Three-position five-way electromagnetic commutating screw cartridge valve

Abstract

A three-position five-way electromagnetic commutation threaded cartridge valve is characterized by comprising a magnetic conducting sleeve, a fixed iron, a moving iron, a first coil, a second coil, a valve sleeve, a valve core and a connecting rod, the valve sleeve is arranged on the installation port of the magnetic conducting sleeve and extends outward, the valve sleeve is axially hollow and an axial oil port is formed at the front end, the valve core is arranged in the valve sleeve in an axially movable manner and has an axial inner cavity, the connecting rod is arranged in the axial channel of the fixed iron in an axially movable manner and is connected with the valve core at the front end and connected with the moving iron at the rear end. The valve core and the valve sleeve are hollow in design, have strong flow capacity, balanced stress, high working pressure, few whole parts, compact structure, high integration, good reliability, small running resistance and fully realize the three-position five-way commutation control function.

Description

Technical Field

[0001] This utility model relates to a valve, and more particularly to a three-position five-way valve, which can be applied to industrial hydraulic machinery and equipment, and mobile hydraulic equipment. Background Technology

[0002] The three-position five-way solenoid directional valve is a basic directional control valve in hydraulic transmission and control components. It can be widely used in various fields of industrial hydraulic machinery and mobile hydraulic equipment. In addition to the traditional multi-state switching between the inlet, return, and actuator inlet / outlet ports, the three-position five-way valve adds a control port that connects to the inlet in the working position and the return in the neutral position, thereby providing control oil to another actuator. Existing methods require stacking multiple two-position valves or complex pilot circuits on top of commonly used three-position four-way control valves, resulting in low integration, high flow resistance loss, high overall cost, and low reliability. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a compact three-position five-way electromagnetic reversing threaded cartridge valve in view of the above-mentioned technical status.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a three-position five-way electromagnetic reversing threaded cartridge valve, characterized in that it includes...

[0005] A magnetic sleeve having an inner cavity and an installation port formed at the front end;

[0006] The fixed iron is located in the mounting port of the aforementioned magnetic sleeve and has an axial channel;

[0007] The moving iron is axially movable within the cavity of the aforementioned magnetic sleeve;

[0008] The first coil is located on the outer periphery of the aforementioned magnetic sleeve and is arranged corresponding to the aforementioned moving iron.

[0009] The second coil is located on the outer periphery of the aforementioned magnetic sleeve and is arranged corresponding to the aforementioned moving iron.

[0010] The valve sleeve is located on the aforementioned magnetic sleeve mounting port and extends outward. The valve sleeve is axially hollow and has an axial oil port formed at the front end. It is radially provided with a first working oil port, a return oil port, a second working oil port and an inlet oil port in sequence from front to back.

[0011] The valve core is axially movable and disposed within the aforementioned valve sleeve and has an axial inner cavity. The front opening of the axial inner cavity corresponds to the aforementioned axial oil port, and a first oil hole, a second oil hole, and a third oil hole communicating with the axial inner cavity are opened radially from front to back in sequence.

[0012] A spring, located within the mounting port of the aforementioned magnetic sleeve, consistently forces the valve core to maintain a forward-moving tendency; and

[0013] The connecting rod is axially movable within the axial channel of the stationary iron and is connected to the valve core at its front end and to the moving iron at its rear end.

[0014] With both the first and second coils de-energized, the valve core is positioned in the middle of the valve sleeve under the action of the spring, and the oil inlet, the first working oil port and the second working oil port are all closed. The axial oil port and the return oil port are connected through the second oil hole.

[0015] When the first coil is energized and the second coil is de-energized, the moving iron moves backward, the connecting rod pulls the valve core to move backward, the oil port of the second working chamber is closed, the oil inlet is connected to the axial oil port and is connected to the first working oil port through the first oil hole, and is connected to the return oil port through the second oil hole.

[0016] When the first coil is de-energized and the second coil is energized, the moving iron moves forward, which in turn pushes the valve core forward via the connecting rod. The first working oil port is closed, the oil inlet is connected to the axial oil port and then to the second working oil port via the third oil hole, and finally to the return oil port via the second oil hole.

[0017] Furthermore, both the front and rear ends of the connecting rod are connected to the valve core and the moving iron via radially arranged rolled cylindrical pins.

[0018] The spring is preferably installed as follows: the front end of the fixed iron has a stepped portion, and a gasket is provided on the stepped portion; the rear end of the valve core is provided with a spring seat; the spring is sleeved on the outer periphery of the connecting rod and its front end abuts against the spring seat, and its rear end abuts against the gasket.

[0019] Furthermore, the first coil and the second coil are axially spaced on the outer periphery of the magnetic sleeve and separated by a retaining ring.

[0020] Compared with the prior art, the advantages of this utility model are: both the valve core and the valve sleeve are hollow, with strong flow capacity, balanced force, and high working pressure; the axial oil port is controlled by this valve and can also be used as an oil inlet for linkage control, which is simple and practical; the overall number of parts is small, compact, highly integrated, reliable, and has low operating resistance, fully realizing the three-position five-way reversing control function. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of an embodiment.

[0022] Figure 2 for Figure 1 Enlarged view of the valve sleeve.

[0023] Figure 3 for Figure 1 Enlarged view of the central valve core. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 As shown, the three-position five-way electromagnetic reversing threaded cartridge valve in this embodiment includes a magnetic sleeve 1, a fixed iron 6, a moving iron 5, a first coil 1s, a second coil 2s, a valve sleeve 2, a valve core 3, a spring 4, and a connecting rod 7.

[0026] The magnetic sleeve 1 has an inner cavity and a mounting port is formed at the front end; the fixed iron 6 is disposed in the mounting port of the magnetic sleeve 1 and has an axial channel; the moving iron 5 is disposed in the inner cavity of the magnetic sleeve 1 in an axially movable manner.

[0027] The first coil 1s is located on the outer periphery of the magnetic sleeve 1 and is arranged corresponding to the moving iron 5; the second coil 2s is located on the outer periphery of the magnetic sleeve 1 and is arranged corresponding to the moving iron 5; in this embodiment, the first coil 1s and the second coil 2s are axially spaced on the outer periphery of the magnetic sleeve 1 and separated by a retaining ring 8.

[0028] Combination Figure 2 As shown, the valve sleeve 2 is mounted on the installation port of the magnetic sleeve 1 and extends outward. The valve sleeve 2 is axially hollow and has an axial oil port 21 formed at the front end. It is radially provided with a first working oil port 22, a return oil port 231, a second working oil port 24 and an oil inlet port 25 in sequence from front to back. In this embodiment, the return oil port 231 adopts three independent oil ports.

[0029] Combination Figure 3 As shown, the valve core 3 is axially movable inside the valve sleeve 2 and has an axial inner cavity. The front opening of the axial inner cavity corresponds to the axial oil port 21. A first oil hole 31, a second oil hole 32 and a third oil hole 33 are opened radially from front to back and communicate with the axial inner cavity.

[0030] Spring 4 is located inside the mounting port of magnetic sleeve 1 and always forces valve core 3 to maintain a forward movement tendency; the specific configuration of spring 4 is as follows: the front end of fixed iron 6 has a stepped part 61, and a gasket 41 is provided on the stepped part 61; the rear end of valve core 3 is provided with a spring seat 42; spring 4 is sleeved on the outer periphery of connecting rod 7 and its front end abuts against spring seat 42, and its rear end abuts against gasket 41.

[0031] The connecting rod 7 is axially movable within the axial channel of the fixed iron 6, with its front end connected to the valve core 3 and its rear end connected to the moving iron 5. Specifically, both the front and rear ends of the connecting rod 7 are connected to the valve core 3 and the moving iron 5 via radially arranged rolled cylindrical pins 71. The rolled cylindrical pins 71 are elastic and can automatically adjust after connection, making the movement of the valve core by the moving iron smooth.

[0032] Working principle: When both the first coil 1s and the second coil 2s are de-energized, the valve core 3 is in the middle position of the valve sleeve 2 under the action of the spring 4. The oil inlet 25, the first working oil port 22 and the second working oil port 24 are all closed. The axial oil port 21 and the return oil port 231 are connected through the second oil hole 32.

[0033] When the first coil is energized for 1 second and the second coil is de-energized for 2 seconds, the moving iron 5 moves backward, the connecting rod 7 pulls the valve core 3 to move backward, the oil port of the second working chamber is closed, the oil inlet 25 is connected to the axial oil port 21 and is connected to the first working oil port 22 through the first oil hole 31, and is connected to the return oil port 231 through the second oil hole 32.

[0034] When the first coil is de-energized for 1 second and the second coil is energized for 2 seconds, the moving iron 5 moves forward, which pushes the valve core 3 forward through the connecting rod 7. The first working oil port 22 is closed, the oil inlet 25 is connected to the axial oil port 21 and is connected to the second working oil port 24 through the third oil hole 33, and is connected to the return oil port 231 through the second oil hole 32.

[0035] Both the valve core and valve sleeve are hollow, providing strong flow capacity, balanced force, and high working pressure. The axial oil port is controlled by the valve itself and can also be used as an inlet for linkage control, making it simple and practical. The overall design has few parts, is compact, highly integrated, reliable, and has low operating resistance, fully realizing the three-position five-way reversing control function. It adopts a threaded cartridge screw-on installation, resulting in a simple and compact structure.

Claims

1. A three-position five-way electromagnetic reversing threaded cartridge valve, characterized in that... include A magnetic sleeve (1) has an inner cavity and a mounting port formed at the front end; The fixed iron (6) is located in the mounting port of the aforementioned magnetic sleeve (1) and has an axial channel; The moving iron (5) is axially movable and disposed in the inner cavity of the aforementioned magnetic sleeve (1); The first coil (1s) is located on the outer periphery of the aforementioned magnetic sleeve (1) and is arranged corresponding to the aforementioned moving iron (5); The second coil (2s) is located on the outer periphery of the aforementioned magnetic sleeve (1) and is arranged corresponding to the aforementioned moving iron (5); The valve sleeve (2) is located on the mounting port of the aforementioned magnetic sleeve (1) and extends outward. The valve sleeve (2) is axially hollow and has an axial oil port (21) formed at the front end. It is radially provided with a first working oil port (22), a return oil port (231), a second working oil port (24) and an oil inlet (25) in sequence from front to back. The valve core (3) is axially movable and is disposed in the aforementioned valve sleeve (2) and has an axial inner cavity. The front opening of the axial inner cavity corresponds to the aforementioned axial oil port (21). A first oil hole (31), a second oil hole (32) and a third oil hole (33) communicating with the axial inner cavity are opened radially from front to back in sequence. A spring (4) is provided within the mounting port of the aforementioned magnetic sleeve (1) and always forces the valve core (3) to maintain a forward-moving tendency; and The connecting rod (7) is axially movable in the axial channel of the fixed iron (6) and its front end is connected to the valve core (3), and its rear end is connected to the moving iron (5). When both the first coil (1s) and the second coil (2s) are de-energized, the valve core (3) is in the middle position of the valve sleeve (2) under the action of the spring (4), and the oil inlet (25), the first working oil port (22) and the second working oil port (24) are all closed, and the axial oil port (21) and the return oil port (231) are connected through the second oil hole (32); When the first coil (1s) is energized and the second coil (2s) is de-energized, the moving iron (5) moves backward, the connecting rod (7) pulls the valve core (3) to move backward, the oil port of the second working chamber is closed, the oil inlet (25) is connected to the axial oil port (21) and is connected to the first working oil port (22) through the first oil hole (31), and is connected to the return oil port (231) through the second oil hole (32); When the first coil (1s) is de-energized and the second coil (2s) is energized, the moving iron (5) moves forward and pushes the valve core (3) forward through the connecting rod (7). The first working oil port (22) is closed, the oil inlet (25) is connected to the axial oil port (21) and is connected to the second working oil port (24) through the third oil hole (33), and is connected to the return oil port (231) through the second oil hole (32).

2. The three-position five-way electromagnetic reversing threaded cartridge valve according to claim 1, characterized in that... The front and rear ends of the connecting rod (7) are connected to the valve core (3) and the moving iron (5) by radially arranged rolled cylindrical pins (71).

3. The three-position five-way electromagnetic reversing threaded cartridge valve according to claim 1, characterized in that... The front end of the fixed iron (6) has a stepped part (61), and a gasket (41) is provided on the stepped part (61). The rear end of the valve core (3) is provided with a spring seat (42). The spring (4) is sleeved on the outer periphery of the connecting rod (7) and its front end abuts against the spring seat (42), and its rear end abuts against the gasket (41).

4. The three-position five-way electromagnetic reversing threaded cartridge valve according to claim 1, characterized in that... The first coil (1s) and the second coil (2s) are axially spaced on the outer periphery of the magnetic sleeve (1) and separated by a retaining ring (8).

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