Electromagnetic valve capable of being manually operated

Abstract

The solenoid valve comprises a valve seat and a valve element, a valve element mounting hole used for containing the valve element is formed in the valve seat, and the valve element can move in the valve element mounting hole in the axial direction; electromagnets are arranged on one side or two sides of the axial direction of the valve core; a connecting part is arranged between the electromagnet and the valve element, an operating part capable of being manually moved is connected to the connecting part, the connecting part and the valve element are mutually locked in the axial direction, and when the electromagnet is in a conductive state, the valve element is driven by the electromagnet to move in the axial direction; when the electromagnet is in a power-off state, the valve element is driven through the operating part and the connecting part, the valve element is driven to act, an additional structure does not need to be installed on the valve seat, the overall structure is simple, and installation is convenient; moreover, when the electromagnet is powered off or breaks down, the position of the valve element in the valve seat is controlled through the action part, various on-off states of the electromagnetic valve can be achieved, and when the electromagnet cannot be used, the valve seat and the valve element can still work normally based on a manual operation mechanism.

Description

Technical Field

[0001] The invention relates to the field of solenoid valves, in particular to a manually operable solenoid valve. Background Art

[0002] Solenoid valve is a common control component, which is widely used in various fluid control fields to control the on and off of fluid. Common solenoid valves realize the on and off of the solenoid valve by the on and off of the current in the solenoid coil. However, when there is a power outage or a fault in the solenoid valve power supply circuit, the on and off of the valve body can no longer be controlled, that is, the on and off of the fluid cannot be controlled, resulting in the solenoid valve being unable to work.

[0003] Therefore, it is necessary to set a manual emergency mechanism on the solenoid valve, but the existing manual emergency mechanisms are all set in the valve seat, which makes the valve seat structure complicated and generally can only achieve emergency closure of the oil circuit when the electromagnet loses power, and cannot further adjust the movement of the valve core. The manual emergency mechanism is less convenient to use. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a manually operable solenoid valve, comprising: A valve seat and a valve core, wherein the valve seat is provided with a valve core mounting hole for accommodating the valve core, and the valve core is movable axially in the valve core mounting hole; An electromagnet, the electromagnet is located on one or both sides of the axial direction of the valve core, the electromagnet has a conductive state and a power-off state, when the electromagnet is in the conductive state, the electromagnet applies a moving force to the valve core, the moving force is parallel to the moving direction of the valve core, when the electromagnet is in the power-off state, the moving force disappears; A connecting portion, the connecting portion is arranged between the electromagnet and the valve core, and the connecting portion and the valve core are locked with each other in the axial direction; and an operating portion, the operating portion being connected to the connecting portion and capable of manual operation; Wherein, by controlling the manual movement of the operating part and the connecting part, the valve core can be controlled to reciprocate relative to the valve seat in the axial direction to switch the on-off state of different paths on the valve seat.

[0005] Preferably, the connecting portion is integrally provided with the valve core, and the connecting portion is formed by the valve core extending axially toward the electromagnet; Or the connecting portion and the valve core are separately arranged, the connecting portion is detachably installed between the electromagnet and the valve core, and the connecting portion and the valve core are locked with each other in the axial direction.

[0006] Preferably, the connecting portion and the valve core are connected by threaded fitting at one end close to each other, or the connecting portion and the valve core are clamped to each other at one end close to each other.

[0007] Preferably, one end of the operating portion is fixedly connected to the connecting portion, and the connecting portion moves along with the operating portion by translating the other end of the operating portion; Or one end of the operating part is hinged to the connecting part, and by rotating the other end of the operating part, the end of the operating part hinged to the connecting part drives the connecting part to swing along the axial direction.

[0008] Preferably, a plurality of scale nodes are arranged on the motion track of the operating part, and when the operating part is operated at different scale nodes, the valve core is at different positions in the valve seat, so that the valve seat is in different on-off states.

[0009] Preferably, it further comprises a locking part, and after the valve core is controlled to move into place by the operating part and the connecting part, the position of the operating part and the connecting part is locked by the locking part.

[0010] Preferably, a return spring is further included, wherein the return spring provides a return force for the valve core to return to the first position. When the valve core is in the first position, each oil path on the valve seat is in a closed state.

[0011] Preferably, it also includes a mounting portion, which is fixedly mounted between the valve seat on a side where the connecting portion is provided and the electromagnet, and a through hole extending axially along the valve core is provided in the mounting portion, and the through hole matches the shape of the connecting portion, and the through hole and the valve core mounting hole on the valve seat for accommodating the valve core are coaxially arranged.

[0012] Preferably, a receiving hole extending along the axial direction of the valve core is provided at the end of the electromagnet close to the valve core, and the receiving hole, the through hole and the valve core mounting hole are coaxially arranged, and the end of the valve core and the connecting part close to the electromagnet both have a shape matching the receiving hole, so that the valve core and the connecting part can reciprocate axially in the receiving hole.

[0013] Preferably, one end of the operating portion is located in the mounting portion and connected to the connecting portion, and the other end of the operating portion is provided with an operating handle.

[0014] By applying the technical solution of the present invention, the electromagnet is arranged on one or both sides of the connecting part along the axial direction, and the connecting part is arranged between the electromagnet and the valve core, the connecting part and the valve core are locked with each other in the axial direction, and when the electromagnet is in a conductive state, the valve core is driven to move in the axial direction by the electromagnet; when the electromagnet is in a power-off state, the valve core is driven by the operating part and the connecting part to drive the movement of the valve core, and there is no need to install an additional structure on the valve seat. The overall structure is simple and easy to install; and when the electromagnet is powered off or fails, the position of the valve core in the valve seat is controlled by the operating part, so that various on-off states of the solenoid valve can be realized, so that when the electromagnet cannot be used, the valve seat and the valve core can still work normally based on the manual operating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the internal structure of a manually operable solenoid valve provided in one embodiment of the present invention; Figure 2 1 is a schematic diagram of the external structure of a manually operable solenoid valve provided in one embodiment of the present invention; Figure 3 Schematic diagram of the internal oil circuit of a valve seat in a manually operable solenoid valve provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of one medium flow path of a valve seat in a manually operable solenoid valve provided by an embodiment of the present invention; Figure 5 is a top view of a manually operable solenoid valve provided in one embodiment of the present invention; in: 1. Valve seat; 11. Valve core mounting hole; 2. Valve core; 3. Connecting part; 4. Operating part; 41. Operating handle; 5. Mounting part; 51. Through hole; 6. Electromagnet; 61. Accommodating hole; 62. Reset spring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Figure 1 It is a schematic diagram of the internal structure of a manually operable solenoid valve provided in one embodiment of the present invention; Figure 2 It is a schematic diagram of the external structure of a manually operable solenoid valve provided in one embodiment of the present invention.

[0018] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a manually operable solenoid valve, including a valve seat 1 and a valve core 2 movably arranged in the valve core mounting hole 11 of the valve seat 1 in the axial direction. A plurality of oil circuits are arranged in the valve seat 1. When the valve core 2 moves axially relative to the valve seat 1, the oil circuits on the valve seat can be controlled to be in different on-off states. An electromagnet 6 is arranged on one or both sides of the valve core 2 in the axial direction. The axial movement of the valve core 2 can be controlled by energizing and de-energizing the electromagnet 6. A connecting portion 3 is also arranged between the electromagnet 6 and the valve core 2. An operating portion 4 that can be moved manually is connected to the connecting portion 3. The connecting portion 3 and the valve core 2 are mutually locked in the axial direction.

[0019] During normal use, the electromagnet 6 drives the connecting part 3 and the valve core 2 to move to switch the different on-off states of the oil circuit on the valve seat 1. When the electromagnet 6 is powered off or other faults occur, the operating part 4 can be manually controlled to control the movement of the connecting part 3, thereby driving the valve core 2 to move, so that the solenoid valve can still work normally. By arranging the connecting part 3 between the valve core 2 and the electromagnet 6, the forces of the electromagnet 6 and the operating part 4 act on the connecting part 3 and further on the valve core 2, so that the relative position of the valve core 2 and the valve seat 1 can be adjusted by the magnetic force of the electromagnet or the manual operation of the operating part 4. The overall structure is simple and manual operation is also quick and convenient.

[0020] In addition, if Figure 1 As shown, in the solenoid valve, since the electromagnet can only exert an attractive force on the valve core 2 but cannot exert a repulsive force, that is, it can only control the valve core 2 to approach the electromagnet but cannot control the valve core 2 to move away from the electromagnet, electromagnets 6 are provided at both ends of the valve core 2 along the axial direction; and through the connecting part 3 and the operating part 4, the reciprocating motion of the valve core 2 in two directions along the axial direction can be controlled. Therefore, when electromagnets are provided at both ends of the valve core 2, the connecting part 3 and the operating part 4 can be provided only between one group of electromagnets and the valve core 2, which can meet the use requirements.

[0021] like Figure 1 As shown, in one preferred embodiment, the valve core 2 and the connecting portion 3 are separately provided, and the connecting portion 3 is detachably installed between the valve core 2 and the electromagnet 6. For example, the connecting portion 3 and the valve core 2 can be connected by threaded matching at one end close to each other, or the connecting portion 3 and the valve core 2 can be mutually clamped at one end close to each other, and when the connecting portion 3 is driven to move by the electromagnet 6 or the operating portion 4, the movement of the valve core 2 can be driven at the same time.

[0022] The valve core 2 and the connecting part 3 can also be arranged as an integral whole, and the connecting part 3 is formed by the valve core 2 extending axially in the direction close to the electromagnet 6, that is, the connecting part 3 is a part of the valve core 2. At this time, the force of the electromagnet 6 or the operating part 4 directly acts on the valve core 2 to drive the movement of the valve core 2.

[0023] Among them, one end of the operating part 4 can be set to be able to slide inside the connecting part 3 to form a slide groove rocker structure, and the other end of the operating part 4 can be rotated to make the operating part 4 swing within a fan-shaped range, thereby driving the connecting part 3 to swing axially; one end of the operating part 4 can also be set to be fixedly connected to the connecting part 3, and the operating part 4 can be controlled to reciprocate along the axial direction of the connecting part 3, thereby driving the connecting part 3 and the valve core 2 to reciprocate along the axial direction.

[0024] In one of the preferred embodiments, a plurality of scale nodes can be set on the motion track of the operating part 4. When the operating part 4 is at different scale nodes during the motion process, the valve core 2 is also at different positions, and the oil circuit in the valve seat 1 is in the corresponding on-off state. For example, a node a and a node b are set on the motion track of the operating part 4. When the operating part 4 is at the node a, the oil circuit in the valve seat 1 is in the connected state a. When the operating part 4 is at the node b, the oil circuit in the valve seat 1 is in the connected state b, so that it is more convenient to switch the on-off state of the oil circuit in the valve seat 1 through the operating part 4.

[0025] Furthermore, a locking part can be provided on the operating part 4. When the operating part 4 controls the movement of the valve core 2 to be in place, the position of the operating part 4 can be locked by the locking part. For example, when the valve seat 1 of the solenoid valve is required to be in the connected state a for use, the operating part 4 is adjusted to the node a, and then the operating part 4 is locked at the node a by the locking part, thereby meeting the use requirements.

[0026] The locking part may include a slide groove and a locking screw installed on the side of the slide groove. One end of the operating part 4 for manual operation is arranged in the slide groove. The operating part 4 slides in the slide groove to control the movement of the connecting part 3 and the valve core 2. When the valve core 2 moves into place, the locking screw is screwed into the slide groove and the operating part 4 is pressed against the slide groove to fix the position of the operating part 4. The locking part may also adopt other structures that can lock the position of the operating part 4, as long as the locking and loosening of the operating part 4 can be achieved. In addition, the locking part may also be used in conjunction with the connecting part 3. By acting on the connecting part 3, the position of the connecting part 3 is locked, and the effect of locking the position of the valve core 2 can also be achieved.

[0027] like Figure 1 As shown, in one preferred embodiment, a reset spring 62 is further included. When the valve core 2 is not subjected to the external force of the electromagnet 6 and the connecting portion 3, the valve core 2 is reset under the action of the reset spring 62. Figure 1In the illustrated embodiment, return springs 62 are provided at the electromagnets 6 on both sides of the valve core 2. The return springs 62 on both sides are respectively connected to the connecting portion 3 and the end of the valve core 2. The forces acting on the valve core 2 are equal in magnitude and opposite in direction. Therefore, when the valve core 2 is not subjected to external forces from the connecting portion 3 and the electromagnet 6, the two return springs 62 drive the valve core 2 to be in the middle position.

[0028] like Figure 1 As shown, in one of the preferred embodiments, it also includes a mounting portion 5, which is mounted between the electromagnet 6 on one side of the connecting portion 3 and the valve seat 1, and a through hole 51 extending axially along the valve core 2 is provided in the mounting portion 5, and the shape of the connecting portion 3 matches the through hole 51; the through hole 51 is coaxially arranged with the valve core mounting hole 11 in the valve seat 1, so that the connecting portion 3 and the valve core 2 are coaxially arranged, and the maximum diameter value of the connecting portion 3 and the valve core 2 is the same, so that the connecting portion 3 can move into the valve core mounting hole 11 and the valve core 2 can move into the through hole 51.

[0029] Further, such as Figure 1 As shown, a receiving hole 61 is provided at one end of the electromagnet 6 close to the valve core 2, and the receiving hole 61 is coaxially arranged with the through hole 51 and the valve core mounting hole 11. The end of the valve core 2 and the connecting part 3 close to the electromagnet has a shape matching the receiving hole 61, so that the ends of the valve core 2 and the connecting part 3 can extend into the receiving hole 61. In addition, a reset spring 62 can also be arranged in the receiving hole 61, and is located between the end of the valve core 2 or the connecting part 3 and the bottom of the receiving hole 61, which can facilitate the installation of the reset spring 62.

[0030] like Figure 1 As shown, in one preferred embodiment, one end of the operating part 4 located inside the mounting part 5 is connected to the connecting part 3, and one end of the operating part 4 located outside the mounting part 5 is connected to an operating handle 41, through which the operating handle 41 can be conveniently operated.

[0031] like Figure 3 and Figure 4 As shown, in one specific embodiment, the oil circuit in the valve seat 1 includes an oil inlet P, an oil outlet A, an oil outlet B and an oil return port T. The operating handle 41 is controlled to rotate the operating portion 4, thereby driving the connecting portion 3 to move axially in a direction away from the valve seat 1, and at the same time driving the valve core 2 to move together. At this time, through the cooperation of the valve core 2 and the valve seat 1, the hydraulic oil entering the oil inlet P can be discharged from the oil outlet A through the oil circuit. In addition, by controlling the operation handle 41 to control the movement of the valve core 2, the oil inlet P can also be controlled to be connected with the oil outlet B, so that the hydraulic oil entering the oil inlet P is discharged from the oil outlet B, or the oil inlet A or the oil inlet B is controlled to be connected with the oil return port T, so that the hydraulic oil refluxed from the oil inlet A or the oil inlet B is discharged to the oil return port T.

[0032] In addition, if Figure 5 As shown, overload valves can be set at the oil outlet A and the oil outlet B of the solenoid valve. That is, if the oil outlet A or B needs overload protection, an overload valve can be added to the A port or the B port accordingly to play the overload protection function. If it is not needed, the overload valve port can be blocked with a plug to improve the safety of the solenoid valve.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that any modification or equivalent replacement of the technical solutions of the present invention does not depart from the spirit and scope of the technical solutions of the present invention and should be included in the scope of the claims of the present invention.

Claims

1. A manually operable solenoid valve, comprising: A valve seat and a valve core, wherein the valve seat is provided with a valve core mounting hole for accommodating the valve core, and the valve core is movable axially in the valve core mounting hole; An electromagnet, the electromagnet is located on one or both sides of the axial direction of the valve core, the electromagnet has a conductive state and a power-off state, when the electromagnet is in the conductive state, the electromagnet applies a moving force to the valve core, the moving force is parallel to the moving direction of the valve core, when the electromagnet is in the power-off state, the moving force disappears; A connecting portion, the connecting portion is arranged between the electromagnet and the valve core, and the connecting portion and the valve core are locked with each other in the axial direction; and an operating portion, the operating portion being connected to the connecting portion and capable of manual operation; Wherein, by controlling the manual movement of the operating part and the connecting part, the valve core can be controlled to reciprocate relative to the valve seat in the axial direction to switch the on-off state of different paths on the valve seat.

2. The manually operable solenoid valve according to claim 1, characterized in that: The connecting portion is integrally provided with the valve core, and the connecting portion is formed by the valve core extending in the axial direction toward the electromagnet; Alternatively, the connecting portion and the valve core are separately provided, and the connecting portion is detachably installed between the electromagnet and the valve core.

3. The manually operable solenoid valve according to claim 2, characterized in that: The connecting portion and the valve core are connected by threaded fit at one end close to each other, or the connecting portion and the valve core are clamped to each other at one end close to each other.

4. The manually operable solenoid valve according to claim 1, characterized in that: One end of the operating part is fixedly connected to the connecting part, and the connecting part moves along with the operating part by translating the other end of the operating part; Or one end of the operating part is hinged to the connecting part, and by rotating the other end of the operating part, the end of the operating part hinged to the connecting part drives the connecting part to swing along the axial direction.

5. The manually operable solenoid valve according to claim 4, characterized in that: A plurality of scale nodes are arranged on the motion track of the operating part. When the operating part is operated at different scale nodes, the valve core is at different positions in the valve seat, so that the valve seat is in different on-off states.

6. The manually operable solenoid valve according to claim 5, characterized in that: It also includes a locking part, which locks the positions of the operating part and the connecting part after the valve core is controlled to move into position through the operating part and the connecting part.

7. The manually operable solenoid valve according to claim 1, characterized in that: It also includes a return spring, which provides a return force for the valve core to return to the first position. When the valve core is in the first position, the oil paths on the valve seat are in a closed state.

8. The manually operable solenoid valve according to claim 1, characterized in that: It also includes a mounting portion, which is fixedly mounted between the valve seat on a side where the connecting portion is provided and the electromagnet, and a through hole extending along the axial direction of the valve core is provided in the mounting portion, and the through hole matches the shape of the connecting portion, and the through hole and the valve core mounting hole on the valve seat for accommodating the valve core are coaxially arranged; the maximum diameter value of the connecting portion is equal to that of the valve core.

9. The manually operable solenoid valve according to claim 8, characterized in that: An accommodating hole extending along the axial direction of the valve core is provided at one end of the electromagnet close to the valve core, and the accommodating hole, the through hole and the valve core mounting hole are coaxially arranged, and the ends of the valve core and the connecting part close to the electromagnet have an appearance matching the accommodating hole, so that the valve core and the connecting part can reciprocate axially in the accommodating hole.

10. The manually operable solenoid valve according to claim 8, characterized in that One end of the operating portion is located in the mounting portion and connected to the connecting portion, and the other end of the operating portion is provided with an operating handle.

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