CN217977650U - High-precision direct-drive proportional overflow valve - Google Patents
High-precision direct-drive proportional overflow valve Download PDFInfo
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- CN217977650U CN217977650U CN202222287817.4U CN202222287817U CN217977650U CN 217977650 U CN217977650 U CN 217977650U CN 202222287817 U CN202222287817 U CN 202222287817U CN 217977650 U CN217977650 U CN 217977650U
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Abstract
The utility model relates to a high accuracy direct drive formula proportion overflow valve. The technical problems of high processing requirement, poor control precision, slow response, low repetition precision and large volume and weight of the conventional direct-acting proportional overflow valve are mainly solved. The technical scheme of the utility model is that: the utility model provides a high accuracy direct-drive formula proportion overflow valve, includes the proportion electro-magnet, and it still includes valve body, disk seat, cone valve core, first sealing washer and second sealing washer, the big cylinder dress of disk seat that is equipped with first sealing washer is in the valve opening that the valve body middle part set up, the one end of the little cylinder dress of disk seat at the little hole of proportion electro-magnet magnetic tube forms integratively through interference fit, the cone valve core dress is in the little hole of proportion electro-magnet magnetic tube, and its conical surface forms the line seal with the conical oil hole line contact of disk seat and realizes the oil sealing function, proportion electro-magnet magnetic tube axle end is equipped with the screw thread to the disk seat jogged joint through screw thread and valve body setting.
Description
Technical Field
The utility model belongs to the technical field of the hydrovalve, concretely relates to high accuracy directly drives formula proportional overflow valve.
Background
Proportional pressure valves, particularly proportional relief valves, are widely used and are indispensable control elements in many hydraulic systems. The proportional overflow valve consists of a proportional control part and a hydraulic valve, a command signal is subjected to power amplification through a proportional amplifier, current is output to a proportional electromagnet in proportion, and a force value is output by the proportional electromagnet and directly acts on a valve core in proportion, so that stepless pressure regulation is realized. The direct-drive proportional overflow valve is compact in structure, and single-stage pressure regulation is realized through electric proportional control.
The existing commonly used direct-acting type proportional overflow valve is installed in a plate mode, a proportional electromagnet is connected with a valve body through threads or flanges, and the output force value of the proportional electromagnet acts on a valve core through a force transmission spring; the valve body is processed with the shoulder hole, and disk seat, case are installed in the valve body hole. The method mainly has the following defects: 1. the valve body hole processing requirement is high, and the requirements on form and position tolerance and smoothness are high; 2. the valve core and the valve seat are arranged in the valve body hole, and the shape and position accuracy control manufacturability of the valve core, the valve seat and the valve body hole is poor; 3. electromagnetic force acts on the valve core through the force transmission spring to influence the response and the repeatability precision of the overflow valve; 4. the highest regulating pressure is 31.5MPa, so that certain application limitation is realized; 5. the volume and the weight are large.
Disclosure of Invention
The utility model aims at solving the technical problems of high processing requirement, poor control precision, slow response, low repetition precision, large volume and weight of the existing direct-acting proportional overflow valve, and providing a high-precision direct-driving proportional overflow valve.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a high-precision direct-drive proportional overflow valve comprises a proportional electromagnet consisting of a proportional electromagnet magnetic tube (4), a proportional electromagnet push rod (7), a proportional electromagnet magnetism isolating ring (8), a proportional electromagnet moving iron (9), a first proportional electromagnet spring seat (10), a proportional electromagnet pressure regulating spring (11), a proportional electromagnet fine-tuning spring (12), a second proportional electromagnet spring seat (13), a proportional electromagnet nut (16), a proportional electromagnet dust cap (18), a proportional electromagnet lock nut (19), a proportional electromagnet adjusting rod (20), a proportional electromagnet plug (21), a proportional electromagnet coil (22), a proportional electromagnet plug (23) and a proportional electromagnet coil shell (24), and further comprises a valve body (1), a valve seat (2), a conical valve core (3), a first sealing ring (5) and a second sealing ring (6), wherein the valve seat (2) consists of a large cylinder and a small cylinder, the large cylinder with the first sealing ring (5) is arranged in the large cylinder arranged in the middle of the valve body (1), the valve seat (2) is provided with the first sealing ring (5), the small cylinder (2) is provided with a small cylinder, the valve seat (2) is provided with the small cylinder (4), and an oil hole is formed in one end face of the small cylinder (4), the cone valve core (3) is arranged in a small inner hole of the proportion electromagnet magnetic pipe (4) and can move in the small inner hole, the conical surface of the cone valve core and the conical oil hole of the valve seat (2) are in line contact to form a line seal to realize an oil sealing function, the shaft end of the proportion electromagnet magnetic pipe (4) is provided with threads and is connected with a valve seat hole formed in the valve body (1) through the threads, and the second sealing ring (6) is arranged in a sealing groove formed in the outer side surface of the shaft end of the proportion electromagnet magnetic pipe (4).
Furthermore, one end of the proportional electromagnet push rod (7) is in contact with the left end face of the cone valve core (3), so that the output force value of the proportional electromagnet push rod directly acts on the cone valve core (3).
Furthermore, the proportional electromagnet moving iron (9) and the other end of the proportional electromagnet push rod (7) are integrated through interference fit, and synchronous movement is achieved.
The utility model has the advantages that:
the utility model discloses constitute whole plug-in components with proportion electro-magnet magnetism pipe, cone valve core and disk seat, be connected through the valve opening that the screw thread set up with the valve body for one end of proportion electro-magnet push rod contacts with the left end face of cone valve core, directly acts on cone valve core with the power value of electromagnetic force proportional output, has improved the response speed and the repeatability of overflow valve, has improved regulation pressure and control accuracy, and the highest regulation pressure can reach 42MPa; the volume is reduced, and the weight is reduced. Compared with the prior art, the utility model has the advantages of adjust pressure height, response fast, repeatability is high, small, light in weight, with low costs and reliable operation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an external view of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the high-precision direct-drive proportional relief valve in the present embodiment includes a proportional electromagnet composed of a proportional electromagnet magnetic tube 4, a proportional electromagnet push rod 7, a proportional electromagnet magnetism isolating ring 8, a proportional electromagnet moving iron 9, a first proportional electromagnet spring seat 10, a proportional electromagnet pressure regulating spring 11, a proportional electromagnet fine-tuning spring 12, a second proportional electromagnet spring seat 13, a proportional electromagnet nut 16, a proportional electromagnet dust cap 18, a proportional electromagnet lock nut 19, a proportional electromagnet adjusting rod 20, a proportional electromagnet plug 21, a proportional electromagnet coil 22, a proportional electromagnet plug 23 and a proportional electromagnet coil housing 24, wherein the proportional electromagnet coil 22 is of a hollow winding structure, the proportional electromagnet coil 22 is installed in the proportional electromagnet coil housing 24 and is sleeved on the outer circle of the proportional electromagnet magnetic tube 4, the proportional electromagnet moving iron 9 is installed in a large inner hole provided at the left end of the proportional electromagnet magnetic tube 4 and is free to move axially, the proportional electromagnet magnetism isolating ring 8 is installed in a small inner hole of the proportional electromagnet magnetic tube 4 and is located at the connection point of the large inner hole, the proportional electromagnet moving iron coil 9 is installed in a hole of the proportional electromagnet spring seat, the proportional electromagnet spring seat 13 is connected to the end face of the second proportional electromagnet spring seat, the proportional electromagnet spring seat 13 is welded to the end face of the proportional electromagnet moving iron, the proportional electromagnet moving iron spring seat, the proportional electromagnet spring seat is installed in the proportional electromagnet spring seat, the proportional electromagnet spring seat 13; the outer circle of the left end of the first proportional electromagnet spring seat 10 is provided with a thread, the thread penetrates through a center hole of the second proportional electromagnet spring seat 13 and is connected with the right end of a proportional electromagnet adjusting rod 20 through the thread, an external thread arranged at the left end of the proportional electromagnet adjusting rod 20 is connected with an internal thread arranged at the left end of an inner hole of a proportional electromagnet plug 21 and is fixed through a proportional electromagnet locking nut 19, a fifth sealing ring 17 is arranged in a sealing groove formed in the outer circle of the proportional electromagnet adjusting rod 20, the right end of the proportional electromagnet plug 21 is arranged at the left end of a large inner hole formed in a proportional electromagnet ferromagnetic tube 4, a fourth sealing ring 15 is arranged in a sealing groove formed in the right end of the proportional electromagnet plug 21, a proportional electromagnet nut 16 is sleeved on the proportional electromagnet plug 21 and is connected through the thread, and the inner surface of a proportional electromagnet dust cap 18 is tightly matched with the outer circle of the proportional electromagnet locking nut 19 to realize dust prevention; the third sealing ring 14 is arranged on the outer circle of the left end of the proportional electromagnetic ferromagnetic tube 4, is in contact with the left end face of the proportional electromagnetic coil shell 24, and is simultaneously pressed by the inner hole conical surface of the proportional electromagnetic nut 16 to realize sealing of hydraulic oil; the proportional electromagnet plug 23 is arranged on a socket of a proportional electromagnet coil shell 24; it still includes valve body 1, disk seat 2, cone valve core 3, first sealing washer 5 and second sealing washer 6, disk seat 2 comprises big, small cylinder, the cylinder of the big cylinder of disk seat 2 is equipped with first sealing washer 5, the big cylinder dress of disk seat 2 who is equipped with first sealing washer 5 is just two-way seal P, T fluid mouth in the valve opening that valve body 1 middle part set up, the one end of the little cylinder dress of disk seat 2 at the little hole of proportion electromagnetism ferromagnetic tube 4 forms an organic whole through interference fit, disk seat 2 little cylinder terminal surface is equipped with the toper oilhole, cone valve core 3 dress is in the little hole of proportion electromagnetism ferromagnetic tube 4 and can remove in little hole, and its conical surface forms the line seal with the toper oilhole line contact of disk seat 2 and realizes the oil-sealing function, proportion electromagnetism ferromagnetic tube 4 axle head is equipped with the screw thread to be connected through the valve opening that screw thread and valve body 1 set up, second sealing washer 6 is established in the seal groove that the ferromagnetic tube 4 axle head lateral surface of proportion electromagnetism set up.
One end of the proportional electromagnet push rod 7 is in contact with the left end face of the cone valve core 3, so that the output force value of the proportional electromagnet push rod directly acts on the cone valve core 3.
The proportional electromagnet moving iron 9 and the other end of the proportional electromagnet push rod 7 form a whole through interference fit, and synchronous movement is achieved.
The utility model discloses a working process does: an input proportional current signal acts on a proportional electromagnet coil 22, the proportional electromagnet coil 22 enables an electromagnetic force to be generated in a proportional electromagnet magnetic tube 4, the electromagnetic force acts on a proportional electromagnet moving iron 9 to enable the proportional electromagnet moving iron to move and drive a proportional electromagnet push rod 7 to move synchronously, the proportional electromagnet push rod 7 directly acts on the left end face of a conical valve core 3, a P port oil liquid pressure acts on the end portion of a conical oil hole of a valve seat 2, when the P port pressure is larger than the electromagnetic force directly acting on the conical valve core 3 by the proportional electromagnet push rod 7, the conical valve core 3 is pushed to move leftwards in an axial direction, and the P port oil liquid is enabled to flow to a T port and unload.
Claims (3)
1. The utility model provides a high accuracy direct-driven proportion overflow valve, include by proportion electro-magnet magnetic tube (4), proportion electro-magnet push rod (7), the proportion electro-magnet separates magnetic ring (8), proportion electro-magnet moving iron (9), first proportion electro-magnet spring holder (10), proportion electro-magnet pressure regulating spring (11), proportion electro-magnet fine setting spring (12), second proportion electro-magnet spring holder (13), proportion electro-magnet nut (16), proportion electro-magnet dust cap (18), proportion electro-magnet lock nut (19), proportion electro-magnet regulation pole (20), proportion electro-magnet plug (21), proportion electro-magnet coil (22), proportion electro-magnet plug (23) and proportion electro-magnet coil shell (24) the proportion electro-magnet of constituteing, its characterized in that: still include valve body (1), disk seat (2), cone case (3), first sealing washer (5) and second sealing washer (6), disk seat (2) comprise big, small cylinder, the cylinder of disk seat (2) large cylinder is equipped with first sealing washer (5), disk seat (2) large cylinder dress that is equipped with first sealing washer (5) is just two-way seal P, T fluid mouth in the valve opening that valve body (1) middle part set up, disk seat (2) small cylinder dress is in the one end of proportion electro-magnet magnetic tube (4) small bore and forms an organic whole through interference fit, disk seat (2) small cylinder terminal surface is equipped with the toper oilhole, cone case (3) dress can remove in the small bore of proportion electro-magnet magnetic tube (4), and its toper oilhole line contact formation line of disk seat (2) seals realizes sealing oil function, proportion electro-magnet tube (4) are equipped with the screw thread to be connected through the axle head that screw thread and valve body (1) set up, second sealing washer (6) are established in the axle head of proportion electro-magnet magnetic tube (4) seal groove.
2. The high-precision direct-drive proportional overflow valve according to claim 1, characterized in that: one end of the proportional electromagnet push rod (7) is in contact with the left end face of the cone valve core (3), so that the output force value of the proportional electromagnet push rod directly acts on the cone valve core (3).
3. The high-precision direct-drive proportional overflow valve according to claim 1, characterized in that: the proportion electromagnet moving iron (9) and the other end of the proportion electromagnet push rod (7) are integrated through interference fit, and synchronous movement is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222287817.4U CN217977650U (en) | 2022-08-30 | 2022-08-30 | High-precision direct-drive proportional overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222287817.4U CN217977650U (en) | 2022-08-30 | 2022-08-30 | High-precision direct-drive proportional overflow valve |
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| Publication Number | Publication Date |
|---|---|
| CN217977650U true CN217977650U (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222287817.4U Active CN217977650U (en) | 2022-08-30 | 2022-08-30 | High-precision direct-drive proportional overflow valve |
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| CN (1) | CN217977650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116972205A (en) * | 2023-09-04 | 2023-10-31 | 杜商精机（嘉兴）有限公司 | High-safety overflow valve with buffering function |
-
2022
- 2022-08-30 CN CN202222287817.4U patent/CN217977650U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116972205A (en) * | 2023-09-04 | 2023-10-31 | 杜商精机（嘉兴）有限公司 | High-safety overflow valve with buffering function |
| CN116972205B (en) * | 2023-09-04 | 2023-12-29 | 杜商精机（嘉兴）有限公司 | High-safety overflow valve with buffering function |
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