CN218480221U - Valve and irrigation system - Google Patents

Abstract

The utility model discloses a valve and irrigation system, the valve includes the valve body, be formed with valve pocket and pressure-measuring chamber in the valve body, the valve pocket is used for carrying the mobile medium, the valve pocket with the pressure-measuring chamber is linked together through the connectivity, so that the valve pocket with pressure-measuring chamber pressure is the same, the pressure-measuring chamber is provided with pressure sensor, pressure sensor has the orientation the first pressure detection end in pressure-measuring chamber and keep away from the second pressure detection end in pressure-measuring chamber, second pressure detection end outside cover is equipped with the enclosing cover, seted up on the enclosing cover and made the through-hole of second pressure detection end and atmospheric pressure intercommunication. The utility model discloses an establish the enclosing cover in pressure sensor outside lid, the enclosing cover can keep the pressure in the pressure sensor outside unchangeable when the valve is by the submergence, this makes the utility model discloses can still can accurately measure the pressure of flowing medium in the valve when the valve is by the submergence.

Description

Valve and irrigation system

Technical Field

The utility model relates to a valve technical field especially relates to a valve and irrigation system.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). In general, a pressure sensor is provided in the valve to detect the pressure of the water flow in the valve.

In the prior art, a pressure sensor on a valve mainly measures the pressure difference between the inside of the valve and the atmospheric pressure outside the valve to measure the water pressure in the valve. However, in the actual use process of the valve, the pressure outside the valve may be changed from the atmospheric pressure to the pressure of the fluid outside the valve due to the valve being immersed, and the pressure change outside the valve may cause the detection of the pressure sensor to be deviated, so that the pressure sensor may not accurately measure the water flow pressure inside the valve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a valve and irrigation system, it can solve among the prior art problem of the unable accurate water pressure in measuring valve of pressure sensor on the valve because external pressure's change.

In order to achieve the purpose, the utility model adopts the following technical proposal:

on the one hand, 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 media, the valve cavity is communicated with the pressure measuring cavity through a communicating structure, so that the valve cavity is the same as the pressure of the pressure measuring cavity, the pressure measuring cavity is provided with a pressure sensor, the pressure sensor is provided with a first pressure detection end facing the pressure measuring cavity and a second pressure detection end far away from the pressure measuring cavity, an outer cover is sleeved on the outer side of the second pressure detection end, and a through hole enabling the second pressure detection end to be communicated with the atmospheric pressure is formed in the outer cover.

Preferably, the outer cover is fixedly connected with the valve body, and the through hole is formed in the end part of the outer cover connected with the valve body.

Preferably, the outer cover is provided with a notch facing the end of the valve body, and the notch and the valve body jointly form the through hole.

Preferably, the pressure sensor is in communication connection with the control module through a cable, one end of the cable is connected with the control module, and the other end of the cable penetrates through the through hole to be connected with the pressure sensor.

Preferably, the outer cover is fixedly connected with the valve body through a thread structure, or fixedly connected through a buckle structure.

Preferably, the communicating structure and the pressure sensor are arranged in a staggered mode, so that the medium flowing into the pressure measuring cavity from the valve cavity cannot directly impact the pressure sensor.

Preferably, the valve body comprises a plurality of valve sections, the adjacent valve sections are fixedly connected through a thread structure, the valve cavity is formed inside the valve sections, and the pressure measuring cavity is formed on the connecting surface of the adjacent valve sections.

Preferably, a groove is arranged 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 together cooperate to form the pressure measuring cavity; the groove is an annular groove arranged around the periphery of the valve section, and sealing rings are arranged on two sides of the groove.

Preferably, the communicating structure is a communicating hole for communicating the valve cavity with the pressure measuring cavity, a sensor mounting hole for mounting the pressure sensor is further formed in the side wall of the pressure measuring cavity, and the communicating hole and the sensor mounting hole are arranged in a staggered mode.

In another aspect, the present embodiment also provides an irrigation system comprising a valve as described above.

Preferably, the control system further comprises a control terminal, and the control terminal is used for controlling the working state of the valve.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses an establish the enclosing cover and set up the through-hole with external intercommunication on the enclosing cover at pressure sensor's second pressure detection end outside cover, when the valve by the external fluid submergence in the in-service use process, the external fluid can get into in the enclosing cover through the through-hole and seal the partial air in the enclosing cover, and the air that is sealed in the enclosing cover can make the pressure on the inside top of enclosing cover still keep for atmospheric pressure. Therefore, the utility model discloses when the valve is by the submergence, the pressure in pressure sensor's the second pressure measurement end outside can not appear changing by the submergence because of the valve, and this can guarantee that pressure sensor's testing result can not appear the deviation when the valve is by the submergence, realizes that pressure sensor is to the accurate detection of flowing medium pressure in the valve.

Drawings

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

Fig. 1 is a schematic view of an overall structure of a valve according to an embodiment of the present invention;

fig. 2 is a sectional view of the overall structure of the valve according to the embodiment of the present invention;

fig. 3 is an exploded view of the overall structure of the valve according to the embodiment of the present invention;

fig. 4 is a schematic view of the overall structure of the valve body of the valve according to the embodiment of the present invention;

fig. 5 is a schematic view of the overall structure of a valve element of the valve according to the embodiment of the present invention;

fig. 6 is a schematic view of the overall structure of a fitting member of the valve according to the embodiment of the present invention;

fig. 7 is an exploded view of the overall structure of the driving device of the valve according to the embodiment of the present invention;

fig. 8 is a schematic view of the overall structure of the outer cover of the valve according to the embodiment of the present invention.

In the figure:

10. a valve body; 11. a first valve section; 110. a first valve chamber; 1101. the valve core is matched with the groove; 111. a sensor mounting hole; 112. inserting holes; 12. a second valve section; 120. a second valve cavity; 121. a second communication hole; 122. a second annular groove; 123. a second pressure sensor; 13. a third valve section; 130. a third valve cavity; 131. a third communication hole; 132. a third annular groove; 133. a third pressure sensor; 14. an outer cover; 141. a notch; 20. a valve core; 201. a first valve bore; 202. a second valve hole; 203. a third valve bore; 204. a mating groove; 21. a boss portion; 30. a valve cover; 301. connecting holes; 31. a first connection section; 32. a second connection section; 40. a drive device; 41. installing a shell; 410. a mounting cavity; 411. an upper housing; 412. a lower housing; 4121. a second perforation; 42. a power plant; 43. a transmission assembly; 431. a first gear; 432. a second gear; 433. a worm gear; 434. a worm; 435. a holder; 4351. putting on a shelf; 4352. putting down a rack; 44. a mating member; 441. a first mating portion; 442. a second fitting portion; 443. a connecting portion; 45. and a control module.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the embodiments of the present invention are further described in detail below, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-8, the embodiment of the present invention provides a valve, which can be used for opening and closing a pipeline and controlling the flow direction in an agricultural irrigation system. Of course, the valve can also be used for adjusting and controlling parameters such as pressure and flow of the conveying medium in other pipeline systems.

Specifically, the valve includes valve body 10, be formed with valve chamber and pressure measurement chamber in the valve body 10, the valve chamber is used for carrying the flowing medium, the valve chamber is linked together through the connectivity with the pressure measurement chamber, so that the valve chamber is the same with pressure measurement chamber pressure, the pressure measurement chamber is provided with pressure sensor, pressure sensor has the first pressure measurement end towards the pressure measurement chamber and keeps away from the second pressure measurement end of pressure measurement chamber, second pressure measurement end outside cover is equipped with enclosing cover 14, set up the through-hole that makes second pressure measurement end and atmospheric pressure communicate on enclosing cover 14, pressure sensor reachs the pressure of flowing medium in the valve through the pressure differential that first pressure measurement end and second pressure measurement end measured.

This embodiment sets up enclosing cover 14 and sets up the through-hole with external intercommunication on enclosing cover 14 through the second pressure detection end outside cover at pressure sensor, and when the valve was by the external fluid submergence in the in-service use process, external fluid can get into in enclosing cover 14 and seal the partial air in enclosing cover 14 through the through-hole, and the air of being sealed in enclosing cover 14 can make the pressure on the inside top of enclosing cover 14 still keep atmospheric pressure. Therefore, when the valve is immersed, the pressure outside the second pressure detection end of the pressure sensor does not change due to the fact that the valve is immersed, deviation of the detection result of the pressure sensor can be avoided when the valve is immersed, and accurate detection of the pressure of the flowing medium in the valve by the pressure sensor is achieved.

Further, an outer cover 14 is fixedly connected with the valve body 10, and a through hole is formed at an end of the outer cover 14 connected with the valve body 10.

The present embodiment provides the through hole at the end of the outer cap 14 connected to the valve body 10, so that the external fluid can seal the air inside the outer cap 14 as much as possible when the valve is submerged, thereby preventing the second pressure detecting end of the pressure sensor from being submerged due to the excessive external fluid permeating into the inside of the outer cap 14.

Specifically, the outer cover 14 is provided with a notch 141 towards the end of the valve body 10, and the notch 141 and the side wall of the valve body 10 form a through hole together, which can effectively reduce the difficulty of machining and forming the outer cover 14.

Of course, in other embodiments, the through hole may be directly formed at the end of the outer cap 14 close to the valve body 10.

Further, still include control module 45, pressure sensor passes through cable communication connection with control module 45, and control module 45 is connected to cable one end, and the other end passes the through-hole and is connected with pressure sensor. The pressure sensor of the present embodiment may transmit the measured pressure value to the control module 45.

Specifically, the size relationship between the cable and the through hole is that the cross-sectional size of the through hole is larger than that of the cable, so that the through hole is not blocked when the cable passes through the through hole, the inside of the outer cover 14 cannot be communicated with the outside atmospheric pressure, and a sealing state is formed, and the atmospheric pressure inside the outer cover 14 changes along with the temperature change in the sealing state, so that the pressure sensor cannot accurately measure the pressure inside the valve cavity.

It should be noted that the outer cover 14 and the valve body 10 can be fixedly connected by a screw structure or a snap structure, and the embodiment is not limited herein. For example, in some embodiments, a protruding fastening portion may be disposed on an inner side wall of the outer cover 14 facing the valve body 10, and a concave portion for fastening the fastening portion may be disposed on the valve body 10 or the pressure sensor, and the fastening portion may be fastened to the concave portion during installation, so that the outer cover 14 is fixedly connected to the valve body 10.

In another embodiment of the present invention, as shown in fig. 2-3, the communicating structure is disposed in a position offset from the pressure sensor, so that the medium flowing from the valve cavity into the pressure measuring cavity will not directly impact the pressure sensor.

This embodiment sets up the pressure measurement chamber through communicating structure and valve pocket intercommunication on valve body 10 and installs pressure sensor on the pressure measurement chamber with the staggered position of communicating structure, during the use part liquid in the valve can get into the pressure measurement chamber and keep steady state after being full of whole pressure measurement chamber, pressure sensor can obtain the pressure of the liquid that flows in the valve through the pressure of measuring the pressure measurement intracavity liquid, because the pressure sensor of this embodiment is liquid under keeping steady state in the pressure measurement chamber and detecting, consequently it can not cause the testing result inaccurate because of receiving the impact of the liquid that flows in the valve pocket when detecting.

The utility model discloses an in the embodiment, valve body 10 includes a plurality of valve sections, through helicitic texture fixed connection between the adjacent valve section, the valve pocket is fashioned in the inside of valve section, and the pressure measuring chamber is fashioned in the face of being connected of adjacent valve section. Wherein the valve sections are adapted to be connected to pipes in an irrigation system or other systems, respectively.

It is understood that the specific number of the valve segments can be set reasonably according to actual needs, and can be one, two, three or even more.

Optionally, a groove is arranged on a 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 a pressure measuring cavity, or the grooves on the two valve sections cooperate together to form a pressure measuring cavity. The recess is the annular recess that sets up around the week portion of valve section, and the both sides of recess are provided with the sealing washer. It is understood that the groove may be a full circumference annular groove or a non-full circumference annular groove.

In another embodiment of the present invention, the communicating structure is a communicating hole for communicating the valve cavity with the pressure measuring cavity, the side wall of the pressure measuring cavity is further provided with a sensor mounting hole 111 for mounting the pressure sensor, and the communicating hole and the sensor mounting hole 111 are arranged in a staggered manner.

The pressure measuring cavity of the embodiment is a closed structure, and only the sensor mounting hole 111 and the communication hole are arranged on the pressure measuring cavity, wherein the sensor mounting hole 111 is used for mounting the pressure sensor, and the communication hole is used for communicating the pressure sensor with the valve cavity, so that when the pressure is measured in a stable state, liquid in the pressure measuring cavity is kept still, and the pressure sensor cannot be impacted by flowing liquid in the valve cavity to cause inaccurate detection.

It is understood that the pressure sensor of the present embodiment can be mounted in the sensor mounting hole 111 by a common mounting method such as screwing.

Referring to fig. 3, in an 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 form a second valve cavity 120 and a third valve cavity 130 together with the first valve section 11, and one end of the second valve section 12 and the one end of the third valve section 13 far away from the first valve section 11 can be connected to a pipeline in an irrigation system or other pipeline systems through a connecting piece.

The second valve chamber 120 and the third valve chamber 130 are provided with corresponding pressure measuring chambers, and the two pressure measuring chambers are provided with pressure sensors, so that accurate measurement of the liquid pressure in the second valve chamber 120 and the third valve chamber 130 can be realized. That is, a second pressure measurement chamber is provided corresponding to the second valve chamber 120, a second pressure sensor 123 is provided in the second pressure measurement chamber, a third pressure measurement chamber is provided corresponding to the third valve chamber 130, and a third pressure sensor 133 is provided in the third pressure measurement chamber.

The second pressure sensor 123 has a first pressure detection end facing the second pressure measurement cavity and a second pressure detection end far away from the second pressure measurement cavity, the third pressure sensor 133 has a first pressure detection end facing the third pressure measurement cavity and a second pressure detection end far away from the third pressure measurement cavity, the outer sides of the second pressure detection ends of the second pressure sensor 123 and the third pressure sensor 133 are respectively covered with an outer cover, a through hole is formed in the outer cover, and the second pressure detection ends of the second pressure sensor 123 and the third pressure sensor 133 are respectively communicated with the atmosphere through the through holes of the outer covers on the same side.

Specifically, the second valve section 12 and the third valve section 13 are respectively provided with a second communication hole 121 and a third communication hole 131, the peripheral walls of the second valve section 12 and the third valve section 13 are respectively provided with a second annular groove 122 and a third annular groove 132, and the second annular groove 122 and the third annular groove 132 are respectively communicated with the second communication hole 121 and the third communication hole 131.

The two sides of the second annular groove 122 and the third annular groove 132 are further provided with a sealing ring groove respectively, a sealing ring is installed in the sealing ring groove, and 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 are matched with the inner side wall of the first valve cavity 110 respectively to form a second pressure measuring cavity and a third pressure measuring cavity which are closed.

The first valve segment 11 has two sensor mounting holes 111 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 mounted in the two sensor mounting holes 111, and the two sensor mounting holes 111 are respectively staggered from the second communication hole 121 and the third communication hole 131. It should be noted that the way that the second valve chamber 120 and the third valve chamber 130 are provided with a pressure measuring chamber and a pressure sensor is not a limitation to the present application, and in other embodiments, a scheme that only one of the second valve chamber 120 and the third valve chamber 130 is provided with a pressure measuring chamber and a pressure sensor may also be adopted.

Specifically, referring to fig. 2, a valve core 20 is disposed in the first valve chamber 110, the second valve chamber 120 and the third valve chamber 130 are disposed on two sides of the first valve chamber 110, and the second valve chamber 120 and/or the third valve chamber 130 are selectively controllable to communicate with the first valve chamber 110 by the valve core 20.

Specifically, referring to fig. 5, the valve body 20 is substantially spherical, a first valve hole 201, a second valve hole 202 and a third valve hole 203 are formed in the valve body 20 to communicate with each other, and the valve body 20 is disposed in the first valve chamber 110. In this embodiment, the valve core 20 may be rotated to communicate the second valve chamber 120 and the third valve chamber 130 with the first valve chamber 110 through the first valve hole 201, the second valve hole 202 and the third valve hole 203, and it is understood that the valve hole arrangement structure in the above embodiment can communicate the second valve chamber 120 and the third valve chamber 130 with the first valve chamber 110 at the same time, and in other embodiments, different valve hole arrangement positions may be adopted, or the number of valve holes may be adjusted, so that the second valve chamber 120 and the third valve chamber 130 communicate with the first valve chamber 110 respectively.

Alternatively, referring to fig. 3, both ends of the first valve section 11 are respectively provided with an internal thread, ends of the second valve section 12 and the third valve section 13 are respectively provided with an external thread, and the second valve section 12 and the third valve section 13 are respectively installed inside the first valve section 11 through a thread structure. Of course, in other embodiments, the second valve section 12 and the third valve section 13 may be connected with the first valve section 11 in other manners.

Further, the valve further comprises a driving device 40 disposed 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 for driving the valve core 20 to move in the first valve cavity 110, so as to achieve that the second valve cavity 120 and the third valve cavity 130 are respectively communicated with the first valve cavity 110 or the second valve cavity 120 and the third valve cavity 130 are simultaneously communicated with the first valve cavity 110. The movement of the valve core 20 in the first valve chamber 110 may be rotation or movement or oscillation, and in this embodiment, the valve core 29 is driven by the driving device 40 to rotate in the first valve chamber 110 as an example.

The driving device 40 includes a mounting case 41, and the control module 45 is disposed in the mounting case 41.

Specifically, as shown in fig. 7, the mounting housing 41 includes an upper housing 411 and a lower housing 412 connected up and down, the lower housing 412 is connected to the valve body 10, and the upper housing 411 and the lower housing 412 together enclose the mounting cavity 410.

Furthermore, a power device 42, a transmission assembly 43 and a fitting piece 44 are arranged in the mounting shell 41, the fitting piece 44 is in transmission connection with the valve core 20, the transmission assembly 43 is in transmission connection with the fitting piece 44, and the power device 42 is in transmission connection with the transmission assembly 43.

Specifically, as shown in fig. 7, the transmission assembly 43 includes a first gear 431 and a second gear 432 engaged with each other, and a worm wheel 433 and a worm 434 engaged 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 with the worm 434.

When the transmission assembly 43 works, 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 fitting piece 44 to rotate, and the fitting piece 44 drives the valve core 20 to rotate, so that the second valve chamber 120 and the third valve chamber 130 are controlled to be respectively communicated with the first valve chamber 110, or the second valve chamber 120 and the third valve chamber 130 are controlled to be simultaneously communicated with the first valve chamber 110.

Alternatively, the power device 42 is a drive motor. Of course, in other embodiments, the power device 42 may be other devices.

Further, as shown in fig. 7, 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.

The first valve section 11 and the lower housing 412 have a mounting hole 112 and a second through hole 4121, respectively, the mounting hole 112 and the second through hole 4121 are coaxially disposed, and the fitting 44 is inserted into the first valve chamber 110 through the mounting hole 112 and the second through hole 4121.

As shown in fig. 2 and 5, the valve element 20 is provided with a convex portion 21 in a protruding manner, a valve element engagement groove 1101 engaged with the convex portion 21 is further formed in the outer periphery of the insertion hole 112, and an engagement groove 204 is formed in the convex portion 21. The first engaging portion 441 is adapted to be engaged with the engaging groove 204 of the valve body 20, the second engaging portion 442 is inserted into the axial hole of the worm wheel 433, and the connecting portion 443 is adapted to be inserted into the insertion hole 112 and the second through hole 4121.

Optionally, the transmission assembly 43 further includes a holder 435, and the power device 42, the worm wheel 433 and the worm 434 are disposed in the mounting cavity 410 of the mounting housing 41 through the holder 435.

Specifically, the holder 435 includes an upper frame 4351 and a lower frame 4352 connected together, and the power unit 42, the worm gear 433, and the worm 434 are installed between the upper frame 4351 and the lower frame 4352.

Further, a valve cover 30 is included, and the valve cover 30 is connected with the valve body 10 and used for limiting the valve core 20 in the valve body 10.

Specifically, referring to fig. 2 and 3, a coupling hole 301 is formed in the valve cover 30. The first valve section 11 can be connected to the piping of the irrigation system or other systems through the valve cover 30, and the first valve chamber 110 can be connected to the piping of the irrigation system or other systems through the connection hole 301.

The valve cover 30 includes a first connection section 31 and a second connection section 32. The first connecting section 31 is connected to the first valve section 11 and the second connecting section 32 is adapted to be connected to a pipe of an irrigation system or other system.

That is, in this embodiment, the pipeline connected to the connection hole 301 serves as an input end of the irrigation system, and the liquid enters the first valve chamber 110 through the connection hole 301, then enters the second valve chamber 120 and the third valve chamber 130 from both sides, and is delivered to each position of the irrigation system for irrigation.

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 in threaded connection with the first valve section 11.

Further, the valve described in this embodiment further includes a communication module, and the communication module is disposed on the control module 45 and is used for communicating with the control terminal and the control module 45.

By providing the communication module on the control module 45, the present embodiment can remotely control the valve through the control terminal or the control module 45.

The embodiment of the utility model provides a still provide an irrigation system, it has as above any embodiment the valve.

Further, the irrigation system also comprises a control terminal for controlling the working state of the valve. Through setting up control terminal, this embodiment can be long-rangely controlled the valve for the irrigation system that this embodiment provided is more intelligent.

It is understood that the control terminal may be, but is not limited to, a mobile phone, a tablet computer, a computer, etc.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used merely for convenience in description and simplicity of operation, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such descriptions are provided for clarity, and those skilled in the art will recognize that the embodiments described in the various embodiments can be combined as appropriate to form other embodiments understood by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would also fall within the scope of the present invention.

Claims (11)

1. The valve is characterized by comprising a valve body (10), wherein a valve cavity and a pressure measuring cavity are formed in the valve body (10), the valve cavity is used for conveying flowing media, the valve cavity is communicated with the pressure measuring cavity through a communicating structure, so that the valve cavity is the same as the pressure of the pressure measuring cavity, the pressure measuring cavity is provided with a pressure sensor, the pressure sensor is provided with a first pressure detection end facing the pressure measuring cavity and a second pressure detection end far away from the pressure measuring cavity, an outer cover (14) is sleeved outside the second pressure detection end, and a through hole for communicating the second pressure detection end with the atmospheric pressure is formed in the outer cover (14).

2. Valve according to claim 1, wherein the outer cover (14) is fixedly connected to the valve body (10), and the through hole is provided at the end of the outer cover (14) connected to the valve body (10).

3. Valve according to claim 2, wherein the outer cover (14) is provided with a notch (141) towards the end of the valve body (10), the notch (141) forming the through hole together with the valve body (10).

4. The valve of claim 3, further comprising a control module (45), wherein the pressure sensor is communicatively connected to the control module (45) via a cable, one end of the cable being connected to the control module (45) and the other end of the cable being connected to the pressure sensor through the through hole.

5. Valve according to claim 2, wherein the outer cover (14) is fixedly connected to the valve body (10) by means of a threaded structure or by means of a snap-fit structure.

6. The valve according to any of claims 1-5, wherein said communicating structure is offset from said pressure sensor such that media flowing from said valve chamber into said pressure sensing chamber does not directly impact said pressure sensor.

7. The valve according to claim 6, wherein the valve body (10) comprises a plurality of valve segments, adjacent valve segments are fixedly connected through a thread structure, the valve cavity is formed inside the valve segments, and the pressure measuring cavity is formed on the connecting surface of the adjacent valve segments.

8. The valve according to claim 7, wherein 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 together form the pressure measuring cavity; the groove is an annular groove arranged around the periphery of the valve section, and sealing rings are arranged on two sides of the groove.

9. The valve according to claim 8, wherein the communicating structure is a communicating hole for communicating the valve chamber and the pressure measuring chamber, a sensor mounting hole (111) for mounting the pressure sensor is further arranged on the side wall of the pressure measuring chamber, and the communicating hole and the sensor mounting hole (111) are arranged in a staggered manner.

10. An irrigation system having a valve according to any one of claims 1 to 9.

11. The irrigation system as recited in claim 10, further comprising a control terminal for controlling an operating state of the valve.

Images