Four-stage speed reduction rotary spray head

Abstract

The utility model belongs to the technical field of rotary sprayers, and particularly relates to a four-stage speed reduction rotary sprayer which comprises a rotary nozzle assembly, a shell, a rotary driving assembly and a water inlet connector, the rotary driving assembly is located in the shell, the rotary nozzle assembly is connected with the output end of the rotary driving assembly and rotationally arranged at the upper end of the shell, and the water inlet connector is connected with the rotary nozzle assembly. The water inlet connector is connected with the lower end of the shell, a water inlet channel is reserved between the shell and the rotary driving assembly, a water inlet gap is reserved between the rotary driving assembly and the rotary nozzle assembly, and the water inlet gap is communicated with the water inlet channel. Liquid enters from the water inlet connector and then is sprayed out from the rotary nozzle assembly through the water inlet channel and the water inlet gap in sequence. The four-stage speed reduction rotary nozzle is reasonable in structure, and the instantaneous water pressure of a water pipe entering the rotary nozzle can be properly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of rotary nozzle, especially a four-stage deceleration rotary nozzle. BACKGROUND

[0002] When carrying out garden construction, irrigating plants is an indispensable step, and at present, simple water spraying devices are mostly used for irrigation in gardens. In this regard, rotary nozzles gradually appear on the market, which can spray water on plants through rotation.

[0003] For example, a mechanical rotary nozzle disclosed in Chinese Patent No. CN217288872U, wherein the shell comprises an outer shell and a ring cover mounted on the upper opening of the outer shell, the gear housing is arranged on part of the inner wall of the outer shell, and the outer shell surrounds the gear housing to form a semicircular flow passage therebetween. The gear set is pivotally connected to the gear housing through a rotating shaft, and the water wheel is drivingly connected to the input gear of the gear set through a rotating shaft. The rotary connection mechanism is rotatably arranged in the gear housing, the output gear of the gear set is drivingly connected to the rotary connection mechanism, and the rotary connection mechanism is fixedly connected to the nozzle mechanism. Thus, the water wheel is drivingly connected to the rotary connection mechanism and the nozzle mechanism through the gear set, so that the nozzle mechanism can rotate, and the nozzle sprays more uniformly while rotating.

[0004] The above technical solution has at least the following defects: the rotary nozzle needs to be connected with a water pipe, and the instantaneous high-pressure water flow in the water pipe directly acts on the water wheel, causing the water wheel to rotate at a high speed and exerting a large driving pressure on the gear set, which may damage the gear set. That is, the rotary nozzle cannot effectively adjust the water inlet pressure, which may easily damage the nozzle and ultimately affect the irrigation effect. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a four-stage deceleration rotary nozzle with a reasonable structure, which can appropriately reduce the instantaneous water pressure of the water pipe entering the rotary nozzle.

[0006] The utility model achieves the above-mentioned purpose in the following way:

[0007] A four-stage deceleration rotary nozzle comprises a rotary nozzle assembly, a shell, a rotary drive assembly, and a water inlet connector. The rotary drive assembly is located in the shell, the rotary nozzle assembly is connected to the output end of the rotary drive assembly, and is rotatably arranged at the upper end of the shell. The water inlet connector is connected to the lower end of the shell. The shell and the rotary drive assembly are connected by a water inlet passage, and the rotary drive assembly and the rotary nozzle assembly are connected by a water inlet gap. The water inlet gap and the water inlet passage are connected in series. Liquid enters the water inlet connector, passes through the water inlet passage and the water inlet gap in sequence, and is sprayed from the rotary nozzle assembly.

[0008] In the four-stage speed reduction rotary nozzle, the rotary driving assembly comprises a four-stage planetary gear speed reduction mechanism and a rotary impeller, the rotary impeller is connected with a power input end of the four-stage planetary gear speed reduction mechanism, a power output end of the four-stage planetary gear speed reduction mechanism is connected with the rotary nozzle assembly, and the rotary nozzle assembly is driven to rotate.

[0009] In the four-stage speed reduction rotary nozzle, the four-stage planetary gear speed reduction mechanism is provided with a plurality of elastic clamping strips on the outer side, the lower end of the elastic clamping strip is provided with a limiting cone block, and a limiting groove for facilitating the insertion of the limiting cone block is arranged between the water inlet connector and the shell.

[0010] In the four-stage speed reduction rotary nozzle, the shell is provided with a blocking strip.

[0011] In the four-stage speed reduction rotary nozzle, the water inlet connector and the shell are connected with each other through a threaded connection mode, the middle end of the water inlet connector is provided with a liquid guide piece, and the liquid guide piece is annularly provided with a plurality of guide holes.

[0012] In the four-stage speed reduction rotary nozzle, the side of the liquid guide piece facing the rotary impeller is provided with a water collecting ring, and the inner diameter of the water collecting ring is greater than or equal to the outer diameter of the rotary impeller.

[0013] In the four-stage speed reduction rotary nozzle, a filter cover is arranged in the water inlet connector, and a pressure reducing device is further arranged at the lower end of the water inlet connector, the pressure reducing device comprises a connecting sleeve, a support, a valve rod and a valve block, the support is located at the middle end of the connecting sleeve, the valve block is fixed at the upper end of the valve rod, the valve rod is arranged on the support, the valve block is arranged close to the filter cover, a water inlet gap is left between the support and the connecting sleeve, a magnetic member one is fixed at the lower end of the valve rod, a magnetic member two repelling the magnetic member one is arranged on the side of the support away from the filter cover, and the valve block is always tightly attached to the support under the cooperation of the magnetic member one and the magnetic member two.

[0014] In the four-stage speed reduction rotary nozzle, the lower end of the connecting sleeve is provided with an outer connecting thread.

[0015] In the four-stage speed reduction rotary nozzle, the rotary nozzle assembly comprises a shell, a rotary flow guide and a flow distribution sleeve, the upper end of the rotary flow guide is connected with the flow distribution sleeve, the shell covers the outer side of the flow distribution sleeve, the flow distribution sleeve is provided with a main water outlet nozzle and an auxiliary water outlet nozzle, the shell is provided with a through hole for the main water outlet nozzle to extend out of, and the upper end of the shell is provided with four flow distribution grooves located directly above the auxiliary water outlet nozzle.

[0016] In the four-stage speed reduction rotary nozzle, the inner side of the rotary flow guide is provided with a plurality of guide strips.

[0017] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0018] This utility model connects the rotating nozzle assembly, the housing, the rotating drive assembly, and the water inlet connector. The liquid enters from the water inlet structure, and the liquid drives the rotating drive assembly to rotate the rotating nozzle assembly. After entering from the water inlet structure, the liquid enters the water inlet channel and the water inlet gap in sequence, and finally sprays out from the rotating nozzle assembly. No other driving method is required.

[0019] This utility model uses a four-stage planetary reduction mechanism to reduce the rotation speed of the rotating nozzle assembly as much as possible. The elastic retaining strip on the outside of the four-stage planetary reduction mechanism can ensure that the four-stage planetary reduction mechanism is inside the housing. The blocking strip inside the housing is to prevent the four-stage planetary reduction mechanism from being rotated. The blocking strip works in conjunction with the elastic retaining strip.

[0020] The liquid guide plate and guide hole designed in this utility model are intended to make the liquid flow out at an angle when exiting through the guide hole. The guide hole allows the liquid to rotate inside, further driving the rotating impeller to rotate.

[0021] The present invention includes a pressure reducing device at the lower end of the water inlet connector to reduce the instantaneous pressure during water intake and prevent excessive pressure from damaging the four-stage planetary reduction mechanism or the rotating impeller. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is one of the sectional views of this utility model;

[0024] Figure 3 This is the second sectional view of this utility model;

[0025] Figure 4 This is an enlarged view of point A of this utility model;

[0026] Figure 5 This is an exploded view of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the housing and the rotary drive assembly of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the water inlet connector of this utility model;

[0029] Figure 8 This is a structural schematic diagram of the pressure-reducing device of this utility model.

[0030] The meaning of the labels in the diagram:

[0031] 1. Rotary nozzle assembly; 11. Housing; 12. Rotary guide component; 121. Guide bar; 13. Divider sleeve; 131. Main outlet; 132. Secondary outlet; 133. Four-way diversion channel;

[0032] 2. Shell;

[0033] 3. Rotary drive assembly; 31. Four-stage planetary gear reduction mechanism; 32. Rotary impeller; 33. Elastic retaining strip; 34. Limiting cone block; 35. Limiting groove; 36. Blocking strip;

[0034] 4. Water inlet connector; 41. Liquid guide plate; 42. Guide hole; 43. Water collection ring; 44. Pressure reducing device; 440. Connecting sleeve; 441. Bracket; 442. Valve stem; 443. Valve block; 445. Magnetic component one; 446. Magnetic component two; 45. Filter cover;

[0035] 5. Water inlet channel; 6. Water inlet gap. Detailed Implementation

[0036] The present invention will be further described below with reference to specific embodiments:

[0037] like Figures 1-8 As shown: A four-stage deceleration rotary nozzle includes a rotary nozzle assembly 1, a housing 2, a rotary drive assembly 3, and a water inlet connector 4. The rotary drive assembly 3 is located inside the housing 2. The rotary nozzle assembly 1 is connected to the output end of the rotary drive assembly 3 and is rotatably disposed at the upper end of the housing 2. The water inlet connector 4 is connected to the lower end of the housing 2. A water inlet channel 5 is provided between the housing 2 and the rotary drive assembly 3. A water inlet gap 6 is provided between the rotary drive assembly 3 and the rotary nozzle assembly 1. The water inlet gap 6 is connected to the water inlet channel 5. After entering through the water inlet connector 4, the liquid passes through the water inlet channel 5 and the water inlet gap 6 in sequence and is sprayed out from the rotary nozzle assembly 1. The rotary nozzle assembly, housing, rotary drive assembly, and water inlet connector are interconnected. The liquid enters from the water inlet structure, drives the rotary drive assembly to rotate the rotary nozzle assembly, and after entering from the water inlet structure, the liquid enters the water inlet channel and the water inlet gap in sequence, and finally sprays out from the rotary nozzle assembly. No other driving method is required.

[0038] In the aforementioned four-stage reduction rotary nozzle, the rotary drive assembly 3 includes a four-stage planetary gear reduction mechanism 31 and a rotary impeller 32. The rotary impeller 32 is connected to the power input end of the four-stage planetary gear reduction mechanism 31, and the power output end of the four-stage planetary gear reduction mechanism 31 is connected to the rotary nozzle assembly 1 and is used to drive the rotary nozzle assembly 1 to rotate. Specifically, the four-stage planetary gear reduction mechanism is existing technology and will not be described in detail here. Several elastic retaining strips 33 are provided on the outer side of the four-stage planetary gear reduction mechanism 31. The lower end of the elastic retaining strips 33 is provided with a limiting cone block 34. A limiting groove 35 is provided between the water inlet connector 4 and the housing 2 to facilitate the insertion of the limiting cone block 34. The housing 2 is provided with a blocking strip 36. By reducing speed through the four-stage planetary reduction mechanism, the rotation speed of the rotary nozzle assembly can be reduced as much as possible. The elastic retaining strips on the outer side of the four-stage planetary reduction mechanism can ensure that the four-stage planetary reduction mechanism is inside the housing, and the blocking strips inside the housing are provided to prevent the four-stage planetary reduction mechanism from being rotated. The blocking strips work together with the elastic retaining strips.

[0039] In the aforementioned four-stage deceleration rotary nozzle, the water inlet connector 4 and the housing 2 are connected to each other by a threaded connection, and a liquid guide plate 41 is provided at the middle end of the water inlet connector 4. The liquid guide plate 41 is surrounded by several guide holes 42, and a water collecting ring 43 is provided on the side of the liquid guide plate 41 facing the rotating impeller 32. The inner diameter of the water collecting ring 43 is greater than or equal to the outer diameter of the rotating impeller 32. The liquid guide plate and guide holes are designed so that the liquid is inclined when it exits from the guide holes. With the help of the guide holes, the liquid can rotate inside and further drive the rotating impeller to rotate.

[0040] In the aforementioned four-stage deceleration rotary nozzle, a filter cover 45 is provided inside the water inlet connector 4, and a pressure reducing device 44 is also provided at the lower end of the water inlet connector 4. The pressure reducing device 44 includes a connecting sleeve 440, a bracket 441, a valve stem 442, and a valve block 443. The bracket 441 is located at the middle end of the connecting sleeve 440, and the valve block 443 is fixed to the upper end of the valve stem 442. The valve stem 442 passes through the bracket 441, and the valve block 443 is located close to the filter cover. A water inlet gap is left between the bracket 441 and the connecting sleeve 440. A magnetic component 445 is fixed to the lower end of the valve stem 442, and a pressure reducing device 443 is provided on the side of the bracket 441 away from the filter cover 45. A second magnetic component 446 is provided, which repels the first magnetic component 445. The valve block 443 is always tightly attached to the bracket 441 with the cooperation of the first magnetic component 445 and the second magnetic component 446. The pressure reducing device is provided to reduce the instantaneous pressure when water enters, so as to avoid damage to the four-stage planetary reduction mechanism or the rotating impeller due to excessive pressure. When the liquid enters the pressure reducing device, the water pressure will push the valve block towards the filter cover. The valve block reduces a certain amount of water pressure, and the filter cover will also reduce the water pressure. The liquid guide plate further buffers the flow, so that the water reaches the rotating impeller relatively smoothly. There is a water passage groove between the bracket and the connecting sleeve. The valve block will not completely seal the water passage groove, and there will be a certain gap between the two.

[0041] In the aforementioned four-stage deceleration rotary nozzle, the lower end of the connecting sleeve 440 is provided with an external connecting thread, which facilitates connection with a water pipe.

[0042] In the aforementioned four-stage deceleration rotary nozzle, the rotary nozzle assembly 1 includes a housing 11, a rotary guide 12, and a flow divider sleeve 13. The upper end of the rotary guide 12 is connected to the flow divider sleeve 13. The housing 11 covers the outer side of the flow divider sleeve 13, and the flow divider sleeve 13 is provided with a main water outlet 131 and a secondary water outlet 132. The housing 11 is provided with a through hole for the main water outlet 131 to extend out. The upper end of the housing 11 is provided with four flow divider grooves 133, which are located directly above the secondary water outlet 132. The inner side of the rotary guide 12 is provided with several guide strips 121. Specifically, the guide strips serve a guiding function and also strengthen the rotary guide. The groove angles of the four flow divider grooves are different. One set of two opposite flow divider grooves have the same angle, while the other set of opposite flow divider grooves have different angles. This can improve the coverage area of ​​the liquid spray.

[0043] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A four-stage deceleration rotary nozzle, characterized in that: The device includes a rotary nozzle assembly (1), a housing (2), a rotary drive assembly (3), and a water inlet connector (4). The rotary drive assembly (3) is located inside the housing (2). The rotary nozzle assembly (1) is connected to the output end of the rotary drive assembly (3) and is rotatably disposed at the upper end of the housing (2). The water inlet connector (4) is connected to the lower end of the housing (2). A water inlet channel (5) is provided between the housing (2) and the rotary drive assembly (3). A water inlet gap (6) is provided between the rotary drive assembly (3) and the rotary nozzle assembly (1). The water inlet gap (6) is connected to the water inlet channel (5). After entering through the water inlet connector (4), the liquid passes through the water inlet channel (5) and the water inlet gap (6) in sequence and is sprayed out from the rotary nozzle assembly (1).

2. The four-stage deceleration rotary nozzle according to claim 1, characterized in that: The rotary drive assembly (3) includes a four-stage planetary gear reduction mechanism (31) and a rotary impeller (32). The rotary impeller (32) is connected to the power input end of the four-stage planetary gear reduction mechanism (31), and the power output end of the four-stage planetary gear reduction mechanism (31) is connected to the rotary nozzle assembly (1) and is used to drive the rotary nozzle assembly (1) to rotate.

3. The four-stage deceleration rotary nozzle according to claim 2, characterized in that: The outer side of the four-stage planetary gear reduction mechanism (31) is provided with several elastic clips (33), and the lower end of the elastic clips (33) is provided with a limiting cone (34). A limiting groove (35) is provided between the water inlet connector (4) and the housing (2) to facilitate the insertion of the limiting cone (34).

4. The four-stage deceleration rotary nozzle according to claim 3, characterized in that: The housing (2) is provided with a blocking strip (36).

5. The four-stage deceleration rotary nozzle according to claim 2, 3, or 4, characterized in that: The water inlet connector (4) is connected to the housing (2) by a threaded connection, and a liquid guide plate (41) is provided at the middle end of the water inlet connector (4), and the liquid guide plate (41) is provided with a plurality of guide holes (42).

6. The four-stage deceleration rotary nozzle according to claim 5, characterized in that: The liquid guide plate (41) is provided with a water collection ring (43) on the side facing the rotating impeller (32), and the inner diameter of the water collection ring (43) is greater than or equal to the outer diameter of the rotating impeller (32).

7. The four-stage deceleration rotary nozzle according to claim 5, characterized in that: A filter cover (45) is provided inside the water inlet connector (4), and a pressure reducing device (44) is also provided at the lower end of the water inlet connector (4). The pressure reducing device (44) includes a connecting sleeve (440), a bracket (441), a valve stem (442), and a valve block (443). The bracket (441) is located at the middle end of the connecting sleeve (440), and the valve block (443) is fixed to the upper end of the valve stem (442). The valve stem (442) passes through the bracket (441), and the... The valve block (443) is positioned close to the filter cover. A water inlet gap is left between the bracket (441) and the connecting sleeve (440). A magnetic component (445) is fixed at the lower end of the valve stem (442). A magnetic component (446) that repels the magnetic component (445) is provided on the side of the bracket (441) away from the filter cover (45). The valve block (443) is always tightly attached to the bracket (441) with the cooperation of the magnetic component (445) and the magnetic component (446).

8. The four-stage deceleration rotary nozzle according to claim 7, characterized in that: The lower end of the connecting sleeve (440) is provided with an external connecting thread.

9. The four-stage deceleration rotary nozzle according to claim 2, 3, 4, 6, 7, or 8, characterized in that: The rotary nozzle assembly (1) includes a housing (11), a rotary guide (12), and a flow divider (13). The upper end of the rotary guide (12) is connected to the flow divider (13). The housing (11) covers the outer side of the flow divider (13), and the flow divider (13) is provided with a main water outlet (131) and a secondary water outlet (132). The housing (11) is provided with a through hole for the main water outlet (131) to extend out. The upper end of the housing (11) is provided with a four-way flow divider (133), which is located directly above the secondary water outlet (132).

10. The four-stage deceleration rotary nozzle according to claim 9, characterized in that: The inner side of the rotating guide (12) is provided with several guide strips (121).

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