High-speed reciprocating brush cleaning method for inner wall of pipe

Abstract

The invention relates to a high-speed reciprocating brush cleaning method for the inner wall of a pipe, which comprises a flexible shaft with a brush, a flexible shaft reciprocating conveying device and a pipe fitting length measuring device, and comprises the following steps: the pipe fitting length measuring device measures the length of a pipe fitting and transmits pipe length data to the flexible shaft reciprocating conveying device; the pipe length data and the set length are used as stroke data, and the initial position of the flexible shaft is recorded; the pipe fitting is fixed, and the pipe end is aligned with the brush of the flexible shaft; lubricating cleaning liquid is continuously introduced into the pipe fitting, a flexible shaft reciprocating conveying device is started, and a flexible shaft and a brush are driven to axially brush the pipe fitting in a high-speed reciprocating mode according to set stroke data; before the axial scrubbing is finished, stopping introducing the lubricating cleaning fluid, continuously controlling the brush to reciprocate for 1-5 times, and discharging the lubricating cleaning fluid; and the pipe fitting is taken down, and cleaning operation is completed. According to the method, the brush is driven by the flexible shaft to conduct high-speed brushing and matched with the cleaning liquid, the pipe fitting cleaning efficiency and effect are improved, meanwhile, liquid drainage is achieved through the brush, equipment steps are simplified, and operation is convenient and fast.

Description

Technical Field

[0001] The invention relates to the field of pipe cleaning, and is a method for cleaning the inner wall of a pipe with a high-speed reciprocating brush. Background Art

[0002] The existing methods for cleaning the inner wall of pipes include cleaning with cleaning fluid, high-pressure blowing, ball liquid cleaning, abrasive cleaning, brush cleaning, etc. Among them, brush cleaning is a relatively common cleaning method in the existing pipe cleaning field. For example, the authorization announcement number CN218210972U published in the Chinese patent literature, the authorization announcement date is January 3, 2023, and the utility model name is "A water-cooled refrigerator condenser copper tube cleaning equipment", which discloses a scheme that uses a motor to drive a flexible shaft, and the flexible shaft drives a brush to move and clean inside the copper tube. The advantage of brush cleaning is that the structure is simple, but the disadvantage is that brush cleaning is often limited by the length of the pipe. When the pipe to be cleaned is long, the structure of the brush relying on the flexible shaft to transport and rotate is relatively complicated, and the characteristics of the flexible shaft itself also determine that it is difficult to achieve a large torque output. Therefore, it is difficult to achieve high-speed stability requirements when the brush rotates with the flexible shaft, resulting in poor cleaning effect when the inner wall of the actual long pipe is cleaned, and the overall cleaning efficiency is not high. In addition, when the existing brush is used for cleaning, a cleaning liquid supply pipe is often provided along the direction of the flexible shaft, so that the cleaning and liquid supply can be realized at the same time to ensure the cleaning effect. However, after the cleaning is completed, a large amount of cleaning liquid is often left in the pipe fitting, and it is necessary to connect external blowing equipment to realize the emptying operation of the inner wall of the pipe, which is relatively cumbersome. Therefore, it is necessary to improve the existing cleaning solution for the inner wall of long pipe fittings. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a high-speed reciprocating brush cleaning method for the inner wall of a pipe to the art, so as to solve the technical problems that the existing similar brush cleaning methods for the inner wall of a pipe are relatively complex in structure, the equipment cost is high, it is difficult to be applied to the cleaning of long pipes, the cleaning efficiency is low, the effect is poor, and the steps are complicated. The purpose is achieved through the following technical solutions.

[0004] A high-speed reciprocating brush cleaning method for the inner wall of a pipe, the equipment of the cleaning method comprises a flexible shaft with a brush at the end, a flexible shaft reciprocating conveying device, and a pipe length measuring device, and the cleaning method comprises the following steps: Step 1: the pipe length measuring device measures the pipe to be cleaned, and transmits the pipe length data to the flexible shaft reciprocating conveying device. The flexible shaft reciprocating conveying device adds the pipe length data to the set length as the stroke data of the flexible shaft reciprocating conveying, and records the current initial position of the flexible shaft. Step 2: fix the pipe to be cleaned and place the pipe end of the pipe horizontally opposite to the brush at the end of the flexible shaft; Step 3, continuously introducing lubricating cleaning fluid into the pipe; Step 4, turning on the flexible shaft reciprocating conveying device, which drives the flexible shaft and the brush to reciprocate and axially brush in the pipe according to the set stroke data, and the axial brushing speed is 1 to 10 m / s; Step 5: Before the axial brushing is finished, stop introducing the lubricating cleaning liquid into the pipe fitting, and continue to control the brush to axially brush for 1 to 5 reciprocating times, so that the brush discharges the remaining cleaning liquid in the pipe fitting, thereby performing a drainage operation on the pipe fitting; Step 6: After the drainage is completed, the flexible shaft reciprocating conveying device drives the flexible shaft and the brush to reset, and the pipe fittings are removed to complete the cleaning operation.

[0005] Through the above method, the flexible shaft drives the brush to axially scrub the pipe fitting, and at the same time, the lubricating cleaning liquid is introduced, which is easy to achieve high-speed scrubbing, thereby improving the cleaning efficiency and cleaning effect. In addition, with the high-speed axial scrubbing of the brush, when the introduction of the cleaning liquid is stopped, the brush can be used to drain the pipe fitting, eliminating the need for additional drainage equipment in the pipe, simplifying the overall solution steps, and making the operation more convenient.

[0006] The device includes a brush cylinder, wherein the flexible shaft slides into the interior from one end of the brush cylinder and is fixedly connected to the brush, a pipe joint sealably connected to the pipe fitting is provided at the other end of the brush cylinder, a liquid inlet and an overflow pipe arranged upward are provided on the circumferential surface of the brush cylinder, and the pipe end of the overflow pipe is open. When the brush cylinder is sealably connected to the pipe fitting through the pipe joint, lubricating cleaning liquid is continuously introduced into the liquid inlet of the brush cylinder; when the flexible shaft drives the brush to slide toward the end of the pipe fitting, the continuously introduced cleaning liquid flows out along the end of the pipe fitting, and the overflow pipe of the brush cylinder is in a non-discharge state; when the flexible shaft drives the brush to slide toward the end of the brush cylinder to reset, the lubricating cleaning liquid is discharged from the overflow pipe. Through this scheme structure, it is convenient to introduce lubricating cleaning liquid into the pipe fitting while the brush is cleaning, so that the brush has a better cleaning effect inside the pipe fitting, reduces the wear and tear of the brush and the inner wall of the pipe, and prolongs the service life; and through the overflow pipe set upward, the internal pressure formed in the pipe fitting by the high-speed reciprocating motion of the brush can be effectively alleviated, and the lubricating cleaning liquid introduced into the pipe fitting can be relieved and compensated, ensuring that there is enough lubricating cleaning liquid in the pipe fitting, thereby ensuring the cleaning effect, and at the same time, it can also effectively reduce the resistance of the brush to reciprocate in the pipe, which is conducive to ensuring the stability of the high-speed operation of the flexible shaft and prolonging its service life. In addition, the overflow pipe is set so that the liquid inlet of the brush barrel does not need to provide a large flow of continuous liquid supply, which effectively saves equipment energy consumption and cleaning liquid costs.

[0007] One end of the brush cylinder is provided with a proximity switch for detecting that the brush is reset to the position in the brush cylinder. When the proximity switch is triggered, the proximity switch sends a signal to the flexible shaft reciprocating conveying device, and the flexible shaft reciprocating conveying device recognizes the current flexible shaft state as the initial position of the reciprocating. Through this structure, the stroke control of the flexible shaft reciprocating conveying device is more accurate and reliable, the position deviation between the flexible shaft reciprocating conveying device and the flexible shaft due to friction loss is reduced, and the accuracy of the flexible shaft working stroke is improved.

[0008] The lubricating cleaning liquid is a sodium hydroxide solution and / or a potassium hydroxide solution. This solution can lubricate the brush and the flexible shaft on the one hand, and prevent the brush and the inner wall of the tube from being contaminated by secondary adhesion after cleaning, and has a better cleaning effect.

[0009] The flexible shaft reciprocating conveying device controls the working state of the flexible shaft to be: the linear speed of the flexible shaft entering the pipe is 1-10 m / s, the speed is reduced to 0-1 m / s when leaving the pipe opening of the pipe, and the deceleration stroke length is set to 50-200 mm. Through this solution, the working stability of the flexible shaft is ensured and the service life of the equipment is extended.

[0010] The flexible shaft reciprocating conveying device comprises a servo motor and a clamping wheel. The servo motor drives the clamping wheel to rotate, and the clamping wheel clamps the flexible shaft and drives the flexible shaft to move axially.

[0011] The present invention mainly relies on the high-speed axial brushing of the brush on the inner wall of the pipe to achieve effective cleaning of the inner wall of the pipe. The axial brushing has higher efficiency and better cleaning effect. It is suitable for use as a method for cleaning the inner wall of the pipe, or an improvement of similar cleaning methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a principle structural diagram of the present invention.

[0013] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the brush tube.

[0014] The serial numbers and names in the figure are: 1. flexible shaft reciprocating conveying device, 101. servo motor, 102. clamping wheel, 2. flexible shaft, 3. brush, 4. brush cylinder, 401. pipe joint, 402. liquid inlet, 403. overflow pipe, 404. proximity switch, 5. pipe fitting, 6. pipe fitting length measuring device, 601. limit end, 602. measuring end. Implementation

[0015] The present invention will now be further described with reference to the accompanying drawings.

[0016] like Figure 1 , Figure 2As shown, the equipment of the high-speed reciprocating brush cleaning method for the inner wall of the pipe includes a flexible shaft 2 with a brush 3 at the end, a flexible shaft reciprocating conveying device 1, a brush cylinder 4, and a pipe length measuring device 6. The flexible shaft reciprocating conveying device includes a servo motor 101 and a clamping wheel 102. The servo motor drives the clamping wheel to rotate, and the clamping wheel clamps the flexible shaft and drives the flexible shaft to move axially. The flexible shaft slides into the interior from one end of the brush cylinder and is fixedly connected to the brush. The other end of the brush cylinder is provided with a pipe joint 401 that is sealed and connected to the pipe. The peripheral surface of the brush cylinder is provided with a liquid inlet 402 and an overflow pipe 403 arranged upward, and the pipe end of the overflow pipe is open. The pipe length measuring device includes a horizontal bracket, one end of the bracket is provided with a limit end 601 for limiting the position of the pipe, and the other end is provided with a measuring end 602 that is slidably adjusted relative to the bracket. The measuring end is provided with a measuring sensor, and the measuring sensor forms a control connection with the flexible shaft reciprocating conveying device. The cleaning method includes the following steps: Step 1: The pipe length measuring device 6 measures the pipe 5 to be cleaned and transmits the pipe length data to the flexible shaft reciprocating conveying device 1. The flexible shaft reciprocating conveying device adds the pipe length data to the set length as the stroke data of the flexible shaft reciprocating conveying and records the current initial position of the flexible shaft.

[0017] Step 2: fix the pipe to be cleaned, and seal the pipe opening at the end of the pipe with the pipe joint 401 at the end of the brush tube 4.

[0018] Step three: continuously introduce lubricating cleaning liquid into the liquid inlet 401 of the brush cylinder, wherein the lubricating cleaning liquid is sodium hydroxide solution and / or potassium hydroxide solution.

[0019] Step 4, start the flexible shaft reciprocating conveying device 1, and the flexible shaft reciprocating conveying device drives the flexible shaft 2 and the brush 3 to reciprocate and axially brush in the pipe 5 according to the set stroke data. The working state of the flexible shaft brushing is: the linear speed entering the pipe is 1-10m / s, and the deceleration is 0-1m / s when leaving the pipe mouth of the pipe, and the deceleration stroke length is set to 50-200mm. When the flexible shaft drives the brush to slide toward the end of the pipe, the continuously introduced lubricating cleaning liquid flows out along the end of the pipe, and the overflow pipe of the brush tube is in a non-discharge state; when the flexible shaft drives the brush to reset and slide toward the end of the brush tube, the lubricating cleaning liquid is discharged from the overflow pipe.

[0020] Step 5, before the axial brushing is completed, stop introducing the lubricating cleaning liquid into the brush tube 4, and continue to control the flexible shaft 2 to axially brush 1 to 5 reciprocating times, and the brush discharges the remaining cleaning liquid in the pipe 5, thereby performing a drainage operation on the pipe.

[0021] Step 6: After the drainage is completed, the flexible shaft reciprocating conveying device drives the flexible shaft and the brush to reset, and the pipe fittings are removed to complete the cleaning operation.

[0022] Furthermore, a proximity switch 404 is provided at one end of the brush cylinder 4 for detecting whether the brush 3 is reset into place in the brush cylinder. When the reset of the brush triggers the proximity switch, the proximity switch sends a signal to the flexible shaft reciprocating conveying device 1, and the flexible shaft reciprocating conveying device recognizes the current flexible shaft state as the initial position of the reciprocation, which is conducive to more accurate control of the working stroke of the brush.

[0023] The above contents are intended to illustrate the technical means of the present invention, but not to limit the technical scope of the present invention. Those skilled in the art may make obvious improvements or substitutions to the present invention in combination with existing common knowledge, which also fall within the protection scope of the claims of the present invention.

Claims

1. A high-speed reciprocating brush cleaning method for the inner wall of a pipe, the cleaning method comprising a flexible shaft (2) with a brush (3) at the end, a flexible shaft reciprocating conveying device (1), and a pipe length measuring device (6), characterized in that The cleaning method comprises the following steps: Step 1: the pipe length measuring device (6) measures the length of the pipe (5) to be cleaned, and transmits the pipe length data to the flexible shaft reciprocating conveying device (1); the flexible shaft reciprocating conveying device adds a set length to the pipe length data as the stroke data of the flexible shaft reciprocating conveying, and records the current initial position of the flexible shaft (2); Step 2: fix the pipe to be cleaned and place the pipe opening at the end of the pipe horizontally opposite to the brush (3) at the end of the flexible shaft; Step 3, continuously introducing lubricating cleaning fluid into the pipe; Step 4, turning on the flexible shaft reciprocating conveying device, the flexible shaft reciprocating conveying device drives the flexible shaft and the brush to reciprocate axially in the pipe fitting according to the set stroke data, and the axial brushing speed is 1 to 10 m / s; Step 5: Before the axial brushing is finished, stop introducing the lubricating cleaning liquid into the pipe fitting, and continue to control the brush to axially brush for 1 to 5 reciprocating times, so that the brush discharges the remaining cleaning liquid in the pipe fitting, thereby performing a liquid discharge operation on the pipe fitting; Step 6: After the drainage is completed, the flexible shaft reciprocating conveying device drives the flexible shaft and the brush to reset, and the pipe fittings are removed to complete the cleaning operation.

2. The high-speed reciprocating brush cleaning method for the inner wall of a pipe according to claim 1, characterized in that The device comprises a brush cylinder (4), wherein the flexible shaft (2) slides into the interior of the brush cylinder from one end and is fixedly connected to the brush (3), and the other end of the brush cylinder is provided with a pipe joint (401) which is sealed with the pipe fitting (5), and the peripheral surface of the brush cylinder is provided with a liquid inlet (402) and an overflow pipe (403) arranged upward, and the pipe end of the overflow pipe is open. When the brush cylinder is sealed with the pipe fitting through the pipe joint, lubricating cleaning liquid is continuously introduced into the liquid inlet of the brush cylinder; when the flexible shaft drives the brush to slide toward the end of the pipe fitting, the continuously introduced cleaning liquid flows out along the end of the pipe fitting, and the overflow pipe of the brush cylinder is in a non-discharging state; when the flexible shaft drives the brush to return and slide toward the end of the brush cylinder, the lubricating cleaning liquid is discharged from the overflow pipe.

3. The high-speed reciprocating brush cleaning method for the inner wall of a pipe according to claim 2, characterized in that A proximity switch (404) for detecting whether the brush (3) is reset into position in the brush cylinder is provided at one end of the brush cylinder (4); when the proximity switch is triggered, the proximity switch sends a signal to the flexible shaft reciprocating conveying device (1), and the flexible shaft reciprocating conveying device recognizes the current flexible shaft state as the initial reciprocating position.

4. The high-speed reciprocating brush cleaning method for the inner wall of a pipe according to claim 1, characterized in that The lubricating cleaning fluid is a sodium hydroxide solution and / or a potassium hydroxide solution.

5. The high-speed reciprocating brush cleaning method for the inner wall of a pipe according to claim 1, characterized in that The flexible shaft reciprocating conveying device (1) controls the working state of the flexible shaft (2) to be: the linear speed when entering the pipe fitting (5) is 1 to 10 m / s, and the speed is reduced to 0 to 1 m / s when leaving the pipe fitting. The deceleration stroke length is set to 50 to 200 mm.

6. The high-speed reciprocating brush cleaning method for the inner wall of a pipe according to claim 1, characterized in that The flexible shaft reciprocating conveying device (1) comprises a servo motor (101) and a clamping wheel (102); the servo motor drives the clamping wheel to rotate, and the clamping wheel clamps the flexible shaft and drives the flexible shaft to move axially.

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