Electromagnetic valve

Abstract

A water inlet and a water outlet are formed in the two ends of the valve body respectively, a main channel is arranged in the valve body, a diaphragm is arranged on the main channel, a valve cover is arranged on the outer side of the valve body, a push rod corresponding to the diaphragm is arranged on the valve cover, the push rod vertically moves on the valve cover, and the inner end of the push rod controls the distance between the diaphragm and the main channel so that the flow can be adjusted easily. A pilot passage is arranged in the valve cover, one end of the pilot passage is connected with the position above the diaphragm in the valve cover, one end of the pilot passage is connected with the water outlet end of the valve body, a sealing block is arranged in the pilot passage, an electromagnet for controlling the sealing block is arranged outside the valve cover, the electromagnet is electrified to open the pilot passage by the sealing block, so that the water pressure on the two sides of the diaphragm is balanced, and the diaphragm opens the main passage; the valve is more reliable in sealing, has multiple opening and closing modes, is safer and more reliable when an accidental fault occurs, has a flow adjusting function, and is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to an electromagnetic valve. Background Technology

[0002] With the large-scale centralized cultivation of land, farmland irrigation and garden irrigation have placed higher demands on valves, mainly reflected in:

[0003] 1. Solenoid valves, when paired with sensors and remote monitoring, can achieve intelligent remote control via PLC, saving labor costs;

[0004] 2. It has the function of arbitrarily selecting various AC and DC power supplies, and can adapt well to various power supply sources on site;

[0005] 3. In the event of a circuit failure, it has the function of manually opening and closing valves on site;

[0006] 4. It has the function of adjusting the flow rate.

[0007] Many domestic manufacturers began researching and producing this product years ago, but the following problems exist in its current use: 1. The main valve sealing surface is flat, which makes it prone to leakage and is not conducive to sealing; 2. The entire appearance is the same color (mostly all black), and the manual switch is a very small part that is not easily found and identified by the user; 3. The main valve passage has no flow regulation function or only has the function of adjusting the flow rate, and does not have the function of closing the valve in an emergency; 4. It does not have multiple valve opening and closing schemes in an emergency. Utility Model Content

[0008] To overcome the shortcomings of the existing technology, this utility model provides a solenoid valve that effectively solves the above-mentioned problems of solenoid valves.

[0009] The technical solution to the technical problem is as follows: a solenoid valve, including a valve body with an inlet and an outlet at both ends, a main passage within the valve body, a diaphragm on the main passage, a valve cover on the outside of the valve body, and a push rod corresponding to the diaphragm on the valve cover. The push rod moves vertically on the valve cover, and its inner end controls the distance between the diaphragm and the main passage, thus easily adjusting the flow rate. A pilot passage is provided inside the valve cover, with one end connected to the position above the diaphragm inside the valve cover and the other end connected to the outlet end of the valve body. A sealing block is provided inside the pilot passage, and an electromagnet is provided outside the valve cover to control the sealing block. When the electromagnet is energized, the sealing block opens the pilot passage, balancing the water pressure on both sides of the diaphragm, and the diaphragm opens the main passage.

[0010] Preferably, the outer end of the main passage is provided with an R-angle.

[0011] Preferably, the diaphragm has multiple through holes located outside the sealing ring that contacts the main passage.

[0012] Preferably, the push rod has a handle at its outer end, which is threaded to the valve cover. Rotating the handle can adjust the position of the push rod.

[0013] Preferably, the pilot passage is provided with a pointed tip, and the sealing block contacts the pointed tip to block the pilot passage.

[0014] Preferably, an armature is connected to the outside of the sealing block, and a spring is provided between the armature and the electromagnet. The spring pushes the armature to block the pilot passage.

[0015] Preferably, the outer end of the valve cover is provided with a manual switch, the inner end of the manual switch extends into the pilot passage, and the inner end of the manual switch is provided with a toggle block. When the manual switch is rotated, the toggle block pushes the sealing block to open the pilot passage.

[0016] This utility model has the following advantages: the valve has a more reliable seal and multiple opening and closing methods, making it safer and more reliable in case of unexpected failures. It also has a flow rate adjustment function, can be remotely controlled intelligently, saves manpower, and improves efficiency. The main materials are plastic and rubber parts, so there will be no rusting and no pollution to the water source. It can be matched with different power supplies on site and has strong adaptability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an electromagnetic valve according to this utility model.

[0018] Figure 2 This is a cross-sectional schematic diagram of an electromagnetic valve according to this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the diaphragm in an electromagnetic valve according to this utility model.

[0020] Figure 4 This is a schematic diagram of the manual switch in a solenoid valve according to this utility model.

[0021] Figure 5 This utility model relates to a solenoid valve. Figure 2 Enlarged structural diagram at point A in the middle. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0023] Depend on Figures 1 to 5It is known that a solenoid valve includes a valve body 1, with an inlet 2 and an outlet 3 at both ends of the valve body 1. A main passage 4 is provided inside the valve body 1, and a diaphragm 5 is provided on the main passage 4. A valve cover 6 is provided on the outside of the valve body 1, and a push rod 7 corresponding to the diaphragm 5 is provided on the valve cover 6. The push rod 7 moves vertically on the valve cover 6, and the inner end of the push rod 7 controls the distance between the diaphragm 5 and the main passage 4, so as to adjust the flow rate. A pilot passage 8 is provided inside the valve cover 6. One end of the pilot passage 8 is connected to the position above the diaphragm 5 inside the valve cover 6, and the other end of the pilot passage 8 is connected to the outlet 3 of the valve body 1. A sealing block 9 is provided inside the pilot passage 8, and an electromagnet 10 is provided outside the valve cover 6 to control the sealing block 9. When the electromagnet 10 is energized, the sealing block 9 opens the pilot passage 8, so that the water pressure on both sides of the diaphragm 5 is balanced, and the diaphragm 5 opens the main passage 4.

[0024] In practical use, this utility model

[0025] In the initial state, diaphragm 5 blocks the main passage 4, and pilot passage 8 is closed. Water enters the valve body 1 from inlet 2. Due to the pressure difference on both sides of diaphragm 5, the main passage 4 cannot be opened. When the valve needs to be opened, electromagnet 10 is energized, causing sealing block 9 to open pilot passage 8. Water reaches the other side of diaphragm 5 through pilot passage 8, balancing the water pressure on both sides of diaphragm 5, so that diaphragm 5 can open the main passage 4, thus opening the valve.

[0026] In this valve, the position of the push rod 7 can be adjusted up and down, so that the opening range between the diaphragm 5 and the main passage 4 changes accordingly, thereby regulating the flow rate. In an emergency, the push rod 7 can be moved to the innermost end, pressing the diaphragm 5 against the main passage 4 to close the valve.

[0027] The outer end of the main passage 4 is provided with an R-angle 11, and the contact surface with the diaphragm 5 is in a ring-shaped contact, with fewer contact points. When a defect or other situation occurs at one of the points, since the diaphragm 5 itself is made of rubber, it can produce corresponding deformation to compensate for the defect, thereby achieving a seal on the main passage 4 and reducing the risk of leakage.

[0028] Multiple through holes 12 are provided on the diaphragm 5. The multiple through holes 12 are located outside the sealing ring where the diaphragm 5 contacts the main passage 4. The pilot passage 8 is connected to the upper position of the diaphragm 5. After water enters the valve body 1 from the inlet 2, it needs to pass through the through holes 12 to reach the upper position of the diaphragm 5 so as to enter the pilot passage 8. The through holes 12 allow the diaphragm 5 to pass through from top to bottom, so that the water pressure on the diaphragm 5 at the position of the main passage 4 is downward to press the diaphragm 5, thereby realizing the function of the valve.

[0029] When the diaphragm 5 opens the main passage 4, the pilot passage 8 closes. The water pressure below the diaphragm 5 is greater than the water pressure above it, and water flows directly into the main passage 4 from the inlet 2 without having to pass through the diaphragm 5 repeatedly, thus ensuring smooth water flow.

[0030] The push rod 7 has a handle 13 at its outer end. The handle 13 is threadedly connected to the valve cover 6. Rotating the handle 13 can adjust the position of the push rod 7. In the event of a circuit failure or the pilot passage 8 being unable to effectively control the opening and closing of the pilot passage 8, the push rod 7 can be controlled by rotating the handle 13, thereby enabling the diaphragm 5 to open and close the main passage 4 and regulate the flow rate.

[0031] A nozzle 14 is provided inside the pilot passage 8. The sealing block 9 contacts the nozzle 14 to block the pilot passage 8. An armature 15 is connected to the outside of the sealing block 9. A spring 16 is provided between the armature 15 and the electromagnet 10. The spring 16 pushes the armature 15 to block the sealing block 9 from blocking the pilot passage 8. A manual switch 17 is provided at the outer end of the valve cover 6. The inner end of the manual switch 17 extends into the pilot passage 8. A toggle block 18 is provided at the inner end of the manual switch 17. When the manual switch 17 is rotated, the toggle block 18 pushes the sealing block 9 to open the pilot passage 8.

[0032] In the event of a solenoid valve malfunction, the pilot passage 8 can be controlled via manual switch 17. Rotating manual switch 17 causes the toggle block 18 at the inner end of manual switch 17 to push the sealing block 9 upward, thereby opening the pilot passage 8. Rotating manual switch 17 in the opposite direction causes the spring 16 to reset the sealing block 9, thus closing the pilot passage 8.

[0033] Meanwhile, the manual switch 17 is designed to be a bright red color, making it easy for users to spot.

[0034] This valve has three opening and closing methods: (1) Electrical control, which is connected to remote control via circuit to realize the automatic opening and closing of the valve; (2) Manual opening and closing of pilot passage 8, which is designed with a manual switch 17, which controls the pilot passage 8 to open and close the valve; (3) Opening and closing of main passage 4, which is equipped with an adjustment handle 13, which can be used to manually open and close the valve.

[0035] The opening and closing of this valve is mainly achieved by electromagnet 10. Manual operation is only used when electromagnet 10 fails. Electromagnet 10 can be configured with different AC and DC power supplies to adapt to various power supplies in different environments, thus improving its adaptability.

[0036] Compared with the prior art, this utility model has the following advantages:

[0037] An R-angle is set at the connection between the main passage and the membrane to reduce the contact area between the edge of the main passage and the membrane, thereby making it easier for the membrane to seal the main passage and reducing the risk of leakage.

[0038] The manual switch is red, which is more vibrant and easier for users to identify.

[0039] The main channel has a flow regulation function and can open and close the invention in the event of a circuit failure.

[0040] In an emergency, it has multiple opening and closing modes, which do not affect the normal use of the valve.

Claims

1. A solenoid valve, characterized in that, The valve body (1) has an inlet (2) and an outlet (3) at its two ends. A main passage (4) is located inside the valve body (1), and a diaphragm (5) is mounted on the main passage (4). A valve cover (6) is located outside the valve body (1), and a push rod (7) corresponding to the diaphragm (5) is mounted on the valve cover (6). The push rod (7) moves vertically on the valve cover (6), and the inner end of the push rod (7) controls the distance between the diaphragm (5) and the main passage (4), thus easily adjusting the flow rate. The valve body (6) is equipped with a pilot passage (8). One end of the pilot passage (8) is connected to the upper position of the diaphragm (5) inside the valve cover (6), and the other end of the pilot passage (8) is connected to the outlet (3) of the valve body (1). A sealing block (9) is provided inside the pilot passage (8), and an electromagnet (10) is provided outside the valve cover (6) to control the sealing block (9). When the electromagnet (10) is energized, the sealing block (9) opens the pilot passage (8), so that the water pressure on both sides of the diaphragm (5) is balanced, and the diaphragm (5) opens the main passage (4).

2. The solenoid valve according to claim 1, characterized in that, The main passage (4) has an R-angle (11) at its outer end.

3. The solenoid valve according to claim 1, characterized in that, The diaphragm (5) has multiple through holes (12) located outside the sealing ring between the diaphragm (5) and the main passage (4).

4. A solenoid valve according to claim 1, characterized in that, The push rod (7) is provided with a handle (13) at its outer end. The handle (13) is threadedly connected to the valve cover (6). Rotating the handle (13) can adjust the position of the push rod (7).

5. A solenoid valve according to claim 1, characterized in that, The pilot passage (8) is provided with a nozzle (14), and the sealing block (9) contacts the nozzle (14) to block the pilot passage (8).

6. A solenoid valve according to claim 1, characterized in that, An armature (15) is connected to the outside of the sealing block (9). A spring (16) is provided between the armature (15) and the electromagnet (10). The spring (16) pushes the armature (15) to block the pilot passage (8).

7. A solenoid valve according to claim 1, characterized in that, The valve cover (6) is provided with a manual switch (17) at its outer end. The inner end of the manual switch (17) extends into the pilot passage (8). The inner end of the manual switch (17) is provided with a toggle block (18). When the manual switch (17) is rotated, the toggle block (18) pushes the sealing block (9) to open the pilot passage (8).

Images