Electric valve and irrigation system

Abstract

The utility model discloses an electric valve and an irrigation system. The electric valve comprises a valve body; the controller is connected with the valve body and used for controlling the opening degree of the valve body; the controller comprises a control circuit board, an air pressure sensor is integrated on the control circuit board, the air pressure sensor comprises an induction terminal, the induction terminal is connected with one end of an air guide pipe, the other end of the air guide pipe is connected to the valve body, and the pressure in the valve body is monitored through the air pressure sensor. According to the electric valve, the air pressure sensor is integrated on the control circuit board, during assembly, only the control circuit board needs to be normally installed in place, the air pressure sensor does not need to be independently installed, wiring operation of the air pressure sensor and the control circuit board does not need to be conducted, and therefore the assembly process of the electric valve is simpler, and the assembly efficiency is improved. And the assembly cost is lower.

Description

Technical Field

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

[0002] In the agricultural irrigation scenario, in order to achieve the purpose of precise irrigation, it is necessary to use a fully automatic control electric valve device to adjust the opening degree, and at the same time, a pressure sensor is set on the water conveyance pipeline to monitor and feedback the water pressure in the pipeline in real time. The water pressure detection in the existing electric valves is usually realized by using a pneumatic sensor. Specifically, the sensing end of the pneumatic sensor is connected to the water passing pipeline of the valve through a closed air pipe. When the water pressure in the pipeline changes, the pressure received by the air pipe also changes. At this time, the air pressure in the air pipe will also change accordingly. In other words, the air pressure in the air pipe actually represents the water pressure in the pipeline. Therefore, the purpose of real-time monitoring of the water pressure in the pipeline can be achieved through the pneumatic sensor. However, the pneumatic sensors in the existing electric valves are usually set separately, which requires providing an independent installation space for it and establishing a connection with the circuit board by wiring after installation, resulting in the problem that the assembly process of the electric valve is relatively complex and increasing the assembly cost. Summary of the Utility Model

[0003] The purpose of the embodiments of the present utility model is to provide an electric valve and an irrigation system, which can solve the above problems existing in the prior art.

[0004] To achieve the above purpose, the present application adopts the following technical solutions:

[0005] On the one hand, an electric valve is provided, including:

[0006] A valve body;

[0007] A controller, connected to the valve body, for controlling the opening degree of the valve body; the controller includes a control circuit board, and a pneumatic sensor is integrated on the control circuit board. The pneumatic sensor includes a sensing terminal, one end of a gas guide pipe is connected to the sensing terminal, and the other end of the gas guide pipe is connected to the valve body, and the pressure inside the valve body is monitored through the pneumatic sensor.

[0008] Optionally, the controller includes a housing, and the control circuit board is installed inside the housing; a through hole is provided on the housing, and the gas guide pipe extends into the housing through the through hole to be connected to the sensing terminal.

[0009] Optionally, the gas guide pipe includes a gas guide pipe main body and a gas pipe joint. The gas pipe joint is installed through the through hole, the sensing terminal docks with the gas pipe joint inside the housing, and the gas guide pipe main body docks with the gas pipe joint outside the housing.

[0010] Optionally, a clamping groove is provided on the circumference of the tracheal joint, and the tracheal joint is clamped to the material on the circumference of the through hole through the clamping groove.

[0011] Optionally, the housing includes a first mounting portion and a second mounting portion. The first mounting portion is connected to the valve body, and the second mounting portion is connected to a side of the first mounting portion away from the valve body. A first mounting cavity is formed in the first mounting portion, and a second mounting cavity is formed in the second mounting portion. A speed reduction mechanism is installed in the first mounting cavity, and the control circuit board is installed in the second mounting cavity. And at least one side of the second mounting portion extends laterally relative to the first mounting portion to form a cantilever portion. The air pressure sensor is located in the cantilever portion, and the through hole is located on a side of the cantilever portion close to the valve body.

[0012] Optionally, the housing includes a bottom shell, a middle shell, and a top cover. The first mounting cavity is formed between the bottom shell and the middle shell, and the second mounting cavity is formed between the middle shell and the top cover. The second mounting cavity is isolated from the first mounting cavity.

[0013] Optionally, the bottom shell includes an installation cylinder portion and a support platform connected to a side of the installation cylinder portion close to the middle shell. The support platform extends laterally relative to the installation cylinder portion to form a cantilever plate corresponding to the cantilever portion, and the through hole is provided on the cantilever plate.

[0014] Optionally, the cantilever plate is provided with a convex bump protruding away from the valve body, and the through hole is provided in the convex bump.

[0015] Optionally, the middle shell is provided with an avoidance hole corresponding to the convex bump, and the convex bump is embedded in the avoidance hole.

[0016] Optionally, a mounting groove corresponding to the shape of the control circuit board is provided on a side of the middle shell close to the top cover, and the control circuit board is installed in the mounting groove.

[0017] Optionally, the top cover is buckled on the bottom shell to cover the middle shell therein, and a sealing ring is provided between the top cover and the bottom shell.

[0018] On the other hand, an irrigation system is provided, including the above-mentioned electric valve.

[0019] The beneficial effects of the present application are as follows: The present utility model provides an electric valve and an irrigation system, which are provided with a pressure sensor. The pressure sensor is connected to the valve body through an air duct, enabling the pressure sensor to monitor the pressure inside the valve body. Importantly, the pressure sensor in this solution is integrated on the control circuit board. During assembly, it is only necessary to install the control circuit board in place normally, without the need to separately install the pressure sensor, nor the need to connect the pressure sensor to the control circuit board. Therefore, the assembly process of the electric valve in this solution is simpler and the assembly cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further details the present application with reference to the drawings and embodiments.

[0021] Figure 1 Schematic diagram of the structure of the controller according to an embodiment of the present application;

[0022] Figure 2 Partial enlarged view of the controller according to an embodiment of the present application;

[0023] Figure 3 Schematic diagram of the structure of the controller with the top cover hidden according to an embodiment of the present application;

[0024] Figure 4 is Figure 3 explosion schematic diagram of the structure shown;

[0025] Figure 5 is Figure 4 enlarged view of area A in;

[0026] Figure 6 Schematic diagram of the internal structure of the controller according to an embodiment of the present application;

[0027] Figure 7 is Figure 6 explosion diagram of the structure shown;

[0028] Figure 8 is Figure 7 enlarged view of area B in;

[0029] Figure 9 Schematic diagram of the bottom side structure of the controller according to an embodiment of the present application;

[0030] Figure 10 is Figure 9 enlarged view of area C in.

[0031] In the figure:

[0032] 1. Housing; 11. Bottom case; 111. Mounting cylinder part; 112. Support platform; 1121. Cantilever plate; 1122. Convex hull; 12. Middle case; 121. Mounting groove; 122. Avoidance hole; 13. Top cover; 14. Sealing ring; 2. Control circuit board; 21. Air pressure sensor; 211. Inductive terminal; 3. Motor; 4. Reduction mechanism; 5. Air pipe joint; 51. Card slot. Detailed implementation manners

[0033] To make the technical problems solved by this application, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of this application will be further described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of this application.

[0034] In the description of this application, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.

[0035] In this application, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.

[0036] In the agricultural irrigation scenario, in order to achieve the purpose of precise irrigation, an electric valve device with full-automatic control is required to adjust the opening degree. At the same time, a pressure sensor is set on the water conveyance pipeline to monitor and feedback the water pressure in the pipeline in real time. The water pressure detection in the existing electric valves is usually realized by an air pressure sensor. Specifically, the sensing end of the air pressure sensor is connected to the water passage pipeline of the valve through a closed air pipe. When the water pressure in the pipeline changes, the pressure received by the air pipe will also change. At this time, the air pressure in the air pipe will also change accordingly. In other words, the air pressure in the air pipe actually represents the water pressure in the pipeline. Therefore, the purpose of real-time monitoring of the water pressure in the pipeline can be achieved through the air pressure sensor. However, the air pressure sensors in the existing electric valves are usually set separately, which requires providing an independent installation space for them and connecting them to the circuit board after installation, resulting in a relatively complex assembly process of the electric valve and increasing the assembly cost.

[0037] In order to overcome the above technical problems, an electric valve is provided to simplify its assembly process by redesigned the installation structure inside the electric valve.

[0038] The electric valve of this embodiment includes a valve body (not shown in the figure) and a controller. The valve body can be, but is not limited to, types such as ball valves, butterfly valves, gate valves, etc. For example, when the valve body is a ball valve, it includes a valve housing and a valve core rotatably installed inside the valve housing. The valve core is connected with a valve core rotating shaft, and the valve core rotating shaft extends outside the valve housing and is connected to the controller. By driving the rotation of the valve core through the controller, the opening degree of the valve body is controlled. Among them, according to application requirements, the valve body can be, but is not limited to, two-way valves, three-way valves, four-way valves, etc.

[0039] Referring to Figure 1-10 , the controller includes a control circuit board 2. An air pressure sensor 21 is integrated on the control circuit board 2. The air pressure sensor 21 includes a sensing terminal 211. One end of the sensing terminal 211 is connected to one end of an air pipe, and the other end of the air pipe is connected to the valve body. The pressure inside the valve body is monitored through the air pressure sensor 21.

[0040] Among them, the number of air pressure sensors 21 set on the control circuit board 2 can be one or more, which is specifically set according to actual usage requirements. For example, when the valve body is a two-way valve, in order to realize the pressure monitoring of both ends of the valve body, two air pressure sensors 21 can be set on the control circuit board 2, and an air pipe interface is set at each end of the valve body. Each air pipe interface is respectively connected to an air pressure sensor 21 through an air pipe. Similarly, when the pressure at more points needs to be monitored, an appropriate number of air pressure sensors 21 are adaptively set, and at the same time, each air pressure sensor 21 is respectively connected to the point to be monitored through an air pipe.

[0041] To facilitate the integration of the air pressure sensor 21 onto the control circuit board 2, corresponding pads are provided on the control circuit board 2, and the pins of the air pressure sensor 21 can be soldered and fixed onto the pads.

[0042] In summary, for the electric valve based on this embodiment, the air pressure sensor 21 is connected to the valve body through an air duct, enabling the air pressure sensor 21 to monitor the pressure inside the valve body. Importantly, the air pressure sensor 21 of this solution is integrated onto the control circuit board 2. During assembly, simply install the control circuit board 2 in place normally, without the need to separately install the air pressure sensor 21, nor the need to wire the air pressure sensor 21 and the control circuit board 2. Therefore, the assembly process of the electric valve in this solution is simpler and the assembly cost is lower.

[0043] In one embodiment, the controller includes a housing 1, and the control circuit board 2 is installed inside the housing 1; a through hole is provided on the housing 1, and the air duct extends into the housing 1 through the through hole to connect with the induction terminal 211.

[0044] Installing the control circuit board 2 inside the housing 1 can protect the internal control circuit board 2 and other electronic components from the influence of the external environment, such as moisture, dust, dirt, etc. At the same time, by providing a through hole on the housing 1, the air duct can smoothly pass through the housing 1 and be connected to the induction terminal 211 of the air pressure sensor 21 on the control circuit board 2 located inside the housing 1, achieving structural compactness and functional integrity.

[0045] Preferably, the housing 1 is made of a strong, corrosion-resistant, and weather-resistant material, such as aluminum alloy, stainless steel, or engineering plastic, etc., to ensure its long-term stable operation and resistance to various challenges in the agricultural irrigation environment. The size and position of the through hole should be precisely designed to ensure that the air duct can smoothly pass through and be firmly fixed on the housing 1. At the same time, a sealing element, such as an O-ring or a gasket, is provided around the through hole to prevent water or air from entering the interior of the housing 1 through the through hole.

[0046] Preferably, the control circuit board 2 should be firmly installed inside the housing 1 to prevent loosening or damage under vibration or impact, and screw fixation, snap fixation, etc. can be used.

[0047] In one embodiment, referring to Figure 8 , the air duct includes an air duct main body (not shown in the figure) and an air duct joint 5. The air duct joint 5 is installed through the through hole, the induction terminal 211 docks with the air duct joint 5 inside the housing 1, and the air duct main body docks with the air duct joint 5 outside the housing 1.

[0048] The air duct is set to be composed of an air duct joint 5 and an air duct main body. During the product assembly stage, the air duct joint 5 can be pre-installed on the housing 1 so that it can achieve a good sealed connection with the induction terminal 211 and the housing 1. During on-site installation, according to the usage requirements, the air duct main body can be connected to the point where pressure measurement is required, and the other end of the air duct main body is connected to an air duct joint 5. Moreover, when the air duct main body is worn out after long-term use, the air duct main body can be replaced without disassembling the housing 1 and the air duct joint 5. The replacement process is simpler and there will be no problem of destroying the airtightness of the structure due to disassembly and assembly.

[0049] Preferably, the part of the air duct joint 5 extending outside the housing 1 is set as a tapered joint. The air duct main body is sleeved outside the tapered joint and fixed tightly with a tightening band.

[0050] Preferably, the induction terminal 211 and the air duct joint 5 have an interference fit relationship of hole and shaft. The induction terminal 211 is inserted into the air duct joint 5 to achieve a good airtight connection; or, the diameter of the induction terminal 211 is larger than the aperture of the air duct joint 5, and the induction terminal 211 is closely attached to the end of the air duct joint 5 to achieve a good airtight connection.

[0051] In an embodiment, a clamping groove 51 is provided on the circumference of the air duct joint 5, and the air duct joint 5 is clamped with the material on the circumference of the through hole through the clamping groove 51.

[0052] The circumference of the air duct joint 5 is designed with a clamping groove 51, so that the air duct joint 5 can be clamped and fixed with the material on the circumference of the through hole of the housing 1 through the clamping groove 51. This clamping method not only simplifies the installation process but also provides a stable connection effect.

[0053] Preferably, the material of the air duct joint 5 should have a certain elasticity and toughness so that it can deform under extrusion and penetrate into the through hole during assembly, such as using rubber, elastic plastic, etc.

[0054] In an embodiment, the housing 1 includes a first installation part and a second installation part. The first installation part is connected to the valve body. The second installation part is connected to the side of the first installation part away from the valve body. A first installation cavity is formed in the first installation part, and a second installation cavity is formed in the second installation part. A speed reduction mechanism 4 is installed in the first installation cavity, and the control circuit board 2 is installed in the second installation cavity; and at least one side of the second installation part extends laterally relative to the first installation part to form a cantilever part. The air pressure sensor 21 is located in the cantilever part, and the through hole is located on the side of the cantilever part close to the valve body.

[0055] In the controller, in addition to the control circuit board 2, it also includes a motor 3, a reduction mechanism 4, etc. The output shaft of the motor 3 is drivingly connected to the reduction mechanism 4, and the reduction mechanism 4 is drivingly connected to the valve body, so that the valve body is driven to operate by the motor 3. The motor 3 is electrically connected to the control circuit board 2 to achieve automatic control of the motor 3 by the control circuit board 2. Installing the control circuit board 2 in the second installation cavity of the second installation part is equivalent to installing the control circuit board 2 on the side of the reduction mechanism 4 away from the valve body. In this structure, sufficient installation space can be provided for the control circuit board 2, a better internal layout structure can be provided, and the internal compactness, stability and maintainability are realized.

[0056] Importantly, a cantilever part extending laterally relative to the first installation part is provided in the second installation part. The air pressure sensor 21 is arranged in the cantilever part, and the through hole is located on the side of the cantilever part close to the valve body. Such a design facilitates the direct connection of the air duct from the valve body to the air pressure sensor 21, reduces the length and bending times of the air duct, and reduces the pressure loss and leakage risk. In addition, the structure of the cantilever part can be used to shield above the air duct joint 5 of the air duct, providing protection for the air duct joint 5 and the position where the air duct is connected, and improving the durability.

[0057] In one embodiment, in combination with Figures 2-4 , the housing 1 includes a bottom shell 11, a middle shell 12 and a top cover 13. The first installation cavity is formed between the bottom shell 11 and the middle shell 12, the second installation cavity is formed between the middle shell 12 and the top cover 13, and the second installation cavity is isolated from the first installation cavity.

[0058] Through the precise cooperation of the bottom shell 11, the middle shell 12 and the top cover 13, the isolation between the two installation cavities is realized. This isolation design reduces the mutual interference between mechanical components and electronic components, enables the mechanical components and electronic components to operate in independent environments respectively, improves the safety and stability of the system. At the same time, during maintenance, different components can be more conveniently processed separately, reducing the maintenance cost and difficulty.

[0059] As the uppermost part of the housing 1, the top cover 13 closes the second installation cavity and protects the internal control circuit board 2. Various interfaces, buttons, indicator lights or display screens, etc. can be provided on the top cover 13 according to requirements to facilitate user operation and monitoring.

[0060] In one embodiment, the bottom shell 11 includes an installation cylinder part 111 and a support platform 112 connected to the side of the installation cylinder part 111 close to the middle shell. The support platform 112 extends laterally relative to the installation cylinder part 111 to form a cantilever plate 1121 corresponding to the cantilever part, and the through hole is arranged on the cantilever plate 1121.

[0061] The installation cylinder part 111 is the main part of the bottom shell 11, usually in a cylindrical shape or similar, for installing the reduction mechanism 4. It is connected to the support platform 112, jointly constituting the overall structure of the bottom shell 11. The support platform 112 is connected to the top side of the installation cylinder part 111, playing a role of connecting the upper and lower parts. It also provides a broader platform for the installation of the control circuit board 2 through the cantilever plate 1121 extending laterally, and can also utilize the cantilever structure to provide an installation space for the air pressure sensor 21, so that the sensing terminal 211 of the air pressure sensor 21 can face the valve body after installation, facilitating the connection of the air duct.

[0062] In one embodiment, in combination with Figure 5 and Figure 9 , the cantilever plate 1121 is provided with a convex bump 1122 protruding away from the valve body, and the through hole is arranged in the convex bump 1122.

[0063] Specifically, it can be understood that in the structure of the convex bump 1122, since it protrudes away from the valve body, a corresponding groove structure will be formed on the side facing the valve body. The through hole is arranged in the convex bump 1122. After passing the air pipe joint 5 through the through hole, at least a part of the air pipe joint 5 will be located in the groove of the convex bump 1122, so that the position where the air pipe joint 5 is connected to the main body of the air duct will be surrounded by the convex bump 1122, and this structure strengthens the protection of the air pipe joint 5 and the position connecting the main body of the air duct.

[0064] In one embodiment, the middle shell 12 is provided with an avoidance hole 122 corresponding to the convex bump 1122, and the convex bump 1122 is embedded in the avoidance hole 122.

[0065] Setting the avoidance hole 122 at the position of the middle shell 12 corresponding to the convex bump 1122 for avoidance can provide more sufficient protruding space for the convex bump 1122, that is, increase the depth of the groove formed on the side of the convex bump 1122 facing the valve body. At this time, a larger protection space can be provided for the air pipe joint 5.

[0066] In one embodiment, on the side of the middle shell 12 close to the top cover 13, there is an installation groove 121 corresponding to the shape of the control circuit board 2, and the control circuit board 2 is installed in the installation groove 121.

[0067] By setting the installation groove 121 corresponding to the shape of the control circuit board 2 in the middle shell 12, the precise installation and stable fixation of the control circuit board 2 are realized. This structure not only improves the overall structural compactness of the electric valve, but also enhances the working stability and reliability of the control circuit board 2.

[0068] Preferably, the control circuit board 2 is firmly fixed in the installation groove 121 by appropriate fixing means (such as screws, buckles, etc.).

[0069] In one embodiment, the top cover 13 is buckled on the bottom case 11 to cover the middle case 12 therein, and a sealing ring 14 is arranged between the top cover 13 and the bottom case 11.

[0070] The top cover 13 and the bottom case 11 are configured to be buckled and docked with each other, so that the middle case 12 can be covered between the top cover 13 and the bottom case 11. In this way, by only circumferentially arranging a sealing ring 14 at the splicing position of the top cover 13 and the bottom case 11, the sealing of the internal environment of the entire housing 1 (including the first installation cavity and the second installation cavity) can be achieved, avoiding the problem that external rainwater invades through the splicing gap and damages the internal components. Therefore, with one sealing ring 14, the sealing of the two installation cavities inside the housing 1 can be realized in this solution, which has the advantages of simple structure, low cost and good reliability. Moreover, there is only a splicing seam between the top cover 13 and the bottom case 11 in appearance, and the product appearance is better.

[0071] Preferably, to improve the stability of the middle case 12, the middle case 12 is fixed to the bottom case 11 by screws.

[0072] On the other hand, the present embodiment also provides an irrigation system, including the above-mentioned electric valve.

[0073] Specifically, the irrigation system further includes a water pipe. The electric valve is connected between the water pipes, and the opening degree of the through hole controls the electric valve to control the on-off of the water flow and the water flow rate.

[0074] Based on the electric valve of this embodiment, similarly, the irrigation system of this embodiment has the advantages of simple assembly and good reliability.

[0075] In the description herein, it should be understood that the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0076] In the description of this specification, the description referring to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0077] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0078] The technical principles of the present application have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and should not be construed in any way as limiting the scope of protection of the present application. Based on the explanations herein, those skilled in the art can readily conceive of other specific embodiments of the present application without creative efforts, and these embodiments will fall within the scope of protection of the present application.

Claims

1. An electric valve, characterized in that, Comprising: Valve body; A controller, connected to the valve body, for controlling the opening degree of the valve body; the controller includes a control circuit board (2), and a pressure sensor (21) is integrated on the control circuit board (2). The pressure sensor (21) includes an induction terminal (211). One end of a gas guide pipe is connected to the induction terminal (211), and the other end of the gas guide pipe is connected to the valve body. The pressure inside the valve body is monitored through the pressure sensor (21).

2. The electric valve according to claim 1, characterized in that, The controller includes a housing (1), and the control circuit board (2) is installed inside the housing (1); a through hole is provided on the housing (1), and the gas guide pipe extends into the housing (1) through the through hole to be connected to the induction terminal (211).

3. The electric valve according to claim 2, characterized in that, The gas guide pipe includes a gas guide pipe main body and a gas pipe joint (5). The gas pipe joint (5) is installed through the through hole. The induction terminal (211) docks with the gas pipe joint (5) inside the housing (1), and the gas guide pipe main body docks with the gas pipe joint (5) outside the housing (1).

4. The electric valve according to claim 3, characterized in that, A clamping groove (51) is provided on the circumference of the gas pipe joint (5), and the gas pipe joint (5) is clamped with the material on the circumference of the through hole through the clamping groove (51).

5. The electric valve according to claim 2, characterized in that, The housing (1) includes a first installation part and a second installation part. The first installation part is connected to the valve body, and the second installation part is connected to the side of the first installation part away from the valve body. A first installation cavity is formed in the first installation part, and a second installation cavity is formed in the second installation part. A speed reduction mechanism (4) is installed in the first installation cavity, and the control circuit board (2) is installed in the second installation cavity; and at least one side of the second installation part extends laterally relative to the first installation part to form a cantilever part. The pressure sensor (21) is located in the cantilever part, and the through hole is located on the side of the cantilever part close to the valve body.

6. The electric valve according to claim 5, characterized in that, The housing (1) includes a bottom shell (11), a middle shell (12) and a top cover (13). The first installation cavity is formed between the bottom shell (11) and the middle shell (12), and the second installation cavity is formed between the middle shell (12) and the top cover (13). The second installation cavity is isolated from the first installation cavity.

7. The electric valve according to claim 6, characterized in that, The bottom shell (11) includes an installation cylinder part (111) and a support platform (112) connected to the side of the installation cylinder part (111) close to the middle shell (12). The support platform (112) extends laterally relative to the installation cylinder part (111) to form a cantilever plate (1121) corresponding to the cantilever part. The through hole is provided on the cantilever plate (1121).

8. The electric valve according to claim 7, characterized in that The cantilever plate (1121) is provided with a convex bump (1122) protruding away from the valve body, and the through hole is provided in the convex bump (1122).

9. The electric valve according to claim 8, characterized in that, The middle shell (12) is provided with an avoidance hole (122) corresponding to the convex bump (1122), and the convex bump (1122) is embedded in the avoidance hole (122).

10. The electric valve according to claim 6, characterized in that, On one side of the middle shell (12) close to the top cover (13), there is an installation groove (121) corresponding to the shape of the control circuit board (2), and the control circuit board (2) is installed in the installation groove (121).

11. The electric valve according to claim 6, characterized in that, The top cover (13) is buckled on the bottom shell (11) to cover the middle shell (12) therein, and a sealing ring (14) is arranged between the top cover (13) and the bottom shell (11).

12. An irrigation system, characterized in that, It includes the electric valve according to any one of claims 1-11.

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