CN205689872U - A kind of valve rod rackwork being applied to electromagnetic valve and a kind of electromagnetic valve - Google Patents

Abstract

The utility model relates to a valve rod position adjustment device applied to an electromagnetic valve, comprising an electromagnetic drive mechanism and a valve rod, the electromagnetic drive mechanism drives the valve rod to expand and contract in the axial direction, and also includes an adjustment seat fixedly matched with the electromagnetic drive mechanism, the adjustment seat There is an adjustment hole for the valve stem to expand and contract. The adjustment seat is provided with an adjustment rod and a mounting hole for rotation with the adjustment rod along the radial direction of the valve stem. One end of the adjustment rod is located in the adjustment hole as the matching end, and the other end is located outside the adjustment seat. The operating end for manual rotation is equipped with an adjusting block eccentrically on the matching end face, and the valve stem is provided with a matching part that is matched with the adjusting block along the circumference. Combined with the pilot valve body. Adopting the above solution, the utility model provides a valve rod position adjustment device and a solenoid valve which can be manually operated or electrically controlled, and are applied to the solenoid valve.

Description

A valve stem position adjustment device applied to a solenoid valve and a solenoid valve

technical field

The utility model specifically relates to a valve stem position adjustment device applied to an electromagnetic valve, and also relates to an electromagnetic valve using the valve stem position adjustment device.

Background technique

Solenoid valve is an industrial equipment controlled by electromagnetic. It is an automatic basic component used to control fluid. It belongs to actuator and is not limited to hydraulic and pneumatic. It is used to adjust the direction, flow, speed and other parameters of the medium in the industrial control system. Solenoid valves can cooperate with different circuits to achieve the expected control, and the control accuracy and flexibility can be guaranteed. There are many kinds of solenoid valves. Different solenoid valves play a role in different positions of the control system. The most commonly used ones are check valves, safety valves, directional control valves, and speed regulating valves.

However, in daily use, due to power failure or line failure, the solenoid valve cannot be opened normally, especially in some places where the solenoid valve operates frequently, the stop of the solenoid valve will bring a lot of inconvenience to life.

Contents of the invention

In view of the deficiencies in the prior art, the purpose of the utility model is to provide a valve stem position adjustment device applied to a solenoid valve that can be manually operated or electrically controlled.

In order to achieve the above purpose, the utility model provides the following technical solution: including an electromagnetic drive mechanism and a valve stem, the electromagnetic drive mechanism drives the valve stem to expand and contract in the axial direction, and is characterized in that: it also includes an adjustment mechanism that is fixedly matched with the electromagnetic drive mechanism Seat, the adjustment seat is provided with an adjustment hole for the expansion and contraction of the valve stem, and the adjustment seat is provided with an adjustment rod and a mounting hole for rotating with the adjustment rod along the radial direction of the valve stem, and one end of the adjustment rod is used as a matching One end is located in the adjustment hole, and the other end is located outside the adjustment seat as the operating end for manual rotation. An adjustment block is eccentrically arranged on the end surface of the matching end, and a matching fitting with the adjustment block is arranged along the circumference of the valve stem. department.

By adopting the above technical scheme, during manual operation, the adjusting rod is manually rotated, and the adjusting block arranged eccentrically with the adjusting rod moves axially along the valve rod, pushing the mating part that is mated with it to move, that is, adjusting the axial position of the valve rod, thereby The valve body is opened or cut off. In the event of a power failure or line failure, the solenoid valve can be manually operated to avoid the inconvenience caused by the inability to use it in an emergency. The adjustment seat can be integrated with the valve body or can be integrated with the valve body The separate setting of the valve body is determined according to the demand.

The utility model is further configured as follows: a shift block is arranged on the outer peripheral surface of the operating end.

By adopting the above technical solution, since the adjustment shaft is in the shape of a cylinder, adding a shift block is convenient for the user to apply force.

The utility model is further configured as follows: the adjustment seat is located on the moving track of the shifting block, and is fixedly provided with a limit block that matches with the shifting block.

By adopting the above technical solution, the limit block limits the rotation range of the dial block, and prevents the dial block from continuing to rotate after the rotation is in place. On the one hand, it gives the user resistance feedback and informs the user that the valve body is in an open or cut-off state. On the other hand, it avoids excessive Apply force to cause damage to the electromagnetic drive mechanism.

The utility model is further configured as follows: the outer peripheral surface of the adjusting rod is provided with limiting grooves along the circumference, and the installation holes are respectively provided with limiting pins located in the limiting grooves on both sides of the adjusting rod.

By adopting the above technical solution, the limit groove and the limit pin cooperate to avoid detaching from the adjustment seat on the premise of ensuring the free rotation of the adjustment rod.

The utility model is further configured as follows: the electromagnetic driving mechanism includes a reset spring for restoring the valve stem in a direction away from the electromagnetic driving mechanism, and the matching part is located between the restoring spring and the regulating block.

By adopting the above technical solution, the return spring is an existing part and is arranged in the electromagnetic drive mechanism, and the matching part is placed between the return spring and the adjustment block, so that the linkage with the adjustment block is more stable.

The utility model is further set as: the outer peripheral surface of the adjusting rod is provided with a sealing ring and a sealing ring installation groove for installing the sealing ring along the circumferential direction, and the sealing ring is compressed between the installation hole and the adjusting rod to form a movable sealing fit between the two .

By adopting the above technical solution, the sealing ring prevents the flow medium from leaking from between the adjusting seat and the adjusting rod.

The utility model also provides a solenoid valve adopting the above-mentioned valve rod position adjustment device, and provides the following technical proposal: it also includes a valve body, the adjustment seat is fixed between the electromagnetic drive mechanism and the valve body, and the valve body A flow channel is provided, and the flow channel is provided with an inlet port and an outlet port. The flow channel is located between the inlet port and the outlet port, and a sealing port and a diaphragm sealingly matched with the sealing port are provided. The flow channel There is also an adjustment chamber connected to the adjustment hole between the inlet and the outlet. The adjustment chamber is divided into an upper chamber and a lower chamber by a diaphragm. Pushing the driving spring, the valve body and the adjustment seat are provided with a pilot channel that communicates the adjustment hole with the outlet, and the connection between the upper chamber and the adjustment hole is provided with a valve rod that is sealed with the end of the valve stem. flow hole.

By adopting the above technical scheme, the valve body adopts the pilot valve body, the valve stem is sealed or separated from the flow hole, and the position of the diaphragm is adjusted by water pressure, thereby forming the linkage between the valve stem and the diaphragm. Of course, a straight-through valve body can also be used. The mode and structure of manual adjustment are consistent.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a perspective view of a valve stem position adjustment device in a specific embodiment of the present invention;

Fig. 2 is a schematic structural view of the valve stem position adjustment device in the specific embodiment of the present invention;

Fig. 3 is a perspective view of the adjusting rod of the valve rod position adjusting device in the specific embodiment of the present invention;

Fig. 4 is the perspective view of the solenoid valve in the specific embodiment of the present invention;

Fig. 5 is the top view of the solenoid valve in the specific embodiment of the utility model;

FIG. 6 is a sectional view taken along line A of FIG. 5 .

detailed description

As shown in Figures 1-3, the utility model discloses a valve stem position adjustment device applied to solenoid valves, which includes an electromagnetic drive mechanism 1 and a valve stem 2. The electromagnetic drive mechanism 1 drives the valve stem 2 to expand and contract in the axial direction, and also Including the adjustment seat 3 fixedly matched with the electromagnetic drive mechanism 1, the adjustment seat 3 is provided with an adjustment hole 31 for the expansion and contraction of the valve stem 2, and the adjustment seat 3 is provided with an adjustment rod 4 along the radial direction of the valve stem 2 and rotates with the adjustment rod 4 One end of the adjusting rod 4 is located in the adjusting hole 31 as the matching end 41, and the other end is located outside the adjusting seat 3 as the operating end 42 for manual rotation. An adjusting block 411 is eccentrically arranged on the end surface of the matching end 41, and the valve stem 2 A matching part 21 is provided along the circumferential direction to match with the adjustment block 411. During manual operation, the adjustment rod 4 is manually rotated, and the adjustment block 411, which is eccentrically arranged with the adjustment rod 4, moves axially along the valve stem 2, pushing the The matching part 21 moves, that is, adjusts the axial position of the valve stem 2, so that the valve body is opened or cut off. In the event of a power failure or line failure, the solenoid valve can be manually operated to avoid unexpected situations caused by unavailability. Many inconveniences, the adjustment seat 3 can be set integrally with the valve body, and can also be set separately from the valve body, depending on demand.

A shifting block 421 is disposed on the outer peripheral surface of the operating end 42 . Since the adjustment shaft is cylindrical, adding a shifting block 421 is convenient for the user to apply force.

The adjustment seat 3 is located on the moving track of the dial block 421, and is fixedly provided with a limit block 33 that is mated with the dial block 421. The limit block 33 limits the rotation range of the dial block, and prevents the dial block from continuing to rotate after the rotation is in place. On the one hand, it gives the user The resistance feedback informs the user that the valve body is in an open or cut-off state, and on the other hand, avoids damage to the electromagnetic drive mechanism 1 caused by excessive force.

The outer peripheral surface of the adjusting rod 4 is provided with a limit groove 43 along the circumferential direction, and the mounting hole 32 is located on both sides of the adjusting rod 4 and is respectively provided with a limit pin 44 located in the limit groove 43, and the limit groove 43 cooperates with the limit pin 44 to ensure Under the premise of free rotation of the adjusting rod 4, avoid breaking away from the adjusting seat 3.

The electromagnetic drive mechanism 1 includes a guide sleeve 13 that guides the movement of the valve stem 2. The guide sleeve 13 is provided with a return spring 11 that resets the valve stem 2 in a direction away from the electromagnetic drive mechanism 1. The matching portion 21 is located between the return spring 11 and the adjustment block 411. Between them, the return spring 11 is an existing component and is arranged in the electromagnetic drive mechanism 1, and the matching part 21 is placed on the return spring 11 and the adjustment block 411 to make the linkage with the adjustment block 411 more stable. The electromagnetic drive mechanism 1 also includes Money is more than the electromagnet 12 that the valve stem 2 moves axially towards the direction close to the electromagnetic drive mechanism 1 .

The outer peripheral surface of the adjusting rod 4 is provided with a sealing ring 45 and a sealing ring installation groove 46 for installing the sealing ring 45 along the circumferential direction. The sealing ring 45 is compressed between the mounting hole 32 and the adjusting rod 4 to form a movable sealing fit between the two. 45 prevents the flow medium from leaking between the adjustment seat 3 and the adjustment rod 4 .

As shown in Figures 4-6, the utility model also provides a solenoid valve adopting the above-mentioned valve stem position adjustment device, which also includes a valve body 5, and the adjustment seat 3 is fixed between the electromagnetic drive mechanism 1 and the valve body 5, and the valve body 5 is provided with a flow channel 51, the flow channel 51 is provided with an inlet port 511 and an outlet port 512, and the flow channel 51 is located between the inlet port 511 and the outlet port 512 and is provided with a sealing port 513 and a sealing port 513 Diaphragm 6 with sealing fit, when the diaphragm 6 closes the sealing port 513, the valve body 5 is in a cut-off state, when the diaphragm 6 is away from the sealing port 513, the valve body 5 is in an open state, and the flow channel 51 is located at the inlet port 511 and the outlet port 512 An adjustment chamber 52 communicating with the adjustment hole 31 is also provided between them. The adjustment chamber 52 is divided into an upper chamber 521 and a lower chamber 522 by the diaphragm 6. The inner pressure of the upper chamber 521 is provided with a driving force for pushing the diaphragm 6 to the lower chamber. Spring 523, between the valve body 5 and the adjustment seat 3, there is a pilot channel 53 that connects the adjustment hole 31 with the outlet 512, and the connection between the upper cavity 521 and the adjustment hole 31 is provided with a valve that is sealed with the end of the valve stem 2. The flow hole 34, the valve body 5 adopts the pilot valve body 5, the valve stem 2 is sealed or separated from the flow hole 34, and the position of the diaphragm 6 is adjusted by water pressure, thereby forming the linkage between the valve stem 2 and the diaphragm 6. Of course, it can also be used The straight-through valve body 5 has the same manual adjustment mode and structure.

Claims (7)

1. A valve stem position adjustment device applied to an electromagnetic valve, comprising an electromagnetic drive mechanism and a valve stem, the electromagnetic drive mechanism drives the valve stem to expand and contract in the axial direction, and is characterized in that: it also includes an electromagnetic drive mechanism that is fixedly matched with the electromagnetic drive mechanism An adjustment seat, the adjustment seat is provided with an adjustment hole for the valve stem to expand and contract, and the adjustment seat is provided with an adjustment rod and a mounting hole for rotating with the adjustment rod along the radial direction of the valve stem. One end of the adjustment rod is used as The matching end is located in the adjusting hole, and the other end is located outside the adjusting seat as an operating end for manual rotation. An adjusting block is eccentrically arranged on the end surface of the matching end, and the valve stem is provided with an abutment with the adjusting block along the circumferential direction. Cooperate with the Ministry. 2 . The valve stem adjusting device applied to a solenoid valve according to claim 1 , wherein a shift block is arranged on the outer peripheral surface of the operating end. 3 . 3 . The valve stem position adjustment device applied to solenoid valves according to claim 2 , wherein the adjustment seat is located on the moving track of the shift block and is fixedly provided with a limit block that abuts against the shift block. 4 . 4. The valve stem position adjustment device applied to solenoid valves according to claim 1, characterized in that: the outer peripheral surface of the adjustment rod is provided with limiting grooves along the circumference, and the installation holes are located on both sides of the adjustment rod, respectively. A limit pin located in the limit slot is provided. 5. The valve stem position adjustment device applied to electromagnetic valves according to claim 1, characterized in that: the electromagnetic drive mechanism includes a return spring for resetting the valve stem in a direction away from the electromagnetic drive mechanism, and the matching The part is between the return spring and the adjusting block. 6. The valve stem position adjustment device applied to solenoid valves according to claim 1, characterized in that: the outer peripheral surface of the adjustment rod is provided with a sealing ring and a sealing ring installation groove for installing the sealing ring along the circumferential direction, the sealing ring The ring is compressed between the mounting hole and the adjusting rod to form a movable sealing fit between the two. 7. The solenoid valve adopting the valve stem adjusting device of the solenoid valve according to claim 1 or 2 or 3 or 4 or 5 or 6, is characterized in that: it also includes a valve body, and the adjusting seat is fixed on the electromagnetic driving mechanism Between the valve body and the valve body, a flow channel is provided in the valve body, the flow channel is provided with an inlet port and an outlet port, the flow channel is located between the inlet port and the outlet port, and a sealing port and a sealing port Sealed diaphragm, the flow channel is located between the inlet port and the outlet port, and an adjustment chamber connected with the adjustment hole is also provided. The adjustment chamber is divided into an upper chamber and a lower chamber by the diaphragm. The upper chamber The internal pressure of the chamber is provided with a driving spring that pushes the diaphragm to the lower chamber, and a pilot channel is provided between the valve body and the regulating seat to communicate the regulating hole with the outlet, and the communication between the upper chamber and the regulating hole There is a flow hole sealingly fitted with the end of the stem.