CN211116884U - Valve seat type pilot stage cartridge electro-hydraulic reversing valve - Google Patents
Valve seat type pilot stage cartridge electro-hydraulic reversing valve Download PDFInfo
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- CN211116884U CN211116884U CN201921808245.1U CN201921808245U CN211116884U CN 211116884 U CN211116884 U CN 211116884U CN 201921808245 U CN201921808245 U CN 201921808245U CN 211116884 U CN211116884 U CN 211116884U
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Abstract
The utility model discloses a portal type pilot stage cartridge electro-hydraulic reversing valve, which comprises a framework component consisting of a magnetizer, a magnetism isolating ring and a framework seat; a coil is arranged on the sunken cylindrical surface at the periphery of the framework component, and a protective screw sleeve with a hollow interior is arranged at the periphery of the coil; a spring, an armature and a first electromagnetic valve seat are arranged in the framework assembly, a second round hole, a steel ball mounting hole and a third round hole are formed in the first electromagnetic valve seat, and a steel ball is arranged in the steel ball mounting hole; the left side surface of the armature is connected with a spring, and a push rod fixedly connected with the right side surface of the armature is connected with the steel ball; a second electromagnetic valve seat with an oil inlet hole at the center is arranged in the third round hole; when the coil is in a power-off state, the steel ball is partially embedded at the left end of the oil inlet hole; when the coil is in a power-on state, the steel ball is matched with the right end of the second round hole. The utility model adopts the plug-in mounting mode as a whole, has compact structure and small volume and is convenient to maintain; meanwhile, the magnetic valve has the characteristics of low possibility of damage and no leakage in a zero position state.
Description
Technical Field
The utility model belongs to the technical field of hydraulic transmission and control, a valve seat formula guide's level cartridge electricity liquid switching-over valve is related to.
Background
The electro-hydraulic reversing valve used in the hydraulic field is generally divided into a direct-acting type and a pilot-operated type, a direct-acting type electromagnetic valve directly drives a valve core by an electromagnet, the consumed electromagnet thrust is large, and the flow for controlling reversing is small; the electromagnetic valve with a pilot structure is also commonly called an electro-hydraulic reversing valve, the pilot stage of the electro-hydraulic reversing valve is a direct-acting electromagnetic valve, and power provided by the direct-acting electromagnetic valve drives a slide valve of the next stage to complete reversing. The power consumed by the reversing valve and the leakage amount in the constant value are equivalent to those of a conventional direct-acting electromagnetic valve, but the reversing valve is mounted in a superposition mode in terms of assembly form, and the size and the weight are relatively small.
Disclosure of Invention
The technical problem solved by the utility model is to provide a valve seat type pilot stage cartridge electro-hydraulic reversing valve, which adopts a plug-in mounting mode as a whole, has compact structure and small volume and is convenient to maintain; meanwhile, the magnetic valve has the characteristics of low possibility of damage and no leakage in a zero position state.
The utility model discloses a realize through following technical scheme:
a kind of valve seat type pilot stage cartridge electrohydraulic reversing valve, including the integral skeleton assembly formed by magnetizer, magnetic isolation ring and skeleton seat; a coil is arranged on a sunken cylindrical surface formed on the periphery of the framework component, and a protective screw sleeve with a hollow interior is arranged on the periphery of the coil;
three-stage step holes are sequentially formed in the framework assembly from left to right and are respectively provided with a spring, an armature and a first electromagnetic valve seat, the inner center of the first electromagnetic valve seat is sequentially provided with a first round hole, a second round hole, a steel ball mounting hole and a third round hole in a penetrating manner from left to right, and a steel ball is mounted in the steel ball mounting hole; the armature is slidably mounted in the second step hole, the left side surface of the armature is connected with a spring, and a push rod fixedly connected with the right side surface of the armature is connected with the steel ball;
a second electromagnetic valve seat and an oil filter are further arranged in the third round hole, and an oil inlet hole is formed in the second electromagnetic valve seat in a penetrating manner; when the coil is in a power-off state, the lower part of the steel ball is embedded at the left end of the oil inlet hole and keeps sealed when the push rod pushes rightwards; when the coil is in a power-on state, the steel ball is matched with the right end of the second round hole and keeps sealed under the pushing of the pressure of the oil liquid.
Further, the coil and the periphery of the framework component form a smooth cylindrical curved surface section, and a circular boss is arranged on the right side of the cylindrical curved surface section; the protection thread insert is sleeved on the cylindrical curved surface section and completely covers the periphery of the coil, and the protection thread insert is limited by the circular boss and the clamping ring.
Furthermore, the push rod consists of a push rod main body with a large diameter at the left end and a push rod end with a small diameter at the right end; the left end face of the push rod main body is arranged on the right side face of the armature in the middle.
Furthermore, the diameter of the first round hole is larger than that of the push rod main body, and the diameter of the second round hole is larger than that of the end head of the push rod; the steel ball mounting hole is a cube, and the length of the side of the steel ball mounting hole is greater than the diameter of the steel ball; the diameter of the third round hole is matched with that of the second electromagnetic valve seat;
an oil return hole and a control hole are radially formed in the first electromagnetic valve seat; the oil return hole is communicated with the first round hole, and the control hole is communicated with the steel ball mounting hole;
the mounting cylindrical surface at the left end of the first electromagnetic valve seat is nested in a second stepped hole in the framework component, and the mounting boss is fixedly mounted in a third stepped hole in the framework component; the push rod main body is matched with the first round hole, and the end of the push rod is matched with the second round hole.
Furthermore, the spring is installed in a first step hole in the framework assembly, the length of the spring is larger than the depth of the first step hole, and the spring is limited between the bottom surface of the first step hole and the left side surface of the armature and is always in a compression state.
Further, the oil filter is of a cylindrical shell structure with an opening at one end, the diameter of the peripheral curved surface of the oil filter is smaller than that of the third round hole, and the opening end of the oil filter is connected to the right end of the oil inlet hole of the second electromagnetic valve seat in the middle.
Compared with the prior art, the utility model discloses following profitable technological effect has:
first electromagnetism disk seat is pegged graft on the integral skeleton subassembly that comprises magnetizer, magnetism isolating ring and skeleton seat, and second electromagnetism disk seat is pegged graft in first electromagnetism disk seat, and the protection swivel nut is pegged graft on the cylinder curved surface section that coil and skeleton subassembly periphery formed, compares with prior art, the utility model discloses wholly adopt the mounting means of pegging graft, do not use the screw to connect, make the utility model discloses compact structure is small.
In order to solve the problem of zero position state leakage, a steel ball valve seat structure is adopted, belongs to a line sealing structure, and can effectively compensate and align automatically to reach a zero leakage state.
The periphery of the coil is provided with a protective threaded sleeve which is limited by a clamping ring. The protective screw sleeve not only ensures the matching installation of the framework component part, but also protects the coil from being collided and damaged by the outside.
The oil filter is arranged in front of the second electromagnetic valve seat, so that the reliability of the action of the steel ball can be effectively ensured; if the reversing valve is delayed in reversing, the oil filter can be detached and replaced, and the reversing performance is recovered.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the first solenoid valve seat;
wherein, 1 is the magnetizer, 2 is the magnetism isolating ring, 3 is the skeleton seat, 4 is the coil, 5 is the protection swivel nut, 6 is the rand, 7 is the spring, 8 is armature, 9 is first electromagnetism disk seat, 10 is the push rod, 11 is the steel ball, 12 is the sealing washer, 13 is second electromagnetism disk seat, 14 is the oil filter, 91 is the installation boss, 92 is the installation cylinder, 93 is first round hole, 94 is the second round hole, 95 is the steel ball mounting hole, 96 is the third round hole, 97 is the sealing washer mounting groove.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings, which are illustrative, but not limiting, of the invention and which show, by way of illustration and example, specific embodiments.
Referring to fig. 1 and 2, a sliding seat type pilot stage cartridge electro-hydraulic directional valve comprises an integral framework assembly consisting of a magnetizer 1, a magnetism isolating ring 2 and a framework seat 3; a coil 4 is arranged on a concave cylindrical surface formed on the periphery of the framework component, and a protective screw sleeve 5 with a hollow inner part is arranged on the periphery of the coil 4;
three-stage step holes are sequentially formed in the framework assembly from left to right, a spring 7, an armature 8 and a first electromagnetic valve seat 9 are respectively installed on the three-stage step holes, a first round hole 93, a second round hole 94, a steel ball installation hole 95 and a third round hole 96 are sequentially formed in the center of the first electromagnetic valve seat 9 in a penetrating mode from left to right, and a steel ball 11 is installed in the steel ball installation hole 95; the armature 8 is slidably mounted in the second step hole, the left side surface of the armature 8 is connected with a spring 7, and a push rod 10 fixedly connected with the right side surface is connected with a steel ball 11;
a second electromagnetic valve seat 13 and an oil filter 14 are also arranged in the third round hole 96, and an oil inlet hole is formed in the second electromagnetic valve seat 13 in a penetrating manner; when the coil 4 is in a power-off state, the lower part of the steel ball 11 is embedded at the left end of the oil inlet hole and keeps sealed when the push rod 10 pushes rightwards; when the coil 4 is in the energized state, the steel ball 11 is pushed by the pressure of the oil to be matched with the right end of the second round hole 94 and keep sealed.
Specifically, the coil 4 and the periphery of the framework component form a smooth cylindrical curved surface section, and a circular boss is arranged on the right side of the cylindrical curved surface section; the protection thread insert 5 is sleeved on the cylindrical curved surface section and completely covers the periphery of the coil 4, and the protection thread insert 5 is limited by the circular boss and the clamping ring 6.
Specifically, the push rod 10 is composed of a push rod main body with a large diameter at the left end and a push rod end with a small diameter at the right end; the left end face of the push rod main body is arranged on the right side face of the armature 8 in the center.
Specifically, the diameter of the first circular hole 93 is larger than that of the push rod main body, and the diameter of the second circular hole 94 is larger than that of the end of the push rod; the steel ball mounting hole 95 is a cube, and the length of the side is greater than the diameter of the steel ball 11; the diameter of the third round hole 96 is matched with that of the second electromagnetic valve seat 13;
an oil return hole 98 and a control hole 99 are radially formed in the first electromagnetic valve seat 9; the oil return hole 98 is communicated with the first round hole 93, and the control hole 99 is communicated with the steel ball mounting hole 95;
the mounting cylindrical surface 92 at the left end of the first electromagnetic valve seat 9 is nested in a second stepped hole in the framework component, and the mounting boss 91 is fixedly mounted in a third stepped hole in the framework component; the main body of the push rod is matched with the first round hole 93, and the end of the push rod is matched with the second round hole 94.
Specifically, the spring 7 is installed in a first stepped hole in the framework component, the length of the spring 7 is larger than the depth of the first stepped hole, and the spring 7 is limited between the bottom surface of the first stepped hole and the left side surface of the armature 8 and is always in a compressed state.
Specifically, the oil filter 14 is a cylindrical shell structure with an opening at one end, the diameter of the peripheral curved surface of the oil filter is smaller than that of the third round hole 96, and the opening end of the oil filter 14 is connected to the right end of the oil inlet of the second electromagnetic valve seat 13 in the center.
Example 1
When the coil 4 is in a power-off state, the armature 8 is subjected to a rightward acting force of the spring 7 to drive the push rod 10 to move rightward, the end head of the push rod 10 pushes the steel ball 11, the steel ball 11 is matched with the left end of the oil inlet of the second electromagnetic valve seat 13 and keeps sealed, and the oil return hole 98 is communicated with the control hole 99;
when the coil 4 is in a power-on state, the armature 8 receives a leftward acting force of the magnetic field to further compress the spring 7 and drive the push rod 10 to move leftward, the end of the push rod 10 is separated from the steel ball 11, the steel ball 11 is matched with the right end of the second round hole 94 under the pushing of the pressure of the oil liquid and keeps sealed, and the oil inlet is communicated with the control hole 99.
The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical features of the technical solution of the present invention by those skilled in the art all belong to the protection scope of the present invention.
Claims (6)
1. A valve seat type pilot stage cartridge electro-hydraulic reversing valve is characterized by comprising an integral framework component, a valve seat and a valve seat, wherein the integral framework component is composed of a magnetizer (1), a magnetism isolating ring (2) and a framework seat (3); a coil (4) is arranged on a concave cylindrical surface formed on the periphery of the framework component, and a protective screw sleeve (5) with a hollow inner part is arranged on the periphery of the coil (4);
three-stage step holes are sequentially formed in the framework assembly from left to right, a spring (7), an armature (8) and a first electromagnetic valve seat (9) are respectively installed on the three-stage step holes, a first round hole (93), a second round hole (94), a steel ball installation hole (95) and a third round hole (96) are sequentially formed in the center of the interior of the first electromagnetic valve seat (9) in a penetrating mode from left to right, and a steel ball (11) is installed in the steel ball installation hole (95); the armature (8) is slidably mounted in the second step hole, the left side surface of the armature (8) is connected with a spring (7), and a push rod (10) fixedly connected with the right side surface is connected with a steel ball (11);
a second electromagnetic valve seat (13) and an oil filter (14) are further arranged in the third round hole (96), and an oil inlet hole is formed in the second electromagnetic valve seat (13) in a penetrating manner; when the coil (4) is in a power-off state, the lower part of the steel ball (11) is embedded in the left end of the oil inlet hole under the rightward pushing action of the push rod (10) and keeps sealed; when the coil (4) is in an electrified state, the steel ball (11) is matched with the right end of the second round hole (94) under the pushing of the pressure of the oil liquid and keeps sealed.
2. The poppet type pilot-stage cartridge electro-hydraulic directional control valve according to claim 1, characterized in that the coil (4) and the outer periphery of the skeleton assembly form a smooth cylindrical curved surface section, and a circular boss is arranged on the right side of the cylindrical curved surface section; the protection thread insert (5) is sleeved on the cylindrical curved surface section and completely covers the periphery of the coil (4), and the protection thread insert (5) is limited by the circular boss and the clamping ring (6).
3. The valve seat type pilot stage cartridge electro-hydraulic reversing valve according to claim 1, wherein the push rod (10) consists of a push rod main body with a large diameter at the left end and a push rod end with a small diameter at the right end; the left end face of the push rod main body is arranged on the right side face of the armature (8) in the middle.
4. The poppet electro-hydraulic directional control valve of claim 3, wherein the diameter of the first round hole (93) is larger than that of the push rod main body, and the diameter of the second round hole (94) is larger than that of the end of the push rod; the steel ball mounting hole (95) is a cube, and the length of the side of the steel ball mounting hole is greater than the diameter of the steel ball (11); the diameter of the third round hole (96) is matched with that of the second electromagnetic valve seat (13);
an oil return hole (98) and a control hole (99) are radially formed in the first electromagnetic valve seat (9); the oil return hole (98) is communicated with the first round hole (93), and the control hole (99) is communicated with the steel ball mounting hole (95);
the mounting cylindrical surface (92) at the left end of the first electromagnetic valve seat (9) is nested in a second stepped hole in the framework component, and the mounting boss (91) is fixedly mounted in a third stepped hole in the framework component; the push rod main body is matched with the first round hole (93), and the end of the push rod is matched with the second round hole (94).
5. The poppet electrohydraulic reversing valve of claim 1, wherein the spring (7) is mounted in a first stepped hole in the framework component, the length of the spring (7) is greater than the depth of the first stepped hole, and the spring (7) is limited between the bottom surface of the first stepped hole and the left side surface of the armature (8) and is always in a compressed state.
6. The poppet electrohydraulic reversing valve of claim 1, wherein the oil filter (14) is of a cylindrical shell structure with an open end, the diameter of a peripheral curved surface of the oil filter is smaller than that of a third round hole (96), and the open end of the oil filter (14) is connected to the right end of an oil inlet hole of the second electromagnetic valve seat (13) in the middle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921808245.1U CN211116884U (en) | 2019-10-25 | 2019-10-25 | Valve seat type pilot stage cartridge electro-hydraulic reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921808245.1U CN211116884U (en) | 2019-10-25 | 2019-10-25 | Valve seat type pilot stage cartridge electro-hydraulic reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211116884U true CN211116884U (en) | 2020-07-28 |
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ID=71701202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921808245.1U Active CN211116884U (en) | 2019-10-25 | 2019-10-25 | Valve seat type pilot stage cartridge electro-hydraulic reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211116884U (en) |
-
2019
- 2019-10-25 CN CN201921808245.1U patent/CN211116884U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A valve seat type pilot stage cartridge Electro-hydraulic Directional Valve Effective date of registration: 20201124 Granted publication date: 20200728 Pledgee: Xi'an Yongcheng Financing Guarantee Co., Ltd Pledgor: XI'AN KANGBEI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Registration number: Y2020980008378 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211217 Granted publication date: 20200728 Pledgee: Xi'an Yongcheng Financing Guarantee Co., Ltd Pledgor: XI'AN KANGBEI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Registration number: Y2020980008378 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |