A three-way ball valve, a swing-type sprayer, and a working method

Abstract

The application discloses a kind of three-way ball valve, swing-type sprayer and working method in the technical field of garden facilities, including mounting plate, three-way ball valve and spray pipe are respectively provided on mounting plate;Three-way ball valve includes water inlet, first water outlet and second water outlet;First water outlet is connected to one end of spray pipe by first water pipe, and second water outlet is connected to the other end of spray pipe by second water pipe;Water turbine engine is connected in series on second water pipe, and the mechanical output end of water turbine engine is connected to a swing driving mechanism after being decelerated by a speed reducer, and the output end of swing driving mechanism is connected to spray pipe for driving spray pipe reciprocating swing, the equipment of the present application is driven by water power, without power supply or manual operation, it can realize large-area spraying irrigation in space range, when actually used, three-way ball valve can be adjusted to quickly switch between off, swing spraying and fixed-angle spraying three working modes.

Description

Technical Field

[0001] This invention relates to the field of sprayer technology, specifically to a three-way ball valve, a swing sprayer, and its working method. Background Technology

[0002] A sprinkler is a watering tool used for dust suppression, irrigation in large forests and orchards, and also for routine maintenance of landscaping plants. To conserve water and prevent excessive irrigation, sprinklers are often designed with a swing-type structure. This means that nozzles are positioned in only one direction on the water pipe, but the pipe itself can swing and rotate to spray water back and forth within a certain angle, achieving intermittent spraying for area coverage.

[0003] In addition, researchers in the relevant technical field have successively developed and disclosed various durable mechanical spraying and irrigation devices. These include, for example, the swing-type sprayer (Chinese patent CN2618674Y). This device consists of a spray pipe supported by a support mechanism, with one end closed and the other connected to a hydraulic drive unit. The hydraulic drive unit contains a hydraulically driven gear reduction mechanism and a spray pipe swing angle control mechanism. The gear reduction drive housing drives the spray pipe to rotate slowly, and the swing angle control mechanism enables reversal and adjustment of the left and right swing angle of the spray pipe. This type of irrigation device can achieve reciprocating swing spraying within a fan-shaped space without electric drive or manual operation. However, it also has certain limitations in application scenarios. For example, the device's spraying start and stop must be controlled by switching the input water source on and off; after connection and startup, its swing and spraying functions start and stop synchronously, and it cannot be used for fixed-angle spraying alone.

[0004] Based on this, the present invention designs a three-way ball valve, a swing sprayer, and a working method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a three-way ball valve, a swing sprayer, and a working method to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the invention provides the following technical solution:

[0007] A three-way ball valve includes a valve seat (34) with a spherical valve cavity inside. The valve seat has an inlet, a first outlet and a second outlet that communicate with the spherical valve cavity on its peripheral wall. The inlet, the first outlet and the second outlet are at a 120° angle to each other. A ball valve core is provided inside the valve seat. A valve stem is connected to the top of the ball valve core. A valve core hole with two ends at a 120° angle is provided inside the ball valve core. The two ends of the valve core hole can be connected to any two of the inlet, the first outlet and the second outlet by switching the valve position.

[0008] Zinc tubes are detachably placed against the wall at both ends of the inner cavity of the valve core hole. The outer ends of the zinc tubes are fixed by a retaining spring embedded in the inner wall of the valve core hole. Two valve core maintenance holes are opened on the peripheral wall of the spherical valve cavity. The two valve core maintenance holes are at a 120° angle and are offset from the water inlet, the first water outlet and the second water outlet. A sealing plug is provided at the outer end of the valve core maintenance hole.

[0009] A swing sprayer, comprising the aforementioned three-way ball valve;

[0010] It also includes a mounting plate, on which the three-way ball valve and the spray pipe are respectively installed; the first water outlet is connected to one end of the spray pipe through a first water supply pipe, and the second water outlet is connected to the other end of the spray pipe through a second water supply pipe; a water turbine engine is connected in series on the second water supply pipe, and the mechanical output end of the water turbine engine is connected to a swing drive mechanism after being reduced in speed by a reducer. The output end of the swing drive mechanism is connected to the spray pipe to drive the spray pipe to swing back and forth.

[0011] As a preferred embodiment, the mounting plate is provided with a support foot at the bottom, and a pair of bearing seats are fixedly provided on the top surface of the mounting plate. The two ends of the spray pipe are rotatably mounted on the mounting plate through the bearing seats.

[0012] As a preferred embodiment, the spray pipe has a raised, protruding arc-shaped curved structure in the middle, and several high-pressure nozzles are embedded in the spray pipe wall at intervals along the length direction.

[0013] As a preferred embodiment, one-way valves are respectively connected in series on the end of the first water supply pipe and the second water supply pipe near the end of the spray pipe.

[0014] As a preferred embodiment, the water turbine engine includes a casing with its front and rear ends connected. An impeller and a wheel shaft are disposed inside the casing cavity. A slanted tube seat is connected to the rear end of the casing. A wheel shaft seat is disposed on the side wall of the slanted tube seat. The wheel shaft is rotatably mounted on the wheel shaft seat. The output end of the wheel shaft is connected to the reducer for transmission.

[0015] As a preferred embodiment, the swing drive mechanism includes a mounting housing, the output shaft of the reducer extends into the mounting housing and is connected to a crank, the end of the crank is movably connected to a connecting rod via a hinge pin a, the end of the connecting rod is movably connected to a push-pull rod via a hinge pin b, the push-pull rod is mounted on the inner wall of the mounting housing via a slide block, the push-pull rod slides along the slide block under the driving action of the connecting rod, a toothed row is provided on one side of the outer wall of the push-pull rod, one end of the spray pipe extends into the mounting housing and is connected to a gear, the gear meshes with the toothed row for transmission.

[0016] As a preferred embodiment, the gear is a clutch assembly structure, including an inner disc and an outer gear ring. The inner ring of the outer gear ring is provided with a stepped groove, and an annular pressure plate is provided on the opening side of the stepped groove. The inner disc is embedded between the stepped groove and the annular pressure plate. A threaded hole is opened on the outer side of the outer gear ring and a clutch screw is connected thereto. After the clutch screw is tightened, the outer gear ring and the inner disc are relatively stationary and rotate synchronously. An adjustment hole is provided on the mounting housing for adjusting the tightness of the clutch screw.

[0017] A method for operating an oscillating sprayer includes the following steps:

[0018] Connect the inlet of the three-way ball valve to the external high-pressure water pipe;

[0019] The initial orientation of the spray pipe is adjusted by the gear clutch combination structure;

[0020] The three working modes of the spray pipe can be adjusted and switched using a three-way ball valve.

[0021] As a preferred option, the three working modes of the spray pipe can be switched as follows:

[0022] When the spray pipe is idle: Adjust the three-way ball valve to connect the two ends of the valve core hole with the first and second water outlets;

[0023] When spraying directly at a fixed angle using the spray pipe: Adjust the three-way ball valve so that both ends of the valve core hole are connected to the water inlet and the first water outlet;

[0024] When spraying within the swing angle range of the spray pipe: adjust the three-way ball valve so that both ends of the valve core hole are connected to the inlet and the second outlet.

[0025] Compared with existing technologies, the beneficial effects of the invention are as follows:

[0026] This invention integrates a water turbine engine with a spray pipe, and the equipment operates using water power, requiring no power supply or manual operation, thus enabling large-area spraying and irrigation within a spatial range.

[0027] This invention uses a novel three-way ball valve to supply water. The output end of the three-way ball valve has two adjustable water sources, one for oscillating spraying and the other for fixed-angle spraying. In actual use, the three-way ball valve can be adjusted to quickly switch between three working modes: shut-off, oscillating spraying, and fixed-angle spraying.

[0028] This invention employs a novel three-way ball valve, in which a detachable zinc tube is installed inside the valve core bore. This zinc tube allows for convenient replacement and maintenance, ensuring that the valve core remains resistant to corrosion even after prolonged contact with trace amounts of corrosive water, thus guaranteeing the service life of the three-way ball valve. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the invention, 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 the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the three-way ball valve structure of the present invention;

[0031] Figure 2 This is a top view of the overall structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the front cross-section structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the water turbine engine of the present invention;

[0034] Figure 5 This is a schematic diagram of the swing drive mechanism of the present invention;

[0035] Figure 6 This is a schematic diagram of the gear clutch assembly structure of the present invention;

[0036] Figure 7-9 These are schematic diagrams of the three modes of spraying according to the present invention: fixed angle spraying, oscillating spraying, and shut-off. Detailed Implementation

[0037] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0038] Example 1

[0039] Please see Figure 1 The invention provides a technical solution:

[0040] A three-way ball valve 30 includes an inlet 31, a first outlet 32, and a second outlet 33, and a valve seat 34. The valve seat 34 has a spherical valve cavity inside. The inlet 31, the first outlet 32, and the second outlet 33 are respectively connected to the peripheral wall of the spherical valve cavity, and the inlet 31, the first outlet 32, and the second outlet 33 are arranged in a circumferential array at a 120° angle between each other. A ball valve core 35 is rotatably disposed in the spherical valve cavity. The ball valve core 35 has a valve core hole 36, which is a bent channel with two ends at a 120° angle. Both ends of the valve core hole 36 can be connected to any two of the inlet 31, the first outlet 32, and the second outlet 33. A valve stem 37 is connected to the top of the ball valve core 35, and the top of the valve stem 37 extends out of the valve seat 34. In actual adjustment and use, the ball valve core 35 is rotated by rotating the outer end of the valve stem 37. The adjustment stroke for switching between the two modes is 120°.

[0041] Furthermore, given that swing sprayers are often used for spraying and irrigation, and in order to save energy and reduce emissions, the water sources used may include, for example, industrial recycled water. Although the acidity index of purified recycled water is generally within the emission standards, it still contains trace amounts of acidic elements to varying degrees. The valve core of the three-way ball valve 30 is generally made of copper. Long-term contact with such water sources can easily cause corrosion of the valve core hole 36 or other blockages due to acid corrosion. Based on this, in this embodiment, zinc tubes 38 are detachably placed against the wall at both ends of the inner cavity of the valve core hole 36. The outer ends of the zinc tubes 38 are limited and fixed by snap rings 39 embedded in the inner wall of the end of the valve core hole 36. Two valve core maintenance holes 90 are opened on the peripheral wall of the spherical valve cavity. The two valve core maintenance holes 90 are at a 120° angle and are offset from the inlet 31, the first outlet 32 ​​and the second outlet 33. A sealing plug 41 is provided at the outer end of the valve core maintenance hole 90. Under normal use, for example, when acidic water flows through the valve core hole 36, compared to Made of copper, the zinc core is protected from corrosion by acidic elements in the water flow, which preferentially corrode the zinc metal. Once the zinc metal has corroded to a certain extent, the valve core can be screwed until the two ends of the valve core hole 36 are aligned with the valve core maintenance hole 90. After opening the sealing plug 41 and removing the snap ring 39, the zinc tube 38 can be quickly replaced. This structural design, which uses the zinc tube 38 as a consumable part and combines it with the specific internal structure design of the three-way ball valve for quick-release maintenance, ensures that the valve core is not easily corroded even after long-term contact with trace amounts of corrosive water, thus guaranteeing the service life of the three-way ball valve.

[0042] Example 2

[0043] Please see Figure 2-3 The invention provides a technical solution:

[0044] A swing sprayer includes a mounting plate 10, with legs 11 at the bottom of the mounting plate 10.

[0045] The mounting plate 10 is equipped with a three-way ball valve 30 and a spray pipe 20.

[0046] like Figure 2 As shown, a pair of bearing seats 12 are fixedly installed on the top surface of the mounting plate 10, and the two ends of the spray pipe 20 are rotatably installed on the mounting plate 10 through the bearing seats 12; the middle part of the spray pipe 20 is a raised and protruding arc-shaped curved structure, and several high-pressure nozzles 21 are embedded in the pipe wall along the length direction; each high-pressure nozzle 21 is distributed along the arc-shaped closed distribution, so that when the device sprays water, it covers a fan-shaped area and the spraying range is wider.

[0047] The first outlet 32 ​​of the three-way ball valve 30 is connected to one end of the spray pipe 20 via the first water supply pipe 40, and the second outlet 33 is connected to the other end of the spray pipe 20 via the second water supply pipe 50. One-way valves 45 are respectively connected in series on the first water supply pipe 40 and the second water supply pipe 50 near the end of the spray pipe 20. Specifically, when both ends of the valve core hole 36 are connected to the first outlet 32 ​​and the second outlet 33, the three-way ball valve 30 is in the closed state; when both ends of the valve core hole 36 are connected to the inlet 31 and the first outlet 32, the spray pipe 20 is in a fixed-angle direct spray state; when both ends of the valve core hole 36 are connected to the inlet 31 and the second outlet 33, the spray pipe 20 is in a spray state within its swing angle range.

[0048] A water turbine engine 60 is connected in series on the second water supply pipe 50. The mechanical output end of the water turbine engine 60 is connected to a swing drive mechanism 80 after being reduced in speed by a reducer 70. The output end of the swing drive mechanism 80 is connected to the spray pipe 20 to drive the spray pipe 20 to swing back and forth.

[0049] like Figure 4 As shown, the water turbine engine 60 includes a housing 61, which extends through both ends. An impeller 62 and a shaft 63 are housed within the housing 61. A slanted tube seat 64 is connected to the rear end of the housing 61. A shaft seat 65 is mounted on the side wall of the slanted tube seat 64, and the shaft 63 is rotatably mounted on the shaft seat 65. The output end of the shaft 63 is connected to a reducer 70. During actual operation, high-pressure water flows into the housing 61, driving the impeller 62 and shaft 63 to rotate. The rear end of the shaft 63 is connected to the reducer 70, indirectly driving the oscillating drive mechanism 80 to transmit water driving force. After driving the impeller 62, the high-pressure water flow is discharged from the slanted tube seat 64 and then enters the spray pipe 20 through the second water supply pipe 50 for spraying.

[0050] like Figure 5As shown, the swing drive mechanism 80 includes a mounting housing 81. The output shaft 71 of the reducer 70 extends into the mounting housing 81 and is connected to a crank 82. The end of the crank 82 is movably connected to a connecting rod 84 via a hinge pin a83. The end of the connecting rod 84 is movably connected to a push-pull rod 86 via a hinge pin b85. The push-pull rod 86 is mounted on the inner wall of the mounting housing 81 via a slide block 87. Under the driving action of the connecting rod 84, the push-pull rod 86 slides along the slide block 87. A toothed rack 88 is provided on one side of the outer wall of the push-pull rod 86. One end of the spray pipe 20 extends into the mounting housing 81 and is connected to a gear 89. The gear 89 meshes with the toothed rack 88. The transmission is as follows: In actual operation, the power output by the water turbine engine 60 is reduced and amplified by the reducer 70, and then the output shaft 71 of the reducer 70 drives the crank 82 to rotate. The crank 82 drives the push-pull rod 86 to reciprocate through the connecting rod 84, converting the rotational motion into a reciprocating translational motion. The gear 88 on the push-pull rod 86 meshes with the gear 89, further converting the reciprocating translational motion of the push-pull rod 86 into the reciprocating rotational motion of the gear 89, thus realizing the reciprocating swing of the spray pipe 20. This transforms the single-angle spraying of the spray pipe 20 into spatial three-dimensional spraying, further improving the spray coverage area.

[0051] As a further embodiment

[0052] When the device is used in the fixed angle spraying mode, the angle range of the high-pressure nozzle 21 depends on the orientation state at the end of the last swing spraying mode. If you want to adjust the orientation of the fixed angle high-pressure nozzle 21, you need to switch back to the swing spraying mode and switch back to the fixed angle spraying mode in time when the high-pressure nozzle 21 is close to the required adjustment position. This is not only cumbersome to operate, but also makes it difficult to adjust the angle accurately.

[0053] Therefore, in this embodiment, gear 89 is a clutch assembly structure, including an inner gear 891 and an outer gear ring 892. The inner ring of the outer gear ring 892 is provided with a stepped groove, and an annular pressure plate 893 is provided on the opening side of the stepped groove. The inner gear 891 is embedded between the stepped groove and the annular pressure plate 893. A threaded hole is opened on the outer side of the outer gear ring 892 and a clutch screw 894 is connected thereto. After the clutch screw 894 is tightened, the outer gear ring 892 and the inner gear 891 are relatively stationary and rotate synchronously. An adjustment hole 810 is provided on the mounting housing 81 for adjusting the tightness of the clutch screw 894. For ease of operation, the clutch screw 894 can also be... The outer end extends through the adjustment hole 810 and is designed as a butterfly-shaped hand-tightening structure. In this embodiment, the originally fixed gear 89 is designed as a combination structure that can be disengaged internally and externally. In the fixed angle spraying mode, since the swing drive mechanism 80 does not work, it will not cause adjustment interference. Therefore, the clutch screw 894 can be loosened manually, so that the inner wheel 891 and the outer gear ring 892 can rotate relative to each other. At this time, the orientation of the spray pipe 20 can be freely adjusted to the required angle. Then, the clutch screw 894 is tightened again to lock the angle, thereby realizing convenient and precise adjustment of the spraying range of the high-pressure nozzle 21 in the fixed angle spraying mode.

[0054] Example 3

[0055] Based on the aforementioned embodiments 1 and 2, this embodiment provides a method for operating a swing sprayer, including the following steps:

[0056] Connect the inlet 31 of the three-way ball valve 30 to an external high-pressure water pipe;

[0057] The initial orientation of the spray pipe 20 is adjusted by the clutch combination structure of gear 89;

[0058] The three working modes of the spray pipe 20 can be adjusted and switched by the three-way ball valve 30.

[0059] The three working modes can be switched as follows:

[0060] like Figure 9 As shown, when the spray pipe 20 is idle: adjust the three-way ball valve 30 so that both ends of the valve core hole 36 are connected to the first outlet 32 ​​and the second outlet 33; at this time, the external high-pressure water source is completely blocked by the three-way ball valve 30, and the equipment stops working.

[0061] like Figure 7As shown, when the spray pipe 20 sprays directly at a fixed angle: adjust the three-way ball valve 30 so that both ends of the valve core hole 36 are connected to the water inlet 31 and the first water outlet 32; at this time, the external high-pressure water source enters from the left end of the spray pipe 20 through the three-way ball valve 30 and further through the first water supply pipe 40, and is sprayed out from the high-pressure nozzle 21; in this mode, because the second water supply pipe 50 is blocked, spraying is carried out within a single fan-shaped area at a fixed angle; it is mainly suitable for application scenarios that require concentrated high-frequency irrigation.

[0062] like Figure 8 As shown, when the spray pipe 20 is spraying within the swing angle range: adjust the three-way ball valve 30 so that both ends of the valve core hole 36 are connected to the water inlet 31 and the second water outlet 33; at this time, the external high-pressure water source enters the water turbine engine 60 through the three-way ball valve 30 and further through the second water supply pipe 50, indirectly driving the swing drive mechanism 80 to drive the spray pipe 20 to swing back and forth. At the same time, the water discharged from the water turbine engine 60 enters from the right end of the spray pipe 20 and is sprayed out from the high-pressure nozzle 21; in this mode, because the first water supply pipe 40 is blocked, spraying is carried out within the spatial fan-shaped range at the swing angle; it is mainly suitable for wide application scenarios where concentrated and dense irrigation is not required.

[0063] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A swing sprayer characterized by: The application relates to a three-way ball valve (30) comprising a valve seat (34) with a spherical valve cavity inside, a water inlet (31), a first water outlet (32) and a second water outlet (33) being arranged on the peripheral wall of the valve seat (34) and being communicated with the spherical valve cavity, and the water inlet (31), the first water outlet (32) and the second water outlet (33) being arranged at an angle of 120 DEG with each other, a ball valve core (35) being arranged in the valve seat (34), a valve rod (37) being arranged on the top of the ball valve core (35), a valve core hole (36) being arranged in the ball valve core (35) and being arranged at an angle of 120 DEG at two ends, the valve core hole (36) being communicated with any two of the water inlet (31), the first water outlet (32) and the second water outlet (33) through valve position switching, zinc pipes (38) being arranged at two ends of the inner cavity of the valve core hole (36) and being detachably attached to the wall, the outer end of the zinc pipe (38) being fixed through a snap spring (39) embedded in the inner wall of the end of the valve core hole (36), two valve core maintenance holes (90) being arranged on the peripheral wall of the spherical valve cavity, the two valve core maintenance holes (90) being arranged at an angle of 120 DEG and being arranged in a staggered mode with the water inlet (31), the first water outlet (32) and the second water outlet (33), and a sealing plug (41) being arranged at the outer end of the valve core maintenance hole (90). The application further relates to a mounting plate (10) provided with the three-way ball valve (30) and a spraying pipe (20), the first water outlet (32) being connected to one end of the spraying pipe (20) through a first water conveying pipe (40), the second water outlet (33) being connected to the other end of the spraying pipe (20) through a second water conveying pipe (50), a water wheel engine (60) being connected in series on the second water conveying pipe (50), a mechanical output end of the water wheel engine (60) being connected to a swing driving mechanism (80) through a speed reducer (70), and an output end of the swing driving mechanism (80) being connected to the spraying pipe (20) for driving the spraying pipe (20) to swing reciprocatingly.

2. A swing sprayer according to claim 1, wherein: The mounting plate (10) is provided with a supporting leg (11) at the bottom, a pair of bearing seats (12) being fixedly arranged on the top surface of the mounting plate (10), and the spraying pipe (20) being rotatably arranged on the mounting plate (10) through the bearing seats (12).

3. A swing sprayer according to claim 1, wherein: The middle part of the spraying pipe (20) is an arc-shaped curved structure protruding upwards, and a plurality of high-pressure nozzles (21) are embedded on the pipe wall of the spraying pipe (20) and are arranged at intervals along the length direction.

4. A swing sprayer according to claim 1, wherein: The first water conveying pipe (40) and the second water conveying pipe (50) are both provided with a one-way valve (45) at one end of the spraying pipe (20).

5. A swing sprayer according to claim 1 wherein: The water wheel engine (60) includes a casing (61), the casing (61) is through the two ends, the casing (61) inner cavity is provided with an impeller (62) and a wheel shaft (63), the casing (61) rear end is connected with a inclined pipe seat (64), the side wall of the inclined pipe seat (64) is provided with a wheel shaft seat (65), the wheel shaft (63) is rotatably installed on the wheel shaft seat (65), and the wheel shaft (63) output end is in transmission connection with the speed reducer (70).

6. A swing sprayer according to claim 1 wherein: The swing driving mechanism (80) includes a mounting shell (81), the output shaft (71) of the speed reducer (70) extends into the mounting shell (81) and is connected with a crank (82), the tail end of the crank (82) is movably connected with a connecting rod (84) through a hinge pin a (83), the tail end of the connecting rod (84) is movably connected with a push-pull rod (86) through a hinge pin b (85), the push-pull rod (86) is installed on the inner wall of the mounting shell (81) through a sliding seat (87), the push-pull rod (86) slides along the sliding seat (87) under the driving action of the connecting rod (84), and the outer wall of the push-pull rod (86) is provided with a row of teeth (88).

7. An oscillating sprinkler according to claim 6 wherein: The gear (89) is a clutch combination structure, including an inner wheel disc (891) and an outer tooth ring (892), the inner ring of the outer tooth ring (892) is provided with a stepped groove, the stepped groove is provided with an annular pressing plate (893) on the opening side, the inner wheel disc (891) is embedded between the stepped groove and the annular pressing plate (893), and the outer side of the outer tooth ring (892) is provided with a threaded hole and is connected with a clutch screw (894). After the clutch screw (894) is screwed, the outer tooth ring (892) and the inner wheel disc (891) are relatively stationary to rotate synchronously, and the mounting shell (81) is provided with an adjusting hole (810) for adjusting the tightness of the clutch screw (894).

8. A method of operating a swing sprayer according to any one of claims 1-7, characterized in that, The working steps include: The water inlet (31) of the three-way ball valve (30) is communicated with the external high-pressure water pipe; The initial orientation of the spray pipe (20) is adjusted through the clutch combination structure of the gear (89); The three working modes of the spray pipe (20) are adjusted and switched through the three-way ball valve (30).

9. A method of operating a swing sprayer according to claim 8 wherein, The three working modes of the spray pipe (20) are adjusted and switched as follows: When the spray pipe (20) is idle: adjust the three-way ball valve (30) so that the valve core hole (36) is communicated with the first water outlet (32) and the second water outlet (33) at both ends; When the spray pipe (20) is fixed angle straight spray: adjust the three-way ball valve (30) so that the valve core hole (36) is communicated with the water inlet (31) and the first water outlet (32) at both ends; When the spray pipe (20) is swing angle range spray: adjust the three-way ball valve (30) so that the valve core hole (36) is communicated with the water inlet (31) and the second water outlet (33) at both ends.

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