CN213839084U

CN213839084U - Threaded plug-in type electromagnetic proportional hydraulic valve

Info

Publication number: CN213839084U
Application number: CN202021651758.9U
Authority: CN
Inventors: 邓波
Original assignee: NINGBO HAIHONG HYDRAULICS CO Ltd
Current assignee: NINGBO HAIHONG HYDRAULICS CO Ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-07-30
Anticipated expiration: 2030-08-11

Abstract

The utility model provides a screw thread cartridge formula electromagnetism proportion hydrovalve, includes push rod assembly, be equipped with the flux sleeve on the push rod assembly, the flux sleeve is external to have the valve barrel, valve barrel and flux sleeve swing joint, the valve barrel axial sets up first hydraulic fluid port, the valve barrel radially sets up second hydraulic fluid port and third hydraulic fluid port, third hydraulic fluid port and second hydraulic fluid port parallel arrangement set up the case in the valve barrel, its characterized in that, be equipped with the periphery recess on the case, be equipped with the radial hole of valve barrel on the valve barrel, be equipped with the radial hole of case on the case, be equipped with the welding basin mouth on the flux sleeve, the utility model discloses a general mounting hole of industry is convenient for directly replace the ooff valve for the proportional valve, and the main oil circuit adopts balanced structure, reduces the interference of hydrodynamics to the case removal greatly, and solenoid is the common standard component of ooff.

Description

Threaded plug-in type electromagnetic proportional hydraulic valve

Technical Field

The utility model relates to a hydraulic component technical field, concretely relates to screw thread cartridge formula electromagnetism proportion hydrovalve.

Background

The electric control valve in the hydraulic system is usually provided with an electromagnetic switch valve, an electromagnetic proportional valve and an electromagnetic servo valve, the electromagnetic proportional valve usually comprises an electromagnetic proportional pressure valve, an electromagnetic proportional flow valve and an electromagnetic proportional direction valve, the hydraulic valves of the types can realize remote and automatic control by additionally arranging an electromagnetic operation device, the automation of the hydraulic system is realized, the operation flow is greatly saved, and great convenience is brought to production work.

The electromagnetic proportional throttle valve pushes the throttle valve core to move continuously through the proportional electromagnet, so that the area of the throttle opening is changed continuously, the flow passing through is changed, the proportional throttle valve is matched with the pressure compensator to be used, the front position and the rear position of the proportional throttle valve and the pressure compensator can be adjusted according to the requirements of system working conditions, and a front compensation loop and a rear compensation loop of the valve are formed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a screw thread cartridge formula electromagnetism proportion hydrovalve adopts the general mounting hole of industry, is convenient for directly replace the ooff valve for the proportional valve, and the main oil circuit adopts balanced structure, reduces the interference of hydraulic power to the case removal greatly, and solenoid is the ooff valve standard part that commonly uses, and is with low costs, the maintenance of being convenient for.

The utility model provides a screw thread cartridge formula electromagnetism proportion hydrovalve, includes push rod assembly, be equipped with the flux sleeve on the push rod assembly, the flux sleeve is external to have the valve barrel, valve barrel and flux sleeve swing joint, the valve barrel axial sets up first hydraulic fluid port, vertically sets up second hydraulic fluid port and third hydraulic fluid port, first hydraulic fluid port and second hydraulic fluid port set up side by side, set up the case in the valve barrel, its characterized in that, be equipped with case radial hole on the case, be equipped with the periphery recess on the case, case radial hole not with the periphery recess communicates with each other, be equipped with the welding basin mouth on the flux sleeve.

Preferably, the first spring is externally connected with an outer hexagonal structure, and a screw plug, a nut and a manual screw are arranged in the outer hexagonal structure, so that the whole device is easier to mount and dismount.

Preferably, the valve sleeve is in threaded connection with the magnetic conduction sleeve, and the second spring is arranged at one end of the valve sleeve, so that the valve sleeve is more convenient to disassemble and assemble. Preferably, one end of the valve sleeve is sleeved with a limiting pad to limit the displacement of the valve core.

Preferably, a sealing member is mounted on the valve housing to increase the air tightness of the device.

Preferably, the valve core is a step excircle, and the part matched with the valve sleeve is in a groove shape, so that the valve core is more easily matched with the valve sleeve.

Preferably, the flux sleeve is of a brazing structure, and the structure is more reasonable.

Preferably, the cross section of the welding basin mouth is in an isosceles trapezoid shape, so that the welding basin mouth is more suitable for experimental data support.

Compared with the prior art, the utility model discloses set up a suitable angle at case periphery groove end face, change the outflow direction of liquid stream, can offset most hydrodynamic force, make current electro-magnet satisfy operation requirement completely.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Detailed Description

The present invention is further described with reference to the accompanying drawings:

as shown in fig. 1, the threaded plug-in type electromagnetic proportional hydraulic valve includes a push rod assembly 5, a flux sleeve 6 is disposed on the push rod assembly 5, a valve housing 12 is externally connected to the flux sleeve 6, the valve housing 12 and the flux sleeve 6 are movably connected, a first oil port 13 is axially disposed on the valve housing 12, a second oil port 14 and a third oil port 16 are radially disposed on the valve housing 12, the first oil port 13 and the second oil port 14 are disposed in parallel, a valve core 11 is disposed in the valve housing 12, a circumferential groove 15 is disposed on the valve core 11, and a welding basin 18 is disposed on the flux sleeve 6.

When specifically implementing, including following step, the utility model discloses a three lead to type screw thread cartridge formula structure, the cartridge hole adopts ten latus rectum industry universal standard, and is further, and electromagnet coil chooses for use the nineteen hole diameters of general specification on the existing market, fifty long, the ready-made product of outer circle diameter thirty-seven, the utility model discloses in, preceding terminal surface is provided with first hydraulic fluid port 13 and is the oil return opening, and the side is equipped with second hydraulic fluid port 14 and third hydraulic fluid port 16 respectively, and wherein second hydraulic fluid port 14 is the working port, and third hydraulic fluid port 16 is the pressure port, sets up sealing device between every hydraulic fluid port for sealed when the assembly, the 16 left ends of third hydraulic fluid port are external screw thread and outer hexagonal for the assembly of whole throttle valve.

The valve sleeve 12 is internally provided with a through hole, the valve sleeve is provided with a valve sleeve radial hole 19, the valve core 11 is further installed in the valve sleeve 12, the matching mode of the valve core 11 and the valve sleeve 12 is clearance fit, the right end of the valve core 11 is arranged to be a step excircle, the part matched with the valve sleeve 12 is arranged to be a groove shape, the valve sleeve 12 is provided with a valve sleeve radial hole 19, the groove and the radial hole are matched to form a throttling channel, the valve core 11 is provided with a valve core radial hole 17 communicated with the first oil port 13 and the second oil port 14, the left end of the valve core 11 is provided with a small-section step-shaped installation structure, the second spring 8 is matched with the installation structure, the movement of the valve core 11 in the valve sleeve 12 needs to be limited, the second spring 8 is installed at the same time, the limiting pad 9 is installed, the spring seat 7, the screw sleeve 10 and the magnetic sleeve 6 are provided with the limiting pad 9, the relative position of the valve sleeve 12 and the movable range of the valve core 11 are completed, the valve housing 12 is connected with a magnetic conductive sleeve 6, the magnetic conductive sleeve 6 is in threaded connection with the valve housing 12, a push rod component 5 is arranged inside the magnetic conductive sleeve 6, the left end of the push rod component 5 is provided with a first spring 4, a plug screw 2 and a nut 3, meanwhile, in order to prevent the influence of the accidental situations on the equipment, a manual screw 1 is arranged inside the plug screw 2, and limits the motion of the push rod component 5 together with the plug screw 2, the structure design of the magnetic conductive sleeve of the utility model requires that the output thrust of an electromagnet is converted into the displacement of a valve core 11, so the magnetic conductive sleeve 6 adopts a copper welding structure, controls the angle and the length of a welding basin mouth 18 of a welding magnetic isolation ring, simultaneously adjusts the relative position of the push rod component 5 and the basin mouth of the magnetic conductive sleeve 6, tests the matching of the rigidity of a reset spring and the electromagnetic force, the finally determined angle of the welding basin mouth 18 is 37.5 degrees, the length is 3.2 mm, and the distance of the push rod component 5 from the suction surface is 2.1 mm, the spring pre-compression force was 3.6 newtons.

When the three-way proportional throttle valve is in a closed state in an initial state, namely the third oil port 16 and the second oil port 14 are not communicated with each other, the valve sleeve radial hole 19 is communicated with the first oil port 13 through the valve core radial hole 17, after a power supply is connected to work, oil enters from the first oil port 13 and enters the circumferential groove 15 of the valve core 11 through the valve sleeve radial hole 19, the valve core radial hole 17 is not communicated with the circumferential groove 15, and finally slowly tends to balance, at the moment, an electromagnet generates electromagnetic force due to electrification, the electromagnetic force acts on the push rod assembly 5, the moving iron coil moves rightwards under the action of force, the second spring 8 on the valve core 11 deforms and is compressed, at the moment, the current is increased, the second spring 8 is further compressed, the valve core 11 starts to move rightwards, at the moment, the third oil port 16 and the second oil port 14 are communicated, the connection between the first oil port 13 and the second oil port 14 is interrupted, when the push rod assembly 5 touches the limit pad 9, the displacement is prevented, and the choke is opened to the maximum state, the utility model discloses divide into three kinds of flow ranges, when pressure differential is 1.2MPa, maximum flow is 15L/min, 25L/min and 40L/min respectively. In order to utilize the power of the electromagnet and the resolution ratio of the current to the flow as much as possible, the stroke of the valve core 11 is kept unchanged, only the throttle area of the outlet is changed, the flow area of the radial hole of the valve sleeve 12 is finally determined and changed through actual product tests, three flows respectively correspond to 2-phi 3.2 holes, 3-phi 3.5 holes and 6-phi 3.5 holes, the coil current of the electromagnet is reduced, the valve core 11 starts to move leftwards, the throttle opening is gradually reduced until being closed, meanwhile, theoretical calculation and experiments show that when the valve core 11 moves to be opened, oil still generates hydraulic force with closing trend to the valve core 11, the direction of the hydraulic force is opposite to the direction of the electromagnetic force, and a part of the electromagnetic force can be consumed, the utility model discloses a deflection angle which rotates 30 degrees anticlockwise from the vertical direction is arranged on the end face of a groove 15 of the circumferential face of the valve core, and the outflow direction of the liquid flow is changed, most of hydrodynamic force can be offset, so that the existing electromagnet completely meets the use requirement.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims

1. The threaded plug-in type electromagnetic proportional hydraulic valve is characterized by comprising a push rod assembly (5), wherein a magnetic conductive sleeve (6) is arranged on the push rod assembly (5), the push rod assembly (5) is connected with a first spring (4) and a second spring (8), a valve sleeve (12) is externally connected with the magnetic conductive sleeve (6), the valve sleeve (12) is movably connected with the magnetic conductive sleeve (6), a first oil port (13) is axially arranged on the valve sleeve (12), a second oil port (14) and a third oil port (16) are radially arranged on the valve sleeve (12), the third oil port (16) and the second oil port (14) are arranged in parallel, a valve core (11) is arranged in the valve sleeve (12), a valve sleeve radial hole (19) is formed in the valve sleeve, a valve core radial hole (17) is formed in the valve core, a circumferential groove (15) is formed in the valve core (11), and the valve core radial hole (17) is not communicated with the circumferential groove (15), the flux sleeve is provided with a welding basin opening (18).

2. The threaded cartridge electromagnetic proportional hydraulic valve according to claim 1, wherein the first spring (4) is externally connected with an external hexagonal structure, and a plug screw (2), a nut (3) and a manual screw (1) are arranged in the external hexagonal structure.

3. The threaded cartridge electromagnetic proportional hydraulic valve according to claim 1, characterized in that the valve housing (12) is in threaded connection with the flux sleeve (6), and the second spring (8) is installed in the cavity at the connection of the valve housing (12) and the flux sleeve (6).

4. A threaded cartridge electro-magnetic proportional hydraulic valve according to claim 1, characterized in that one end of the valve housing (12) is fitted with a limit pad (9).

5. A threaded cartridge electro-magnetic proportional hydraulic valve according to claim 1, characterized in that said valve housing (12) is fitted with a seal.

6. The threaded cartridge electromagnetic proportional hydraulic valve according to claim 1, characterized in that the spool (11) is a stepped outer circle, and the fitting portion with the valve sleeve (12) is in the shape of a groove.

7. The threaded cartridge electromagnetic proportional hydraulic valve according to claim 1, wherein said flux sleeve (6) is of brazed construction.

8. The threaded cartridge electro-magnetic proportional hydraulic valve of claim 1, wherein the weld basin (18) is isosceles trapezoid in cross-sectional shape.