A dual-mode switching garden spray faucet

Abstract

The present invention discloses a dual-mode switching garden spray faucet, belonging to the technical field of spray faucets. The dual-mode switching garden spray faucet comprises a nozzle seat, a spray head, a dual-mode switching unit, and a liquid inlet pipe seat. The nozzle seat is provided with an inner ring flow channel in the middle, and the nozzle seat is provided with an outer ring flow channel outside the inner ring flow channel. A plurality of collecting channels converging to the center of the nozzle seat are arranged at intervals on the inner side of the inner ring flow channel. A first threaded opening connected to the collecting channel is provided at the center of the top of the nozzle seat. A plurality of scattering channels away from the center of the nozzle seat are arranged at intervals on the outer ring flow channel. A plurality of second threaded openings connected to the scattering channels are radially provided on the outside of the nozzle seat. The spray head comprises a Venturi accelerator tube screwed to the first threaded opening and a scattering nozzle screwed to the second threaded opening. The dual-mode switching garden spray faucet of the present invention can automatically switch modes, expand the spraying area, ensure uniform spraying within the spraying area, and realize high-position spraying.

Description

Technical Field

[0001] The invention specifically relates to a dual-mode switching garden spray faucet, and belongs to the technical field of spray faucets. Background Art

[0002] When irrigating a garden, a spray faucet is often required to cover an area with itself as the center point. During the spraying process, uneven spraying of the area often occurs. Since most existing spray faucets have only the function of opening and closing, their spraying radius and spraying area cannot be flexibly adjusted. Therefore, in order to avoid the occurrence of uneven spraying, the faucet arrangement density is often increased when the sprinkler system is laid out, so that the spraying coverage areas of adjacent faucets overlap with each other, thereby reducing the probability of uneven spraying. Alternatively, manual leak repair is used to eliminate the uneven spraying of the area. However, both methods have shortcomings. For this reason, China Patent Authorization Announcement No.: CN107398363B, Public A dual-mode switching garden spray faucet is disclosed, comprising a cylindrical nozzle, one end of the nozzle is a two-level stepped boss, the other end of the nozzle is concave to form a chamber, the nozzle is provided with an inner and outer circle flow channel, the number of the inner circle flow channel and the outer circle flow channel are both at most 2, the axes of the inner and outer circle flow channels and the axis of the nozzle are arranged in the same plane; a switching disk is sleeved on the positioning shaft at the center position of the bottom of the chamber, this dual-mode switching garden spray faucet has two modes, which can be switched according to actual needs when in use, and the spraying area can be flexibly adjusted; but this structure needs to manually rotate the switch when switching the mode. Due to the large number of spray faucets, the workload of switching the modes back and forth is large. In addition, the spray faucet cannot perform high-position spraying. Summary of the Invention

[0003] To solve the above problems, the present invention proposes a dual-mode switching garden spray faucet, which can automatically switch modes. The spray faucet can expand the spraying area and ensure uniform spraying within the spraying area. In addition, high-position spraying can be achieved.

[0004] The dual-mode switching garden spray faucet of the present invention comprises:

[0005] A nozzle seat, wherein an inner ring flow channel is provided in the middle of the nozzle seat, and an outer ring flow channel is provided outside the inner ring flow channel; a plurality of collecting channels converging to the center of the nozzle seat are provided at intervals inside the inner ring flow channel; a first threaded opening connected to the collecting channel is provided at the center of the top of the nozzle seat; a plurality of scattering flow channels away from the center of the nozzle seat are provided at intervals on the outer ring flow channel; a plurality of second threaded openings connected to the scattering flow channels are provided radially on the outside of the nozzle seat;

[0006] The spray head includes a venturi accelerator tube screwed to the first threaded port and a scattering nozzle screwed to the second threaded port; the scattering nozzle has a coverage angle of 120°; a pressure jet nozzle is screwed to the top of the venturi accelerator tube, and the pressure jet nozzle is a rotating nozzle or a directional nozzle fixed to the top of the venturi accelerator tube;

[0007] A dual-mode switching unit, comprising a first annular elastic silicone rubber; the first elastic silicone rubber is integrally formed with a skirt; a gland is provided at the bottom of the first elastic silicone rubber, and the gland is fixed to the nozzle seat by bolts; a V-shaped through-hole is provided at the center of the gland; a core seat is movably engaged inside the V-shaped through-hole; a core post is movably passed through the middle of the core seat, one end of the core post is screwed to the center of the bottom surface of the nozzle seat, and the other end is screwed to a limit nut, which abuts the bottom of the core seat; an elastic member is provided between the core post and the nozzle seat; the Shore hardness of the first elastic silicone rubber is A50;

[0008] The liquid inlet pipe seat is fixed to the bottom of the nozzle seat through a flange.

[0009] During operation, the liquid inlet pipe seat injects pressurized water into the bottom of the nozzle seat. Then, the dual-mode switching unit is activated. When the water pressure is lower than the deformation of the skirt, the water flows into the flow channel formed by the skirt and the inlet of the outer ring flow channel, and enters the scattering flow channel through the outer ring flow channel. Then, the water is atomized and sprayed through the scattering flow channel and the scattering nozzle. The coverage angle of the atomized water is 120°.

[0010] When the water pressure reaches the deformation pressure of the skirt opening, the water flows into the flow channel formed by the skirt and the outer ring flow channel inlet. At this time, the skirt deforms and the flow channel shrinks. At the same time, the elastic part begins to deform, and the core seat slides along the core column. The water flows into the flow channel formed by the core seat and the core column. The water flows into the inner ring flow channel and enters the first threaded port through the collecting channel. After being pressurized by the Venturi accelerator tube, the high-pressure water is directed and high-position sprayed or rotated through the pressure jet nozzle, spraying from low to high or continuously expanding the spray area; when the water pressure continues to increase, the outer ring flow channel is closed by the skirt. At this time, the water flows completely into the inner ring flow channel and enters the Venturi accelerator tube. At this time, the pressure jet nozzle is in full-open mode; the spray faucet completes low-pressure mode spraying, low-pressure to high-pressure mode switching spraying and high-pressure mode spraying; by adjusting the water pressure, the mode can be automatically switched, the spraying area can be expanded, the spraying height can be increased, and uniform spraying within the spraying area can be ensured.

[0011] Furthermore, it also includes a sealing base, a wedge-shaped sealing ring is provided between the nozzle seat and the liquid inlet pipe seat, the skirt is provided opposite to the sealing ring, when the skirt is subjected to a water pressure of less than 0.3Mpa, a flow channel is provided between the skirt and the sealing ring; when the skirt is subjected to a water pressure of ≥0.3Mpa, the skirt is compressed and deformed and pressed together with the sealing ring to close the outer ring flow channel; the upper inner side of the liquid inlet pipe seat is integrally formed with a ring plate, the bottom of the ring plate is pressed with a honeycomb filter; the bottom of the honeycomb filter is pressed with a flow guide cover; the bottom of the flow guide cover movably passes through the sealing base; and a metal braided tube is screwed on to the bottom of the sealing base; the sealing base and the liquid inlet pipe seat are fixed by a flange; the top of the sealing base is integrally formed with an embedded tube that fits with the inner wall of the liquid inlet pipe seat and is pressed against the flow guide cover; the metal braided tube is connected to the pressure water supply pipe; the sealing ring has a Shore hardness of 70 and a compression rate of 30±2%;

[0012] During operation, the pressure of the pressure water supply pipe input end is regulated by a pressure regulating valve, and the set water pressure enters the pressure water supply pipe and is distributed to each metal braided pipe. Then, the pressurized water flows into the guide cover through the metal braided pipe, and after being filtered through the honeycomb filter, the water flows into the dual-mode switching unit. When the water flow pressure is lower than the skirt deformation and the elastic deformation of the elastic part, the water flows from the flow channel formed between the sealing ring and the skirt into the outer ring flow channel; when the water flow reaches the skirt deformation water pressure, the skirt begins to deform, and the elastic part begins to deform synchronously, and the water flows into the flow channel between the V-shaped through hole and the core seat and enters the inner ring flow channel, realizing synchronous water inflow of the inner ring flow channel and the outer ring flow channel. As the water flow pressure continues to rise, the flow channel formed between the sealing ring and the skirt gradually shrinks, and the inner ring flow channel gradually increases until the outer ring flow channel is completely closed and the inner ring flow channel is fully open; when the core seat moves, it slides linearly through the core column.

[0013] Furthermore, a plurality of supporting legs are fixed to the bottom of the sealing base, and the supporting legs are fixed to the garden ground; the spray faucet can be fixed to the garden ground through the supporting legs.

[0014] Furthermore, the elastic member is a second elastic silicone or a spring body; the elastic member is deformed by the elastic deformation of the second elastic silicone or the compression of the spring body, so that the inner ring flow channel inlet is formed at the front end of the pressure cover.

[0015] Furthermore, the top of the pressure cover is integrally formed into a limiting tube seat, the inner wall of the limiting tube seat is flush with the inner edge of the inner ring flow channel, and the first elastic silicone is movably engaged with the outside of the limiting tube seat; an annular groove for accommodating the first elastic silicone is formed by the pressure cover, the limiting tube seat and the nozzle seat, so as to avoid the first elastic silicone being compressed by the pressure cover when being fixed to the nozzle seat, resulting in the compression deformation of the first elastic silicone.

[0016] Furthermore, the collecting channel and the scattering channel both include a straight guide section, and the top of the straight guide section is integrally made with an inclined flow channel; when the pressurized water enters the nozzle seat, the straight guide sections of the collecting channel and the scattering channel first inject water flow, and then inject the water flow into the corresponding sprinkler head through the inclined flow channel.

[0017] Furthermore, the pressure jet nozzle is fixed to the top of the Venturi acceleration tube through a flange or thread, and the pressure jet nozzle and the Venturi acceleration tube can be assembled into one through the flange or thread; the directional nozzle includes an upwardly inclined guide pipe section, and the pressure nozzle is fixed to the front end of the guide pipe section; when the directional nozzle is installed, the inclination angle of the guide pipe section can be selected according to the height of the top of the tree, so that the high-pressure water can be sprayed directly above the tree.

[0018] Furthermore, an outer sleeve is embedded in the outside of the Venturi accelerator tube, and the bottom of the outer sleeve is fixed to the top of the nozzle seat through a flange; the outer sleeve can protect the Venturi accelerator tube, which can prevent the internal fluid impact from causing fluctuations in the installation position of the Venturi accelerator tube, and at the same time prevent the Venturi accelerator tube from being deformed by external impact.

[0019] Furthermore, the inlet diameter of the Venturi accelerator tube is 8±0.1 mm, the cone angle of the contraction section is 15±0.5°, the throat length is 5±0.2 mm, the diameter is 3±0.05 mm, the divergence section length is 20±1 mm, and the cone angle is 8±0.5°.

[0020] Furthermore, the collecting channel has a diameter of 8 mm, is symmetrically distributed along the central axis of the nozzle seat, and the end is connected to the inlet of the Venturi acceleration tube; the thickness gradient of the skirt is 0.8 mm to 2 mm, and its deformation under 0.3 MPa water pressure is ≥1.5 mm.

[0021] Furthermore, when the dual-mode switching unit is in the low-pressure stage of 0-0.1Mpa, the water pressure is insufficient to overcome the elastic resistance of the silicone, the skirt remains unchanged, and the water flow is sprayed out through the scattering nozzle with a coverage angle of 120°; when the dual-mode switching unit is in the high-pressure stage of ≥0.3MPa, the skirt deforms upward to close the entrance of the outer ring flow channel; the water flow is concentrated through the inner ring flow channel and ejected at high speed through the Venturi accelerator tube with a range of ≥8m; when the water flow pressure of the dual-mode switching unit is greater than >0.1Mpa and <0.3Mpa, the flow ratio of the inner ring flow channel and the outer ring flow channel can be linearly adjusted to 0-100%.

[0022] Compared with the existing technology, the dual-mode switching garden spray faucet of the present invention adjusts the water pressure of the water supply network according to the spraying requirements and can automatically switch modes. When working in the high-pressure mode, the spray faucet can work in the high-pressure mode to achieve cleaning and irrigation of tall trees, or expand the irrigation area of lower shrubs and lawns. When working in the low-pressure mode, wide-area atomization irrigation of lower shrubs and lawns is performed to avoid waste of water resources. When working in the transition mode between the high-pressure mode and the low-pressure mode, the flow ratio of the inner circle flow channel and the outer circle flow channel can be linearly adjusted to 0-100%, which can ensure uniform spraying throughout the spraying area. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a dual-mode switching garden spray faucet equipped with a rotating spray head according to the present invention.

[0024] Figure 2 This is a structural schematic diagram of a dual-mode switching garden spray faucet equipped with a directional nozzle according to the present invention.

[0025] Figure 3 This is a structural schematic diagram of a dual-mode switching garden spray faucet equipped with a rotating spray head and an outer casing according to the present invention.

[0026] Figure 4 This is a schematic cross-sectional view of the dual-mode switch garden spray faucet with an internally installed spring body according to the present invention.

[0027] Figure 5 For the present invention Figure 4 Schematic diagram of the locally enlarged structure at point A in the middle.

[0028] Figure 6 This is a schematic cross-sectional structure diagram of a dual-mode switchable garden spray faucet with a second elastic silicone installed inside the present invention.

[0029] Figure 7 For the present invention Figure 6 Schematic diagram of the locally enlarged structure at point B in the middle.

[0030] Figure 8 This is a schematic cross-sectional view of the dual-mode switching garden spray faucet with an internally installed limiting pipe seat according to the present invention.

[0031] Figure 9 For the present invention Figure 8 Schematic diagram of the partially enlarged structure at point C in the middle.

[0032] Figure 10 This is a schematic cross-sectional structure diagram of a dual-mode switchable garden spray faucet equipped with a rotating spray head according to the present invention.

[0033] Figure 11 This is a schematic cross-sectional structure diagram of a dual-mode switchable garden spray faucet equipped with a directional nozzle according to the present invention.

[0034] Figure markings: 1. nozzle seat, 2. inner ring flow channel, 3. outer ring flow channel, 4. collecting channel, 5. first threaded port, 6. scattering flow channel, 7. Venturi acceleration tube, 8. scattering nozzle, 9. rotating nozzle, 10. directional nozzle, 11. first elastic silicone, 12. skirt, 13. pressure cover, 14. core seat, 15. core column, 16. limiting nut, 17. liquid inlet pipe seat, 18. sealing base, 19. sealing ring, 20. ring plate, 21. honeycomb filter, 22. guide cover, 23. metal braided tube, 24. support foot, 25. limiting pipe seat, 26. outer shell, 27. second elastic silicone, 28. spring body. DETAILED DESCRIPTION

[0035] Example:

[0036] like Figures 1 to 11 The dual-mode garden spray faucet shown includes:

[0037] The nozzle base 1 is a cylindrical shell made of engineering plastic (nylon + 30% glass fiber reinforced); an inner ring flow channel 2 is opened in the middle of the nozzle base 1, and an outer ring flow channel 3 is opened outside the inner ring flow channel 2; a plurality of collecting channels 4 converging to the center of the nozzle base 1 are arranged at intervals inside the inner ring flow channel 2; a first threaded opening 5 connected to the collecting channel 4 is opened at the center of the top of the nozzle base 1; a plurality of scattering flow channels 6 away from the center of the nozzle base 1 are arranged at intervals on the outer ring flow channel 3; a plurality of second threaded openings connected to the scattering flow channels 6 are opened radially on the outside of the nozzle base 1;

[0038] The spray head includes a venturi accelerator tube 7 screwed to the first threaded port 5 and a scattering nozzle 8 screwed to the second threaded port; the scattering nozzle 8 has a coverage angle of 120°; a pressure jet nozzle is screwed to the top of the venturi accelerator tube 7, and the pressure jet nozzle is a rotating nozzle 9 or a directional nozzle 10 fixed to the top of the venturi accelerator tube 7;

[0039] The dual-mode switching unit includes a first annular elastic silicone rubber 11; the first elastic silicone rubber 11 is integrally formed with a skirt 12 on the outside. The skirt 12 is made of silicone rubber (Shore A hardness of 50) and has an umbrella-like structure with a thickness gradient of 0.8 mm to 2 mm. During the fatigue test, after 5000 times of 0.1-0.5MPa cycle test, the deformation of the skirt 12 was attenuated by less than 3%, and there was no cracking; in the initial state, a gap was set between the inlet of the outer ring flow channel 3, and after deformation under high pressure, the inlet of the inner ring flow channel 2 was closed; a pressure cover 13 was set at the bottom of the first elastic silicone 11, and the pressure cover 13 was fixed to the nozzle seat 1 by bolts; a V-shaped through hole was opened at the center of the pressure cover 13; a core seat 14 was movably engaged inside the V-shaped through hole; a core column 15 was movably passed through the middle of the core seat 14, one end of the core column 15 was screwed to the center of the bottom surface of the nozzle seat 1, and the other end was screwed to a limit nut 16, and the limit nut 16 was abutted against the bottom of the core seat 14; an elastic part was set between the core column 15 and the core seat 14; the Shore hardness of the first elastic silicone 11 was A50;

[0040] The liquid inlet pipe seat 17 is fixed to the bottom of the nozzle seat 1 through a flange.

[0041] During operation, the liquid inlet pipe seat 17 injects pressurized water into the bottom of the nozzle seat 1, and then the dual-mode switching unit is activated. When the water pressure is lower than the deformation of the skirt 12, the water flows into the flow channel formed by the skirt 12 and the inlet of the outer ring flow channel 3, and enters the scattering flow channel 6 through the outer ring flow channel 3, and then atomizes and sprays water through the scattering flow channel 6 and the scattering nozzle 8. The atomized water coverage angle is 120°. When the water pressure reaches the deformation pressure of the skirt 12, the water flows into the flow channel formed by the skirt 12 and the inlet of the outer ring flow channel 3. At this time, the skirt 12 is deformed and the flow channel is reduced. At the same time, the elastic member begins to deform, and the core seat 14 slides along the core column 15. The water flows into the flow channel formed by the core seat 14 and the core column 15. The water flows into the inner circle flow channel 2 and enters the first threaded port 5 through the collecting channel 4. After being pressurized by the Venturi acceleration tube 7, the high-pressure water is directed and high-position sprayed or rotated through the pressure jet nozzle, spraying from low to high or continuously expanding the spray area; when the water pressure is continuously pressurized, the outer circle flow channel 3 is closed by the skirt 12. At this time, all the water flows into the inner circle flow channel 2 and enters the Venturi acceleration tube 7. At this time, the pressure jet nozzle is in full-open mode; the spray faucet completes low-pressure mode spraying, low-pressure to high-pressure mode switching spraying and high-pressure mode spraying; by adjusting the water pressure, the mode can be switched automatically, the spraying area can be expanded, the spraying height can be increased, and uniform spraying in the spraying area can be guaranteed.

[0042] It also includes a sealing base 18, a wedge-shaped sealing ring 19 is provided between the nozzle seat 1 and the liquid inlet pipe seat 17, the skirt 12 is provided opposite to the sealing ring 19, when the skirt 12 is subjected to a water pressure of less than 0.3Mpa, a flow channel is provided between the skirt 12 and the sealing ring 19; when the skirt 12 is subjected to a water pressure of ≥0.3Mpa, the skirt 12 is compressed and deformed and pressed against the sealing ring 19 to close the outer ring flow channel 3; the upper inner side of the liquid inlet pipe seat 17 is integrally made of a ring plate 20, the bottom of the ring plate 20 is pressed with a honeycomb Filter screen 21; a deflector 22 is pressed against the bottom of the honeycomb filter screen 21; the bottom of the deflector 22 movably penetrates the sealing base 18; a metal braided tube 23 is screwed onto the bottom of the sealing base 18; the sealing base 18 is fixed to the liquid inlet pipe seat 17 via a flange; the top of the sealing base 18 is integrally formed with an embedded tube that fits against the inner wall of the liquid inlet pipe seat 17 and is pressed against the deflector 22; the metal braided tube 23 is connected to the pressure water supply pipe; the sealing ring 19 has a Shore A hardness of 70 and a compression rate of 30±2%.

[0043] During operation, the pressure of the pressure water supply pipe input end is regulated by the pressure regulating valve, and the set water pressure enters the pressure water supply pipe and is distributed to each metal braided tube 23. Then, the pressure water flows into the guide cover 22 through the metal braided tube 23, and after being filtered by the honeycomb filter 21, the water flows into the dual-mode switching unit. When the water pressure is lower than the deformation of the skirt 12 and the elastic deformation of the elastic member, the water flows from the flow channel formed between the sealing ring 19 and the skirt 12 into the outer ring flow channel 3; when the water reaches the shape of the skirt 12, the water flows into the outer ring flow channel 3. When the water pressure changes, the skirt 12 begins to deform, and the elastic part begins to deform synchronously. The water flows into the flow channel between the V-shaped through hole and the core seat 14 and enters the inner ring flow channel 2, realizing the synchronous water inflow of the inner ring flow channel 2 and the outer ring flow channel 3. As the water pressure continues to rise, the flow channel formed between the sealing ring 19 and the skirt 12 gradually shrinks, and the inner ring flow channel 2 gradually increases until the outer ring flow channel 3 is completely closed and the inner ring flow channel 2 is fully open; when the core seat 14 moves, it slides linearly through the core column 15.

[0044] A plurality of legs 24 are fixed to the bottom of the sealing base 18 , and the legs 24 are fixed to the garden ground. The spray faucet can be fixed to the garden ground through the legs 24 .

[0045] The elastic member is a second elastic silicone 27 or a spring body 28 . The elastic deformation of the second elastic silicone 27 or the compression of the spring body 28 achieves deformation of the elastic member, so that the front end of the gland 13 forms an inlet of the inner ring flow channel 2 .

[0046] The top of the pressure cover 13 is integrally formed with a limiting tube seat 25, the inner wall of the limiting tube seat 25 is flush with the inner edge of the inner ring flow channel 2, and the first elastic silicone 11 is movably engaged with the outside of the limiting tube seat 25; an annular groove for accommodating the first elastic silicone 11 is formed by the pressure cover 13, the limiting tube seat 25 and the nozzle seat 1, so as to avoid the first elastic silicone 11 being compressed by the pressure cover 13 when being fixed to the nozzle seat 1, resulting in the compression deformation of the first elastic silicone 11.

[0047] The collecting channel 4 and the scattering channel 6 both include a straight guide section, and the top of the straight guide section is integrally made with an oblique flow channel; when the pressurized water enters the nozzle seat 1, the straight guide sections of the collecting channel 4 and the scattering channel 6 first inject water flow, and then inject the water flow into the corresponding sprinkler head through the oblique flow channel.

[0048] The pressure jet nozzle is fixed to the top of the Venturi acceleration tube 7 through a flange or thread, and the pressure jet nozzle and the Venturi acceleration tube 7 can be assembled into one through the flange or thread; the directional nozzle 10 includes an upwardly inclined guide pipe section, and the pressure nozzle is fixed to the front end of the guide pipe section; when the directional nozzle 10 is installed, the inclination angle of the guide pipe section can be selected according to the height of the top of the tree, so that the high-pressure water can be sprayed directly above the tree.

[0049] The outer shell 26 is embedded in the outside of the Venturi accelerator tube 7, and the bottom of the outer shell 26 is fixed to the top of the nozzle seat 1 through a flange; the outer shell 26 can protect the Venturi accelerator tube 7, which can prevent the internal fluid impact from causing fluctuations in the installation position of the Venturi accelerator tube 7, and at the same time prevent the Venturi accelerator tube 7 from being deformed by external impact.

[0050] The inlet diameter of the Venturi accelerator tube 7 is 8±0.1mm, matching the front end flow channel and ensuring a smooth transition. The cone angle of the contraction section is 15±0.5° to avoid flow separation and reduce turbulence generation. The throat length is 5±0.2mm to stabilize the high-speed flow state and reduce vibration. The diameter is 3±0.05mm, the theoretical peak flow rate is 12m / s, and the diffusion section length is 20±1mm to ensure that kinetic energy is fully converted into static pressure energy. The cone angle is 8±0.5°, the pressure recovery rate is ≥85%, and cavitation is suppressed.

[0051] The collecting channel 4 has a diameter of 8 mm, is symmetrically distributed along the central axis of the nozzle seat 1, and the end is connected to the inlet of the Venturi acceleration tube 7; the thickness gradient of the skirt 12 is 0.8 mm to 2 mm, and its deformation under 0.3 MPa water pressure is ≥1.5 mm.

[0052] When the dual-mode switching unit is in the low-pressure stage of 0-0.1Mpa, the water pressure is insufficient to overcome the elastic resistance of the silicone, the skirt 12 remains unchanged, and the water flow is sprayed out through the scattering nozzle 8 with a coverage angle of 120°; the water flow is directed to the scattering flow channel 6 with wide coverage and low range, and atomized water flow, which is suitable for lawns / shrubs; when the dual-mode switching unit is in the high-pressure stage of ≥0.3MPa, the skirt 12 deforms upward to close the entrance of the outer ring flow channel 3; the water flow is concentrated to the first threaded port 5 and pressurized through the Venturi accelerator tube 7 to achieve a narrow range and high range of water flow, which is suitable for large-scale spraying and trees; the water flow is concentrated through the inner ring flow channel 2 and is ejected at high speed through the Venturi accelerator tube 7 with a range of ≥8m; in the high-pressure mode, the flow fluctuation is ≤2% (2.5±0.05L / s) after 10 repeated tests, and the flow consistency is good; the water flow pressure of the dual-mode switching unit is greater than>0.1 When the pressure is between Mpa and <0.3Mpa, the flow ratio of the inner ring flow channel 2 and the outer ring flow channel 3 can be linearly adjusted to 0-100%; the dual-channel dynamically proportions the water flow to achieve continuous adjustment of the spraying parameters; the mixed mode (water flow pressure greater than >0.1 Mpa and <0.3Mpa) can be achieved by manually adjusting the water inlet pressure (such as rotating the external knob); uniform spraying is completed in the working area; the diameter of the skirt 12 in its natural state is 35mm, and when subjected to the high-pressure mode water pressure, it shrinks and fits the inner wall of the flow channel, and the diameter of the skirt 12 is 32mm.

[0053] When in use, determine the position of the trees according to the layout of the garden, first fix the spray faucet to the side of the tree, and select the directional nozzle 10 that matches the tree according to its height, and rotate the directional nozzle 10 to the Venturi acceleration tube 7 so that the directional nozzle 10 and the Venturi acceleration tube 7 are fixed. Then, determine the distance between the spray faucet and the tree according to the crown width of the tree, and then fix the spray faucet to the garden ground; complete the fixation of the spray faucet; then, rotate the rotary nozzle 9 to the Venturi acceleration tube 7 so that the rotary nozzle 9 and the Venturi acceleration tube 7 are fixed. Then, determine the distance between adjacent rotary nozzles 9 according to the rotation radius of the rotary nozzle 9, or the distance between adjacent rotary nozzles 9. The distance between the rotating nozzle 9 and the directional nozzle 10; fix the spray faucet to the garden ground; complete the fixing of the spray faucet; realize the atomization spraying, rotary spraying and high-pressure spraying of the spray faucet, and can spray the spraying area in all directions and at high positions; when in use, use high water pressure spraying (0.35MPa) at night: the nozzle automatically switches to high pressure mode, the vertical water flow has strong penetrating power, can clean the leaves of tall trees, and expand the spray coverage; use low water pressure (0.08MPa) during the day: switch to scattering mode, use wide-area atomization to irrigate the lower shrubs, and when the water pressure transitions from low water pressure to high water pressure, it can spray the spraying area in all directions.

[0054] The above embodiments are only preferred implementations of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A dual-mode garden spray faucet, characterized by: include: A nozzle seat, wherein an inner ring flow channel is provided in the middle of the nozzle seat, and an outer ring flow channel is provided outside the inner ring flow channel; a plurality of collecting channels converging to the center of the nozzle seat are provided at intervals inside the inner ring flow channel; a first threaded opening connected to the collecting channel is provided at the center of the top of the nozzle seat; a plurality of scattering flow channels away from the center of the nozzle seat are provided at intervals on the outer ring flow channel; a plurality of second threaded openings connected to the scattering flow channels are provided radially on the outside of the nozzle seat; The spray head includes a venturi accelerator tube screwed to the first threaded port and a scattering nozzle screwed to the second threaded port; the scattering nozzle has a coverage angle of 120°; a pressure jet nozzle is screwed to the top of the venturi accelerator tube, and the pressure jet nozzle is a rotating nozzle or a directional nozzle fixed to the top of the venturi accelerator tube; A dual-mode switching unit, comprising a first annular elastic silicone rubber; the first elastic silicone rubber is integrally formed with a skirt; a gland is provided at the bottom of the first elastic silicone rubber, and the gland is fixed to the nozzle seat by bolts; a V-shaped through-hole is provided at the center of the gland; a core seat is movably engaged inside the V-shaped through-hole; a core post is movably passed through the middle of the core seat, one end of the core post is screwed to the center of the bottom surface of the nozzle seat, and the other end is screwed to a limit nut, which abuts the bottom of the core seat; an elastic member is provided between the core post and the nozzle seat; the Shore hardness of the first elastic silicone rubber is A50; A liquid inlet pipe seat, which is fixed to the bottom of the nozzle seat through a flange; When the water flow pressure is lower than the deformation of the skirt and the elastic deformation of the elastic part, the water flows into the outer ring flow channel from the flow channel formed between the sealing ring and the skirt; when the water flow reaches the skirt deformation water pressure, the skirt begins to deform, and the elastic part begins to deform synchronously, and the water flows into the flow channel between the V-shaped through hole and the core seat and enters the inner ring flow channel, realizing synchronous water inflow of the inner ring flow channel and the outer ring flow channel. As the water flow pressure continues to rise, the flow channel formed between the sealing ring and the skirt gradually shrinks, and the inner ring flow channel gradually increases, until the outer ring flow channel is completely closed and the inner ring flow channel is fully open.

2. The dual-mode garden spray faucet according to claim 1, characterized in that: It also includes a sealing base, a wedge-shaped sealing ring is arranged between the nozzle seat and the liquid inlet pipe seat, the skirt is arranged opposite to the sealing ring, when the skirt is subjected to a water pressure of less than 0.3Mpa, a flow channel is provided between the skirt and the sealing ring; when the skirt is subjected to a water pressure of ≥0.3Mpa, the skirt is compressed and deformed and pressed against the sealing ring to close the outer ring flow channel; the upper inner side of the liquid inlet pipe seat is integrally made of a ring plate, the bottom of the ring plate is pressed with a honeycomb filter; the bottom of the honeycomb filter is pressed with a flow guide cover; the bottom of the flow guide cover is movable through the sealing base; and a metal braided tube is screwed on to the bottom of the sealing base; the sealing base and the liquid inlet pipe seat are fixed by a flange; the top of the sealing base is integrally made of an embedded tube that fits with the inner wall of the liquid inlet pipe seat and is pressed against the flow guide cover; the metal braided tube is connected to the pressure water supply pipe; the sealing ring has a Shore hardness of 70 and a compression rate of 30±2%.

3. The dual-mode garden spray faucet according to claim 2, characterized in that: A plurality of supporting legs are fixed on the bottom of the sealing base, and the supporting legs are fixed on the garden ground.

4. The dual-mode garden spray faucet according to claim 1, characterized in that: The elastic member is a second elastic silica gel or a spring body.

5. The dual-mode garden spray faucet according to claim 1, characterized in that: The top of the gland is integrally formed into a limiting tube seat, the inner wall of the limiting tube seat is flush with the inner edge of the inner ring flow channel, and the first elastic silicone is movably engaged with the outer portion of the limiting tube seat.

6. The dual-mode garden spray faucet according to claim 1, characterized in that: The collecting flow channel and the scattering flow channel both include a straight flow guide section, and the top of the straight flow guide section is integrally formed with an oblique flow channel.

7. The dual-mode garden spray faucet according to claim 1, characterized in that: The pressure jet nozzle is fixed to the top of the venturi accelerating tube through a flange or a thread. The directional nozzle includes a guide pipe section inclined upward, and the pressure jet nozzle is fixed to the front end of the guide pipe section.

8. The dual-mode garden spray faucet according to claim 1, characterized in that: An outer shell is embedded on the outside of the Venturi accelerating tube, and the bottom of the outer shell is fixed to the top of the nozzle seat through a flange.

9. The dual-mode garden spray faucet according to claim 1, characterized in that: The inlet diameter of the Venturi accelerator tube is 8±0.1 mm, the cone angle of the contraction section is 15±0.5°, the throat length is 5±0.2 mm, the diameter is 3±0.05 mm, the length of the diffusion section is 20±1 mm, and the cone angle is 8±0.5°.

10. The dual-mode garden spray faucet according to claim 1, characterized in that: The collecting channel has a diameter of 8 mm, is symmetrically distributed along the central axis of the nozzle seat, and the end is connected to the inlet of the Venturi acceleration tube; the thickness gradient of the skirt is 0.8 mm to 2 mm, and its deformation under 0.3 MPa water pressure is ≥1.5 mm.

11. The dual-mode garden spray faucet according to claim 1, characterized in that: When the dual-mode switching unit is in the low-pressure stage of 0-0.1Mpa, the water pressure is insufficient to overcome the elastic resistance of the silicone, the skirt remains unchanged, and the water flow is sprayed out through the scattering nozzle with a coverage angle of 120°; when the dual-mode switching unit is in the high-pressure stage of ≥0.3MPa, the skirt deforms upward to close the entrance of the outer ring flow channel; the water flow is concentrated through the inner ring flow channel and ejected at high speed through the Venturi acceleration tube with a range of ≥8m; when the water flow pressure of the dual-mode switching unit is greater than >0.1Mpa and <0.3Mpa, the flow ratio of the inner ring flow channel and the outer ring flow channel can be linearly adjusted to 0-100%.

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