CN210830595U

CN210830595U - Pilot valve of normally-open and normally-closed shared main body

Info

Publication number: CN210830595U
Application number: CN201921592543.1U
Authority: CN
Inventors: 高展; 王琳
Original assignee: Ningbo Hengbo Electromagnetic Technology Co ltd
Current assignee: Ningbo Hengbo Electromagnetic Technology Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-06-23
Anticipated expiration: 2029-09-23

Abstract

The utility model provides a pilot valve of normally open normal close sharing main part relates to solenoid valve technical field. The pilot valve of normally open normally closed sharing main part includes: the electromagnetic valve comprises an electromagnet mechanism and a valve body, wherein the electromagnet mechanism is arranged above the valve body, and a cavity is arranged between the valve body and the electromagnet mechanism; three working ports are arranged in the valve body, and the three working ports are a port P, a port R and a port A from top to bottom in sequence; the port P is communicated with the cavity through a first valve port; the port R is communicated with the port A through a second valve port; the R port is communicated with the cavity, the R port is communicated with the P port through the first valve port, and the conversion between a normally open state and a normally closed state is realized by replacing different input interfaces without replacing a pilot valve. The normally open and normally closed mode shares one main body, the structure is simple, the effect is good, and the trouble that the pilot valve is frequently disassembled to replace the normally open and normally closed mode is avoided.

Description

Pilot valve of normally-open and normally-closed shared main body

Technical Field

The utility model belongs to the technical field of the solenoid valve, a pilot valve of normally open normally closed sharing main part is related to.

Background

Solenoid valves are electromagnetically controlled industrial devices, which are the basic elements of automation for controlling fluids, used in industrial control systems to regulate the direction, flow, velocity and other parameters of media. The different connecting holes are opened or closed by controlling the movement of the valve rod, and the action of the actuating element is controlled. In the prior art, a pilot valve is usually used to control its working state to be normally open or normally closed, and the working state of the pilot valve is set in advance, that is, the normally open or normally closed state of the pilot valve is fixed. However, in the actual production and use process, the working state of the pilot valve often needs to be adjusted, and therefore, different pilot valves need to be disassembled and assembled, so that inconvenience is brought, the working efficiency is reduced, and the error rate is increased.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a pilot valve of normally open normally closed sharing main part of having integrateed normally open normally closed operating condition in an organic whole.

The purpose of the utility model can be realized by the following technical proposal: a normally open and normally closed common body pilot valve comprising:

the electromagnetic valve comprises an electromagnet mechanism and a valve body, wherein the electromagnet mechanism is arranged above the valve body, and the valve body is connected with the electromagnet mechanism and surrounds the electromagnet mechanism to form a cavity; a first valve port and a second valve port are arranged in the valve body; three working ports are arranged in the valve body, and the three working ports are a port P, a port R and a port A from top to bottom in sequence; the port P is communicated with the cavity through a first valve port; the port R is communicated with the port A through a second valve port; the R port is communicated with the cavity, and the R port is communicated with the P port through the first valve port. The conversion between the normally open state and the normally closed state is realized by replacing different input interfaces.

As a further improvement of the utility model, in a normally open mode, the working medium is injected from the R port; in the normal close mode, working medium is injected from a port P; the pilot valve of the normally open and normally closed shared main body has two working states, namely a first working state: the first valve port is closed, and the second valve port is opened; the second working state: the first port is open and the second port is closed.

As a further improvement of the utility model, the electromagnet mechanism comprises a movable iron core and a static iron core; the movable iron core and the static iron core are coaxially arranged along the vertical direction, the static iron core is fixedly arranged at one end far away from the valve body, the movable iron core is movably arranged at one end close to the valve body, and the movable iron core can move up and down; when the power is on, the movable iron core moves upwards to be close to the static iron core, and when the power is off, the movable iron core moves downwards to be far away from the static iron core.

As the utility model discloses a further improvement moves the inside embedding of iron core and establishes and move the iron core spring and move the iron core sealed pad, moves iron core spring one end and quiet iron core butt, the other end with move the sealed butt that fills up of iron core.

As a further improvement, the movable core spring comprises a first movable core spring and a second movable core spring, the first movable core spring is arranged between the static core and the movable core, and the second movable core spring is arranged between the movable core and the movable core sealing pad.

As a further improvement of the utility model, one end of the valve body, which is far away from the electromagnet mechanism, is provided with a bottom cover; a mandril is arranged between the movable iron core and the bottom cover, one end of the mandril is propped against the movable iron core, a first spring is arranged between the other end of the mandril and the bottom cover, and a mandril sealing gasket is arranged at the position where the mandril is connected with the first spring.

As a further improvement of the utility model, the movable iron core slides up and down in the vertical direction and simultaneously drives the ejector rod and the ejector rod sealing gasket to slide up and down in the vertical direction; the movable iron core sealing gasket is arranged above the first valve port, the ejector rod sealing gasket is arranged below the second valve port, and the first valve port and the second valve port can be opened and closed when the movable iron core sealing gasket and the ejector rod sealing gasket slide up and down.

As a further improvement, the valve body is provided with a manual mechanism in an inserted manner, the manual mechanism is arranged near one end of the movable valve core, and the manual mechanism comprises: a manual lever, a third spring; the manual rod is arranged along the horizontal direction and can slide along the horizontal direction, the third spring is horizontally arranged in the manual rod and is abutted against the valve body, and the side surface of the manual rod, which is close to one end of the movable valve core, is a first slope in a slope shape; along with the sliding of the manual lever in the horizontal direction, the first inclined plane drives the movable valve core to move up and down, and the conversion between the first working state and the second working state is realized.

As the utility model discloses a further improvement, manually operated mechanism still includes stopper and spacing chamber, and the setting of spacing chamber is in the position department that manual lever and valve body contacted, and the stopper is inserted along vertical direction and is established in the valve body to extend to spacing intracavity portion.

As a further improvement of the present invention, the limiting cavity comprises a first side surface close to the valve body core and a second side surface far from the valve body core, the limiting block is abutted against the first side surface under the restoring force of the third spring, and the pilot valve of the normally open and normally closed shared main body is in a first working state; when the manual rod overcomes the restoring force of the third spring and moves towards the direction close to the center of the valve body under the action of external force, the limiting block abuts against the second side face, and the pilot valve of the normally-open and normally-closed sharing main body is in a second working state.

Based on the technical scheme, the embodiment of the utility model provides a can produce following technological effect at least: the pilot valve of the normally-open and normally-closed sharing main body of the utility model is provided with three working ports P, R and A, wherein the P port is communicated with the cavity through a first valve port; the port R is communicated with the port A through a second valve port; the R port is communicated with the cavity, the R port is communicated with the P port through the first valve port, and the conversion between a normally open state and a normally closed state can be realized by replacing different input interfaces without replacing a pilot valve. The normally open and normally closed mode shares one main body, the structure is simple, the effect is good, and the trouble that the pilot valve is frequently disassembled to replace the normally open and normally closed mode is avoided.

Drawings

The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the pilot valve of the normally open and normally closed shared main body of the present invention when it is not powered.

Fig. 2 is a schematic structural diagram of the pilot valve of the normally open and normally closed shared main body when the pilot valve is electrified.

In the figure, 100, valve body; 110. a first valve port; 120. a second valve port; 130. a cavity; 140. a top rod; 141. a mandril sealing pad; 142. a first spring; 150. a bottom cover; 161. a manual lever; 162. a third spring; 163. a first inclined plane; 164. a limiting block; 165. a limiting cavity; 210. wrapping the coil with plastic; 220. a support; 230. enamelled wires; 240. a framework; 250. a stationary iron core; 260. a movable iron core; 262. a movable iron core sealing gasket; 263. a first movable iron core spring; 264. a first movable iron core spring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 2.

A normally open and normally closed common body pilot valve comprising: the electromagnetic valve comprises an electromagnet mechanism and a valve body 100, wherein the electromagnet mechanism is arranged above the valve body 100, and the valve body 100 is connected with the electromagnet mechanism and surrounds to form a cavity 130; the valve body 100 is provided with a first valve port 110 and a second valve port 120, and particularly, the valve body 100 is hermetically connected with an electromagnet mechanism.

Three working ports are arranged in the valve body 100, and the three working ports are a port P, a port R and a port A from top to bottom in sequence; port P communicates with chamber 130 via first port 110; the port R is communicated with the port A through a second valve port 120; the port R is communicated with the cavity 130, and the port R is communicated with the port P through the first valve port 110. The conversion between the normally open state and the normally closed state can be realized by replacing different input interfaces without replacing the pilot valve.

The pilot valve of the normally open and normally closed shared main body has two working states, namely a first working state: first port 110 is closed, second port 120 is open; the second working state: first port 110 is open and second port 120 is closed.

In this embodiment, the first operating state is set when the power is off, and the second operating state is set when the power is on.

The specific working process is as follows:

in a normally open mode, working medium is injected from an R port; in the first working state, the first valve port 110 is closed, the second valve port 120 is opened, the port R is communicated with the port A, and the working medium injected from the port R flows out of the port A through the second valve port 120 and enters the actuator; in the second working state, the second port 120 is closed, the first port 110 is opened, and the working medium in the actuator flows in from the port a, enters the cavity 130, flows out from the port P through the first port 110.

In the normal close mode, working medium is injected from a port P; in the first working state, the first valve port 110 is closed, the second valve port 120 is opened, the working medium at the P port does not flow, the working medium in the actuator flows in from the a port, and flows out from the R port through the second valve port 120; in the second working state, the first port 110 is opened, the second port 120 is closed, and the working medium flowing from the port P enters the cavity 130, flows out from the port a and enters the actuator.

In the present embodiment, the working medium is in the normally open mode when injected from the R port, and the working medium is in the normally closed mode when injected from the P port. The normally open and normally closed mode shares one main body, the structure is simple, the effect is good, and the trouble that the pilot valve is frequently disassembled to replace the normally open and normally closed mode is avoided.

The electromagnet mechanism comprises a coil plastic-coated 210, a bracket 220, an enameled wire 230, a framework 240, a movable iron core 260 and a static iron core 250 from outside to inside in sequence.

The electromagnet mechanism comprises a movable iron core 260 and a static iron core 250; the movable iron core 260 and the static iron core 250 are coaxially arranged along the vertical direction, the static iron core 250 is fixedly arranged at one end far away from the valve body 100, the movable iron core 260 is movably arranged at one end close to the valve body 100, and the movable iron core 260 can move up and down; when the power is turned on, the movable iron core 260 moves upward to be close to the stationary iron core 250, and when the power is turned off, the movable iron core 260 moves downward to be far away from the stationary iron core 250.

The bracket 220 is arranged outside the framework 240, the enameled wire 230 is arranged between the bracket 220 and the framework 240, and the coil plastic-coated 210 is wrapped outside the bracket 220.

Further, the movable iron core 260 is embedded with a movable iron core spring and a movable iron core sealing gasket 262, one end of the movable iron core spring is abutted to the stationary iron core 250, and the other end of the movable iron core spring is abutted to the movable iron core sealing gasket 262.

Further, the movable iron core spring comprises a first movable iron core spring 263 and a second movable iron core spring 264, the first movable iron core spring 263 is arranged between the stationary iron core 250 and the movable iron core 260, and the second movable iron core spring 264 is arranged between the movable iron core 260 and the movable iron core sealing gasket 262. Specifically, the first plunger spring 264 is disposed on the upper portion of the plunger 260, the second plunger spring 264 is disposed on the lower portion of the plunger 260, and the second plunger spring 264 has a damping effect.

The valve body 100 is hermetically connected with the bracket 220, and the valve body 100, the bracket 220 and the movable iron core 260 surround together to form a cavity 130.

The end of the valve body 100 remote from the electromagnet mechanism is provided with a bottom cover 150. A top rod 140 is arranged between the movable iron core 260 and the bottom cover 150, one end of the top rod 140 abuts against the movable iron core 260, a first spring 142 is arranged between the other end of the top rod 140 and the bottom cover 150, and a sealing gasket 141 is arranged at the connecting position of the top rod 140 and the first spring 142.

Further, the movable iron core 260 slides up and down in the vertical direction and drives the top rod 140 and the sealing pad 141 to slide up and down in the vertical direction.

Further, the plunger seal 262 is disposed above the first valve port 110, the seal 141 is disposed below the second valve port 120, and the plunger seal 262 and the seal 141 can open and close the first valve port 110 and the second valve port 120 when sliding up and down.

Specifically, the movable iron core 260 drives the push rod 140 to slide downwards to enter a first working state, the movable iron core sealing gasket 262 slides downwards synchronously until the first valve port 110 abuts against the movable iron core sealing gasket 262, the first valve port 110 is blocked by the movable iron core sealing gasket 262 to be closed, the sealing gasket 141 slides downwards synchronously, the second valve port 120 is separated from the sealing gasket 141, and the second valve port 120 is opened; the plunger 140 is driven by the plunger 260 to slide upwards to enter the second working state, the plunger gasket 262 slides upwards synchronously, the first valve port 110 is separated from the plunger gasket 262, the first valve port 110 is opened, the gasket 141 slides upwards synchronously until the second valve port 120 abuts against the gasket 141, and the second valve port 120 is blocked by the gasket 141 and then closed.

When the pilot valve of the normally-open and normally-closed shared main body is powered off, the pilot valve enters a first working state, the magnetic attraction between the movable iron core 260 and the static iron core 250 disappears, the movable iron core 260 moves towards the direction away from the static iron core 250, the movable iron core 260 descends, the movable iron core sealing gasket 262, the push rod 140 and the sealing gasket 141 descend synchronously, the movable iron core sealing gasket 262 blocks the first valve port 110, the first valve port 110 is closed, the push rod 140 descends to enable the sealing gasket 141 to be separated from the second valve port 120, and the second valve port 120 is opened.

When the pilot valve of the normally-open and normally-closed shared main body is powered on, the pilot valve enters a second working state, magnetic attraction is generated between the movable iron core 260 and the static iron core 250, the movable iron core 260 moves towards the static iron core 250, the movable iron core 260 rises, the movable iron core sealing gasket 262, the ejector rod 140 and the sealing gasket 141 rise synchronously, the movable iron core sealing gasket 262 is separated from the first valve port 110, the first valve port 110 is opened, the ejector rod 140 descends, the sealing gasket 141 blocks the second valve port 120, and the second valve port 120 is closed.

The movable iron core 260 and the push rod 140 are provided to convert the power-on/off into the vertical movement of the movable iron core 260 and the push rod 140, thereby opening and closing the first valve port 110 and the second valve port 120.

Further, still insert in the valve body 100 and be equipped with manual mechanism, it sets up in the one end that is close to the movable valve core, and manual mechanism includes: a manual lever 161, and a third spring 162. The manual lever 161 is provided in a horizontal direction to be slidable in the horizontal direction, the third spring 162 is horizontally installed in the manual lever 161 to be in contact with the valve body 100, and a side surface of the manual lever 161 near one end of the movable valve body is a first slope 163 having a slope shape. The manual mechanism is arranged to enable the switching between the first working state and the second working state to be manually controlled besides power on and power off.

When the manual lever 161 slides towards the direction close to the center of the valve body 100, the first inclined plane 163 starts to approach the movable iron core 260 until the movable iron core 260 abuts against the first inclined plane 163, and as the manual lever 161 continues to slide towards the direction close to the center of the valve body 100, the first inclined plane 163 drives the movable iron core 260 to move upwards, so that the pilot valve of the normally-open and normally-closed shared main body enters a second working state; when the manual lever 161 slides towards the direction away from the center of the valve body 100, the first inclined surface 163 drives the movable iron core 260 to move downwards, and as the manual lever 161 continues to slide towards the direction away from the center of the valve body 100, the movable iron core 260 gradually disengages from the first inclined surface 163, so that the pilot valve of the normally-open and normally-closed shared main body enters the first working state.

Further, the manual mechanism further includes a stopper 164 and a stopper cavity 165, the stopper cavity 165 is provided at a position where the manual lever 161 contacts the valve body 100, and the stopper 164 is inserted into the valve body 100 in the vertical direction and extends to the inside of the stopper cavity 165.

Furthermore, the limit cavity 165 includes a first side surface close to the center of the valve body 100 and a second side surface far from the center of the valve body 100, under the restoring force of the third spring 162, the limit block 164 abuts against the first side surface, at this time, the movable iron core 260 is separated from the first inclined surface 163, and the pilot valve of the normally-open and normally-closed shared main body is in the first working state; when the manual lever 161 overcomes the restoring force of the third spring 162 to move toward the direction close to the center of the valve body 100 under the action of an external force, the limit block 164 abuts against the second side surface, at this time, the first inclined surface 163 drives the movable iron core 260 to move upward, and the pilot valve of the normally-open and normally-closed shared main body is in the second working state. The switching between the first working state and the second working state of the pilot valve of the normally-open and normally-closed shared main body can be controlled by controlling the manual rod 161.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A pilot valve of a normally open and normally closed common body, comprising:

the electromagnetic valve comprises an electromagnet mechanism and a valve body, wherein the electromagnet mechanism is arranged above the valve body, and the valve body is connected with the electromagnet mechanism and surrounds the electromagnet mechanism to form a cavity; a first valve port and a second valve port are arranged in the valve body; three working ports are arranged in the valve body, and the three working ports are a port P, a port R and a port A from top to bottom in sequence; the port P is communicated with the cavity through a first valve port; the port R is communicated with the port A through a second valve port; the R port is communicated with the cavity, and the R port is communicated with the P port through the first valve port.

2. The pilot valve of a normally open and normally closed shared main body according to claim 1, wherein the electromagnet mechanism internally comprises a movable iron core and a static iron core; move the coaxial setting of iron core and quiet iron core along vertical direction, quiet iron core is fixed to be set up and is keeping away from valve body one end, moves the iron core activity and sets up and be close to valve body one end, moves the iron core and can reciprocate.

3. The pilot valve of the normally open and normally closed shared main body according to claim 2, wherein a movable iron core spring and a movable iron core sealing gasket are embedded in the movable iron core, one end of the movable iron core spring abuts against the static iron core, and the other end of the movable iron core spring abuts against the movable iron core sealing gasket.

4. A pilot valve of a normally open and normally closed shared body as claimed in claim 3, wherein a bottom cover is arranged at one end of the valve body away from the electromagnet mechanism; a mandril is arranged between the movable iron core and the bottom cover, one end of the mandril is propped against the movable iron core, a first spring is arranged between the other end of the mandril and the bottom cover, and a mandril sealing gasket is arranged at the position where the mandril is connected with the first spring.

5. The pilot valve of the normally open and normally closed shared main body according to claim 4, wherein the movable iron core slides up and down in the vertical direction and drives the push rod and the push rod sealing gasket to slide up and down in the vertical direction; the movable iron core sealing gasket is arranged above the first valve port, the ejector rod sealing gasket is arranged below the second valve port, and the first valve port and the second valve port can be opened and closed when the movable iron core sealing gasket and the ejector rod sealing gasket slide up and down.

6. A pilot valve of a normally open and normally closed common main body as claimed in claim 1, wherein a manual mechanism is further inserted in the valve body and disposed at one end close to the movable valve core, the manual mechanism comprises: a manual lever, a third spring; the manual rod is arranged along the horizontal direction and can slide along the horizontal direction, the third spring is horizontally arranged in the manual rod and is abutted against the valve body, and the side surface of the manual rod, which is close to one end of the movable valve core, is a first slope in a slope shape; along with the sliding of the manual lever in the horizontal direction, the first inclined plane drives the movable valve core to move up and down, and the conversion between the first working state and the second working state is realized.

7. A pilot valve of a normally open and normally closed common body according to claim 6, wherein the manual mechanism further comprises a limit block and a limit chamber, the limit chamber is provided at a position where the manual lever contacts the valve body, and the limit block is inserted in the valve body in a vertical direction and extends to the inside of the limit chamber.

8. The pilot valve of the normally open and normally closed shared body according to claim 7, wherein the limit cavity comprises a first side surface close to the valve body core and a second side surface far away from the valve body core, the limit block is abutted against the first side surface under the restoring force of the third spring, and the pilot valve of the normally open and normally closed shared body is in the first working state; when the manual rod overcomes the restoring force of the third spring and moves towards the direction close to the center of the valve body under the action of external force, the limiting block abuts against the second side face, and the pilot valve of the normally-open and normally-closed sharing main body is in a second working state.

9. The pilot valve of a normally open and normally closed common main body according to claim 4, wherein the movable iron core spring comprises a first movable iron core spring and a second movable iron core spring, the first movable iron core spring is arranged between the static iron core and the movable iron core, and the second movable iron core spring is arranged between the movable iron core and the movable iron core sealing gasket.