CN213929566U - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
- Publication number
- CN213929566U CN213929566U CN202022163263.8U CN202022163263U CN213929566U CN 213929566 U CN213929566 U CN 213929566U CN 202022163263 U CN202022163263 U CN 202022163263U CN 213929566 U CN213929566 U CN 213929566U
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- China
- Prior art keywords
- main valve
- valve core
- pilot
- oil
- spring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 23
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The utility model relates to a pressure reducing valve, belonging to the technical field of hydraulic control and mainly solving the problems of unstable work and difficult adjustment in the prior art; including pilot valve and main valve, the pilot valve is in the same place with the main valve rigid coupling, and its characteristics are: the pilot valve comprises a pilot valve body, a pilot valve core unit, a pilot valve seat and a pressure regulating device, wherein the pilot valve body is provided with a cavity for accommodating the pilot valve core unit, a screw hole for installing the pressure regulating device and a pilot oil duct communicated with the main valve; the main valve comprises a main valve body, a main valve core and a main valve core spring, wherein the main valve body is provided with a cavity for accommodating the main valve core, the main valve core can slide up and down in the cavity of the main valve body, the upper end of the main valve core is provided with a spring bin for accommodating the spring, and one end of the main valve core spring is inserted into the spring bin; the main valve core is provided with an upper-end throttling oil duct and a lower-end throttling oil duct along the axis, and an oil hole is formed in an oil groove of the valve core; the upper end throttling oil passage and the lower end throttling oil passage are communicated with the oil hole.
Description
Technical Field
The utility model belongs to the technical field of hydraulic control, concretely relates to relief pressure valve.
Background
According to the product characteristics of the company, the existing standard pressure reducing valve cannot meet the product requirements of the company. The volume is large, the flow is large, and the standard pressure reducing valve works unstably and is difficult to adjust because the product of our company works under the condition of small flow.
Disclosure of Invention
The utility model discloses a solve the problem that exists at present, provide a relief pressure valve.
The utility model discloses a solve above-mentioned technical problem and the technical scheme who takes is:
the utility model provides a pressure reducing valve, includes pilot valve and main valve, and the pilot valve is in the same place with the main valve rigid coupling, and its characteristics are: the pilot valve comprises a pilot valve body, a pilot valve core unit, a pilot valve seat and a pressure regulating device, wherein the pilot valve body is provided with a cavity for accommodating the pilot valve core unit, a screw hole for installing the pressure regulating device and a pilot oil duct communicated with the main valve; the pilot valve core unit comprises a spring seat, a pressure regulating spring and a pilot cone valve core; the valve seat is in close contact with the pilot cone valve core under the action of the pressure regulating spring; the pressure regulating device comprises an ejector rod, a joint nut, a locking nut and a pressure regulating hand wheel; one end of the ejector rod is abutted against the spring seat, the other end of the ejector rod is fixedly connected with the pressure adjusting hand wheel, the ejector rod is in threaded fit with the joint nut, and the joint nut is fixedly connected to the pilot valve body and locked by the locking nut;
the main valve comprises a main valve body, a main valve core and a main valve core spring, wherein the main valve body is provided with a cavity for accommodating the main valve core, the main valve core can slide up and down in the cavity of the main valve body, the upper end of the main valve core is provided with a spring bin for accommodating the spring, one end of the main valve core spring is inserted into the spring bin, and the other end of the main valve core spring is propped against the pilot valve body; the main valve body comprises a primary pressure oil port, a secondary pressure oil port, a No. 2 oil groove and a No. 1 oil groove, the No. 2 oil groove is communicated with the secondary pressure oil port, the No. 1 oil groove is communicated with the primary pressure oil port, and the No. 2 oil groove and the No. 1 oil groove are positioned in a cavity of the main valve body, which is used for accommodating the main valve core;
the main valve core is provided with an upper-end throttling oil duct and a lower-end throttling oil duct along the axis, and an oil hole is formed in an oil groove of the No. 2 valve core; one end of the upper throttling oil duct is communicated with the spring bin, the other end of the upper throttling oil duct is communicated with the oil hole, one end of the lower throttling oil duct is communicated with the oil hole, and the other end of the lower throttling oil duct is communicated with the lower end of the main valve core.
The upper end throttling oil passage and the lower end throttling oil passage can be modified by flat end set screws.
Compared with the prior art, the utility model, following beneficial effect has:
the utility model discloses a pressure regulating device, pilot valve and main valve structure for system job stabilization, the adjustment is convenient, saves installation space. The utility model discloses also can use in the hydraulic system of other low discharge.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the main valve element of the present invention.
Wherein: 1-spring seat; 2-pressure regulating spring; 3-a pilot valve body; 3-1-a pilot oil duct; 4-pilot valve seat; 5-pilot cone valve core; 6, main valve body; 6-1-a primary pressure oil port; 6-2-secondary pressure oil port; number 6-3-2 oil sump; number 6-4-1 oil sump; 7-main valve element; 7-1-upper end of main valve core; 7-2-spring chamber; no. 7-3-1 valve core oil groove; no. 7-4-2 valve core oil groove; 7-5-lower end of main valve core; 7-6-lower end throttling oil duct; 7-7 oil holes; 7-8-upper end throttling oil duct; 8-main spool spring; 9-a mandril; 10-a union nut; 11-a locking nut; 12-pressure regulating hand wheel.
Detailed Description
As shown in fig. 1 and 2, a pressure reducing valve includes a pilot valve and a main valve, the pilot valve and the main valve are fixedly connected together, and the pressure reducing valve is characterized in that: the pilot valve comprises a pilot valve body 3, a pilot valve core unit, a pilot valve seat 4 and a pressure regulating device, wherein the pilot valve body 3 is provided with a cavity for accommodating the pilot valve core unit, a screw hole for installing the pressure regulating device and a pilot oil duct 3-1 communicated with a main valve; the pilot valve core unit comprises a spring seat 1, a pressure regulating spring 2 and a pilot cone valve core 5; the valve seat 4 is in close contact with the pilot cone valve core 5 under the action of the pressure regulating spring 2; the pressure regulating device comprises a mandril 9, a joint nut 10, a locking nut 11 and a pressure regulating hand wheel 12; one end of the ejector rod 9 is abutted against the spring seat 1, the other end of the ejector rod is fixedly connected with a pressure adjusting hand wheel 12, the ejector rod 9 is in threaded fit with the joint nut 10, and the joint nut 10 is fixedly connected to the pilot valve body 3 and locked by a locking nut 11;
the main valve comprises a main valve body 6, a main valve core 7 and a main valve core spring 8, the main valve body 6 is provided with a cavity for accommodating the main valve core 7, the main valve core 7 can slide up and down in the cavity of the main valve body 6, the upper end of the main valve core is provided with a spring bin 7-2 for accommodating the spring, one end of the main valve core spring 8 is inserted into the spring bin 7-2, and the other end of the main valve core spring is propped against the pilot valve body 3; the main valve body 6 comprises a primary pressure oil port 6-1, a secondary pressure oil port 6-2, a No. 2 oil groove 6-3 and a No. 1 oil groove 6-4, the No. 2 oil groove 6-3 is communicated with the secondary pressure oil port 6-2, the No. 1 oil groove 6-4 is communicated with the primary pressure oil port 6-1, and the No. 2 oil groove 6-3 and the No. 1 oil groove 6-4 are positioned in a cavity of the main valve body 6 for accommodating the main valve core 7;
the main valve core 7 is provided with an upper-end throttling oil duct 7-8 and a lower-end throttling oil duct 7-6 along the axial line, and an oil hole 7-7 is formed in an oil groove 7-4 of the No. 2 valve core; one end of the upper-end throttling oil duct 7-8 is communicated with the spring bin 7-2, the other end of the upper-end throttling oil duct is communicated with the oil hole 7-7, one end of the lower-end throttling oil duct 7-6 is communicated with the oil hole 7-7, and the other end of the lower-end throttling oil duct is communicated with the lower end 7-5 of the main valve core.
The upper end throttle oil passage 7-8 and the lower end throttle oil passage 7-6 can be modified by flat end set screws.
The working process and principle are as follows:
when the utility model works, pressure oil enters the No. 1 oil groove 6-4 and the No. 2 oil groove 6-3 through the primary pressure oil port 6-1, and simultaneously acts on the upper end 7-1 of the main valve core 7 and the lower end 7-5 of the main valve core 7 through the oil hole 7-7 on the main valve core 7 via the upper end throttling oil duct 7-8 and the lower end throttling oil duct 7-6;
if the pressure adjusting hand wheel 12 is unscrewed, the pressure difference between the upper end 7-1 of the main valve core and the lower end 7-5 of the main valve core is zero, the pressure reduction effect is not realized, and the pressure of the primary pressure oil port 6-1 is the same as that of the secondary pressure oil port 6-2;
if the pressure of the secondary pressure oil port 6-2 is required to be reduced, the pressure adjusting hand wheel 12 is screwed, the pressure adjusting spring 2 is compressed, the pilot cone valve core 5 is pushed to block the pilot oil port on the pilot valve seat 4, the pilot oil pressure rises, the lower end 7-5 of the main valve core is used for pushing the main valve core 7 to slide upwards, the distance between the upper side surface of the No. 2 oil groove 6-3 and the lower side surface of the No. 1 valve core oil groove 7-3 is reduced, the pressure adjusting hand wheel 12 is kept motionless at the moment, and the reduced pressure value is stabilized at a certain numerical value. The tighter the pressure adjusting hand wheel 12 is screwed, the larger the force applied to the lower end 7-5 of the main valve element is, the smaller the distance between the upper side surface of the oil groove 6-3 of the No. 2 valve element and the lower side surface of the oil groove 7-3 of the No. 1 valve element is, and the lower the pressure obtained by the secondary pressure oil port 6-2 is.
Claims (1)
1. The utility model provides a relief pressure valve, includes pilot valve and main valve, the pilot valve is in the same place with the main valve rigid coupling, characterized by: the pilot valve comprises a pilot valve body (3), a pilot valve core unit, a pilot valve seat (4) and a pressure regulating device, wherein the pilot valve body (3) is provided with a cavity for accommodating the pilot valve core unit, a screw hole for installing the pressure regulating device and a pilot oil duct (3-1) communicated with a main valve; the pilot valve core unit comprises a spring seat (1), a pressure regulating spring (2) and a pilot cone valve core (5); the valve seat (4) is in close contact with the pilot cone valve core (5) under the action of the pressure regulating spring (2); the pressure regulating device comprises a mandril (9), a joint nut (10), a locking nut (11) and a pressure regulating hand wheel (12); one end of the ejector rod (9) is abutted against the spring seat (1), the other end of the ejector rod is fixedly connected with a pressure adjusting hand wheel (12), the ejector rod (9) is in threaded fit with the joint nut (10), and the joint nut (10) is fixedly connected to the pilot valve body (3) and locked by a locking nut (11);
the main valve comprises a main valve body (6), a main valve core (7) and a main valve core spring (8), the main valve body (6) is provided with a cavity for accommodating the main valve core (7), the main valve core (7) can slide up and down in the cavity of the main valve body (6), the upper end of the main valve core is provided with a spring bin (7-2) for accommodating the spring, one end of the main valve core spring (8) is inserted into the spring bin (7-2), and the other end of the main valve core spring is propped against the pilot valve body (3); the main valve body (6) comprises a primary pressure oil port (6-1), a secondary pressure oil port (6-2), a No. 2 oil groove (6-3) and a No. 1 oil groove (6-4), the No. 2 oil groove (6-3) is communicated with the secondary pressure oil port (6-2), the No. 1 oil groove (6-4) is communicated with the primary pressure oil port (6-1), and the No. 2 oil groove (6-3) and the No. 1 oil groove (6-4) are positioned in a cavity, which is arranged on the main valve body (6) and used for accommodating the main valve core (7);
the main valve core (7) is provided with an upper-end throttling oil duct (7-8) and a lower-end throttling oil duct (7-6) along the axis, and an oil hole (7-7) is formed in an oil groove (7-4) of the No. 2 valve core; one end of the upper-end throttling oil duct (7-8) is communicated with the spring bin (7-2), the other end of the upper-end throttling oil duct is communicated with the oil hole (7-7), one end of the lower-end throttling oil duct (7-6) is communicated with the oil hole (7-7), and the other end of the lower-end throttling oil duct leads to the lower end (7-5) of the main valve core;
the upper end throttling oil passage (7-8) and the lower end throttling oil passage (7-6) can be modified by flat end set screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022163263.8U CN213929566U (en) | 2020-09-28 | 2020-09-28 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022163263.8U CN213929566U (en) | 2020-09-28 | 2020-09-28 | Pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213929566U true CN213929566U (en) | 2021-08-10 |
Family
ID=77219200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022163263.8U Expired - Fee Related CN213929566U (en) | 2020-09-28 | 2020-09-28 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213929566U (en) |
-
2020
- 2020-09-28 CN CN202022163263.8U patent/CN213929566U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210810 |