CN219673464U - High-flow switch electromagnetic valve - Google Patents

Abstract

The utility model provides a high-flow switch electromagnetic valve which comprises a polar plate, a magnetic conduction sleeve and a valve sleeve which are coaxially and fixedly arranged in sequence, wherein an oil passing channel for communicating an oil inlet with an oil outlet is formed in the valve sleeve, a coil assembly is arranged on the periphery of the magnetic conduction sleeve, an armature is coaxially and slidably arranged in the magnetic conduction sleeve, a valve core is arranged at the lower end of the armature, the valve core is coaxially and slidably arranged in the valve sleeve, a spring is arranged between the upper part of the valve core and the lower end surface of the magnetic conduction sleeve, and the lower end of the valve core can be abutted against the inner wall of the valve sleeve to block the oil passing channel. The utility model adopts the moving component composed of the armature and the valve core to control the opening and closing of the valve port, thereby reducing the consumption of electromagnet materials.

Description

High-flow switch electromagnetic valve

Technical Field

The utility model belongs to the field of electromagnetic valves, and particularly relates to a high-flow switching electromagnetic valve.

Background

The electromagnetic valve is controlled, is an automatic basic element for controlling fluid, and belongs to an actuator. Solenoid valves can be used in conjunction with various circuits to achieve desired control, for use in industrial control systems to adjust the direction, speed, and other parameters of the medium. The structure of the prior art solenoid valve is seen in a solenoid valve (publication No. 217736440U) which is electromagnetically stabilized, and this patent discloses a solenoid valve design in which when the solenoid valve is energized, the armature moves upward against the spring force under the influence of the electromagnetic force, thereby opening the valve port and controlling the outflow of hydraulic oil. The armature and the valve core of the structure are the same part, and when the large flow rate is required, the diameter of the armature is increased to obtain a larger flow area, however, the design size of the electromagnet end is increased, and the cost of raw materials is greatly increased.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a high-flow switch electromagnetic valve which can meet the high-flow demand and does not need to increase or decrease the armature size of electromagnet materials.

The utility model provides a high-flow switch solenoid valve, includes the polar plate, magnetic conduction cover and the valve pocket of coaxial solid dress in proper order, and system has the oily passageway of crossing of intercommunication oil inlet and oil-out in the valve pocket, and coil block, its characterized in that are installed to magnetic conduction cover's periphery: an armature is coaxially and slidably arranged in the magnetic conduction sleeve, a valve core is arranged at the lower end of the armature, the valve core is coaxially and slidably arranged in the valve sleeve, a spring is arranged between the upper part of the valve core and the lower end surface of the magnetic conduction sleeve, and the lower end of the valve core can be abutted against the inner wall of the valve sleeve to block an oil passing channel.

Through adopting above-mentioned technical scheme, the armature is two parts that different materials were made with the case, and the armature keeps synchronous motion with the case connection, and the armature in the magnetic conduction cover receives magnetic force to the polar plate direction motion when the circular telegram to drive the case and remove, open or block the circulation of hydraulic oil, the case diameter is bigger than the armature diameter, satisfies the work demand of big flux solenoid valve, and does not need a large amount of electro-magnet materials that increase the preparation armature required, reduce cost when guaranteeing product functional effect.

Preferably, a pull rod is connected and installed between the armature and the valve core, the upper end of the pull rod is fixedly arranged at the lower end of the armature, and the lower end of the pull rod penetrates through a mounting hole at the upper end of the valve core to be in limit connection with the valve core.

Through adopting above-mentioned technical scheme, armature, pull rod and case connect into an organic whole motion subassembly, and the pull rod structure is convenient for be connected case and armature, and the spacing installation of pull rod lower extreme protruding head is in the case, and the tip of pull rod is fixed in the armature, connects reliably.

Preferably, the pull rod and the armature are connected by adopting an interference fit, welding or a bolt structure.

By adopting the technical scheme, the pull rod and the armature are fixedly arranged in a plurality of ways, and the pull rod and the armature are selected according to actual processing conditions, so that firm connection between the railing and the armature is ensured.

Preferably, the clearance between the valve core and the pull rod is larger than the clearance between the armature and the magnetic conduction sleeve, and the clearance between the valve core and the pull rod is larger than the clearance between the valve core and the valve sleeve.

Through adopting above-mentioned technical scheme, the clearance between case and the pull rod makes both can remain great can rock the surplus, and the clearance volume between armature and the magnetic conduction cover, and the clearance volume between case and the valve pocket is all than less, and in the upper and lower removal like this, the frictional force between the structural plane of mutual contact is little, less holistic frictional resistance, also reduces the friction damage between the part, promotes the durability of part.

Preferably, the valve core and the valve sleeve form clearance fit sealing or dynamic seal fit; a spring cavity is formed between the upper end of the valve core and the inner wall of the valve sleeve, and a spring is arranged in the spring cavity; the valve core is internally provided with a cavity communicated with the lower oil passage, the cavity in the valve core is communicated with the oil passage in the valve sleeve, the upper part of the valve core is provided with an oil passing port, and the oil passing port is communicated with the oil cavity and the spring cavity.

By adopting the technical scheme, the spring cavity is communicated with the oil cavity formed by the cavity in the valve core, and the same hydraulic pressure is kept at the inner side, the outer side, the upper side and the lower side of the valve core.

Preferably, one or more oil passing grooves penetrating through two ends of the armature (5) are formed in the armature (5), a top oil cavity is formed in a gap between the armature (5) and the pole disc (1), and the oil passing grooves are communicated with the spring cavity and the top oil cavity.

Through adopting above-mentioned technical scheme, cross the clearance space between oil groove increase armature outer wall and the magnetic conduction cover inner wall, the hydraulic oil of armature lower extreme and upper end can communicate, and hydraulic oil flow is smooth, forms the top oil pocket at the armature upper end, and the pressure balance of armature upper and lower end. Thus, the top oil cavity, the spring cavity and the valve core inner cavity are mutually communicated, hydraulic oil can flow in the top oil cavity, the spring cavity and the valve core inner cavity, and the top oil cavity, the spring cavity and the valve core inner cavity are all of equal pressure, so that the hydraulic oil pressure born by the armature and the valve core at the two axial ends is always balanced.

Preferably, the oil passing groove is provided inside the armature or provided at an outer circumferential surface of the armature.

Through adopting above-mentioned technical scheme, cross the oil groove both can process outside the armature, also can make inside the armature, selects suitable processing position according to the armature size.

Preferably, a housing is mounted between the pole plate and the valve sleeve outside the coil assembly.

By adopting the technical scheme, the shell completely seals the coil assembly, so that the safety is ensured.

Preferably, a plurality of oil inlets are formed in the periphery of the lower portion of the valve sleeve at radial intervals, an oil outlet is formed in the middle of the lower end of the valve sleeve, an annular valve seat surface is formed in the position, close to the oil outlet, inside the valve sleeve, or the valve seat is pressed into the valve seat to form valve port sealing with the valve core, and the valve port sealing surface is a conical surface or a plane.

Through adopting above-mentioned technical scheme, the oil inlet pipe of different directions can be connected to the valve pocket, and the oil-out sets up in the cover bottom, and the disk seat structure is coaxial with the case, reciprocates better realization through the motion subassembly and crosses the switching control of oily passageway.

A fixing structure is arranged on one radial side of the lower part of the magnetic conduction sleeve, and two sealing rings are arranged on the periphery of the valve sleeve at intervals up and down.

Through adopting above-mentioned technical scheme, the fixed knot of solenoid valve constructs with magnetic conduction cover an organic whole and makes, less part quantity, compact structure, and integrated structure is more stable in addition makes the solenoid valve installation more firm reliable, reduces part quantity structure, makes overall structure more compact, and the sealing washer can guarantee the leakproofness between solenoid valve and the external mounting spare.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the utility model adopts the moving component composed of the armature and the valve core to control the opening and closing of the valve port, thereby reducing the consumption of electromagnet materials.

2. According to the technical scheme, through designing the clearance allowance among the pull rod, the valve core and the valve sleeve, the centering problem among the movable surfaces is avoided, the friction force among the internal structures in the working process is reduced, the movement is more flexible, and the durability of the component is improved.

3. The hydraulic pressure balance that motion subassembly of the technical scheme of the utility model received, the motion resistance is less, compact and small in overall structure.

Drawings

Fig. 1 is a schematic overall outline of the present utility model.

Fig. 2 is a B-B cross-sectional view of fig. 1.

Fig. 3 is a cross-sectional view of another embodiment valve sleeve and valve core portion.

Fig. 4 is a cross-sectional view of another embodiment valve sleeve and valve core portion.

Fig. 5 is a cross-sectional view of another embodiment valve sleeve and valve core portion.

Fig. 6 is a schematic cross-sectional structure of the armature.

Fig. 7 is a schematic cross-sectional view of an armature structure of another embodiment.

Fig. 8 is a schematic diagram of a connection structure of the connecting rod and the armature.

Fig. 9 is a schematic diagram of a connection structure of a connecting rod and an armature according to another embodiment.

Reference numerals:

1. a pole plate; 2. a housing; 3. a valve sleeve; 31. an oil inlet; 32. an oil outlet; 4. a coil assembly; 5. an armature; 51. a blind hole; 52. passing through an oil groove; 6. a pull rod; 7. a magnetic conduction sleeve; 8. a spring; 9. a valve core; 91. a mounting hole; 92. an oil port is crossed; 93. a valve core inner cavity; 94. an O-ring; 10. a seal ring; 11. a valve seat.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The high-flow switch electromagnetic valve comprises a pole disc 1, a magnetic conduction sleeve 7, a valve sleeve 3, an armature 5, a valve core 9 and a spring 8, wherein the magnetic conduction sleeve 7 is coaxially arranged at the lower end of the pole disc 1, the valve sleeve 3 is coaxially fixedly arranged at the lower end of the magnetic conduction sleeve 7, and an oil inlet 31, an oil outlet 32 and an oil passing channel are formed in the valve sleeve 3;

the armature 5 is coaxially and slidably mounted in the magnetic sleeve 7, the lower end of the armature 5 is fixedly connected with the upper end of the pull rod 6, in this embodiment, the upper end of the pull rod 6 is mounted in a blind hole in the middle of the lower end of the armature 5 in an interference fit manner (see fig. 8), and the pull rod can be fixed at the lower end of the armature 5 in a welding manner or is mounted in a blind hole 51 of the armature 5 in a threaded connection manner (see fig. 9). The lower end of the pull rod 6 is limited and installed in a valve core 9, the valve core 9 is coaxially and slidably installed in a valve sleeve 3, the valve core and the valve sleeve form clearance fit sealing, or an O-shaped ring 94 is installed in the middle of the periphery of the valve core to enable the valve core and the valve sleeve to form dynamic seal fit; the armature 5, the pull rod 6 and the valve core 9 form a moving assembly; a spring 8 is arranged between the upper part of the valve core 9 and the lower end surface of the magnetic conduction sleeve 7, the spring 8 keeps pretightening force, the lower end of the valve core 9 is pushed to abut against the inner wall of the lower part of the valve sleeve 3 to form a sealing surface, and an oil passing channel in the valve sleeve 3 is blocked.

The lower periphery of the valve sleeve 3 is radially provided with a plurality of oil inlets 31 at intervals, the middle part of the lower end of the valve sleeve 3 is provided with an oil outlet 32, the position, close to the oil outlet 32, inside the valve sleeve 3 is provided with an annular valve seat surface, the valve seat surface can be abutted with the valve core 9 to form an annular sealing surface for blocking an oil passing channel inside the valve sleeve 3, the annular sealing surface in the embodiment is of a conical surface structure (shown in fig. 2 or 3), and the annular sealing surface can also be designed into a planar sealing structure (shown in fig. 4) or pressed into an additional valve seat 11 for sealing (shown in fig. 5).

The coil assembly 4 is installed on the periphery of the magnetic conduction sleeve 7, the shell 2 is installed between the pole disc 1 and the valve sleeve 3 outside the coil assembly 4, the internal structure is protected, and the coil assembly 4 is connected with a power supply through a plug connector. When the power is on, magnetic force is generated to attract the armature 5 to move towards the direction of the polar plate 1, the resistance of the spring 8 is overcome, and the valve core 9 is driven to move upwards to open an oil passing channel between the oil inlet 31 and the oil outlet 32; when the electromagnetic valve is powered off, the valve core 9 is extruded by the spring 8, and the whole motion assembly is driven to move downwards, so that the oil passing channel is closed.

The center of the upper end of the valve core 9 is provided with a mounting hole 91, the inner diameter of the mounting hole 91 is larger than the outer diameter of the pull rod 6, and in order to prevent the problem that the components are not coaxial in sliding from affecting the work, the clearance a between the valve core 9 and the pull rod 6 is larger than the clearance b between the armature 5 and the magnetic conduction sleeve 7; moreover, the clearance a between the valve core 9 and the pull rod 6 is larger than the clearance c between the valve core 9 and the valve sleeve 3, so that the friction force during the operation of the electromagnetic valve is reduced, and the overall durability is improved.

The valve core 9 is of a cylindrical structure, a spring cavity is formed between the upper end of the valve core 9 and the inner wall of the valve sleeve 3, the shape of the upper part of the valve core 9 is not limited, the upper part of the valve core 9 can be an annular stepped groove (see fig. 4 and 5) or a planar structure (see fig. 3), a spring 8 is arranged in the spring cavity, and two ends of the spring 8 are respectively abutted against the axial end faces of the magnetic conduction sleeve 7 and the valve core 9; the valve core 9 is internally provided with a cavity with an opening at the lower end, the cavity penetrates through the upper part and the lower part of the valve core, the cavity is communicated with an oil passing channel in the valve sleeve 3, the upper part of the valve core 9 is provided with an oil passing port 92, the oil passing port 92 can be communicated with the cavity and a spring cavity in the valve core, the oil passing port can be radially arranged (see fig. 4 and 5), can also be axially arranged (see fig. 3), and the oil passing port can be in any shape.

The armature 5 has a cylindrical structure, one or more oil passing grooves 52 (see fig. 6) penetrating through two ends of the armature 5 are formed at radial intervals on the periphery of the armature 5, or one or more oil passing grooves 52 (see fig. 7) are formed in the armature 5, and a top oil cavity is formed in a gap between the armature 5 and the pole disc 1 and is communicated with the spring 8 cavity and the top oil cavity.

The top oil cavity, the spring 8 cavity and the inner cavity of the valve core 9 are mutually communicated, hydraulic oil can flow in the top oil cavity, the spring 8 cavity and the inner cavity of the valve core 9, the top oil cavity, the spring 8 cavity and the inner cavity of the valve core 9 are all of equal pressure, so that the hydraulic oil pressure born by the armature 5 and the valve core 9 at two axial ends is always balanced, only the small resistance of the spring 8 is overcome to do work, and therefore the small spring 8 can be selected, the volume is further reduced, and the structure is compact.

The radial side of the lower part of the magnetic conduction sleeve 7 is provided with a fixed structure, so that the structure is more stable and reliable, and the number of parts is reduced and the structure is more compact.

Two sealing rings 10 are arranged at the upper and lower intervals on the periphery of the valve sleeve 3, so that the tightness between the electromagnetic valve and an external mounting part is ensured.

The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, for the purposes of describing the present utility model, and is to be construed as limited only by the appended claims.

Claims (10)

1. The utility model provides a high-flow switch solenoid valve, includes polar plate (1), magnetic conduction cover (7) and valve pocket (3) of coaxial solid dress in proper order, and system has the oily passageway of crossing of intercommunication oil inlet (31) and oil-out (32) in valve pocket (3), and coil pack (4), its characterized in that are installed to the periphery of magnetic conduction cover (7): an armature (5) is coaxially and slidably arranged in the magnetic conduction sleeve (7), a valve core (9) is arranged at the lower end of the armature (5), the valve core (9) is coaxially and slidably arranged in the valve sleeve (3), a spring (8) is arranged between the upper part of the valve core (9) and the lower end face of the magnetic conduction sleeve (7), and the lower end of the valve core (9) can be abutted against the inner wall of the valve sleeve (3) to block an oil passing channel.

2. The high-flow switching solenoid valve according to claim 1, wherein: a pull rod (6) is connected and installed between the armature (5) and the valve core (9), the upper end of the pull rod (6) is fixedly arranged at the lower end of the armature (5), and the lower end of the pull rod (6) penetrates through a mounting hole (91) at the upper end of the valve core (9) to be in limit connection with the valve core (9).

3. The high-flow switching solenoid valve according to claim 2, wherein: the pull rod is connected with the armature through interference fit, welding or a bolt structure.

4. The high-flow switching solenoid valve according to claim 1, wherein: the clearance between the valve core (9) and the pull rod (6) is larger than the clearance between the armature (5) and the magnetic conduction sleeve (7), and the clearance between the valve core (9) and the pull rod (6) is larger than the clearance between the valve core (9) and the valve sleeve (3).

5. The high-flow switching solenoid valve according to claim 1, wherein: the valve core (9) and the valve sleeve (3) form clearance fit sealing or dynamic seal fit; a spring cavity is formed between the upper end of the valve core (9) and the inner wall of the valve sleeve (3), and a spring (8) is arranged in the spring cavity; the valve core (9) is internally provided with a cavity communicated with the lower oil passage, the cavity in the valve core is communicated with the oil passage in the valve sleeve (3), the upper part of the valve core (9) is provided with an oil passing port (92), and the oil passing port (92) is communicated with the oil cavity and the spring cavity.

6. The high-flow switching solenoid valve according to claim 1, wherein: one or more oil passing grooves penetrating through two ends of the armature (5) are formed in the armature (5), a top oil cavity is formed in a gap between the armature (5) and the pole disc (1), and the oil passing grooves are communicated with the spring cavity and the top oil cavity.

7. The high-flow switching solenoid valve according to claim 6, wherein: the oil passing groove is provided inside the armature (5) or on the outer peripheral surface of the armature.

8. The high-flow switching solenoid valve according to claim 1, wherein: a shell (2) is arranged between the pole disc (1) outside the coil assembly (4) and the valve sleeve (3).

9. The high-flow switching solenoid valve according to claim 1, wherein: the valve sleeve (3) is characterized in that a plurality of oil inlets (31) are formed in the lower periphery of the valve sleeve (3) at radial intervals, an oil outlet (32) is formed in the middle of the lower end of the valve sleeve (3), an annular valve seat surface is formed in the valve sleeve (3) at a position close to the oil outlet (32), or the valve seat (11) is pressed into the valve seat to form valve port sealing with the valve core, and the valve port sealing surface is a conical surface or a plane.

10. The high-flow switching solenoid valve according to claim 1, wherein: a fixed structure is arranged on one radial side of the lower part of the magnetic conduction sleeve (7), and two sealing rings (10) are arranged on the periphery of the valve sleeve (3) at intervals up and down.