CN108953633B - A kind of screw-in cartridge valve - Google Patents
A kind of screw-in cartridge valve Download PDFInfo
- Publication number
- CN108953633B CN108953633B CN201811134281.4A CN201811134281A CN108953633B CN 108953633 B CN108953633 B CN 108953633B CN 201811134281 A CN201811134281 A CN 201811134281A CN 108953633 B CN108953633 B CN 108953633B
- Authority
- CN
- China
- Prior art keywords
- spool
- mouthfuls
- valve
- intercommunicating pore
- valve body
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
Abstract
The invention discloses a kind of screw-in cartridge valves, which is characterized in that including valve body, swivel nut, off-load spool, is equipped with interconnected threaded hole, off-load spool bore, intercommunicating pore, push-rod hole, through-flow slot, mounting hole sequentially coaxially from the bottom to top in the valve body；The circumference side of the valve body is equipped with T mouthfuls, P mouthfuls, A mouthfuls；Off-load spool includes position insert body and valve core cone, and valve core cone is equipped with spool slide bar, and the circumference side of the spool slide bar is equipped with annular grooving, forms the first through-flow slot between annular grooving and the inner sidewall of intercommunicating pore；The first discharge orifice and the second discharge orifice are equipped in valve body；Unloading spring is installed, swivel nut is mounted on the upper end of threaded hole, and the swivel nut internal screw thread is connected with adjusting rod in the threaded hole；Nonreturn valve core is installed in mounting hole, spring base is installed at the lower ending opening of the mounting hole, is equipped with unidirectional spring in mounting hole；The screw-in cartridge valve volume compact, the processing is simple, and manufacturing cost is low.
Description
Technical field
The present invention relates to hydraulic valve technology, specially a kind of screw-in cartridge valve.
Background technique
Duplex hydraulic pump is usually used in the special purpose machine tool for having the machining of fast feed and work feed requirement, at this moment double
Connection pump by a high-pressure low-flow hydraulic pump and a low pressure and mass flow hydraulic pressure pump group at.When fast feed, two hydraulic pumps are simultaneously
Fuel feeding (pressure is lower at this time), when work feed, by the hydraulic oil pump feed of high-pressure low-flow (pressure is higher at this time), while in oil
Make high-capacity pump off-load in the system of road, this can save the energy compared with using the pump of a high-pressure high-flow, reduce oil liquid hair
Heat.In the prior art, work feed is transformed by fast feed to control duplex hydraulic pump frequently with off-load valve group, makes low pressure
High-capacity pump carries out off-load, and existing off-load valve group is generally integrated into a valve block by independent check valve, unloading valve, volume
It is huge, with high costs.
Summary of the invention
(1) technical problems to be solved
The defect aimed to overcome that in the prior art of the invention patent, provides that a kind of volume compact, the processing is simple, system
Make screw-in cartridge valve at low cost.
(2) technical solution
To achieve the above object, it the invention provides the following technical scheme: a kind of screw-in cartridge valve, including valve body, swivel nut, unloads
Lotus spool is equipped with interconnected threaded hole in the valve body sequentially coaxially from the bottom to top, off-load spool bore, intercommunicating pore, pushes away
Rod aperture, through-flow slot, mounting hole；It is equipped with and off-load spool bore on the circumference side of the valve body in the lower end close to off-load spool bore
The T mouth of connection is equipped with the A mouth being connected to mounting hole equipped with P mouthfuls, in the lower end of close valve body at the middle part of intercommunicating pore；It is described to unload
Lotus spool includes the insert body in off-load spool bore, and is arranged on insert body for controlling intercommunicating pore and off-load
The valve core cone of spool bore on-off, the valve core cone is equipped with the spool slide bar being slidably connected in the intercommunicating pore, described
Annular grooving, the inner sidewall of the annular grooving and intercommunicating pore are being equipped at valve core cone on the circumference side of spool slide bar
Between formed the first through-flow slot；The first discharge orifice for being connected to P mouthfuls He the first through-flow slot is equipped in the valve body, and for connecting
Lead to the second discharge orifice of P mouthfuls and through-flow slot；It is equipped in the threaded hole for valve core cone to be pressed on unloading for intercommunicating pore upper end
Lotus spring, the swivel nut are mounted on the upper end of threaded hole, and the swivel nut internal screw thread is connected with for controlling unloading spring pretightning force
Adjusting rod；The nonreturn valve core being connected to for controlling through-flow slot with mounting hole is installed in the mounting hole, the mounting hole
Spring base is installed at lower ending opening, is equipped between spring base and nonreturn valve core in the mounting hole for by nonreturn valve core pressure
The tightly unidirectional spring at through-flow slot lower ending opening；It is described along the perforative slide opening that is axially arranged with of valve body in the nonreturn valve core
Push rod is slidably connected in slide opening, the upper end of the push rod is slidably connected in push-rod hole and offsets with the lower end of spool slide bar,
In the intercommunicating pore, pressure balance is limited between the upper end circumferential side wall of the push rod and the lower end surface of the off-load spool
Chamber；The unloading valve in-core is equipped with the third discharge orifice axially penetrated through, and the push rod upper end is equipped with to be connected to the third stream
The connectivity slot in hole and the pressure balance chamber.
Through the above technical solutions, the screw-in cartridge valve work when, P mouthful with low pressure and mass flow pump outlets be connected, A mouthfuls and
The outlet of high-pressure low-flow hydraulic pump is connected, and T mouthfuls are connected directly with fuel tank；Work as electric motor starting, when driving the rotation of duplex hydraulic pump,
The oil liquid of low pressure and mass flow hydraulic pump outlet is applied on nonreturn valve core through P mouthfuls, the second discharge orifice, through-flow slot and overcomes unidirectional spring
Active force pushes nonreturn valve core to move downward the lower end for opening through-flow slot, and oil liquid enters A mouthfuls, while high-pressure low-flow pump discharge
Oil liquid also enters A mouthfuls, realizes fast feed, A mouthfuls of pressure are lower at this time；When fast feed terminates, A mouthfuls of pressure rise to off-load bullet
When the pressure of spring setting, A mouthfuls of pressure oil overcomes the active force of unloading spring, spool cone by push rod promotion off-load spool upwards
Body leaves the upper end of intercommunicating pore, so that P mouthfuls of oil liquid is flowed into T mouthfuls of progress off-loads by the first discharge orifice and the first through-flow slot, simultaneously as A
Pressure difference is generated between mouth and P mouthfuls, under the action of unidirectional spring and A mouthfuls of oil pressure, nonreturn valve core, which moves upwards, is pressed on through-flow slot
Lower ending opening at, P mouthfuls are obstructed with A mouthfuls of truncations；Duplex hydraulic pump enters work feed operating condition, and only high-pressure low-flow is hydraulic
For oil pump feed to A mouthfuls, A mouthfuls of pressure can achieve higher pressure, and A mouthfuls of pressure makes off-load spool be constantly in unlatching off-load shape
State.Wherein it can change the pretightning force of unloading spring by adjusting adjusting rod, to set pressure unloading.
In further technical solution, locking nut is threaded with above swivel nut on the adjusting rod.
(3) beneficial effect
Compared with prior art, technical solution of the present invention has the advantage that
It is designed by plug-in structure, one-way function, unloading function is integrated together, volume compact, structure are simply closed
Reason, manufacturing cost are low.
Detailed description of the invention
Fig. 1 is structure chart of the invention；
Fig. 2 is the structure chart of valve body in the present invention；
Fig. 3 is the structure chart of off-load spool in the present invention；
Fig. 4 is hydraulic schematic diagram of the invention；
Fig. 5 is application principle figure of the invention.
Specific embodiment
It please refers to shown in Fig. 1-5, the present invention provides a kind of screw-in cartridge valve, including valve body 4, swivel nut 9, off-load spool 6, institute
It states and is equipped with interconnected threaded hole 401 in valve body 4 sequentially coaxially from the bottom to top, off-load spool bore 402, intercommunicating pore 403, pushes away
Rod aperture 404, through-flow slot 405, mounting hole 406；It is set on the circumference side of the valve body 4 in the lower end close to off-load spool bore 402
Have the T mouth being connected to off-load spool bore 402, the middle part of intercommunicating pore 403 be equipped with P mouthful, close to valve body 4 lower end equipped with and peace
Fill the A mouth that hole 406 is connected to；The off-load spool 6 includes the insert body 601 in off-load spool bore 402, and setting
For controlling the valve core cone 602 of 402 on-off of intercommunicating pore 403 and off-load spool bore, the valve core cone on insert body 601
602 are equipped with the spool slide bar 603 that is slidably connected in the intercommunicating pore 403, on the circumference side of the spool slide bar 603
It is equipped with annular grooving 604 at the valve core cone 602, forms the between the annular grooving 604 and the inner sidewall of intercommunicating pore 403
One through-flow slot 42；The first discharge orifice 4b for being connected to P mouthfuls He the first through-flow slot 42 is equipped in the valve body 4, and for being connected to P
Second discharge orifice 4a of mouth and through-flow slot 405；It is equipped in the threaded hole 401 for valve core cone 602 to be pressed on intercommunicating pore
The unloading spring 2b of 403 upper ends, the swivel nut 9 are mounted on the upper end of threaded hole 401, and 9 internal screw thread of swivel nut, which is connected with, to be used for
Control the adjusting rod 8 of unloading spring 2b pretightning force；It is equipped in the mounting hole 406 for controlling through-flow slot 405 and mounting hole
The nonreturn valve cores 3 of 406 connections, are equipped with spring base 1 at the lower ending opening of the mounting hole 406, in bullet in the mounting hole 406
The unidirectional spring 2a for being pressed on nonreturn valve core 3 at through-flow 405 lower ending opening of slot is equipped between spring abutment 1 and nonreturn valve core 3；
Along the perforative slide opening 301 that is axially arranged with of valve body 4 in the nonreturn valve core 3, push rod 5, institute are slidably connected in the slide opening 301
The upper end for stating push rod 5 is slidably connected in push-rod hole 404 and offsets with the lower end of spool slide bar 603, in the intercommunicating pore 403
It is interior, pressure balance chamber 4c is limited between the upper end circumferential side wall of the push rod 5 and the lower end surface of the off-load spool 6；It is described
The third discharge orifice 61 axially penetrated through is equipped in off-load spool 6,5 upper end of push rod is equipped with to be connected to 61 He of third discharge orifice
The connectivity slot 51 of the pressure balance chamber 4c.Locking nut 10 is threaded in the top of swivel nut 9 on the adjusting rod 8.
When the screw-in cartridge valve works, P mouthfuls are connected with the outlet of low pressure and mass flow pump 13, and A mouthfuls hydraulic with high-pressure low-flow
The outlet of pump 12 is connected, and T mouthfuls are connected directly with fuel tank 11；Work as electric motor starting, when driving the rotation of duplex hydraulic pump, low pressure and mass flow
The oil liquid that hydraulic pump 13 exports is applied on nonreturn valve core 3 through P mouthfuls, the second discharge orifice 4a, through-flow slot 405 overcomes unidirectional spring 2a's
Active force pushes nonreturn valve core 3 to move downward the lower end for opening through-flow slot 405, and oil liquid enters A mouthfuls, while high-pressure low-flow pump 12
The oil liquid of outlet also enters A mouthfuls, realizes fast feed, A mouthfuls of pressure are lower at this time；When fast feed terminates, A mouthfuls of pressure are risen to
When the pressure of unloading spring 2b setting, A mouthfuls of pressure oil pushes off-load spool 6 to overcome unloading spring 2b's upwards by push rod 5
Active force, valve core cone 602 leave the upper end of intercommunicating pore 403, flow P mouthfuls of oil liquid by the through-flow slot 42 of the first discharge orifice 4b and first
Enter T mouthfuls of progress off-loads, simultaneously as generating pressure difference between A mouthfuls and P mouthfuls, under the action of 2a and A mouthfuls of oil pressure of unidirectional spring, unidirectionally
Spool 3, which moves upwards, to be pressed at the lower ending opening of through-flow slot 405, and P mouthfuls obstructed with A mouthfuls of truncations；Duplex hydraulic pump enters work
Make feeding operating condition, only 12 fuel feeding of high-pressure low-flow hydraulic pump is to A mouthfuls, and A mouthfuls of pressure can achieve higher pressure, A mouthfuls
Pressure makes off-load spool 6 be constantly in unlatching unloading condition.Wherein it can change the pre- of unloading spring 2b by adjusting adjusting rod 8
Clamp force, to set pressure unloading.T mouthfuls of oil liquid are acted on into pressure balance chamber 4c after third discharge orifice 61, connectivity slot 51 and are unloaded
On the lower end surface of lotus spool 6, T mouthfuls of pressure is made to balance each other in the active force of 6 upper end active force of off-load spool and lower end, and P mouthfuls of oil
Active force of the liquid again on off-load spool 6 is also balance, therefore off-load spool 6 unloads only by the active force of unloading spring 2b and push rod 5
The available accurate control of the cracking pressure of lotus spool 6.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (2)
1. a kind of screw-in cartridge valve, which is characterized in that including valve body, swivel nut, off-load spool, in the valve body from the bottom to top successively
Coaxially it is equipped with interconnected threaded hole, off-load spool bore, intercommunicating pore, push-rod hole, through-flow slot, mounting hole；The valve body
P is equipped with equipped with the T mouth being connected to off-load spool bore, at the middle part of intercommunicating pore in the lower end close to off-load spool bore on circumference side
Mouth is equipped with the A mouth being connected to mounting hole in the lower end close to valve body；The off-load spool includes the valve in off-load spool bore
Core ontology, and be arranged on insert body for controlling the valve core cone of intercommunicating pore and off-load spool bore on-off, the spool
Cone is equipped with the spool slide bar that is slidably connected in the intercommunicating pore, close to spool on the circumference side of the spool slide bar
It is equipped with annular grooving at cone, forms the first through-flow slot between the annular grooving and the inner sidewall of intercommunicating pore；In the valve body
Equipped with the first discharge orifice for being connected to P mouthfuls He the first through-flow slot, and the second discharge orifice for being connected to P mouthfuls He through-flow slot；It is described
Unloading spring for valve core cone to be pressed on to intercommunicating pore upper end is installed, the swivel nut is mounted on threaded hole in threaded hole
Upper end, the swivel nut internal screw thread are connected with the adjusting rod for controlling unloading spring pretightning force；Installation is useful in the mounting hole
Spring base, the peace are installed at the nonreturn valve core that the through-flow slot of control is connected to mounting hole, the lower ending opening of the mounting hole
Fill the unidirectional bullet being equipped between spring base and nonreturn valve core in hole for being pressed on nonreturn valve core at through-flow slot lower ending opening
Spring；Along the perforative slide opening that is axially arranged with of valve body in the nonreturn valve core, push rod, the push rod are slidably connected in the slide opening
Upper end be slidably connected in push-rod hole and offset with the lower end of spool slide bar, in the intercommunicating pore, the upper end of the push rod
Pressure balance chamber is limited between circumferential side wall and the lower end surface of the off-load spool；The unloading valve in-core is equipped with and axially penetrates through
Third discharge orifice, the push rod upper end is equipped with to the connectivity slot that is connected to the third discharge orifice and the pressure balance chamber.
2. screw-in cartridge valve according to claim 1, which is characterized in that be threadedly coupled on the adjusting rod in the top of swivel nut
There is locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134281.4A CN108953633B (en) | 2018-09-27 | 2018-09-27 | A kind of screw-in cartridge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134281.4A CN108953633B (en) | 2018-09-27 | 2018-09-27 | A kind of screw-in cartridge valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108953633A CN108953633A (en) | 2018-12-07 |
| CN108953633B true CN108953633B (en) | 2019-08-23 |
Family
ID=64471997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811134281.4A Active CN108953633B (en) | 2018-09-27 | 2018-09-27 | A kind of screw-in cartridge valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108953633B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878779B (en) * | 2019-11-28 | 2021-07-23 | 浙江万得凯流体设备科技股份有限公司 | Pressure reducing valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427142A (en) * | 1992-08-29 | 1995-06-27 | Westfalia Becorit Industrietechnik Gmbh | Valve device for use in electro-hydraulic control systems of mining installations |
| CN102996556A (en) * | 2012-12-04 | 2013-03-27 | 怀特(中国)驱动产品有限公司 | Direct-acting type hydraulic threaded cartridge balanced valve |
| CN105952703A (en) * | 2016-06-22 | 2016-09-21 | 宁波文泽机电技术开发有限公司 | Threaded cartridge type balance valve |
| CN207178338U (en) * | 2017-07-24 | 2018-04-03 | 浙江华益精密机械股份有限公司 | A kind of screw-in cartridge valve |
| CN108167256A (en) * | 2017-12-28 | 2018-06-15 | 邵立坤 | A kind of plug-in trimmer valve |
| CN108561358A (en) * | 2018-01-22 | 2018-09-21 | 邵立坤 | A kind of differential circuit switching valve and hydraulic differential circuit |
-
2018
- 2018-09-27 CN CN201811134281.4A patent/CN108953633B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427142A (en) * | 1992-08-29 | 1995-06-27 | Westfalia Becorit Industrietechnik Gmbh | Valve device for use in electro-hydraulic control systems of mining installations |
| CN102996556A (en) * | 2012-12-04 | 2013-03-27 | 怀特(中国)驱动产品有限公司 | Direct-acting type hydraulic threaded cartridge balanced valve |
| CN105952703A (en) * | 2016-06-22 | 2016-09-21 | 宁波文泽机电技术开发有限公司 | Threaded cartridge type balance valve |
| CN207178338U (en) * | 2017-07-24 | 2018-04-03 | 浙江华益精密机械股份有限公司 | A kind of screw-in cartridge valve |
| CN108167256A (en) * | 2017-12-28 | 2018-06-15 | 邵立坤 | A kind of plug-in trimmer valve |
| CN108561358A (en) * | 2018-01-22 | 2018-09-21 | 邵立坤 | A kind of differential circuit switching valve and hydraulic differential circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108953633A (en) | 2018-12-07 |
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Effective date of registration: 20190730 Address after: 201508 No. 350 Nanyang Port East Road, Shanyang Town, Jinshan District, Shanghai Applicant after: Shanghai Jianglang Science and Technology Co.,Ltd. Address before: Room 1-4-1002, Tongyayuan District, Xizhong District, Yanggu County Railway Station, Liaocheng City, Shandong Province Applicant before: Shao Yanrong |
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Address after: 201508 No. 350, nanyanggang East Road, Shanyang Town, Jinshan District, Shanghai Patentee after: Jianglang Technology Co.,Ltd. Address before: 201508 No. 350, nanyanggang East Road, Shanyang Town, Jinshan District, Shanghai Patentee before: Shanghai Jianglang Science and Technology Co.,Ltd. |