A new type of isolation diaphragm type solenoid valve

Abstract

This invention proposes a novel diaphragm-type solenoid valve, comprising a valve body with an inner cavity. Within the inner cavity, from top to bottom, are arranged a mounting base, an isolation diaphragm, and an elastic bladder. The top of the mounting base is fixedly connected to the top wall of the valve body's inner cavity, and an electromagnetic drive assembly is located at the bottom of the mounting base. The isolation diaphragm is slidably connected to the valve body's inner cavity in a vertical direction. A movable iron core is located on the upper surface of the isolation diaphragm corresponding to the electromagnetic drive assembly. At least one spring is located between the isolation diaphragm and the bottom of the mounting base. The top of the elastic bladder is fixedly connected to the isolation diaphragm, and the bottom of the elastic bladder is fixedly connected to the bottom wall of the valve body's inner cavity. An inlet and an outlet are provided on the bottom wall of the valve body's inner cavity. The inlet has an inlet pipe that communicates with the interior of the elastic bladder, and the outlet has an outlet pipe that communicates with the interior of the elastic bladder. This invention can completely isolate the liquid from the metal components, protecting the metal components from corrosion and preventing residual liquid from contaminating the next solution.

Description

Technical Field

[0001] The invention relates to the technical field of solenoid valves, and in particular to a novel isolation diaphragm type solenoid valve. Background Art

[0002] The valve core of the solenoid valve in the prior art is of an up-and-down moving type. When liquid flows in the valve core, it will cause the liquid to contact with the metal parts of the solenoid valve, corrode the parts, and leave residual liquid to pollute the next solution. Summary of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a novel isolation diaphragm type solenoid valve.

[0004] The invention provides a novel isolation diaphragm type solenoid valve, comprising a valve body, the valve body having an inner cavity, and a mounting seat, an isolation diaphragm and an elastic bag are arranged in sequence from top to bottom in the inner cavity of the valve body;

[0005] The top of the mounting seat is fixedly connected to the top wall of the inner cavity of the valve body, an electromagnetic drive assembly is provided at the bottom of the mounting seat, the isolation diaphragm is slidably connected to the inner cavity of the valve body along the vertical direction, a movable iron core is provided at the upper surface of the isolation diaphragm corresponding to the electromagnetic drive assembly, and at least one spring is provided between the isolation diaphragm and the bottom of the mounting seat;

[0006] The top of the elastic bag is fixedly connected to the isolation diaphragm, and the bottom of the elastic bag is fixedly connected to the bottom wall of the inner cavity of the valve body. The bottom wall of the inner cavity of the valve body is provided with a water inlet and a water outlet. The water inlet is provided with a water inlet pipe, which is connected to the inside of the elastic bag. The water outlet is provided with a water outlet pipe, which is connected to the inside of the elastic bag.

[0007] Preferably, the electromagnetic drive assembly includes an electromagnet and a connecting rod, the connecting rod is arranged between the mounting seat and the isolation diaphragm, the middle part of the connecting rod is hinged to the side wall of the inner cavity of the valve body, the movable iron core is arranged on the upper part of the first end of the connecting rod, the electromagnet is installed at the bottom of the mounting seat corresponding to the movable iron core, the bottom of the second end of the connecting rod is hinged to the isolation diaphragm, and the spring is arranged between the first end of the connecting rod and the corresponding part of the mounting seat and the first end of the connecting rod.

[0008] Preferably, the electromagnet includes a fixed iron core and a coil, and a receiving groove for accommodating the coil is provided at the corresponding positions of the mounting seat and the movable iron core. The coil is arranged in the receiving groove, the fixed iron core is coaxially arranged in the coil, and the lower part of the fixed iron core extends out of the receiving groove, and the spring is arranged between the fixed iron core and the movable iron core.

[0009] Preferably, the connection between the water inlet pipe and the elastic bag is arranged on the side corresponding to the elastic bag and the second end of the connecting rod, and the connection between the water outlet pipe and the elastic bag is arranged on the side corresponding to the elastic bag and the first end of the connecting rod.

[0010] Preferably, a first contact portion is provided at the lower portion of the first end of the connecting rod corresponding to the movable iron core, and a second contact portion is provided at the isolation diaphragm corresponding to the first contact portion. When the connecting rod is in a horizontal state, the first contact portion and the second contact portion abut against each other.

[0011] Preferably, the electromagnetic drive assembly includes an electromagnet, a movable iron core is arranged in the middle of the upper surface of the isolation diaphragm, the electromagnet is installed at the bottom of the mounting seat corresponding to the movable iron core, and a spring is arranged between the mounting seat and the isolation diaphragm.

[0012] Preferably, the elastic bag is made of corrosion-resistant resin material.

[0013] In the present invention, liquid enters the elastic bag through the water inlet pipe and flows out of the elastic bag through the water outlet pipe, thereby isolating the liquid from metal parts in the whole process and protecting the metal parts from corrosion; and the magnetic force generated by the electromagnet and the spring cooperate to control the isolation diaphragm to squeeze or release the elastic bag, thereby completing the on-off control of the solenoid valve fluid, which can prevent the residual liquid from contaminating the next solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a novel isolation diaphragm type solenoid valve proposed by the present invention.

[0015] Figure 2 This is a schematic structural diagram of another novel isolation diaphragm type solenoid valve proposed by the present invention.

[0016] Description of reference numerals:

[0017] 1-valve body 2-mounting seat 3-coil 4-fixed iron core 5-movable iron core 6-spring

[0018] 7-connecting rod 8-isolating diaphragm 9-elastic bag 10-water inlet pipe 11-water outlet pipe DETAILED DESCRIPTION

[0019] Reference Figure 1 and Figure 2 The present invention proposes a novel isolation diaphragm type solenoid valve, comprising a valve body 1, the valve body 1 having an inner cavity, in which a mounting seat 2, an isolation diaphragm 8 and an elastic bag 9 are arranged in sequence from top to bottom;

[0020] The top of the mounting seat 2 is fixedly connected to the top wall of the inner cavity of the valve body 1, and an electromagnetic drive assembly is provided at the bottom of the mounting seat 2. The isolation diaphragm 8 is slidably connected to the inner cavity of the valve body 1 along the vertical direction. A movable iron core 5 is provided at a position corresponding to the electromagnetic drive assembly on the upper surface of the isolation diaphragm 8, and at least one spring 6 is provided between the isolation diaphragm 8 and the bottom of the mounting seat 2;

[0021] The top of the elastic bag 9 is fixedly connected to the isolation diaphragm 8, and the bottom of the elastic bag 9 is fixedly connected to the bottom wall of the inner cavity of the valve body 1. The bottom wall of the inner cavity of the valve body 1 is provided with a water inlet and a water outlet. The water inlet is provided with a water inlet pipe 10, and the water inlet pipe 10 is connected to the inside of the elastic bag 9. The water outlet is provided with a water outlet pipe 11, and the water outlet pipe 11 is connected to the inside of the elastic bag 9.

[0022] In the present invention, liquid enters the elastic capsule 9 from the water inlet pipe 10 and flows out of the elastic capsule 9 from the water outlet pipe 11, isolating the liquid from metal parts throughout the process to protect the metal parts from corrosion; and the isolation diaphragm 8 is controlled by the magnetic force generated by the electromagnet and the cooperation of the spring 6 to squeeze or release the elastic capsule 9, thereby completing the control of the on-off of the solenoid valve fluid, and the elastic capsule 9 can be compressed to completely avoid residual liquid and avoid contamination of the next solution.

[0023] Reference Figure 1 In this embodiment, the electromagnetic drive assembly includes an electromagnet and a connecting rod 7, the connecting rod 7 is arranged between the mounting seat 2 and the isolation diaphragm 8, the middle part of the connecting rod 7 is hinged to the inner cavity side wall of the valve body 1, the movable iron core 5 is arranged on the upper part of the first end of the connecting rod 7, the electromagnet is installed at the bottom of the mounting seat 2 corresponding to the movable iron core 5, the bottom of the second end of the connecting rod 7 is hinged to the isolation diaphragm 8, and the spring 6 is arranged between the first end of the connecting rod 7 and the corresponding part of the mounting seat 2 and the first end of the connecting rod 7.

[0024] The connecting rod 7 is a rod-shaped object having a first end and a second end opposite to each other. When used, the electromagnet is energized, the electromagnet generates magnetic force, and the movable iron core 5 is attracted by the magnetic force generated by the electromagnet to drive the first end of the connecting rod 7 to move upward, so that the second end of the connecting rod 7 moves downward, thereby driving the isolation diaphragm 8 hinged to the second end of the connecting rod 7 to slide downward, and the isolation diaphragm 8 squeezes the elastic capsule 9, and the elastic capsule 9 deforms and contracts to block the flow of the liquid while completely squeezing out the liquid in the elastic capsule 9 to avoid contamination of the next solution; when the electromagnet is powered off, the magnetic force disappears, and the movable iron core 5 moves downward under the elastic force of the spring 6, thereby driving the first end of the connecting rod 7 to move downward, the second end of the connecting rod 7 to move upward, and the isolation diaphragm 8 to move upward, and the elastic capsule 9 expands under the dual action of the liquid and the isolation diaphragm 8, so that the water inlet pipe 10 and the water outlet pipe 11 are connected, so that the liquid can circulate.

[0025] In order to facilitate the generation of magnetic force and magnetically attract the movable iron core 5, in this embodiment, the electromagnet includes a fixed iron core 4 and a coil 3, and a receiving groove for receiving the coil 3 is provided at the corresponding position of the mounting seat 2 and the movable iron core 5. The coil 3 is arranged in the receiving groove, and the fixed iron core 4 is coaxially arranged in the coil 3, and the lower part of the fixed iron core 4 extends out of the receiving groove, and the spring 6 is arranged between the fixed iron core 4 and the movable iron core 5. Moreover, the corresponding arrangement of the fixed iron core 4 and the movable iron core 5 can also limit the rotation angle of the connecting rod 7.

[0026] In order to ensure that the elastic capsule 9 is compressed as much as possible and reduce liquid residue, in this embodiment, the connection between the water inlet pipe 10 and the elastic capsule 9 is set on the side of the elastic capsule 9 corresponding to the second end of the connecting rod 7, and the connection between the water outlet pipe 11 and the elastic capsule 9 is set on the side of the elastic capsule 9 corresponding to the first end of the connecting rod 7. When the elastic capsule 9 is compressed, the second end of the connecting rod 7 rotates downward, and the isolation diaphragm 8 hinged to the second end of the connecting rod 7 slides downward under the action of the force of the connecting rod 7 to compress the elastic capsule 9, wherein the connection between the water inlet pipe 10 and the elastic capsule 9 is first compressed by the pressure, the water inlet pipe 10 stops inletting water, and the water in the elastic capsule 9 is discharged from the water outlet pipe 11 under the action of the isolation diaphragm 8, and the liquid in the elastic capsule 9 is completely discharged.

[0027] In order to limit the rotation angle of the connecting rod 7 and thus accurately control the on and off of the solenoid valve, in the present embodiment, a first contact portion is provided at the lower portion of the first end of the connecting rod 7 corresponding to the movable iron core 5, and a second contact portion is provided at the isolation diaphragm 8 corresponding to the first contact portion. When the connecting rod 7 is in a horizontal state, the first contact portion and the second contact portion are in contact with each other.

[0028] Reference Figure 2 In other embodiments, the electromagnetic drive assembly includes an electromagnet, the movable iron core 5 is arranged in the middle of the isolation diaphragm 8, the electromagnet is installed in the middle of the bottom of the mounting seat 2, and the spring 6 is arranged between the mounting seat 2 and the isolation diaphragm 8.

[0029] In order to extend the service life of the elastic bag 9, in the present embodiment, the elastic bag 9 is made of an anti-corrosion resin material.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new type of isolation diaphragm type solenoid valve, characterized in that: The valve body (1) comprises a valve body (1), wherein the valve body (1) has an inner cavity, and a mounting seat (2), an isolation diaphragm (8) and an elastic bag (9) are arranged in sequence from top to bottom in the inner cavity of the valve body (1); The top of the mounting seat (2) is fixedly connected to the top wall of the inner cavity of the valve body (1), the bottom of the mounting seat (2) is provided with an electromagnetic drive assembly, the isolation diaphragm (8) is slidably connected to the inner cavity of the valve body (1) along the vertical direction, a movable iron core (5) is provided on the upper surface of the isolation diaphragm (8) corresponding to the electromagnetic drive assembly, and at least one spring (6) is provided between the isolation diaphragm (8) and the bottom of the mounting seat (2); The top of the elastic bag (9) is fixedly connected to the isolation diaphragm (8), and the bottom of the elastic bag (9) is fixedly connected to the bottom wall of the inner cavity of the valve body (1). The bottom wall of the inner cavity of the valve body (1) is provided with a water inlet and a water outlet. The water inlet is provided with a water inlet pipe (10), and the water inlet pipe (10) is connected to the inside of the elastic bag (9). The water outlet is provided with a water outlet pipe (11), and the water outlet pipe (11) is connected to the inside of the elastic bag (9). The electromagnetic drive assembly comprises an electromagnet and a connecting rod (7), wherein the connecting rod (7) is arranged between the mounting seat (2) and the isolation diaphragm (8), the middle portion of the connecting rod (7) is hinged to the side wall of the inner cavity of the valve body (1), the movable iron core (5) is arranged on the upper portion of the first end of the connecting rod (7), the electromagnet is installed at the bottom of the mounting seat (2) corresponding to the movable iron core (5), the bottom of the second end of the connecting rod (7) is hinged to the isolation diaphragm (8), and the spring (6) is arranged between the first end of the connecting rod (7) and the corresponding portion of the mounting seat (2) and the first end of the connecting rod (7); The electromagnet comprises a fixed iron core (4) and a coil (3); a receiving groove for receiving the coil (3) is provided at the corresponding positions of the mounting seat (2) and the movable iron core (5); the coil (3) is arranged in the receiving groove; the fixed iron core (4) is coaxially arranged in the coil (3); the lower part of the fixed iron core (4) extends out of the receiving groove; and a spring (6) is arranged between the fixed iron core (4) and the movable iron core (5); The connection between the water inlet pipe (10) and the elastic bag (9) is arranged on a side corresponding to the second end of the elastic bag (9) and the connecting rod (7), and the connection between the water outlet pipe (11) and the elastic bag (9) is arranged on a side corresponding to the first end of the elastic bag (9) and the connecting rod (7); A first contact portion is provided at a lower portion of the first end of the connecting rod (7) corresponding to the movable iron core (5), and a second contact portion is provided at a portion of the isolation diaphragm (8) corresponding to the first contact portion. When the connecting rod (7) is in a horizontal state, the first contact portion and the second contact portion are in contact with each other. The elastic bag (9) is made of corrosion-resistant resin material.

Images