Valves and irrigation systems

Abstract

The application discloses a valve and an irrigation system, the valve comprises a valve body, a valve cavity and a pressure measuring cavity are formed in the valve body, the valve cavity is used for conveying flowing medium, the valve cavity and the pressure measuring cavity are communicated through a communication structure, so that the valve cavity and the pressure measuring cavity have the same pressure, the pressure measuring cavity is provided with a pressure sensor, the communication structure and the pressure sensor are arranged in a staggered mode, so that the medium flowing from the valve cavity into the pressure measuring cavity does not directly impact the pressure sensor. The pressure sensor of the application can obtain the pressure of the flowing liquid in the valve by measuring the pressure of the liquid in the pressure measuring cavity when the liquid in the pressure measuring cavity keeps a stable state, and the detection result is not inaccurate due to the impact of the flowing liquid in the valve cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to a valve and an irrigation system. Background Art

[0002] Valves are pipe accessories used to open and close pipelines, control flow direction, and regulate and control the parameters (temperature, pressure, and flow) of the conveying medium. Usually, in order to detect the pressure of the water flow in the valve, the valve is also equipped with a pressure sensor.

[0003] In the prior art, the pressure sensor of the valve is generally directly mounted on the side wall of the valve body, which is easily impacted by the water flow in the valve during use and cannot accurately detect the water flow pressure in the valve. Summary of the Invention

[0004] The object of the present invention is to provide a valve and an irrigation system, which can solve the problem in the prior art that the pressure sensor on the valve cannot accurately detect the water flow pressure in the valve due to being directly impacted by the water flow.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] On the one hand, a valve is provided, comprising a valve body, wherein a valve cavity and a pressure measuring cavity are formed in the valve body, the valve cavity being used to convey a flowing medium, the valve cavity being connected to the pressure measuring cavity via a connecting structure so that the pressure in the valve cavity is the same as that in the pressure measuring cavity, the pressure measuring cavity being provided with a pressure sensor, and the connecting structure and the pressure sensor being staggered so that the medium flowing from the valve cavity into the pressure measuring cavity will not directly impact the pressure sensor.

[0007] Preferably, the valve body includes a plurality of valve sections, adjacent valve sections are fixedly connected via a threaded structure, the valve cavity is formed inside the valve section, and the pressure measuring cavity is formed on the connecting surface of adjacent valve sections.

[0008] Preferably, a groove is provided on the connecting surface of at least one valve section of the two adjacent valve sections, and the groove and the connecting surface of the corresponding valve section together form the pressure measuring cavity, or the grooves on the two valve sections cooperate to form the pressure measuring cavity.

[0009] Preferably, the groove is an annular groove arranged around the circumference of the valve section, and sealing rings are provided on both sides of the groove.

[0010] Preferably, the connecting structure is a connecting hole connecting the valve cavity and the pressure measuring cavity, and a sensor mounting hole for mounting the pressure sensor is further provided on the side wall of the pressure measuring cavity, and the connecting hole and the sensor mounting hole are staggered.

[0011] Preferably, one end of the pressure sensor is connected to the control module, and the other end is installed in the sensor installation hole.

[0012] Preferably, the valve body includes a first valve section, a second valve section and a third valve section, a first valve cavity is formed inside the first valve section, the second valve section and the third valve section are respectively connected to the first valve section, and together with the first valve section form a second valve cavity and a third valve cavity; the second valve cavity and the third valve cavity are both provided with corresponding pressure measuring cavities, and both pressure measuring cavities are provided with pressure sensors.

[0013] Preferably, the valve body includes a first valve section, a second valve section and a third valve section, a first valve cavity is formed inside the first valve section, the second valve section and the third valve section are respectively connected to the first valve section, and together with the first valve section form a second valve cavity and a third valve cavity; the pressure measuring cavity is arranged corresponding to the second valve cavity or the third valve cavity, and the pressure measuring cavity is provided with a pressure sensor.

[0014] Preferably, a valve core is provided in the first valve cavity, and the second valve cavity and the third valve cavity are respectively provided on both sides of the first valve cavity, and the second valve cavity and / or the third valve cavity can be selectively controlled to be connected to the first valve cavity through the valve core.

[0015] Preferably, both ends of the first valve section are provided with internal threads, and the ends of the second valve section and the third valve section are provided with external threads, and the second valve section and the third valve section are respectively installed on the inner side of the first valve section through threaded structures.

[0016] Preferably, it further includes a driving device arranged on one side of the valve body, wherein the driving device is in transmission connection with the valve core and is used to drive the valve core to move in the first valve cavity.

[0017] Preferably, the driving device includes a mounting shell, and the control module is arranged in the mounting shell.

[0018] Preferably, a power device, a transmission assembly and a matching piece are further provided in the installation housing, the matching piece is transmission-connected to the valve core, the transmission assembly is transmission-connected to the matching piece, and the power device is transmission-connected to the transmission assembly.

[0019] Preferably, the transmission assembly includes a first gear and a second gear meshing with each other, and a worm wheel and a worm meshing with each other, the first gear is transmission-connected to the output shaft of the power device, and the second gear is fixedly connected to the worm.

[0020] Preferably, the transmission assembly further comprises a retaining frame, and the power device, worm wheel and worm are arranged in the mounting housing via the retaining frame.

[0021] Preferably, a valve cover is further included, which is connected to the valve body and is used to confine the valve core in the valve body.

[0022] Preferably, it further comprises a communication module, which is arranged on the control module and is used to communicate with the control terminal and the control module.

[0023] In another aspect, the present invention further provides an irrigation system, comprising the valve as described above.

[0024] Preferably, a control terminal is further included, and the control terminal is used to control the working state of the valve.

[0025] Compared with the existing technology, the beneficial effects of this solution are:

[0026] In this solution, a connecting structure is set on the valve body to connect the valve cavity with the pressure measuring cavity, and the pressure sensor on the pressure measuring cavity is staggered with the connecting structure. When in use, part of the liquid in the valve will enter the pressure measuring cavity and remain stationary after filling the entire pressure measuring cavity. The pressure sensor can obtain the pressure of the flowing liquid in the valve by measuring the pressure of the liquid in the pressure measuring cavity. Since the pressure sensor of this solution detects the liquid when the liquid in the pressure measuring cavity is kept in a stable state, it will not be affected by the impact of the flowing liquid in the valve cavity during detection, resulting in inaccurate detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0028] Figure 1 This is a schematic diagram of the overall structure of the valve according to an embodiment of the present invention;

[0029] Figure 2 This is a cross-sectional view of the overall structure of the valve according to an embodiment of the present invention;

[0030] Figure 3 This is an exploded view of the overall structure of the valve according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the overall structure of the valve body of the valve according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the overall structure of the valve core of the valve according to an embodiment of the present invention;

[0033] Figure 6 This is an exploded view of the overall structure of the valve drive device according to an embodiment of the present invention;

[0034] Figure 7 Schematic diagram of the overall structure of the matching parts of the valve according to an embodiment of the present invention.

[0035] In the picture:

[0036] 10. Valve body; 11. First valve section; 110. First valve cavity; 1101. Valve core matching groove; 111. Sensor mounting hole; 112. Insertion hole; 12. Second valve section; 120. Second valve cavity; 121. Second communicating hole; 122. Second annular groove; 123. Second pressure sensor; 13. Third valve section; 130. Third valve cavity; 131. Third communicating hole; 132. Third annular groove; 133. Third pressure sensor; 20. Valve core; 201. First valve hole; 202. Second valve hole; 203. Third valve hole; 204. Matching groove; 21. Protrusion; 30. Valve cover; 301, connecting hole; 31, first connecting section; 32, second connecting section; 40, driving device; 41, mounting shell; 410, mounting cavity; 411, upper shell; 412, lower shell; 4120, first through-hole; 4121, second through-hole; 42, power device; 43, transmission assembly; 431, first gear; 432, second gear; 433, worm gear; 434, worm; 435, retaining frame; 4351, upper frame; 4352, lower frame; 44, mating part; 441, first mating portion; 442, second mating portion; 443, connecting portion; 45, control module. DETAILED DESCRIPTION

[0037] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, embodiments of the technical solutions of the present invention are described in further detail below. It is apparent that the described embodiments are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by those skilled in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention.

[0038] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] like Figure 1-Figure 7 As shown, an embodiment of the present invention provides a valve that can be used to open and close pipelines and control flow direction in agricultural irrigation systems. Of course, the valve can also be used in other pipeline systems to adjust and control parameters such as pressure and flow of the conveying medium.

[0041] Specifically, the valve includes a valve body 10, in which a valve cavity and a pressure measuring cavity are formed. The valve cavity is used to convey a flowing medium. The valve cavity and the pressure measuring cavity are connected through a connecting structure so that the pressure in the valve cavity and the pressure measuring cavity are the same. The pressure measuring cavity is provided with a pressure sensor. The connecting structure and the pressure sensor are staggered so that the medium flowing from the valve cavity into the pressure measuring cavity will not directly impact the pressure sensor.

[0042] In this embodiment, a connecting structure is provided on the valve body to connect the valve cavity with the pressure measuring cavity, and the pressure sensor on the pressure measuring cavity is staggered with the connecting structure. When in use, part of the liquid in the valve will enter the pressure measuring cavity and maintain a stable state after filling the entire pressure measuring cavity. The pressure sensor can obtain the pressure of the flowing liquid in the valve by measuring the pressure of the liquid in the pressure measuring cavity. Since the pressure sensor of this embodiment detects the liquid when the liquid in the pressure measuring cavity is kept in a stable state, it will not be affected by the impact of the flowing liquid in the valve cavity during detection, resulting in inaccurate detection results.

[0043] Specifically, the staggered arrangement described in this solution means that the opening of the communication structure is not directly opposite to the installation position of the pressure sensor, that is, the installation position of the pressure sensor is not located on an axis perpendicular to the plane where the opening of the communication structure is located.

[0044] In one embodiment of the present invention, valve body 10 includes a plurality of valve segments, each of which is fixedly connected by a threaded structure. A valve cavity is formed within each of the valve segments, and a pressure measuring cavity is formed on the connecting surfaces of adjacent valve segments. Each of the valve segments is suitable for connecting to pipelines in an irrigation system or other system.

[0045] It is understandable that the specific number of valve sections can be reasonably set according to actual needs, and can be one, two, three or even more.

[0046] Optionally, a groove is provided on the connecting surface of at least one of the two adjacent valve segments. The groove and the connecting surface of the corresponding valve segment together form a pressure measuring chamber, or the grooves on the two valve segments cooperate to form the pressure measuring chamber. The groove is an annular groove provided around the circumference of the valve segment, with sealing rings provided on both sides of the groove. It is understood that the groove can be a full-circumferential groove or a partial-circumferential groove.

[0047] In another embodiment of the present invention, the connecting structure is a connecting hole connecting the valve cavity and the pressure measuring cavity. A sensor mounting hole 111 for mounting a pressure sensor is further provided on the side wall of the pressure measuring cavity. The connecting hole and the sensor mounting hole 111 are staggered.

[0048] The pressure measuring chamber of this embodiment is a closed structure, and is only provided with a sensor mounting hole 111 and a connecting hole. The sensor mounting hole 111 is used to install the pressure sensor, and the connecting hole is used to connect it with the valve chamber. Therefore, when measuring pressure in a stable state, the liquid in the pressure measuring chamber remains stationary, and the pressure sensor will not be impacted by the flowing liquid in the valve chamber, resulting in inaccurate detection.

[0049] Optionally, a control module 45 is further included, one end of the pressure sensor is connected to the control module 45, and the other end is installed in the sensor installation hole 111. The pressure sensor of this embodiment can transmit the measured pressure value to the control module 45.

[0050] It is understandable that the pressure sensor of this embodiment can be installed in the sensor mounting hole 111 by common installation methods such as threaded connection.

[0051] refer to Figure 3 In one embodiment of the present invention, the valve body 10 includes a first valve section 11, a second valve section 12 and a third valve section 13. A first valve cavity 110 is formed inside the first valve section 11. The second valve section 12 and the third valve section 13 are respectively connected to the first valve section 11, and together with the first valve section 11, they form a second valve cavity 120 and a third valve cavity 130. The ends of the second valve section 12 and the third valve section 13 away from the first valve section 11 can be connected to pipes in an irrigation system or other piping system through connectors.

[0052] The second valve chamber 120 and the third valve chamber 130 are each provided with a corresponding pressure measuring chamber, and both pressure measuring chambers are equipped with pressure sensors, thereby enabling accurate measurement of the liquid pressures in the second valve chamber 120 and the third valve chamber 130. That is, a second pressure measuring chamber is provided corresponding to the second valve chamber 120, and a second pressure sensor 123 is provided in the second pressure measuring chamber. A third pressure measuring chamber is provided corresponding to the third valve chamber 130, and a third pressure sensor 133 is provided in the third pressure measuring chamber.

[0053] Specifically, a second connecting hole 121 and a third connecting hole 131 are respectively provided on the second valve section 12 and the third valve section 13, and a second annular groove 122 and a third annular groove 132 are respectively formed on the peripheral walls of the second valve section 12 and the third valve section 13. The second annular groove 122 and the third annular groove 132 are respectively connected to the second connecting hole 121 and the third connecting hole 131.

[0054] The second annular groove 122 and the third annular groove 132 also have sealing ring grooves on both sides, and sealing rings are installed in the sealing ring grooves. When the second valve section 12 and the third valve section 13 are connected to the first valve section 11, the second annular groove 122 and the third annular groove 132 respectively cooperate with the inner wall of the first valve cavity 110 to form a closed second pressure measuring cavity and a third pressure measuring cavity.

[0055] Two sensor mounting holes 111 are provided on the first valve section 11 corresponding to the second annular groove 122 and the third annular groove 132. The second pressure sensor 123 and the third pressure sensor 133 are respectively installed in the two sensor mounting holes 111. The two sensor mounting holes 111 are respectively staggered with the second connecting hole 121 and the third connecting hole 131.

[0056] It should be pointed out that the above-mentioned manner of providing a pressure measuring chamber and a pressure sensor in both the second valve chamber 120 and the third valve chamber 130 is not a limitation to the present application. In other embodiments, a solution of providing a pressure measuring chamber and a pressure sensor only on one of the second valve chamber 120 or the third valve chamber 130 can also be adopted.

[0057] Specifically, refer to Figure 2 A valve core 20 is provided in the first valve chamber 110, and the second valve chamber 120 and the third valve chamber 130 are respectively provided on both sides of the first valve chamber 110. The valve core 20 can selectively control the second valve chamber 120 and / or the third valve chamber 130 to be connected to the first valve chamber 110.

[0058] Specifically, refer to Figure 5 The valve core 20 is generally spherical and defines a first valve hole 201, a second valve hole 202, and a third valve hole 203 that are interconnected. The valve core 20 is disposed within the first valve chamber 110. In this embodiment, the valve core 20 can be rotated to simultaneously connect the second valve chamber 120 and the third valve chamber 130 to the first valve chamber 110 through the first valve hole 201, the second valve hole 202, and the third valve hole 203 thereon. It will be appreciated that the valve hole arrangement structure in the above embodiment enables the second valve chamber 120 and the third valve chamber 130 to communicate with the first valve chamber 110 simultaneously. In other embodiments, different valve hole arrangement positions can be adopted, or the number of valve holes can be adjusted to enable the second valve chamber 120 and the third valve chamber 130 to communicate with the first valve chamber 110 separately.

[0059] Optionally, refer to Figure 3 The first valve section 11 is provided with internal threads at both ends, and the second valve section 12 and the third valve section 13 are provided with external threads at their ends. The second valve section 12 and the third valve section 13 are respectively installed on the inner side of the first valve section 11 through the threaded structure. Of course, in other embodiments, the second valve section 12 and the third valve section 13 can also be connected to the first valve section 11 through other methods.

[0060] Furthermore, the valve body 10 further includes a driving device 40 disposed on one side thereof. The driving device 40 is in transmission connection with the valve core 20 and is configured to drive the valve core 20 to move within the first valve chamber 110, thereby achieving communication between the second valve chamber 120 and the third valve chamber 130 and the first valve chamber 110, respectively, or simultaneously. The movement of the valve core 20 within the first valve chamber 110 may be rotation, translation, or swinging. In this embodiment, the rotation of the valve core 29 within the first valve chamber 110 driven by the driving device 40 is used as an example.

[0061] The driving device 40 includes a mounting housing 41 , and a control module 45 is disposed in the mounting housing 41 .

[0062] Specifically, such as Figure 6 As shown, the mounting housing 41 includes an upper housing 411 and a lower housing 412 connected vertically. The lower housing 412 is connected to the valve body 10. The upper housing 411 and the lower housing 412 jointly enclose a mounting cavity 410. The lower housing 412 also defines two first through-holes 4120 corresponding to the sensor mounting holes 111. The first through-holes 4120 allow one end of the second pressure sensor 123 and the third pressure sensor 133 to pass through the mounting housing 41 for connection to the control module 45.

[0063] Furthermore, a power device 42 , a transmission assembly 43 and a matching piece 44 are also provided in the mounting housing 41 . The matching piece 44 is transmission-connected to the valve core 20 , the transmission assembly 43 is transmission-connected to the matching piece 44 , and the power device 42 is transmission-connected to the transmission assembly 43 .

[0064] Specifically, such as Figure 6 As shown, the transmission assembly 43 includes a first gear 431 and a second gear 432 that are meshed with each other, and a worm wheel 433 and a worm 434 that are meshed with each other. The first gear 431 is in transmission connection with the output shaft of the power device 42, and the second gear 432 is fixedly connected to the worm 434.

[0065] When the transmission assembly 43 is working, the power device 42 drives the first gear 431 to rotate, the first gear 431 drives the second gear 432 and the worm 434 to rotate, the worm 434 drives the worm wheel 433 to rotate, the worm wheel 433 drives the matching piece 44 to rotate, and the matching piece 44 drives the valve core 20 to rotate, thereby controlling the second valve chamber 120 and the third valve chamber 130 to be respectively connected to the first valve chamber 110 or the second valve chamber 120 and the third valve chamber 130 to be simultaneously connected to the first valve chamber 110.

[0066] Optionally, the power device 42 is a drive motor. Of course, in other embodiments, the power device 42 can also be other devices.

[0067] Further, such as Figure 7 As shown, the fitting member 44 includes a first fitting portion 441 , a second fitting portion 442 and a connecting portion 443 connected between the first fitting portion 441 and the second fitting portion 442 .

[0068] The first valve section 11 and the lower shell 412 respectively have an inserting hole 112 and a second through-hole 4121 . The inserting hole 112 and the second through-hole 4121 are coaxially arranged. The fitting 44 is inserted into the first valve cavity 110 through the inserting hole 112 and the second through-hole 4121 .

[0069] like Figure 2 and Figure 5 As shown, the valve core 20 is provided with a protrusion 21, and a valve core mating groove 1101 is formed on the periphery of the insertion hole 112 to mate with the protrusion 21. The protrusion 21 is provided with a mating groove 204. The first mating portion 441 is adapted to mate with the mating groove 204 on the valve core 20, the second mating portion 442 is provided through the shaft hole of the worm gear 433, and the connecting portion 443 is adapted to pass through the insertion hole 112 and the second through-hole 4121.

[0070] Optionally, the transmission assembly 43 further includes a retaining frame 435 , and the power device 42 , the worm wheel 433 and the worm 434 are arranged in the installation cavity 410 of the installation housing 41 through the retaining frame 435 .

[0071] Specifically, the retaining frame 435 includes an upper frame 4351 and a lower frame 4352 connected together, and the power device 42 , the worm gear 433 and the worm 434 are installed between the upper frame 4351 and the lower frame 4352 .

[0072] Furthermore, a valve cover 30 is included, which is connected to the valve body 10 and is used to restrict the valve core 20 in the valve body 10.

[0073] Specifically, refer to Figure 2 and Figure 3A connecting hole 301 is formed in the valve cover 30. The first valve section 11 can be connected to the pipeline of the irrigation system or other systems through the valve cover 30, and the first valve cavity 110 is communicated with the pipeline of the irrigation system or other systems through the connecting hole 301.

[0074] The valve cover 30 includes a first connecting section 31 and a second connecting section 32. The first connecting section 31 is connected to the first valve section 11, and the second connecting section 32 is suitable for connecting to a pipeline of an irrigation system or other systems.

[0075] That is, in this embodiment, the pipeline connected to the connection hole 301 serves as the input end of the irrigation system. The liquid enters the first valve chamber 110 through the connection hole 301, and then enters the second valve chamber 120 and the third valve chamber 130 from both sides, and is transported to various positions of the irrigation system for irrigation operations.

[0076] An external thread is formed on the first connecting section 31 , an internal thread is formed in the first valve cavity 110 of the first valve section 11 , and the valve cover 30 is threadedly connected to the first valve section 11 .

[0077] Furthermore, the valve described in this embodiment also includes a communication module, which is provided on the control module 45 and is used to communicate with the control terminal and the control module 45 .

[0078] By providing a communication module on the control module 45 , in this embodiment, the valve can be remotely controlled via the control terminal or the control module 45 .

[0079] An embodiment of the present invention further provides an irrigation system having the valve described in any of the above embodiments.

[0080] Furthermore, the irrigation system further includes a control terminal for controlling the working state of the valve. By providing the control terminal, the present embodiment can remotely control the valve, making the irrigation system provided by the present embodiment more intelligent.

[0081] It is understandable that the control terminal can be but is not limited to a mobile phone, tablet computer, computer and other terminals.

[0082] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other positions or relationships are used solely for ease of description and simplified operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0083] In this specification, reference to terms such as "one embodiment" or "example" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0084] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0085] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific embodiments of the present invention without inventive effort, and these embodiments will also fall within the scope of protection of the present invention.

Claims

1. A valve, characterized in that: The invention comprises a valve body (10), wherein a valve cavity and a pressure measuring cavity are formed in the valve body (10), wherein the valve cavity is used to convey a flowing medium, the valve cavity and the pressure measuring cavity are connected via a connecting structure so that the pressure of the valve cavity and the pressure measuring cavity are the same, the pressure measuring cavity is provided with a pressure sensor, and the connecting structure and the pressure sensor are arranged in a staggered manner so that the medium flowing from the valve cavity into the pressure measuring cavity does not directly impact the pressure sensor; The valve body (10) comprises a plurality of valve sections, adjacent valve sections are fixedly connected via a threaded structure, the valve cavity is formed inside the valve section, and the pressure measuring cavity is formed on the connecting surface of the adjacent valve sections; A groove is provided on the connecting surface of at least one of the two adjacent valve sections, and the groove and the connecting surface of the corresponding valve section together form the pressure measuring cavity, or the grooves on the two valve sections cooperate to form the pressure measuring cavity; The groove is an annular groove arranged around the circumference of the valve section, and sealing rings are arranged on both sides of the groove; The communication structure is a communication hole connecting the valve cavity and the pressure measuring cavity, and a sensor mounting hole (111) for mounting the pressure sensor is further provided on the side wall of the pressure measuring cavity, and the communication hole and the sensor mounting hole (111) are staggered. Also includes: a valve cover (30), the valve cover (30) being connected to the valve body (10) and being used to confine the valve core (20) within the valve body (10); A communication module is provided on the control module (45) and is used for communication connection between the control terminal and the control module (45).

2. The valve according to claim 1, characterized in that It also includes a control module (45), one end of the pressure sensor is connected to the control module (45), and the other end is installed in the sensor installation hole (111).

3. The valve according to claim 2, characterized in that The valve body (10) includes a first valve section (11), a second valve section (12) and a third valve section (13); a first valve cavity (110) is formed inside the first valve section (11); the second valve section (12) and the third valve section (13) are respectively connected to the first valve section (11), and together with the first valve section (11) form a second valve cavity (120) and a third valve cavity (130); the second valve cavity (120) and the third valve cavity (130) are both provided with corresponding pressure measuring cavities, and both pressure measuring cavities are provided with pressure sensors.

4. The valve according to claim 2, characterized in that The valve body (10) includes a first valve section (11), a second valve section (12) and a third valve section (13); a first valve cavity (110) is formed inside the first valve section (11); the second valve section (12) and the third valve section (13) are respectively connected to the first valve section (11), and together with the first valve section (11) form a second valve cavity (120) and a third valve cavity (130); the pressure measuring cavity is arranged corresponding to the second valve cavity (120) or the third valve cavity (130), and the pressure measuring cavity is provided with a pressure sensor.

5. The valve according to claim 3, characterized in that A valve core (20) is provided in the first valve chamber (110), and the second valve chamber (120) and the third valve chamber (130) are respectively provided on both sides of the first valve chamber (110). The second valve chamber (120) and / or the third valve chamber (130) can be selectively controlled to communicate with the first valve chamber (110) through the valve core (20).

6. The valve according to claim 5, characterized in that Both ends of the first valve section (11) are respectively provided with internal threads, and the ends of the second valve section (12) and the third valve section (13) are respectively provided with external threads, and the second valve section (12) and the third valve section (13) are respectively installed on the inner side of the first valve section (11) through threaded structures.

7. The valve according to claim 6, characterized in that It also includes a driving device (40) arranged on one side of the valve body (10), wherein the driving device (40) is in transmission connection with the valve core (20) and is used to drive the valve core (20) to move in the first valve cavity (110).

8. The valve according to claim 7, characterized in that The driving device (40) comprises a mounting housing (41), and the control module (45) is arranged in the mounting housing (41).

9. The valve according to claim 8, characterized in that The mounting housing (41) is further provided with a power device (42), a transmission assembly (43) and a matching piece (44); the matching piece (44) is transmission-connected to the valve core (20); the transmission assembly (43) is transmission-connected to the matching piece (44); and the power device (42) is transmission-connected to the transmission assembly (43).

10. The valve according to claim 9, characterized in that The transmission assembly (43) includes a first gear (431) and a second gear (432) that mesh with each other, and a worm wheel (433) and a worm (434) that mesh with each other. The first gear (431) is in transmission connection with the output shaft of the power device (42), and the second gear (432) is fixedly connected to the worm (434).

11. The valve according to claim 10, characterized in that The transmission assembly (43) further includes a retaining frame (435), and the power device (42), the worm wheel (433) and the worm (434) are arranged in the mounting housing (41) via the retaining frame (435).

12. An irrigation system, characterized in that: A valve according to any one of claims 1 to 11.

13. The irrigation system according to claim 12, wherein: It also includes a control terminal, which is used to control the working state of the valve.

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