Single-winding pulse double-wire control type self-holding high-pressure electromagnetic valve

Abstract

The utility model relates to the technical field of electromagnetic valve equipment, and discloses a single-winding pulse double-wire control type self-holding high-pressure electromagnetic valve which is characterized in that a non-magnetic tube is mounted at a valve port of a valve body, a sliding cavity is formed between the non-magnetic tube and the valve port, a magnetic moving part is connected in the sliding cavity in a sliding manner, and the shape of the magnetic moving part is matched with that of a circulating groove; an elastic piece is arranged between the magnetic moving piece and the sliding cavity, a permanent magnet part with a constant magnetic field is arranged on the outer side of the sliding cavity, and a variable magnetic part is arranged at the end, away from the valve body, of the non-magnetic pipe and used for changing the magnetic field to drive the magnetic moving piece to move. The control of opening the valve by forward pulse and closing the valve by reverse pulse is realized. The electric energy consumption in the using process of the valve is effectively reduced, and a solution is provided for a normal-pressure or high-pressure electromagnetic valve place where power cannot be supplied for a long time. The utility model has the effect of saving electric energy.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve equipment technical field, concretely relates to a single winding pulse double -line control type self -holding high pressure solenoid valve. BACKGROUND

[0002] High pressure solenoid valve is a kind of electromagnetic control device under high pressure environment, is widely used in industrial automation system, for controlling the on-off of fluid medium, solenoid valve is opened in the inside for the flow channel of fluid and outflow channel, valve body is opened with valve port, valve port is connected with flow channel and outflow channel respectively, solenoid valve is powered on, magnetic field is generated in coil, magnetic field attracts or repels the core, makes the spool to move, to change the state of fluid channel, realizes the control to medium.The existing high pressure solenoid valve is usually divided into normal open type and normal closed type.Normal open type is closed in power-off state, and the passage is opened in power-on state;Normal closed type is opposite, so when the solenoid valve needs to be normally open or closed, the power supply needs to be always connected, in order to save electric energy, the following improvement is proposed. SUMMARY

[0003] The utility model intends to provide a single winding pulse double -line control type self -holding high pressure solenoid valve, to solve the problem of electric energy waste caused by the need of always being powered on when high pressure solenoid valve is normally open or closed.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a single winding pulse double -line control type self -holding high pressure solenoid valve, valve body is installed with non-magnetic tube at valve port, sliding cavity is formed between non-magnetic tube and valve port, magnetic moving piece is slidably connected in sliding cavity, the shape of magnetic moving piece is adapted to flow channel, elastic member is arranged between magnetic moving piece and sliding cavity, permanent magnet part with invariable magnetic field is arranged on the outside of sliding cavity, variable magnetic part is arranged on the end of non-magnetic tube away from valve body, and variable magnetic part changes magnetic field to drive magnetic moving piece to move.

[0005] The beneficial effects of the scheme are as follows: magnetic moving piece is located in sliding cavity for a long time, and interacts with permanent magnet part for a long time, which causes the magnetization of magnetic moving piece by permanent magnet part, the magnetic field direction of permanent magnet part is vertically upward, variable magnetic part can change the magnetic field direction, when the magnetic field direction of variable magnetic part is the same as that of permanent magnet part, they jointly act on magnetic moving piece, which causes magnetic moving piece to separate from valve port, and the valve is opened, after the magnetic field of variable magnetic part is zero, since magnetic moving piece is magnetized, magnetic moving piece generates suction force on variable magnetic part, so the elastic force of elastic member is overcome to keep the valve open, when the magnetic field direction of variable magnetic part is opposite to that of permanent magnet part, magnetic moving piece is pressed downward to valve port, and the valve is closed, after the magnetic field of variable magnetic part is zero, since magnetic moving piece is away from variable magnetic part, the acting force of permanent magnet part on magnetic moving piece is difficult to overcome the elastic force of elastic member, so magnetic moving piece keeps contacting with valve port, and the valve keeps closed, therefore, in the scheme, only one power supply is needed to change the valve switch, compared with the prior art, the effect of saving electric energy is achieved.

[0006] Further, the magnetic changing part comprises a magnetic fixing element fixedly connected to the non-magnetic tube away from the valve body end, and a coil arranged at the outer ring of the magnetic fixing element, the coil being connected with a socket, the socket being connected with a power supply, and the socket being used for changing the current direction.

[0007] Further, the magnetic changing part further comprises a mounting shell, the mounting shell being provided with a first mounting hole for the magnetic fixing element and the non-magnetic tube to pass through, and the coil being mounted in the mounting shell, and the socket being mounted on the outer side of the mounting shell.

[0008] Further, the permanent magnetic part comprises a magnet shell mounted on the outer ring of the non-magnetic tube, the magnet shell being provided with a second mounting hole for the non-magnetic tube to pass through, and the permanent magnet being mounted in the magnet shell.

[0009] Further, the elastic element is connected between the magnetic moving element and the non-magnetic tube.

[0010] Further, the elastic element is a spring.

[0011] Further, the magnetic moving element and the magnetic fixing element are respectively a moving iron core and a fixed iron core.

[0012] Further, the permanent magnet is a magnet. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a sectional structure schematic view of the whole structure of the embodiment of the utility model;

[0014] Figure 2 It is a partial structure schematic view of the valve port and the moving iron core connection in A place; Figure 1

[0015] Figure 3 It is a structure schematic view of the moving iron core of the embodiment of the utility model;

[0016] Figure 4 It is a non-magnetic tube and fixed iron core welding structure schematic view of the embodiment of the utility model;

[0017] Figure 5 It is a socket structure schematic view of the embodiment of the utility model. DETAILED DESCRIPTION

[0018] The following is further explained in detail through specific embodiments:

[0019] The reference signs in the drawings of the specification comprise: valve body 1, valve port 11, non-magnetic tube 2, sliding cavity 21, moving iron core 211, top plate 2111, buffer groove 2112, spring 212, boss 22, permanent magnetic part 3, magnet shell 31, magnet 311, magnetic changing part 4, fixed iron core 41, mounting shell 42, coil 421, socket 43, first terminal 431, and second terminal 432.

[0020] ​Example

[0021] A single-winding pulse dual-wire control type self-holding high-pressure solenoid valve, such as Figures 1-3 As shown, the device includes a valve body 1. The top of the valve body 1 has a valve port 11 connected to an inlet channel and an outlet channel, respectively. The bottom of the valve port 11 has a conical notch. A non-magnetic tube 2 is interference-fitted to the top of the valve body 1 at the valve port 11. Therefore, the interior of the non-magnetic tube 2 is connected to the valve port 11, forming a sliding cavity 21. A moving iron core 211 is slidably connected up and down inside the non-magnetic tube 2. The bottom of the moving iron core 211 has a conical protrusion. The conical protrusion of the moving iron core 211 is connected to the valve port... The conical notch of 11 corresponds to and fits perfectly. The bottom end of the moving iron core 211 is provided with a top plate 2111 for abutting against the bottom surface of the connecting groove. A conical protrusion is provided on the surface of the top plate 2111. The top plate 2111, the conical protrusion and the moving iron core 211 are all integrally formed. A buffer groove 2112 is provided between the moving iron core 211 and the top plate 2111. A spring 212 is connected between the inner ring of the non-magnetic tube 2 and the top plate 2111. The spring 212 is located in the buffer groove 2112.

[0022] like Figures 1-4 As shown, the magnetic variable part 4 includes a fixed iron core 41 fixedly welded to the top of the non-magnetic tube 2. The outer diameter of the fixed iron core 41 is equal to the outer diameter of the non-magnetic tube 2. A mounting shell 42 is fitted around the outer ring of the fixed iron core 41. A first mounting hole is opened in the middle of the mounting shell 42 for the fixed iron core 41 and the non-magnetic tube 2 to pass through. A coil 421 skeleton is fixedly installed in the inner cavity of the mounting shell 42. A coil 421 is wound around the outer ring of the coil 421 skeleton. The fixed iron core 41 and the upper end of the coil 421 skeleton are interference-fitted, and the non-magnetic tube 2 and the lower end of the coil 421 skeleton are interference-fitted, so that the fixed iron core 41 and the non-magnetic tube 2 are installed in the first mounting hole.

[0023] like Figures 1-4 As shown, a boss 22 is provided on the outer side of the non-magnetic tube 2. The diameter of the boss 22 is larger than the outer diameter of the non-magnetic tube 2. An installation groove is formed between the boss 22 and the mounting shell 42. The permanent magnet part 3 includes a magnet shell 31 installed in the mounting groove. The magnet shell 31 is interference-fitted in the mounting groove. A second mounting hole for the non-magnetic tube 2 to pass through is opened in the middle of the magnet shell 31. The non-magnetic tube 2 and the second mounting hole are interference-fitted. A cavity for installing a magnet 311 is opened on the outer ring of the magnet shell 31 at the second mounting hole. The magnet 311 is installed in the magnet shell 31 through the cavity. The moving iron core 211 is placed in the sliding groove for a long time and is magnetized by the magnetic field of the magnet 311. Therefore, the moving iron core 211 has magnetism. The top of the fixed iron core 41 protrudes from the mounting shell 42, and a nut is connected to the top of the fixed iron core 41. The nut abuts against the top of the mounting shell 42.

[0024] like Figures 1-5As shown, the outside of the mounting shell 42 is fixedly mounted with a socket 43, the socket 43 is provided with a first terminal 431 and a second terminal 432, the first terminal 431 and the second terminal 432 are used to connect the direct current power supply, and can exchange the positive and negative poles of the power supply, a nonlinear resistance element is installed in the socket 43, and the two ends of the nonlinear resistance element are respectively connected with the first terminal 431 and one end of the coil 421. When the first terminal 431 is connected with the positive pole of the direct current power supply and the second terminal 432 is connected with the negative pole, the resistance of the nonlinear resistance element is small, resulting in a large current in the coil 421, a larger magnetic field is formed in the magnetic change part 4, the magnetic field direction of the magnetic change part 4 is the same as the magnetic field direction of the magnet 311. At this time, the moving iron core 211 slides upward under the action of the magnet 311 and the fixed iron core 41 and overcomes the elastic force of the spring 212, and is attracted to the fixed iron core 41. At this time, the bottom end of the moving iron core 211 is disconnected with the valve port 11, the spring 212 is compressed, the valve port 11 is connected with the inflow channel and the outflow channel, the valve is opened, the power supply is disconnected after 50ms, and after the power supply is disconnected, the fixed iron core 41 loses magnetism, but because the moving iron core 211 is in contact with the moving iron core 211 before the power is disconnected, at this time, because the moving iron core 211 has magnetism, the magnet 311 has an upward force on the moving iron core 211, therefore, the force of the magnet 311 and the attraction of the moving iron core 211 to the fixed iron core 41 overcome the elastic force of the spring 212, so as to achieve the purpose of keeping the valve open after the power is disconnected.

[0025] When the second terminal 432 is connected with the positive pole of the direct current power supply and the first terminal 431 is connected with the negative pole, the current direction in the nonlinear resistance element changes to cause the resistance to increase, so the current in the coil 421 is small, a smaller magnetic field is formed in the magnetic change part 4, and the magnetic field direction of the magnetic change part 4 is opposite to the direction of the magnet 311. This will not interfere with the magnetic field of the magnet 311, nor will it affect the normal work of the valve core. At this time, the moving iron core 211 is still subjected to the upward magnetic force of the magnet 311, and the spring 212 needs to recover the deformation, so the spring 212 has a downward elastic force on the moving iron core 211, and is also subjected to the downward magnetic force of the magnetic change part 4. The magnet 311 cannot overcome the downward force, resulting in that the moving iron core 211 slides downward and fully contacts with the bottom end of the valve port 11, so that the valve is closed, the power supply is disconnected after 50ms, and after the power supply is disconnected, the magnetic field on the fixed iron core 41 disappears. At this time, the moving iron core 211 is subjected to the upward magnetic force of the magnet 311, and because the moving iron core 211 is away from the fixed iron core 41 and connected with the valve port 11 before the power is disconnected, the magnetic force of the moving iron core 211 to the fixed iron core 41 tends to zero, so the force of the magnet 311 to the moving iron core 211 cannot overcome the elastic force of the spring 212, therefore, the moving iron core 211 remains in contact with the flow channel, and the purpose of keeping the valve closed after the power is disconnected is achieved.

[0026] The above only is the embodiment of the present application, and the well-known specific technical solutions and / or common knowledge in the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A single-winding pulse dual-wire control type self-holding high-pressure solenoid valve, characterized in that: A non-magnetic tube is installed at the valve port of the valve body. A sliding cavity is formed between the non-magnetic tube and the valve port. A magnetic actuator is slidably connected in the sliding cavity. The shape of the magnetic actuator is adapted to the flow groove. An elastic element is set between the magnetic actuator and the sliding cavity. A permanent magnet part with a constant magnetic field is set on the outside of the sliding cavity. A variable magnetic part is set at the end of the non-magnetic tube away from the valve body. The variable magnetic part changes the magnetic field to drive the magnetic actuator to move.

2. The single-winding pulse dual-wire control type self-holding high-pressure solenoid valve according to claim 1, characterized in that: The magnetic variable part includes a magnetic stator fixedly connected to the end of the non-magnetic tube away from the valve body, a coil disposed on the outer ring of the magnetic stator, the coil being connected to a socket, the socket being connected to a power source, and the socket being used to change the direction of the current.

3. The single-winding pulse dual-wire control type self-holding high-pressure solenoid valve according to claim 2, characterized in that: The magnetic variable part also includes a mounting shell, which has a first mounting hole through which the magnetic supply element and the non-magnetic tube pass. The coil is installed inside the mounting shell, and the socket is installed on the outside of the mounting shell.

4. The single-winding pulse dual-wire control type self-holding high-pressure solenoid valve according to claim 3, characterized in that: The permanent magnet part includes a magnet shell installed on the outer ring of the non-magnetic tube. The magnet shell has a second mounting hole for the non-magnetic tube to pass through, and a permanent magnet is installed inside the magnet shell.

5. A single-winding pulse dual-wire controlled self-holding high-pressure solenoid valve according to claim 4, characterized in that: The elastic element connects the magnetic element and the non-magnetic tube.

6. A single-winding pulse dual-wire controlled self-holding high-pressure solenoid valve according to claim 5, characterized in that: The elastic element is set as a spring.

7. A single-winding pulse dual-wire controlled self-holding high-pressure solenoid valve according to claim 6, characterized in that: The magnetic actuator and the magnetic stationary actuator are respectively set as a moving iron core and a stationary iron core.

8. A single-winding pulse dual-wire control type self-holding high-pressure solenoid valve according to claim 7, characterized in that: The permanent magnet is set as a magnet.

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