CN212509745U - Pilot control valve - Google Patents
Pilot control valve Download PDFInfo
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- CN212509745U CN212509745U CN202021041037.6U CN202021041037U CN212509745U CN 212509745 U CN212509745 U CN 212509745U CN 202021041037 U CN202021041037 U CN 202021041037U CN 212509745 U CN212509745 U CN 212509745U
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Abstract
The utility model relates to a pilot control valve, which comprises a valve body component, wherein a coil component is sleeved outside the valve body component, a step hole is arranged in the valve body of the valve body component along the radial direction of the valve body component, an adjusting spring is positioned in the small-bore end of the step hole, and a movable iron core is positioned in the large-bore end of the step hole; a valve sleeve of the control valve component is connected with the valve body, a valve core is movably arranged in the valve sleeve, a pilot hole is arranged at the center of the valve core along the radial direction of the valve core, an ejector pin is arranged in the pilot hole in a sliding manner, a pilot spring is sleeved at one end, extending out of the valve core, of the ejector pin, and the ejector pin abuts against the movable iron core; the end part of the valve core is inserted into the oil outlet of the valve sleeve after the diameter of the conical sealing surface of the valve core is reduced, an oil outlet channel with an annular structure is formed between the end part of the valve core and the inner wall of the oil outlet of the valve sleeve, and the end part of the oil outlet of the valve sleeve is provided with a conical sealing surface of the valve sleeve which is attached and matched with the conical sealing surface of the valve core, so that the sealing structure is optimized, the product quality and the assembly efficiency are greatly improved, and the market competitiveness of products is favorably improved.
Description
Technical Field
The utility model relates to a guide's control valve belongs to solenoid valve technical field.
Background
Currently, pilot control valves are auxiliary valves used for operating control mechanisms in other valves or elements, which are connected by hydraulic lines. The working principle of the pilot valve is as follows: when the valve is electrified, the movable iron core is moved by electromagnetic force, so that a pilot hole on the valve core is opened to release pressure, and then under the action of the pressure difference of oil liquid, the valve core is pushed by the oil liquid pressure to move upwards to open a main valve port; when the power is off, the thimble is reset under the action of the spring force, the pilot hole is closed, the valve core moves downwards, and the main valve port is closed. The pilot valve magnetic isolation ring structure is difficult to machine and low in efficiency in the practical application process, the production efficiency and the product quality of the pilot valve magnetic isolation ring structure are greatly influenced, meanwhile, the requirement on the sealing precision between the valve core and the oil outlet of the valve sleeve in the conventional structure is extremely high, sealing is not tight enough often due to the existence of machining errors or insufficient experience of assembly personnel, and therefore the later-period use quality of the pilot valve is influenced, and therefore the pilot control valve with a new structure is needed urgently.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned not enough, provide a pilot control valve, it has improved the structure of pilot control valve to optimize seal structure, very big improvement product quality and assembly efficiency, be favorable to improving the market competition of product.
The purpose of the utility model is realized like this:
a pilot control valve comprises a valve body assembly, wherein a coil assembly is sleeved outside the valve body assembly, a step hole is formed in the valve body of the valve body assembly along the radial direction of the valve body assembly, an adjusting spring is located in the small-bore end of the step hole, and a movable iron core is located in the large-bore end of the step hole;
a valve sleeve of the control valve component is connected with the valve body, a valve core is movably arranged in the valve sleeve, a pilot hole is arranged at the center of the valve core along the radial direction of the valve core, an ejector pin is arranged in the pilot hole in a sliding manner, a pilot spring is sleeved at one end, extending out of the valve core, of the ejector pin, and the ejector pin abuts against the movable iron core; the end part of the valve core is inserted into the oil outlet of the valve sleeve after the diameter of the end part of the valve core is reduced through the conical sealing surface of the valve core, an oil outlet channel with an annular structure is formed between the end part of the valve core and the inner wall of the oil outlet of the valve sleeve, and the end part of the oil outlet of the valve sleeve is provided with a conical sealing surface of the valve sleeve, which is attached and matched with the conical sealing surface of.
The utility model relates to a pilot control valve, the sealed upper portion of face of valve barrel toper or the lower part arch are provided with the bulge loop, the sealed upper portion of face of case toper is provided with the sealing strip that has the annular packing structure.
The utility model relates to a pilot control valve, the outer wall of case is provided with the through-hole that is linked together with the pilot hole along its radial, be provided with a baffle in the pilot hole and divide the pilot hole into left guide hole and right guide hole, above-mentioned through-hole is linked together with left guide hole, and right guide hole is linked together with the right-hand member oil-out of valve barrel, is provided with a via hole that communicates left guide hole and right guide hole on the above-mentioned baffle, and the head toper section of thimble is inserted and is placed in this via hole; an annular oil cavity is formed between the end part of the valve core and the inner wall of the valve sleeve, the through hole is communicated with the annular oil cavity, and an oil inlet on the valve sleeve is communicated with the annular oil cavity.
The utility model relates to a pilot control valve, the valve body is connected with the valve barrel through coupling nut.
The utility model relates to a pilot operated valve, the thimble stretches the diameter increase of arranging the outer one end of case in and constitutes the major diameter end, and pilot operated spring suit is served at the minor diameter, and pilot operated spring's one end supports and leans on the step face, and the other end supports and leans on the case.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model improves the manufacturing mode of the valve body magnetism isolating ring, so that the valve body magnetism isolating ring is processed from an integral structure, and compared with the conventional welding connection mode, the strength and the concentricity are greatly improved on the whole; in addition, the whole assembly process adopts a vertical installation mode and combines an optimized threaded plug-in connection structure, so that the whole assembly is more convenient and the assembly effect is better; finally, the improved sealing structure greatly reduces the requirement on the processing precision, and the introduction of the micro convex ring enables the combination between the valve core and the outer wall of the oil outlet of the valve sleeve to be more compact, thereby greatly improving the sealing performance.
Drawings
Fig. 1 is a schematic structural diagram of a pilot control valve according to the present invention.
Fig. 2 is a partially enlarged view (closed state) of the valve element of the pilot control valve according to the present invention.
Fig. 3 is a partially enlarged view (opened state) of the valve element of the pilot control valve according to the present invention.
Fig. 4 is an enlarged view I of fig. 2 of a pilot control valve according to the present invention (fig. 4 shows how the collar is located at the lower portion, and the same collar may also be located at the upper portion).
Fig. 5 is a schematic structural diagram of the middle valve body of the present invention.
Fig. 6 is a partial schematic view of the valve body assembly of the present invention.
Fig. 7 is a schematic structural diagram of the control valve assembly of the present invention.
Fig. 8-10 are schematic diagrams illustrating an assembly process of the pilot control valve according to the present invention.
Wherein:
the valve comprises a valve body assembly 1, a coil assembly 2, a control valve assembly 3 and a locking nut 4;
the valve comprises a valve body 1.1, a movable iron core 1.2, an adjusting spring 1.3, a connecting nut 1.4 and an adjusting bolt 1.5;
valve barrel 3.1, valve core 3.2, thimble 3.3, guide spring 3.4.
A conical sealing surface 3.1.1 of the valve sleeve and a convex ring 3.1.2;
a conical sealing surface 3.2.1 of the valve core and a sealing belt 3.2.2.
Detailed Description
Referring to fig. 1-4, the utility model relates to a pilot control valve, including valve body subassembly 1, the valve body subassembly 1 overcoat is equipped with coil pack 2, be provided with the step hole along its radial in the valve body 1.1 of valve body subassembly 1, adjusting spring 1.3 is located the aperture footpath end in the step hole, moves iron core 1.2 and is located the large aperture end in the step hole;
a valve sleeve 3.1 of the control valve component 3 is connected with a valve body 1.1, a valve core 3.2 is movably arranged in the valve sleeve 3.1, a pilot hole is arranged at the center of the valve core 3.2 along the radial direction of the valve core, a thimble 3.3 is arranged in the pilot hole in a sliding manner, a pilot spring 3.4 is sleeved at one end of the thimble 3.3 extending out of the valve core 3.2, and the thimble 3.3 is abutted against a movable iron core 1.2; the end part of the valve core 3.2 is reduced in diameter through a valve core conical sealing surface 3.2.1 and then inserted into an oil outlet of the valve sleeve 3.1, an oil outlet channel with an annular structure is formed between the end part of the valve core 3.2 and the inner wall of an oil outlet of the valve sleeve 3.1, and the end part of the oil outlet of the valve sleeve 3.1 is provided with a valve sleeve conical sealing surface 3.1.1 which is matched with the valve core conical sealing surface 3.2.1 in a fit manner, so that the sealing surface is increased through surface contact;
furthermore, a convex ring 3.1.2 is convexly arranged on the upper part or the lower part of the valve sleeve conical sealing surface 3.1.1, and a sealing belt 3.2.2 with an annular structure is arranged on the upper part of the valve core conical sealing surface 3.2.1; by the design of the convex ring 3.1.2 (the convex size is small), the sealing reliability is ensured, the defect of processing precision or assembly error can be made up, meanwhile, the sealing performance is tighter and the hydraulic power is smoother when hydraulic oil is introduced under the action of the pilot valve through the design of the sealing belt 3.2.2, so that the overall control curve is smoother;
furthermore, a through hole communicated with the pilot hole is arranged on the outer wall of the valve core 3.2 along the radial direction of the valve core, a partition plate is arranged in the pilot hole to divide the pilot hole into a left pilot hole and a right pilot hole, the through hole is communicated with the left pilot hole, the right pilot hole is communicated with the oil outlet at the right end of the valve sleeve 3.1, a through hole communicated with the left pilot hole and the right pilot hole is arranged on the partition plate, and the head conical section of the thimble 3.3 is inserted in the through hole; an annular oil cavity is formed between the end part of the valve core 3.2 and the inner wall of the valve sleeve 3.1, the through hole is communicated with the annular oil cavity, and an oil inlet on the valve sleeve 3.1 is communicated with the annular oil cavity;
further, the valve body 1.1 is connected with the valve sleeve 3.1 through a connecting nut 1.4;
furthermore, the diameter of one end of the thimble 3.3 extending out of the valve core 3.2 is increased to form a large-diameter end, the pilot spring 3.4 is sleeved on the small-diameter end, one end of the pilot spring 3.4 abuts against the step surface, and the other end abuts against the valve core 3.2;
referring to fig. 5 to 10, a pilot control valve is assembled by the steps of:
step 4, the connecting nut 1.4 of the semi-finished valve body assembly 1 prepared in the step 2 is screwed on the valve sleeve 3.1 of the control valve assembly 3;
step 5, after the adjusting spring 1.3 is inserted into the valve body 1.1 and contacts the movable iron core 1.2, the adjusting bolt 1.5 is screwed on the valve body 1.1 to plug the adjusting spring 1.3;
step 6, after the coil assembly 2 is sleeved outside the valve body 1.1, the locking nut 4 is screwed on the valve body 1.1 to complete assembly;
and 7, detecting and carrying out performance test.
In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.
Claims (5)
1. The utility model provides a pilot control valve, includes valve body subassembly (1), and valve body subassembly (1) overcoat is equipped with coil pack (2), its characterized in that: a step hole is arranged in the valve body (1.1) of the valve body assembly (1) along the radial direction of the valve body assembly, an adjusting spring (1.3) is positioned in the small-bore end of the step hole, and a movable iron core (1.2) is positioned in the large-bore end of the step hole;
a valve sleeve (3.1) of the control valve component (3) is connected with the valve body (1.1), a valve core (3.2) is movably arranged in the valve sleeve (3.1), a pilot hole is arranged at the center of the valve core (3.2) along the radial direction of the valve core, a thimble (3.3) is arranged in the pilot hole in a sliding manner, a pilot spring (3.4) is sleeved at one end of the thimble (3.3) extending out of the valve core (3.2), and the thimble (3.3) is abutted against the movable iron core (1.2); the end part of the valve core (3.2) is inserted into the oil outlet of the valve sleeve (3.1) after the diameter of the valve core conical sealing surface (3.2.1) is reduced, an oil outlet channel with an annular structure is formed between the end part of the valve core (3.2) and the inner wall of the oil outlet of the valve sleeve (3.1), and the end part of the oil outlet of the valve sleeve (3.1) is provided with the valve sleeve conical sealing surface (3.1.1) which is jointed and matched with the valve core conical sealing surface (3.2.1).
2. A pilot control valve as defined in claim 1, wherein: the upper part or the lower part of the valve sleeve conical sealing surface (3.1.1) is convexly provided with a convex ring (3.1.2), and the upper part of the valve core conical sealing surface (3.2.1) is provided with a sealing strip (3.2.2) with an annular structure.
3. A pilot control valve as defined in claim 1, wherein: a through hole communicated with the pilot hole is formed in the outer wall of the valve core (3.2) along the radial direction of the valve core, a partition plate is arranged in the pilot hole to divide the pilot hole into a left pilot hole and a right pilot hole, the through hole is communicated with the left pilot hole, the right pilot hole is communicated with the oil outlet at the right end of the valve sleeve (3.1), a through hole communicated with the left pilot hole and the right pilot hole is formed in the partition plate, and the head conical section of the thimble (3.3) is inserted in the through hole; an annular oil cavity is formed between the end part of the valve core (3.2) and the inner wall of the valve sleeve (3.1), the through hole is communicated with the annular oil cavity, and an oil inlet on the valve sleeve (3.1) is communicated with the annular oil cavity.
4. A pilot control valve as defined in claim 1, wherein: the valve body (1.1) is connected with the valve sleeve (3.1) through a connecting nut (1.4).
5. A pilot control valve as defined in claim 1, wherein: the diameter of one end, extending out of the valve core (3.2), of the thimble (3.3) is increased to form a large-diameter end, the pilot spring (3.4) is sleeved on the small-diameter end, one end of the pilot spring (3.4) abuts against the step surface, and the other end of the pilot spring abuts against the valve core (3.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021041037.6U CN212509745U (en) | 2020-06-09 | 2020-06-09 | Pilot control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021041037.6U CN212509745U (en) | 2020-06-09 | 2020-06-09 | Pilot control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212509745U true CN212509745U (en) | 2021-02-09 |
Family
ID=74394453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021041037.6U Active CN212509745U (en) | 2020-06-09 | 2020-06-09 | Pilot control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212509745U (en) |
-
2020
- 2020-06-09 CN CN202021041037.6U patent/CN212509745U/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 pilot control valve Effective date of registration: 20210608 Granted publication date: 20210209 Pledgee: Qiaoqi sub branch of Jiangsu Jiangyin Rural Commercial Bank Co.,Ltd. Pledgor: JIANGYIN LINGE TECHNOLOGY Co.,Ltd. Registration number: Y2021320010202 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |