Three-position five-way electromagnetic directional valve

Abstract

The utility model relates to a three-position five-way electromagnetic reversing valve which comprises a valve sleeve, a valve element sliding up and down is arranged in the valve sleeve, the upper side of the valve sleeve is in threaded connection with a valve seat, a flux sleeve is in threaded connection with the interior of the valve seat, the inner curved surface of the flux sleeve is fixedly connected with fixed iron, and the tail end of the fixed iron extends into the valve seat. The end, away from the valve seat, of the flux sleeve is fixedly connected with a base. Moving iron is connected in the flux sleeve in an up-and-down sliding mode, a conical head is integrally formed at the tail end of the upper side of the moving iron, a buffer groove corresponding to the conical head is formed in the base, and the locating pin and the abutting groove are both conical, so that the contact area between the locating pin and the abutting groove is increased, and the locating pin and the abutting groove are not prone to falling off. According to the three-position five-way electromagnetic reversing valve, the valve element is arranged in the valve body, so that impact force generated when the valve element makes contact with the valve body can be effectively reduced, oscillation of the valve element is avoided, the structural stability of the three-position five-way electromagnetic reversing valve is guaranteed, the valve element and other parts are prevented from being damaged due to collision, and the service life of the three-position five-way electromagnetic reversing valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to an electromagnetic reversing valve, in particular to a three-position five-way electromagnetic reversing valve. BACKGROUND

[0002] An electromagnetic reversing valve is a valve that uses electromagnetic force to control the flow direction of a fluid, such as a liquid or a gas. It is widely used in hydraulic systems and pneumatic systems to control the movement direction of an actuator, such as a hydraulic cylinder, a hydraulic motor, a pneumatic cylinder, etc.

[0003] A coil is usually provided on the electromagnetic reversing valve. By energizing the coil to generate a magnetic field, the valve core assembly is driven to move. If the magnetic force generated by the coil is too large, the moving iron in the valve core assembly is easy to be worn or damaged due to collision during movement, thereby affecting the control effect of the electromagnetic reversing valve.

[0004] In view of the above problems, we propose a three-position five-way electromagnetic reversing valve. INVENTION CONTENTS

[0005] The utility model discloses a three-position five-way electromagnetic reversing valve, solve the above -mentioned problems in the process of using in the prior art.

[0006] The technical scheme of the utility model is realized as follows: a three-position five-way electromagnetic reversing valve, comprising a valve sleeve, a valve core sliding up and down is arranged in the valve sleeve, a valve seat is fixedly connected to the upper side of the valve sleeve, a magnetically conductive sleeve is threadedly connected in the valve seat, an electromagnetic mechanism is arranged outside the magnetically conductive sleeve, a fixed iron with an end extending into the valve seat is fixedly connected to the inner curved surface of the magnetically conductive sleeve, and a base is fixedly connected to the end of the magnetically conductive sleeve away from the valve seat.

[0007] A moving iron is slidingly connected in the magnetically conductive sleeve, an upper conical head is integrally formed at the upper end of the moving iron, a buffer groove corresponding to the upper conical head is formed in the base, and the upper conical head is inserted into the buffer groove.

[0008] An activity groove is formed in the fixed iron, a connecting rod is slidingly connected in the activity groove, and the connecting rod is fixedly connected to the lower side of the moving iron.

[0009] A second buffer mechanism is arranged between the lower end of the moving iron and the magnetically conductive sleeve.

[0010] An elastic reset mechanism is arranged between the fixed iron and the valve core.

[0011] The utility model further provides that: the second buffer mechanism comprises a lower conical head, and the lower conical head is located at the lower end of the moving iron.

[0012] The upper end of the connecting rod is fixedly connected with a positioning pin, and the positioning pin is fixed between the lower conical head and the moving iron;

[0013] The upper side of the fixed iron is provided with a groove corresponding to the lower conical head.

[0014] The electromagnetic mechanism comprises a first coil and a second coil, and the first coil and the second coil are wound on the magnetic conducting sleeve.

[0015] The further setting of the utility model is that a traveling cavity is arranged between the fixed iron and the valve core, the upper end of the valve core is fixedly connected with an elastic cylindrical pin, and the lower end of the connecting rod extends into the elastic cylindrical pin.

[0016] The further setting of the utility model is that the reset mechanism comprises a reset spring.

[0017] The inner wall of the traveling cavity is slidably connected with a moving ring on the upper side, and the moving ring is slidably connected on the outer curved surface of the connecting rod.

[0018] The inner wall of the traveling cavity is slidably connected with a gasket on the upper side, and the reset spring is connected between the moving ring and the gasket.

[0019] The further setting of the utility model is that a limiting groove is formed on the connecting rod, and the gasket is slidably connected in the limiting groove.

[0020] The further setting of the utility model is that the threaded connection part of the magnetic conducting sleeve and the valve seat is coated with a thread sealing glue.

[0021] The utility model has the advantages of:

[0022] The shapes of the positioning pin and the resisting groove are both conical, so that the contact area between the two is increased, the impact force generated when the two are in contact can be effectively reduced, the valve core oscillation can be avoided, the structural stability of the three-position five-way electromagnetic directional valve can be ensured, the valve core and other components can be prevented from being damaged due to collision, and the service life of the three-position five-way electromagnetic directional valve can be prolonged.

[0023] In addition, the shapes of the upper conical head and the buffer groove are also conical, so that the contact area between the two is larger, the impact force generated when the two are in contact can be further reduced, the valve core oscillation can be avoided, and the structural stability of the three-position five-way electromagnetic directional valve can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 It is a whole structure schematic diagram of the present application.

[0026] Figure 2 It is Figure 1 It is a local enlarged schematic diagram of A in the middle.

[0027] Figure 3 It is Figure 1 It is a local enlarged schematic diagram of B in the middle.

[0028] Figure 4 It is Figure 1 It is a local enlarged schematic diagram of C in the middle.

[0029] In the drawing, 11 is a valve sleeve, 12 is a valve core, 13 is a valve seat, 14 is a magnetic sleeve, 15 is a fixed iron, 16 is a base, 17 is a moving iron, 18 is an upper conical head, 19 is a buffer groove, 20 is a movable groove, 21 is a connecting rod, 22 is a lower conical head, 23 is a positioning pin, 24 is a groove, 25 is a No.1 coil, 26 is a No.2 coil, 27 is a running cavity, 28 is an elastic cylindrical pin, 29 is a moving ring, 30 is a limiting groove, 31 is a reset spring, and 32 is a washer. DETAILED DESCRIPTION

[0030] The following will combine the drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Figures 1-4 It is obvious that the described embodiments only constitute some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0031] EMBODIMENT

[0032] For example Figures 1 to 4As shown, a three-position five-way electromagnetic reversing valve, comprising a valve sleeve 11, a plurality of flow channels are formed on the valve sleeve 11, a valve core 12 sliding up and down is arranged in the valve sleeve 11, a plurality of hole positions are formed on the valve core 12, a valve seat 13 is fixedly connected to the upper side of the valve sleeve 11, a magnetism guide sleeve 14 is threadedly connected in the valve seat 13, and the threaded connection between the valve seat 13 and the magnetism guide sleeve 14 is coated with a thread sealing glue, so as to ensure the sealing between the valve seat 13 and the magnetism guide sleeve 14, and avoid fluid leakage from the connection between the two.

[0033] A fixed iron 15 extending into the valve seat 13 is fixedly connected to the inner curved surface of the magnetism guide sleeve 14, a moving iron 17 sliding up and down is arranged in the magnetism guide sleeve 14, a movable groove 20 is formed in the fixed iron 15, a connecting rod 21 for pushing the valve core 12 to move downward is slidingly connected in the movable groove 20, and the connecting rod 21 is fixedly connected to the lower side of the moving iron 17, the up and down positions of the valve core 12 are changed through the connecting rod 21, so as to achieve the purpose of fluid reversing in the valve core 12.

[0034] A first coil 25 and a second coil 26 are respectively wound on the magnetism guide sleeve 14, different magnetic fields are generated by energizing the first coil 25 or the second coil 26, the connecting rod 21 moves up and down through magnetic force, so that the hole positions of the valve core 12 are aligned with different flow channels on the valve sleeve 11, and the flow direction of the fluid is changed.

[0035] As shown in the figure, Figure 3 The specific connection mode of the connecting rod 21 and the moving iron 17 is that a lower conical head 22 is arranged at the lower end of the moving iron 17, a positioning pin 23 is fixedly connected to the upper end of the connecting rod 21, and the positioning pin 23 is fixed between the lower conical head 22 and the moving iron 17, through the above structure, the moving iron 17 and the connecting rod 21 can drive each other to move up and down;

[0036] In addition, a groove 24 corresponding to the lower conical head 22 is formed on the upper side of the fixed iron 15, when the fixed iron 15 drives the connecting rod 21 to move downward to the maximum stroke, the lower conical head 22 abuts in the groove 24, since the lower conical head 22 and the groove 24 are both conical, the contact area between the two is increased, so as to effectively reduce the impact force generated when the two are in contact, avoid the valve core 12 from oscillating, ensure the structural stability of the three-position five-way electromagnetic reversing valve, avoid the valve core 12 and other components from being damaged due to collision, so as to prolong the service life of the three-position five-way electromagnetic reversing valve.

[0037] In addition, as shown in the figure, Figure 2As shown, the magnetic sleeve 14 is fixedly connected to a base 16 at one end away from the valve seat 13. The upper end of the moving iron 17 is integrally formed with an upper conical head 18. The base 16 has a buffer groove 19 corresponding to the upper conical head 18. When the moving iron 17 moves upward to its maximum stroke, the upper conical head 18 abuts against the buffer groove 19. Since both the upper conical head 18 and the buffer groove 19 are conical, the contact area between them is larger, thereby reducing the impact force generated when they come into contact. This further prevents the valve core 12 from oscillating, ensuring the structural stability of the three-position five-way solenoid directional valve, preventing the valve core 12 and other components from being damaged by collision, and extending the service life of the three-position five-way solenoid directional valve.

[0038] like Figure 4 As shown, a travel cavity 27 for the connecting rod 21 to move is provided between the fixed iron 15 and the valve core 12. The specific connection method between the connecting rod 21 and the valve core 12 is as follows: an elastic cylindrical pin 28 is fixedly connected to the upper end of the valve core 12, and the lower end of the connecting rod 21 is fixedly connected to the elastic cylindrical pin 28. The connecting rod 21 moves downward and drives the valve core 12 to move downward together until the connecting rod 21 drives the valve core 12 to move downward to the maximum stroke.

[0039] A movable ring 29 and a washer 32 are slidably connected vertically within the travel cavity 27. The movable ring 29 is located below the washer 32. A return spring 31 is connected between the movable ring 29 and the washer 32. A limiting groove 30 is provided on the connecting rod 21. The washer 32 is slidably connected to the limiting groove 30. When the valve core 12 is in the neutral position, the washer 32 abuts against the limiting groove 30 and the upper edge of the travel cavity 27. The movable ring 29 abuts against the upper edge of the elastic cylindrical pin 28 and the lower edge of the step of the travel cavity 27.

[0040] When the moving iron 17 drives the connecting rod 21 to move downward under the drive of the magnetic field, the washer 32 moves downward with the driving rod 21 and compresses the return spring 31 downward, so that the return spring generates an upward driving force. When the magnetic force disappears, the connecting rod 21 moves upward with the upward driving force of the return spring 31, thereby driving the valve core 12 to return to the neutral position.

[0041] Similarly, when the moving iron 17 drives the connecting rod 21 to move upward by magnetic force, the moving ring 29 follows the connecting rod 21 to move upward and compresses the reset spring 31 upward, so that the reset spring 31 generates a downward driving force; when the magnetic force disappears, the connecting rod 21 moves downward by the downward driving force of the reset spring 31, thereby driving the valve core 12 to reset to the middle position, so that the three-position five-way electromagnetic reversing valve is closed, and fluid cannot flow out through the valve core 12.

[0042] Meanwhile, it needs to be pointed out that the terms indicated by the utility model, such as "front", "rear", "vertical", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for facilitating the description of the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the protection scope of the utility model.

[0043] The above only describes preferred embodiments of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A three-position five-way solenoid commutated valve comprising a valve housing (11), characterized in that: The valve sleeve (11) is provided with a valve core (12) sliding up and down, the upper side of the valve sleeve (11) is fixedly connected with a valve seat (13), the valve seat (13) is threadedly connected with a magnetic conducting sleeve (14), the magnetic conducting sleeve (14) is provided with an electromagnetic mechanism outside, the inner curved surface of the magnetic conducting sleeve (14) is fixedly connected with a fixed iron (15) extending into the valve seat (13), and one end of the magnetic conducting sleeve (14) away from the valve seat (13) is fixedly connected with a base (16). The magnetic conducting sleeve (14) is connected with a moving iron (17) sliding up and down, the upper end of the moving iron (17) is integrally formed with an upper conical head (18), and the base (16) is provided with a buffer groove (19) corresponding to the upper conical head (18). The fixed iron (15) is provided with a movable groove (20), and the movable groove (20) is connected with a connecting rod (21) sliding up and down. A second buffer mechanism is arranged between the lower end of the moving iron (17) and the magnetic conducting sleeve (14). An elastic reset mechanism is arranged between the fixed iron (15) and the valve core (12).

2. A three position five way solenoid commutated valve according to claim 1, characterized in that: The second buffer mechanism comprises a lower conical head (22) located at the lower end of the moving iron (17). The upper end of the connecting rod (21) is fixedly connected with a positioning pin (23) fixed between the lower conical head (22) and the moving iron (17). The upper side of the fixed iron (15) is provided with a groove (24) corresponding to the lower conical head (22).

3. A three position five way solenoid commutated valve according to claim 1 wherein: The electromagnetic mechanism comprises a first coil (25) and a second coil (26), and the first coil (25) and the second coil (26) are wound outside the magnetic conducting sleeve (14).

4. A three position five way solenoid commutated valve according to claim 1 wherein: The fixed iron (15) and the valve core (12) are provided with a travel cavity (27), the upper end of the valve core (12) is fixedly connected with an elastic cylindrical pin (28), and the lower end of the connecting rod (21) is fixedly connected in the elastic cylindrical pin (28).

5. A three position five way solenoid commutated valve according to claim 4 characterised in that: The reset mechanism comprises a reset spring (31). The inner wall of the travel cavity (27) is connected with a moving ring (29) sliding up and down, and the moving ring (29) is connected to the outer curved surface of the connecting rod (21) simultaneously. The inner wall of the travel cavity (27) is connected with a gasket (32) sliding up and down, and the reset spring (31) is connected between the moving ring (29) and the gasket (32).

6. A three position five way solenoid operated directional control valve according to claim 5 wherein: The connecting rod (21) is provided with a limiting groove (30), and the gasket (32) is connected in the limiting groove (30) sliding up and down.

7. A three position five way solenoid operated directional control valve as claimed in claim 1 wherein: The threaded connection between the magnetic conducting sleeve (14) and the valve seat (13) is coated with a threaded sealant.

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