Spiral runner valve and on-pipe drip irrigation emitter

Abstract

The invention discloses a spiral runner valve and an on-pipe drip irrigation emitter, and belongs to the technical field of irrigation devices. The spiral flow channel valve comprises a body, a spiral flow channel is arranged on the side wall of the body, a water inlet flow channel is formed in the top end of the body and connected with the water inlet end of the spiral flow channel, a water outlet flow channel is formed in the bottom end of the body and connected with the water outlet end of the spiral flow channel, and a blocking structure for blocking water flow is arranged in the spiral flow channel. According to the spiral flow channel valve and the on-pipe drip irrigation emitter, through collision and friction between the spiral flow channel and the upper stop block and between the stop block and water flow, the energy dissipation capacity for pressurized water is improved, vortex turbulent fluctuation of the downstream face of the upper stop block and the downstream face of the lower stop block is improved, sediment deposition on the downstream face is reduced, and the service life of the drip irrigation emitter is prolonged. And the normal use of the drip irrigation emitter is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of irrigation devices, and in particular to a spiral flow channel valve and an on-tube drip irrigation device. Background Art

[0002] Drip irrigation emitters are a type of equipment used for precision irrigation, and are widely used in agriculture, horticulture, and landscaping. They deliver water directly to the roots of plants to achieve efficient and water-saving irrigation. Drip irrigation emitters are the core components of drip irrigation systems. Drip irrigation emitters are installed on pipes and are responsible for slowly releasing water into the soil in the form of drops or trickles. The on-tube pressure-compensating emitter has an elastic diaphragm or spring device inside that can automatically adjust the water output according to changes in water pressure. When the water pressure increases, the elastic diaphragm or spring will compress and reduce the opening of the water outlet; when the water pressure decreases, the elastic diaphragm or spring will stretch and increase the opening of the water outlet. This ensures that the water output remains constant under different pressure conditions. However, the elastic diaphragm or spring device of the on-tube pressure-compensating emitter is affected by impurities in the water, and it is not easy to rebound after deformation, which affects the normal use of the on-tube pressure-compensating emitter. Summary of the invention

[0003] The purpose of the present invention is to provide a spiral flow channel valve and a tube-mounted drip irrigation emitter, wherein the spiral flow channel valve is arranged in the drip irrigation emitter, and the water flow is blocked by the upper blocking block and the lower blocking block arranged at intervals, and the spiral flow channel increases the flow channel length, and the collision and friction between the spiral flow channel and the upper blocking block, and the blocking block and the water flow improve the energy dissipation capacity of pressurized water. A vortex area is formed between the upper blocking block and the lower blocking block, and the vortex turbulence on the back water surface of the upper blocking block and the lower blocking block is improved, and the sedimentation on the back water surface is reduced, thereby ensuring the normal use of the drip irrigation emitter.

[0004] To achieve the above-mentioned purpose, the present invention provides a spiral flow channel valve, including a main body, a spiral flow channel is arranged on the side wall of the main body, an inlet flow channel is opened at the top of the main body, the water inlet flow channel is connected to the water inlet end of the spiral flow channel, a water outlet flow channel is opened at the bottom of the main body, the water outlet flow channel is connected to the water outlet end of the spiral flow channel, and a blocking structure with a blocking effect on water flow is arranged in the spiral flow channel.

[0005] Preferably, the blocking structure includes upper blocking blocks and lower blocking blocks that are spaced apart, the upper blocking blocks are evenly arranged on the upper side wall of the spiral flow channel, the lower blocking blocks are evenly arranged on the lower side wall of the spiral flow channel, and a vortex zone is formed between the upper blocking blocks and the lower blocking blocks.

[0006] Preferably, the length of the upper blocking block and the lower blocking block are both 0.6mm-1.0mm, and the height is both 0.6mm-1.0mm; along the length direction of the spiral flow channel, the distance between the upper blocking block and the lower blocking block is 0.6mm-1.0mm.

[0007] Preferably, the spiral flow channel has a depth of 0.6 mm-1.0 mm, a width of 1.2 mm-2.0 mm, and a length of 60 mm-100 mm.

[0008] Preferably, the diameter of the body is 8mm-15mm, and the height of the body is 8mm-15mm.

[0009] Preferably, the water inlet end of the water inlet channel is located at the center of the top surface of the main body, and the water inlet channel is a rectangular channel; the water outlet end of the water outlet channel is located at the center of the bottom surface of the main body, and the water outlet channel is a rectangular channel.

[0010] A tube-mounted drip irrigation emitter containing the above-mentioned spiral flow channel valve comprises a base and an upper cover. The base is provided with an installation cavity for accommodating the spiral flow channel valve, and the outer wall of the spiral flow channel valve is fitted with the inner wall of the installation cavity. A cover body for fixing the spiral flow channel valve is provided above the base, and a water inlet pipe is provided on the cover body, and the water inlet pipe is connected to the water inlet flow channel. A water outlet pipe is provided on the base, and the water outlet pipe is connected to the water outlet flow channel.

[0011] Preferably, the base is provided with an annular baffle, the mounting cavity is surrounded by the baffle, an annular slot is provided between the baffle and the base, the cover body is provided with an annular plug plate adapted to the slot, and the plug plate is inserted into the slot to connect the cover body and the base.

[0012] Preferably, the height of the base is 18mm-23mm, and the radius is 8mm-15mm; the height of the cover is 17mm-22mm, and the inner diameter of the plug plate is 6mm-8mm.

[0013] Preferably, the diameter of the water inlet hole is 0.5mm-1.0mm, and the diameter of the water outlet hole is 0.5mm-1.0mm.

[0014] The advantages and positive effects of the spiral flow channel valve and the drip irrigation emitter of the present invention are: 1. The present invention arranges a spiral flow channel valve in the drip irrigation emitter. The spiral flow channel in the spiral flow channel valve increases the flow channel length. The upper blocking blocks and the lower blocking blocks arranged at intervals block the water flow. When the water flows in the spiral flow channel, the upper blocking blocks and the lower blocking blocks collide and rub with the water flow, thereby improving the energy dissipation capacity of pressurized water.

[0015] 2. The present invention forms a vortex zone between the upper blocking block and the lower blocking block, improves the vortex turbulence on the back water surface of the upper blocking block and the lower blocking block, reduces the sediment accumulation on the back water surface, and ensures the normal use of the drip irrigation emitter.

[0016] 3. The upper blocking block and the lower blocking block of the present invention are of cubic structure, the spiral flow channel is a rectangular flow channel, and the water inlet flow channel and the water outlet flow channel are both rectangular flow channels, so that the spiral flow channel valve of the present invention has a simple structure and is easy to process.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure of the spiral flow channel valve according to the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 2 The three-dimensional structure of the spiral flow channel valve according to the embodiment of the present invention is shown in FIG. Figure 2 ; Figure 3 A schematic diagram of the bottom three-dimensional structure of a spiral flow channel valve according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the front view structure of the spiral flow channel valve according to an embodiment of the present invention; Figure 5 For attachment Figure 1 Middle A: Enlarged view; Figure 6 It is a schematic diagram of the three-dimensional structure of a drip irrigation emitter according to an embodiment of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of a drip irrigation emitter according to an embodiment of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the drip irrigation emitter base according to an embodiment of the present invention; Fig. 9 It is a schematic diagram of the top view of the structure of the drip irrigation emitter base according to an embodiment of the present invention; Fig.10 It is a schematic diagram of the cross-sectional structure of the drip irrigation emitter base according to an embodiment of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the drip irrigation emitter cover according to an embodiment of the present invention; Fig.12 It is a schematic diagram of the cross-sectional structure of the drip irrigation emitter cover according to an embodiment of the present invention; Fig.13 Constructing a model for a drip irrigation emitter according to an embodiment of the present invention; Fig.14 The simulated fluid pressure distribution inside the drip irrigation emitter according to the embodiment of the present invention; Fig.15 The turbulent energy distribution of the fluid simulated inside the drip irrigation emitter according to the embodiment of the present invention; Fig.16 FIG. 4 is a simulated fluid velocity distribution inside the drip irrigation emitter according to an embodiment of the present invention.

[0019] Reference numerals 1. Main body; 2. Spiral flow channel; 3. Upper side wall; 4. Lower side wall; 5. Upper blocking block; 6. Lower blocking block; 7. Water inlet flow channel; 8. Water outlet flow channel; 9. Vortex area; 10. Base; 11. Cover; 12. Water inlet pipe; 13. Water inlet hole; 14. Water outlet pipe; 15. Water outlet hole; 16. Baffle; 17. Installation cavity; 18. Slot; 19. Insert plate. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-Figure 5 As shown. A spiral flow channel valve includes a main body 1, which is a cylindrical structure. The diameter of the main body 1 is 8mm-15mm, preferably 10mm. The height of the main body 1 is 8mm-15mm, preferably 10mm. A spiral flow channel 2 is arranged on the side wall of the main body 1, and the spiral flow channel 2 is evenly wound on the side wall of the main body 1. The setting of the spiral flow channel 2 increases the length of the flow channel within a limited length, which is beneficial to improving the energy dissipation effect on pressurized water. The depth of the spiral flow channel 2 is 0.6mm-1.0mm, preferably 0.8mm; the width is 1.2mm-2.0mm, preferably 1.6mm, and the length is 60mm-100mm, preferably 80mm.

[0023] The top of the body 1 is provided with an inlet channel 7, which is connected to the inlet end of the spiral channel 2. The bottom of the body 1 is provided with an outlet channel 8, which is connected to the outlet end of the spiral channel 2. The inlet end of the inlet channel 7 is located at the center of the top surface of the body 1, and the inlet channel 7 is a rectangular channel. The outlet end of the outlet channel 8 is located at the center of the bottom surface of the body 1, and the outlet channel 8 is a rectangular channel.

[0024] A blocking structure having a blocking effect on water flow is arranged in the spiral flow channel 2. The blocking structure includes an upper blocking block 5 and a lower blocking block 6 arranged at intervals, the upper blocking block 5 is evenly fixedly arranged on the upper side wall 3 of the spiral flow channel 2, and the lower blocking block 6 is evenly fixedly arranged on the lower side wall 4 of the spiral flow channel 2. A vortex area 9 is formed between the upper blocking block 5 and the lower blocking block 6.

[0025] The length of the upper blocking block 5 and the lower blocking block 6 are both 0.6mm-1.0mm, preferably 0.8mm; the height is both 0.6mm-1.0mm, preferably 0.8mm. Along the length direction of the spiral flow channel, the distance between the upper blocking block 5 and the lower blocking block 6 is 0.6mm-1.0mm, preferably 0.8mm. In this embodiment, a total of 49 upper blocking blocks 5 and lower blocking blocks 6 are arranged in the spiral flow channel 2.

[0026] The upper blocking block 5 and the lower blocking block 6 are connected in sequence, which increases the turbulent kinetic energy of the spiral flow channel 2, improves the vortex turbulence on the back surface of the upper blocking block 5 and the lower blocking block 6, reduces the sediment deposition on the back surface, and ensures the smooth flow of water. The spiral flow channel 2 increases the length of the flow channel, and the spiral flow channel 2, the upper blocking block 5 and the lower blocking block 6 rub and collide with the water flow, which increases the energy dissipation capacity of the pressurized water.

[0027] like Figure 6 , Figure 7 As shown. A drip irrigation device includes a base 10 and an upper cover, wherein the base 10 is used to place a spiral flow channel valve, and the upper cover is used to fix the spiral flow channel valve inside the base 10. An installation cavity 17 for accommodating the spiral flow channel valve is provided inside the base 10, and the outer wall of the spiral flow channel valve is in contact with the inner wall of the installation cavity 17. A cover body 11 for fixing the spiral flow channel valve is provided above the base 10. An inlet pipe 12 is provided on the cover body 11, and a water inlet hole 13 inside the inlet pipe 12 is connected to a water inlet channel 7. An outlet pipe 14 is provided on the base 10, and a water outlet hole 15 in the outlet pipe 14 is connected to a water outlet channel 8.

[0028] like Figure 8 , Fig. 9 , Fig.10 As shown. An annular baffle 16 is fixedly arranged on the base 10, and the mounting cavity 17 is surrounded by the baffle 16. The outer wall of the spiral flow channel valve is closely fitted with the inner wall of the baffle 16 to ensure that the water flows in the spiral flow channel 2. An annular slot 18 is arranged between the baffle 16 and the base 10.

[0029] like Fig.11 , Fig.12As shown. The cover body 11 is provided with an annular plug plate 19 adapted to the slot 18, and the plug plate 19 is inserted into the slot 18 to connect the cover body 11 with the base 10. The baffle 16, the base 10, the cover body 11, the plug plate 19, and the spiral flow channel valve are coaxially arranged. A rubber sealing ring can be provided between the plug plate 19 and the slot 18 as required to ensure the sealing effect. The plug plate 19 and the slot 18 can be interference fit to ensure the strength of the connection.

[0030] The height of the base 10 is 18mm-23mm, preferably 21mm, and the radius is 8mm-15mm, preferably 10mm. The height of the cover 11 is 17mm-22mm, preferably 20mm, and the inner diameter of the plug plate 19 is 6mm-8mm, preferably 6.7mm.

[0031] The diameter of the water inlet 13 is 0.5 mm-1.0 mm, preferably 0.7 mm. The diameter of the water outlet 15 is 0.5 mm-1.0 mm, preferably 0.7 mm.

[0032] When in use, water flows into the water inlet channel 7 through the water inlet hole 13 of the water inlet pipe 12, and then flows into the spiral flow channel 2 through the water inlet channel 7. The water collides with the spiral flow channel 2 and the upper blocking block 5 and the lower blocking block 6 in the spiral flow channel 2 to dissipate energy of the water flow. The water that has undergone energy dissipation flows into the water outlet channel 8 through the spiral flow channel 2, and then flows out through the water outlet hole 15.

[0033] In order to verify the effectiveness of the drip irrigation emitter described in the present invention, a numerical simulation is performed on the tube-type drip irrigation emitter described in the present invention. The fluid in the flow channel is constructed and the computational grid is divided according to the size of the tube-type spiral flow channel 2 drip irrigation emitter with the help of ANASYS Workbench tool. The constructed model is as follows Fig.13 shown.

[0034] The pressure of the water inlet pipe 12 is set to 100KPa, and the pressure of the water outlet pipe 14 is set to 0KPa. The k-ε model is used for simulation calculation to obtain the pressure distribution, turbulent energy and velocity distribution of the fluid in the flow channel. The results are as follows: Fig.14 , Fig.15 , Fig.16 As shown in the figure, due to the existence of the spiral flow channel 2 and the upper blocking block 5 and the lower blocking block 6, the fluid on the upstream surface of the mainstream flow channel enters the downstream surface, resulting in a very significant turbulent energy dissipation phenomenon. The upstream surface has a very significant high flow velocity area distribution, and the downstream surface has a very significant vortex area 9, which can effectively reduce the siltation and has a very good energy dissipation effect on pressurized water.

[0035] Therefore, by adopting the spiral flow channel valve and the tube-mounted drip irrigation emitter described in the present invention, the energy dissipation capacity of pressurized water is improved through the spiral flow channel and the upper blocking block, and the collision and friction between the blocking block and the water flow, and the vortex turbulence on the back water surface of the upper blocking block and the lower blocking block is improved, the silt accumulation on the back water surface is reduced, and the normal use of the drip irrigation emitter is guaranteed.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A spiral flow channel valve, characterized in that: It includes a main body, a spiral flow channel is arranged on the side wall of the main body, a water inlet flow channel is opened at the top of the main body, the water inlet flow channel is connected to the water inlet end of the spiral flow channel, a water outlet flow channel is opened at the bottom of the main body, the water outlet flow channel is connected to the water outlet end of the spiral flow channel, and a blocking structure with a blocking effect on water flow is arranged in the spiral flow channel.

2. A spiral flow channel valve according to claim 1, characterized in that: The blocking structure comprises an upper blocking block and a lower blocking block which are arranged at intervals. The upper blocking blocks are evenly arranged on the upper side wall of the spiral flow channel, and the lower blocking blocks are evenly arranged on the lower side wall of the spiral flow channel. A vortex area is formed between the upper blocking blocks and the lower blocking blocks.

3. A spiral flow channel valve according to claim 2, characterized in that: The length of the upper blocking block and the lower blocking block are both 0.6mm-1.0mm, and the height is both 0.6mm-1.0mm; along the length direction of the spiral flow channel, the distance between the upper blocking block and the lower blocking block is 0.6mm-1.0mm.

4. A spiral flow channel valve according to claim 1, characterized in that: The spiral flow channel has a depth of 0.6mm-1.0mm, a width of 1.2mm-2.0mm, and a length of 60mm-100mm.

5. The spiral flow channel valve according to claim 1, characterized in that: The diameter of the body is 8mm-15mm, and the height of the body is 8mm-15mm.

6. A spiral flow channel valve according to claim 1, characterized in that: The water inlet end of the water inlet channel is located at the center of the top surface of the main body, and the water inlet channel is a rectangular channel; the water outlet end of the water outlet channel is located at the center of the bottom surface of the main body, and the water outlet channel is a rectangular channel.

7. A tube-mounted drip irrigation emitter comprising the spiral flow channel valve according to any one of claims 1 to 6, characterized in that: It includes a base and an upper cover. The base is provided with an installation cavity for accommodating the spiral flow channel valve. The outer wall of the spiral flow channel valve is fitted with the inner wall of the installation cavity. A cover body for fixing the spiral flow channel valve is provided above the base. The cover body is provided with a water inlet pipe, which is connected to the water inlet flow channel. The base is provided with a water outlet pipe, which is connected to the water outlet flow channel.

8. The tube-mounted drip irrigation emitter with a spiral flow channel valve according to claim 7, characterized in that: The base is provided with an annular baffle, the mounting cavity is surrounded by the baffle, an annular slot is provided between the baffle and the base, the cover body is provided with an annular plug plate matched with the slot, and the plug plate is inserted into the slot to connect the cover body and the base.

9. The tube-mounted drip irrigation emitter with a spiral flow channel valve according to claim 7, characterized in that: The height of the base is 18mm-23mm, and the radius is 8mm-15mm; the height of the cover is 17mm-22mm, and the inner diameter of the plug plate is 6mm-8mm.

10. The tube-mounted drip irrigation emitter with a spiral flow channel valve according to claim 7, characterized in that: The diameter of the water inlet hole is 0.5mm-1.0mm, and the diameter of the water outlet hole is 0.5mm-1.0mm.

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