Lever type stop valve

Abstract

The utility model relates to a lever type cut-off valve which is characterized in that an electromagnetic part is arranged in a valve body and comprises a movable iron core and an electromagnetic driving part, and a valve closing piece is arranged at the end, exposed out of the valve body, of the movable iron core; the valve port is arranged on one side adjacent to the movable iron core; the lever part comprises a support and a lever, the support is fixed to the valve body, the lever is rotationally connected to the support through a pin shaft, a torsional spring is arranged on the pin shaft, one end of the lever extends to the movable iron core and is located between the valve closing piece and the valve opening piece, and the other end of the lever extends to the valve port and is provided with a valve plug; when the movable iron core pops out of the valve body, the valve closing piece pokes one end of the lever until the valve plug at the other end of the lever closes the valve port; when the movable iron core is sucked into the valve body, the valve opening piece pokes one end of the lever, the valve plug at the other end of the lever is separated from the valve port, and the torsional spring enables the valve plug at the other end of the lever to move towards the side away from the valve port. The lever type valve has the advantages that through the lever type design and the torsion spring, the force for closing the valve plug or keeping away from the valve port is increased, and the situation that the valve cannot be opened is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to a lever type cut-off valve. Background Art

[0002] Electromagnetic shut-off valves are often used in gas systems and other fields. The shut-off valve includes a valve body, which is provided with a valve port and an electromagnetic part. The electromagnetic part includes a moving iron core, a valve plug arranged at the end of the moving iron core, and an electromagnetic driving part for driving the moving iron core. The moving iron core is moved by turning on and off the power, so that the valve plug can approach or move away from the valve port to control the on and off of the flow channel in the valve port.

[0003] like Figure 1 The figure shows the electromagnetic part of the commonly used electromagnetic cut-off valve. The valve port (not shown in the figure) is located directly below the moving iron core. A valve plug is provided at the lower end of the moving iron core. The moving iron core moves straight up and down to drive the valve plug to approach or move away from the valve port. Under normal circumstances, the moving iron core can drive the valve plug to leave the valve port, but when the valve port is large, a large valve plug matching the valve port needs to be provided. When the valve port is closed for a long time, the rubber valve plug will stick to the valve port, causing the moving iron core to be unable to lift the valve plug upward.

[0004] Based on this, this case is brought forward. Utility Model Content

[0005] The purpose of the utility model is to provide a lever type cut-off valve to solve the above-mentioned defects.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A lever-type cut-off valve comprises a valve body, wherein the valve body is provided with:

[0008] The electromagnetic part includes a moving iron core and an electromagnetic driving part for driving the moving iron core to move axially, and the end of the moving iron core exposed from the valve body is provided with a valve closing member and a valve opening member;

[0009] A valve port is arranged on a side adjacent to the moving iron core;

[0010] The lever part includes a bracket and a lever, the bracket is fixed to the valve body, the lever is rotatably connected to the bracket through a pin shaft, a torsion spring is arranged on the pin shaft, one end of the lever extends to the moving iron core and is located between the valve closing member and the valve opening member, and the other end extends to the valve port and is arranged with a valve plug;

[0011] When the moving iron core pops out of the valve body, the valve closing member moves one end of the lever until the valve plug at the other end of the lever closes the valve port;

[0012] When the moving iron core is sucked into the valve body, the valve opening member moves one end of the lever, causing the valve plug at the other end of the lever to separate from the valve port, and the torsion spring causes the valve plug at the other end of the lever to move away from the valve port.

[0013] Furthermore, a U-shaped notch is provided at one end of the lever, and the moving iron core passes through the U-shaped notch. The valve opening member and the valve closing member are both annular plates protruding outward along the circumference of the moving iron core.

[0014] Furthermore, a mounting hole is provided at the other end of the lever, and the valve plug includes a plug portion, a shaft portion and a limit portion, the plug portion is used to close the valve port, the plug portion and the limit portion are respectively located on both sides of the axial direction of the mounting hole, and the shaft portion passes through the mounting hole and its two ends are respectively integrally formed with the plug portion and the limit portion.

[0015] The utility model has the advantages that, through the lever-type design and the torsion spring, the force of closing the valve plug or moving it away from the valve port is increased, thereby avoiding the situation where the valve cannot be opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the valve body moving iron core in the background technology that goes straight up and down;

[0017] Figure 2 Schematic diagram of the structure of the valve body in the embodiment, in which the moving iron core is fully ejected, and the valve closing member pushes the lever to rotate, so that the valve plug closes the valve port;

[0018] Figure 3 for Figure 2 Schematic diagram of the bottom plane;

[0019] Figure 4 A schematic diagram of the three-dimensional structure of the lever portion in the embodiment;

[0020] Figure 5 A schematic diagram of the three-dimensional structure of the lever portion in another perspective in the embodiment;

[0021] Figure 6 A schematic diagram of the structure of the moving iron core in the embodiment;

[0022] Figure 7 The schematic diagram of the structure of the valve body in the embodiment, in which the moving iron core is fully retracted. It can be seen from the enlarged diagram that when the moving iron core is retracted, the valve opening member moves one end of the lever to cause the valve plug to leave the valve port;

[0023] Figure 8 For Figure 7 In the state, after the valve plug is separated from the valve port, the torsion spring rotates the lever and the valve plug moves away from the valve port.

[0024] Description of symbols

[0025] 1. Valve port; 2. Moving iron core; 201. Valve closing member; 202. Valve opening member; 3. Electromagnetic drive part; 4. Bracket; 5. Lever; 501. U-shaped notch; 502. Mounting hole; 6. Torsion spring; 7. Pin shaft; 8. Valve plug; 801. Plug part; 802. Shaft part; 803. Limit part. Detailed implementation mode

[0026] The following further describes the present invention in detail in combination with embodiments. It should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. in the text are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, 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 utility model.

[0027] This embodiment provides a lever-type cut-off valve, as Figures 2 to 8 shown, which includes a valve body. The left side of the valve body is an electromagnetic part, and the right side is a valve port 1. The electromagnetic part includes a moving iron core 2 and an electromagnetic drive part 3 for driving the moving iron core 2 to move straight up and down. As Figure 2 shown, the electromagnetic drive part 3 has the same structure as the existing one, including components such as a static iron core, a coil assembly, a return spring, a sleeve, etc. By energizing and de-energizing, under the action of magnetic force and the return spring, the moving iron core 2 can pop out of the valve body downward or retract into the valve body upward. As an improvement, as Figure 6 shown, at the end of the moving iron core 2 exposed from the valve body in this embodiment, a valve closing member 201 and a valve opening member 202 are provided. The valve closing member 201 is located above the valve opening member 202, and there is a certain distance between the two. This distance is determined according to the size of the lever, the size of the torsion spring, and the size of the valve port in the following text.

[0028] As an improvement, the valve body of this embodiment further includes a lever part, as Figure 4 and Figure 5 shown. The lever part includes a lever 5 and a "U"-shaped bracket 4. The bottom surface of the bracket 4 is fixed to the valve body by welding or other forms. The lever 5 is rotatably connected to the two ears of the bracket 4 through a pin shaft 7, and a torsion spring 6 is provided on the pin shaft 7. One end of the lever 5 extends to the moving iron core 2 and is located between the valve closing member 201 and the valve opening member 202, and the other end extends to the valve port 1 and is provided with a valve plug 8.

[0029] When closing the valve, as Figure 1 shown, the moving iron core 2 is popped out of the valve body downward. During the downward movement of the moving iron core 2, the valve closing member 201拨动 the lever 5 at one end, causing the lever 5 to rotate counterclockwise. The valve plug 8 at the other end of the lever 5 moves toward the valve port 1 side until the valve port 1 is closed.

[0030] When opening the valve, as Figure 7 As shown, the moving iron core 2 is sucked into the valve body, and the valve opening member 202 moves upward, impacting and pushing one end of the lever 5 upward. Since the moving iron core 2 is attracted very quickly, the impact and pushing force are already very large, and with the support of the lever 5, even if the rubber valve plug 8 is adhered to the valve port 1, the valve plug 8 can also be separated from the valve port 1. Figure 8 As shown, after the valve plug 8 is separated from the valve port 1, the moving iron core 2 has reached the highest position, and then the lever 5 continues to rotate clockwise under the action of the torsion spring 6, so that the valve plug 8 is away from the valve port 1 until one end of the lever 5 contacts the upper valve closing member 201, and the valve port 1 is fully opened.

[0031] As a preference, Figure 5 As shown, a U-shaped notch 501 is provided at one end of the lever 5 , and the moving iron core 2 passes through the U-shaped notch 501 . The valve opening member 202 and the valve closing member 201 are both annular plates protruding outward along the circumference of the moving iron core 2 .

[0032] As a preference, Figure 7 As shown, a mounting hole 502 is provided at the other end of the lever 5, and the valve plug 8 includes a plug portion 801, a shaft portion 802 and a limiting portion 803. The plug portion 801 is used to close the valve port 1, and the plug portion 801 and the limiting portion 803 are respectively located on both sides of the axial direction of the mounting hole 502. The shaft portion 802 passes through the mounting hole 502 and its two ends are respectively integrally formed with the plug portion 801 and the limiting portion 803, thereby realizing the connection between the valve plug 8 and the lever 5.

[0033] The above embodiments are only used to explain the concept of the present invention, rather than to limit the protection of the rights of the present invention. Any non-substantial changes to the present invention using this concept shall fall within the protection scope of the present invention.

Claims

1. A lever-type cut-off valve, comprising a valve body, characterized in that: The valve body is provided with: The electromagnetic part includes a moving iron core and an electromagnetic driving part for driving the moving iron core to move axially, and the end of the moving iron core exposed from the valve body is provided with a valve closing member and a valve opening member; A valve port is arranged on a side adjacent to the moving iron core; The lever part includes a bracket and a lever, the bracket is fixed to the valve body, the lever is rotatably connected to the bracket through a pin shaft, a torsion spring is arranged on the pin shaft, one end of the lever extends to the moving iron core and is located between the valve closing member and the valve opening member, and the other end extends to the valve port and is arranged with a valve plug; When the moving iron core pops out of the valve body, the valve closing member moves one end of the lever until the valve plug at the other end of the lever closes the valve port; When the moving iron core is sucked into the valve body, the valve opening member moves one end of the lever, causing the valve plug at the other end of the lever to separate from the valve port, and the torsion spring causes the valve plug at the other end of the lever to move away from the valve port.

2. A lever-type cut-off valve according to claim 1, characterized in that: A U-shaped notch is provided at one end of the lever, and the moving iron core passes through the U-shaped notch. Both the valve opening member and the valve closing member are annular plates protruding outward along the circumference of the moving iron core.

3. A lever-type cut-off valve according to claim 1, characterized in that: A mounting hole is provided at the other end of the lever, and the valve plug includes a plug portion, a shaft portion and a limit portion. The plug portion is used to close the valve port, and the plug portion and the limit portion are respectively located on both sides of the axial direction of the mounting hole. The shaft portion passes through the mounting hole and its two ends are respectively integrally formed with the plug portion and the limit portion.

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