CN201110412Y - Fluid pressure reducing valve - Google Patents

Fluid pressure reducing valve Download PDF

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Publication number
CN201110412Y
CN201110412Y CNU2007201579197U CN200720157919U CN201110412Y CN 201110412 Y CN201110412 Y CN 201110412Y CN U2007201579197 U CNU2007201579197 U CN U2007201579197U CN 200720157919 U CN200720157919 U CN 200720157919U CN 201110412 Y CN201110412 Y CN 201110412Y
Authority
CN
China
Prior art keywords
valve
buffer
buffering
spring
valve pocket
Prior art date
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
Application number
CNU2007201579197U
Other languages
Chinese (zh)
Inventor
段会强
Original Assignee
段会强
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 段会强 filed Critical 段会强
Priority to CNU2007201579197U priority Critical patent/CN201110412Y/en
Application granted granted Critical
Publication of CN201110412Y publication Critical patent/CN201110412Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a hydraulic pressure relief valve, which comprises a valve body which is provided with an oil inlet path, an oil outlet path and a valve cavity, wherein one end of the valve cavity is closed and the other end is provided with a spring seat, a valve rod is arranged in the valve cavity for segregating the oil inlet channel and the oil outlet channel, a pressure spring is positioned between the valve rod and the spring seat, a twice buffer device is positioned in the valve body and comprises a buffer valve cavity which is positioned in the valve body, a piston and a buffer spring seat are arranged in the buffer valve cavity, a buffer spring is arranged between the piston and the buffer spring seat, a buffer channel is arranged in the valve body and is connected with the oil outlet path and the buffer valve cavity, an oil drainage path is communicated with the buffer valve cavity and is arranged in the buffer channel near to the valve body. The arrangement of the twice buffer device realizes the goal for stabilizing pressure, increases the buffer ability, reduces fatigue of the pressure spring and lengthens the use life.

Description

A kind of hydraulic pressure reduction valve
Technical field
The utility model relates to a kind of hydraulic pressure reduction valve, belongs to mechanical field.
Background technique
Spring reduction valve in the market, its working principle is to utilize adjusting screw rod to control the height of pressing spring, by the interlock valve rod aperture of coming control valve, reaching the decompression purpose, this elastic force that utilizes spring is controlled the reduction valve of aperture, spring is tired easily, buffer capacity is poor, cause pressure transient in a short time, serious also can cause valve stem crack, in the decompression working procedure, cause the vibration of hydraulic system, and produce noise.
Summary of the invention
Technical problem to be solved in the utility model is at above defective, provides that a kind of buffer capacity is strong, a kind of hydraulic pressure reduction valve of long service life.
For addressing the above problem, the utility model adopts following technological scheme: a kind of hydraulic pressure reduction valve, comprise and be provided with oil inlet passage, the valve body of oil discharge passage and valve pocket, the one end sealing of described valve pocket, the other end is provided with spring seat, be provided with the valve rod that is used for cutting off oil inlet passage and oil discharge passage in the described valve pocket, be provided with pressure spring between described valve rod and the spring seat, it is characterized in that: be provided with the secondary buffer device in the described valve body, described secondary buffer device comprises the buffering valve pocket that is arranged in the valve body, be provided with piston and buffering spring seat in the described buffering valve pocket, be provided with damping spring between described piston and the buffering spring seat, be provided with buffer channel in the described valve body, described buffer channel is communicated with oil discharge passage and buffering valve pocket, and the interior close buffer channel place of described valve body is provided with and cushions the draining passage that valve pocket is communicated with.
Below be the utility model for further improvement of these options:
The opening of described buffering valve pocket is provided with the elastic force controlling mechanism that is used for adjusting damping spring elastic force.
Described elastic force controlling mechanism comprises adjusting nut that is threaded with the buffering valve pocket and the bolt that is threaded with adjusting nut.
Beneficial effect
The utility model adopts technique scheme, have the following advantages: the setting of secondary buffer device, can make hydraulic oil be full of buffer channel through oil discharge passage, and by piston compressing damping spring, when the pressure of hydraulic oil is higher, hydraulic oil shrinks by piston compressing damping spring, piston outwards moves, when exposing the drain tap of draining passage, hydraulic oil is by the drain tap release pressure, and after the pressure of hydraulic oil reduced, the elastic force compressing piston of damping spring moved inward, when the pressure of hydraulic oil drops to setting value, piston is blocked the drain tap of draining passage, has realized the purpose of steady pressure, has strengthened buffer capacity, reduce the fatigue strength of pressure spring, prolonged working life.
Below in conjunction with drawings and Examples the utility model is further described:
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 be among Fig. 1 A-A to sectional view.
Embodiment
1-regulates bolt, 2-set screw nut, 3-pressure cap, 4-seal ring, the 5-pressure spring, 6-spring seat, 7-pressure spring, the 8-valve body, 10-valve rod, 11-cushion cover, the 12-seal ring, 13-combined seal ring, 14-plug, the 15-spacer, 16-adjusting nut, 17-bolt, the 18-packing ring, 19-combined seal ring, 20-seal ring, the 21-buffer casting, 22-seal ring, 23-damping spring, the 24-piston, 25-oil inlet passage, 26-oil discharge passage, the 27-valve pocket, 28-cushions valve pocket 28,29-buffer channel, 30-draining passage, 31-vent, 32-set screw nut
Embodiment, as shown in Figure 1, a kind of hydraulic pressure reduction valve, comprise and be provided with oil inlet passage 25, the valve body 8 of oil discharge passage 26 and valve pocket 27, one end of valve pocket 27 is provided with plug 14, O RunddichtringO 12 and combined seal ring 13 are installed between plug 14 and the valve body 8, be provided with the valve rod 10 that is used for cutting off oil inlet passage 25 and oil discharge passage 26 in the valve pocket 27, be provided with pressure spring 5 and pressure spring 7 between valve rod 10 and the spring seat 6, be provided with cushion cover 11 between valve rod 10 and the plug 14, the other end of valve pocket 27 is provided with spring seat 6 and is used for spring seat 6 is carried out the pressure cap 3 of screens, be threaded on the pressure cap 3 and regulated bolt 1, regulate the set screw nut 2 that has been threaded on the bolt 1, spring seat 6 is provided with O RunddichtringO 4, and valve body 8 has the vent 31 that is communicated with valve pocket 27 and buffering valve pocket 28 and ambient atmosphere.
As shown in Figure 2, be provided with the secondary buffer device in the valve body 8, the secondary buffer device comprises the buffering valve pocket 28 that is arranged in the valve body 8, be provided with piston 24 and buffering spring seat 21 in the buffering valve pocket 28, be provided with damping spring 23 between piston 24 and the buffering spring seat 21, buffer casting 21 is provided with O RunddichtringO 22, be provided with buffer channel 29 in the valve body 8, buffer channel 29 is communicated with oil discharge passage 26 and buffering valve pocket 28, valve body 8 interior close buffer channel 29 places are provided with and cushion the draining passage 30 that valve pocket 28 is communicated with, draining passage 30 and buffer channel 29 infalls have been provided with the spacer 15 of airtight buffer action, the opening of buffering valve pocket 28 is provided with the elastic force controlling mechanism that is used for adjusting damping spring 23 elastic force, the elastic force controlling mechanism comprises the adjusting nut 16 that buffering valve pocket 28 is threaded, adjusting nut 16 bolt 17 that has been threaded, set screw nut 32 has been threaded on the bolt 17, have packing ring 18 and combined seal ring 19 between nut 32 and the adjusting nut 16, be provided with O RunddichtringO 20 between adjusting nut 16 and the valve body 8, this bolt 17 promotes buffer casting 21 and moves in buffering valve pocket 28.

Claims (3)

1, a kind of hydraulic pressure reduction valve, comprise and be provided with oil inlet passage (25), the valve body (8) of oil discharge passage (26) and valve pocket (27), the one end sealing of described valve pocket (27), the other end is provided with spring seat (6), be provided with the valve rod (10) that is used for cutting off oil inlet passage (25) and oil discharge passage (26) in the described valve pocket (27), be provided with pressure spring (5 between described valve rod (10) and the spring seat (6), 7), it is characterized in that: described valve body is provided with the secondary buffer device in (8), described secondary buffer device comprises the buffering valve pocket (28) that is arranged in the valve body (8), be provided with piston (24) and buffering spring seat (21) in the described buffering valve pocket (28), be provided with damping spring (23) between described piston (24) and the buffering spring seat (21), be provided with buffer channel (29) in the described valve body (8), described buffer channel (29) is communicated with oil discharge passage (26) and buffering valve pocket (28), and the interior close buffer channel (29) of described valve body (8) is located to be provided with and cushioned the draining passage (30) that valve pocket (28) is communicated with.
2, a kind of hydraulic pressure reduction valve as claimed in claim 1, it is characterized in that: the opening of described buffering valve pocket (28) is provided with the elastic force controlling mechanism that is used for adjusting damping spring (23) elastic force.
3, a kind of hydraulic pressure reduction valve as claimed in claim 2 is characterized in that: described elastic force controlling mechanism comprises adjusting nut (16) that is threaded with buffering valve pocket (28) and the bolt (17) that is threaded with adjusting nut (16).
CNU2007201579197U 2007-11-29 2007-11-29 Fluid pressure reducing valve Expired - Fee Related CN201110412Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201579197U CN201110412Y (en) 2007-11-29 2007-11-29 Fluid pressure reducing valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201579197U CN201110412Y (en) 2007-11-29 2007-11-29 Fluid pressure reducing valve

Publications (1)

Publication Number Publication Date
CN201110412Y true CN201110412Y (en) 2008-09-03

Family

ID=39894943

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201579197U Expired - Fee Related CN201110412Y (en) 2007-11-29 2007-11-29 Fluid pressure reducing valve

Country Status (1)

Country Link
CN (1) CN201110412Y (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102979930A (en) * 2012-10-31 2013-03-20 无锡鸿声铝业有限公司 Side-by-side fuel dump bypass pressure reduction device used for water pressure test
CN102996545A (en) * 2012-10-31 2013-03-27 无锡鸿声铝业有限公司 Decompression device capable of detecting pressure of oil outlet cavity in same direction for rubber forming machine
CN102996548A (en) * 2012-10-31 2013-03-27 无锡鸿声铝业有限公司 Pressure reduction device for steel pipe injection water pressure test
CN102996869A (en) * 2012-10-31 2013-03-27 无锡鸿声铝业有限公司 Decompression device capable of detecting oil drainage in same direction for rubber forming machine
CN102996544A (en) * 2012-10-31 2013-03-27 无锡鸿声铝业有限公司 Dual-oil-circuit pressure reducing valve of rubber molding equipment
CN102996549A (en) * 2012-10-31 2013-03-27 无锡鸿声铝业有限公司 Pressure reducing device for water pressure testing of rubber molding equipment
CN104343759A (en) * 2013-07-23 2015-02-11 武汉机械股份有限公司 Pressure regulating valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102979930A (en) * 2012-10-31 2013-03-20 无锡鸿声铝业有限公司 Side-by-side fuel dump bypass pressure reduction device used for water pressure test
CN102996545A (en) * 2012-10-31 2013-03-27 无锡鸿声铝业有限公司 Decompression device capable of detecting pressure of oil outlet cavity in same direction for rubber forming machine
CN102996548A (en) * 2012-10-31 2013-03-27 无锡鸿声铝业有限公司 Pressure reduction device for steel pipe injection water pressure test
CN102996869A (en) * 2012-10-31 2013-03-27 无锡鸿声铝业有限公司 Decompression device capable of detecting oil drainage in same direction for rubber forming machine
CN102996544A (en) * 2012-10-31 2013-03-27 无锡鸿声铝业有限公司 Dual-oil-circuit pressure reducing valve of rubber molding equipment
CN102996549A (en) * 2012-10-31 2013-03-27 无锡鸿声铝业有限公司 Pressure reducing device for water pressure testing of rubber molding equipment
CN104343759A (en) * 2013-07-23 2015-02-11 武汉机械股份有限公司 Pressure regulating valve
CN104343759B (en) * 2013-07-23 2016-02-24 武汉机械股份有限公司 pressure maintaining valve

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080903

Termination date: 20131129