Fast response switch valve

Abstract

The utility model discloses a quick response switch valve which comprises a shell and a valve sleeve, a rear yoke, an armature and a coil assembly are installed in the shell, a movable cavity is formed in the shell, a spring is arranged in the movable cavity, a valve plug is fixedly connected to the armature, a liquid inlet chamber, a liquid outlet chamber and a movable chamber are sequentially arranged in the valve sleeve, and liquid outlets are formed in the periphery of the valve sleeve. The liquid outlet chamber and the liquid inlet chamber are communicated through a communication port, an annular blocking face is arranged on the periphery of the communication port, an oil passing cavity is formed in the valve plug, an oil passing port is formed in the valve plug, a communication hole is formed in one side of the valve plug, a plurality of side planes are arranged on the periphery of the armature, and oil passing gaps are formed between the side planes and the inner wall of the movable cavity. The side plane is arranged on the periphery of the armature, so that a large-flux oil passing gap is formed between the side plane and the inner wall of the movable cavity, oil can better enter the movable cavity, the pressure difference between the two ends of the valve plug is reduced, the movement of the valve plug is not affected by the pressure difference between the two ends, and rapid response of the switching valve is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of switch valves, and in particular relates to a fast-response switch valve. Background Art

[0002] The switch valve is controlled by an electrical signal to connect or close the oil circuit. The switch valve is equipped with conventional components such as the back yoke, armature, coil assembly, valve plug, and valve sleeve. When controlling the oil circuit, the oil in the oil circuit has a certain pressure, and the oil can easily enter the switch valve through the gap between the valve plug and the valve sleeve. At this time, even if the oil can be prevented from contacting the coil assembly inside the switch valve by designing a sealing ring, a pressure difference is likely to occur at both ends of the valve plug. Especially when the switch valve needs to achieve a fast response, the pressure difference at both ends of the high-speed moving valve plug is significant, which will form resistance to the movement of the valve plug, thereby affecting the response speed of the switch valve. Utility Model Content

[0003] In order to solve the above technical problems, the technical solution adopted by the utility model is: a fast response switch valve, including a shell and a valve sleeve, a back yoke, an armature and a coil assembly are installed in the shell, an active chamber for the armature to move is provided in the shell, a spring is provided in the active chamber, and the spring is clamped between the back yoke and the armature, a valve plug is fixedly connected to the armature, a liquid inlet chamber, a liquid outlet chamber and an active chamber are sequentially provided inside the valve sleeve, one end of the valve sleeve is fixedly connected to the shell, and the other end is provided with a liquid inlet connected to the liquid inlet chamber, a liquid outlet connected to the liquid outlet chamber is provided around the valve sleeve, one end of the valve plug passes through the active chamber and extends into the liquid outlet chamber, the liquid outlet chamber and the liquid inlet chamber are connected through the connecting port, and an annular sealing surface is provided around the connecting port, an oil passage chamber is provided inside the valve plug, an oil passage port connected to the oil passage chamber is provided on one end of the valve plug close to the connecting port, a connecting hole is provided on one side of the valve plug, and the oil passage chamber is connected to the active chamber through the connecting hole, and a plurality of side planes are provided around the armature, and an oil passage gap is formed between the side plane and the inner wall of the active chamber.

[0004] As a preferred embodiment of the above technical solution, a magnetic isolation sleeve is provided in the outer shell, one end of the magnetic isolation sleeve is sleeved on the rear yoke iron, one end of the valve sleeve extends into the outer shell and is provided with a fixed groove connected to the active chamber, the other end of the magnetic isolation sleeve extends into the fixed groove, and an active cavity for the armature to move is formed inside the magnetic isolation sleeve, and an oil gap is formed between the side plane and the magnetic isolation sleeve.

[0005] As a preferred embodiment of the above technical solution, a first sealing ring is provided between the magnetic isolation sleeve and the valve sleeve, and a second sealing ring is provided between the magnetic isolation sleeve and the rear yoke iron.

[0006] As a preferred embodiment of the above technical solution, a third sealing ring is provided on the valve sleeve, and the third sealing ring is located between the liquid inlet and the liquid outlet.

[0007] As a preferred embodiment of the above technical solution, the valve sleeve is connected to a valve cover, the valve cover is provided with a cover opening, and a filter screen is installed in the cover opening.

[0008] The beneficial effects of the utility model are as follows: the fast-response switch valve of the utility model, by arranging side planes around the armature, forms a large-flux oil-passing gap between the side planes and the inner wall of the active chamber, so that the oil can better enter the active chamber, thereby reducing the pressure difference at both ends of the valve plug, and the movement of the valve plug will not be affected by the pressure difference at both ends, thereby realizing the rapid response of the switch valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model;

[0010] Figure 2 It is a structural diagram of the armature. DETAILED DESCRIPTION

[0011] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0012] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0013] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0014] like Figure 1-2As shown, the fast response switch valve comprises a shell 1 and a valve sleeve 2. A back yoke 3, an armature 4 and a coil assembly 5 are installed in the shell 1. An active chamber 6 for the armature 4 to move is provided in the shell 1. A spring 7 is provided in the active chamber 6. The spring 7 is clamped between the back yoke 3 and the armature 4. A valve plug 8 is fixedly connected to the armature 4. A liquid inlet chamber 9, a liquid outlet chamber 10 and an active chamber 11 are sequentially provided inside the valve sleeve 2. One end of the valve sleeve 2 is fixedly connected to the shell 1, and the other end is provided with a liquid inlet 12 connected to the liquid inlet chamber 9. The valve sleeve 2 is provided with a liquid outlet 10 connected to the liquid outlet chamber 10 around the periphery. 3. One end of the valve plug 8 passes through the active chamber 11 and then extends into the liquid outlet chamber 10. The liquid outlet chamber 10 and the liquid inlet chamber 9 are connected through the connecting port 14. The connecting port 14 is provided with an annular sealing surface 15 around. The valve plug 8 is provided with an oil passage chamber 16 inside. One end of the valve plug 8 near the connecting port 14 is provided with an oil passage port 17 connected to the oil passage chamber 16. A connecting hole 18 is provided on one side of the valve plug 8. The oil passage chamber 16 is connected to the active chamber 6 through the connecting hole 18. The armature 4 is provided with a plurality of side planes 19 around, and an oil passage gap 20 is formed between the side planes 19 and the inner wall of the active chamber 6. When the coil assembly 5 is not energized, the spring 7 presses against the armature 4, so that the valve plug 8 is tightly attached to the annular sealing surface 15, so that the liquid inlet chamber 9 and the liquid outlet chamber 10 are disconnected, and the oil circuit is in a disconnected state. At this time, the oil at the liquid inlet chamber 9 enters the oil passage chamber 16 through the oil passage port 17, and then enters the active chamber 6. In this way, the oil pressure at both ends of the valve plug 8 is the same, and there will be no obvious pressure difference. When the coil assembly 5 is energized, the rear yoke 3 generates magnetism and attracts the armature 4. The armature 4 overcomes the elastic force of the spring 7 and moves toward the rear yoke 3, driving the valve plug 8 to move. Since the oil gap 20 can provide a large flux of oil to flow, there will not be too large a pressure difference at both ends of the fast-moving valve plug 8, and the movement of the valve plug 8 is less affected by the pressure difference, thereby improving the response speed of the switch valve. At this time, the valve plug 8 leaves the annular sealing surface 15, and the liquid outlet chamber 10 and the liquid inlet chamber 9 are connected through the connecting port 14. After the oil enters the liquid outlet chamber 10, it flows out from the liquid outlet 13 to achieve oil circuit conduction.

[0015] Furthermore, a magnetic isolation sleeve 21 is provided in the housing 1, one end of the magnetic isolation sleeve 21 is sleeved on the rear yoke 3, one end of the valve sleeve 2 extends into the housing 1 and is provided with a fixed groove 22 connected to the active chamber 11, the other end of the magnetic isolation sleeve 21 extends into the fixed groove 22, and an active cavity 6 for the armature 4 to move is formed inside the magnetic isolation sleeve 21, and an oil-passing gap 20 is formed between the side plane 19 and the magnetic isolation sleeve 21. The magnetic isolation sleeve 21 has a magnetic isolation effect, prevents the armature 4 from being magnetized, and improves the stability of the response speed of the switch valve.

[0016] Furthermore, a first sealing ring 23 is provided between the magnetic isolation sleeve 21 and the valve sleeve 2, and a second sealing ring 24 is provided between the magnetic isolation sleeve 21 and the back yoke 3. The first sealing ring 23 and the second sealing ring 24 improve the sealing performance inside the switch valve to prevent oil leakage from the housing 1.

[0017] Furthermore, a third sealing ring 25 is provided on the valve sleeve 2 , and the third sealing ring 25 is located between the liquid inlet 12 and the liquid outlet 13 .

[0018] Furthermore, the valve sleeve 2 is connected to a valve cover 26, and a cover is provided on the valve cover 26, and a filter 27 is installed in the cover. The filter 27 is used to filter particulate matter in the oil to prevent the oil path from being blocked. At the same time, it can also prevent particles from entering the switch valve, prevent particulate matter from affecting the movement of the valve plug 8, and ensure the rapid response performance of the switch valve.

[0019] It is worth mentioning that the technical features such as the coil assembly involved in this utility model patent application should be regarded as the prior art. The specific structure, working principle and possible control method and spatial arrangement method of these technical features can be selected by conventional methods in the field and should not be regarded as the invention point of this utility model patent. This utility model patent will not be further elaborated.

[0020] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the utility model on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A fast response switch valve, comprising a housing and a valve sleeve, wherein a back yoke, an armature and a coil assembly are installed in the housing, wherein a movable chamber for the armature to move is provided in the housing, wherein a spring is provided in the movable chamber, and the spring is clamped between the back yoke and the armature, wherein a valve plug is fixedly connected to the armature, and wherein the ... The valve sleeve is provided with a liquid inlet chamber, a liquid outlet chamber and a movable chamber in sequence. One end of the valve sleeve is fixedly connected to the outer shell, and the other end is provided with a liquid inlet connected to the liquid inlet chamber. The valve sleeve is provided with a liquid outlet connected to the liquid outlet chamber around it. One end of the valve plug passes through the movable chamber and extends into the liquid outlet chamber. The liquid outlet chamber and the liquid inlet chamber are connected through the connecting port. An annular sealing surface is provided around the connecting port. An oil passage chamber is provided inside the valve plug. An oil passage port connected to the oil passage chamber is provided on one end of the valve plug close to the connecting port. A connecting hole is provided on one side of the valve plug. The oil passage chamber is connected to the movable chamber through the connecting hole. A plurality of side planes are provided around the armature, and an oil passage gap is formed between the side planes and the inner wall of the movable chamber.

2. The fast response switch valve according to claim 1, characterized in that: A magnetic isolation sleeve is provided in the outer shell, one end of which is sleeved on the rear yoke iron, one end of the valve sleeve extends into the outer shell and is provided with a fixed groove connected to the active chamber, the other end of the magnetic isolation sleeve extends into the fixed groove, an active cavity for the armature to move is formed inside the magnetic isolation sleeve, and an oil gap is formed between the side plane and the magnetic isolation sleeve.

3. The fast response switch valve according to claim 2, characterized in that: A first sealing ring is provided between the magnetic isolation sleeve and the valve sleeve, and a second sealing ring is provided between the magnetic isolation sleeve and the rear yoke iron.

4. The fast response switch valve according to claim 1, characterized in that: The valve sleeve is provided with a third sealing ring, and the third sealing ring is located between the liquid inlet and the liquid outlet.

5. The fast response switch valve according to claim 4, characterized in that: The valve sleeve is connected with a valve cover, the valve cover is provided with a cover opening, and a filter screen is installed in the cover opening.

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