An automatic spray cleaning device for horizontal storage tanks of high-purity chemicals

Abstract

This invention relates to the field of water-saving spray cleaning technology, specifically to an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals. The cleaning device includes a first support, which is fixedly installed on the upper end of a flange. The flange is fixedly installed on the upper end of the horizontal tank. The cleaning device includes a position adjustment mechanism and an auxiliary cleaning mechanism. The position adjustment mechanism is used to move the position of the 360° rotating spray head. The horizontal movement of the 360° rotating spray head is achieved by lifting, which facilitates the entry of the 360° rotating spray head into the tank and ensures that the 360° rotating spray head evenly cleans the inner wall of the horizontal tank. The cleaning process is fully automatic, which greatly improves the cleaning efficiency of the horizontal tank. Furthermore, by setting a counterweight, the angle of the 360° rotating spray head is automatically adjusted, so that the 360° rotating spray head can always maintain the optimal cleaning angle, which overcomes the disadvantages of horizontal movement and improves the stability of cleaning.

Description

Technical Field

[0001] This invention relates to the field of water-saving spray cleaning technology, and in particular to an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals. Background Technology

[0002] High-purity chemical storage tanks require the use of high-quality materials, such as stainless steel, to ensure superior corrosion resistance and stability against high-purity chemicals. These tanks feature a robust sealing system and a well-designed structure to effectively prevent contamination from external impurities, while maintaining the purity and quality of the chemicals. The vertical design of these tanks results in a relatively small footprint, facilitating efficient use of limited space, and their compact structure makes installation and maintenance easy. Furthermore, high-purity chemical vertical storage tanks are equipped with various accessories, such as sampling valves, discharge valves, vent valves, level gauges, and thermometers, to enable real-time monitoring and adjustment of the chemical storage status.

[0003] Currently, most horizontal storage tanks for high-purity chemicals are cleaned manually. Workers use hand-held lint-free cloths and high-pressure water guns to clean the inside of the horizontal tanks. Especially for tanks with a central opening, it's difficult to clean both ends of the tank's interior. Workers need to reach inside with their arms or bodies, which not only easily leads to internal contamination and uneven cleaning, resulting in poor cleaning effectiveness, but also requires a long cleaning time and low efficiency. Furthermore, the inner walls of horizontal storage tanks for high-purity chemicals are prone to chemical stains, requiring special cleaning solutions. These solutions are often corrosive or irritating to the skin, and manual spraying can affect the health of workers. Spraying solutions also requires changing or transferring delivery pipes, increasing cleaning time, raising the difficulty of the work, and ultimately resulting in poor cleaning effectiveness.

[0004] Therefore, an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals, so as to solve the problems of high cleaning difficulty and poor cleaning effect mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals. The cleaning device includes a first support, which is fixedly installed on the upper end of a flange. The flange is fixedly installed on the upper end of the horizontal tank. The cleaning device includes a position adjustment mechanism and an auxiliary cleaning mechanism. The position adjustment mechanism is used to move the position of a 360° rotating spray head so that the 360° rotating spray head cleans different parts of the horizontal tank and keeps the spray angle of the 360° rotating spray head stable. The auxiliary cleaning mechanism uses the movement of the 360° rotating spray head to evenly deliver a solvent to dissolve the solid waste adhering to the inner wall of the horizontal tank.

[0007] Preferably, the position adjustment mechanism includes a servo motor fixedly installed inside the upper part of the first bracket, the output shaft of the servo motor is fixedly connected to a lead screw, the outer side of the lead screw is threadedly connected to a movable seat, and the movable seat is fixedly installed with a lifting plate via a movable rod.

[0008] Preferably, one end of a guide rod is fixedly installed at the right-angle bend around the bottom of the first bracket, and the other end of the guide rod passes through the flange and is fixedly installed with a base.

[0009] Preferably, the lifting plate is fitted onto four sets of guide rods, and the four sets of guide rods are restricted by guide rod fixing plates.

[0010] Preferably, the bottom end of the lifting plate is hinged to a first connecting rod, and the upper end of the base is hinged to a second connecting rod, with several sets of first and second connecting rods hinged to each other.

[0011] Preferably, one end of the first connecting rod is fixedly connected to a mounting base, and one side of the mounting base is rotatably connected to a second bracket, on which a 360° rotating spray head is mounted.

[0012] Preferably, the bottom end of the second support is hinged to a counterweight via a connecting plate, and the counterweight is cylindrical in shape.

[0013] Preferably, the auxiliary cleaning mechanism includes an ultrapure water PFA tube fixedly connected to a 360° rotating spray head, and the ultrapure water PFA tube is fixedly connected to an ultrapure water inlet.

[0014] Preferably, one end of the telescopic liquid bladder is fixedly connected to the inner bottom of the first support, and the other end of the telescopic liquid bladder is fixedly connected to the bottom of the movable seat. The telescopic liquid bladder is fixedly connected to two sets of ultrapure water PFA tubes through the liquid delivery pipe. The lower outer part of the telescopic liquid bladder is fixedly connected to the liquid inlet pipe, and the liquid inlet pipe is fixedly connected to the liquid inlet pipe connector.

[0015] Preferably, a first check valve is provided on the liquid delivery pipe, and a second check valve is provided on the liquid inlet pipe.

[0016] The beneficial effects of this invention are:

[0017] 1. This invention utilizes a position adjustment mechanism to achieve horizontal movement of the 360° rotating spray head via a lifting mechanism. This facilitates the entry of the 360° rotating spray head into the tank and ensures that the 360° rotating spray head evenly cleans the inner wall of the horizontal tank. The cleaning process is fully automated, significantly improving the efficiency of cleaning horizontal tanks. Furthermore, by setting a counterweight, the angle of the 360° rotating spray head is automatically adjusted, ensuring that the 360° rotating spray head always maintains the optimal cleaning angle. This overcomes the drawbacks of horizontal movement and improves the stability of the cleaning process.

[0018] 2. This invention, through the design of an auxiliary cleaning mechanism in conjunction with a position adjustment mechanism, facilitates the delivery of a dissolving solution into the ultrapure water PFA tube during the movement of the 360° rotating spray head towards both ends of the horizontal tank. This allows for the uniform spraying of a mixed dissolving solution containing high-purity isopropanol, dissolving stains adhering to the inner wall of the horizontal tank. Furthermore, the process of the 360° rotating spray head retracting towards the center not only replenishes the dissolving solution in the telescopic liquid bladder, making it convenient for the 360° rotating spray head to spray the mixed dissolving solution again, but also allows the 360° rotating spray head to spray ultrapure water to clean the interior of the horizontal tank again, facilitating the removal of residual mixed dissolving solution and greatly improving the cleaning effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this 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 for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of an automatic spray cleaning device for a horizontal storage tank of high-purity chemicals according to an embodiment of the present invention.

[0021] Figure 2 This invention provides an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals. Figure 1 Schematic diagram of cross-section at point AA;

[0022] Figure 3 This invention provides an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals. Figure 2 Enlarged view of point B in the middle;

[0023] Figure 4 This invention provides an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals. Figure 2 Enlarged view of point C in the middle;

[0024] Figure 5 This invention provides an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals. Figure 2 Enlarged view of point D;

[0025] Figure 6 This is a partial perspective view of an automatic spray cleaning device for a horizontal storage tank of high-purity chemicals, according to an embodiment of the present invention. Figure 1 ;

[0026] Figure 7 This invention provides an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals. Figure 6 Enlarged view of point E in the middle;

[0027] Figure 8 This invention provides an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals. Figure 6 Enlarged diagram at point F;

[0028] Figure 9 This is a partial perspective view of an automatic spray cleaning device for a horizontal storage tank of high-purity chemicals, according to an embodiment of the present invention. Figure 2 .

[0029] The following are labeled in the diagram: 1. First support; 2. Flange; 3. Horizontal tank; 4. Guide rod; 5. Base; 6. Servo motor; 7. Lead screw; 8. Movable seat; 9. Movable rod; 10. Lifting plate; 11. First connecting rod; 12. Second connecting rod; 13. Mounting seat; 14. Second support; 15. 360° rotating spray head; 16. Counterweight; 17. Ultrapure water PFA pipe; 18. Ultrapure water inlet interface; 19. Telescopic liquid bladder; 20. Liquid delivery pipe; 21. First check valve; 22. Liquid inlet pipe; 23. Liquid inlet pipe connector; 24. Second check valve; 25. Guide rod fixing plate. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0031] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] Please see Figures 1 to 9 This invention provides a technical solution: an automatic spray cleaning device for horizontal storage tanks of high-purity chemicals. The cleaning device includes a first support 1, which is fixedly installed on the upper end of a flange 2. The flange 2 is fixedly installed on the upper end of a horizontal tank body 3. The cleaning device includes a position adjustment mechanism and an auxiliary cleaning mechanism. The position adjustment mechanism is used to move the position of a 360° rotating spray head 15 so that the 360° rotating spray head 15 cleans different parts inside the horizontal tank body 3 and keeps the spray angle of the 360° rotating spray head 15 stable. The auxiliary cleaning mechanism uses the movement of the 360° rotating spray head 15 to evenly deliver a solvent to dissolve the solid waste attached to the inner wall of the horizontal tank body 3.

[0033] As one embodiment of the present invention, such as Figure 2 and Figure 6 as well as Figure 9As shown, the position adjustment mechanism includes a servo motor 6 fixedly installed inside the upper part of the first bracket 1. The output shaft of the servo motor 6 is fixedly connected to a lead screw 7. The bottom end of the lead screw 7 is rotatably connected to the first bracket 1. The outer side of the lead screw 7 is threadedly connected to a movable seat 8. The bottom end of the movable seat 8 is fixedly connected to one end of a movable rod 9. The other end of the movable rod 9 passes through the flange 2 and is fixedly installed with a lifting plate 10. One end of a guide rod 4 is fixedly installed at a right angle around the bottom of the first bracket 1. The other end of the guide rod 4 passes through the flange 2 and is fixedly installed with a base 5. The lifting plate 10 is sleeved on four sets of guide rods 4. The four sets of guide rods 4 are connected by a guide rod fixing plate 25. To restrict movement, a first connecting rod 11 is hinged to the bottom end of the lifting plate 10, and a second connecting rod 12 is hinged to the upper end of the base 5. Several sets of first connecting rods 11 and second connecting rods 12 are hinged to each other. One end of the first connecting rod 11 is fixedly connected to a mounting base 13, and a second first bracket 14 is rotatably connected to one side of the mounting base 13. A 360° rotating spray head 15 is mounted on the second first bracket 14. A counterweight 16 is hinged to the bottom end of the second first bracket 14 through a connecting plate. The counterweight 16 is cylindrical. In use, the servo motor 6 is started, and the servo motor 6 drives the lead screw 7 to rotate, causing the movable base 8 to drive the lifting plate 10 at the bottom end of the movable rod 9 to rise and fall. Then, because several sets of first connecting rods 11 and second connecting rods 12 are hinged to each other, the lifting plate 10 drives the two sets of mounting seats 13 to move horizontally through the first connecting rods 11 and second connecting rods 12, thereby causing the two sets of 360° rotating spray heads 15 to reciprocate from the middle part of the horizontal tank 3 to both ends of the interior of the horizontal tank 3. Finally, because a second first bracket 14 supporting the 360° rotating spray head 15 is rotatably connected to one side of the mounting seat 13, and a counterweight 16 is provided at the bottom of the second first bracket 14, the gravity of the counterweight 16 acts on the second first bracket 14, causing the second first bracket 14 to rotate relative to the mounting seat 13, thereby causing the first... The 360° rotating spray head 15 on the first support 14 is always perpendicular to the horizontal tank 3, which facilitates the horizontal movement of the 360° rotating spray head 15 by lifting. This makes it easier for the 360° rotating spray head 15 to enter the tank and to evenly clean the inner wall of the horizontal tank 3. The cleaning process is fully automatic, which improves the cleaning efficiency of the horizontal tank 3. Furthermore, by setting a counterweight 16 to automatically adjust the angle of the 360° rotating spray head 15, the 360° rotating spray head 15 can always maintain the optimal cleaning angle, which helps to overcome the disadvantages of horizontal movement and improves the stability of cleaning.

[0034] As one embodiment of the present invention, such as Figure 4 and Figure 5 as well as Figure 7As shown, the auxiliary cleaning mechanism includes an ultrapure water PFA tube 17 fixedly connected to a 360° rotating spray head 15. An ultrapure water inlet port 18 is fixedly connected to the ultrapure water PFA tube 17 and is mounted on the lifting plate 10. The ultrapure water inlet port 18 is used to connect to an external ultrapure water pipeline. One end of a telescopic liquid bladder 19 is fixedly connected to the bottom of the first support 1. The other end of the telescopic liquid bladder 19 is fixedly connected to the bottom of the movable seat 8. One end of a liquid delivery pipe 20 is fixedly connected to the upper end of the telescopic liquid bladder 19. The other end of the liquid delivery pipe 20 passes through the movable seat 8 and the movable rod 9 and is fixedly connected to two sets of ultrapure water PFA tubes 17 respectively. The outer surface of the telescopic liquid bladder 19... A liquid inlet pipe 22 is fixedly connected to the lower side. The liquid inlet pipe 22 passes through the first support 1 and is fixedly connected to a liquid inlet pipe connector 23. A first one-way valve 21 is provided on the liquid delivery pipe 20. The first one-way valve 21 is fixedly installed at the bottom end of the movable rod 9. A second one-way valve 24 is provided on the liquid inlet pipe 22. The second one-way valve 24 is fixedly installed on one side of the first support 1. First, during the descent of the movable seat 8, it will compress the telescopic liquid bladder 19, so that the high-purity isopropanol solution inside the telescopic liquid bladder 19 is sent into the ultrapure water PFA pipe 17 through the liquid delivery pipe 20, so that the solution mixes into the ultrapure water transported in the ultrapure water PFA pipe 17. Then, the spray head 15 rotates 360° into the horizontal tank 3. When the two ends of the horizontal tank 3 move, the 360° rotating spray head 15 can evenly spray a cleaning solution mixed with high-purity isopropanol onto the inner wall of the horizontal tank 3, dissolving the stains adhering to the inner wall of the horizontal tank 3. Finally, during the upward movement of the movable seat 8, the telescopic liquid bladder 19 is connected to an external high-purity isopropanol dissolving solution pipe through the inlet pipe connector 23 at one end of the inlet pipe 22, replenishing the dissolving solution inside the telescopic liquid bladder 19. At the same time, the 360° rotating spray head 15 sprays ultrapure water for a second cleaning, and the first one-way valve 21 prevents the liquid in the ultrapure water PFA pipe 17 from flowing back into the telescopic liquid bladder 19, and the second one-way valve 24 prevents the dissolving solution in the telescopic liquid bladder 19 from flowing back to the outside through the inlet pipe 22. The high-purity isopropanol dissolving solution tube facilitates the feeding of the dissolving solution into the ultrapure water PFA tube 17 during the movement of the 360° rotating spray head 15 towards both ends of the horizontal tank 3. This allows for the even spraying of the mixed dissolving solution containing high-purity isopropanol, dissolving the stains adhering to the inner wall of the horizontal tank 3. Furthermore, the process of the 360° rotating spray head 15 retracting towards the center not only replenishes the dissolving solution in the telescopic liquid bladder 19, making it convenient for the 360° rotating spray head 15 to spray the mixed dissolving solution the next time it moves towards both ends of the horizontal tank 3, but also allows the 360° rotating spray head 15 to spray ultrapure water to clean the interior of the horizontal tank 3 again, facilitating the removal of any remaining mixed dissolving solution and greatly improving the cleaning effect.

[0035] Working principle: When in use, the servo motor 6 is started, which drives the lead screw 7 to rotate, causing the movable seat 8 to drive the lifting plate 10 at the bottom of the movable rod 9 to rise and fall. Then, because several sets of first connecting rods 11 and second connecting rods 12 are hinged to each other, the lifting plate 10 drives the two sets of mounting seats 13 to move horizontally through the first connecting rods 11 and second connecting rods 12, thereby causing the two sets of 360° rotating spray heads 15 to move back and forth from the middle part of the horizontal tank 3 to the two ends of the interior of the horizontal tank 3 respectively. Finally, because the second first bracket 14 supporting the 360° rotating spray head 15 is rotatably connected to one side of the mounting seat 13, and the bottom end of the second first bracket 14 is provided with a counterweight 16, the gravity of the counterweight 16 acts on the second first bracket 14, causing the second first bracket 14 to rotate relative to the mounting seat 13, thereby keeping the 360° rotating spray head 15 on the second first bracket 14 perpendicular to the horizontal tank 3.

[0036] First, during its descent, the movable seat 8 compresses the telescopic liquid bladder 19, allowing the high-purity isopropanol solution inside the bladder to be delivered through the delivery pipe 20 into the ultrapure water PFA pipe 17. This allows the solution to mix with the ultrapure water being transported in the PFA pipe 17. Then, as the 360° rotating spray head 15 moves towards both ends of the horizontal tank 3, it evenly sprays the cleaning solution mixed with high-purity isopropanol onto the inner wall of the horizontal tank 3, dissolving the stains adhering to the inner wall. Finally, the movable seat 8... During the ascent of the moving seat 8, the telescopic liquid bladder 19 is connected to the external high-purity isopropanol dissolving solution tube through the liquid inlet pipe connector 23 at one end of the liquid inlet pipe 22, replenishing the dissolving solution inside the telescopic liquid bladder 19. At the same time, the 360° rotating spray head 15 sprays ultrapure water for cleaning again. The first one-way valve 21 prevents the liquid in the ultrapure water PFA tube 17 from flowing back into the telescopic liquid bladder 19, and the second one-way valve 24 prevents the dissolving solution inside the telescopic liquid bladder 19 from flowing back into the external high-purity isopropanol dissolving solution tube through the liquid inlet pipe 22.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0038] This invention is intended to cover all such substitutions, modifications, and alterations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A high-purity chemical horizontal tank automatic spray cleaning device, the cleaning device comprising a first support (1) fixedly installed on the upper end of a flange (2) fixedly installed on the upper end of a horizontal tank body (3), characterized in that: the cleaning device comprises a position adjusting mechanism for moving the position of a 360° rotary spray head (15) to clean different parts of the horizontal tank body (3) and keep the spray angle of the 360° rotary spray head (15) stable, and an auxiliary cleaning mechanism for uniformly feeding a dissolving agent to dissolve solid waste attached to the inner wall of the horizontal tank body (3) during the movement of the 360° rotary spray head (15); the position adjusting mechanism comprises a servo motor (6) fixedly installed on the upper end inside the first support (1), the output shaft of the servo motor (6) is fixedly connected with a lead screw (7), the outer side of the lead screw (7) is threadedly connected with a movable seat (8), and the movable seat (8) is fixedly installed with a lifting plate (10) through a movable rod (9); a straight corner of the bottom end of the first support (1) is fixedly installed on one end of a guide rod (4), the other end of the guide rod (4) penetrates the flange (2) and is fixedly installed with a base (5); the bottom end of the lifting plate (10) is hingedly connected with a first connecting rod (11), the upper end of the base (5) is hingedly connected with a second connecting rod (12), and a plurality of groups of the first connecting rod (11) and the second connecting rod (12) are hingedly connected with each other; one end of the first connecting rod (11) is fixedly connected with a mounting seat (13), one side of the mounting seat (13) is rotatably connected with a second support (14), and the second support (14) is installed with the 360° rotary spray head (15); the auxiliary cleaning mechanism comprises an ultrapure water PFA pipe (17) fixedly connected with the 360° rotary spray head (15), and the ultrapure water PFA pipe (17) is fixedly connected with an ultrapure water inlet interface (18); the inside bottom end of the first support (1) is fixedly connected to one end of a telescopic liquid bag (19), the other end of the telescopic liquid bag (19) is fixedly connected to the bottom end of the movable seat (8), the telescopic liquid bag (19) is fixedly connected with two groups of ultrapure water PFA pipes (17) through a liquid feeding pipe (20), the lower part of the outside of the telescopic liquid bag (19) is fixedly connected with a liquid inlet pipe (22), and the liquid inlet pipe (22) is fixedly connected with a liquid inlet pipe joint (23). The lifting plate (10) is sleeved on four guide rods (4), and the four guide rods (4) are limited by a guide rod fixing plate (25).

2. The automatic spray cleaning device for horizontal high-purity chemical storage tank according to claim 1, characterized in that, The bottom end of the second support (14) is hingedly connected with a counterweight (16) through a connecting plate, and the counterweight (16) is in a cylindrical shape.

3. The automatic spray cleaning device for horizontal high-purity chemical storage tank according to claim 1, characterized in that, The liquid feeding pipe (20) is provided with a first one-way valve (21), and the liquid inlet pipe (22) is provided with a second one-way valve (24).

4. The automatic spray cleaning device for horizontal high-purity chemical storage tank according to claim 1, characterized in that, ​

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