Self-balancing intelligent irrigation control device suitable for cross-region multi-working-condition orchard

By using a water pressure-driven adaptive pressure-sensing sliding core and a modular functional replacement core, the problem of flow self-balancing and multi-condition adaptation in cross-regional orchard irrigation systems has been solved, achieving stable irrigation results under solar power conditions.

CN122191341APending Publication Date: 2026-06-12SICHUAN AGRI UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN AGRI UNIV
Filing Date
2026-04-30
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing irrigation connectors suffer from poor energy adaptability and lack of adaptability to multiple operating conditions when used in orchards across regions. In particular, under solar power conditions, water pressure fluctuates greatly, making it impossible to achieve flow self-balancing, which leads to equipment damage or uneven irrigation.

Method used

The system employs a water pressure-driven adaptive pressure-sensing sliding core and a modular functional replacement core to achieve flow self-balancing. By replacing the functional replacement core with different functions, it can adapt to the needs of different fruit trees, including preventing cherry cracking in Hanyuan, preventing flooding in Yucheng kiwifruit, and stabilizing the pressure in Xichang pomegranate orchards.

Benefits of technology

Achieving flow self-balancing without the need for electricity solves the problem of water pressure fluctuations, improves the applicability and effectiveness of the device, and ensures the uniformity of orchard irrigation and the stability of the equipment.

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Abstract

The application belongs to the technical field of orchard irrigation, and discloses a self-balancing intelligent irrigation control device suitable for cross-regional multi-working-condition orchards, which comprises a main pipe body, which is a hollow tubular structure, and the inner wall of the main pipe body is provided with symmetrical limiting sliding rails in the axial direction; a quick-lock butt joint seat is installed at the end of the main pipe body, and the quick-lock butt joint seat is internally provided with an L-shaped locking groove for quick mechanical locking with a function replacement core; and a self-adaptive pressure sensing sliding core is arranged in the main pipe body, and the outer peripheral diameter size of the self-adaptive pressure sensing sliding core is kept in a mutual cooperation relationship with the inner diameter size of the main pipe body. The self-adaptive pressure sensing sliding core is driven to displace by water pressure, so that flow self-balancing is realized without power, and the problem of unstable solar power supply is avoided; and different function replacement cores are replaced, so that the requirements of cherry anti-cracking, kiwi anti-flooding and pomegranate mountain pressure stabilization can be respectively solved, thereby effectively improving the product applicability and use effect.
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Description

Technical Field

[0001] This invention belongs to the field of orchard irrigation technology, specifically a self-balancing intelligent irrigation control device adapted to orchards in multiple regions and under multiple operating conditions. Background Technology

[0003] Typical agricultural irrigation connectors consist of a simple pipe body and quick-connect components, offering limited functionality. To address issues like silt blockage and inconvenient splicing, several connector structures with specific functions have emerged on the market. For example, utility model patent application CN223772699U discloses an anti-clogging connector that uses a spiked unblocking disc and a filter disc to solve the problem of silt clogging the filter holes; and invention patent application CN121251902A discloses a splicing water-saving hose that achieves sealing and quick splicing through the synergistic structure of an L-shaped connecting block and an arc-shaped groove. However, in practical applications across multiple regions (such as pomegranate, kiwi, and cherry orchards), the above structures have the following shortcomings: 1) Poor energy adaptability: In some ethnic minority areas, irrigation systems rely heavily on solar energy (such as 24V 200W specifications); however, due to the uncertainty of light intensity, the terminal water pressure fluctuates greatly; existing joints are mostly static flow channels, which cannot automatically adjust the flow rate according to real-time pressure, which can easily lead to equipment damage or uneven irrigation. 2) Lack of adaptability to various working conditions: Fruit trees in different regions are extremely sensitive to water and have very different working conditions; for example, Hanyuan cherries need precise watering before harvesting to prevent fruit cracking, Yucheng kiwifruit is susceptible to waterlogging and needs to be protected from flooding, while Xichang pomegranates are located in mountainous areas and need to cope with high pressure impacts.

[0004] However, existing technologies can often only solve single blockage or splicing problems, lacking a physical self-balancing regulation mechanism for cross-regional and multi-characteristic fruit trees; therefore, it is necessary to develop a self-balancing smart irrigation control device that can be adapted to cross-regional orchards with multiple operating conditions to solve the shortcomings of existing technologies. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a self-balancing smart irrigation control device that is adaptable to orchards in multiple regions and under multiple operating conditions, and has the advantage of good adaptability.

[0006] Among them, the adaptive pressure-sensing sliding core displacement driven by water pressure can achieve flow self-balancing without the need for electricity, effectively solving the problem of water pressure fluctuation caused by solar power supply; and by replacing the functional replacement core with different functions, one set of devices can simultaneously solve the differentiated needs of preventing cherry cracking in Hanyuan, preventing flooding in Yucheng kiwifruit, and stabilizing the pressure in Xichang pomegranate mountainous areas, thereby effectively improving the applicability and performance of the product.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a self-balancing intelligent irrigation control device adapted to orchards operating under multiple conditions across regions, comprising: The main body is a hollow tubular structure with symmetrical limiting slide rails opened along the axial direction on its inner wall; A quick-lock docking seat is installed at the end of the main body. The quick-lock docking seat has an L-shaped locking groove inside, which is used to quickly and mechanically lock with the functional replacement core. An adaptive pressure-sensing slide core is installed inside the main body, and its outer diameter is matched with the inner diameter of the main body. One end of the adaptive pressure-sensing slide core is connected to a return spring, and the other end of the adaptive pressure-sensing slide core is a pressure-bearing surface. The side wall of the adaptive pressure-sensing slide core is provided with stepped throttling holes, which are composed of a matrix of stepped throttling holes with multiple through holes of different diameters. The functional replacement core is a modular component, including a cherry damping core and a pomegranate current limiting core; the cherry damping core has a multi-stage labyrinthine physical flow channel in its inner cavity, and the pomegranate current limiting core has a fixed differential pressure plate inside.

[0008] Preferably, the main pipe is also provided with a convection connector for connecting to an external branch pipe.

[0009] Preferably, the convection connector includes a flow port integrally formed on the main body, the middle part of the flow port is hollow and communicates with the interior of the main body.

[0010] Preferably, a tightening thread is provided at both the upper and lower ends of the outer surface of the flow port, and the flow port is tightened to the external branch pipe through the tightening thread at the lower end.

[0011] Preferably, a positioning ring is integrally formed in the middle of the outer surface of the flow port, and the front end of the branch pipe connected to the flow port by the aforementioned screw thread abuts against the bottom surface of the positioning ring.

[0012] Preferably, a rotating sleeve is movably sleeved on the outside of the flow port. The inner diameter of the upper end of the inner cavity of the rotating sleeve is smaller than the inner diameter of the lower end of the inner cavity. The lower end of the inner cavity of the rotating sleeve is sleeved outside the positioning ring and a tightening thread below. The upper end of the inner cavity of the rotating sleeve is engaged with a tightening thread above.

[0013] Preferably, a connecting ring is also sleeved on the outside of the flow port. The connecting ring is fixedly connected to the bottom surface of the rotating sleeve. The bottom surface of the connecting ring is integrally formed with a plurality of evenly distributed first anti-reverse elastic pieces. The first anti-reverse elastic pieces move down with the connecting ring and the rotating sleeve and finally abut against the top end face of the external branch pipe.

[0014] Preferably, an adapter ring is also fitted around the outside of the flow port and fixedly connected to the upper end of the outer surface of the flow port, and a plurality of evenly distributed second reverse resisting springs are fixedly connected to the bottom of the adapter ring.

[0015] Preferably, the elastic preload of the second reversing spring is greater than that of the first reversing spring, and the rotation directions of the second reversing spring and the first reversing spring are opposite.

[0016] Preferably, a limiting sleeve is fitted around the outlet and the adapter ring. The limiting sleeve includes a protective sleeve covering the outside of the second anti-reverse spring. The upper end of the protective sleeve is integrally formed with a second sealing ring that is movably fitted around the outside of the adapter ring. The lower end of the protective sleeve is integrally formed with a first sealing ring that is slidably fitted around the outside of the outlet. The top and bottom of the outer surface of the first sealing ring are rough structures. The top of the first sealing ring abuts against the bottom of a plurality of second anti-reverse springs, and the bottom of the first sealing ring is tightly fitted against the top of the rotating sleeve.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes water pressure to drive the adaptive pressure-sensing sliding core displacement, achieving flow self-balancing without the need for electricity, effectively solving the water pressure fluctuation problem caused by solar power supply; and by replacing the functional replacement core with different functions, one device can simultaneously solve the differentiated needs of preventing cherry cracking in Hanyuan, preventing flooding in Yucheng kiwifruit, and stabilizing the pressure in mountainous areas of Xichang pomegranate, thereby effectively improving the applicability and performance of the product.

[0018] The present invention, due to the screw-tightening thread, facilitates the connection of the external branch pipe to the main pipe. The tightening position is determined under the constraint of the positioning ring. Then, rotating the rotating sleeve pushes the first anti-reverse elastic piece to press against the end face of the branch pipe through the connecting ring. At the same time, under the elastic restoring force of the second anti-reverse elastic piece, its lower end continuously presses the first sealing liner against the top of the rotating sleeve. Thus, with the cooperation of the second and first anti-reverse elastic pieces, the influence of vibration or frequent water pressure changes on the threaded connection is effectively avoided, thereby significantly improving the connection stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the main body of the present invention; Figure 3 This is a front view of the convection connector of the present invention; Figure 4 This is a schematic diagram of the convection connector of the present invention; Figure 5 This is a cross-sectional schematic diagram of the convection connector of the present invention; Figure 6This is a disassembly diagram of the convection connector of the present invention; Figure 7 This is a cross-sectional schematic diagram of the positive limiting sleeve of the convection connector of the present invention.

[0020] In the diagram: 1. Main body; 2. Quick-lock docking seat; 3. Adaptive pressure-sensing slide core; 4. Functional replacement core; 5. Return spring; 6. Limit slide rail; 7. Step throttling orifice; 8. Convection connector; 81. Flow port; 82. Tightening thread; 83. Locating ring; 84. Rotating sleeve; 85. First anti-reverse spring; 86. Limiting sleeve; 861. Protective sleeve; 862. First sealing ring; 863. Second sealing ring; 87. Second anti-reverse spring; 88. Adaptor ring; 89. Connecting ring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 7 As shown, the present invention provides a self-balancing smart irrigation control device adapted to orchards with multiple operating conditions across regions, comprising: The main body 1 is a hollow tubular structure, and its inner wall is provided with symmetrical limiting slide rails 6 along the axial direction; The quick-lock docking seat 2 is installed at the end of the main body 1. The quick-lock docking seat 2 has an L-shaped locking groove inside, which is used to quickly and mechanically lock with the functional replacement core 4. An adaptive pressure sensing slide core 3 is installed inside the main body 1, and its outer diameter is matched with the inner diameter of the main body 1. One end of the adaptive pressure sensing slide core 3 is connected to a return spring 5, and the other end of the adaptive pressure sensing slide core 3 is a pressure-bearing surface. A stepped throttling orifice 7 is opened on the side wall of the adaptive pressure sensing slide core 3. The stepped throttling orifice 7 is a matrix of stepped throttling orifices composed of multiple through holes of different diameters. Functional replacement core 4 is a modular component, including a cherry damping core and a pomegranate current limiting core; the cherry damping core has a multi-stage labyrinth-style physical flow channel in its inner cavity, and the pomegranate current limiting core has a fixed differential pressure plate inside; By utilizing water pressure to drive the displacement of the adaptive pressure-sensing sliding core 3, flow self-balancing can be achieved without the need for electricity, effectively solving the problem of water pressure fluctuation caused by solar power supply. Furthermore, by replacing the functional replacement core 4 with different functions, one device can simultaneously address the differentiated needs of preventing cherry cracking in Hanyuan, preventing flooding in Yucheng kiwifruit, and stabilizing the pressure in Xichang pomegranate mountainous areas, thereby effectively improving the applicability and performance of the product.

[0023] The main pipe 1 is also equipped with a convection connector 8 for connecting to an external branch pipe.

[0024] The convection connector 8 includes an outlet 81 integrally formed on the main pipe body 1. The outlet 81 has a hollow structure in the middle and is interconnected with the interior of the main pipe body 1.

[0025] The upper and lower ends of the outer surface of the flow port 81 are provided with a tightening thread 82, and the flow port 81 is tightened to the external branch pipe through the tightening thread 82 at the lower end.

[0026] Among them, a positioning ring 83 is integrally formed in the middle of the outer surface of the outlet 81. The front end of the branch pipe connected to the outlet 81 by the aforementioned tightening thread 82 is pressed against the bottom surface of the positioning ring 83. With the cooperation of the positioning ring 83, the tightening thread 82 makes it convenient for the staff to connect the external branch pipe to the main body 1.

[0027] Among them, the outer side of the flow port 81 is movably sleeved with a rotating sleeve 84. The inner diameter of the upper end of the inner cavity of the rotating sleeve 84 is smaller than the inner diameter of the lower end of the inner cavity. The lower end of the inner cavity of the rotating sleeve 84 is sleeved on the outside of the positioning ring 83 and a tightening thread 82 below. The upper end of the inner cavity of the rotating sleeve 84 is engaged with the tightening thread 82 above.

[0028] Among them, the outside of the flow port 81 is also fitted with a connecting ring 89, which is fixedly connected to the bottom surface of the rotating sleeve 84. The bottom surface of the connecting ring 89 is integrally formed with a plurality of evenly distributed first anti-reverse spring pieces 85. The first anti-reverse spring pieces 85 move down with the connecting ring 89 and the rotating sleeve 84 and finally abut against the top end face of the external branch pipe.

[0029] Among them, an adapter ring 88 is fixedly connected to the upper part of the outer surface of the flow port 81, and a number of evenly distributed second anti-reverse springs 87 are fixedly connected to the bottom of the adapter ring 88.

[0030] The elastic preload of the second reverse spring 87 is greater than that of the first reverse spring 85, and the rotation directions of the second reverse spring 87 and the first reverse spring 85 are opposite. Due to the cooperation between the second reverse spring 87 and the first reverse spring 85, when the operator rotates the rotating sleeve 84 and moves it under the action of the corresponding tightening thread 82, it is close to the end face of the branch pipe. The lower end of the second reverse spring 87 presses the first sealing ring 862 against the top of the rotating sleeve 84 to prevent the rotating sleeve 84 from rotating in the opposite direction. At the same time, it is easy to make the lower end of the first reverse spring 85 tilt on the end face of the branch pipe. Based on this, it is easy to effectively block the reverse rotation of the branch pipe relative to the convection connector 8, thereby ensuring the stability of the connection between the branch pipe and the convection connector 8.

[0031] Among them, the flow port 81 and the adapter ring 88 are fitted with a limiting sleeve 86. The limiting sleeve 86 includes a protective sleeve 861 covering the outside of the second anti-reverse spring 87. The upper end of the protective sleeve 861 is integrally formed with a second sealing ring 863 that is movably fitted to the outside of the adapter ring 88. The lower end of the protective sleeve 861 is integrally formed with a first sealing ring 862 that is slidably fitted to the outside of the flow port 81. The top and bottom of the outer surface of the first sealing ring 862 are rough structures. The top of the first sealing ring 862 abuts against the bottom of several second anti-reverse springs 87. The bottom of the first sealing ring 862 is tightly fitted to the top of the rotating sleeve 84. The screw thread 82 facilitates the connection between the external branch pipe and the main pipe 1. The screwing position is determined by the positioning ring 83. Then, rotating the rotating sleeve 84 pushes the first anti-reverse spring 85 to press against the end face of the branch pipe through the connecting ring 89. At the same time, under the elastic restoring force of the second anti-reverse spring 87, its lower end continuously presses the first sealing ring 862 against the top of the rotating sleeve 84. Thus, with the cooperation of the second anti-reverse spring 87 and the first anti-reverse spring 85, the influence of vibration or frequent changes in water pressure on the threaded connection is effectively avoided, thereby significantly improving the connection stability.

[0032] Working principle and usage process of this invention: This device achieves physical adaptive adjustment of irrigation conditions by driving the mechanical displacement of the adaptive pressure sensing slide core 3 through water pressure. Water pressure regulation principle: When the solar-powered irrigation system is started, water flows into the main pipe 1 and acts on the pressure-bearing surface of the adaptive pressure-sensing slide core 3. When the water pressure increases, the adaptive pressure-sensing slide core 3 overcomes the elastic force of the return spring 5 and generates axial displacement along the limiting slide rail 6. The stepped throttling holes on the side wall of the adaptive pressure-sensing slide core 3 change with the displacement and automatically adjust the overlapping area with the flow port 81 on the main pipe 1: switching to small holes when the pressure is high and switching to large holes when the pressure is low, thereby maintaining the output pressure balance under energy fluctuation conditions. Working condition adaptation principle: According to the needs of crops in different districts and counties, the corresponding functional replacement core 4 is screwed into the quick-lock docking seat 2. In the Hanyuan cherry orchard, the labyrinth flow channel of the "cherry damping core" transforms instantaneous high pressure into slow seepage to prevent fruit cracking; in the Xichang pomegranate orchard, the displacement limit position of the adaptive pressure sensing sliding core 3 achieves forced flow restriction to protect the safety of the mountain pipeline network. When it is necessary to connect the external branch pipe to the overflow port 81, First, tighten the front end of the external branch pipe onto the flow port 81 through the lower tightening thread 82, and make the front end of the branch pipe press against the bottom of the positioning ring 83. Then, rotate the rotating sleeve 84 so that, with the cooperation of the upper tightening thread 82, the connecting ring 89 of the rotating sleeve 84 and several first anti-reverse spring pieces 85 at its bottom move down synchronously. During this period, with the cooperation of the inclined first anti-reverse spring pieces 85, the rotating sleeve 84 gradually presses the first anti-reverse spring pieces 85 against the end face of the branch pipe through the connecting ring 89. Meanwhile, as the rotating sleeve 84 gradually moves away from the adapter ring 88, under the elastic restoring force of the second anti-reverse spring 87, its lower end is always pressed against the first sealing liner 862 on the top of the rotating sleeve 84, thereby ensuring that the second anti-reverse spring 87 presses the connecting ring 89 and the first anti-reverse spring 85 against the end face of the branch pipe through the limiting sleeve 86 and the rotating sleeve 84, effectively preventing the relative rotation between the branch pipe and the flow port 81; When it is necessary to remove the external branch pipe, the rotating sleeve 84 is difficult to rotate because the second reverse spring 87 and the first reverse spring 85 simultaneously restrict the rotating sleeve 84. At this time, the limiting sleeve 86 is lifted upward to disengage it from the rotating sleeve 84, and the second reverse spring 87 is compressed upward. At this time, the rotating sleeve 84 can be continuously rotated to overcome the elastic resistance of the first reverse spring 85. When the first reverse spring 85 disengages from the end face of the branch pipe, the branch pipe can be rotated to unscrew it from the surface of the flow port 81.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-balancing intelligent irrigation control device adapted to orchards across regions and under multiple operating conditions, characterized in that, include: The main body (1) is a hollow tubular structure, and its inner wall is provided with symmetrical limiting slide rails (6) along the axial direction. The quick-lock docking seat (2) is installed at the end of the main body (1). The quick-lock docking seat (2) is provided with an L-shaped locking groove inside, which is used to quickly and mechanically lock with the functional replacement core (4). An adaptive pressure sensing slide core (3) is set inside the main body (1), and its outer diameter is matched with the inner diameter of the main body (1); one end of the adaptive pressure sensing slide core (3) is connected to a return spring (5), and the other end of the adaptive pressure sensing slide core (3) is a pressure-bearing surface; a stepped throttling hole (7) is opened on the side wall of the adaptive pressure sensing slide core (3), and the stepped throttling hole (7) is a stepped throttling hole matrix composed of multiple through holes with different diameters; The functional replacement core (4) is a modular component, including a cherry damping core and a pomegranate current limiting core; The cherry damping core has a multi-stage labyrinthine physical flow channel in its inner cavity, while the pomegranate flow limiting core has a fixed differential pressure plate inside.

2. The self-balancing intelligent irrigation control device adapted to orchards under multiple operating conditions across regions, as described in claim 1, is characterized in that: The main body (1) is also provided with a convection connector (8) for connecting with an external branch pipe.

3. The self-balancing intelligent irrigation control device adapted to orchards under multiple operating conditions across regions, as described in claim 2, is characterized in that: The convection connector (8) includes an inlet (81) integrally formed on the main body (1). The inlet (81) has a hollow structure in the middle and is interconnected with the interior of the main body (1).

4. The self-balancing intelligent irrigation control device adapted to orchards under multiple operating conditions across regions, as described in claim 3, is characterized in that: Both the upper and lower ends of the outer surface of the flow port (81) are provided with a tightening thread (82), and the flow port (81) is tightened to the external branch pipe through the tightening thread (82) at the lower end.

5. The self-balancing intelligent irrigation control device adapted to orchards under multiple operating conditions across regions, as described in claim 4, is characterized in that: A positioning ring (83) is integrally formed in the middle of the outer surface of the outlet (81). The front end of the branch pipe connected to the outlet (81) by the above-mentioned tightening thread (82) abuts against the bottom surface of the positioning ring (83).

6. The self-balancing intelligent irrigation control device adapted to orchards under multiple operating conditions across regions, as described in claim 5, is characterized in that: The outer side of the flow port (81) is movably fitted with a rotating sleeve (84). The inner diameter of the upper end of the inner cavity of the rotating sleeve (84) is smaller than the inner diameter of the lower end of the inner cavity. The lower end of the inner cavity of the rotating sleeve (84) is fitted outside the positioning ring (83) and a tightening thread (82) below. The upper end of the inner cavity of the rotating sleeve (84) cooperates with the tightening thread (82) above.

7. The self-balancing intelligent irrigation control device adapted to orchards under multiple operating conditions across regions, as described in claim 6, is characterized in that: The outside of the flow port (81) is also fitted with a connecting ring (89), which is fixedly connected to the bottom surface of the rotating sleeve (84). The bottom surface of the connecting ring (89) is integrally formed with a plurality of evenly distributed first anti-reverse spring pieces (85). The first anti-reverse spring pieces (85) move down with the connecting ring (89) and the rotating sleeve (84) and finally abut against the top end face of the external branch pipe.

8. The self-balancing intelligent irrigation control device adapted to orchards under multiple operating conditions across regions, as described in claim 7, is characterized in that: An adapter ring (88) is also fitted on the outside of the flow port (81) and fixedly connected to the upper end of the outer surface of the flow port (81). A number of evenly distributed second reverse resisting springs (87) are fixedly connected to the bottom of the adapter ring (88).

9. A self-balancing intelligent irrigation control device adapted to orchards under multiple operating conditions across regions, as described in claim 8, is characterized in that: The elastic preload of the second reversing spring (87) is greater than that of the first reversing spring (85), and the rotation directions of the second reversing spring (87) and the first reversing spring (85) are opposite.

10. A self-balancing intelligent irrigation control device adapted to orchards under multiple operating conditions across regions, as described in claim 8, characterized in that: The flow port (81) and the adapter ring (88) are fitted with a limiting sleeve (86). The limiting sleeve (86) includes a protective sleeve (861) covering the outside of the second anti-reverse spring (87). The upper end of the protective sleeve (861) is integrally formed with a second sealing ring (863) that is movably fitted outside the adapter ring (88). The lower end of the protective sleeve (861) is integrally formed with a first sealing ring (862) that is slidably fitted outside the flow port (81). The top and bottom of the outer surface of the first sealing ring (862) are rough structures. The top of the first sealing ring (862) abuts against the bottom of several second anti-reverse springs (87). The bottom of the first sealing ring (862) is tightly fitted against the top of the rotating sleeve (84).