High-pressure water cleaning device and cleaning method for inner wall of cylinder

Abstract

The present invention relates to a high-pressure water cleaning device and cleaning method for the inner wall of a cylinder, comprising a support base, a clean water tank, a raw liquid tank, a mixed liquid tank and a high-pressure water pump group installed on the top of the support base, the high-pressure water pump group pressurizes the liquid in the clean water tank and the mixed liquid tank, and sprays the liquid onto the inner wall of the cylinder through a nozzle, a balance seat is also installed on the top of the support base, the balance seat supports the end of the nozzle, the other end of the nozzle is connected to the balance seat by a wire rope, and a plurality of logistics tracks are also installed on the top of the support base, and a logistics vehicle is installed on the logistics track. By setting a reasonably arranged high-pressure water cleaning device, the cleaning of the inner wall of the cylinder can be automatically completed, the operation is convenient and reasonable, and the degree of automation is high, thereby reducing the intensity and difficulty of manual labor and improving the cleaning efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of storage tank production equipment, in particular to a high-pressure water cleaning device for the inner wall of a cylinder. Background Art

[0002] In the production of large storage tanks, prior to the final welding process, the container requires internal cleaning to remove impurities and oil stains from the cylinder to meet cleanliness requirements. Traditionally, this cleaning process is done manually. First, a pickling solution is applied to the inside of the cylinder. After a period of time, the pickling solution and the oil stains on the inner wall of the cylinder are allowed to fully react. Then, a high-pressure water jet is used to clean the inner wall of the container to achieve the required cleanliness.

[0003] Manual cleaning methods are difficult to ensure the stability and consistency of the drum cleaning quality. During the cleaning process, the operator needs to enter the confined space many times to work. The operation is complicated and difficult, the working time is long and the workload is heavy. In addition, the pickling fluid can easily cause harm to the operator and pollute the environment. Summary of the Invention

[0004] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a high-pressure water cleaning device and a cleaning method for the inner wall of the cylinder. By setting up a reasonably arranged high-pressure water cleaning device, the cleaning of the inner wall of the cylinder can be automatically completed. The operation is convenient and reasonable, and the degree of automation is high, thereby reducing the intensity and difficulty of manual labor and improving the cleaning efficiency. At the same time, by providing a reasonable cleaning method, the stability and consistency of the cylinder cleaning quality can be guaranteed, thereby improving the cleaning quality.

[0005] The technical solutions adopted in the present invention are as follows:

[0006] A high-pressure water cleaning device for the inner wall of a cylinder comprises a support base, a clean water tank is mounted on the top of the support base, a heater is provided on the top of the clean water tank, an inlet end of the clean water tank is connected to an external water source via a first electrically controlled valve, the clean water tank is connected to a mixed liquid tank via a first connecting pipe group, a ball valve is provided on the first connecting pipe group, the clean water tank is connected to a water inlet of a high-pressure water pump group via a second connecting pipe group, the water outlet of the high-pressure water pump group is connected to a nozzle via a spray pipe, the high-pressure water pump group pressurizes the clean water in the clean water tank and sprays it onto the inner wall of the cylinder through the nozzle;

[0007] The feed end of the mixed liquid tank is provided with a dosing pump, which transports the raw liquid in the raw liquid tank to the mixed liquid tank. A stirring pump is provided on the top of the mixed liquid tank. The output end of the stirring pump is connected to the stirrer. The stirring pump drives the stirrer to stir the mixed liquid in the mixed liquid tank evenly. The discharge end of the mixed liquid tank is connected to the water inlet of the high-pressure water pump group through the second connecting pipe group. The high-pressure water pump group pressurizes the mixed liquid in the mixed liquid tank and sprays it onto the inner wall of the cylinder through the nozzle;

[0008] A balance seat is installed on the top of the support base, and the balance seat supports the end of the nozzle, and the other end of the nozzle is connected to the balance seat through a steel wire rope;

[0009] A plurality of logistics tracks are also installed on the top of the support base. The logistics tracks are arranged parallel to the nozzles. A logistics vehicle is installed on the logistics track. The logistics vehicle is provided with a support wheel drive motor and a pulley drive motor. The support wheel drive motor drives the cylinder on the logistics vehicle to rotate, and the pulley drive motor drives the logistics vehicle to perform reciprocating linear motion along the logistics track.

[0010] A control system is installed on the support base, and a plurality of second electrically controlled valves are provided on the second connecting pipe group.

[0011] As a further improvement of the above technical solution:

[0012] The nozzle is provided with gears inside, and multiple water spray ports are evenly arranged on the side wall of the nozzle. The high-pressure water flow sprayed by the high-pressure water pump group drives the gears inside the nozzle to rotate and is sprayed out through the water spray ports on the side wall of the nozzle.

[0013] The clean water tank, the raw liquid tank and the mixed liquid tank are all provided with a visual liquid level gauge and a liquid level switch.

[0014] The structure of the logistics vehicle is as follows: it includes a first seat, a pulley drive motor is symmetrically installed at the bottom of the first seat, the output end of each pulley drive motor is connected to the active pulley, the active pulley is installed in cooperation with the logistics track, a plurality of auxiliary pulleys are also installed in cooperation with the bottom of the first seat, a support wheel drive motor is symmetrically installed on the top of the first seat, the output end of each support wheel drive motor is connected to the active support wheel, the first seat is connected to the second seat through a connecting shaft, a plurality of auxiliary pulleys are installed in cooperation with the bottom of the second seat, and an auxiliary support wheel that cooperates with the active support wheel is installed on the top of the second seat;

[0015] The pulley drive motor drives the first and second seats to perform reciprocating linear motion along the logistics track through the active pulley and the auxiliary pulley, and the support wheel drive motor drives the cylinder to perform rotational motion around the axis through the active support wheel and the auxiliary support wheel.

[0016] A water guide trough and a water collecting pool are provided on the support base. A cleaning liquid recovery mechanism is installed on the water collecting pool. The feed end of the cleaning liquid recovery mechanism is connected to the water collecting pool, and the discharge end of the cleaning liquid recovery mechanism is connected to the feed end of the mixed liquid box.

[0017] The structure of the cleaning liquid recovery mechanism is as follows: it includes a recovery water pump, the water inlet of the recovery water pump is connected to the water collection tank, the water outlet of the recovery water pump is connected to the feed end of the mixed liquid tank, and a backwash filter and an oil-water separator are arranged between the recovery water pump and the mixed liquid tank.

[0018] The nozzle is provided with a blowing mechanism, and the structure of the blowing mechanism is: it includes a cylinder fixedly installed on the nozzle, the output end of the cylinder is installed in conjunction with the gas nozzle through a nozzle mounting plate, the gas nozzle is connected to an external air source, and the air inlet of the gas nozzle is provided with an air filter and an air heater.

[0019] Limiting blocks are installed at both ends of a single logistics track.

[0020] A cleaning method using the above-mentioned high-pressure water cleaning device for the inner wall of the cylinder comprises the following steps:

[0021] S1. Prepare for cleaning by heating the clean water in the clean water tank to the target temperature using a heater. Open the ball valve to transfer the clean water from the clean water tank into the mixed liquid tank. Place the cylinder on the logistics vehicle.

[0022] S2. Start the pulley drive motor, so that the logistics vehicle drives the cylinder to move forward in a straight line toward the direction close to the nozzle, and start the support wheel drive motor to rotate the cylinder;

[0023] S3 pre-cleaning, when the closing ring weld position on the cylinder is aligned with the nozzle, the high-pressure water pump group 5 pressurizes the high-temperature water in the water tank and sprays the high-temperature and high-pressure water onto the inner wall of the cylinder through the nozzle;

[0024] S4. The logistics vehicle continues to drive the cylinder forward. At the same time, the dosing pump and the mixing pump are started to transfer the raw liquid in the raw liquid tank to the mixed liquid tank and mix it evenly with clean water.

[0025] S5. When the logistics vehicle drives the cylinder forward to the set travel distance, the high-pressure water pump group stops and the pre-cleaning is completed;

[0026] S6. The cleaning fluid is then used to clean the cylinder. The logistics vehicle then drives the cylinder in a straight line backward motion away from the nozzle. At the same time, the high-pressure water pump unit is started to pressurize the mixed liquid in the mixed liquid tank to a first set pressure and spray the mixed liquid onto the inner wall of the cylinder through the nozzle.

[0027] S7. When the logistics vehicle drives the cylinder backward to the set travel distance, the high-pressure water pump unit stops and the cleaning fluid is cleaned;

[0028] S8. High-pressure cleaning, the logistics vehicle drives the cylinder toward the direction close to the nozzle for a straight forward movement, the high-pressure water pump group 5 pressurizes the high-temperature water in the water tank to the second set pressure, and sprays the high-temperature and high-pressure water onto the inner wall of the cylinder through the nozzle;

[0029] S9. When the logistics vehicle drives the cylinder forward to the set travel distance, the high-pressure water pump group stops and the high-pressure cleaning is completed;

[0030] S10. Manual inspection: The operator enters the cylinder to check the cleaning effect. If there are small areas that are not cleaned thoroughly, the operator uses a manual high-pressure spray gun to perform additional cleaning;

[0031] S11. After the operator leaves the cylinder and reaches the designated safe area, the logistics vehicle moves the cylinder backward in a straight line away from the nozzle. The drying mechanism starts and blows air toward the inner wall of the cylinder at the third set pressure.

[0032] S12. When the logistics vehicle drives the cylinder backward to the set stroke, the drying is completed, the support wheel drive motor is turned off, the cylinder stops rotating, and the pulley drive motor is turned on again. The logistics vehicle transports the cylinder to the unloading position, and the cylinder cleaning is completed.

[0033] As a further improvement of the above technical solution:

[0034] The first set pressure range is: 5Mpa-10Mpa;

[0035] The second set pressure range is: greater than or equal to 330 Bar;

[0036] The third set pressure range is: less than or equal to 0.8 MPa;

[0037] In step S1, the target temperature range of the clean water in the clean water tank is: 70°C-80°C.

[0038] The beneficial effects of the present invention are as follows:

[0039] The present invention has a compact and reasonable structure and is easy to operate. By setting up a reasonably arranged high-pressure water cleaning device, the cleaning of the inner wall of the cylinder can be automatically completed. The operation is convenient and reasonable, and the degree of automation is high, thereby reducing the intensity and difficulty of manual labor and improving the cleaning efficiency. At the same time, by providing a reasonable cleaning method, the stability and consistency of the cylinder cleaning quality can be guaranteed, thereby improving the cleaning quality.

[0040] The present invention also has the following advantages:

[0041] (1) The present invention realizes the automation of the inner wall cleaning of the cylinder by providing a high-pressure water pump group, corresponding peripheral pipelines and water tanks, and a control system, thereby reducing the workload and difficulty of the operator and lowering the labor cost.

[0042] (2) The present invention provides a heater for the clean water tank so that the nozzle can spray high-temperature and high-pressure clean water, thereby improving the cleaning effect of the pre-cleaning of the inner wall of the cylinder.

[0043] (3) The present invention ensures that the cleaning liquid is in full contact with the inner wall of the cylinder by providing a nozzle that can spray 360 degrees, thereby improving the working efficiency of the cleaning device.

[0044] (4) The present invention provides a visual liquid level meter and a liquid level switch, transmits the liquid level signal to the control system, and realizes automatic control of the liquid level in the liquid tank by automatic water addition and drainage, thereby improving the degree of automation of the cleaning device.

[0045] (5) The present invention provides a logistics vehicle so that the cylinder can be moved to a designated position according to the cleaning steps, and can also rotate the cylinder around its axis so that the inner wall of the cylinder can be completely cleaned and dried, thereby ensuring the cleaning effect of the cylinder.

[0046] (6) The present invention is provided with a drying mechanism, which can dry the inner wall of the cylinder after cleaning. Compared with natural air drying, the drying mechanism can shorten the total cleaning time and improve production efficiency. At the same time, the drying mechanism can completely dry the inner wall of the cylinder to ensure the continuity of subsequent production.

[0047] (7) The present invention provides a cleaning liquid recovery mechanism 3 to recover the mixed liquid in the cleaning process for secondary use, thereby improving the utilization rate of the cleaning liquid, reducing pollution and damage to the environment, and reducing the cleaning cost.

[0048] (8) The present invention can prevent the logistics vehicle from leaving the logistics track by setting a limit collision block. At the same time, the logistics vehicle is provided with a buffer that cooperates with the limit collision block, which can prevent the logistics vehicle from having a violent collision with the limit collision block, thereby protecting the logistics vehicle and the cylinder on the logistics vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural schematic diagram of the present invention.

[0050] Figure 2 for Figure 1 main view.

[0051] Figure 3 for Figure 1 Top view of .

[0052] Figure 4 It is an enlarged schematic diagram of the structure of the liquid tank station in the present invention.

[0053] Figure 5 for Figure 3 A partial enlarged view of point A in the middle.

[0054] Figure 6 It is a structural schematic diagram of the logistics vehicle in the present invention.

[0055] Figure 7 for Figure 5 main view.

[0056] Figure 8 for Figure 5 Top view of .

[0057] Figure 9 for Figure 5 Bottom view of .

[0058] Figure 10 It is a structural schematic diagram of the present invention in working state.

[0059] Among them: 1. Support base; 2. Logistics vehicle; 3. Cleaning liquid recovery mechanism; 4. Drying mechanism; 5. High-pressure water pump unit; 6. Clean water tank; 7. Raw liquid tank; 8. Mixing liquid tank; 9. Stirring pump; 10. Dosing pump; 11. Spray pipe; 12. Nozzle; 13. Logistics track; 14. Limiting block; 15. Ball valve; 16. First connecting pipe; 17. Second connecting pipe; 18. Cylinder; 19. Balance seat; 20. Wire rope

[0060] 201, first seat; 202, second seat; 203, connecting shaft; 204, active support wheel; 205, auxiliary support wheel; 206, support wheel drive motor; 207, active pulley; 208, auxiliary pulley; 209, pulley drive motor; 210, buffer;

[0061] 301, water recovery pump; 302, backwash filter; 303, oil-water separator;

[0062] 401. Cylinder; 402. Nozzle mounting plate; 403. Gas nozzle. DETAILED DESCRIPTION

[0063] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0064] Example 1:

[0065] The structure and functions of this embodiment are as follows:

[0066] like Figures 1-10As shown, a high-pressure water cleaning device for the inner wall of a cylinder includes a support base 1, a clean water tank 6 is installed on the top of the support base 1, a heater is provided on the top of the clean water tank 6, the feed end of the clean water tank 6 is connected to the external water source through a first electric control valve, the clean water tank 6 is connected to the mixed liquid tank 8 through a first connecting pipe group 16, the first connecting pipe group 16 is provided with a ball valve 15, the clean water tank 6 is connected to the water inlet of the high-pressure water pump group 5 through the second connecting pipe group 17, the water outlet of the high-pressure water pump group 5 is connected to the nozzle 12 through the nozzle 11, the high-pressure water pump group 5 pressurizes the clean water in the clean water tank 6 and sprays it onto the inner wall of the cylinder 18 through the nozzle 12. The support base 1 is used to provide a working space for the control system and the high-pressure water cleaning device for the inner wall of the cylinder 18; the clean water tank 6 is connected to an external tap water source for storing clean water; the ball valve 15 prevents the mixed liquid in the mixed liquid tank 8 from flowing back into the clean water tank 6; when clean water pre-rinsing is required, the high-pressure water pump group 5 transports the clean water in the clean water tank 6 to the nozzle 12 through the nozzle 11, and then sprays the high-pressure clean water onto the inner wall of the cylinder 18 through the nozzle 12; the heater is used to heat the clean water in the clean water tank 6 so that the nozzle 12 can spray hot water, thereby improving the cleaning effect of the pre-cleaning of the inner wall of the cylinder 18.

[0067] The feed end of the mixed liquid tank 8 is provided with a dosing pump 10, which transports the raw liquid in the raw liquid tank 7 to the mixed liquid tank 8. The top of the mixed liquid tank 8 is provided with a stirring pump 9, the output end of the stirring pump 9 is connected to the stirrer, and the stirring pump 9 drives the stirrer to stir the mixed liquid in the mixed liquid tank 8 evenly. The discharge end of the mixed liquid tank 8 is connected to the water inlet of the high-pressure water pump group 5 through the second connecting pipe group 17. The high-pressure water pump group 5 pressurizes the mixed liquid in the mixed liquid tank 8 and sprays it onto the inner wall of the cylinder 18 through the nozzle 12. The mixed liquid tank 8 is used to store a mixed liquid of raw liquid and clean water and is connected to the water inlet of the high-pressure water pump group 5. When cleaning with cleaning fluid is required, the high-pressure water pump group 5 transports the mixed liquid in the mixed liquid tank 8 to the nozzle 12 through the nozzle 11, and then sprays the high-pressure cleaning fluid onto the inner wall of the cylinder 18 through the nozzle 12. The logistics vehicle 2 is used to transport the cylinder 18 and rotate the cylinder 18 to facilitate the liquid sprayed from the nozzle 12 to fully contact the inside of the cylinder 18.

[0068] A balancing seat 19 is mounted on top of the support base 1. This supports the end of the nozzle 11, while the other end of the nozzle 11 is connected to the balancing seat 19 via a steel wire rope 20. The balancing seat 19 is designed through mechanical analysis and calculation, allowing it to support the nozzle 11 at one end and maintain its balance. The other end of the nozzle 11 is connected to the balancing seat 19 via a steel wire rope 20, which bears a portion of the nozzle 11's weight and helps maintain its balance.

[0069] Several logistics tracks 13 are also installed on the top of the support base 1. The logistics tracks 13 are arranged parallel to the nozzle 11. A logistics vehicle 2 is installed on the logistics track 13. The logistics vehicle 2 is provided with a support wheel drive motor 206 and a pulley drive motor 209. The support wheel drive motor 206 drives the cylinder 18 on the logistics vehicle 2 to rotate, and the pulley drive motor 209 drives the logistics vehicle 2 to perform reciprocating linear motion along the logistics track 13.

[0070] A control system is installed on the support base 1, and several second electrically controlled valves are provided on the second connecting pipe group 17. The second connecting pipe group 17 connects the water outlet of the clean water tank 6 to the water inlet of the high-pressure water pump group 5, and the water outlet of the mixed liquid tank 8 to the water inlet of the high-pressure water pump group 5; the control system controls the corresponding second electrically controlled valves to be on or off, so that the high-pressure water pump group 5 can spray clean water or cleaning fluid. When the high-pressure water pump group 5 needs to spray clean water, the control system turns on the second electrically controlled valve at the water outlet of the clean water tank 6 and turns off the second electrically controlled valve at the water outlet of the mixed liquid tank 8; when the high-pressure water pump group 5 needs to spray cleaning fluid, the control system turns off the second electrically controlled valve at the water outlet of the clean water tank 6 and turns on the second electrically controlled valve at the water outlet of the mixed liquid tank 8.

[0071] Nozzle 12 is internally equipped with gears, and multiple water outlets are evenly distributed along the sidewalls of nozzle 12. High-pressure water from high-pressure water pump assembly 5 drives the gears inside nozzle 12 to rotate, while simultaneously discharging water through the outlets on the sidewalls of nozzle 12. The even distribution of water outlets along the sidewalls of nozzle 12 allows nozzle 12 to spray liquid in a 360-degree omnidirectional manner, ensuring sufficient contact between the cleaning liquid and the inner wall of cylinder 18, and improving the efficiency of the cleaning device.

[0072] The clean water tank 6, the raw liquid tank 7, and the mixed liquid tank 8 are all equipped with visual level gauges and level switches. These level gauges and level switches have maximum and low level alarm functions, and transmit signals to the control system, which automatically controls the liquid level in the tanks through automatic water addition and drainage. At the same time, when the liquid level in the water tank falls below the set value, the control system will alarm and automatically shut down the high-pressure water pump unit 5 to protect the water pump.

[0073] The structure of the logistics vehicle 2 is as follows: it includes a first seat 201, a pulley drive motor 209 is symmetrically installed at the bottom of the first seat 201, the output end of each pulley drive motor 209 is connected to the active pulley 207, the active pulley 207 is installed in conjunction with the logistics track 13, the bottom of the first seat 201 is also equipped with several auxiliary pulleys 208, the top of the first seat 201 is symmetrically installed with a support wheel drive motor 206, the output end of each support wheel drive motor 206 is connected to the active support wheel 204, the first seat 201 is connected to the Connecting shaft 203 is connected to second seat 202. Several auxiliary pulleys 208 are mounted on the bottom of second seat 202, and auxiliary support wheels 205 are mounted on the top of second seat 202, cooperating with active support wheels 204. Pulley drive motor 209, via active pulley 207 and auxiliary pulleys 208, drives first and second seats 201, 202 in reciprocating linear motion along logistics track 13. Support wheel drive motor 206, via active support wheels 204 and auxiliary support wheels 205, drives cylinder 18 in rotational motion about its axis. Logistics vehicle 2 achieves both reciprocating linear motion and circumferential rotation of cylinder 18, thereby assisting nozzle 12 and drying mechanism 4 in completely cleaning and drying the inner wall of cylinder 18.

[0074] A water guide trough and a water collection tank are provided on the support base 1. A cleaning liquid recovery mechanism 3 is mounted on the water collection tank. The inlet end of the cleaning liquid recovery mechanism 3 is connected to the water collection tank, and the outlet end of the cleaning liquid recovery mechanism 3 is connected to the inlet end of the mixed liquid tank 8. The water guide trough allows the cleaning liquid flowing out of the cylinder 18 to flow into the water collection tank. The cleaning liquid recovery mechanism 3 filters and recovers the cleaning liquid in the water collection tank and re-feeds it into the mixed liquid tank 8 for secondary use, thereby reducing the amount of cleaning liquid flowing into the environment and reducing environmental pollution.

[0075] The cleaning liquid recovery mechanism 3 comprises a recovery pump 301, the water inlet of which is connected to the sump, and the outlet of which is connected to the feed end of the mixed liquid tank 8. A backwash filter 302 and an oil-water separator 303 are disposed between the recovery pump 301 and the mixed liquid tank 8. The recovery pump 301 transports the mixed liquid containing the original liquid from the sump to the mixed liquid tank 8 via the backwash filter 302 and the oil-water separator 303, thereby improving the utilization rate of the cleaning liquid, reducing environmental damage, and lowering cleaning costs. The backwash filter 302 and the oil-water separator 303 are used to filter the mixed liquid.

[0076] The nozzle 11 is provided with a drying mechanism 4. This mechanism comprises a cylinder 401 fixedly mounted on the nozzle 11. The output end of the cylinder 401 is coupled to a gas nozzle 403 via a nozzle mounting plate 402. The gas nozzle 403 is connected to an external air source, and its air inlet is equipped with an air filter and an air heater. The gas nozzle 403, supplied with air from the external air source, blows air toward the inner wall of the cylinder 18. Furthermore, the logistics vehicle 2 moves the cylinder 18 back and forth along the logistics track 13, drying the cleaned inner wall of the cylinder 18. This reduces operator workload and improves production efficiency.

[0077] A limit block 14 is installed at both ends of the single logistics track 13. The limit block 14 prevents the logistics vehicle 2 from leaving the logistics track 13. At the same time, a buffer 210 is provided on the logistics vehicle 2, which cooperates with the limit block 14 to prevent the logistics vehicle 2 from violently colliding with the limit block 14.

[0078] Utilizing the above-mentioned high-pressure water cleaning device for the inner wall of a cylinder, this embodiment provides a high-pressure water cleaning method for the inner wall of a cylinder, comprising the following steps:

[0079] S1. Preparation before cleaning, the water in the clean water tank 6 is heated to the target temperature by the heater, the ball valve 15 is opened to send the clean water in the clean water tank 6 into the mixed liquid tank 8, and the cylinder 18 is placed on the logistics vehicle 2;

[0080] S2. Start the pulley drive motor 209, so that the logistics vehicle 2 drives the cylinder 18 toward the direction close to the nozzle 12 for linear forward motion, start the support wheel drive motor 206, so that the cylinder 18 rotates;

[0081] S3. Pre-cleaning: When the closed ring weld on the cylinder 18 is aligned with the nozzle 12, the high-pressure water pump unit 5 pressurizes the high-temperature clean water in the clean water tank 6 and sprays the high-temperature, high-pressure clean water onto the inner wall of the cylinder 18 through the nozzle 12. The high-temperature, high-pressure clean water is used to wet the inner wall of the cylinder 18 and remove dust for pre-cleaning.

[0082] S4 logistics vehicle 2 continues to drive the cylinder 18 forward, at the same time, the dosing pump 10 and the stirring pump 9 are started, the raw liquid in the raw liquid tank 7 is transported to the mixed liquid tank 8 and stirred with water;

[0083] S5. When the logistics vehicle 2 drives the cylinder 18 forward to the set travel distance, the high-pressure water pump unit 5 stops, the pre-cleaning is completed, and the nozzle 12 achieves a 360° high-pressure pre-wash without dead angles. The cylinder 18 is soaked in clean water to facilitate the subsequent attachment of the cleaning fluid and the removal of some low-attachment contaminants;

[0084] S6. The cleaning liquid is then applied. The logistics vehicle 2 then drives the cylinder 18 to move backward in a straight line away from the nozzle 12. Simultaneously, the high-pressure water pump unit 5 is activated, pressurizing the mixed liquid in the mixed liquid tank 8 to a first set pressure and spraying the mixed liquid onto the inner wall of the cylinder 18 through the nozzle 12. At the first set pressure, the cleaning liquid can adhere to the inner wall of the cylinder 18 in a 360-degree angle without any dead angles. During the cleaning process, the cleaning liquid needs to fully soak the inner wall of the cylinder 18.

[0085] S7. When the logistics vehicle 2 drives the cylinder 18 back to the set stroke, the high-pressure water pump group 5 stops and the cleaning fluid is cleaned;

[0086] S8. High-pressure cleaning: Logistics vehicle 2 drives cylinder 18 in a straight forward motion toward nozzle 12. High-pressure water pump unit 5 pressurizes the high-temperature clean water in clean water tank 6 to a second set pressure. The high-temperature, high-pressure clean water is sprayed onto the inner wall of cylinder 18 through nozzle 12. The second set pressure is greater than or equal to 330 bar and is adjustable. At this pressure, contaminants such as grease and welding slag adhering to the inner wall of cylinder 18 are washed away by the high-pressure clean water flow.

[0087] S9. When the logistics vehicle 2 drives the cylinder 18 forward to the set stroke, the high-pressure water pump group 5 stops and the high-pressure cleaning is completed;

[0088] S10 manual inspection, the operator enters the cylinder 18 to check the cleaning effect, when there is a small area of cleaning is not clean, the operator uses a manual high-pressure spray gun to do additional cleaning to ensure that the cylinder 18 achieves the required cleaning effect;

[0089] S11. Drying: After the operator leaves the cylinder 18 and reaches the designated safe area, the logistics vehicle 2 moves the cylinder 18 backward in a straight line away from the nozzle 12. The drying mechanism 4 starts and blows air toward the inner wall of the cylinder 18 at a third set pressure. The air filter and air heater filter, clean, and heat the external air. The gas nozzle 403 delivers low-pressure hot air to the interior of the cylinder 18 without any blind spots, ensuring that the interior of the cylinder 18 is dried in a short time.

[0090] S12. When the logistics vehicle 2 drives the cylinder 18 to move backward to the set stroke, the drying is completed, the support wheel drive motor 206 is turned off, the cylinder 18 stops rotating, and the pulley drive motor 209 is turned on again. The logistics vehicle 2 transports the cylinder 18 to the unloading position, and the cylinder 18 is cleaned.

[0091] Among them, the first set pressure range is: 5Mpa-10Mpa;

[0092] The second set pressure range is: greater than or equal to 330Bar;

[0093] The third set pressure range is: less than or equal to 0.8Mpa;

[0094] In step S1, the target temperature range of the clean water in the clean water tank 6 is: 70°C-80°C.

[0095] This embodiment can realize automatic cleaning of impurities such as oil stains on the inner wall of the cylinder 18 by rationally arranging the high-pressure water cleaning device; the cleaning method provided by this embodiment can effectively reduce the difficulty of cleaning the inner wall of the cylinder 18, reduce manual workload, improve cleaning efficiency, and better ensure the stability and consistency of the product cleaning effect.

[0096] Example 2:

[0097] This embodiment takes a large horizontal gas storage tank as an example, and uses a high-pressure water cleaning device and cleaning method for the inner wall of the cylinder as described in Example 1 to clean the inner wall of the cylinder 18 of the tank before the last closing weld is welded, including the following steps:

[0098] S1. Preparation before cleaning, the water in the water tank 6 is heated to 80 ℃ by the heater, the ball valve 15 is opened to send the water in the water tank 6 into the mixed liquid tank 8, the cylinder 18 is placed on the active support wheel 204 and the auxiliary support wheel 205;

[0099] S2. Start the pulley drive motor 209, so that the logistics vehicle 2 drives the cylinder 18 toward the direction close to the nozzle 12 for forward linear motion, start the support wheel drive motor 206, so that the active support wheel 204 and the auxiliary support wheel 205 drive the cylinder 18 to rotate;

[0100] S3. Pre-cleaning: When the closed ring weld on cylinder 18 is aligned with nozzle 12, the control system opens the second electrically controlled valve at the outlet of clean water tank 6 on second connecting pipe assembly 17 and closes the second electrically controlled valve at the outlet of mixed liquid tank 8 on second connecting pipe assembly 17. This causes high-pressure water pump assembly 5 to pressurize the high-temperature clean water in clean water tank 6 and spray the high-temperature, high-pressure clean water onto the inner wall of cylinder 18 through nozzle 12.

[0101] S4 logistics vehicle 2 continues to drive the cylinder 18 forward, at the same time, the dosing pump 10 and the stirring pump 9 are started, the raw liquid in the raw liquid tank 7 is transported to the mixed liquid tank 8 and stirred with water;

[0102] S5. When the logistics vehicle 2 drives the cylinder 18 forward to the set stroke, the high-pressure water pump group 5 stops and the pre-cleaning is completed;

[0103] S6. After cleaning with the cleaning fluid, logistics vehicle 2 then drives cylinder 18 in a linear backward motion away from nozzle 12. Simultaneously, the control system disconnects the second electrically controlled valve at the outlet of clean water tank 6 on second connecting pipe assembly 17 and opens the second electrically controlled valve at the outlet of mixed liquid tank 8 on second connecting pipe assembly 17. High-pressure water pump assembly 5 is activated to pressurize the mixed liquid in mixed liquid tank 8 to 8 MPa and spray the mixed liquid onto the inner wall of cylinder 18 through nozzle 12.

[0104] S7. When the logistics vehicle 2 drives the cylinder 18 back to the set stroke, the high-pressure water pump group 5 stops and the cleaning fluid is cleaned;

[0105] S8. High-pressure cleaning: Logistics vehicle 2 drives cylinder 18 in a straight forward motion toward nozzle 12. The control system opens the second electrically controlled valve at the outlet of clean water tank 6 on second connecting pipe assembly 17 and closes the second electrically controlled valve at the outlet of mixed liquid tank 8 on second connecting pipe assembly 17. High-pressure water pump assembly 5 pressurizes the high-temperature clean water in clean water tank 6 to 330 bar and sprays the high-temperature, high-pressure clean water onto the inner wall of cylinder 18 through nozzle 12.

[0106] S9. When the logistics vehicle 2 drives the cylinder 18 forward to the set stroke, the high-pressure water pump group 5 stops and the high-pressure cleaning is completed;

[0107] S9.1. During the automatic cleaning process of the cleaning device, the cleaning liquid is recovered by the cleaning liquid recovery mechanism 3. The clean water and cleaning liquid used in the cleaning process flow into the water collection tank through the water guide groove on the support base 1. After being filtered by the backwash filter 302 and the oil-water separator 303, the recovery pump 301 transfers the mixed liquid in the water collection tank to the mixed liquid tank 8 for secondary use, thereby reducing the amount of cleaning liquid entering the environment and reducing environmental pollution.

[0108] S10 manual inspection, the operator enters the cylinder 18 to check the cleaning effect, when there is a small area of cleaning is not clean, the operator uses a manual high-pressure spray gun to do additional cleaning;

[0109] S11. Drying, the operator leaves the cylinder 18 and reaches the designated safe area, the logistics vehicle 2 with the cylinder 18 moves backward linearly in the direction away from the nozzle 12, the drying mechanism 4 is started, the gas nozzle 403 blows toward the inner wall of the cylinder 18 at a pressure of 0.8Mpa;

[0110] S12. When the logistics vehicle 2 drives the cylinder 18 to move backward to the set stroke, the drying is completed, the support wheel drive motor 206 is turned off, the cylinder 18 stops rotating, and the pulley drive motor 209 is turned on again. The logistics vehicle 2 transports the cylinder 18 to the unloading position, and the cylinder 18 is cleaned.

[0111] This embodiment takes a large horizontal gas storage tank as an example and provides a specific method for cleaning the inner wall of the cylinder 18. By performing pre-cleaning, cleaning liquid cleaning, high-pressure cleaning, manual inspection and drying processes, the cylinder 18 is deeply cleaned and dried to meet the cleaning requirements; at the same time, an electric control valve, a ball valve 15 and a dosing pump 10 are set at the feed end of the clean water tank 6, and a visual liquid level window and a liquid level switch are provided on the side wall of the tank to monitor the liquid level in the tank in real time; the interior of the mixed liquid tank 8 is provided with an agitator driven by a stirring pump 9 and a mixed liquid turbidity meter, and a dosing pump 10 is provided on the top of the mixed liquid tank 8, which can realize real-time monitoring and automatic adjustment of the cleaning liquid concentration.

[0112] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any modifications may be made within the scope of protection of the present invention.

Claims

1. A high-pressure water cleaning device for the inner wall of a cylinder, comprising a support base (1), characterized in that: A clean water tank (6) is installed on the top of the support base (1), and a heater is provided on the top of the clean water tank (6). The feed end of the clean water tank (6) is connected to an external water source through a first electric control valve. The clean water tank (6) is communicated with the mixed liquid tank (8) through a first connecting pipe group (16). A ball valve (15) is provided on the first connecting pipe group (16). The clean water tank (6) is connected to the water inlet of the high-pressure water pump group (5) through a second connecting pipe group (17). The water outlet of the high-pressure water pump group (5) is connected to the nozzle (12) through a nozzle (11). The high-pressure water pump group (5) pressurizes the clean water in the clean water tank (6) and sprays it onto the inner wall of the cylinder (18) through the nozzle (12); The feed end of the mixed liquid tank (8) is provided with a dosing pump (10), and the dosing pump (10) transports the raw liquid in the raw liquid tank (7) to the mixed liquid tank (8). The top of the mixed liquid tank (8) is provided with a stirring pump (9), and the output end of the stirring pump (9) is connected to the stirrer. The stirring pump (9) drives the stirrer to stir the mixed liquid in the mixed liquid tank (8) uniformly. The discharge end of the mixed liquid tank (8) is connected to the water inlet of the high-pressure water pump group (5) through the second connecting pipe group (17). The high-pressure water pump group (5) pressurizes the mixed liquid in the mixed liquid tank (8) and sprays it onto the inner wall of the cylinder (18) through the nozzle (12); A balancing seat (19) is installed on the top of the support base (1), and the balancing seat (19) supports the end of the nozzle (11), and the other end of the nozzle (11) is connected to the balancing seat (19) through a steel wire rope (20); A plurality of logistics tracks (13) are also installed on the top of the support base (1), and the logistics tracks (13) are arranged parallel to the nozzle (11). A logistics vehicle (2) is installed on the logistics tracks (13). The logistics vehicle (2) is provided with a support wheel drive motor (206) and a pulley drive motor (209). The support wheel drive motor (206) drives the cylinder (18) on the logistics vehicle (2) to rotate, and the pulley drive motor (209) drives the logistics vehicle (2) to perform reciprocating linear motion along the logistics tracks (13); A control system is installed on the support base (1), and a plurality of second electrically controlled valves are provided on the second connecting pipe group (17).

2. A high-pressure water cleaning device for the inner wall of a cylinder according to claim 1, characterized in that: The nozzle (12) is provided with a gear inside, and a plurality of water spray ports are evenly arranged on the side wall of the nozzle (12). The high-pressure water flow sprayed by the high-pressure water pump group (5) drives the gear inside the nozzle (12) to rotate, and is sprayed out through the water spray ports on the side wall of the nozzle (12).

3. The high-pressure water cleaning device for the inner wall of a cylinder according to claim 1, characterized in that: The clean water tank (6), the raw liquid tank (7) and the mixed liquid tank (8) are all provided with a visual liquid level gauge and a liquid level switch.

4. A high-pressure water cleaning device for the inner wall of a cylinder according to claim 1, characterized in that: The logistics vehicle (2) has the following structure: it comprises a first vehicle seat (201), a pulley drive motor (209) is symmetrically mounted on the bottom of the first vehicle seat (201), the output end of each pulley drive motor (209) is connected to an active pulley (207), the active pulley (207) is mounted in conjunction with the logistics track (13), a plurality of auxiliary pulleys (208) are mounted in conjunction with the bottom of the first vehicle seat (201), a support wheel drive motor (206) is symmetrically mounted on the top of the first vehicle seat (201), the output end of each support wheel drive motor (206) is connected to an active support wheel (204), the first vehicle seat (201) is connected to the second vehicle seat (202) via a connecting shaft (203), a plurality of auxiliary pulleys (208) are mounted in conjunction with the bottom of the second vehicle seat (202), and an auxiliary support wheel (205) that is mounted in conjunction with the active support wheel (204) is mounted on the top of the second vehicle seat (202); The pulley drive motor (209) drives the first vehicle seat (201) and the second vehicle seat (202) to perform reciprocating linear motion along the logistics track (13) through the active pulley (207) and the auxiliary pulley (208), and the support wheel drive motor (206) drives the cylinder (18) to perform rotational motion around the axis through the active support wheel (204) and the auxiliary support wheel (205).

5. The high-pressure water cleaning device for the inner wall of a cylinder according to claim 1, characterized in that: The support base (1) is provided with a water guide trough and a water collection pool, and a cleaning liquid recovery mechanism (3) is installed on the water collection pool. The feed end of the cleaning liquid recovery mechanism (3) is connected to the water collection pool, and the discharge end of the cleaning liquid recovery mechanism (3) is connected to the feed end of the mixed liquid tank (8).

6. A high-pressure water cleaning device for the inner wall of a cylinder according to claim 5, characterized in that: The structure of the cleaning liquid recovery mechanism (3) is as follows: it includes a recovery water pump (301), the water inlet of the recovery water pump (301) is connected to the water collection tank, the water outlet of the recovery water pump (301) is connected to the feed end of the mixed liquid tank (8), and a backwash filter (302) and an oil-water separator (303) are provided between the recovery water pump (301) and the mixed liquid tank (8).

7. The high-pressure water cleaning device for the inner wall of a cylinder according to claim 1, characterized in that: The nozzle (11) is provided with a drying mechanism (4), and the structure of the drying mechanism (4) is as follows: it includes a cylinder (401) fixedly mounted on the nozzle (11), the output end of the cylinder (401) is mounted in conjunction with a gas nozzle (403) via a nozzle mounting plate (402), the gas nozzle (403) is connected to an external gas source, and the air inlet of the gas nozzle (403) is provided with an air filter and an air heater.

8. The high-pressure water cleaning device for the inner wall of a cylinder according to claim 1, characterized in that: Both ends of a single logistics track (13) are equipped with limited collision blocks (14).

9. A cleaning method using the high-pressure water cleaning device for the inner wall of a cylinder according to claim 1, characterized in that: The steps include: S1. Preparation before cleaning: heat the clean water in the clean water tank (6) to the target temperature through the heater, open the ball valve (15) to send the clean water in the clean water tank (6) into the mixed liquid tank (8), and place the cylinder (18) on the logistics vehicle (2); S2. Start the pulley drive motor (209), so that the logistics vehicle (2) drives the cylinder (18) toward the direction close to the nozzle (12) for linear forward motion, start the support wheel drive motor (206), so that the cylinder (18) rotates; S3. Pre-cleaning: When the closed ring weld on the cylinder (18) is aligned with the nozzle (12), the high-pressure water pump unit (5) pressurizes the high-temperature clean water in the clean water tank (6), and sprays the high-temperature and high-pressure clean water onto the inner wall of the cylinder (18) through the nozzle (12); S4. The logistics vehicle (2) continues to drive the cylinder (18) forward. At the same time, the dosing pump (10) and the stirring pump (9) are started to transport the raw liquid in the raw liquid tank (7) to the mixed liquid tank (8) and mix it evenly with water; S5. When the logistics vehicle (2) drives the cylinder (18) forward to the set stroke, the high-pressure water pump unit (5) stops and the pre-cleaning is completed; S6. After cleaning with the cleaning fluid, the logistics vehicle (2) drives the cylinder (18) to move backward in a straight line away from the nozzle (12). At the same time, the high-pressure water pump unit (5) is started to pressurize the mixed liquid in the mixed liquid tank (8) to a first set pressure and spray the mixed liquid onto the inner wall of the cylinder (18) through the nozzle (12); S7. When the logistics vehicle (2) drives the cylinder (18) back to the set stroke, the high-pressure water pump unit (5) stops and the cleaning fluid is cleaned; S8. High-pressure cleaning: the logistics vehicle (2) drives the cylinder (18) to move forward in a straight line toward the direction close to the nozzle (12), and the high-pressure water pump unit (5) pressurizes the high-temperature clean water in the clean water tank (6) to a second set pressure, and sprays the high-temperature and high-pressure clean water onto the inner wall of the cylinder (18) through the nozzle (12); S9. When the logistics vehicle (2) drives the cylinder (18) forward to the set stroke, the high-pressure water pump group (5) stops and the high-pressure cleaning is completed; S10 manual inspection, the operator enters the cylinder (18) to check the cleaning effect, when there is a small area of cleaning is not clean, the operator uses a manual high-pressure spray gun to do additional cleaning; S11. Drying. After the operator leaves the cylinder (18) and reaches the designated safe area, the logistics vehicle (2) with the cylinder (18) moves backward in a straight line away from the nozzle (12). The drying mechanism (4) is started and blows air toward the inner wall of the cylinder (18) at a third set pressure. S12. When the logistics vehicle (2) drives the cylinder (18) to move backward to the set stroke, the drying is completed, the support wheel drive motor (206) is turned off, the cylinder (18) stops rotating, and the pulley drive motor (209) is turned on again. The logistics vehicle (2) transports the cylinder (18) to the unloading position, and the cylinder (18) is cleaned.

10. A cleaning method according to claim 9, characterized in that: The first set pressure range is: 5Mpa-10Mpa; The second set pressure range is: greater than or equal to 330 Bar; The third set pressure range is: less than or equal to 0.8 MPa; In step S1, the target temperature range of the clean water in the clean water tank (6) is: 70°C-80°C.

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