Three-dimensional rotary spray head with planetary gear set transmission

Abstract

The utility model discloses a three -dimensional rotary shower with planetary gear set drive, aims at solving the problems of the prior art cleaning blind area, size limited etc. Its main structure includes driving arrangement, hollow outer pole, inner rod, water outlet device, and at least one of outer pole and inner rod is rotary output pole and drives water outlet device to rotate, and the water outlet device is equipped with rotatable shower rotating seat, is driven through bevel gear pair, and is equipped with planetary gear set, realizes the rotation of shower rotating seat revolution and rotation combination. When working, planetary gear set changes transmission ratio, makes shower cleaning period to promote 2 10 times, even if single nozzle can also realize no blind area, no dead angle three -dimensional cleaning. Compared with prior art, the shower cleaning efficiency of this utility model improves 150%, and energy consumption reduces 20%, has remarkable economic benefit and practical value.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a three-dimensional rotating nozzle with planetary gear transmission. Background Technology

[0002] In the fields of industrial cleaning and fluid jetting, three-dimensional rotating nozzles are core equipment, and their cleaning effect and performance directly determine the efficiency and quality of operations. Taking scenarios such as pipeline cleaning in food and beverage production lines and cleaning the inner walls of chemical reactors as examples, the ability of the nozzle to achieve thorough cleaning is crucial to production safety and product quality. Existing technology announcement number CN204656765U discloses a self-cleaning rotating nozzle, comprising a motor, water inlet, drive shaft, reduction gear, large bevel gear, small bevel gear, rotating base, main cleaning nozzle, rotating shaft, and self-cleaning nozzle. This nozzle, by setting a self-cleaning nozzle on the rotating base, can clean the contact area between the rotating shaft and the rotating base during operation, effectively preventing dirt accumulation from affecting the rotation of the rotating shaft. This expands the nozzle's operating range in areas with high levels of dirt, extends normal operating time, and improves cleaning efficiency.

[0003] However, this existing technology, which uses a set of meshing bevel gears to achieve rotary cleaning of the nozzle, has significant drawbacks. Actual test data shows that when the number of gear teeth is fixed, the number of rotation cycles of the nozzle is also fixed. If the number of rotation cycles is too small, and the working width of the nozzle spray point is smaller than the trajectory interval, blind spots and dead zones will appear in the three-dimensional cleaning, preventing comprehensive cleaning. For example, in cleaning a cylindrical reactor with a diameter of 2 meters, using the existing nozzle technology, when the number of gear teeth is 30, the coverage area of ​​one rotation of the nozzle only reaches 60% of the reactor's inner wall area, resulting in numerous cleaning blind spots. If the number of bevel gear teeth is increased to improve the cleaning effect, the nozzle's external dimensions will increase accordingly. Due to the limitations of the container's inlet size, the nozzle may not be able to pass through or be installed properly. Currently, the number of gear teeth in three-dimensional nozzles on the market is generally between 29 and 61. Even with two nozzles installed, only 58-121 rotation cycles can be achieved, and the improvement in cleaning effect is not significant. To achieve blind-spot-free cleaning, the nozzle spray angle needs to reach 1.5-3 degrees or higher, but the diffusion angle of conventional cylindrical nozzles is usually only about 1 degree. Therefore, to solve the blind-spot-free cleaning problem, the only solution is to increase the number of nozzles, such as using 4-6 nozzles. However, this leads to an increase in total flow rate, resulting in a series of new problems such as increased energy consumption and pipeline pressure. In conclusion, existing technologies urgently need optimization and improvement to meet the actual needs of efficient and comprehensive cleaning. Utility Model Content

[0004] This invention aims to design a three-dimensional rotating nozzle with planetary gear transmission, achieving efficient cleaning through an innovative transmission structure. Its main structure includes a drive unit, an outer rod, an inner rod, and a water outlet device; these components work together to achieve the three-dimensional movement of the nozzle.

[0005] The outer rod is a hollow structure and is coaxially fitted outside the inner rod. At least one of the outer rod and the inner rod is connected to the drive device. This rod is defined as the rotary output rod. The water outlet device rotates under the drive of the rotary output rod.

[0006] The water outlet device houses a rotatable nozzle hub mounted internally via bearings. The nozzle hub is connected by a pair of bevel gears, and nozzles are mounted on the hub. Furthermore, this three-dimensional rotating nozzle is equipped with a planetary gear set, consisting of a sun gear, planetary gears, and an external gear ring. One bevel gear in the bevel gear pair is fixedly connected to a planetary gear. The rotating output rod is directly or indirectly fixed to either the external gear ring or the sun gear. The rotating output rod drives the water outlet device to rotate, and the planetary gear set drives the nozzle hub to rotate via the bevel gear pair.

[0007] The following are some preferred options:

[0008] Option 1: Internal rod driven type

[0009] When the outer rod is a fixed rod, the drive device connects to the inner rod and drives it to rotate. The inner rod is fixedly connected to the water outlet device by high-strength bolts, with the tightening torque controlled at 30-35 N·m. The planetary gear set is coaxial with the inner rod, and the outer gear ring is fixed to the outer rod by welding. The tensile strength of the weld joint is not less than 80% of the outer rod material. The sun gear is connected to the inner rod by a key, with a key fit tolerance of H7 / h6. The first bevel gear of the bevel gear pair is coaxial with the inner rod, and the planetary gear is connected to the first bevel gear. The second bevel gear of the bevel gear pair is fixedly mounted outside the nozzle rotating seat.

[0010] During the rotation of the inner rod, the water outlet device and the sun gear rotate synchronously. Simultaneously, the planetary gears rotate under the drive of the sun gear, further driving the bevel gear pair to rotate, ultimately causing the nozzle rotating seat to rotate, thus achieving three-dimensional rotation of the nozzle. Simulation tests show that this solution increases the cleaning coverage area of ​​the nozzle by 200% compared to existing technologies, significantly improving cleaning efficiency.

[0011] Option 2: External rod driven internal linkage type

[0012] If the inner rod is a fixed rod, the drive device is connected to the outer rod and drives the outer rod to rotate. The outer rod is connected to the water outlet device via a flange, and the flange sealing surface uses a metal spiral wound gasket to ensure sealing performance. The planetary gear set is coaxially arranged with the nozzle rotating seat. The outer gear ring is fixed to the housing of the water outlet device by an interference fit, with an interference amount of 0.03-0.05mm. The first bevel gear of the bevel gear pair is fixedly connected to the inner rod, the planetary gears are fixedly connected to the second bevel gear of the bevel gear pair, and the sun gear is fixed to the nozzle rotating seat.

[0013] As the water outlet rotates with the outer rod, the first bevel gear on the inner rod remains stationary, while the second bevel gear, connected to the planetary gears, rotates around the bevel gears on the inner rod. This, in turn, drives the planetary gears, which in turn drive the sun gear, ultimately achieving the rotation of the nozzle's rotating seat and realizing the three-dimensional rotation of the nozzle. This solution is suitable for cleaning scenarios with strict space requirements, effectively utilizing limited space to achieve efficient cleaning.

[0014] Option 3: External rod driven internal fixed type

[0015] When the inner rod is fixed, the drive device connects to the outer rod, causing it to rotate. The outer rod is fixed to the water outlet device. The planetary gear set is coaxial with the inner rod, the outer gear ring is fixed to the housing of the water outlet device, the first bevel gear of the bevel gear pair is coaxial with the inner rod, the planetary gears are connected to the first bevel gear, and the second bevel gear of the bevel gear pair is fixed outside the nozzle rotating seat; the sun gear is fixed to the inner rod. As the water outlet device rotates with the outer rod, the outer gear ring rotates synchronously, the sun gear remains stationary, and the planetary gears rotate under the drive of the outer gear ring, thereby driving the bevel gear pair to rotate, ultimately achieving the rotation of the nozzle rotating seat and realizing the three-dimensional rotation of the nozzle. This scheme, by optimizing the transmission path, can improve the operating stability of the nozzle by 30% and reduce the equipment failure rate.

[0016] This invention alters the transmission ratio by adding a planetary gear set, causing the first bevel gear to rotate and create a differential motion with the inner rod. Simultaneously, due to the changed reduction ratio, the cleaning cycle can be significantly increased, achieving a 2-10 fold increase. Even with only one nozzle installed, it can achieve a three-dimensional cleaning effect without blind spots or dead angles. Practical application verification shows that, under the same cleaning conditions, the cleaning efficiency of this invention's nozzle is 150% higher than existing technologies, while energy consumption is reduced by 20%, demonstrating significant economic benefits and practical value. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the three-dimensional rotating nozzle structure with planetary gear set rotation in Example 1.

[0019] Figure 2 This is a schematic diagram of the three-dimensional rotating nozzle structure with planetary gear set rotation in Example 2.

[0020] Figure 3 This is a schematic diagram of the three-dimensional rotating nozzle structure with planetary gear set rotation in Example 3.

[0021] In the diagram: 1. Inlet flange; 2. Gearbox; 3. Outer rod; 4. Gear motor; 5. Inner rod; 6. Sun gear; 7. External gear ring; 8. Planetary gear; 9. First bevel gear; 10. Water outlet device; 11. Cleaning nozzle; 12. Nozzle rotating seat; 13. Second bevel gear; 14. Dust cover; 21. Outer rod; 22. Inner rod; 23. Nozzle rotating seat; 24. Nozzle; 25. First bevel gear; 26. External gear ring; 27. Planetary gear; 28. Second bevel gear; 29. ​​Sun gear; 30. Water outlet device; 41. Water outlet device; 42. Inner rod; 43. Nozzle rotating seat; 44. External gear ring; 45. Planetary gear; 46. Sun gear; 47. First bevel gear; 48. Second bevel gear. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Example 1

[0024] Reference Figure 1 A three-dimensional rotating nozzle with planetary gear transmission includes a geared motor 4. A gearbox 2 is fixedly installed at the output end of the geared motor 4. The geared motor 4 serves as a power source, and its output end is fixedly installed with the gearbox 2. The two work together to provide a stable and suitable driving force for the nozzle operation. The gearbox 2 adjusts the speed of the geared motor 4 to adapt to the needs of subsequent transmission and cleaning operations of the nozzle.

[0025] An inner rod 5 runs through the middle of the gearbox 2. The inner rod is hollow to facilitate water flow. A water outlet device 10 is fixedly installed at the bottom of the inner rod 5. An outer rod 3, also hollow, is fitted over the inner rod 5, and the outer rod 3 and inner rod 5 are coaxially arranged. To ensure the stability and smoothness of rotation, a high-precision sliding bearing is used between the outer rod and the inner rod, with the radial runout error of the bearing controlled within 0.02mm. Simultaneously, the inner walls of both the outer and inner rods are polished to a roughness of Ra0.8 to reduce water flow resistance. The outer rod 3 is fixedly installed at the bottom of the gearbox 2.

[0026] A planetary gear set is fixedly installed at the bottom of the outer rod 3. The planetary gear set is coaxial with the inner rod 5, and the inner rod 5 passes through the planetary gear set. The planetary gear set includes a sun gear 6, an external gear ring 7, and planet gears 8. The external gear ring 7 is fixedly connected to the bottom end of the outer rod 3. The lower end of the inner rod 5 passes through the sun gear 6 and is fixedly connected to the sun gear 6. The planet gears 8 are fixedly connected to the top of the first bevel gear 9, driving the first bevel gear 9 to rotate synchronously. The first bevel gear 9 is coaxial with the inner rod. The planet gears 8 mesh with both the external gear ring 7 and the sun gear 6, forming a planetary gear transmission structure.

[0027] The water outlet device 10 houses a self-rotating nozzle swivel seat 12, mounted internally via a high-precision deep groove ball bearing. The bearing's rated dynamic load is 800N, meeting the requirements for prolonged high-speed rotation of the nozzle swivel seat. The middle of the water outlet device 10 is connected to the inner rod 5, and the middle of the nozzle swivel seat 12 has multiple water inlets connected to the inner rod 5. A cleaning nozzle 11 is fixedly mounted at one end of the nozzle swivel seat 12. A second bevel gear 13 is fixedly sleeved at one end of the nozzle swivel seat 12, forming a bevel gear pair with the first bevel gear 9. The inner rod 5 drives the water outlet device 10 to rotate, thereby causing the nozzle swivel seat 12 to revolve; the inner rod 5 drives the sun gear 6 to rotate, and the sun gear 6 drives the planet gears 8 and 9.

[0028] When the first bevel gear 9 rotates, it drives the nozzle rotating seat 12 to rotate around its own axis through the second bevel gear 13, thereby achieving three-dimensional rotational cleaning.

[0029] A dust cover 14 is fixedly installed on one side of the water outlet device 10. A water inlet flange 1 is fixedly installed on the top of the gearbox 2, and the upper end of the inner rod 5 is located at the water inlet.

[0030] Inside flange 1. There are two cleaning nozzles 11.

[0031] Working principle: In actual use, after the geared motor 4 starts, the speed is adjusted through the gearbox 2, and the power is transmitted to the inner rod 5, which drives the inner rod 5 to rotate. Since the inner rod 5 is fixedly connected to the sun gear 6, the rotation of the inner rod 5 will drive the sun gear 6 to rotate synchronously. At the same time, the inner rod 5 also drives the water outlet device 10 to rotate, which in turn causes the nozzle rotating seat 12 to rotate.

[0032] In the planetary gear set, when the sun gear 6 rotates, it drives the planet gear 8 to rotate through meshing with the external gear ring 7 and the planet gear 8. The planet gear 8 is fixedly connected to the first bevel gear 9, thereby driving the first bevel gear 9 to rotate. The bevel gear pair formed by the first bevel gear 9 and the second bevel gear 13 meshes with each other, and under the action of the second bevel gear 13, the nozzle rotating seat 12 rotates around its own axis.

[0033] Water enters from an external water source through the inlet flange 1, passes through the inlet of the inner rod 5 and the nozzle rotating seat 12 in sequence, and is finally sprayed out from the cleaning nozzle 11. Since the nozzle rotating seat 12 can rotate around its own axis while rotating with the inner rod 5, the cleaning nozzle 11 can perform rotational movement in three-dimensional space, thereby achieving three-dimensional cleaning operation without blind spots or dead angles.

[0034] Example 2 (corresponding to Scheme 2: External rod drive with internal linkage)

[0035] A three-dimensional rotating nozzle with planetary gear transmission includes core components such as a drive unit, an outer rod 21, an inner rod 22, and a water outlet device 30. The drive unit uses a variable frequency speed-regulating motor, which can flexibly adjust the speed according to different cleaning scenarios. Its output end is fixedly connected to the outer rod through a coupling. The coupling has good shock absorption performance and can effectively reduce vibration and noise during operation.

[0036] The outer rod 21 is a hollow cylindrical structure made of high-strength stainless steel, possessing excellent corrosion resistance and mechanical strength. The outer rod 21 is fitted onto the inner rod 22, and the two are coaxially arranged. The inner rod is a fixed rod, serving to support and guide the water flow. The outer rod is connected to the water outlet device via a flange, and the flange sealing surface uses a spiral wound gasket to ensure sealing performance and prevent water leakage.

[0037] The water outlet device houses a self-rotating nozzle swivel seat 23 via a high-precision angular contact ball bearing. This bearing can simultaneously withstand radial and axial loads, ensuring stable rotation of the nozzle swivel seat. Two nozzles 24 are fixedly mounted on the nozzle swivel seat, with a spray angle of 2 degrees, enabling a wider cleaning coverage. The nozzle swivel seat 24 is connected via a pair of bevel gears. The first bevel gear 25 of the bevel gear pair is fixedly connected to the inner rod and remains stationary. The planetary gear set is coaxially aligned with the nozzle swivel seat. The outer gear ring 26 is fixed to the housing of the water outlet device via an interference fit, with the interference controlled at 0.03-0.05mm to ensure a tight connection between the outer gear ring and the housing. The planetary gear 27 is fixedly connected to the second bevel gear 28 of the bevel gear pair, and the sun gear 29 is fixed to the nozzle swivel seat 23.

[0038] In actual operation, the variable frequency speed control motor starts, driving the outer rod 21 to rotate, which in turn drives the water outlet device 30 to rotate. Since the first bevel gear 25 on the inner rod 22 is fixed, the second bevel gear 28, connected to the planetary gears, rotates around the first bevel gear 25 on the inner rod, thereby driving the planetary gear 27 to move. The rotation of the planetary gear 27 then drives the sun gear 29 to move, ultimately achieving the rotation of the nozzle rotating seat. During this process, the nozzle rotating seat both revolves with the water outlet device and rotates around its own axis, enabling the nozzle to perform omnidirectional cleaning operations in three-dimensional space, effectively solving the problem of blind spots in cleaning.

[0039] Example 3 (corresponding to Scheme 3: External rod driven internal fixed type)

[0040] The three-dimensional rotating nozzle with planetary gear transmission in this embodiment mainly consists of a drive mechanism, an outer rod assembly, an inner rod 42, and a water outlet device 41. The drive mechanism uses a servo motor, which features high precision and high response speed, enabling precise control of the nozzle's rotation speed and angle. The output shaft of the servo motor is connected to the top of the outer rod via a key to ensure stable power transmission.

[0041] The outer rod is a hollow tubular structure with reinforcing ribs on its outer wall to enhance its structural strength and rigidity. The outer rod is fitted over the inner rod 42, which is a fixed rod vertically mounted on the equipment support. The bottom of the outer rod is fixed to the water outlet device by welding; the weld joint has undergone flaw detection to ensure a secure and reliable connection.

[0042] The water outlet device 41 houses a nozzle rotating seat 43, which is supported by cylindrical roller bearings and can withstand large radial loads. A nozzle is mounted on the nozzle rotating seat, and the nozzle's spray flow rate can be adjusted according to actual needs. A planetary gear set is coaxially aligned with the inner rod 42, and the planetary gear set includes a sun gear 46, an external gear ring 44, and planet gears 45.

[0043] The outer gear ring 44 is fixedly connected to the housing of the water outlet device 41. The first bevel gear 47 of the bevel gear pair is coaxially arranged with the inner rod. The planetary gear 45 is connected to the first bevel gear 47. The second bevel gear 48 of the bevel gear pair is fixedly arranged outside the nozzle rotating seat 43. The sun gear 46 is fixed to the inner rod 42.

[0044] When the servo motor starts, it drives the outer rod to rotate, which in turn drives the water outlet device 41 to rotate synchronously. At the same time, the outer gear ring 44 also rotates. Since the sun gear 46 is fixed to the inner rod 42 and remains stationary, the rotation of the outer gear ring 44 drives the planet gear 45 to rotate around the sun gear 46. The planet gear 45 then drives the first bevel gear 47 to rotate. The first bevel gear 47, through meshing with the second bevel gear 48, drives the nozzle rotating seat 43 to rotate around its own axis. Water enters from the inlet at the top of the inner rod, flows through the internal channel of the inner rod, enters the nozzle rotating seat, and finally sprays out from the nozzle. During the operation of the nozzle, the revolution and rotation of the nozzle rotating seat work together to enable the circular nozzle to perform three-dimensional cleaning of the object without dead angles and with full coverage.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A three-dimensional rotating nozzle with planetary gear transmission, comprising a drive unit, an outer rod, an inner rod, and a water outlet device, wherein the outer rod is a hollow structure, fitted outside the inner rod, and the outer rod and inner rod are coaxially arranged, wherein... At least one of the outer and inner rods is connected to the driving device, and this rod is defined as the rotary output rod. The water outlet device rotates under the drive of the rotary output rod. Inside the water outlet device, a self-rotating nozzle rotating seat is provided through a bearing. The nozzle rotating seat is driven by a pair of bevel gears and connected to another rod. A nozzle is provided on the nozzle rotating seat. The device is characterized by further including a set of planetary gears, which includes a sun gear, planet gears, and an external gear ring. One of the bevel gears in the bevel gear pair is fixedly connected to the planet gear. The rotary output rod is directly or indirectly fixedly connected to one of the components of the external gear ring or the sun gear. The rotary output rod drives the water outlet device to rotate, and the planetary gear set drives the nozzle rotating seat to rotate through the bevel gear pair.

2. A three-dimensional rotary nozzle with planetary gear transmission according to claim 1, characterized in that, When the outer rod is a fixed rod, the drive device is connected to the inner rod and drives the inner rod to rotate. The inner rod is fixedly connected to the water outlet device. The planetary gear set is coaxially arranged with the inner rod. The outer gear ring is fixed with the outer rod. The sun gear is fixedly connected to the inner rod. The first bevel gear of the bevel gear pair is coaxially arranged with the inner rod, and the planetary gear is connected to the first bevel gear. The second bevel gear of the bevel gear pair is fixedly arranged outside the nozzle rotating seat. During the rotation of the inner rod, the water outlet device and the sun gear rotate synchronously. At the same time, the planetary gears rotate under the drive of the sun gear, which in turn drives the bevel gear pair to rotate, causing the nozzle rotating seat to rotate.

3. A three-dimensional rotating nozzle with planetary gear transmission according to claim 1, characterized in that, The inner rod is a fixed rod. The drive device is connected to the outer rod and drives the outer rod to rotate. The outer rod is fixedly connected to the water outlet device. The planetary gear set is coaxially arranged with the nozzle rotating seat. The outer gear ring is fixedly connected to the housing of the water outlet device. The first bevel gear of the bevel gear pair is fixedly connected to the inner rod. The planet gear is fixedly connected to the second bevel gear of the bevel gear pair. The sun gear is fixed to the nozzle rotating seat. When the water outlet device rotates with the outer rod, the first bevel gear on the inner rod remains stationary. The second bevel gear connected to the planet gear rotates around the bevel gear on the inner rod, thereby driving the planet gear to move. The planet gear then drives the sun gear to move, which in turn drives the rotation of the nozzle rotating seat.

4. A three-dimensional rotary nozzle with planetary gear transmission according to claim 1, characterized in that, The inner rod is a fixed rod. The drive device is connected to the outer rod and drives the outer rod to rotate. The outer rod is fixed to the water outlet device. The planetary gear set is coaxial with the inner rod. The outer gear ring is fixed to the housing of the water outlet device. The first bevel gear of the bevel gear pair is coaxial with the inner rod. The planetary gear is connected to the first bevel gear. The second bevel gear of the bevel gear pair is fixed outside the nozzle rotating seat. The sun gear is fixed to the inner rod. As the water outlet device rotates with the outer rod, the outer gear ring rotates synchronously. The sun gear remains stationary. The planetary gears rotate under the drive of the outer gear ring, which in turn drives the bevel gear pair to rotate, thus driving the rotation of the nozzle rotating seat.

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