Rotary spraying cleaning device
By designing a rotary spray cleaning device with a spray seat assembly, a rotary spray mechanism, and a drive mechanism, the problems of high energy consumption and high cost of existing rotary nozzles are solved, achieving efficient and economical cleaning results and extending the service life of the equipment.
Patent Information
- Application Number
- CN202423134131.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing rotary nozzle devices suffer from high energy consumption, high manufacturing costs, and high maintenance costs, and their small spray area makes it difficult to meet the needs of efficient cleaning.
A rotary spray cleaning device is designed, comprising a spray seat assembly, a rotary spray mechanism, and a drive mechanism. It employs a central shaft, a bearing assembly, and a sealing assembly. The central shaft is driven to rotate by a servo motor and a reducer, which in turn drives the spray support to rotate circumferentially, achieving efficient spraying. The bearing assembly and sealing assembly also improve the stability and sealing of the equipment.
It achieves efficient and economical cleaning results, reduces energy consumption, extends equipment lifespan, and can precisely control rotation speed to prevent internal liquid accumulation.
Smart Images
Figure CN223655243U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of cleaning equipment, and particularly relates to a rotary spraying cleaning device. BACKGROUND
[0002] With the continuous progress of automation technology, the demand for automation equipment is increasingly diversified in various industries, and the spraying link is very important in the processes of cleaning, humidifying, cooling, electroplating or surface treatment.
[0003] In the process of spraying cleaning, the spraying equipment sprays cleaning liquid such as chemical cleaning agent or water to the surface of the object to be cleaned through the water pump, and uses the impact, infiltration, dissolution and chemical reaction of the liquid to remove dirt from the surface of the object. Generally, the spraying cleaning equipment sprays the surface of the object to be cleaned by using multiple self-rotating nozzles, however, the self-rotating nozzle often drives the liquid delivery pipe connected thereto to rotate around it when rotating; the spraying area of a single nozzle is small, not only requiring a large flow of liquid, but also consuming a large amount of power to maintain the rotation of multiple nozzles during the spraying process, resulting in high overall energy consumption.
[0004] The current patent discloses a rotary nozzle and a spraying system, which solves the problem of the liquid inlet pipe rotating with the nozzle by using a rotary joint, and increases the spraying area of a single nozzle and reduces the number of nozzles. However, in order to overcome the defects of the rotary nozzle itself and to control accurately, the patent needs to set up a large number of components for each rotary nozzle, which not only greatly increases the manufacturing cost, but also is prone to failure due to too many components after long-term use, and the replacement and maintenance cost of manpower and economy is higher than that of ordinary nozzles, and the economic benefit of the spraying system is very poor. Therefore, there is an urgent need to provide a rotary spraying cleaning device that can solve the above problems. UTILITY MODEL CONTENTS
[0005] The utility model aims at the above-mentioned insufficient place and provides a rotary spraying cleaning device, and aims at solving the problem of poor economic benefit of the current self-rotating nozzle. In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A rotary spray cleaning device comprises a spray seat assembly, a rotary spray mechanism and a driving mechanism; the spray seat assembly comprises a spray seat shell, a central shaft, a bearing assembly and two sealing assemblies; the spray seat shell comprises an upper end cover, a first shell and a second shell connected in sequence from top to bottom; a cavity for containing fluid is arranged in the first shell of the spray seat shell, and a fluid inlet hole communicating with the cavity is arranged on the side wall of the first shell; the central shaft is rotatably arranged in the spray seat shell in the vertical direction, and the upper end of the central shaft extends upward and beyond the upper end cover; the central shaft is transversely provided with a first through hole communicating with the cavity at both ends; the central shaft is vertically provided with a fluid outlet hole communicating with the upper end surface of the central shaft and the first through hole; a drain hole communicating with the inside of the second shell is further arranged on the lower side of the peripheral wall of the second shell; the bearing assembly is arranged on the peripheral wall of the central shaft in the spray seat shell; the two sealing assemblies are arranged in the spray seat shell and located on the upper and lower sides of the sealing cavity respectively; the rotary spray mechanism comprises a spray bracket and a plurality of spray heads arranged on the top of the spray bracket; the spray bracket is fixedly connected with the upper end of the central shaft; the spray bracket forms a spray channel communicating with the fluid outlet hole and the interiors of the plurality of spray heads; the driving mechanism is drivingly connected below the central shaft, for driving the central shaft to rotate and driving the spray bracket to rotate in the circumferential direction.
[0007] Further, the bearing assembly is arranged in the first shell; the bearing assembly comprises a first deep groove ball bearing, a second deep groove ball bearing and a thrust ball bearing; the first deep groove ball bearing and the second deep groove ball bearing are respectively located on the upper and lower sides of the first through hole; the thrust ball bearing is arranged above the first deep groove ball bearing; a retainer ring is further arranged between the thrust ball bearing and the first deep groove ball bearing.
[0008] Further, the sealing assembly comprises a skeleton oil seal, a spacer and a lip seal; one of the sealing assemblies is arranged between the inner wall of the upper end cover and the peripheral wall of the central shaft, and the other sealing assembly is arranged between the upper side of the inner wall of the second shell and the peripheral wall of the central shaft; the skeleton oil seal, the spacer and the lip seal of any one of the sealing assemblies are arranged in sequence in the vertical direction away from the first through hole.
[0009] Further, the driving mechanism comprises a servo motor and a speed reducer; the output end of the servo motor is drivingly connected with the lower end of the speed reducer; the lower end of the central shaft extends downward and beyond the second shell; the lower end of the central shaft is connected with the upper end of the speed reducer.
[0010] Further, it further comprises a speed reducer shell; the speed reducer is rotatably arranged in the speed reducer shell; the upper end of the speed reducer shell is fixedly connected with the lower end of the second shell; a second skeleton oil seal is further arranged between the inner wall of the lower end of the second shell and the peripheral wall of the central shaft.
[0011] Further, the spray support comprises a main support and a connecting support; the connecting support is vertically arranged at the central lower side of the main support; the connecting support is connected with the upper end of the central shaft; the liquid outlet direction of the spray head is perpendicular to the length direction of the main support.
[0012] Further, the plurality of spray heads are arranged in sequence and parallel to each other along the length direction of the main support; among the plurality of spray heads, one spray head is arranged at the central top of the main support, and the rest of the spray heads are symmetrically arranged at the left and right sides of the top of the main support.
[0013] Further, among the plurality of spray heads arranged at the left side or the right side of the main support, the distance between any two adjacent spray heads is equal.
[0014] Further, the connecting support is internally provided with a first channel in communication with the fluid outlet hole of the central shaft; the main support is internally provided with a second channel in communication with the first channel and the interiors of the plurality of spray heads; the first channel and the second channel jointly form a spray channel.
[0015] Further, the upper end of the central shaft is provided with a first external thread; the lower end of the connecting support is provided with a first internal thread matched with the central shaft; the thread screwing direction in the first internal thread is consistent with the rotating direction of the main support.
[0016] The beneficial effects of the present utility model are:
[0017] The utility model discloses a rotary spray cleaning device belongs to cleaning equipment field, including spray seat subassembly, rotary spray mechanism and drive mechanism, spray seat subassembly includes spray seat casing, central shaft, bearing assembly and two sealing assemblies, is equipped with the cavity in the first casing of spray seat casing, and the fluid inlet hole of communicating cavity is set up on the first casing lateral wall, and the central shaft is rotatable and is arranged in the spray seat casing along the vertical, and the first through -hole is set up to the central shaft, and the fluid outlet hole is set up vertically, and bearing assembly is set up on the central shaft outer wall in the spray seat casing, and two sealing assemblies are used for sealing the cavity, and rotary spray mechanism includes spray support and the plurality of spray heads of being arranged at the top of spray support, and drive mechanism drive connection is in the lower side of central shaft, is used for driving the spray support rotation along the circumference through driving central shaft rotation. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the structure schematic diagram of the utility model, and
[0019] Figure 2 The a drawing of the utility model is the structure schematic diagram of spray seat subassembly and drive mechanism, and the b drawing is the sectional view of a drawing in C-C direction,
[0020] In the drawings: 1, spray seat shell; 2, center shaft; 3, bearing assembly; 4, sealing assembly; 5, spray support; 6, spray head; 7, servo motor; 8, speed reducer; 11, upper end cover; 12, first shell; 13, second shell; 14, cavity; 121, fluid inlet hole; 131, liquid discharge hole; 21, first through hole; 22, fluid outlet hole; 31, first deep groove ball bearing; 32, second deep groove ball bearing; 33, thrust ball bearing; 34, baffle ring; 41, skeleton oil seal; 42, spacer ring; 43, lip seal; 51, main support; 52, connecting support; 81, speed reducer shell; 82, second skeleton oil seal. DETAILED DESCRIPTION
[0021] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0022] In the description of the present application, "first feature" and "second feature" can include one or more features.
[0023] In the description of the present application, "a plurality of" means two or more.
[0024] In the description of the present application, "above" or "below" of the first feature with respect to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature therebetween.
[0025] In the description of the present application, "above", "above" and "above" of the first feature with respect to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height.
[0026] The present application will be further described in detail below in conjunction with the drawings and specific embodiments, but the present application is not limited to the following embodiments.
[0027] Example 1:
[0028] See the drawings Figure 1The utility model provides a shower seat assembly, a rotating shower mechanism and a driving mechanism, the shower seat assembly comprises a shower seat housing 1, a central shaft 2, a bearing assembly 3 and two sealing assemblies 4, the shower seat housing 1 comprises an upper end cover 11, a first housing 12 and a second housing 13 connected in sequence from top to bottom, a cavity 14 for containing fluid is arranged in the first housing 12 of the shower seat housing 1, and a fluid inlet hole 121 is formed in the side wall of the first housing 12 and communicates with the cavity 14, the central shaft 2 is rotatably arranged in the shower seat housing 1 in the vertical direction, and the upper end of the central shaft 2 extends upwards and beyond the upper end cover 11, the central shaft 2 is transversely provided with a first through hole 21 communicating with the cavity 14 at both ends, the central shaft 2 is vertically provided with a fluid outlet hole 22 communicating with the upper end surface of the central shaft 2 and the first through hole 21, a drain hole 131 is further formed in the lower side of the peripheral wall of the second housing 13 and communicates with the inside of the second housing 13, the bearing assembly 3 is sleeved on the peripheral wall of the central shaft 2 in the shower seat housing 1, and the two sealing assemblies 4 are arranged in the shower seat housing 1 and located on the upper and lower sides of the sealing cavity 14 respectively, the rotating shower mechanism comprises a shower support 5 and a plurality of shower heads 6 arranged on the top of the shower support 5, the shower support 5 is fixedly connected with the upper end of the central shaft 2, a shower channel is formed in the shower support 5 and communicates with the fluid outlet hole 22 and the interiors of the plurality of shower heads 6, and the driving mechanism is drivingly connected below the central shaft 2 and used for driving the central shaft 2 to rotate and driving the shower support 5 to rotate in the circumferential direction.The upper end of the central shaft 2 extends upwardly and beyond the upper end cover 11, and the part beyond the upper end cover 11 is used for being connected with the rotary spraying mechanism to deliver fluid to the rotary spraying mechanism. A bearing assembly 3 is further sleeved on the outer wall of the central shaft 2 in the spray seat shell 1, and the bearing assembly 3 is used for providing sufficient support force for the central shaft 2 and meeting the use rotation speed requirement. Two sealing assemblies 4 are arranged in the spray seat shell 1 and are respectively located on the upper and lower sides of the sealing cavity 14 to prevent most of the fluid from overflowing outward. In addition, the spray seat shell 1 is vertically placed during use, and the second shell 13 below the first shell 12 is further provided with a drain hole 131 in the lower side of the outer wall of the second shell 13 to communicate with the inside of the second shell 13, so that the leaked fluid can be discharged through the drain hole 131 in the case of a small amount of fluid leakage downward due to long-time use of the equipment or due to sealing failure, and internal liquid accumulation is prevented. The rotary spraying mechanism comprises a spraying support 5 and a plurality of spray heads 6 arranged on the top of the spraying support 5, the spraying support 5 is fixedly connected with the upper end of the central shaft 2, and the spraying support 5 is formed with a spraying channel communicating with the fluid outlet hole 22 and the inside of the plurality of spray heads 6, so that the fluid can be delivered to the spray heads 6 and sprayed from the outlets of the spray heads 6. The spray heads 6 do not rotate by themselves, but are driven to rotate by the driving mechanism, so as to drive the spraying support 5 to rotate circumferentially, so that the plurality of spray heads 6 can move circumferentially, thereby completing the surface cleaning of the object. Moreover, the driving mechanism can accurately control the rotation speed of the central shaft 2 to meet the rotation speed requirement of various cleaning. The utility model changes the rotary spraying mode of the rotary support, can fundamentally eliminate the influence of the defects of the self-rotating spray head, has good economic benefits, can accurately control the rotation speed, and prevents internal liquid accumulation.
[0029] Example two:
[0030] See the attached Figures 1-2On the basis of the first embodiment, the bearing assembly 3 is arranged in the first shell 12; the bearing assembly 3 comprises a first deep groove ball bearing 31, a second deep groove ball bearing 32 and a thrust ball bearing 33; the first deep groove ball bearing 31 and the second deep groove ball bearing 32 are respectively arranged on the upper and lower sides of the first through hole 21; the thrust ball bearing 33 is arranged above the first deep groove ball bearing 31; and the thrust ball bearing 33 and the first deep groove ball bearing 31 are further clamped with a retainer 34. As can be seen from the above structure, the deep groove ball bearing can simultaneously bear a large radial and axial load, the first deep groove ball bearing 31 and the second deep groove ball bearing 32 are respectively arranged on the upper and lower sides of the first through hole 21, which can disperse the load, so that the center shaft 2 can meet the use requirement of high pressure and high speed, and the thrust ball bearing 33 can bear a certain axial load and can provide stronger support force for the center shaft 2, so that the equipment runs more stably and the service life is prolonged. Specifically, the first deep groove ball bearing 31, the second deep groove ball bearing 32 and the thrust ball bearing 33 can all adopt ceramic bearings, which can still maintain good self-lubricating property under oil-free condition, without the need of additional injection of lubricating liquid. The thrust ball bearing 33 and the first deep groove ball bearing 31 are further clamped with the retainer 34, the retainer 34 can keep the distance between the thrust ball bearing 33 and the first deep groove ball bearing 31 unchanged, so that the thrust ball bearing 33 and the first deep groove ball bearing 31 can work in the correct position, and the friction between the thrust ball bearing 33 and the first deep groove ball bearing 31 is reduced, thereby prolonging the service life of the equipment.
[0031] The sealing assembly 4 comprises a skeleton oil seal 41, a spacer ring 42 and a lip seal ring 43; one of the sealing assemblies 4 is arranged between the inner wall of the upper end cover 11 and the outer peripheral wall of the center shaft 2, and the other sealing assembly 4 is arranged between the upper side of the inner wall of the second shell 13 and the outer peripheral wall of the center shaft 2; the skeleton oil seal 41, the spacer ring 42 and the lip seal ring 43 of any one of the sealing assemblies 4 are sequentially arranged in the vertical direction away from the first through hole 21. As can be seen from the above structure, one of the sealing assemblies 4 is used to seal the part between the inner wall of the upper end cover 11 and the outer peripheral wall of the center shaft 2, and the lip seal ring 43, the spacer ring 42 and the skeleton oil seal 41 are sequentially arranged from top to bottom, and the other sealing assembly 4 is used to seal the part between the upper side of the inner wall of the second shell 13 and the outer peripheral wall of the center shaft 2, and the skeleton oil seal 41, the spacer ring 42 and the lip seal ring 43 are sequentially arranged from top to bottom, and the two sealing assemblies 4 cooperate to ensure the sealing performance of the cavity 14.
[0032] The driving mechanism comprises a servo motor 7 and a speed reducer 8; the output end of the servo motor 7 is drivingly connected with the lower end of the speed reducer 8; the lower end of the central shaft 2 extends downward and beyond the second shell 13; and the lower end of the central shaft 2 is connected with the upper end of the speed reducer 8. As can be seen from the above structure, the output end of the servo motor 7, the speed reducer 8 and the central shaft 2 are coaxially arranged, wherein the servo motor 7 can be externally connected with a controller, so that the staff can control the rotating speed of the servo motor 7 according to the rotating speed requirement, and the central shaft 2 is driven to rotate by the speed reducer 8, thereby meeting the rotating speed requirement, reducing the vibration and noise of the equipment and prolonging the service life of the equipment.
[0033] The speed reducer 8 is rotatably arranged in the speed reducer shell 81; the upper end of the speed reducer shell 81 is fixedly connected with the lower end of the second shell 13; and a second skeleton oil seal 82 is further arranged between the inner wall of the lower end of the second shell 13 and the peripheral wall of the central shaft 2. As can be seen from the above structure, the upper end of the speed reducer shell 81 and the lower end of the second shell 13 can be fixedly connected by means of existing connection methods such as bolt fixing. The second skeleton oil seal 82 is further arranged between the inner wall of the lower end of the second shell 13 and the peripheral wall of the central shaft 2, and is used for preventing fluid from leaking downward into the interior of the speed reducer 8 and affecting the normal use of the equipment.
[0034] Embodiment three:
[0035] See the attached Figures 1-2 On the basis of embodiment two, the spray support 5 comprises a main support 51 and a connecting support 52; the connecting support 52 is vertically arranged at the lower side of the center of the main support 51; the connecting support 52 is connected with the upper end of the central shaft 2; and the liquid outlet direction of the spray head 6 is perpendicular to the length direction of the main support 51. As can be seen from the above structure, the spray support 5 comprises the main support 51 and the connecting support 52, the connecting support 52 is vertically arranged at the lower side of the center of the main support 51, and the lower end of the connecting support 52 is connected with the upper end of the central shaft 2, which is used for inputting fluid from the fluid outlet hole 22 into the spray channel in the interior of the spray support 5, so that the fluid for cleaning is sprayed outward through the spray head 6. The liquid outlet direction of the spray head 6 is perpendicular to the length direction of the main support 51, which is to prevent the normal rotation of the main support 51 from being affected by the lateral spraying force of the spray head 6.
[0036] A plurality of spray heads 6 are arranged in sequence along the length direction of the main support 51 and are parallel to each other; among the plurality of spray heads 6, one spray head 6 is arranged at the center of the top of the main support 51, and the remaining spray heads 6 are symmetrically arranged at the left and right sides of the top of the main support 51. As can be seen from the above structure, one spray head 6 is arranged at the center of the top of the main support 51, and the remaining spray heads 6 are symmetrically arranged at the left and right sides of the top of the main support 51, which can further optimize the arrangement of the spray heads 6, so as to realize full-coverage spraying with a small number of nozzles and achieve the function of surface cleaning. Specifically, the model of the spray head 6 is selected according to the requirement, and preferably, a spray head 6 with a spraying coverage angle of 50° and a spraying distance of about 90 mm can be selected.
[0037] The distance between any two adjacent spray heads 6 on the left side or the right side of the main support 51 is equal.
[0038] The first channel is used to deliver the fluid in the central shaft 2 to the connecting support 52, and the second channel is used to continue delivering the fluid in the connecting support 52 to each spray head 6 and spraying outward through the spray head 6.
[0039] The upper end of the central shaft 2 is provided with a first external thread, the lower end of the connecting support 52 is provided with a first internal thread matched with the central shaft 2, and the thread direction in the first internal thread is consistent with the rotating direction of the main support 51.
[0040] Preferably, the upper end cover 11 and the first shell 12 and the first shell 12 and the second shell 13 can also be fixedly connected through a plurality of bolts.
[0041] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.
Claims
1. A rotary spray cleaning device, characterized in that: Includes a spray base assembly, a rotating spray mechanism, and a drive mechanism; The spray seat assembly includes a spray seat housing (1), a central shaft (2), a bearing assembly (3), and two sealing assemblies (4); the spray seat housing (1) includes an upper end cover (11), a first housing (12), and a second housing (13) connected sequentially from top to bottom; a cavity (14) for containing fluid is provided in the first housing (12) of the spray seat housing (1), and a fluid inlet hole (121) communicating with the cavity (14) is provided on the side wall of the first housing (12); the central shaft (2) is rotatably inserted vertically in the spray seat housing (1), and the upper end of the central shaft (2) extends upward and Beyond the upper end cover (11); the central shaft (2) has a first through hole (21) that is horizontally opened and both ends are connected to the cavity (14); the central shaft (2) has a fluid outlet hole (22) that is vertically opened and connects the upper end face of the central shaft (2) with the first through hole (21); the lower side of the outer peripheral wall of the second housing (13) also has a drain hole (131) that connects to the inside of the second housing (13); the bearing assembly (3) is sleeved on the outer peripheral wall of the central shaft (2) located inside the spray seat housing (1); two sealing assemblies (4) are located inside the spray seat housing (1) and are respectively located on the upper and lower sides of the sealing cavity (14); The rotating spray mechanism includes a spray support (5) and a plurality of nozzles (6) disposed on the top of the spray support (5); the spray support (5) is fixedly connected to the upper end of the central shaft (2); a spray channel is formed inside the spray support (5) that connects the fluid outlet hole (22) and the interior of the plurality of nozzles (6); The drive mechanism is connected below the central shaft (2) and is used to drive the spray bracket (5) to rotate circumferentially by driving the central shaft (2) to rotate.
2. The rotary spray cleaning device according to claim 1, characterized in that: The bearing assembly (3) is disposed within the first housing (12); the bearing assembly (3) includes a first deep groove ball bearing (31), a second deep groove ball bearing (32) and a thrust ball bearing (33); the first deep groove ball bearing (31) and the second deep groove ball bearing (32) are respectively located on the upper and lower sides of the first through hole (21); the thrust ball bearing (33) is disposed above the first deep groove ball bearing (31); a retaining ring (34) is also sandwiched between the thrust ball bearing (33) and the first deep groove ball bearing (31).
3. The rotary spray cleaning device according to claim 2, characterized in that: The sealing assembly (4) includes a skeleton oil seal (41), a spacer (42), and a lip seal (43); one sealing assembly (4) is located between the inner wall of the upper end cover (11) and the outer peripheral wall of the central shaft (2), and the other sealing assembly (4) is located between the upper side of the inner wall of the second housing (13) and the outer peripheral wall of the central shaft (2); the skeleton oil seal (41), spacer (42), and lip seal (43) of any sealing assembly (4) are arranged sequentially along a vertical direction away from the first through hole (21).
4. The rotary spray cleaning device according to claim 1, characterized in that: The drive mechanism includes a servo motor (7) and a reducer (8); the output end of the servo motor (7) is driven to the lower end of the reducer (8); the lower end of the central shaft (2) extends downward and beyond the second housing (13); the lower end of the central shaft (2) is connected to the upper end of the reducer (8).
5. The rotary spray cleaning device according to claim 4, characterized in that: It also includes a reducer housing (81); the reducer (8) is rotatably disposed inside the reducer housing (81); the upper end of the reducer housing (81) is fixedly connected to the lower end of the second housing (13); a second skeleton oil seal (82) is also provided between the inner wall of the lower end of the second housing (13) and the outer peripheral wall of the central shaft (2).
6. The rotary spray cleaning device according to claim 1, characterized in that: The spray support (5) includes a main support (51) and a connecting support (52); the connecting support (52) is vertically located on the lower center of the main support (51); the connecting support (52) is connected to the upper end of the central shaft (2); the liquid outlet direction of the nozzle (6) is perpendicular to the length direction of the main support (51).
7. The rotary spray cleaning device according to claim 6, characterized in that: Several nozzles (6) are arranged sequentially and parallel to each other along the length of the main support (51); among the several nozzles (6), one nozzle (6) is located at the top center of the main support (51), and the remaining nozzles (6) are symmetrically arranged on the left and right sides of the top of the main support (51).
8. The rotary spray cleaning device according to claim 7, characterized in that: Among the several nozzles (6) located on the left or right side of the main support (51), the distance between any two adjacent nozzles (6) is equal.
9. The rotary spray cleaning device according to claim 6, characterized in that: The connecting bracket (52) has a first channel communicating with the fluid outlet hole (22) of the central shaft (2); the main bracket (51) has a second channel communicating with the first channel and the interior of several nozzles (6); the first channel and the second channel together form a spray channel.
10. The rotary spray cleaning device according to claim 9, characterized in that: The upper end of the central shaft (2) is provided with a first external thread; the lower end of the connecting bracket (52) is provided with a first internal thread that mates with the central shaft (2); the threading direction of the first internal thread is consistent with the rotation direction of the main bracket (51).