Double-channel diaphragm type electromagnetic valve

Abstract

The utility model discloses a double-channel diaphragm type electromagnetic valve which comprises a valve seat (1) and an iron frame (2), a liquid inlet pipe (3) is arranged at the bottom of the valve seat (1), circulation cavities (4) are symmetrically formed in the valve seat (1), the liquid inlet pipe (3) is communicated with the circulation cavities (4) on the two sides, and an opening and closing opening (5) is formed in the center of each circulation cavity (4). One side of the circulation cavity (4) is communicated with a liquid outlet pipe (6); a framework (7) is arranged at the upper end of the valve seat (1) and located at an opening of the circulation cavity (4), and a coil (8) is arranged on the outer side of the framework (7). Through the arrangement of the double-electromagnet structure, independent control over the double outlets is achieved, the circulation smoothness of liquid media is improved, and cleaning operation is not affected.

Description

Technical Field

[0001] The utility model relates to the field of electromagnetic valves, in particular to a double-channel diaphragm type electromagnetic valve. Background Art

[0002] With the rise of autonomous driving technology, the application of LiDAR systems has also increased, and it is very important to ensure the surface cleanliness of LiDAR. In order to effectively clean the LiDAR, two cleaning nozzles are usually set up, and the solenoid valve is an important device for controlling the on and off of the cleaning agent in the LiDAR cleaning system. The solenoid valve has a short response time and a large flow rate when it is opened, and the valve body itself must be able to withstand sufficiently large pressure. The existing one-inlet and two-outlet solenoid valves are usually controlled by only one electromagnet, and the on and off mode is relatively simple. It is impossible to control the on and off of the medium of a single outlet alone. In response to the situation of short response time and large flow rate, this type of solenoid valve is easily blocked by impurities or stuck due to rust on the iron core during use, which reduces the smoothness of the liquid discharge and affects its use. Utility Model Content

[0003] The purpose of the utility model is to provide a dual-channel diaphragm electromagnetic valve. The utility model realizes the separate control of dual outlets by setting a dual electromagnet structure, improves the smoothness of liquid medium circulation, and does not affect the cleaning operation.

[0004] The technical solution of the utility model is as follows: a dual-channel diaphragm solenoid valve comprises a valve seat and an iron frame, a liquid inlet pipe is provided at the bottom of the valve seat, a circulation cavity is symmetrically provided on the valve seat, the liquid inlet pipe is connected with the circulation cavity on both sides, an opening and closing port is provided at the center of the circulation cavity; a liquid outlet pipe is connected to one side of the circulation cavity; a frame is provided at the upper end of the valve seat and at the opening of the circulation cavity, a coil is provided on the outside of the frame, a yoke plate is provided in the groove at the lower end of the frame, a magnetic movable part is provided in the frame, the movable end of the magnetic movable part is connected with a rubber diaphragm matched with the opening and closing port, and the lower end of the frame is in conflict with the edge of the rubber diaphragm.

[0005] In the above-mentioned dual-channel diaphragm solenoid valve, valve ears for fixing are provided at both ends of the valve seat.

[0006] In the aforementioned dual-channel diaphragm solenoid valve, a plurality of serrations are provided on both sides of the lower end of the iron frame, and bayonet holes are provided on the serrations; and engaging portions that fit with the bayonet holes are provided on both sides of the valve seat.

[0007] In the aforementioned dual-channel diaphragm solenoid valve, the magnetic movable part includes a static iron core arranged in a frame, and the upper end of the static iron core is clamped on the upper end of the iron frame; a moving iron core is arranged in the frame, and the upper end of the moving iron core is provided with a spring connected to the lower end of the static iron core, and the rubber diaphragm is arranged at the lower end of the moving iron core.

[0008] In the aforementioned dual-channel diaphragm solenoid valve, the rubber diaphragm is sleeved on the lower end of the moving iron core.

[0009] In the aforementioned dual-channel diaphragm solenoid valve, a rubber pad is provided at the upper end of the moving iron core, and the spring is arranged through the rubber pad.

[0010] In the aforementioned dual-channel diaphragm solenoid valve, the opening and closing port is a conical structure, and the diameter of the opening and closing port is smaller than the diameter of the central end surface of the rubber diaphragm.

[0011] In the aforementioned dual-channel diaphragm solenoid valve, the static iron core is connected to the iron frame through a twisted structure.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. In the utility model, the liquid inlet pipe is connected with the circulation chambers on both sides, the opening and closing ports in a single circulation chamber are matched with the rubber diaphragm, the rubber diaphragm is connected with the corresponding magnetic movable part, the magnetic movable part controls the fit and separation of the rubber diaphragm and the opening and closing ports, the diaphragm structure realizes the isolation of the circulating liquid and the magnetic movable part, and each liquid outlet pipe is provided with a separate magnetic control part for liquid outlet control. When a single channel has a problem, the other channel can circulate normally, ensuring smooth liquid outlet without affecting the cleaning operation.

[0014] 2. The iron frame and the valve seat are twisted together using a serrated structure to improve the firmness of the installation.

[0015] 3. The rubber pad is set so that when the static iron core and the moving iron core are in contact and running, the magnetic force generated after the solenoid valve is energized and the force of the moving iron core hitting the static iron core is reduced, thereby reducing the wear of the iron core and ensuring the stability of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is an explosion diagram of the utility model;

[0018] Figure 3 is a schematic diagram of the valve seat;

[0019] Figure 4 It is a cross-sectional schematic diagram of a single channel of the utility model;

[0020] Figure 5 It is a cross-sectional schematic diagram of the dual-channel of the utility model.

[0021] Explanation of the marks in the accompanying drawings: 1-valve seat, 2-iron frame, 3-liquid inlet pipe, 4-circulation chamber, 5-opening and closing port, 6-liquid outlet pipe, 7-skeleton, 8-coil, 9-yoke plate, 10-magnetic movable part, 11-rubber diaphragm, 12-valve ear, 13-serrated part, 14-bayonet, 15-clamping part, 101-static iron core, 102-moving iron core, 103-spring, 104-rubber pad. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0023] Embodiment: A dual-channel diaphragm solenoid valve comprises a valve seat 1 and an iron frame 2, as shown in the attached Figure 1 As shown, the bottom of the valve seat 1 has a liquid inlet pipe 3, and both ends of the valve seat 1 have valve ears 12 for fixing. Bolts are installed in the valve ears to facilitate the installation of the entire solenoid valve. The valve seat 1 has a symmetrical flow cavity 4. Figure 3 As shown, the liquid inlet pipe 3 is connected with the flow chamber 4 on both sides, and the center of the flow chamber 4 has an opening and closing port 5; one side of the flow chamber 4 is connected with a liquid outlet pipe 6; a frame 7 is provided at the upper end of the valve seat 1 and located at the opening of the flow chamber 4, and a groove for placing the valve seat is provided at the upper end of the valve seat, and a coil 8 is provided on the outer side of the frame 7, as shown in the attached Figure 2 As shown, a yoke plate 9 is stuck in the groove at the lower end of the skeleton 7. The yoke plate mainly enhances the magnetic force generated when power is turned on. The yoke plate is divided into two pieces, and the two yoke plates are snapped together and spliced ​​into one piece. The yoke plate is formed by stamping, which has low processing cost and is easy to install. A magnetic movable part 10 is installed in the skeleton 7. The movable end of the magnetic movable part 10 is connected to a rubber diaphragm 11 that matches the opening and closing port 5. The magnetic movable part 10 includes a static iron core 101 arranged in the skeleton 7, as shown in the attached Figure 4 and 5As shown, the upper end of the static iron core 101 is clamped on the upper end of the iron frame 2, and the static iron core 101 is connected to the iron frame 2 through a twisted structure. The static iron core is fixed to the iron frame by twisting, which can prevent the vehicle from falling off due to vibration; the skeleton 7 is provided with a moving iron core 102, and the upper end of the moving iron core 102 is installed with a spring 103 connected to the lower end of the static iron core 101, and the rubber diaphragm 11 is arranged at the lower end of the moving iron core 102, and the rubber diaphragm 11 is sleeved on the lower end of the moving iron core 102. The rubber diaphragm is sleeved for easy installation. The rubber diaphragm is made of high-temperature hydrolysis-resistant and low-temperature-resistant materials. The edge adopts an "X"-shaped structure, which has a better sealing effect than the traditional O-type. The flat bottom structure in the middle cooperates with the opening and closing mouth to form a dynamic sealing structure. The lower end of the skeleton 7 conflicts with the edge of the rubber diaphragm 11. The opening and closing mouth 5 is a conical table structure, and the diameter of the opening and closing mouth 5 is smaller than the diameter of the central end face of the rubber diaphragm 11, which improves the sealing performance when the opening and closing mouth is closed. The positions of the liquid outlet pipe and the liquid inlet pipe are arranged at a certain distance and at right angles, which can effectively reduce the impact of water hammer when closing the valve. The rubber diaphragm can prevent the fluid medium from contacting the driving components, effectively avoiding the problem of impurities in the medium causing the moving iron core to get stuck and rust. The magnetic moving parts on both sides control the flow of the medium, which can achieve the control mode of simultaneous opening and closing and separate opening and closing, realizing the purpose of functional integration and lightweight.

[0024] The lower end of the iron frame 2 has a plurality of serrations 13 on both sides, and the serrations 13 have bayonet holes 14; the valve seat 1 has engaging portions 15 on both sides that match the bayonet holes 14, and the iron frame and the valve seat are twisted with a serration structure to improve the firmness of the matching installation.

[0025] A rubber pad 104 is provided at the upper end of the moving iron core 102, and the spring 103 is arranged through the rubber pad 104. The rubber pad is arranged so that when the static iron core and the moving iron core are in contact operation, the magnetic force generated after the solenoid valve is energized and the force of the moving iron core hitting the static iron core is reduced, thereby reducing the wear of the iron core, thereby ensuring the stability of the solenoid valve operation.

[0026] The working principle of the utility model is as follows: the liquid inlet pipe is connected with the circulation chambers on both sides, the opening and closing ports in a single circulation chamber are matched with the rubber diaphragm, the rubber diaphragm is connected with the corresponding magnetic movable part, the magnetic movable part controls the fitting and separation of the rubber diaphragm and the opening and closing ports, the diaphragm structure realizes the isolation of the circulating liquid and the magnetic movable part, each liquid outlet pipe is provided with a separate magnetic control part for liquid outlet control, when a single channel has a problem, the other channel can circulate normally, ensuring smooth liquid outlet without affecting the cleaning operation.

Claims

1. A dual-channel diaphragm solenoid valve, comprising a valve seat (1) and an iron frame (2), characterized in that: The bottom of the valve seat (1) is provided with a liquid inlet pipe (3), and the valve seat (1) is symmetrically provided with a circulation cavity (4), the liquid inlet pipe (3) is connected with the circulation cavity (4) on both sides, and the central part of the circulation cavity (4) is provided with an opening and closing port (5); one side of the circulation cavity (4) is connected with a liquid outlet pipe (6); the upper end of the valve seat (1) and located at the opening of the circulation cavity (4) is provided with a frame (7), a coil (8) is provided on the outside of the frame (7), a yoke plate (9) is provided in the groove at the lower end of the frame (7), and a magnetic movable part (10) is provided in the frame (7), and the movable end of the magnetic movable part (10) is connected to a rubber diaphragm (11) matched with the opening and closing port (5), and the lower end of the frame (7) is in conflict with the edge of the rubber diaphragm (11).

2. The dual-channel diaphragm solenoid valve according to claim 1, characterized in that: Valve ears (12) for fixing are provided at both ends of the valve seat (1).

3. The dual-channel diaphragm solenoid valve according to claim 1, characterized in that: A plurality of sawtooth portions (13) are provided on both sides of the lower end of the iron frame (2), and a bayonet (14) is provided on the sawtooth portions (13); and a clamping portion (15) matching with the bayonet (14) is provided on both sides of the valve seat (1).

4. The dual-channel diaphragm solenoid valve according to claim 1, characterized in that: The magnetic movable part (10) comprises a static iron core (101) arranged in a frame (7), the upper end of the static iron core (101) being clamped on the upper end of the iron frame (2); a moving iron core (102) is arranged in the frame (7), the upper end of the moving iron core (102) is provided with a spring (103) connected to the lower end of the static iron core (101), and the rubber diaphragm (11) is arranged at the lower end of the moving iron core (102).

5. The dual-channel diaphragm solenoid valve according to claim 4, characterized in that: The rubber diaphragm (11) is sleeved on the lower end of the moving iron core (102).

6. The dual-channel diaphragm solenoid valve according to claim 4, characterized in that: A rubber pad (104) is provided at the upper end of the moving iron core (102), and the spring (103) is arranged through the rubber pad (104).

7. The dual-channel diaphragm solenoid valve according to claim 1, characterized in that: The opening and closing opening (5) is a conical structure, and the diameter of the opening and closing opening (5) is smaller than the diameter of the central end surface of the rubber diaphragm (11).

8. The dual-channel diaphragm solenoid valve according to claim 4, characterized in that: The static iron core (101) is connected to the iron frame (2) via a twisted structure.

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