleeved with rubber rings, and the two second gears (808) are meshed with each other. The end of the U-shaped frame (804) away from the third motor (802) is fixedly penetrated with a column (809), and the column (809) rotates through the side wall of the support block (803). The Z-shaped bending tube (813) is located between the two groove wheels ( 814) and the second winding wheel (807), the high carbon steel wire (810) slides through the inner wall of the Z-shaped bending tube (813), the two rubber rings in the two groove wheels (814) are pressed against the outer wall of the high carbon steel wire (810), the high carbon steel wire (810) slides through the axis of the column (809), and a hanging ring (811) is fixedly provided at one end of the high carbon steel wire (810) away from the second winding wheel (807), and the spring buckle (77) is hung on the hanging ring (811).

2. The inner wall grinding and scraping equipment for manufacturing a condenser copper tube according to claim 1, characterized in that: An installation space (201) is provided on the outer wall of the vertical pole (2). The rotating mechanism (3) comprises a first motor (301) fixedly installed in the installation space (201). The output end of the first motor (301) is connected to a first gear (302). The first gear (302) is engaged with an inner gear ring (303) movably sleeved on the outer periphery of the vertical pole (2). The top end of the inner gear ring (303) is fixedly connected to a collar (304) rotatably sleeved on the outer wall of the vertical pole (2).

3. The inner wall grinding and scraping equipment for manufacturing a condenser copper tube according to claim 2, characterized in that: The winding mechanism (5) comprises a first support beam (501) fixedly connected to the outer wall of the collar (304); a hydraulic cylinder (502) is fixedly mounted on the first support beam (501); a telescopic end of the top of the hydraulic cylinder (502) is fixedly connected to a U-shaped plate (503); a short tube (504) with an open end is rotatably connected to the side wall of the U-shaped plate (503); the other end of the short tube (504) is closed; and a first winding wheel (505) is fixedly sleeved on the outer wall of the short tube (504) located inside the U-shaped plate (503). A second motor (506) is fixedly mounted on the side wall of the U-shaped plate (503); an output end of the second motor (506) is axially connected to the closed end of the short tube (504); an interface (507) is rotatably sleeved on the outer wall of the open end of the short tube (504) for connecting to a water inlet pipe; the interface (507) is fixedly connected to the side wall of the U-shaped plate (503); the steel wire reinforced hose (6) is reeled in by a first reeling wheel (505), and a port of the steel wire reinforced hose (6) away from the inner wall grinding and scraping assembly (7) is communicated with the outer wall of the short tube (504).

4. The inner wall grinding and scraping equipment for manufacturing a condenser copper tube according to claim 1, characterized in that: The first pipe assembly (71) comprises a first connecting pipe (7101) having an outer wall provided with threads, one end of the first connecting pipe (7101) being fixedly docked with the water outlet end of the steel wire reinforced hose (6), and one end of the first connecting pipe (7101) away from the steel wire reinforced hose (6) being fixedly docked with a first metal bellows (7102); One end of the first metal bellows (7102) away from the first connecting pipe (7101) is rotatably connected to the water inlet end of the first conical nozzle (78); The second pipe assembly (72) comprises a second connecting pipe (7201), one end of the second connecting pipe (7201) being fixedly connected to a second metal bellows (7202); The first conical nozzle (78) is provided with a water outlet end, and the water outlet end is fixedly connected to an end of the second connecting pipe (7201); The water inlet end of the second conical nozzle (73) and the port of the second metal bellows (7202) are fixedly connected.

5. The inner wall grinding and scraping equipment for manufacturing a condenser copper tube according to claim 4, characterized in that: The outer wall of the first connecting tube (7101) is fixedly sleeved with a first fixed ring (7401), and the outer wall of the first connecting tube (7101) is slidably sleeved with a first movable ring (7402); the outer wall of the first fixed ring (7401) is provided with a plurality of first mounting grooves arranged in a circular array, and a plurality of first mounting grooves are hingedly connected to first support plates (7403); the outer wall of the first movable ring (7402) is provided with a plurality of second mounting grooves arranged in a circular array, and a plurality of second supporting plates (7404) are hingedly connected to second support plates (7404); the first support plates (7403) and the second support plates (7404) are arranged in an "eight" shape, and their ends are hingedly connected to a rectangular frame (7405); the guide wheel (74) is rotatably mounted on the inner wall of the rectangular frame (7405) through a pin shaft, and a threaded ring (7406) is rotatably connected to the end of the first movable ring (7402), and the threaded ring (7406) is threadedly sleeved on the threaded outer wall of the first connecting tube (7101).

6. The inner wall grinding and scraping equipment for manufacturing condenser copper tubes according to claim 4, characterized in that: The outer wall of the second connecting tube (7201) is fixedly sleeved with a second fixed ring (7501), and the outer wall of the second connecting tube (7201) is slidably sleeved with a second movable ring (7502); the outer wall of the second fixed ring (7501) is provided with a plurality of third mounting grooves arranged in an annular array, and a third support plate (7503) is hingedly connected to a plurality of the third mounting grooves; the outer wall of the second movable ring (7502) is provided with a plurality of fourth mounting grooves arranged in an annular array, and a fourth support plate (7504) is hingedly connected to a plurality of the fourth mounting grooves; the third support plate (75 03) and the fourth support plate (7504) are arranged in an eight-shaped pattern, and the ends thereof are hingedly connected to a strip plate (7505); a plurality of the grinding scrapers (75) and a plurality of the bristles (76) are fixedly arranged on the plurality of strip plates (7505) at intervals, an adjusting disk (7506) is threadedly sleeved on the threaded outer wall of the second connecting tube (7201), and a strong spring (7507) is sleeved on the outer wall of the second connecting tube (7201); the two ends of the strong spring (7507) are respectively pressed against the end faces of the second movable ring (7502) and the adjusting disk (7506).

7. The inner wall grinding and scraping equipment for manufacturing condenser copper tubes according to claim 1, characterized in that: A water shield (812) is fixedly connected to one side of the support block (803) close to the hanging ring (811), and the column (809) rotates through the water shield (812).

8. A method for grinding and scraping the inner wall of a condenser copper tube, characterized in that: The inner wall grinding and scraping equipment of the condensing copper tube according to any one of claims 1 to 7 is manufactured, and further includes a hot air blower, and the specific steps are as follows: S1, placing the copper tube rolled into a disk on a fixed disk (4), bending the two ends of the copper tube into a horizontal shape, and passing the lower end through the through hole (401); S2, the rotating mechanism (3) drives the stranded steel wire assembly (8) to rotate around the vertical rod (2), aligning the end of the high carbon steel wire (810) with the lower end of the copper tube, and the rotating mechanism (3) drives the reeling mechanism (5) to rotate around the fixed disk (4), while adjusting the height of the reeling mechanism (5) to align the upper end of the copper tube with the direction of the reeling mechanism (5); S3, inserting the end of the high carbon steel wire (810) into the lower end of the copper tube, and the twisted wire assembly (8) feeds the high carbon steel wire (810) into the copper tube and out from the upper end of the copper tube; S4, the end of the high-carbon steel wire (810) is connected to the inner wall grinding and scraping assembly (7), the twisted wire assembly (8) rotates itself to twist the high-carbon steel wire (810), and the high-carbon steel wire (810) is wound at the same time, and the staff manually assists the inner wall grinding and scraping assembly (7) to enter from the upper end of the copper tube; S5, the high carbon steel wire (810) is pulled and rotated at the same time, driving the second conical nozzle (73), the second tube assembly (72), and the first conical nozzle (78) to rotate, and the grinding scraper (75) and the bristles (76) rotate synchronously to grind, scrape and sweep the oxide scale and dirt on the inner wall of the copper tube; at the same time, the first conical nozzle (78) and the second conical nozzle (73) brush the inner wall of the copper tube; At the same time, a plurality of guide wheels (74) are supported on the inner wall of the copper tube, and the guide wheels (74) roll on the inner wall of the copper tube to prevent the first tube assembly (71) from rotating, and the first conical nozzle (78) rotates at the end of the first tube assembly (71), thereby preventing the steel wire reinforced hose (6) from rotating; S6, wastewater is discharged from the lower end of the copper tube and flows into the water receiving tank (1); S7, after the high carbon steel wire (810) pulls the inner wall grinding and scraping assembly (7) out of the lower end of the copper tube, the high carbon steel wire (810) and the inner wall grinding and scraping assembly (7) are disassembled; S8, the reeling mechanism (5) reels the steel wire reinforced hose (6) and pulls it out of the copper tube; S9, connect the air outlet of the hot air blower to the upper end of the copper pipe, and the hot air is discharged from the lower end of the copper pipe to dry the inner wall of the pipe.

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