Degreasing device and method for small-caliber seamless pipe

Abstract

The invention discloses a degreasing device for a small-caliber seamless pipe, and belongs to the technical field of pipe processing, the degreasing device comprises an oil scraping mechanism, an inner degreasing mechanism, an adjusting mechanism, an outer degreasing mechanism and a felt plug beating mechanism, the oil scraping mechanism comprises an outer wall oil wiper and an inner wall oil wiper, the outer wall oil wiper is located at a pipe rolling outlet end, and the inner wall oil wiper is located at a pipe rolling outlet end; the outer wall oil scraper is used for conducting floating oil pretreatment on the outer surface of the pipe just subjected to cold machining, and the inner wall oil scraper is used for removing floating oil on the inner wall of the pipe. According to the outer wall oil scraper, the oil scraping tank, the oil scraping groove and the nylon guide sleeve are arranged, so that a pipe which is just rolled penetrates through the nylon guide sleeve, floating oil on the outer surface is synchronously scraped in the rolling and extending process of the pipe by means of attached contact between the guide sleeve and the outer wall of the pipe, and the consumption of a cleaning agent in the subsequent degreasing procedure is reduced; and due to the conical structure and the flexible material of the nylon guide sleeve, the oil scraping effect can be ensured, and the outer surface of the pipe can be prevented from being scratched.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pipe processing, and particularly relates to a degreasing device and method for small-diameter seamless pipes. BACKGROUND

[0002] Small-diameter seamless pipes are widely used in high-end fields such as aerospace, petrochemical industry and medical devices due to their high strength, high sealing property and excellent forming property. During the cold processing of the small-diameter seamless pipes, lubricating media such as rolling oil and drawing oil are used to reduce the friction coefficient and avoid scratches on the surface of the pipes. Therefore, the residual oil on the inner and outer walls of the pipes must be removed through a degreasing process after the cold processing, otherwise the carbonization of the oil during the subsequent heat treatment process will cause the pipes to be carburized and nitrided, which will damage the corrosion resistance and produce a surface fine-grain layer, and thus seriously affect the product quality.

[0003] With the increasing requirement for the precision of small-diameter seamless pipes in high-end fields, the degreasing process has become a key link restricting the processing quality of the small-diameter seamless pipes. The industry has gradually developed from traditional manual degreasing to automatic degreasing equipment.

[0004] However, the existing degreasing device for small-diameter seamless pipes has the following problems during use: Firstly, a rigid scraper is usually used to remove floating oil in the pretreatment stage. However, the rigid scraper cannot completely adhere to the inner wall of the small-diameter pipe due to the narrow space of the inner wall of the small-diameter pipe. Especially for the small protrusions on the inner wall after the cold processing, the removal rate of the floating oil is insufficient, and the rigid scraper is easy to scratch the smoothness of the inner wall of the pipe, which affects the precision of the product. Secondly, the inner wall brush in the deep degreasing stage is usually in a straight pipe structure, which can only realize one-way straight-line brushing and cannot cover all areas of the inner wall of the pipe. The removal rate of stubborn oil is insufficient, which may cause local carburization after heat treatment. Thirdly, the existing equipment lacks an effective cleanliness detection link, and only manual visual judgment can be used to accurately identify the microscopic residual oil stains on the inner wall. SUMMARY

[0005] The purpose of the present application is to provide a degreasing device and method for small-diameter seamless pipes, which can solve the problems of complicated degreasing process flow, high personnel cost and difficult to ensure the cleaning effect in the existing small-diameter pipe cleaning technology.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: The degreasing device for small-diameter seamless pipe comprises an oil scraping mechanism, an inner degreasing mechanism, an adjusting mechanism and an outer degreasing mechanism.

[0007] Preferably, the outer wall oil scraper comprises a first support frame on which an oil scraping tank is mounted, the oil scraping tank is provided with an oil scraping groove, and the bottom of the oil scraping tank is provided with an oil discharge pipe; a plurality of nylon guide sleeves are mounted in the oil scraping groove and are in a conical structure.

[0008] Preferably, the inner wall oil scraper comprises an air nozzle, one end of which is connected with an air inlet pipe and the other end of which is connected with a first pneumatic clamp; the first pneumatic clamp is provided with a sponge placing groove for placing a cleaning sponge; a plugging pipe is in sliding connection with the first pneumatic clamp and is used for plugging the sponge placing groove; a second pneumatic clamp is used for clamping and fixing the pipe in cooperation with the first pneumatic clamp, and the end of the second pneumatic clamp away from the first pneumatic clamp is connected with a sponge collector.

[0009] Preferably, the inner degreasing mechanism comprises a first clamping lock pipe and a second clamping lock pipe, the second clamping lock pipe and the first clamping lock pipe are both provided with a sealing rubber ring and a proximity switch and are both connected with a liquid passage pipe; a moving rod is provided with a spiral distributed brush in the middle part and is provided with a metal nylon block at both ends.

[0010] Preferably, the adjusting mechanism comprises a fixed frame provided with a sliding groove, a sliding frame in sliding connection with the sliding groove, a tank drag chain installed on the fixed frame and fixedly connected with the sliding frame, a connecting rod in sliding connection with the sliding frame, a connecting plate installed on the connecting rod and fixedly connected with the second clamping lock pipe.

[0011] Preferably, the outer degreasing mechanism comprises a cleaning tank containing two degreasing cleaning grooves and one pure water cleaning groove, two groups of pipe clamping and conveying assemblies arranged on the two sides of the cleaning tank, a plurality of double-brush cleaning roller brush assemblies, each double-brush cleaning roller brush assembly comprising two second motors, the two second motors being installed on the outer surface of the cleaning tank and being in rotational connection with the cleaning tank through the power output shafts thereof, and a roller brush being installed on the power output shaft of each second motor, and a plurality of flushing assemblies, each flushing assembly comprising a hollow pipe and a conveying pipe, the hollow pipe and the conveying pipe being fixedly connected and in internal communication, and a plurality of water injection holes being formed in the inner wall of the hollow pipe.

[0012] Preferably, the pipe clamping assembly includes: a hollow box with support legs installed at its bottom; two sets of clamping components, each rotatably connected to the top surface of the hollow box, each including: a rotating cylinder with multiple mounting slots and multiple guide slots, and a piston chamber at its top; multiple airbags, each installed in one of the mounting slots and communicating with the piston chamber; multiple rubber blocks, each slidably connected to the guide slots via sliders, and each slider being equipped with a spring; a piston plate, slidably installed in the piston chamber, with an adjusting screw rotatably connected to its top, the adjusting screw being threadedly connected to the rotating cylinder, and a turntable installed at the upper end of the adjusting screw; and a driving component for driving the two sets of clamping components to rotate synchronously.

[0013] Preferably, the driving component includes: a first motor, mounted on the bottom surface of the hollow box, with a driving gear mounted on its power output shaft; and two driven gears, both meshing with the driving gear, and respectively fixedly connected to the two rotating cylinders via connecting columns.

[0014] Preferably, the felt plugging mechanism includes: a felt plug pneumatic clamp; a felt plug receiver connected to the felt plug pneumatic clamp via a pipe, wherein the felt plug receiver and the felt plug pneumatic clamp are both located on the same conveying track.

[0015] The method of using a degreasing device for small-diameter seamless pipes includes the following steps: Step 1: Pass one end of the freshly rolled small-diameter seamless pipe through the nylon guide sleeve of the outer wall scraper. As the pipe extends during rolling, the nylon guide sleeve simultaneously scrapes away the floating oil on the outer surface of the pipe. Step 2: Clamp both ends of the pipe using the first and second pneumatic clamps. Open the sponge placement groove in the sliding sealing tube, place a cylindrical cleaning sponge inside, and then close the sponge placement groove using the sliding sealing tube. Open the valve to allow gas to enter the first pneumatic clamp through the air nozzle, thereby pushing the cleaning sponge to move along the inside of the pipe. As the cleaning sponge moves, it will rub and remove the floating oil on the inner wall. Step 3: Place the moving rod equipped with a spiral distributed brush into the pipe, and place the liquid receiving container below the liquid passage pipe. Start the delivery pump to deliver degreasing agent into the pipe. The degreasing agent pushes the brush to move spirally towards the second clamping locking tube. When the proximity switch senses the metal nylon block... Connect the delivery pump's inlet pipe to another inlet pipe, and drive the brush to move in the opposite direction by delivering degreasing agent, repeating this process ten times; then switch to pure water delivery, repeating the reciprocating rinsing process three times, and finally deliver air into the inlet pipe using a blower to dry the residual liquid on the inner wall; Step four, place the pipe between two sets of pipe clamping components, and adjust the extension distance of the rubber block to make the rubber block fit against the outer wall of the pipe; then start the first motor, which drives the rotating drum to rotate through the drive gear and driven gear, thereby delivering the pipe, so that the pipe passes through the degreasing cleaning tank and the pure water cleaning tank in sequence, and the outer wall of the pipe is brushed by multiple sets of double brush cleaning roller components and multiple sets of rinsing components; Step five, introduce gas into the felt plug pneumatic clamp, so that the gas pushes the felt plug and white cloth along the inner wall of the pipe, and finally is retrieved by the felt plug receiver; observe whether there is any oil residue on the surface of the white cloth, and if there is no visible oil, the cleaning is deemed qualified.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The external wall oil scraper of the present invention is provided with an oil scraping box, an oil scraping groove and a nylon guide sleeve. The freshly rolled pipe passes through the nylon guide sleeve. By using the close contact between the guide sleeve and the outer wall of the pipe, the floating oil on the outer surface is scraped off simultaneously with the rolling and extension process of the pipe, reducing the amount of cleaning agent consumed in the subsequent degreasing process. Moreover, the conical structure and flexible material of the nylon guide sleeve can not only ensure the oil scraping effect, but also avoid scratching the outer surface of the pipe.

[0017] 2. The inner wall scraper of this invention comprises an air nozzle, a first pneumatic clamp, a cleaning sponge, a sponge placement groove, a sealing tube, a second pneumatic clamp, and a sponge collector. The first and second pneumatic clamps fix both ends of the pipe. The cleaning sponge is then placed in the sponge placement groove of the first pneumatic clamp. After the sealing tube is closed, gas is introduced, causing the gas to push the cleaning sponge to move at high speed along the inner wall of the pipe, rubbing away the floating oil on the inner wall. By utilizing the flexible expansion characteristics of the sponge, it can adapt to the irregular areas of the inner wall of small-diameter pipes. Compared with rigid scrapers, the inner wall floating oil removal rate is higher, and it will not damage the smoothness of the inner wall of the pipe.

[0018] 3. The degreasing device for small-diameter seamless pipes in this invention features an internal degreasing mechanism. By inserting a movable rod equipped with a spiral distributed brush into the pipe, degreasing agent is delivered into the pipe through a liquid pipe, driving the brush to move spirally back and forth. Subsequently, pure water is used for rinsing and compressed air is introduced for drying, thus cleaning the inner wall of the pipe. The gaps between the bristles of the spiral distributed brush can accommodate the degreasing agent. Combined with the spiral movement trajectory, it can achieve a dual effect of brushing and rinsing on the inner wall of the pipe. Compared with traditional straight pipe brushes, it can significantly improve the removal rate of oil stains on the inner wall and avoid carburizing and nitriding problems after heat treatment.

[0019] 4. The degreasing device for small-diameter seamless pipes in this invention is provided with an external degreasing mechanism. The pipe is conveyed through the pipe clamping component, so that the pipe passes through the degreasing cleaning tank and the pure water cleaning tank of the cleaning box. Then, the outer wall of the pipe is brushed by the two sets of rollers of the double brush cleaning roller assembly, while the hollow tube of the rinsing component sprays cleaning liquid to achieve degreasing and rinsing of the outer wall.

[0020] 5. The degreasing device for small-diameter seamless pipes in this invention is equipped with a felt plug mechanism. By placing a clean felt plug and a white cloth on a felt plug pneumatic clamp, gas is introduced to push them to move along the inner wall of the pipe, and finally the felt plug is recovered by the felt plug receiver. The cleanliness of the inner wall is judged by observing the oil stain residue on the white cloth. The compression characteristics of the felt plug can simulate the actual contact state of the inner wall. Compared with traditional visual inspection or sampling inspection, it can more accurately reflect the microscopic cleanliness of the inner wall of the pipe and avoid product scrap due to substandard cleanliness.

[0021] 6. The external degreasing mechanism in this invention sets up a pipe clamping assembly, adjusts the position of the piston plate by rotating the turntable, controls the expansion or contraction of the airbag, and then moves the rubber block along the guide groove, so that the pipe clamping assembly can be adapted to pipes of different outer diameters. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the internal structure of the oil scraper box in the outer wall oil scraper of the present invention; Figure 2 This is a front view of the oil scraper tank in this invention; Figure 3 This is a perspective view of the inner wall scraper in this invention; Figure 4 This is a schematic diagram of the internal structure of the inner wall scraper in this invention; Figure 5 This is a front view of the inner wall scraper in this invention; Figure 6 This is a perspective view of the first clamping locking tube in this invention; Figure 7 This is a schematic diagram of the internal structure of the first clamping locking tube in this invention; Figure 8 This is a schematic diagram of the assembly structure of the movable rod, brush, metal nylon block and tube in this invention; Figure 9 This is a front view of the movable rod, brush, and metal nylon block in this invention; Figure 10 This is a perspective view of the movable rod, brush, and metal nylon block in this invention; Figure 11 This is a perspective view of the adjustment mechanism in this invention; Figure 12 This is a perspective view of the external degreasing mechanism in this invention; Figure 13 This is a schematic diagram of the internal structure of the cleaning tank in this invention; Figure 14 This is a schematic diagram of the assembly structure of the roller brush and the pipe in this invention; Figure 15 This is a perspective view of the pipe clamping assembly in this invention; Figure 16 This is a perspective view of the driving component in this invention; Figure 17 This is an exploded view of the clamping component in this invention; Figure 18 This is a schematic diagram of the internal structure of the rotating cylinder in this invention; Figure 19 This is a perspective view of the felting plug mechanism in this invention; Reference numerals: 100, oil scraping mechanism; 110, outer wall oil scraper; 111, first support frame; 112, oil scraper box; 113, oil scraper groove; 114, nylon guide sleeve; 115, oil drain pipe; 120, inner wall oil scraper; 121, air nozzle; 122, air inlet pipe; 123, valve; 124, first pneumatic clamp; 125, cleaning sponge; 126, sponge placement groove; 127, sealing pipe; 128, second pneumatic clamp; 129. 200. Sponge collector; 201. Internal degreasing mechanism; 202. First clamping locking tube; 203. Second clamping locking tube; 204. Sealing ring; 205. Proximity switch; 206. Liquid inlet pipe; 211. Moving rod; 212. Brush; 213. Metal nylon block; 300. Adjusting mechanism; 301. Fixing frame; 302. Slide groove; 303. Sliding frame; 304. Tank drag chain; 305. Connecting rod; 306. Connecting plate; 400. External degreasing mechanism. Mechanism; 410. Cleaning tank; 411. Degreasing cleaning tank; 412. Pure water cleaning tank; 413. Drain pipe; 420. Pipe clamping assembly; 421. Hollow box; 422. Support leg; 423. Clamping component; 4231. Rotating cylinder; 4232. Adjusting screw; 4233. Turntable; 4234. Piston plate; 4235. Mounting groove; 4236. Guide groove; 4237. Rubber block; 4238. Spring; 4239. Airbag ; 424, Drive component; 4241, First motor; 4242, Drive gear; 4243, Connecting column; 4244, Driven gear; 430, Speed ​​sensor; 440, Dual-brush cleaning roller assembly; 441, Second motor; 442, Roller brush; 450, Rinsing assembly; 451, Hollow tube; 452, Conveying pipe; 500, Felt plug mechanism; 501, Felt plug pneumatic clamp; 502, Felt plug receiver; 503, Conveying track. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0027] This invention is described in detail with reference to the accompanying drawings. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not to scale. Furthermore, the accompanying drawings are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0028] Furthermore, it should be noted in the description of this invention that the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this invention should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Example 1: As Figures 1-19 As shown, the degreasing device for small-diameter seamless pipes includes an outer wall scraper 110, an inner degreasing mechanism 200, an adjusting mechanism 300, an outer degreasing mechanism 400, and a felting plug mechanism 500.

[0031] like Figures 1-4 As shown, the oil scraping mechanism 100 includes an outer wall oil scraper 110 and an inner wall oil scraper 120. The outer wall oil scraper 110 is located at the pipe rolling outlet end. The outer wall oil scraper 110 includes a first support frame 111. An oil scraping box 112 is installed on the first support frame 111. An oil scraping groove 113 is provided inside the oil scraping box 112. The top of the oil scraping box 112 is open. An oil drain pipe 115 is provided at the bottom of the oil scraping box 112. A plurality of nylon guide sleeves 114 are installed inside the oil scraping box 112. The nylon guide sleeves 114 are located inside the oil scraping groove 113.

[0032] The external wall scraper 110 uses a uniform diameter nylon tapered guide sleeve to remove grease from the outer surface as the pipe is rolled and extended. The external wall scraper 110 does not require manual intervention, which can reduce labor costs.

[0033] The inner wall scraper 120 is located on the pipe conveying platform and adopts sponge pneumatic purging oil removal technology. The inner wall scraper 120 includes an air nozzle 121, a first pneumatic clamp 124, a sealing pipe 127, a second pneumatic clamp 128, and a sponge collector 129.

[0034] An air inlet pipe 122 is installed at one end of the air nozzle 121, which is used to connect to the air supply equipment. A valve 123 is installed on the air nozzle 121. A first pneumatic clamp 124 is installed at the end of the air nozzle 121 away from the air inlet pipe 122. The first pneumatic clamp 124 and a second pneumatic clamp 128 are used to clamp both ends of the pipe. A sponge placement groove 126 is provided on the first pneumatic clamp 124. The sponge placement groove 126 facilitates the placement of a cleaning sponge 125 inside the first pneumatic clamp 124. A sealing pipe 127 is slidably connected to the first pneumatic clamp 124 to seal the sponge placement groove 126. A sponge collector 129 is connected to the second pneumatic clamp 128 and is used to receive the cleaning sponge 125 delivered by the second pneumatic clamp 128.

[0035] Specifically, the pipe to be cleaned is clamped by using the first pneumatic clamp 124 and the second pneumatic clamp 128. The sealing tube 127 is slid to stop blocking the sponge placement groove 126. The cleaning sponge 125 is placed in the first pneumatic clamp 124. The sealing tube 127 is slid to block the sponge placement groove 126. The cleaning sponge 125 is cylindrical and its outer diameter is larger than the inner diameter of the pipe.

[0036] Then, by opening valve 123, the external air supply equipment sends high-pressure gas into the first pneumatic clamp 124 through air nozzle 121. The high-pressure gas pushes the cleaning sponge 125 to move, allowing the cleaning sponge 125 to enter the pipe. Under the action of air pressure, the cleaning sponge 125 moves at high speed along the inner wall of the pipe and fully rubs the inner wall of the pipe to remove oil. The sponge collector 129 collects the oily sponge that has been transported.

[0037] Most of the grease on the inner and outer surfaces of cold-worked pipes can be removed by the outer wall scraper 110 and the inner wall scraper 120.

[0038] like Figure 6 and Figure 7 As shown, the internal degreasing mechanism 200 includes a first clamping locking tube 201 and a second clamping locking tube 202. Both the first clamping locking tube 201 and the second clamping locking tube 202 are equipped with sealing rings 203 and proximity switches 204. Both the first clamping locking tube 201 and the second clamping locking tube 202 are equipped with fluid-passing tubes 205. The second clamping locking tube 202 has the same structure as the first clamping locking tube 201. The proximity switch 204 is an inductive proximity switch.

[0039] The first clamping locking tube 201 and the second clamping locking tube 202 are used to clamp the pipe. The sealing ring 203 can ensure the connection between the first clamping locking tube 201 and the second clamping locking tube 202 and the pipe, and prevent liquid leakage during degreasing and cleaning.

[0040] Specifically, by placing the receiving container directly below the first clamping locking tube 201, the receiving container can collect the liquid discharged from the liquid passage pipe 205 connected to the first clamping locking tube 201. Then, by connecting the delivery pipe of the transfer pump to the second clamping locking tube 202, the transfer pump is started, and degreasing agent is delivered into the second clamping locking tube 202 through the liquid passage pipe 205. The degreasing agent enters the pipe, flushes the pipe, and then discharges through the first clamping locking tube 201 and the liquid passage pipe 205, with the discharged liquid falling into the receiving container. The degreasing agent is an alkaline water-based degreasing agent, whose main components are 5-10 wt% sodium hydroxide, 3-5 wt% sodium carbonate, and 2-3 wt% nonionic surfactant, with a pH value of 10-12.

[0041] Then, pure water is pumped into the second clamping pipe 202 to rinse the pipe.

[0042] like Figures 8-10 As shown, the internal degreasing mechanism 200 also includes a moving rod 211. A brush 212 is installed in the middle of the moving rod 211, and metal nylon blocks 213 are installed at both ends of the moving rod 211. The brush 212 is a spirally distributed circular brush, and the outer diameter of the brush 212 is 2mm larger than the inner diameter of the pipe. The brush 212 is placed inside the clamping lock, enabling bidirectional cleaning of the pipe. The proximity switch 204 on the clamping lock determines whether the moving rod 211 has moved to the end of the pipe by sensing the position of the metal nylon blocks 213 at both ends of the moving rod 211. Under the action of liquid or gas, the brush 212 can move forward spirally, and the gaps between the brushes 212 can allow cleaning fluid to pass through, which helps to improve the cleaning effect of brushing the inner wall of the pipe.

[0043] Specifically, when the brush 212 approaches the first clamping tube 201, by connecting the infusion pipe of the external delivery pump to the infusion pipe 205 on the first clamping tube 201, degreasing agent is delivered into the first clamping tube 201. The degreasing agent pushes the brush 212 to move forward in a spiral motion. As the brush 212 moves, it cleans the inner wall of the tube. When the brush 212 moves into the second clamping tube 202, by connecting the infusion pipe of the delivery pump to the second clamping tube 202... The liquid-passing pipe 205 on 02 is connected, and degreasing agent is delivered into the second clamping locking pipe 202. The degreasing agent pushes the brush 212 to move closer to the first clamping locking pipe 201 and cleans the inner wall of the pipe. This process is repeated ten times. Then, the liquid delivered by the delivery pump is replaced with pure water to rinse the inner wall of the pipe. Finally, the air outlet pipe of the external fan is connected to any liquid-passing pipe 205, and the air blown by the fan dries the inside of the pipe.

[0044] The degreasing agent has specific requirements for process temperature and cleaning flow rate. The temperature control range is 40-60℃, and the flow rate of the cleaning fluid within the pipe must be greater than 1.7 m³ / h. The pressure of the gas input from the blower to the inlet pipe 122 is 0.4-0.6 MPa, ensuring that the cleaning sponge 125 moves at a speed of 0.8-1.2 m / s along the inner wall of the pipe.

[0045] like Figure 11 As shown, the adjustment mechanism 300 includes a fixed frame 301 and a sliding frame 303. The fixed frame 301 has a sliding groove 302, and the sliding frame 303 is slidably connected to the fixed frame 301 via the sliding groove 302. A tank drag chain 304 is mounted on the fixed frame 301 and connected to the sliding frame 303. A connecting rod 305 is mounted on the sliding frame 303, and a sliding connecting plate 306 slides on the connecting rod 305. The connecting plate 306 is fixedly connected to the second clamping locking tube 202. The tank drag chain 304 drives the sliding frame 303 to slide along the sliding groove 302, thereby causing the second clamping locking tube 202 to translate, thus adjusting the distance between it and the first clamping locking tube 201.

[0046] Specifically, the position of the sliding frame 303 can be adjusted by the tank drag chain 304, and then the position of the second clamping locking tube 202 can be adjusted by the connecting rod 305 and the connecting plate 306, thereby adjusting the distance between the first clamping locking tube 201 and the second clamping locking tube 202, so that the first clamping locking tube 201 and the second clamping locking tube 202 can be adapted to tubes of different lengths.

[0047] like Figures 12-14 As shown, the external degreasing mechanism 400 includes a cleaning tank 410, two sets of pipe clamping assemblies 420, two speed sensors 430, multiple sets of double-brush cleaning roller assemblies 440, and multiple sets of rinsing assemblies 450.

[0048] The cleaning tank 410 includes two degreasing cleaning tanks 411 and one pure water cleaning tank 412. Multiple drain pipes 413 are installed at the bottom of the cleaning tank 410. The degreasing cleaning tank 411 and the pure water cleaning tank 412 are integrated partitions. The pipe clamping assembly 420 is used to transport the pipe. Two sets of pipe clamping assemblies 420 are located on both sides of the cleaning tank 410. The speed sensor 430 is used to monitor the movement and transport of the pipe, so as to facilitate the adjustment of the pipe clamping assembly 420 to transport the pipe as needed.

[0049] The dual-brush cleaning roller brush assembly 440 includes two second motors 441. The second motors 441 are mounted on the outer surface of the cleaning tank 410. The power output shaft of the second motors 441 extends into the cleaning tank 410 and is rotatably connected to the cleaning tank 410. Roller brushes 442 are mounted on the power output shaft of the second motors 441. The two roller brushes 442 in the dual-brush cleaning roller brush assembly 440 are located on both sides of the pipe.

[0050] The rinsing assembly 450 includes a hollow tube 451 and a delivery tube 452. The delivery tube 452 passes through the cleaning tank 410 and is fixedly connected to the cleaning tank 410. The hollow tube 451 is fixedly connected to the delivery tube 452, and the hollow tube 451 and the delivery tube 452 are internally connected. Multiple water spray holes are opened on the inner wall of the hollow tube 451. The hollow tube 451 is arranged laterally inside the cleaning tank 410 and is connected to the delivery tube 452 to ensure that the cleaning fluid can be accurately delivered to the water spray holes of the hollow tube 451.

[0051] Specifically, firstly, an external delivery pump is connected to multiple delivery pipes 452, and then two oblique nylon plugs are used to seal both ends of the pipes to prevent cleaning fluid from entering the pipes. Then, the pipes are transported using two sets of pipe clamping assemblies 420, passing through the cleaning tank 410 and between multiple sets of dual-brush cleaning roller assemblies 440 and multiple hollow pipes 451. By starting the delivery pump, cleaning fluid is delivered into the multiple delivery pipes 452. The cleaning fluid enters the hollow pipes 451 and is then sprayed out through the spray holes on the hollow pipes 451, rinsing the outer wall of the pipes.

[0052] Simultaneously, by activating multiple second motors 441, multiple roller brushes 442 are driven to rotate, causing the roller brushes 442 to scrub the outer surface of the pipe. By employing dual-brush cleaning roller brushes 442, the contact area between the brushes 212 and the pipe can be greatly increased, resulting in more efficient cleaning of the outer surface of the pipe, high cleaning efficiency, and a cleaner finish.

[0053] like Figures 15-18As shown, the pipe clamping assembly 420 includes a hollow box 421, a support leg 422, two sets of clamping components 423, and a drive component 424. The support leg 422 is mounted on the bottom surface of the hollow box 421. Both sets of clamping components 423 are rotatably connected to the hollow box 421. The drive component 424 is mounted on the bottom surface of the hollow box 421 and is used to drive the two sets of clamping components 423 to rotate, so that the two sets of clamping components 423 convey the pipe.

[0054] The clamping component 423 includes a rotating cylinder 4231, a piston chamber is provided at the top of the rotating cylinder 4231, a plurality of mounting slots 4235 are equally spaced on the rotating cylinder 4231, a plurality of guide slots 4236 are equally spaced on the rotating cylinder 4231, the number of guide slots 4236 is twice that of the mounting slots 4235, and a guide slot 4236 is provided above and below each mounting slot 4235.

[0055] Each mounting slot 4235 contains an airbag 4239, and the airbag 4239 is equipped with a vent pipe that connects to the inside of the piston chamber.

[0056] Multiple rubber blocks 4237 are slidably mounted on the rotating cylinder 4231. Slider blocks are mounted on the top and bottom surfaces of the rubber blocks 4237. Two sliders are slidably connected to two guide grooves 4236 respectively. Springs 4238 are mounted on both sliders.

[0057] A piston plate 4234 is slidably connected inside the piston chamber. An adjusting screw 4232 is rotatably mounted on the top surface of the piston plate 4234. The adjusting screw 4232 is threadedly connected to the rotating cylinder 4231. A turntable 4233 is mounted on the upper end of the adjusting screw 4232.

[0058] Specifically, by passing the pipe to be transported between the two rotating cylinders 4231, the rubber block 4237 on the rotating cylinder 4231 will come into contact with the pipe. By rotating the two rotating cylinders 4231, the pipe can be moved by the rubber block 4237.

[0059] When the outer diameter of the pipe to be transported changes, for example, when the outer diameter decreases compared to before, the rotating turntable 4233 drives the adjusting screw 4232 to rotate and move downward, thereby pushing the piston plate 4234 to move downward, and thus transporting the air in the piston chamber to multiple air bladders 4239, causing the multiple air bladders 4239 to expand. The expanded air bladders 4239 will push the rubber block 4237 to move away from the rotating cylinder 4231, so that the two sets of pipe clamping assemblies 420 can transport pipes with smaller outer diameters.

[0060] Conversely, when it is necessary to transport pipes with a larger outer diameter, rotating the turntable 4233 drives the adjusting screw 4232 to rotate and move upward, which in turn drives the piston plate 4234 to move upward, thereby allowing the air in the airbag 4239 to enter the piston chamber, causing the airbag 4239 to deflate and shrink. At this time, under the tension of the spring 4238, the spring 4238 will drive the rubber block 4237 to move closer to the rotating cylinder 4231, so that the two sets of pipe clamping assemblies 420 can transport pipes with a larger outer diameter.

[0061] like Figure 16 and Figure 17 As shown, the drive component 424 includes a first motor 4241, a drive gear 4242, a connecting column 4243, and two driven gears 4244. The first motor 4241 is mounted on the bottom surface of the hollow box 421. The power output shaft of the first motor 4241 extends into the hollow box 421 and is rotatably connected to the hollow box 421. Both connecting columns 4243 are rotatably connected to the hollow box 421, and the upper ends of the two connecting columns 4243 are fixedly connected to two rotating cylinders 4231 respectively. The drive gear 4242 and the two driven gears 4244 are all located inside the hollow box 421. The drive gear 4242 is fixedly connected to the power output shaft of the first motor 4241, and the two driven gears 4244 are fixedly connected to the two connecting columns 4243 respectively. Both driven gears 4244 are meshed with the drive gear 4242.

[0062] Specifically, by starting the first motor 4241, the power output shaft of the first motor 4241 drives the drive gear 4242 to rotate, which in turn meshes with and drives the two second gears to rotate, which in turn drives the two connecting columns 4243 to rotate, which in turn drives the two rotating cylinders 4231 to rotate, thereby causing the two rotating cylinders 4231 to move the pipe through the rubber block 4237.

[0063] like Figure 19 As shown, the felt plugging mechanism 500 includes a felt plug pneumatic clamp 501, a felt plug receiver 502, and a conveying track 503. The felt plug pneumatic clamp 501 and the felt plug receiver 502 are connected by a pipe and are located on the same conveying track 503. The felt plug pneumatic clamp 501 is used to check and confirm the cleanliness of the inner wall of the pipe using a clean felt plug and a white cloth.

[0064] Specifically, by placing the felt plug and white cloth at one end of the pipe connected to the felt plug pneumatic clamp 501, the felt plug pneumatic clamp 501 then supplies gas into the pipe, which pushes the felt plug and white cloth along the inner wall of the pipe, eventually causing the felt plug and white cloth to fall into the felt plug receiver 502. The color and dirt on the white cloth are then observed to determine whether the inner wall of the pipe is clean.

[0065] Working principle: In actual use, the outer wall scraper 110 is placed at the pipe rolling outlet end, so that the discharged pipe passes through the nylon guide sleeve 114. As the pipe is rolled and extended, the nylon guide sleeve 114 will scrape off the grease on the outer surface of the pipe.

[0066] Then, the pipe to be cleaned is clamped using the first pneumatic clamp 124 and the second pneumatic clamp 128. The sealing tube 127 is slid to stop blocking the sponge placement groove 126. The cleaning sponge 125 is placed in the first pneumatic clamp 124. The sealing tube 127 is slid to block the sponge placement groove 126.

[0067] Then open valve 123 to allow the external air supply equipment to send high-pressure gas into the first pneumatic clamp 124 through air nozzle 121. The high-pressure gas will move through the cleaning sponge 125, causing the cleaning sponge 125 to enter the pipe. Under the action of air pressure, the cleaning sponge 125 moves at high speed along the inner wall of the pipe and fully rubs the inner wall of the pipe to remove oil. The sponge collector 129 collects the oily sponge that has been transported.

[0068] The above steps can remove most of the grease from the inner and outer surfaces of the pipe.

[0069] Then, a liquid receiving container is placed below each of the two liquid inlet tubes 205. The brush 212 is placed at the inner end of the tube, and the first clamping locking tube 201 and the second clamping locking tube 202 are connected to both ends of the tube.

[0070] When the brush 212 approaches the first clamping locking tube 201, the delivery pipe of the external pump is connected to the liquid passage pipe 205 on the first clamping locking tube 201. By delivering degreasing agent into the first clamping locking tube 201, the degreasing agent will push the brush 212 to move forward in a spiral motion. As the brush 212 moves, it will clean the inner wall of the tube. When the brush 212 moves into the second clamping locking tube 202, the delivery pipe of the external pump is connected to the liquid passage pipe 205 on the second clamping locking tube 202. By delivering degreasing agent into the second clamping locking tube 202, the degreasing agent will push the brush 212 to move closer to the first clamping locking tube 201 and clean the inner wall of the tube. This process is repeated ten times. Then, the liquid delivered by the pump is changed to pure water to rinse the inner wall of the tube. Finally, the air outlet pipe of the external fan is connected to any of the liquid passage pipes 205, and the air blown by the fan will dry the inside of the tube. This process can remove grease from the inner wall of the pipe.

[0071] Then, the grease on the outer surface of the pipe is removed using an external degreasing mechanism 400. Specifically, an external delivery pump is connected to multiple delivery pipes 452, and two oblique nylon plugs are used to seal both ends of the pipe to prevent cleaning fluid from entering the pipe. Then, the pipe is transported by two sets of pipe clamping assemblies 420, passing through the cleaning tank 410 and between multiple sets of double-brush cleaning roller assemblies 440 and multiple hollow pipes 451. By starting the delivery pump, cleaning fluid is delivered into the multiple delivery pipes 452. The cleaning fluid enters the hollow pipes 451 and is then sprayed out through the spray holes on the hollow pipes 451, rinsing the outer wall of the pipe.

[0072] Simultaneously, by activating multiple second motors 441, multiple roller brushes 442 are driven to rotate, causing the roller brushes 442 to scrub the outer surface of the pipe. By employing dual-brush cleaning roller brushes 442, the contact area between the brushes 212 and the pipe can be greatly increased, resulting in more efficient cleaning of the outer surface of the pipe, high cleaning efficiency, and a cleaner finish.

[0073] When the outer diameter of the pipe 452 to be transported changes, or when the rubber block 4237 wears down, for example when the outer diameter of the pipe decreases compared to before, the turntable 4233 is rotated, which drives the adjusting screw 4232 to rotate and move downward, thereby pushing the piston plate 4234 to move downward, and thus transporting the air in the piston chamber to multiple air bladders 4239, causing the multiple air bladders 4239 to expand and become larger. The expanded air bladders 4239 will push the rubber block 4237 to move away from the rotating cylinder 4231, so that the two sets of pipe clamping assemblies 420 can transport pipes with smaller outer diameters.

[0074] Example 2: As Figures 1-19 As shown, the method of using the degreasing device for small-diameter seamless pipes includes the following steps: Step 1: Inject alkaline water-based degreasing agent into the degreasing cleaning tank 411 of the cleaning tank 410, and inject pure water into the pure water cleaning tank 412; then use a heating rod to adjust the temperature of the degreasing agent to 40-60℃; then connect the air inlet pipe 122 to the external air supply equipment, and connect the liquid inlet pipe 205 to the external delivery pump. Step 2: Pass one end of the newly rolled small-diameter seamless pipe through the nylon guide sleeve 114 of the outer wall oil scraper 110. As the pipe is rolled and extended, the nylon guide sleeve 114 simultaneously scrapes off the floating oil on the outer surface of the pipe. The scraped grease is collected in the oil scraper groove 113 and discharged from the oil drain pipe 115. Step 3: Clamp both ends of the pipe with the first pneumatic clamp 124 and the second pneumatic clamp 128, slide the sealing tube 127 to open the sponge placement groove 126, put in the cylindrical cleaning sponge 125, and then slide the sealing tube 127 to close the sponge placement groove 126; open the valve 123, and high-pressure gas enters the first pneumatic clamp 124 through the air nozzle 121, pushing the cleaning sponge 125 to move along the inside of the pipe. When the cleaning sponge 125 moves, it will rub and remove the floating oil on the inner wall. The oily cleaning sponge 125 is finally collected by the sponge collector 129. Step 4: Insert the moving rod 211 of the spiral distributed brush 212 into the pipe and place the liquid receiving container below the liquid passage pipe 205; start the delivery pump to deliver degreasing agent into the pipe, and the degreasing agent pushes the brush 212 to move spirally towards the second clamping locking pipe 202; when the proximity switch 204 senses the metal nylon block 213, connect the delivery pump's delivery pipe to another liquid passage pipe 205, and push the brush 212 to move in the opposite direction by delivering degreasing agent, repeating this process ten times; then switch to pure water delivery and repeat the reciprocating rinsing process three times; finally, use a fan to deliver air into the liquid passage pipe 205 to dry the residual liquid on the inner wall. Step 5: Seal both ends of the pipe with slanted nylon rubber plugs to prevent cleaning fluid from entering the inner wall. Place the pipe between the two sets of pipe clamping components 420. Rotate the turntable 4233 according to the outer diameter of the pipe to adjust the extension distance of the rubber block 4237 so that the rubber block 4237 fits against the outer wall of the pipe. Then, the first motor 4241 is started, which drives the rotating drum 4231 to rotate through the driving gear 4242 and the driven gear 4244, thereby conveying the pipe material so that the pipe material passes through the degreasing cleaning tank 411 and the pure water cleaning tank 412 in sequence. Then, the second motor 441 and the delivery pump connected to the rinsing assembly 450 are started. The roller brush 442 of the double brush cleaning roller brush assembly 440 brushes the outer wall of the pipe material, while the water spray hole of the hollow tube 451 sprays the corresponding cleaning liquid to complete the degreasing and rinsing of the outer wall. Step Six: Place the cleaned felt plug and white cloth at the discharge end of the felt plug pneumatic clamp 501, so that the felt plug pneumatic clamp 501 is connected to one end of the pipe and the felt plug receiver 502 is connected to the other end of the pipe; by introducing gas into the felt plug pneumatic clamp 501, the gas pushes the felt plug and white cloth to move along the inner wall of the pipe, and finally is collected by the felt plug receiver 502; observe whether there is any oil residue on the surface of the white cloth. If there is no visible oil, the cleaning is deemed qualified. If there is oil, return to Step Four to perform internal degreasing again.

[0075] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0076] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A degreasing device for small-diameter seamless pipes, characterized in that, The utility model relates to a pipe rolling oil scraping device, which comprises an oil scraping mechanism (100), an inner degreasing mechanism (200), an adjusting mechanism (300) and an outer degreasing mechanism (400). The oil scraping mechanism (100) comprises an outer wall oil scraper (110) and an inner wall oil scraper (120), the outer wall oil scraper (110) is located at the pipe rolling outlet end, the outer wall oil scraper (110) is used for pre-treating the floating oil on the outer surface of the pipe after cold working, and the inner wall oil scraper (120) is used for removing the floating oil on the inner wall of the pipe. The inner degreasing mechanism (200) is used for degreasing and cleaning the inner wall of the pipe after oil scraping pre-treatment. The adjusting mechanism (300) is used for adjusting the clamping distance of the inner degreasing mechanism (200). The outer degreasing mechanism (400) is used for deep degreasing of the outer wall of the pipe. The felt plug mechanism (500) detects the inner wall of the pipe after degreasing.

2. The small diameter seamless tube degreasing apparatus according to claim 1, wherein The outer wall oil scraper (110) comprises a first support frame (111) on which an oil scraping tank (112) is mounted, the oil scraping tank (112) is provided with an oil scraping groove (113) in the inside, and the bottom of the oil scraping tank (112) is provided with an oil discharge pipe (115). A plurality of nylon guide sleeves (114) are mounted in the oil scraping groove (113) and are in a conical structure. The inner wall oil scraper (120) comprises an air nozzle (121) having an air inlet pipe (122) connected to one end and a first pneumatic clamp (124) connected to the other end.

3. The small diameter seamless tube for debinding apparatus according to claim 1, characterized by The first pneumatic clamp (124) is provided with a sponge placing groove (126) for placing a cleaning sponge (125). A plugging pipe (127) is in sliding connection with the first pneumatic clamp (124) and is used for plugging the sponge placing groove (126). A second pneumatic clamp (128) is used for clamping and fixing the pipe in cooperation with the first pneumatic clamp (124), and the end away from the first pneumatic clamp (124) is connected with a sponge collector (129). The inner degreasing mechanism (200) comprises a first clamping lock pipe (201) and a second clamping lock pipe (202).

4. The small diameter seamless tube for debinding apparatus according to claim 1, characterized by The second clamping lock pipe (202) and the first clamping lock pipe (201) are both provided with a sealing rubber ring (203) and a proximity switch (204) and are both connected with a liquid passing pipe (205). A moving rod (211) is provided with a spiral distributed brush (212) in the middle part, and metal nylon blocks (213) are arranged at both ends. The adjusting mechanism (300) comprises a fixed frame (301) provided with a sliding groove (302), the sliding groove (302) is in sliding connection with a sliding frame (303), a tank drag chain (304) is mounted on the fixed frame (301) and is in fixed connection with the sliding frame (303), a connecting rod (305) is in sliding connection with the sliding frame (303) and is provided with a connecting plate (306), and the connecting plate (306) is in fixed connection with the second clamping lock pipe (202). The outer degreasing mechanism (400) comprises a cleaning tank (410) containing two degreasing and cleaning grooves (411) and a pure water cleaning groove (412), and two groups of pipe clamping and conveying assemblies (420) are arranged on both sides of the cleaning tank (410).

5. The small diameter seamless tube for debinding apparatus according to claim 4, wherein ​ ​ ​ ​ 6. The small diameter seamless tube for debinding apparatus according to claim 1, wherein ​ ​ ​ A plurality of double-brush cleaning roller brush assemblies (440) are arranged on the cleaning box (410), and each double-brush cleaning roller brush assembly (440) comprises two second motors (441) which are mounted on the outer surface of the cleaning box (410) and are rotationally connected with the cleaning box (410) through power output shafts, and a roller brush (442) is arranged on the power output shaft of each second motor (441); A plurality of flushing assemblies (450) are arranged on the cleaning box (410), and each flushing assembly (450) comprises a hollow pipe (451) and a conveying pipe (452), wherein the hollow pipe (451) is fixedly connected with the conveying pipe (452) and is in internal communication, and a plurality of water injection holes are arranged on the inner wall of the hollow pipe (451).

7. The small diameter seamless tube for debinding apparatus according to claim 6, wherein The pipe clamping assembly (420) comprises: a hollow box (421) provided with support legs (422) at the bottom; two clamping components (423) rotationally connected with the top surface of the hollow box (421), each comprising: a rotating cylinder (4231) provided with a plurality of mounting grooves (4235) and a plurality of guide grooves (4236) and a piston cavity at the top; a plurality of air bags (4239) respectively arranged in the mounting grooves (4235) and in communication with the piston cavity; a plurality of rubber blocks (4237) slidably connected with the guide grooves (4236) through sliding blocks, and the sliding blocks are provided with springs (4238); a piston sheet (4234) slidably arranged in the piston cavity, a top portion of the piston sheet (4234) being rotationally connected with an adjusting screw (4232), the adjusting screw (4232) being threadedly connected with the rotating cylinder (4231), and a top end of the adjusting screw (4232) being provided with a rotating disc (4233); a driving component (424) for driving the two clamping components (423) to synchronously rotate.

8. The small diameter seamless tube for debinding apparatus according to claim 7, wherein The driving component (424) comprises: a first motor (4241) mounted on the bottom surface of the hollow box (421) and provided with a driving gear (4242) on the power output shaft; two driven gears (4244) in engagement with the driving gear (4242) and fixedly connected with the two rotating cylinders (4231) through connecting columns (4243).

9. The small diameter seamless tube de-bonder according to claim 1, wherein The felt plug mechanism (500) comprises: a felt plug pneumatic clamp (501); a felt plug receiver (502) connected with the felt plug pneumatic clamp (501) through a pipe, and the felt plug receiver (502) and the felt plug pneumatic clamp (501) are located on the same conveying track (503).

10. The method of using a small diameter seamless tube de-bonder according to any one of claims 1-9, wherein, The method comprises the following steps: Step 1: After the small-diameter seamless pipe is rolled, one end of the pipe is inserted into a nylon guide sleeve (114) of an outer wall oil scraper (110) and extends along with the pipe, and the nylon guide sleeve (114) simultaneously scrapes off the floating oil on the outer surface of the pipe; Step two, clamp the two ends of the pipe by the first pneumatic clamp (124) and the second pneumatic clamp (128), open the sponge placing slot (126) by sliding the blocking pipe (127), put in the cylindrical cleaning sponge (125), and then slide the blocking pipe (127) to close the sponge placing slot (126); open the valve (123), make the gas enter the first pneumatic clamp (124) through the air nozzle (121), and then push the cleaning sponge (125) to move along the pipe, and the cleaning sponge (125) will rub off the floating oil on the inner wall when moving; Step three, put the moving rod (211) equipped with the spiral distributed brush (212) into the pipe, and place the liquid receiving container below the liquid passage pipe (205); start the delivery pump to deliver the degreasing agent into the pipe, and the degreasing agent pushes the brush (212) to move spirally towards the second clamping pipe (202); when the proximity switch (204) senses the metal nylon block (213), connect the liquid delivery pipe of the delivery pump with another liquid passage pipe (205), push the brush (212) to move reversely by delivering the degreasing agent, and repeat the process for ten times; then switch to pure water delivery, repeat the reciprocating flushing process for three times, and finally deliver air into the liquid passage pipe (205) through the air blower to dry the residual liquid on the inner wall; Step four, place the pipe between the two groups of pipe clamping and conveying assemblies (420), adjust the extension distance of the rubber block (4237) to make the rubber block (4237) adhere to the outer wall of the pipe, start the first motor (4241), drive the rotating cylinder (4231) to rotate through the driving gear (4242) and the driven gear (4244), and then convey the pipe (452) to make the pipe pass through the degreasing cleaning tank (411) and the pure water cleaning tank (412) in turn, pass through the multiple groups of double-brush cleaning brush assembly (440) and multiple groups of flushing assembly (450), and brush and clean the outer wall of the pipe; Step five, push the felt pad and white cloth along the inner wall of the pipe by inputting gas into the felt pad pneumatic clamp (501), and finally recycle by the felt pad receiver (502); observe whether there is oil stain on the surface of the white cloth, and if there is no visible oil stain, it is determined that the cleaning is qualified.

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