Device and method for improving yield of old citrus orchard

Abstract

The invention discloses a device and method for improving the yield of an old citrus orchard, and belongs to the technical field of citrus orchard drip irrigation, the device comprises a conveying pipeline and a plurality of drip irrigation units uniformly arranged on the conveying pipeline, each drip irrigation unit comprises a water outlet pipe connected to the conveying pipeline, and the output end of each water outlet pipe is connected with a drip irrigation housing. Dual filtration treatment of drip irrigation water is achieved through a soft filter membrane assembly and an inner annular filter plate which are arranged in the drip irrigation unit, and after the soft filter membrane assembly in the drip irrigation unit is blocked and normal water outlet of the drip irrigation unit is affected, when the hydraulic pressure of an inner cavity of a drip irrigation housing is larger than a first preset critical upper limit, the drip irrigation water is filtered; the folding compensation structure drives the annular sealing seat to move, then the annular sealing seat drives the folding compensation structure to be gradually converted into an unfolded state from a contracted state, and drip irrigation water flows out of the drip irrigation holes after being filtered by the unfolded folding compensation structure. And active water outlet compensation for water outlet quantity reduction caused by filtering blockage in the drip irrigation process is realized.

Description

Technical Field

[0001] This application relates to the technical field of drip irrigation for citrus orchards. More specifically, it relates to a device and method for increasing the yield of old citrus orchards. Background Art

[0002] Most old citrus orchards show the following problems: the varieties are aging, not suitable for market demand, and the output value of citrus is low; the cultivation techniques are traditional, and the yield and quality of citrus decline year by year; the orchard ecology deteriorates, the stress resistance is weak, disasters occur frequently, and the production capacity and efficiency are low.

[0003] Since the old citrus trees in old citrus orchards are weak, through the drip irrigation system, the application amount and time of fertilizers can be accurately controlled. This precise fertilization method can not only reduce the loss and waste of fertilizers, but also improve the utilization rate of fertilizers, which is beneficial to the respiration and nutrient absorption of the roots of old citrus trees, promotes the healthy growth of old citrus trees, and increases the citrus yield.

[0004] When drip irrigation operation is carried out on old citrus trees in old citrus orchards through the drip irrigation system, since the water outlet aperture of the drip irrigation heads in the drip irrigation system is relatively small, it is often necessary to filter out impurities such as particulate matter or suspended matter contained in the drip irrigation water through a filtering structure such as a filter screen arranged in the drip irrigation head to avoid clogging of the drip irrigation heads in the drip irrigation system.

[0005] During the drip irrigation operation of old citrus trees in old citrus orchards through the traditional drip irrigation system, since the clogging of the filtering structure in the drip irrigation head of the drip irrigation system is often a gradual process, initially it may only be a slight clogging, and the influence on the water output is not obvious. However, as the clogging degree increases, the water output will gradually decrease. However, due to the gradual clogging process of the filtering structure in the above-mentioned drip irrigation head, it is often difficult for people to detect the abnormality in time when the drip irrigation head is clogged. Since the water volume passing through the drip irrigation head will be significantly reduced or even stagnant after the drip irrigation head is clogged, it is easy to cause uneven distribution of irrigation water in the old citrus orchard by the drip irrigation system, resulting in some areas in the old citrus orchard may get too much water, while some other areas may not get enough water, affecting the overall growth condition of the fruit trees in the old citrus orchard, and further causing a decrease in the citrus yield.

[0006] In view of this, we propose a device and method for increasing the yield of old citrus orchards. Summary of the Invention

[0007] Technical Problem to be Solved: The purpose of this application is to provide a device and method for increasing the yield of old citrus orchards, which solves the technical problems raised in the above background art.

[0008] Technical solution: The technical solution of this application provides a device for increasing the yield of old citrus orchards, including a delivery pipeline and a plurality of drip irrigation units evenly arranged on the delivery pipeline. The drip irrigation unit includes a water outlet pipe connected to the delivery pipeline. A drip irrigation cover is connected to the output end of the water outlet pipe. A drip irrigation top cover is detachably covered at the end opening of the drip irrigation cover. A plurality of drip irrigation holes are evenly arranged on the drip irrigation top cover;

[0009] A filtering structure is provided inside the drip irrigation cover. The filtering structure includes a shunt sealing plate slidably and sealingly connected to the inner cavity of the drip irrigation cover. An annular sealing seat is arranged above the shunt sealing plate. One end of the annular sealing seat far from the inner annular filter plate is connected with an annular sealing gasket. An inner annular filter plate and a flexible filter membrane assembly are respectively arranged between the shunt sealing plate and the annular sealing seat. The flexible filter membrane assembly is arranged around the outer periphery of the inner annular filter plate. A plurality of through holes are evenly arranged on the shunt sealing plate and are arranged around the outer periphery of the flexible filter membrane assembly. A plurality of first spring telescopic rods are evenly connected to the bottom of the shunt sealing plate;

[0010] A folding compensation structure cooperating with the flexible filter membrane assembly is also arranged on the annular sealing seat. A transparent observation plate is also arranged on the side wall of the drip irrigation cover.

[0011] As an optional solution of the technical solution of this application document, a positioning protrusion is connected to the bottom of the first spring telescopic rod. A positioning cavity for the positioning protrusion to slide and insert therein is opened at the position corresponding to each positioning protrusion on the bottom wall of the inner cavity of the drip irrigation cover.

[0012] As an optional solution of the technical solution of this application document, the inner annular filter plate is connected between the shunt sealing plate and the annular sealing seat.

[0013] As an optional solution of the technical solution of this application document, the flexible filter membrane assembly includes a lower annular flexible filter cloth layer and a guiding channel. The initial state of the lower annular flexible filter cloth layer is a straightened state. The top end of the lower annular flexible filter cloth layer is connected with an installation ring seat. A horizontal groove is opened on the side wall of the installation ring seat. A limit clamping rod is slidably inserted in the horizontal groove;

[0014] A first spring is also arranged in the horizontal groove. One end of the first spring is connected to the end of the limit clamping rod, and the other end is connected to the end of the horizontal groove;

[0015] A buckling groove is opened at the top of the end of the limit clamping rod far from the first spring;

[0016] A bottom limit ring is also connected to one end of the installation ring seat close to the lower annular flexible filter cloth layer. A plurality of pulling springs are evenly connected to the bottom of the bottom limit ring.

[0017] As an optional solution of the technical solution of this application document, one end of the lower annular flexible filter cloth layer far from the installation ring seat is connected to the shunt sealing plate;

[0018] One end of the pulling spring away from the bottom limit ring is connected to the flow splitting sealing plate;

[0019] An embedding groove for the installation ring seat to be hermetically and slidably inserted therein is provided at one end of the annular sealing seat close to the inner annular filter plate.

[0020] As an alternative solution of the technical solution of this application document, the folding compensation structure includes a hydraulic sensing component, a sealing diaphragm, an annular blocking seat, an upper passive plug body, a lower intercepting net, and a water-absorbing and expanding particle layer arranged between the upper passive plug body and the lower intercepting net;

[0021] A second spring telescopic rod is connected to the bottom of the lower intercepting net. One end of the second spring telescopic rod away from the lower intercepting net is connected to a frustum seat. A thimble for piercing the film is connected to one end of the frustum seat away from the second spring telescopic rod. A traction rod is connected between the annular blocking seat and the upper passive plug body. An upper annular shrinking and filtering part with a plurality of filter holes evenly formed thereon is connected to the annular blocking seat. The upper annular shrinking and filtering part is in the shape of a corrugated telescopic pipe, and the initial state of the upper annular shrinking and filtering part is a shrunk state;

[0022] An L-shaped pin rod is connected to the side wall of the traction rod.

[0023] As an alternative solution of the technical solution of this application document, an annular receiving cavity for accommodating the upper annular shrinking and filtering part is provided at one end of the annular sealing seat away from the inner annular filter plate. The annular blocking seat is hermetically and slidably connected in the annular receiving cavity. One end of the upper annular shrinking and filtering part away from the annular blocking seat is connected to the bottom wall of the annular receiving cavity;

[0024] A liquid sealing groove communicating with the annular receiving cavity is formed at one end of the annular sealing seat close to the inner annular filter plate. One end of the guiding channel communicates with the end of the embedding groove, and the other end communicates with the liquid sealing groove;

[0025] The sealing diaphragm is connected to the inner opening of the end of the liquid sealing groove;

[0026] The lower intercepting net is fixedly connected in the liquid sealing groove. The upper passive plug body is hermetically and slidably connected in the liquid sealing groove. One end of the traction rod away from the upper passive plug body extends into the annular receiving cavity from the liquid sealing groove and is connected to the annular blocking seat;

[0027] The initial state of the first spring is a stretched state. When the first spring is in the initial stretched state, one end of the limit clamping rod away from the first spring slides into the interior of the liquid sealing groove, and one end of the L-shaped pin rod away from the traction rod is buckled in the buckle groove on the limit clamping rod.

[0028] As an alternative embodiment of the technical solution of this application document, the hydraulic sensing component includes a pressure relief passage, a reciprocating piston, a pressure relief piston, a moving switch terminal, and a static switch terminal. One end of the reciprocating piston is connected with a pushing rod, and a second spring is sleeved outside the pushing rod;

[0029] The pressure relief piston is connected with a third spring;

[0030] A battery chamber is provided at one end of the reciprocating piston away from the pushing rod. A power supply battery is installed in the battery chamber. An alarm lamp and a transparent waterproof cover are also connected to one end of the reciprocating piston close to the power supply battery, and the transparent waterproof cover covers the outer peripheries of the alarm lamp and the power supply battery.

[0031] As an alternative embodiment of the technical solution of this application document, an airtight chamber is provided at the position corresponding to the side wall of the annular sealing seat and the frustum seat, and the reciprocating piston is hermetically and slidably connected in the airtight chamber;

[0032] One end of the pushing rod away from the reciprocating piston hermetically passes through the end of the airtight chamber and extends into the liquid sealing groove. When the second spring is in the initial relaxed state, the end of the pushing rod abuts against the side wall of the frustum seat;

[0033] One end of the second spring is connected to the end of the reciprocating piston, and the other end is connected to the end of the airtight chamber;

[0034] The moving switch terminal is connected to one end of the reciprocating piston close to the pushing rod, the static switch terminal is connected to the end of the airtight chamber, and the moving switch terminal and the static switch terminal are arranged opposite to each other;

[0035] An exhaust pressure chamber communicating with the airtight chamber is provided inside the annular sealing seat. The pressure relief piston is hermetically and slidably connected in the exhaust pressure chamber, and one end of the third spring away from the pressure relief piston is connected to the end of the exhaust pressure chamber;

[0036] One end of the pressure relief passage is communicated with the end of the exhaust pressure chamber, and the other end penetrates through the side wall of the annular sealing seat;

[0037] The positive electrode of the power supply battery is connected to the input end of the alarm lamp through a wire, the negative electrode of the power supply battery is connected to the moving switch terminal through a wire, and the output end of the alarm lamp is connected to the static switch terminal through a wire. When the moving switch terminal contacts the static switch terminal, the alarm lamp is triggered to turn on.

[0038] The technical solution of this application provides a usage method of a device for increasing the yield of old citrus orchards, including the following steps:

[0039] S1. The drip irrigation water for the old citrus orchard flows into the inner part of the water outlet pipe of the drip irrigation unit through the conveying pipeline;

[0040] S2. After the water passes through the through holes in the shunt sealing plate, it is filtered through the double barriers of the flexible filter membrane assembly and the inner annular filter plate, and then flows out through the drip irrigation holes on the drip irrigation top cover to achieve drip irrigation treatment for old citrus fruit trees.

[0041] S3. When the flexible filter membrane assembly in the drip irrigation unit is gradually blocked and affects the normal water output of the drip irrigation unit, the hydraulic pressure in the inner cavity of the drip irrigation housing gradually increases.

[0042] S4. When the hydraulic pressure in the inner cavity of the drip irrigation housing is greater than the first preset critical upper limit, the folding compensation structure is driven to move the annular sealing seat. During the movement of the annular sealing seat, the annular sealing seat drives the folding compensation structure to gradually change from the contracted state to the unfolded state. The drip irrigation water is finally filtered through the unfolded folding compensation structure and then flows out through the drip irrigation holes, realizing the active water output compensation for the reduction in water output caused by filter blockage during the drip irrigation process.

[0043] Beneficial effects: One or more of the technical solutions provided in the technical solution of the present application have at least the following technical effects or advantages: 1. The drip irrigation water for the old citrus orchard flows into the inner part of the water outlet pipe of the drip irrigation unit through the conveying pipeline, and is then double-filtered by the flexible filter membrane assembly and the inner annular filter plate arranged in the drip irrigation unit. The filtered drip irrigation water then flows out through the drip irrigation holes on the drip irrigation top cover to achieve drip irrigation treatment for old citrus fruit trees.

[0044] 2. When the flexible filter membrane assembly in the drip irrigation unit is blocked and affects the normal water output of the drip irrigation unit, the hydraulic pressure in the inner cavity of the drip irrigation housing gradually increases. When the hydraulic pressure in the inner cavity of the drip irrigation housing is greater than the first preset critical upper limit, the push rod in the hydraulic sensing component is driven to move horizontally. The horizontally moving push rod drives the thorn membrane needle to move downward through the conical seat and pierce the sealing membrane. After the drip irrigation water enters the internal sealing liquid tank and contacts the water-absorbing and expanding particle layer, the water-absorbing and expanding particle layer whose water absorption volume gradually expands drives the annular sealing seat to move in the opposite direction of the annular blocking seat, so that the moving annular sealing seat gradually drives the upper annular contracted filtering part to extend out of the annular storage cavity and gradually unfold. The water is filtered through the unfolded upper annular contracted filtering part and then flows out through the drip irrigation holes, enabling the drip irrigation unit to quickly return to normal water output, realizing the active water output compensation for the reduction in water output caused by filter blockage during the drip irrigation process, avoiding the uneven distribution of irrigation water caused by the reduction in water output due to the blockage of the filter structure of the drip irrigation unit during the irrigation of the old citrus orchard, enabling the irrigation water to be evenly distributed in the old citrus orchard, which is beneficial to improving the uniformity of the overall growth of the fruit trees in the old citrus orchard, and thus beneficial to increasing the yield of citrus in the old citrus orchard.

[0045] 3. During the process that the water-swellable particle layer that undergoes water absorption and swelling drives the annular sealing seat to move in the opposite direction of the annular baffle seat, the end of the L-shaped pin rod will disengage from the buckle groove again. Under the elastic pulling force of the first spring, the limit latch rod quickly retracts into the horizontal groove. Under the elastic pulling force of the pulling spring, the installation ring seat disengages from the embedding groove, causing the soft filter membrane assembly that initially filters water and is blocked to be pulled down by the pulling spring, and exposing the inner annular filter plate, eliminating the initial barrier for filtering drip irrigation water, enabling the drip irrigation water to directly flow out from the drip irrigation holes after being filtered by the unfolded upper annular shrinkage filtering part, and at the same time, further shortening the time required for the drip irrigation unit to resume normal water discharge through the exposed inner annular filter plate, enabling the blocked drip irrigation unit to quickly resume the normal water discharge state within a short time, thereby being beneficial to further improving the active water discharge compensation effect of the drip irrigation unit.

[0046] 4. When the inner annular filter plate and the unfolded upper annular shrinkage filtering part are blocked again during the drip irrigation operation and again affect the normal water discharge of the drip irrigation unit, as the hydraulic pressure in the inner cavity of the drip irrigation housing continuously increases and exceeds the second preset critical upper limit, when the water pressure pushes the reciprocating piston, the moving switch terminal moves towards the static switch terminal. When the moving switch terminal contacts the static switch terminal, it triggers the alarm lamp to turn on. The light generated after the alarm lamp turns on can be quickly detected by the staff after passing through the transparent observation plate. When the staff observes the light generated when the alarm lamp turns on through the transparent observation plate, they can quickly judge that the drip irrigation unit has a serious blockage fault at this time and needs to promptly replace the filtering structure in the drip irrigation unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall structure of this application.

[0048] Figure 2 It is a schematic diagram of the structure of the drip irrigation unit in this application.

[0049] Figure 3 It is a partially enlarged schematic diagram of the drip irrigation unit in this application.

[0050] Figure 4 For this application Figure 3 It is a partially enlarged schematic diagram of part A in this application.

[0051] Figure 5 For this application Figure 3 It is a partially enlarged schematic diagram of part B in this application.

[0052] Description of reference numerals in the figure: 100, conveying pipeline; 201, drip irrigation housing; 202, drip irrigation top cover; 203, shunt sealing plate; 204, water-absorbing and swelling particle layer; 205, inner annular filter plate; 206, lower annular flexible filter cloth layer; 207, pulling spring; 208, annular sealing seat; 209, mounting ring seat; 210, upper annular shrinking filter part; 211, annular blocking seat; 212, transparent observation plate; 213, moving switch terminal; 214, annular sealing gasket; 215, bottom limiting ring; 216, limiting clamping rod; 217, L-shaped pin rod; 218, traction rod; 219, frustum seat; 220, film puncturing needle; 221, sealing diaphragm; 222, static switch terminal; 223, lower intercepting net; 224, upper passive plug body; 225, pushing rod; 226, pressure relief piston; 227, reciprocating piston; 228, power supply battery; 229, alarm lamp; 230, transparent waterproof cover. Detailed implementation manners

[0053] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0054] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 thus should not be construed as a limitation to the present application.

[0055] In the description of the present application, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0056] Refer to Figure 1 and Figure 2, an embodiment of the present application provides a device for increasing the yield of old citrus orchards, including a delivery pipeline 100 and a plurality of drip irrigation units uniformly arranged on the delivery pipeline 100. The drip irrigation unit includes a water outlet pipe connected to the delivery pipeline 100. A drip irrigation housing 201 is connected to the output end of the water outlet pipe. A drip irrigation top cover 202 is detachably covered at the end opening of the drip irrigation housing 201. A plurality of drip irrigation holes are uniformly opened on the drip irrigation top cover 202. The detachable connection method is realized by means of threaded connection or snap connection;

[0057] A filtering structure is arranged inside the drip irrigation housing 201. The filtering structure includes a flow splitting and sealing plate 203 hermetically and slidably connected to the inner cavity of the drip irrigation housing 201. An annular sealing seat 208 is arranged above the flow splitting and sealing plate 203. One end of the annular sealing seat 208 far from the inner annular filter plate 205 is connected with an annular sealing gasket 214. An inner annular filter plate 205 and a soft filter membrane assembly are respectively arranged between the flow splitting and sealing plate 203 and the annular sealing seat 208. The soft filter membrane assembly is arranged around the outer circumference of the inner annular filter plate 205. The inner annular filter plate 205 is connected between the flow splitting and sealing plate 203 and the annular sealing seat 208. A plurality of through holes uniformly arranged around the outer circumference of the soft filter membrane assembly are also opened on the flow splitting and sealing plate 203. A plurality of first spring telescopic rods are uniformly connected to the bottom of the flow splitting and sealing plate 203;

[0058] A folding compensation structure cooperating with the soft filter membrane assembly is also arranged on the annular sealing seat 208. A transparent observation plate 212 is also arranged on the side wall of the drip irrigation housing 201.

[0059] The drip irrigation water for old citrus orchards flows into the water outlet pipe of the drip irrigation unit from the delivery pipeline 100, and then the soft filter membrane assembly and the inner annular filter plate 205 arranged in the drip irrigation unit realize double filtration treatment of the drip irrigation water. The filtered drip irrigation water then flows out from the drip irrigation holes on the drip irrigation top cover 202 to realize the drip irrigation treatment of old citrus fruit trees.

[0060] Refer to Figure 2 and Figure 3 , an embodiment of the present application provides a device for increasing the yield of old citrus orchards. The soft filter membrane assembly includes a lower annular flexible filter cloth layer 206 and a guiding channel. The initial state of the lower annular flexible filter cloth layer 206 is a straightened state. The top end of the lower annular flexible filter cloth layer 206 is connected with an installation ring seat 209. One end of the lower annular flexible filter cloth layer 206 far from the installation ring seat 209 is connected with the flow splitting and sealing plate 203;

[0061] A horizontal groove is opened on the side wall of the installation ring seat 209. The horizontal groove is of a cuboid structure. A limiting clamping rod 216 is slidably inserted into the horizontal groove. The limiting clamping rod 216 is also of a cuboid structure;

[0062] A first spring is further provided in the horizontal groove, and one end of the first spring is connected to the end of the limit clamping rod 216, and the other end is connected to the end of the horizontal groove;

[0063] A buckling groove is formed at the top of the end of the limit clamping rod 216 away from the first spring;

[0064] One end of the mounting ring seat 209 close to the lower annular flexible filter cloth layer 206 is further connected with a bottom limit ring 215, and a plurality of pulling springs 207 are uniformly connected to the bottom of the bottom limit ring 215. One end of the pulling spring 207 away from the bottom limit ring 215 is connected to the shunt sealing plate 203;

[0065] An embedding groove for the mounting ring seat 209 to be hermetically and slidably inserted therein is provided at one end of the annular sealing seat 208 close to the inner annular filter plate 205.

[0066] Refer to Figure 3 and Figure 4 and, an embodiment of the present application provides a device for improving the yield of old citrus orchards. The folding compensation structure includes a hydraulic sensing component, a sealing diaphragm 221, an annular blocking seat 211, an upper passive plug body 224, a lower interception net 223, and a water-absorbing and swelling particle layer 204 arranged between the upper passive plug body 224 and the lower interception net 223. The water-absorbing and swelling particles in the water-absorbing and swelling particle layer 204 are made of water-absorbing resin, and the mesh aperture of the lower interception net 223 is smaller than the outer diameter of the water-absorbing and swelling particles in the water-absorbing and swelling particle layer 204;

[0067] A second spring telescopic rod is connected to the bottom of the lower interception net 223. One end of the second spring telescopic rod away from the lower interception net 223 is connected with a frustum seat 219, and one end of the frustum seat 219 away from the second spring telescopic rod is connected with a thorn film needle 220. A traction rod 218 is connected between the annular blocking seat 211 and the upper passive plug body 224. An upper annular shrinkage filtering part 210 with a plurality of filter holes uniformly formed thereon is connected to the annular blocking seat 211. The upper annular shrinkage filtering part 210 is in the shape of a corrugated telescopic pipe, and the initial state of the upper annular shrinkage filtering part 210 is a contracted state. The upper annular shrinkage filtering part 210 is preferably made of a silicone material;

[0068] An L-shaped pin rod 217 is connected to the side wall of the traction rod 218;

[0069] An annular storage cavity for accommodating the upper annular shrinkage filtering part 210 is provided at one end of the annular sealing seat 208 away from the inner annular filter plate 205, and the annular blocking seat 211 is hermetically and slidably connected in the annular storage cavity. One end of the upper annular shrinkage filtering part 210 away from the annular blocking seat 211 is connected to the bottom wall of the annular storage cavity;

[0070] An end of the annular sealing seat 208 close to the inner annular filter plate 205 is provided with a liquid sealing groove communicating with the annular storage cavity, and one end of the guiding channel communicates with the end of the embedding groove, and the other end communicates with the liquid sealing groove;

[0071] The sealing diaphragm 221 is connected inside the opening at the end of the liquid sealing groove;

[0072] The lower intercepting net 223 is fixedly connected inside the liquid sealing groove, the upper passive plug body 224 is hermetically and slidably connected in the liquid sealing groove, and one end of the traction rod 218 away from the upper passive plug body 224 extends from the liquid sealing groove into the annular storage cavity and is connected to the annular blocking seat 211;

[0073] The initial state of the first spring is a stretched state, and when the first spring is in the initial stretched state, the end of the limit clamping rod 216 away from the first spring slides into the interior of the liquid sealing groove, and the end of the L-shaped pin rod 217 away from the traction rod 218 is buckled in the buckle groove on the limit clamping rod 216.

[0074] When the flexible filter membrane assembly in the drip irrigation unit is blocked and affects the normal water output of the drip irrigation unit, the hydraulic pressure in the inner cavity of the drip irrigation housing 201 gradually increases. When the hydraulic pressure in the inner cavity of the drip irrigation housing 201 is greater than the first preset critical upper limit, the push rod 225 in the hydraulic sensing component is driven to move horizontally. The horizontally moving push rod 225 drives the thimble 220 to move downward through the conical seat 219 and pierce the sealing diaphragm 221. After the drip irrigation water enters the interior of the liquid sealing groove and contacts the water-absorbing and swelling particle layer 204, the water-absorbing and swelling particle layer 204 whose water-absorbing volume gradually expands drives the annular sealing seat 208 to move in the opposite direction to the annular blocking seat 211, so that the moving annular sealing seat 208 gradually drives the upper annular shrinking and filtering part 210 to extend out of the annular storage cavity and gradually unfold. The water is filtered by the unfolded upper annular shrinking and filtering part 210 and then flows out through the drip irrigation holes, enabling the drip irrigation unit to quickly resume normal water output again, realizing the active water output compensation for the reduction in water output caused by filter blockage during the drip irrigation process, avoiding the uneven distribution of irrigation water caused by the reduction in water output due to the blockage of the filtering structure of the drip irrigation unit during the irrigation of citrus old orchards, enabling the irrigation water to be evenly distributed in the citrus old orchards, being beneficial to improving the uniformity of the overall growth of fruit trees in the citrus old orchards, and thus being beneficial to increasing the yield of citrus in the citrus old orchards.

[0075] During the process that the water-swellable particle layer 204 which undergoes water absorption and swelling drives the annular seal seat 208 to move in the opposite direction of the annular blocking seat 211, the end of the L-shaped pin rod 217 will disengage from the buckle groove. Under the elastic tensile force of the first spring, the limit clamping rod 216 quickly retracts into the horizontal groove. Under the elastic tensile force of the pulling spring 207, the mounting ring seat 209 disengages from the embedding groove, so that the soft filter membrane assembly which conducts primary filtration of water and is blocked is pulled down by the pulling spring 207, and the inner annular filter plate 205 is exposed, eliminating the primary barrier for filtering drip irrigation water. While allowing the drip irrigation water to directly flow out through the drip holes after being filtered by the unfolded upper annular contraction filtering part 210, it can also further shorten the time required for the drip irrigation unit to resume normal water output through the exposed inner annular filter plate 205, enabling the blocked drip irrigation unit to quickly resume the normal water output state within a short time, thereby being beneficial to further improving the active water output compensation effect of the drip irrigation unit.

[0076] Refer to Figure 3 and Figure 5 , an embodiment of the present application provides a device for improving the yield of old citrus orchards. The hydraulic sensing component includes a pressure relief channel, a reciprocating piston 227, a pressure relief piston 226, a moving switch terminal 213, and a static switch terminal 222. One end of the reciprocating piston 227 is connected with a pushing rod 225, and a second spring is sleeved outside the pushing rod 225;

[0077] The pressure relief piston 226 is connected with a third spring;

[0078] A battery chamber is provided at the end of the reciprocating piston 227 away from the pushing rod 225. A power supply battery 228 is installed in the battery chamber. An alarm lamp 229 and a transparent waterproof cover 230 are also connected to the end of the reciprocating piston 227 close to the power supply battery 228, and the transparent waterproof cover 230 covers the outer peripheries of the alarm lamp 229 and the power supply battery 228;

[0079] An airtight chamber is provided at the position corresponding to the side wall of the annular seal seat 208 and the frustum seat 219, and the reciprocating piston 227 is hermetically slidably connected in the airtight chamber;

[0080] One end of the pushing rod 225 away from the reciprocating piston 227 hermetically passes through the end of the airtight chamber and extends into the liquid sealing groove. And when the second spring is in the initial relaxed state, the end of the pushing rod 225 abuts against the side wall of the frustum seat 219;

[0081] One end of the second spring is connected to the end of the reciprocating piston 227, and the other end is connected to the end of the airtight chamber;

[0082] The moving switch terminal 213 is connected to one end of the reciprocating piston 227 close to the pushing rod 225. The static switch terminal 222 is connected to the end of the airtight cavity, and the moving switch terminal 213 and the static switch terminal 222 are arranged opposite to each other;

[0083] An exhaust pressure chamber communicating with the airtight cavity is provided inside the annular sealing seat 208. The pressure relief piston 226 is hermetically and slidably connected inside the exhaust pressure chamber, and one end of the third spring away from the pressure relief piston 226 is connected to the end of the exhaust pressure chamber;

[0084] One end of the pressure relief channel communicates with the end of the exhaust pressure chamber, and the other end penetrates through the side wall of the annular sealing seat 208;

[0085] The positive electrode of the power supply battery 228 is connected to the input end of the alarm lamp 229 through a wire. The negative electrode of the power supply battery 228 is connected to the moving switch terminal 213 through a wire. The output end of the alarm lamp 229 is connected to the static switch terminal 222 through a wire. And when the moving switch terminal 213 contacts the static switch terminal 222, the series circuit formed by the power supply battery 228, the alarm lamp 229, the moving switch terminal 213 and the static switch terminal 222 is turned on, and the alarm lamp 229 is triggered to turn on.

[0086] When the inner annular filter plate 205 and the unfolded upper annular shrinkage filtering part 210 are blocked again during the drip irrigation operation and affect the normal water output of the drip irrigation unit again, as the hydraulic pressure in the inner cavity of the drip irrigation housing 201 continuously increases and exceeds the second preset critical upper limit, during the process of the water pressure pushing the reciprocating piston 227, the moving switch terminal 213 moves towards the static switch terminal 222. When the moving switch terminal 213 contacts the static switch terminal 222, the alarm lamp 229 is triggered to turn on. The light generated after the alarm lamp 229 is turned on can be quickly discovered by the staff after passing through the transparent observation plate 212. When the staff observes the light generated when the alarm lamp 229 is turned on through the transparent observation plate 212, it can be quickly judged that the drip irrigation unit has a serious blockage fault at this time, and the filtering structure in the drip irrigation unit needs to be replaced in time.

[0087] Refer to Figure 2 In this embodiment of the application, a device for improving the yield of old citrus orchards is provided. A positioning protrusion is connected to the bottom of the first spring telescopic rod, and a positioning cavity for the positioning protrusion to slide and insert therein is provided at each position corresponding to the positioning protrusion on the bottom wall of the inner cavity of the drip irrigation housing 201.

[0088] After placing the filtering structure into the inner cavity of the drip irrigation housing 201, through the limiting effect of the positioning groove on the positioning protrusion connected to the bottom of the first spring telescopic rod, the alarm lamp 229 in the hydraulic sensing component can be directly opposite to the transparent observation plate 212, so that when the alarm lamp 229 is turned on, the light generated when the alarm lamp 229 lights up can pass through the transparent observation plate 212, facilitating the staff to observe.

[0089] The embodiment of the present application provides a method for using a device for increasing the yield of old citrus orchards, including the following steps:

[0090] S1. The drip irrigation water for the old citrus orchard flows into the inner part of the water outlet pipe of the drip irrigation unit through the conveying pipeline 100;

[0091] S2. After the water passes through the through holes on the shunt sealing plate 203 and is filtered by the double barriers of the soft filter membrane assembly and the inner annular filter plate 205 respectively, it then flows out from the drip irrigation holes on the drip irrigation top cover 202, realizing the drip irrigation treatment of the old citrus fruit trees.

[0092] S3. When the soft filter membrane assembly in the drip irrigation unit is gradually blocked and affects the normal water outlet of the drip irrigation unit, the hydraulic pressure in the inner cavity of the drip irrigation housing 201 gradually increases;

[0093] S4. When the hydraulic pressure in the inner cavity of the drip irrigation housing 201 is greater than the first preset critical upper limit, the folding compensation structure is driven to move the annular sealing seat 208, and during the movement of the annular sealing seat 208, the folding compensation structure driven by the annular sealing seat 208 gradually changes from the contracted state to the unfolded state. After the drip irrigation water is filtered by the unfolded folding compensation structure, it finally flows out from the drip irrigation holes, realizing the active water outlet compensation for the reduction of the water outlet volume caused by filter blockage during the drip irrigation process.

[0094] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for increasing the yield of old citrus orchards, characterized in that: The invention comprises a delivery pipeline (100) and a plurality of drip irrigation units evenly arranged on the delivery pipeline (100), wherein the drip irrigation unit comprises a water outlet pipe connected to the delivery pipeline (100), the output end of the water outlet pipe is connected to a drip irrigation housing (201), the end opening of the drip irrigation housing (201) is detachably covered with a drip irrigation top cover (202), and a plurality of drip irrigation holes are evenly opened on the drip irrigation top cover (202); The drip irrigation housing (201) is provided with a filtering structure inside, and the filtering structure includes a flow-dividing sealing plate (203) which is sealingly and slidably connected to the inner cavity of the drip irrigation housing (201), an annular sealing seat (208) is provided above the flow-dividing sealing plate (203), and an annular sealing gasket (214) is connected to one end of the annular sealing seat (208) away from the inner annular filter plate (205), and an inner annular filter plate (205) and a soft filter membrane assembly are respectively provided between the flow-dividing sealing plate (203) and the annular sealing seat (208), and the soft filter membrane assembly is arranged around the outer periphery of the inner annular filter plate (205), and a plurality of through holes arranged around the outer periphery of the soft filter membrane assembly are evenly opened on the flow-dividing sealing plate (203), and a plurality of first spring telescopic rods are evenly connected to the bottom of the flow-dividing sealing plate (203); The annular sealing seat (208) is also provided with a folding compensation structure that cooperates with the soft filter membrane assembly, and the side wall of the drip irrigation housing (201) is also provided with a transparent observation panel (212).

2. The device for increasing the yield of old citrus orchards according to claim 1, characterized in that: The bottom of the first spring telescopic rod is connected to a positioning protrusion, and a positioning cavity is provided on the bottom wall of the inner cavity of the drip irrigation housing (201) at a position corresponding to each positioning protrusion, into which the positioning protrusion can be slidably inserted.

3. The device for increasing the yield of old citrus orchards according to claim 1, characterized in that: The inner annular filter plate (205) is connected between the flow dividing sealing plate (203) and the annular sealing seat (208).

4. The device for increasing the yield of old citrus orchards according to claim 1, characterized in that: The soft filter membrane assembly comprises a lower annular flexible filter cloth layer (206) and a guide channel, and the initial state of the lower annular flexible filter cloth layer (206) is a stretched state, the top of the lower annular flexible filter cloth layer (206) is connected to a mounting ring seat (209), a horizontal groove is provided on the side wall of the mounting ring seat (209), and a limit clamping rod (216) is slidably inserted in the horizontal groove; A first spring is also provided in the horizontal groove, and one end of the first spring is connected to the end of the limit clamping rod (216), and the other end of the first spring is connected to the end of the horizontal groove; A buckle groove is formed on the top of the limiting clamping rod (216) away from one end of the first spring; A bottom limiting ring (215) is also connected to one end of the mounting ring seat (209) close to the lower annular flexible filter cloth layer (206), and a plurality of pulling springs (207) are evenly connected to the bottom of the bottom limiting ring (215).

5. The device for increasing the yield of old citrus orchards according to claim 4, characterized in that: One end of the lower annular flexible filter cloth layer (206) away from the mounting ring seat (209) is connected to the flow dividing sealing plate (203); One end of the pulling spring (207) away from the bottom limiting ring (215) is connected to the flow dividing sealing plate (203); An embedding groove is provided on one end of the annular sealing seat (208) close to the inner annular filter plate (205), into which the mounting ring seat (209) can be inserted and slidably sealed.

6. The device for increasing the yield of old citrus orchards according to claim 4, characterized in that: The folding compensation structure comprises a hydraulic sensing component, a sealing diaphragm (221), an annular blocking seat (211), an upper passive plug body (224), a lower interception net (223), and a water-absorbing and swelling particle layer (204) arranged between the upper passive plug body (224) and the lower interception net (223); The bottom of the lower intercepting net (223) is connected to a second spring telescopic rod, and the end of the second spring telescopic rod away from the lower intercepting net (223) is connected to a truncated pedestal seat (219), and the end of the truncated pedestal seat (219) away from the second spring telescopic rod is connected to a membrane puncture needle (220). A traction rod (218) is connected between the annular sealing seat (211) and the upper passive plug body (224). The annular sealing seat (211) is connected to an upper annular shrink filter portion (210) on which a plurality of filter holes are evenly opened. The upper annular shrink filter portion (210) is in the shape of a corrugated telescopic tube, and the initial state of the upper annular shrink filter portion (210) is a contracted state. An L-shaped pin rod (217) is connected to the side wall of the traction rod (218).

7. The device for increasing the yield of old citrus orchards according to claim 6, characterized in that: An annular receiving chamber capable of accommodating an upper annular shrink filter portion (210) is provided at one end of the annular sealing seat (208) away from the inner annular filter plate (205), and an annular blocking seat (211) is sealingly and slidably connected in the annular receiving chamber, and one end of the upper annular shrink filter portion (210) away from the annular blocking seat (211) is connected to the bottom wall of the annular receiving chamber; A sealing liquid groove connected to the annular receiving chamber is provided on one end of the annular sealing seat (208) close to the inner annular filter plate (205), and one end of the guide channel is connected to the end of the embedding groove, and the other end is connected to the sealing liquid groove; The sealing membrane (221) is connected to the end opening of the sealing liquid groove; The lower intercepting net (223) is fixedly connected in the liquid sealing groove, the upper passive plug body (224) is sealingly and slidably connected in the liquid sealing groove, and the end of the traction rod (218) away from the upper passive plug body (224) extends from the liquid sealing groove into the annular receiving cavity and is connected to the annular blocking seat (211); The initial state of the first spring is a stretched state, and when the first spring is in the initial stretched state, the end of the limit clamping rod (216) away from the first spring slides into the interior of the sealing liquid groove, and the end of the L-shaped pin rod (217) away from the traction rod (218) is buckled in the buckle groove on the limit clamping rod (216).

8. The device for increasing the yield of old citrus orchards according to claim 7, characterized in that: The hydraulic sensing component comprises a pressure relief channel, a reciprocating piston (227), a pressure relief piston (226), a dynamic switch terminal (213) and a static switch terminal (222); one end of the reciprocating piston (227) is connected to a push rod (225), and a second spring is disposed on the outer sleeve of the push rod (225); The pressure relief piston (226) is connected to a third spring; A battery chamber is provided on one end of the reciprocating piston (227) away from the push rod (225), and a power supply battery (228) is installed in the battery chamber. An alarm light (229) and a transparent waterproof cover (230) are also connected to one end of the reciprocating piston (227) close to the power supply battery (228), and the transparent waterproof cover (230) is arranged on the periphery of the alarm light (229) and the power supply battery (228).

9. The device for increasing the yield of old citrus orchards according to claim 8, characterized in that: An airtight cavity is provided at a position corresponding to the side wall of the annular sealing seat (208) and the truncated cone seat (219), and a reciprocating piston (227) is sealingly and slidably connected in the airtight cavity; One end of the push rod (225) away from the reciprocating piston (227) seals through the end of the airtight cavity and extends into the sealing liquid groove, and when the second spring is in an initial relaxed state, the end of the push rod (225) abuts against the side wall of the truncated pedestal seat (219); One end of the second spring is connected to the end of the reciprocating piston (227), and the other end is connected to the end of the airtight chamber; The dynamic switch terminal (213) is connected to one end of the reciprocating piston (227) close to the push rod (225), and the static switch terminal (222) is connected to the end of the airtight cavity, and the dynamic switch terminal (213) and the static switch terminal (222) are arranged opposite to each other; A pressure relief chamber connected to the airtight cavity is provided inside the annular sealing seat (208); the pressure relief piston (226) is sealingly and slidably connected to the pressure relief chamber; and one end of the third spring away from the pressure relief piston (226) is connected to the end of the pressure relief chamber; One end of the pressure relief channel is connected to the end of the pressure relief chamber, and the other end passes through the side wall of the annular sealing seat (208); The positive electrode of the power supply battery (228) is connected to the input end of the alarm light (229) via a wire, the negative electrode of the power supply battery (228) is connected to the dynamic switch terminal (213) via a wire, and the output end of the alarm light (229) is connected to the static switch terminal (222) via a wire, and when the dynamic switch terminal (213) contacts the static switch terminal (222), the alarm light (229) is triggered to turn on.

10. A method for using the device for increasing the yield of old citrus orchards according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, drip irrigation water for drip irrigation of old citrus orchards flows from the delivery pipeline (100) into the outlet pipe of the drip irrigation unit; S2, the water passes through the through hole on the diversion sealing plate (203), and then passes through the double barrier filtration of the soft filter membrane assembly and the inner annular filter plate (205), and then flows out from the drip irrigation hole on the drip irrigation top cover (202), thereby achieving drip irrigation treatment for old citrus fruit trees; S3, when the soft filter membrane assembly in the drip irrigation unit is gradually blocked and affects the normal water discharge of the drip irrigation unit, the hydraulic pressure in the inner cavity of the drip irrigation housing (201) gradually increases; S4. When the hydraulic pressure in the inner cavity of the drip irrigation housing (201) is greater than a first preset critical upper limit, the folding compensation structure drives the annular sealing seat (208) to move, and during the movement of the annular sealing seat (208), the annular sealing seat (208) drives the folding compensation structure to gradually change from a contracted state to an expanded state, and the drip irrigation water is filtered by the expanded folding compensation structure and finally flows out from the drip irrigation hole, thereby realizing active water output compensation for the reduction in water output caused by filter blockage during the drip irrigation process.

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