Tail-end filter with pressure regulating function for drip irrigation and operation process of tail-end filter

Abstract

The invention discloses a drip irrigation tail end filter with a pressure adjusting function and an operation process of the drip irrigation tail end filter. The drip irrigation tail end filter comprises a shell, an end cover, a lamination filter set located in the shell, a flow guide assembly surrounding the outer side of the lamination filter set and a cleaning assembly located in the middle of the lamination filter set. A water outlet is formed in the top of the shell, a drain outlet is formed in the bottom of the shell, the bottom is communicated with a base, a screen sleeve is arranged in the middle of the base, and a water inlet is formed in the base; water flow entering the tail-end filter rises upwards in a spiral shape, the spiral water flow is uniformly dispersed on the laminated filter group through the flow guide assembly to be filtered, accumulation of impurities on the laminated filter group is effectively avoided, the service life of the laminated filter group is prolonged, and meanwhile, the cleaning assembly is matched to filter the water flow while the water flow is filtered, so that the service life of the laminated filter group is prolonged. The water inlet amount and the water outlet amount can be automatically controlled according to the pressure in the tail end filter, the stability of the pressure in the tail end filter is guaranteed while efficient filtering is achieved, and the stability of the water outlet amount is improved.

Description

Technical Field

[0001] The invention relates to the technical field of laminated filters, and in particular to a terminal filter for drip irrigation with a pressure regulating function and an operating process thereof. Background Art

[0002] The drip irrigation system is a highly efficient water-saving irrigation technology commonly used in modern agriculture. It can greatly improve the utilization efficiency of water resources by accurately delivering water to the roots of crops, reducing water evaporation and loss. However, the drip irrigation system has high requirements for water quality. If the suspended impurities, sediment, algae, etc. in the water are not effectively filtered, they can easily clog the drip irrigation pipes and drippers, affecting the irrigation effect. Therefore, the terminal filter plays a vital role in the drip irrigation system, which can filter out impurities in the water and ensure the normal operation of the drip irrigation system.

[0003] In the planting process of mountain agriculture, drip irrigation technology is widely used due to its advantages of water saving and convenience. However, the mountainous terrain is undulating, which can easily lead to unstable water pressure in the irrigation system and uneven water discharge from the drippers. The usual practice is to use pressure-compensated drippers, but the application range of pressure-compensated drippers is limited, the cost is much higher than that of ordinary drippers, and the water quality requirements are also higher.

[0004] In order to realize the application of ordinary drip irrigation tape in mountain agriculture, a drip irrigation terminal filter with pressure regulation function is designed. Summary of the invention

[0005] The invention overcomes the shortcomings of the prior art and provides a terminal filter for drip irrigation with a pressure regulating function and an operating process thereof.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a terminal filter for drip irrigation with a pressure regulating function, comprising: a shell and an end cover, a laminated filter group located inside the shell, a flow guide component surrounding the outside of the laminated filter group, and a cleaning component located in the middle of the laminated filter group; a water outlet is arranged on the top of the shell, a sewage outlet is arranged on the bottom, the bottom is connected to a base, a leakage net is arranged in the middle of the base, and a water inlet is arranged on the base;

[0007] The cleaning assembly includes: a fixed sleeve installed in the middle of the shell, a movable sleeve sliding inside the fixed sleeve, a limiting ring limiting the movement of the movable sleeve, and a sealing member sealing the end of the fixed sleeve; both ends of the fixed sleeve and the movable sleeve are open, the fixed sleeve is connected with the leakage screen sleeve, the upper half of the movable sleeve is provided with an annular groove, and a spring is provided to drive the movable sleeve to reset;

[0008] The flow guide assembly drives the water flow to rise in a spiral shape.

[0009] In a preferred embodiment of the present invention, a filling filter material is arranged between the filter sleeve and the base.

[0010] In a preferred embodiment of the present invention, the sealing member includes: a sealing cover, and a flushing control rod fixed on the top of the sealing cover; the flushing control rod passes through the end cover, and the sealing cover is installed at the top open position of the fixed sleeve, and cooperates with the water flow from the water inlet to drive the movable sleeve to move downward, thereby controlling the distance the water flows through the filling filter material.

[0011] In a preferred embodiment of the present invention, the guide assembly includes: a plurality of fixed columns, and a plurality of baffle rings installed on the plurality of fixed columns; the plurality of fixed columns are fixedly installed inside the shell and surround the outer side of the laminated filter group, and the plurality of baffle rings are vertically stacked and installed on the fixed columns, and guide grooves are formed between adjacent baffle rings, and the widths of the plurality of guide grooves tend to gradually increase from bottom to top.

[0012] In a preferred embodiment of the present invention, the guide assembly further comprises: a spiral guide plate; the spiral guide plate is fixedly mounted on the inner wall of the shell to drive the water flow to climb upward.

[0013] In a preferred embodiment of the present invention, the laminated filter group includes: a bottom plate, a plurality of connecting columns located on the bottom plate, and a plurality of laminates sleeved on the connecting columns; the middle portion of the bottom plate is fixedly sleeved on the outer wall of the fixed sleeve, and the bottom plate is connected to the end cover through the connecting columns.

[0014] In a preferred embodiment of the present invention, the base is a tapered pipe structure, and the base and the mesh sleeve are provided with spiral drainage plates, and the filter material is filled in the gap between the base and the mesh sleeve.

[0015] In a preferred embodiment of the present invention, a one-way valve is provided at the water outlet.

[0016] An operating process of a drip irrigation terminal filter with a pressure regulating function comprises the following steps:

[0017] Step S1, water flows into the bottom of the terminal filter in a spiral shape, and rises in the terminal filter in a spiral shape;

[0018] Step S2, the water flow in the spiral climbing state evenly hits the guide component, and the guide component is dispersed on the laminated filter group to filter the water quality, and the filtered water flow is discharged through the water outlet;

[0019] Step S3, the water flow in the spiral climbing state increases the pressure inside the terminal filter, drives the movable sleeve to move downward, gradually reduces the channel for the water flow to enter the terminal filter, and controls the amount of water flow entering;

[0020] Step S4, during the cleaning process of the laminated filter group, open the seal and the drain port, close the water outlet, and let the water flow into the laminated filter group through the movable sleeve. The impurities between the laminated filter groups are flushed into the inner cavity between the laminated filter group and the shell with high-pressure water flow, and discharged through the drain port.

[0021] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0022] (1) The present invention provides a terminal filter for drip irrigation with a pressure regulating function. By setting a guide component and a cleaning component, the water flow entering the terminal filter rises in a spiral shape, and the spiral water flow is evenly dispersed in the laminated filter group for filtration through the guide component, which effectively avoids the accumulation of impurities on the laminated filter group and extends the service life of the laminated filter group. At the same time, in conjunction with the cleaning component, while the water flow is filtering, the water inlet and outlet can be automatically controlled according to the pressure in the terminal filter. While achieving high-efficiency filtration, the stability of the internal pressure of the terminal filter is guaranteed, thereby improving the stability of the water output.

[0023] (2) The present invention generates a spiral water flow through the setting of the guide component. The formation of the spiral water flow will generate centrifugal force, which will throw larger impurities in the water toward the outer wall of the filter. As the gap between the baffles gradually increases from bottom to top, the centrifugal effect of the spiral water flow and the baffle design can effectively guide larger particles to be discharged outward, thereby reducing the probability of them entering the stack, and can significantly reduce the blockage of the stack by large particles, thereby improving the filtering effect. At the same time, the spiral water flow cooperates with the vertical baffles and the widened gap, so that the water flow is more evenly distributed in the entire filter, avoiding excessive concentration of water flow in certain areas, ensuring that the surface of the filter stack can fully exert its filtering effect, which not only improves the overall filtering efficiency, but also prevents local pressure imbalance and reduces stack wear.

[0024] (3) The drip irrigation terminal filter with pressure regulation function of the present invention aims at the problems of unstable water pressure in mountain agricultural irrigation and high price of pressure compensation drip irrigation belt. According to the usage of the terminal filter, the pressure compensation device and backwashing function are combined with the terminal filter, and the hydraulic valve is used to control the distance of water flow through the filling filter material and the opening of the outlet, thereby realizing the filtration and pressure control of the irrigation water flow at the same time. At the same time, the system can also perform backwashing without changing the water inlet method, thereby improving the overall working efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 is a three-dimensional structural diagram of a preferred embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the internal structure of the terminal filter of a preferred embodiment of the present invention;

[0028] Figure 3 It is a preferred embodiment of the present invention Figure 2 The enlarged schematic diagram of point A in the middle;

[0029] Figure 4 is a schematic structural diagram of a flow guide assembly according to a preferred embodiment of the present invention;

[0030] In the figure: 1. shell; 2. end cover; 3. water outlet; 4. sewage outlet; 5. base; 6. drain filter; 7. water inlet; 8. fixed sleeve; 9. movable sleeve; 10. limit ring; 11. annular groove; 12. spring; 13. sealing cover; 14. flushing control rod; 15. fixed column; 16. baffle ring; 17. guide groove; 18. spiral guide plate; 19. bottom plate; 20. lamination; 21. spiral guide plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0035] like Figure 1 and Figure 2 As shown, a terminal filter for drip irrigation with a pressure regulating function comprises: a shell 1 and an end cover 2, a laminated filter group located inside the shell 1, a flow guide assembly surrounding the outside of the laminated filter group, and a cleaning assembly located in the middle of the laminated filter group; a water outlet 3 is arranged on the top of the shell 1, a sewage outlet 4 is arranged on the bottom, a base 5 is connected to the bottom, a mesh cover 6 is arranged in the middle of the base 5, and a water inlet 7 is arranged on the base 5;

[0036] like Figure 3 As shown, the cleaning assembly includes: a fixed sleeve 8 installed in the middle of the housing 1, a movable sleeve 9 sliding inside the fixed sleeve 8, a limiting ring 10 limiting the movement of the movable sleeve 9, and a sealing member closing the end of the fixed sleeve 8; both ends of the fixed sleeve 8 and the movable sleeve 9 are open, the fixed sleeve 8 is connected to the leakage filter sleeve 6, and an annular groove 11 is opened on the upper half of the movable sleeve 9, and a spring 12 is sleeved to drive the movable sleeve 9 to reset;

[0037] The flow guide assembly drives the water flow to rise in a spiral shape.

[0038] The water flows into the terminal filter through the water inlet 7, and is driven to rise in a spiral shape by the guide assembly. Since both ends of the movable sleeve 9 are open, a seal is provided at the open position of one end of the fixed sleeve 8. Part of the water flows through the movable sleeve 9 into the cavity between the limit ring 10 and the seal. The limit ring 10 is driven downward by the impact force of the water flow, and the spring 12 is compressed, so that the movable sleeve 9 gradually moves into the leakage net sleeve 6, and the channel for the water flow to enter the leakage net sleeve 6 is gradually reduced;

[0039] When cleaning the laminate 20 in the laminate filter group, it is necessary to separate the seal from the fixed sleeve 8, and the high-pressure water flow then enters the laminate filter group through the opening of the fixed sleeve 8, and the impurities between the laminate filter group are flushed into the inner cavity between the laminate filter group and the shell 1 by the high-pressure water flow, and discharged through the drain port 4, wherein the drain port 4 is arranged at the bottom of the cavity between the laminate filter group and the inner wall of the shell 1.

[0040] like Figure 4 As shown, in the present invention, the flow guide assembly includes: a plurality of fixed columns 15, and a plurality of baffle rings 16 installed on the plurality of fixed columns 15; the plurality of fixed columns 15 are fixedly installed inside the housing 1 and surround the outer side of the laminated filter group, the plurality of baffle rings 16 are vertically stacked and installed on the fixed columns 15, and a flow guide groove 17 is formed between adjacent baffle rings 16, and the width of the plurality of flow guide grooves 17 gradually increases from the bottom to the top;

[0041] The guide assembly also includes a spiral guide plate 18 ; the spiral guide plate 18 is fixedly mounted on the inner wall of the housing 1 to drive the water flow to climb upward.

[0042] By setting the spiral guide plate 18, the water entering the inner cavity of the shell 1 is guided to climb upward in a spiral state, so that the water flow path is extended in the process of passing through the filter, and the residence time of the water flow in the laminated filter group is increased. The water flows through more laminated layers 20, and impurities have more opportunities to be intercepted, thereby improving the filtering efficiency.

[0043] The baffle ring 16 is sleeved on the outer side of the laminated filter group, and cooperates with the guide groove 17 formed by the adjacent baffle ring 16 to block the linear impact path of the water flow, and redistribute the water flow to the guide groove 17. The guide groove 17 guides the diverted water flow to different areas of the laminated filter group in an orderly manner, ensuring that the water flow will not be concentrated in a certain area, but is evenly distributed on the laminated filter group, while reducing the concentrated impact of the water flow, avoiding certain areas from being subjected to excessive water flow pressure, and reducing the loss of the laminate 20;

[0044] At the same time, the water flow rises in a spiral. In the process of the water flow rotating and rising, the impurity particles are more easily centrifugally separated under the action of inertia and approach the filter wall.

[0045] In the present invention, the width of the plurality of guide grooves 17 tends to gradually increase from the bottom to the top. Since the water flow has a greater pressure at the bottom and the flow is relatively concentrated, the guide grooves 17 gradually widen during the rising process, which can release the pressure and ensure that the water flow rate decreases steadily. At the same time, the uniform distribution of the water flow is maintained, the pressure distribution in the filter is balanced, and the excessive wear of the laminate 20 caused by the high-pressure area is reduced. At the same time, the filtered impurities are more dispersed, avoiding the laminate 20 in a certain area from being subjected to excessive accumulation of impurities.

[0046] In the present invention, a filling filter material is arranged between the filter sleeve 6 and the base 5;

[0047] The base 5 is a tapered pipe structure, and the base 5 and the filter sleeve 6 are provided with a spiral drainage plate 21 , and the filter material is filled in the gap between the base 5 and the filter sleeve 6 .

[0048] The base 5 and the filter sleeve 6 are provided with a spiral guide plate 21, and the spiral direction of the spiral guide plate 21 is consistent with that of the spiral guide plate 18. The spiral guide plate 21 provides a certain spiral angle for the water flow just entering the terminal filter, so that when the water flow enters the inner wall of the housing 1, it can quickly cooperate with the spiral guide plate 18 in the housing 1 to spirally climb;

[0049] And by setting the filling filter material, the water flow is initially filtered.

[0050] In the present invention, the sealing member comprises: a sealing cover 13, and a flushing control rod 14 fixed on the top of the sealing cover 13; the flushing control rod 14 passes through the end cover 2, and the sealing cover 13 is installed at the top open position of the fixed sleeve 8, and cooperates with the water flow of the water inlet 7 to drive the movable sleeve 9 to move downward, thereby controlling the distance of the water flow passing through the filling filter material.

[0051] When the sealing cover 13 seals the top position of the fixed sleeve 8, water flows into the housing 1, and part of the water flows into the cavity between the limit ring 10 and the seal through the movable sleeve 9. The limit ring 10 is driven downward by the impact force of the water flow, and the spring 12 is compressed, so that the movable sleeve 9 gradually moves into the leakage net sleeve 6, and the channel for the water flow to enter the leakage net sleeve 6 is gradually reduced, thereby increasing the path for the water flow to pass through the filling filter material, and realizing the adjustment of the water pressure on the stack 20;

[0052] When it is necessary to clean the laminated sheets 20 in the laminated filter group, the sealing cover 13 is separated from the top position of the fixed sleeve 8 by the flushing control rod 14, the water outlet 3 is closed, and the drain outlet 4 is opened. The high-pressure water flow then enters the laminated filter group through the open opening of the fixed sleeve 8, and the impurities between the laminated filter groups are flushed into the inner cavity between the laminated filter group and the shell 1 by the high-pressure water flow, and discharged through the drain outlet 4, thereby cleaning the laminated filter group.

[0053] In the present invention, the laminated filter group includes: a bottom plate 19, a plurality of connecting columns located on the bottom plate 19, and a plurality of laminates 20 sleeved on the connecting columns; the middle fixed sleeve 8 of the bottom plate 19 is arranged on the outer wall of the fixed sleeve 8, and the bottom plate 19 is connected to the end cover 2 through the connecting columns.

[0054] In the present invention, a one-way valve is provided at the water outlet 3 .

[0055] An operating process of a drip irrigation terminal filter with a pressure regulating function comprises the following steps:

[0056] Step S1, water flows into the bottom of the terminal filter in a spiral shape, and rises in the terminal filter in a spiral shape;

[0057] Step S2, the water flow in the spiral climbing state evenly hits the guide component, and the guide component is dispersed on the laminated filter group to filter the water quality, and the filtered water flow is discharged through the water outlet 3;

[0058] Step S3, the water flow in the spiral climbing state increases the pressure inside the terminal filter, drives the movable sleeve 9 to move downward, gradually reduces the channel for the water flow to enter the terminal filter, and controls the amount of water flow entering;

[0059] Step S4, during the cleaning process of the laminated filter group, open the seal and the drain port 4, close the water outlet 3, and let the water flow into the laminated filter group through the movable sleeve 9. The impurities between the laminated filter groups are flushed into the inner cavity between the laminated filter group and the shell 1 with high-pressure water flow, and discharged through the drain port 4.

[0060] When the present invention is used, water flows into the terminal filter through the water inlet 7, and part of the water flows into the cavity between the limit ring 10 and the seal through the movable sleeve 9. The limit ring 10 is driven downward by the impact force of the water flow, and the spring 12 is compressed, so that the movable sleeve 9 gradually moves into the leakage net sleeve 6, and the channel for the water flow to enter the leakage net sleeve 6 is gradually reduced, thereby increasing the path of the water flow through the filling filter material. The water flows into the housing 1 through the spiral guide plate 21 and the spiral guide plate 18, and climbs upward in a spiral shape. The baffle ring 16 blocks the linear impact path of the water flow and redistributes the water flow to the guide groove 17. The guide groove 17 guides the diverted water flow to different areas of the laminated filter group in an orderly manner and discharges it through the water outlet 3.

[0061] When cleaning the laminate 20 in the laminate filter group, it is necessary to separate the seal from the fixed sleeve 8, and the high-pressure water flow then enters the laminate filter group through the opening of the fixed sleeve 8, and the impurities between the laminate filter group are flushed into the inner cavity between the laminate filter group and the shell 1 by the high-pressure water flow, and discharged through the drain port 4.

[0062] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A terminal filter for drip irrigation with pressure regulation function, comprising: A shell and an end cover, a laminated filter group located inside the shell, a flow guide assembly surrounding the outside of the laminated filter group, and a cleaning assembly located in the middle of the laminated filter group; characterized in that a water outlet is arranged at the top of the shell, a sewage outlet is arranged at the bottom, a base is connected to the bottom, a mesh sleeve is arranged in the middle of the base, and a water inlet is arranged on the base; The cleaning assembly comprises: a fixed sleeve installed in the middle of the shell, a movable sleeve located inside the fixed sleeve and sliding, a limiting ring for limiting the movement of the movable sleeve, and a sealing member for sealing the end of the fixed sleeve; both ends of the fixed sleeve and the movable sleeve are open, the fixed sleeve is connected with the leakage net sleeve, the upper half of the movable sleeve is provided with an annular groove, and is provided with a spring to drive the movable sleeve to reset; The flow guide component drives the water flow to rise in a spiral shape.

2. The drip irrigation terminal filter with pressure regulating function according to claim 1, characterized in that: Filling filter material is arranged between the leakage net sleeve and the base.

3. The drip irrigation terminal filter with pressure regulating function according to claim 1, characterized in that: The sealing member comprises: a sealing cover, and a flushing control rod fixed on the top of the sealing cover; the flushing control rod passes through the end cover, and the sealing cover is installed at the top open position of the fixed sleeve, and cooperates with the water flow of the water inlet to drive the movable sleeve to move downward, thereby controlling the distance of the water flow passing through the filling filter material.

4. The drip irrigation terminal filter with pressure regulating function according to claim 1, characterized in that: The guide assembly includes: a plurality of fixed columns, and a plurality of baffle rings installed on the fixed columns; the fixed columns are fixedly installed inside the shell and surround the outside of the laminated filter group, and the baffle rings are vertically stacked and installed on the fixed columns, and guide grooves are formed between adjacent baffle rings, and the widths of the guide grooves tend to gradually increase from bottom to top.

5. A drip irrigation terminal filter with pressure regulating function according to claim 1, characterized in that: The guide assembly further includes: a spiral guide plate; the spiral guide plate is fixedly mounted on the inner wall of the shell to drive the water flow to climb upward.

6. The terminal filter for drip irrigation with pressure regulation function according to claim 1, characterized in that: The laminated filter group includes: a bottom plate, a plurality of connecting columns located on the bottom plate, and a plurality of laminates sleeved on the connecting columns; the middle part of the bottom plate is fixedly sleeved on the outer wall of the fixed sleeve, and the bottom plate is connected to the end cover through the connecting columns.

7. The drip irrigation terminal filter with pressure regulating function according to claim 1, characterized in that: The base is a tapered pipe structure, and the base and the mesh sleeve are provided with a spiral drainage plate, and the filling filter material is filled in the gap between the base and the mesh sleeve.

8. The drip irrigation terminal filter with pressure regulating function according to claim 1, characterized in that: A one-way valve is arranged at the water outlet.

9. An operating process of a terminal filter for drip irrigation with a pressure regulating function, characterized in that: The following steps are involved: Step S1, water flows into the bottom of the terminal filter in a spiral shape, and rises in the terminal filter in a spiral shape; Step S2, the water flow in the spiral climbing state evenly hits the guide component, and the guide component is dispersed on the laminated filter group to filter the water quality, and the filtered water flow is discharged through the water outlet; Step S3, the water flow in the spiral climbing state increases the pressure inside the terminal filter, drives the movable sleeve to move downward, gradually reduces the channel for the water flow to enter the terminal filter, and controls the amount of water flow entering; Step S4, during the cleaning process of the laminated filter group, open the seal and the drain port, close the water outlet, and let the water flow into the laminated filter group through the movable sleeve. The impurities between the laminated filter groups are flushed into the inner cavity between the laminated filter group and the shell with high-pressure water flow, and discharged through the drain port.

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