CN112682553B - Plug-in type pressure reducing valve - Google Patents
Plug-in type pressure reducing valve Download PDFInfo
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- CN112682553B CN112682553B CN202110118638.5A CN202110118638A CN112682553B CN 112682553 B CN112682553 B CN 112682553B CN 202110118638 A CN202110118638 A CN 202110118638A CN 112682553 B CN112682553 B CN 112682553B
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- Prior art keywords
- pressure reducing
- reducing valve
- pressure
- valve sleeve
- sleeve
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- 239000003921 oil Substances 0.000 claims description 65
- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
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- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a plug-in type pressure reducing valve, which comprises a connecting pipe, a guide sleeve, a spring, a pressure reducing valve sleeve, a pressure reducing valve core and a nut, wherein the pressure reducing valve core is inserted into the inner side of the pressure reducing valve sleeve; compared with the prior art, the invention has the beneficial effects that: the pressure reducing valve has the structure that the built-in pilot oil is externally output and acts in the multi-way valve, so that the internal cavity channel of the multi-way valve has a simple structure and the hydraulic control of the pilot oil is easy to realize; the pressure reducing valve has the advantages of simple and compact internal structure, convenient installation in various multi-way valves, small occupied space and high applicability.
Description
Technical Field
The invention relates to the technical field of pressure reducing valve structures, in particular to a plug-in type pressure reducing valve.
Background
The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through adjustment and automatically keeps the outlet pressure stable by means of the energy of a medium, and the common pressure reducing valve is a built-in pilot oil pair which is internally output to a pilot oil control oil duct in the multi-way valve, so that the internal cavity of the multi-way valve is complex in structure, high in cost and not applicable to the common multi-way valve. Accordingly, a person skilled in the art provides a cartridge-type pressure reducing valve to solve the above-mentioned problems set forth in the background art.
Disclosure of Invention
The invention aims to provide a plug-in type pressure reducing valve, which solves the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a cartridge formula relief pressure valve, includes connecting pipe, uide bushing, spring, relief pressure valve pocket, relief pressure valve core and nut, the relief pressure valve core inserts and establishes in the inboard of relief pressure valve pocket, is provided with the spring positioning tube on the relief pressure valve core, and the cover is equipped with the spring on the spring positioning tube, and the spring right side is provided with the uide bushing, and the uide bushing inserts and establishes between spring positioning tube and relief pressure valve pocket, and the uide bushing right-hand member is provided with spacing boss, connecting pipe fixed mounting is on the right side of relief pressure valve pocket, and spacing boss in uide bushing right-hand member is located between connecting pipe and the right wall of relief pressure valve pocket, the nut is installed in the left end of relief pressure valve pocket;
The valve sleeve oil inlet holes with the same circumference are formed in the pressure reducing valve sleeve, the oil inlet grooves are formed in the outer wall of the pressure reducing valve sleeve at the right side of the valve sleeve oil inlet holes, the valve sleeve oil inlet holes with the same circumference are formed in the pressure reducing valve sleeve at the right side of the pressure reducing valve sleeve, the valve sleeve oil outlet holes with the same circumference are formed in the pressure reducing valve sleeve at the right side of the valve sleeve oil inlet holes, the spring sleeve oil outlet holes are formed in the pressure reducing valve sleeve at the positions corresponding to the springs, the pressure equalizing grooves are formed in the outer wall of the pressure reducing valve sleeve at the left side of the pressure reducing valve sleeve, the partition between the pressure equalizing grooves and the oil inlet grooves is located in the middle of the valve sleeve oil inlet holes, and the balance oil holes are formed in the left wall of the pressure reducing valve sleeve.
As a further scheme of the invention: the left end of the spring is provided with an adjusting washer, and the inner diameter of the adjusting washer is equal to the outer diameter of the spring positioning tube.
As still further aspects of the invention: sealing rings are arranged on the connecting surface of the nut and the pressure reducing valve sleeve, the connecting surface of the pressure reducing valve sleeve and the connecting pipe, the connecting surface of the guide sleeve and the spring positioning pipe and the connecting surface of the guide sleeve and the pressure reducing valve sleeve.
Compared with the prior art, the invention has the beneficial effects that:
1. the pressure reducing valve has the structure that the built-in pilot oil is externally output and acts in the multi-way valve, so that the internal cavity channel of the multi-way valve has a simple structure and the hydraulic control of the pilot oil is easy to realize;
2. The pressure reducing valve has simple and compact internal structure, is convenient to install in various multi-way valves, occupies small space and has high applicability;
3. the pressure reducing valve can adjust the pressure of the pilot oil source by changing the length of the adjusting washer or the guide sleeve.
Drawings
Fig. 1 is a schematic structural view of a plug-in pressure reducing valve.
Fig. 2 is a schematic structural view of a pressure relief valve spool.
In the figure: 1-connecting pipe, 2-guide sleeve, 3-spring, 4-adjusting washer, 5-decompression valve sleeve, 6-decompression valve core, 7-nut, 8-valve sleeve oil inlet hole, 9-valve sleeve oil drain hole, 10-spring sleeve oil drain hole, 11-sealing ring, 601-equalizing groove, 602-oil inlet groove, 603-valve core oil inlet hole, 604-equalizing oil hole and 605-spring positioning pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, in the embodiment of the invention, a plug-in type pressure reducing valve comprises a connecting pipe 1, a guide sleeve 2, a spring 3, a pressure reducing valve sleeve 5, a pressure reducing valve core 6 and a nut 7, wherein the pressure reducing valve core 6 is inserted into the inner side of the pressure reducing valve sleeve 5, a spring positioning pipe 605 is arranged on the pressure reducing valve core 6 and used for positioning the spring 3, the spring 3 is sleeved on the spring positioning pipe 605, an adjusting washer 4 is arranged at the left end of the spring 3 and used for adjusting the preset pressure of the spring 3 and pushing the spring 3 to move, a guide sleeve 2 is arranged at the right side of the spring 3 and used for positioning the pressure reducing valve core, meanwhile, the guide sleeve 2 is inserted between the spring positioning pipe 605 and the pressure reducing valve sleeve 5, a limiting boss is arranged at the right end of the guide sleeve 2, the connecting pipe 1 is fixedly arranged at the right side of the pressure reducing valve sleeve 5, and the limiting boss at the right end of the guide sleeve 2 is positioned between the connecting pipe 1 and the right wall of the pressure reducing valve sleeve 5, and the nut 7 is arranged at the left end of the pressure reducing valve sleeve 5, so that the left end of the pressure reducing valve sleeve 5 is completely sealed;
The pressure reducing valve sleeve 5 is provided with a plurality of valve sleeve oil inlet holes 8 with equal circumferences, the outer wall of the pressure reducing valve sleeve 6 is provided with an oil inlet groove 602 corresponding to the right side of the valve sleeve oil inlet holes 8, the right side of the pressure reducing valve sleeve 6 corresponding to the oil inlet groove 602 is provided with a plurality of valve sleeve oil inlet holes 603 with equal circumferences, the valve sleeve oil inlet holes 603 penetrate through the side wall of the pressure reducing valve sleeve 6, hydraulic oil sequentially passes through the valve sleeve oil inlet holes 8, the oil inlet grooves 602 and the valve sleeve oil inlet holes 603 and then enters the pressure reducing valve sleeve 6, the right side of the pressure reducing valve sleeve 5 corresponding to the valve sleeve oil inlet holes 603 is provided with a plurality of valve sleeve oil drain holes 9 for reducing valve oil drain, the pressure reducing valve sleeve 5 is provided with a spring sleeve oil drain hole 10 corresponding to the spring 3, the outer wall of the pressure reducing valve sleeve 6 is provided with a pressure equalizing groove 601 corresponding to the left side of the oil inlet groove 602 for equalizing the driving force of external hydraulic oil to the valve sleeve, and the left wall of the pressure reducing valve sleeve 6 is provided with a balance oil hole 604;
the sealing rings 11 are arranged on the connecting surface of the screw cap 7 and the pressure reducing valve sleeve 5, the connecting surface of the pressure reducing valve sleeve 5 and the connecting pipe 1, the connecting surface of the guide sleeve 2 and the spring positioning pipe 605 and the connecting surface of the guide sleeve 2 and the pressure reducing valve sleeve 5.
The working principle of the invention is as follows:
The invention relates to a cartridge type pressure reducing valve, the oil source of the pressure reducing valve comes from the high-pressure oil source of the multiway valve of the hydraulic system, the hydraulic oil enters the valve pocket from the valve pocket oil inlet hole 8 on the pressure reducing valve pocket 5, then enter the pressure reducing valve core 6 after passing through the oil inlet groove 602 and valve core oil inlet hole 603 sequentially, the space of left end of the pressure reducing valve pocket 5 is closed, the hydraulic oil is output from right end of the pressure reducing valve core 6, because the pressure of hydraulic oil on the left and right end surfaces of the pressure reducing valve core 6 is equal, but the left end surface of the pressure reducing valve core 6 is bigger than the right end surface area, the pressure oil produces rightward acting force on the pressure reducing valve core 6, make the pressure reducing valve core 6 move rightward and compress the spring 3 until the acting force of spring 3 and hydraulic oil on the pressure reducing valve core 6 is balanced, the hydraulic oil pressure output at the connecting pipe 1 is the set pilot pressure oil source at this moment, in addition, the pressure equalizing groove 601 on the pressure reducing valve core 6 acts on the driving force of the pressure reducing valve core 6, and the inside of the pressure reducing valve is drained through the oil drain hole 9, the pressure reducing valve pocket 5 is also provided with the spring sleeve oil drain hole 10.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (1)
1. The utility model provides a cartridge formula relief pressure valve, includes connecting pipe (1), uide bushing (2), spring (3), relief pressure valve pocket (5), relief pressure case (6) and nut (7), its characterized in that, relief pressure case (6) are inserted and are established in the inboard of relief pressure valve pocket (5), be provided with spring positioning tube (605) on relief pressure case (6), the cover is equipped with spring (3) on spring positioning tube (605), spring (3) right side is provided with uide bushing (2), uide bushing (2) are inserted and are established between spring positioning tube (605) and relief pressure valve pocket (5), uide bushing (2) right-hand member is provided with spacing boss, connecting pipe (1) fixed mounting is on the right side of relief pressure valve pocket (5), spacing boss in uide bushing (2) right-hand member is located between connecting pipe (1) and the right wall of relief pressure valve pocket (5), nut (7) are installed in the left end of relief pressure valve pocket (5).
A plurality of valve sleeve oil inlet holes (8) with equal circumference are formed in the pressure reducing valve sleeve (5), an oil inlet groove (602) is formed in the outer wall of the pressure reducing valve sleeve (6) corresponding to the right side of the valve sleeve oil inlet hole (8), a plurality of valve sleeve oil inlet holes (603) with equal circumference are formed in the pressure reducing valve sleeve (6) corresponding to the right side of the oil inlet groove (602), the valve sleeve oil inlet holes (603) penetrate through the side wall of the pressure reducing valve sleeve (6), a plurality of valve sleeve oil drain holes (9) with equal circumference are formed in the pressure reducing valve sleeve (5) corresponding to the right side of the valve sleeve oil inlet holes (603), a spring sleeve oil drain hole (10) is formed in the pressure reducing valve sleeve (5) corresponding to the spring (3), a pressure equalizing groove (601) is formed in the outer wall of the pressure reducing valve sleeve (6) corresponding to the left side of the oil inlet groove (602), and a partition between the pressure equalizing groove (601) and the oil inlet groove (602) is located in the middle of the valve sleeve oil inlet hole (8), and a balance (604) is formed in the left wall of the pressure reducing valve sleeve (6);
An adjusting washer (4) is arranged at the left end of the spring (3), and the inner diameter of the adjusting washer (4) is equal to the outer diameter of the spring positioning tube (605);
the connecting surface of the nut (7) and the pressure reducing valve sleeve (5), the connecting surface of the pressure reducing valve sleeve (5) and the connecting pipe (1), the connecting surface of the guide sleeve (2) and the spring positioning pipe (605) and the connecting surface of the guide sleeve (2) and the pressure reducing valve sleeve (5) are provided with sealing rings (11);
The oil source of the pressure reducing valve comes from a high-pressure oil source of a multi-way valve of the hydraulic system, hydraulic oil enters the valve sleeve from a valve sleeve oil inlet hole (8) on the pressure reducing valve sleeve (5) and then sequentially enters the pressure reducing valve core (6) after passing through an oil inlet groove (602) and a valve core oil inlet hole (603), the left end space of the pressure reducing valve sleeve (5) is closed, hydraulic oil is output from the right end of the pressure reducing valve core (6), the pressure of the hydraulic oil on the left end face and the right end face of the pressure reducing valve core (6) are equal, but the left end face of the pressure reducing valve core (6) is larger than the area of the right end face, the pressure oil generates rightward acting force on the pressure reducing valve core (6), so that the pressure reducing valve core (6) moves rightward and compresses a spring (3) until the acting force of the spring (3) and the hydraulic oil on the pressure reducing valve core (6) is balanced, and the hydraulic oil pressure output at the connecting pipe (1) is the set pilot pressure oil source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118638.5A CN112682553B (en) | 2021-01-28 | 2021-01-28 | Plug-in type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118638.5A CN112682553B (en) | 2021-01-28 | 2021-01-28 | Plug-in type pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112682553A CN112682553A (en) | 2021-04-20 |
| CN112682553B true CN112682553B (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110118638.5A Active CN112682553B (en) | 2021-01-28 | 2021-01-28 | Plug-in type pressure reducing valve |
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| Country | Link |
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| CN (1) | CN112682553B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116351220B (en) * | 2023-03-15 | 2023-09-12 | 芯朋半导体科技(如东)有限公司 | Welding waste gas treatment equipment and treatment method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4416076A1 (en) * | 1994-05-06 | 1995-11-09 | Schmidt & Lenhardt Gmbh & Co | Pressure reducing valve for water hose under pressure |
| CN203856791U (en) * | 2014-04-30 | 2014-10-01 | 王敏 | Safety valve used for multi-way valve |
| CN204344992U (en) * | 2014-10-17 | 2015-05-20 | 徐工集团工程机械股份有限公司 | Load sensing multi-way valve, load sensitive system and excavator |
| CN206159579U (en) * | 2016-10-28 | 2017-05-10 | 南京六合煤矿机械有限责任公司 | Pilot -operated type relief valve |
-
2021
- 2021-01-28 CN CN202110118638.5A patent/CN112682553B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4416076A1 (en) * | 1994-05-06 | 1995-11-09 | Schmidt & Lenhardt Gmbh & Co | Pressure reducing valve for water hose under pressure |
| CN203856791U (en) * | 2014-04-30 | 2014-10-01 | 王敏 | Safety valve used for multi-way valve |
| CN204344992U (en) * | 2014-10-17 | 2015-05-20 | 徐工集团工程机械股份有限公司 | Load sensing multi-way valve, load sensitive system and excavator |
| CN206159579U (en) * | 2016-10-28 | 2017-05-10 | 南京六合煤矿机械有限责任公司 | Pilot -operated type relief valve |
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| Publication number | Publication date |
|---|---|
| CN112682553A (en) | 2021-04-20 |
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