Automatic spraying and cleaning device for high-purity chemical vertical storage tank

Abstract

The invention relates to the technical field of water-saving spraying and cleaning, in particular to a high-purity chemical vertical storage tank automatic spraying and cleaning device which comprises a vertical storage tank, a mounting base is fixedly mounted at the upper end of the vertical storage tank through a flange, and a supporting seat is fixedly mounted at the upper end of the mounting base. A limiting guide seat is arranged at the upper end of the mounting base and used for guiding a lifting liquid inlet metal pipe, an ultra-clean spraying head is hinged to the bottom end of the lifting liquid inlet metal pipe, an ultrapure water pipe connector is rotationally connected to the upper end of the lifting liquid inlet metal pipe, and the ultrapure water pipe connector is used for being connected with an ultrapure water pipeline penetrating through a limiting block; the spraying and cleaning device comprises a lifting mechanism, a rotating mechanism and an angle adjusting mechanism, a servo motor can be conveniently controlled through a PLC program, the periodic lifting action of the ultra-clean spraying head is achieved, the ultra-clean spraying head can conveniently and vertically clean the inner wall of the vertical storage tank, the cleaning effect is improved, pollution sources are reduced, and the interior of the storage tank is comprehensively cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of water-saving spray cleaning, and in particular to an automatic spray cleaning device for a vertical storage tank of high-purity chemicals. Background Art

[0002] High-purity chemical storage tanks need to be made of high-quality materials, such as stainless steel, to ensure their excellent corrosion resistance and stability for high-purity chemicals. These tanks have a strict sealing system and good structural design, which can effectively prevent the contamination of chemicals by external impurities while maintaining the purity and quality of the chemicals. The design of the vertical storage tank makes it relatively small in footprint, which is convenient for efficient use in limited space, and its compact structure is easy to install and maintain. In addition, the high-purity chemical vertical storage tank is also equipped with various accessories, such as sampling valves, discharge valves, exhaust valves, as well as liquid level gauges, thermometers, etc., so as to monitor and adjust the storage status of chemicals in real time.

[0003] Most of the existing high-purity chemical vertical storage tanks are cleaned manually. Workers enter the vertical storage tank with dust-free cloths and high-pressure flushing water guns, wiping with pure water while flushing with high-pressure water guns. The workers' arms or bodies will carry a lot of particles and dust, which can easily cause internal contamination of the storage tank. Cleaning tools such as high-pressure water guns are mostly ordinary stainless steel and plastic pipes, which are not high-cleanliness materials. They will also contaminate the inside of the storage tank during use. The cleanliness is difficult to meet the requirements of high-purity chemicals. Manual cleaning not only takes up a lot of workers' time, but also easily wastes water resources, and the cleaning and water-saving efficiency are low.

[0004] Therefore, an automatic spray cleaning device for a vertical storage tank of high-purity chemicals is proposed. Summary of the invention

[0005] The object of the present invention is to provide an automatic spray cleaning device for a vertical storage tank of high-purity chemicals, so as to solve the problems of poor cleaning effect and waste of water resources mentioned in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic spray cleaning device for a vertical storage tank of high-purity chemicals, comprising a vertical storage tank, a mounting base fixedly mounted on the upper end of the vertical storage tank through a flange, a support base fixedly mounted on the upper end of the mounting base, a limited position guide seat arranged on the upper end of the mounting base for guiding the lifting and lowering of a liquid inlet metal tube, an ultra-clean spray head hingedly connected to the bottom end of the lifting and lowering liquid inlet metal tube, an ultra-pure water pipe connector rotatably connected to the upper end of the lifting and lowering liquid inlet metal tube, the ultra-pure water pipe connector being used to connect an ultra-pure water pipeline passing through a limit block, and the spray cleaning device comprising a lifting mechanism, a rotary The rotating mechanism and the angle adjustment mechanism, the lifting mechanism is used to drive the ultra-clean spray head to rise and fall, so that the ultra-clean spray head can spray and clean different vertical positions of the inner wall of the vertical storage tank. The rotating mechanism uses the lifting power of the lifting mechanism to drive the ultra-clean spray head at the bottom of the lifting liquid inlet metal tube to rotate horizontally 360 degrees, so that the ultra-clean spray head can evenly clean the inner wall of the vertical storage tank. The angle adjustment mechanism uses the extreme process of the ultra-clean spray head descending to the bottom of the vertical storage tank to change the vertical angle of the ultra-clean spray head, so that the ultra-clean spray head can fully spray and clean the bottom of the vertical storage tank.

[0007] Preferably, the lifting mechanism includes a servo motor fixedly mounted on the side wall of the support seat, the output shaft of the servo motor is fixedly connected to one end of a screw rod, the other end of the screw rod is rotatably connected to the bottom end of the support seat, the outer side of the screw rod is threadedly connected to a movable seat, the inner side of the movable seat is fixedly mounted with a support frame, and the support frame is provided with a lifting liquid inlet metal tube.

[0008] Preferably, the side surface of the movable seat is attached to the inner wall of the support seat, and the support frame is rotatably connected to the lifting liquid inlet metal tube.

[0009] Preferably, the rotating mechanism includes a rack fixedly mounted on the inner wall of the support seat, the rack meshing with a gear, the gear rotatably connected to one side of the movable seat, a first rotating wheel fixedly mounted on the other side of the gear, and the first rotating wheel connected to the second rotating wheel via a belt drive.

[0010] Preferably, one side of the second rotating wheel is fixedly connected to one end of a rotating rod, the other end of the rotating rod is fixedly connected to the first bevel gear, and the rotating rod is rotatably connected to the support frame.

[0011] Preferably, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is fixedly mounted on the lifting liquid inlet metal pipe.

[0012] Preferably, the first rotating wheel and the second rotating wheel are both arranged in a circular shape, and the diameter of the first rotating wheel is larger than the diameter of the second rotating wheel.

[0013] Preferably, the angle adjustment mechanism includes a connecting hose fixedly connected to the bottom end of the lifting liquid inlet metal tube, the connecting hose is fixedly connected to an ultra-clean spray head, one side of the ultra-clean spray head is fixedly connected to a connecting block, the connecting block is fixedly connected to one end of a rope, the other end of the rope passes through the lifting liquid inlet metal tube and is fixedly connected to a slider, the slider is clamped in a slide groove, the slide groove is opened on the lifting liquid inlet metal tube, the outer side of the slide groove is fixedly connected to a slide cylinder, and the slide cylinder is sleeved on the lifting liquid inlet metal tube.

[0014] Preferably, the slider is slidably connected to the slide groove, and the slider is adapted to the slide groove.

[0015] Preferably, a return spring is fixedly connected between the lifting liquid inlet metal tube and the connecting block, and the return spring is sleeved on the rope.

[0016] Beneficial effects of the present invention: 1. The present invention is conducive to controlling the servo motor with a PLC program by designing a lifting mechanism to realize the periodic lifting action of the ultra-clean spray head, so that the ultra-clean spray head can vertically clean the inner wall of the vertical storage tank, improve the cleaning effect, reduce the pollution source, and achieve comprehensive cleaning of the interior of the storage tank.

[0017] 2. The present invention is advantageous in that the lifting process of the movable seat is used to drive the lifting liquid inlet metal tube to rotate, so that the ultra-clean spray head at the bottom end of the lifting liquid inlet metal tube can evenly spray the inner walls around the vertical storage tank, thereby improving the cleaning effect. In addition, the lifting liquid inlet metal tube can accelerate the rotation, so that the spray of the ultra-clean spray head can quickly cover the inner wall of the vertical storage tank, thereby reducing the waste of water resources and greatly improving the water-saving effect.

[0018] 3. The present invention designs an angle adjustment mechanism to cooperate with the rotating mechanism and the lifting mechanism, which is beneficial to utilizing the process of the lifting liquid inlet metal tube descending to the limit to drive the ultra-clean spray head to rotate downward, so that the ultra-clean spray head can spray and clean the bottom of the vertical storage tank. It can not only carry out all-round and orderly cleaning of the vertical storage tank without dead ends, greatly saving the utilization of water resources, but also will not interfere with the horizontal rotation cleaning of the lifting liquid inlet metal tube, greatly improving the practicability of the device, and the cleaning process is fully automatic, which improves the efficiency of tank cleaning, and during the cleaning of the device, the personnel can perform other operations to improve the work efficiency in the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is an overall three-dimensional schematic diagram of an automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to an embodiment of the present invention; Figure 2 An automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to an embodiment of the present invention Figure 1 Schematic diagram of the cross-section at AA in the middle; Figure 3 An automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to an embodiment of the present invention Figure 2 The enlarged schematic diagram of point B in the middle; Figure 4 An automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to an embodiment of the present invention Figure 2 The enlarged schematic diagram at C in the middle; Figure 5 It is a partial three-dimensional schematic diagram of an automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to an embodiment of the present invention; Figure 6 An automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to an embodiment of the present invention Figure 5 The enlarged schematic diagram at D in the middle; Figure 7 An automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to an embodiment of the present invention Figure 5 The enlarged schematic diagram at E in the middle; Figure 8 An automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to an embodiment of the present invention Figure 5 Enlarged schematic diagram at F in the middle.

[0021] The markings in the figure are: 1. Vertical storage tank; 2. Mounting base; 3. Support seat; 4. Servo motor; 5. Screw; 6. Movable seat; 7. Support frame; 8. Lifting liquid inlet metal tube; 9. Limit guide seat; 10. Ultra-clean spray head; 11. Ultra-pure water pipe connector; 12. Rack; 13. Gear; 14. First rotating wheel; 15. Belt; 16. Second rotating wheel; 17. Rotating rod; 18. First bevel gear; 19. Second bevel gear; 20. Connecting hose; 21. Connecting block; 22. Rope; 23. Slider; 24. Slide; 25. Slide; 26. Reset spring; 27. Limit block. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0023] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] See also Figures 1 to 8 The present invention provides a technical solution: an automatic spray cleaning device for a vertical storage tank of high-purity chemicals, comprising a vertical storage tank 1, a mounting base 2 is fixedly installed on the upper end of the vertical storage tank 1 through a flange, a support seat 3 is fixedly installed on the upper end of the mounting base 2, a limited position guide seat 9 is arranged on the upper end of the mounting base 2 for guiding the lifting and lowering of a liquid inlet metal pipe 8, an ultra-clean spray head 10 is hinged at the bottom end of the lifting and lowering liquid inlet metal pipe 8, an ultra-pure water pipe connector 11 is rotatably connected to the upper end of the lifting and lowering liquid inlet metal pipe 8, and the ultra-pure water pipe connector 11 is used to connect the ultra-pure water pipeline passing through the limit block 27, and the spray cleaning device comprises a lifting mechanism, a rotating mechanism and The angle adjustment mechanism and the lifting mechanism are used to drive the ultra-clean spray head 10 to lift and lower, so that the ultra-clean spray head 10 sprays and cleans different vertical positions of the inner wall of the vertical storage tank 1. The rotating mechanism uses the lifting power of the lifting mechanism to drive the ultra-clean spray head 10 at the bottom end of the lifting liquid inlet metal tube 8 to rotate horizontally 360 degrees, so that the ultra-clean spray head 10 can evenly clean the inner wall of the vertical storage tank 1. The angle adjustment mechanism uses the extreme process of the ultra-clean spray head 10 descending to the bottom end of the vertical storage tank 1 to change the vertical angle of the ultra-clean spray head 10, so that the ultra-clean spray head 10 can fully spray and clean the bottom end of the vertical storage tank 1.

[0025] As an embodiment of the present invention, Figure 2 and Figure 3 as well as Figure 5As shown, the lifting mechanism includes a servo motor 4 fixedly mounted on the side wall of the support seat 3, the output shaft of the servo motor 4 is fixedly connected to one end of a screw rod 5, the other end of the screw rod 5 is rotatably connected to the bottom end of the support seat 3, the outer side of the screw rod 5 is threadedly connected to a movable seat 6, the inner side of the movable seat 6 is fixedly mounted with a support frame 7, the support frame 7 is provided with a lifting liquid inlet metal tube 8, the side of the movable seat 6 is attached to the inner wall of the support seat 3, the support frame 7 is rotatably connected to the lifting liquid inlet metal tube 8, when in use, the servo motor 4 is started by controlling the external PLC program, the servo motor 4 drives the screw rod 5 to rotate, and then because the screw rod 5 is threadedly driven It is connected with a movable seat 6, which is attached to the support seat 3, so the servo motor 4 drives the movable seat 6 to rise and fall. Then, because the support frame 7 on one side of the movable seat 6 is rotatably connected with a lifting liquid inlet metal tube 8, and the bottom end of the lifting liquid inlet metal tube 8 is hinged with an ultra-clean spray head 10, the movable seat 6 can drive the ultra-clean spray head 10 to rise and fall, which is conducive to controlling the servo motor 4 with a PLC program to realize the periodic lifting action of the ultra-clean spray head 10, so that the ultra-clean spray head 10 can vertically clean the inner wall of the vertical storage tank 1, improve the cleaning effect, reduce the pollution source, and achieve comprehensive cleaning of the inside of the storage tank.

[0026] As an embodiment of the present invention, Figure 3 and Figure 6 as well as Figure 7As shown, the rotating mechanism includes a rack 12 fixedly mounted on the inner wall of the support seat 3, the rack 12 is meshed with a gear 13, the gear 13 is rotatably connected to one side of the movable seat 6, and a first rotating wheel 14 is fixedly mounted on the other side of the gear 13, the first rotating wheel 14 is connected to the second rotating wheel 16 through a belt 15 transmission, one side of the second rotating wheel 16 is fixedly connected to one end of a rotating rod 17, the other end of the rotating rod 17 is fixedly connected to a first bevel gear 18, the rotating rod 17 is rotatably connected to the support frame 7, the first bevel gear 18 is meshed with a second bevel gear 19, and the second bevel gear 19 is fixedly mounted on the lifting liquid inlet metal pipe 8, the first rotating wheel 14 and the second rotating wheel 16 are both circularly arranged, the diameter of the first rotating wheel 14 is larger than the diameter of the second rotating wheel 16, when the movable seat 6 is lifted or lowered, because the movable seat 6 is rotatably connected to the gear 13, the gear 13 meshes with the rack 12 on the support seat 3, so the gear 13 drives the first rotating wheel 14 to rotate The first rotating wheel 14 is connected to the second rotating wheel 16 through the belt 15 transmission, and the diameter of the first rotating wheel 14 is larger than that of the second rotating wheel 16, so the first rotating wheel 14 accelerates to drive the second rotating wheel 16 to rotate. Finally, because the second rotating wheel 16 is fixedly connected to the first bevel gear 18 through the rotating rod 17, the first bevel gear 18 is meshed with the second bevel gear 19, and the second bevel gear 19 is fixed on the lifting liquid inlet metal tube 8, the second rotating wheel 16 drives the ultra-clean spray head 10 at the bottom end of the lifting liquid inlet metal tube 8 to rotate, which is beneficial to use the lifting process of the movable seat 6 to drive the lifting liquid inlet metal tube 8 to rotate, so that the ultra-clean spray head 10 at the bottom end of the lifting liquid inlet metal tube 8 is evenly sprayed on the inner walls around the vertical storage tank 1, thereby improving the cleaning effect, and the lifting liquid inlet metal tube 8 can accelerate the rotation, so that the spray of the ultra-clean spray head 10 quickly covers a week of the inner wall of the vertical storage tank 1, thereby reducing the waste of water resources and greatly improving the water-saving effect.

[0027] As an embodiment of the present invention, Figure 4 and Figure 7 as well as Figure 8As shown, the angle adjustment mechanism includes a connecting hose 20 fixedly connected to the bottom end of the lifting liquid inlet metal tube 8, the connecting hose 20 is fixedly connected to the ultra-clean spray head 10, one side of the ultra-clean spray head 10 is fixedly connected to a connecting block 21, the connecting block 21 is fixedly connected to one end of a rope 22, the other end of the rope 22 passes through the lifting liquid inlet metal tube 8 and is fixedly connected to a slider 23, the slider 23 is clamped in a slide groove 24, the slide groove 24 is opened on the lifting liquid inlet metal tube 8, the outer side of the slide groove 24 is fixedly connected to a slide cylinder 25, and the slide cylinder 25 is sleeved on the lifting liquid inlet metal tube 8 The slider 23 is slidably connected with the slide groove 24, and the slider 23 is adapted to the slide groove 24. A reset spring 26 is fixedly connected between the lifting liquid inlet metal tube 8 and the connecting block 21, and the reset spring 26 is sleeved on the rope belt 22. When the movable seat 6 drives the support frame 7 to approach the limit guide seat 9, the ultra-clean spray head 10 at the bottom end of the lifting liquid inlet metal tube 8 approaches the bottom end of the vertical storage tank 1, and then the slide cylinder 25 sleeved on the lifting liquid inlet metal tube 8 is squeezed by the limit guide seat 9, so that the slider 23 inside the slide cylinder 25 slides upward in the slide groove 24, and then because the ultra-clean spray head 1 0 is fixedly connected to the connecting block 21 on one side, and the other end of the rope 22 is fixedly connected to the slider 23. The ultra-clean spray head 10 is hinged at the bottom end of the lifting liquid inlet metal tube 8, so the slider 23 drives the ultra-clean spray head 10 to rotate vertically downward through the connecting block 21 and the rope 22, so that the spray port of the ultra-clean spray head 10 is directly opposite to the bottom end of the vertical storage tank 1. Finally, when the lifting liquid inlet metal tube 8 moves upward, the slide cylinder 25 loses the extrusion force of the limit guide seat 9, and the restoring force of the reset spring 26 drives the ultra-clean spray head 10 to return to its original position through the connecting block 21. The device is arranged in such a way that the ultra-clean spray head 10 is driven to rotate downward by utilizing the process of the lifting liquid inlet metal tube 8 descending to its limit, so that the ultra-clean spray head 10 can spray and clean the bottom end of the vertical storage tank 1. Not only can the vertical storage tank 1 be cleaned in an all-round and orderly manner without dead ends, which greatly saves the utilization of water resources, but also will not interfere with the horizontal rotation cleaning of the lifting liquid inlet metal tube 8, which greatly improves the practicability of the device, and the cleaning process is fully automatic, which improves the efficiency of tank cleaning, and during the cleaning of the device, personnel can perform other operations, thereby improving the work efficiency within the factory.

[0028] Working principle: When in use, the servo motor 4 is started by controlling the external PLC program, and the servo motor 4 drives the screw rod 5 to rotate. Then, because the screw rod 5 is threadedly connected to the movable seat 6, and the movable seat 6 is attached to the support seat 3, the servo motor 4 drives the movable seat 6 to rise and fall. Then, because the support frame 7 on one side of the movable seat 6 is rotatably connected to the lifting liquid inlet metal pipe 8, and the bottom end of the lifting liquid inlet metal pipe 8 is hinged with an ultra-clean spray head 10, the movable seat 6 can drive the ultra-clean spray head 10 to rise and fall; When the movable seat 6 is lifted or lowered, because the movable seat 6 is rotatably connected to the gear 13, and the gear 13 meshes with the rack 12 on the support seat 3, the gear 13 drives the first rotating wheel 14 to rotate, and then because the first rotating wheel 14 is connected to the second rotating wheel 16 through the belt 15 transmission, and the diameter of the first rotating wheel 14 is larger than that of the second rotating wheel 16, the first rotating wheel 14 accelerates to drive the second rotating wheel 16 to rotate, and finally because the second rotating wheel 16 is fixedly connected to the first bevel gear 18 through the rotating rod 17, the first bevel gear 18 meshes with the second bevel gear 19, and the second bevel gear 19 is fixed on the lifting liquid inlet metal tube 8, the second rotating wheel 16 drives the ultra-clean spray head 10 at the bottom end of the lifting liquid inlet metal tube 8 to rotate; When the movable seat 6 drives the supporting frame 7 to approach the limiting guide seat 9, the ultra-clean spray head 10 at the bottom end of the lifting liquid inlet metal tube 8 approaches the bottom end of the vertical storage tank 1, and then the slide cylinder 25 sleeved on the lifting liquid inlet metal tube 8 is squeezed by the limiting guide seat 9, so that the slider 23 inside the slide cylinder 25 slides upward in the slide groove 24, and then because the connecting block 21 on one side of the ultra-clean spray head 10 is fixedly connected with a rope 22, and the other end of the rope 22 is fixedly connected with a slider 23, the ultra-clean spray head 10 is hinged at the bottom end of the lifting liquid inlet metal tube 8, so the slider 23 drives the ultra-clean spray head 10 to rotate vertically downward through the connecting block 21 and the rope 22, so that the spray port of the ultra-clean spray head 10 is facing the bottom end of the vertical storage tank 1, and finally when the lifting liquid inlet metal tube 8 moves upward, the slide cylinder 25 loses the squeezing force of the limiting guide seat 9, and the restoring force of the reset spring 26 drives the ultra-clean spray head 10 to return to its original position through the connecting block 21.

[0029] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0030] The present invention is intended to cover all such substitutions, modifications and changes that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic spray cleaning device for a vertical storage tank of high-purity chemicals, comprising a vertical storage tank (1), wherein a mounting base (2) is fixedly mounted on the upper end of the vertical storage tank (1) via a flange, a support base (3) is fixedly mounted on the upper end of the mounting base (2), a limiting guide seat (9) is provided on the upper end of the mounting base (2) for guiding a lifting liquid inlet metal pipe (8), an ultra-clean spray head (10) is hingedly connected to the bottom end of the lifting liquid inlet metal pipe (8), an ultra-pure water pipe connector (11) is rotatably connected to the upper end of the lifting liquid inlet metal pipe (8), and the ultra-pure water pipe connector (11) is used to connect an ultra-pure water pipeline passing through a limiting block (27), Features: The spray cleaning device comprises a lifting mechanism, a rotating mechanism and an angle adjustment mechanism. The lifting mechanism is used to drive the ultra-clean spray head (10) to lift and lower, so that the ultra-clean spray head (10) sprays and cleans different vertical positions of the inner wall of the vertical storage tank (1). The rotating mechanism uses the lifting power of the lifting mechanism to drive the ultra-clean spray head (10) at the bottom end of the lifting liquid inlet metal pipe (8) to rotate horizontally 360 degrees, so that the ultra-clean spray head (10) evenly cleans the inner wall of the vertical storage tank (1) all around. The angle adjustment mechanism uses the extreme process of the ultra-clean spray head (10) descending to the bottom end of the vertical storage tank (1) to change the vertical angle of the ultra-clean spray head (10), so that the ultra-clean spray head (10) fully sprays and cleans the bottom end of the vertical storage tank (1).

2. According to claim 1, an automatic spray cleaning device for a vertical storage tank of high-purity chemicals, It is characterized in that The lifting mechanism comprises a servo motor (4) fixedly mounted on a side wall of a support seat (3); an output shaft of the servo motor (4) is fixedly connected to one end of a screw rod (5); the other end of the screw rod (5) is rotatably connected to the bottom end of the support seat (3); an outer side of the screw rod (5) is threadedly connected to a movable seat (6); a support frame (7) is fixedly mounted on the inner side of the movable seat (6); and a lifting liquid inlet metal pipe (8) is provided on the support frame (7).

3. The automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to claim 2, It is characterized in that The side surface of the movable seat (6) is attached to the inner wall of the support seat (3), and the support frame (7) is rotatably connected to the lifting liquid inlet metal pipe (8).

4. The automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to claim 1, It is characterized in that The rotating mechanism comprises a rack (12) fixedly mounted on the inner wall of the support seat (3), the rack (12) being meshed with a gear (13), the gear (13) being rotatably connected to one side of the movable seat (6), a first rotating wheel (14) being fixedly mounted on the other side of the gear (13), and the first rotating wheel (14) being connected to a second rotating wheel (16) via a belt (15).

5. The automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to claim 4, It is characterized in that One end of a rotating rod (17) is fixedly connected to one side of the second rotating wheel (16), the other end of the rotating rod (17) is fixedly connected to a first bevel gear (18), and the rotating rod (17) is rotatably connected to the support frame (7).

6. The automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to claim 5, It is characterized in that The first bevel gear (18) is meshed with a second bevel gear (19), and the second bevel gear (19) is fixedly mounted on the lifting liquid inlet metal pipe (8).

7. The automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to claim 6, It is characterized in that The first rotating wheel (14) and the second rotating wheel (16) are both arranged in a circular shape, and the diameter of the first rotating wheel (14) is greater than the diameter of the second rotating wheel (16).

8. The automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to claim 1, It is characterized in that The angle adjustment mechanism comprises a connecting hose (20) fixedly connected to the bottom end of the lifting liquid inlet metal tube (8), the connecting hose (20) being fixedly connected to the ultra-clean spray head (10), one side of the ultra-clean spray head (10) being fixedly connected to a connecting block (21), the connecting block (21) being fixedly connected to one end of a rope (22), the other end of the rope (22) passing through the lifting liquid inlet metal tube (8) and being fixedly connected to a slider (23), the slider (23) being clamped in a slide groove (24), the slide groove (24) being provided on the lifting liquid inlet metal tube (8), the outer side of the slide groove (24) being fixedly connected to a slide cylinder (25), the slide cylinder (25) being sleeved on the lifting liquid inlet metal tube (8).

9. The automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to claim 8, It is characterized in that The slider (23) is slidably connected to the slide groove (24), and the slider (23) is adapted to the slide groove (24).

10. The automatic spray cleaning device for a vertical storage tank of high-purity chemicals according to claim 8, It is characterized in that A return spring (26) is fixedly connected between the lifting liquid inlet metal tube (8) and the connecting block (21), and the return spring (26) is sleeved on the rope belt (22).

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