CN108131479A - A kind of one-way throttle valve - Google Patents

A kind of one-way throttle valve Download PDF

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Publication number
CN108131479A
CN108131479A CN201711392925.5A CN201711392925A CN108131479A CN 108131479 A CN108131479 A CN 108131479A CN 201711392925 A CN201711392925 A CN 201711392925A CN 108131479 A CN108131479 A CN 108131479A
Authority
CN
China
Prior art keywords
valve
flow
spool
slot
flow slot
Prior art date
Application number
CN201711392925.5A
Other languages
Chinese (zh)
Other versions
CN108131479B (en
Inventor
陈艳艳
Original Assignee
宁波文泽机电技术开发有限公司
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 宁波文泽机电技术开发有限公司 filed Critical 宁波文泽机电技术开发有限公司
Priority to CN201711392925.5A priority Critical patent/CN108131479B/en
Publication of CN108131479A publication Critical patent/CN108131479A/en
Application granted granted Critical
Publication of CN108131479B publication Critical patent/CN108131479B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20Excess-flow valves
    • F16K17/22Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • F16K15/06Check valves with guided rigid valve members with guided stems
    • F16K15/063Check valves with guided rigid valve members with guided stems the valve being loaded by a helicoidal spring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/18Check valves with actuating mechanism; Combined check valves and actuated valves

Abstract

The invention discloses a kind of one-way throttle valves, include valve body, the first through-flow slot and the second through-flow slot are provided in valve body, partition board is provided between first through-flow slot and the second through-flow slot, the first through flow hole being connected with the described first through-flow slot is offered on the outer wall of valve body, the second through flow hole being connected with the described second through-flow slot is further opened on the outer wall of valve body;The spool that can be moved axially is provided in valve body, guide rod is provided on spool, spring is arranged with outside the guide rod, offers third through flow hole on the outer wall of the spool both sides on valve body, spool offers throttle orifice;When spool is located at left limit, throttle orifice is conducted with the third through flow hole, is blocked between the first through-flow slot and the second through-flow slot, when spool is located at right limit, end between throttle orifice and the third through flow hole, be connected between the first through-flow slot and the second through-flow slot.It the advantage is that:Integrate check valve and throttle valve, rational in infrastructure, compact, flow resistance is small.

Description

A kind of one-way throttle valve
Technical field
The present invention relates to throttle valve manufacturing technology field, a kind of especially one-way throttle valve.
Background technology
The effect of common check valve is to make hydraulic oil that can only flow in one direction, mustn't it reversely flow backwards, it is common to throttle The effect of valve is to control the flow control valve of fluid flow, by throttle valve and unidirectionally by change throttling section or chock length Valve parallel connection is then combined into one-way throttle valve, i.e., specific direction can open check valve, no throttling action, with specific direction phase Anti- direction can not open check valve, can only be flowed out from throttle valve, there is throttling action.One-way throttle valve generally used now is all basic It is made of two elements, a valve pocket for having both unidirectional valve action adds a spool with throttle orifice to be composed, this list To throttle valve, not only appearance and size is larger, requires compact-sized occasion difficult to install at some, and no pressure is mended during throttling Function is repaid, the instability of flow when loading variation loads the then flow-reduction that becomes larger, and loads the then flow increase that becomes smaller.
Invention such as Patent No. 201410520938.6 entitled " one-way throttle valve " specially discloses a kind of one-way throttle Valve, including half-duplex channel and throttling passage, half-duplex channel flows to valve port B by valve port A, and half-duplex channel is by way of throttling channel one, radial direction Hole, axial hole;Throttling passage flows to valve port A by valve port B, and throttling passage is by way of axial hole, radial hole, throttling channel one, throttling channel Two;Throttling channel one, throttling channel two, radial hole, axial hole are arranged on valve body, and valve port A and valve port B are arranged on valve seat, There is cavity one, valve body is arranged in cavity one and can be slided between valve port A and valve port B in valve seat.Although above-mentioned patent, can To realize one-way throttle function, but during its throttling, flow area size, no pressure compensation function, load variation are only changed When output flow change greatly;And when realizing one-way function, fluid will also be flowed through from throttling channel, and flow resistance is larger, be not suitable for It is used in low-pressure hydraulic system.
Invention content
The technical problem to be solved by the invention for the present situation of prior art is to provide simple and reasonable for structure, costs It is low, there is pressure compensation and a kind of small one-way throttle valve of flow resistance.
Technical solution is used by the present invention solves above-mentioned technical problem:
A kind of one-way throttle valve includes valve body, the first through-flow slot and the second through-flow slot is provided in valve body, first is through-flow Partition board is provided between slot and the second through-flow slot, it is logical that first to be connected with the described first through-flow slot is offered on the outer wall of valve body Discharge orifice is further opened with the second through flow hole being connected with the described second through-flow slot on the outer wall of valve body;Being provided in valve body can The spool of axial movement is provided with guide rod on spool, is arranged with spring outside the guide rod, in the spool both sides on valve body Third through flow hole is offered on outer wall, spool offers throttle orifice;When spool is located at left limit, throttle orifice leads to the third Discharge orifice is conducted, and is blocked between the first through-flow slot and the second through-flow slot, when spool is located at right limit, throttle orifice and described the End between threeway discharge orifice, be connected between the first through-flow slot and the second through-flow slot.
The technical measures of optimization further include:
Above-mentioned spool can be axially movably assemblied on guide rod, and being provided on guide rod can be in guide rod axial direction The first spring base and second spring seat slided, spring is provided between the first spring base and second spring seat.
Thread segment is provided on above-mentioned guide rod, nut is provided on the outside of the second spring seat on thread segment.
Above-mentioned spool is made of cylindrical portion, tapered portion and cylindrical portion, and the diameter of cylindrical portion is less than the cylindrical portion Outer diameter, throttle orifice are set in tapered portion.
Baffle ring is provided in above-mentioned valve body, when spool is located at right limit, tapered portion offsets with the baffle ring.
Above-mentioned partition board is provided centrally with centre bore, and when spool is located at left limit, the cylindrical portion of spool is positioned at described In centre bore.
The first above-mentioned through-flow slot is obliquely installed.
The second above-mentioned through-flow slot is obliquely installed.
Above-mentioned valve body and installation position bolt.
A kind of one-way throttle valve of the present invention, integrates check valve and throttle valve, rational in infrastructure, compact, by valve The spool that can be moved axially is provided with, and throttle orifice is offered on spool in vivo, (the throttling shape when spool is located at left limit State), it is blocked between the first through-flow slot and the second through-flow slot, throttle orifice is conducted with third through flow hole, and fluid is through-flow from third Hole flows into valve body, after throttle orifice, is flowed out from the first through flow hole;When spool is located at right limit (unidirectional state), first is through-flow It is connected between slot and the second through-flow slot, ends between throttle orifice and the third through flow hole, fluid flows into valve from the first through flow hole Body, a part are flowed out from the second through flow hole, and another part is flowed out through throttle orifice from valve body right side.This one-way throttle valve flow resistance It is small, coordinate guide rod on spring setting, make this one-way throttle valve have pressure compensation, be its performance more preferably.
Description of the drawings
Fig. 1 is structure diagram when spool of the present invention is located at left limit;
Fig. 2 is the structure diagram of spool in Fig. 1;
Fig. 3 is structure diagram when spool of the present invention is located at right limit.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing embodiment.
Structure diagram for the present invention as shown in Figure 1 to Figure 3,
Reference numeral therein is:A mouthfuls, B mouthfuls, valve body 1, the first through flow hole 1a, the second through flow hole 1b, third through flow hole 1c, the first through-flow slot 11, the second through-flow slot 12, partition board 13, centre bore 13a, spool 2, throttle orifice 2a, cylindrical portion 21, tapered portion 22nd, cylindrical portion 23, guide rod 3, thread segment 3a, nut 31, spring 4, the first spring base 41, second spring seat 42, baffle ring 5, figure Middle arrow direction represents fluid flow direction.
As shown in Figure 1 to Figure 3,
A kind of one-way throttle valve includes valve body 1, and the first through-flow 11 and second through-flow slot 12 of slot is provided in valve body 1, the Partition board 13 is provided between one through-flow 11 and second through-flow slot 12 of slot, is offered on the outer wall of valve body 1 and the described first through-flow slot It is logical to be further opened be connected with the described second through-flow slot 12 second on the outer wall of valve body 1 by 11 the first through flow hole 1a being connected Discharge orifice 1b;The spool 2 that can be moved axially is provided in valve body 1, guide rod 3 is provided on spool 2, is arranged outside the guide rod 3 There is spring 4, offer third through flow hole 1c on the outer wall of 2 both sides of spool on valve body 1, spool 2 offers throttle orifice 2a; When spool 2 is located at left limit, throttle orifice 2a is conducted with the third through flow hole 1c, the first through-flow 11 and second through-flow slot of slot It is blocked between 12, when spool 2 is located at right limit, ends between throttle orifice 2a and the third through flow hole 1c, first is through-flow It is connected between 11 and second through-flow slot 12 of slot.
In embodiment, spool 2 can be axially movably assemblied on guide rod 3, and being provided on guide rod 3 can be oriented to Bar the first spring base 41 and second spring seat 42 in axial sliding, bullet is provided between the first spring base 41 and second spring seat 42 Spring 4.First spring base 41 and second spring seat 42 are set, facilitate the installation of spring 4.
In embodiment, thread segment 3a is provided on guide rod 3, is set on thread segment 3a in the outside of the second spring seat 42 It is equipped with nut 31.
Section 3a and nut 31 are threaded, by the precession position of adjusting nut 31, is capable of the pretightning force of adjustment spring 4, So as to the Opening pressure of 1 right side of regulation valve body.
In embodiment, spool 2 is made of cylindrical portion 21, tapered portion 22 and cylindrical portion 23, and the diameter of cylindrical portion 23 is less than The outer diameter of the cylindrical portion 21, throttle orifice 2a are set in tapered portion 22.
In embodiment, baffle ring 5 is provided in valve body 1, when spool 2 is located at right limit, tapered portion 22 and 5 phase of baffle ring It supports.
In embodiment, partition board 13 is provided centrally with centre bore 13a, when spool 2 is located at left limit, the cylinder of spool 2 Portion 21 is located in the centre bore 13a.
In embodiment, the first through-flow slot 11 is obliquely installed.
In embodiment, the second through-flow slot 12 is obliquely installed.
First through-flow 11 and second through-flow slot 12 of slot is obliquely installed, and the volume second that can increase by the first through-flow slot 11 is through-flow Slot 12 increases the flow under unidirectional state.
In embodiment, valve body 1 and installation position bolt.
Operation principle:
This one-way throttle valve integrates check valve and throttle valve, compact-sized, the external screw thread set by 1 outside of valve body Valve is bolted in installation position, the both ends of installation position are respectively A mouthfuls and B mouthfuls.
Throttle:As shown in Figure 1, under the elastic force effect of spring 4, the outside of the first spring base 41 and the right side of valve body 1 End face offsets, so as to which by the right end face closure of valve body 1, the cylindrical portion 21 of spool 2 is located in the centre bore 13a, and first is through-flow It is blocked between 11 and second through-flow slot 12 of slot, throttle orifice 2a is conducted with the third through flow hole 1c.When fluid from B mouthfuls into Enter, after third through flow hole 1c enters valve body 1, flow out valve body 1 through throttle orifice 2a, the first through-flow slot 11, the first through flow hole 1a, most Eventually from A mouthfuls of outflows.
When A mouthfuls of loads become small, the pressure difference increase between B mouthfuls and A mouthfuls acts on the resultant force increase on spool 2, the first bullet The outside of spring abutment 41 is limited by the right end of valve body 1, and the outside of second spring seat 42 is limited by nut 31, and pressure differential will push spool 2 are moved to the left, and spool 2 is moved to the left together with guide rod 3, compress spring 4;Spool 2 is moved to the left, and makes the first through-flow slot 11 Aperture reduce, throttle orifice 2a outlet pressures increase, until reaching equilibrium state.If A mouthfuls of loads become larger, between B mouthfuls and A mouthfuls Pressure difference reduce, the resultant force acted on spool 2 reduces, and spool 2 moves right under force action, makes opening for the first through-flow slot 11 Degree increase, throttle orifice 2a outlet pressures reduce, until reaching equilibrium state.This guarantees load change in the case of, B mouthful with Pressure difference between A mouthfuls is constant, and the flow constant by A mouthfuls of outputs is constant.
Unidirectional state:As shown in figure 3, fluid enters spool 2 from A mouthfuls of entrance through the first through flow hole 1a, the first through-flow slot 11 Cylindrical portion 21 in, due to the throttling action of throttle orifice 2a, make to generate larger pressure difference between A mouthfuls and B mouthfuls, under differential pressure action, Spool 2 moves right, and until tapered portion 22 and baffle ring 5 offset, at this moment, cylindrical portion 21 is left the centre bore 13a of partition board 13, made First through-flow 11 and second through-flow slot 12 of slot is connected, meanwhile, the first spring base 41 leaves the right side of valve body 1, makes the right side of valve body 1 End face is opened wide.The fluid flowed into this way, a part is after the second through flow hole 1b flows out valve body 1 from B mouthfuls of outflows, another part warp knuckle Discharge orifice 2a flows out after being flowed out from the right side of valve body 1 from B mouthfuls.
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not It can depart from the scope of the present invention.

Claims (9)

1. a kind of one-way throttle valve includes valve body (1), it is characterized in that:The first through-flow slot is provided in the valve body (1) (11) and the second through-flow slot (12) partition board (13), is provided between the described first through-flow slot (11) and the second through-flow slot (12), The first through flow hole (1a) being connected with the described first through-flow slot (11) is offered on the outer wall of the valve body (1), it is described The second through flow hole (1b) being connected with the described second through-flow slot (12) is further opened on the outer wall of valve body (1);The valve body (1) spool (2) that can be moved axially is provided in, is provided with guide rod (3) on the spool (2), the guide rod (3) is outside Spring (4) is arranged with, third through flow hole (1c), institute are offered on the outer wall of the spool (2) both sides on the valve body (1) The spool (2) stated offers throttle orifice (2a);When spool (2) is positioned at left limit, the throttle orifice (2a) and the third Through flow hole (1c) is conducted, and is blocked between the described first through-flow slot (11) and the second through-flow slot (12), when spool (2) is located at During right limit, end between the throttle orifice (2a) and the third through flow hole (1c), the described first through-flow slot (11) and It is connected between second through-flow slot (12).
2. a kind of one-way throttle valve according to claim 1, it is characterized in that:Being provided on the guide rod (3) can In guide rod (3) the first spring base (41) and second spring seat (42) in axial sliding, first spring base (41) and Spring (4) is provided between two spring bases (42).
3. a kind of one-way throttle valve according to claim 2, it is characterized in that:Screw thread is provided on the guide rod (3) Section (3a) is provided with nut (31) on the thread segment (3a) on the outside of the second spring seat (42).
4. a kind of one-way throttle valve according to claim 3, it is characterized in that:The spool (2) is by cylindrical portion (21), cone Shape portion (22) and cylindrical portion (23) are formed, and the diameter of the cylindrical portion (23) is less than the outer diameter of the cylindrical portion (21), institute The throttle orifice (2a) stated is set in tapered portion (22).
5. a kind of one-way throttle valve according to claim 4, it is characterized in that:Baffle ring is provided in the valve body (1) (5), when spool (2) is positioned at right limit, the tapered portion (22) offsets with the baffle ring (5).
6. a kind of one-way throttle valve according to claim 5, it is characterized in that:In being provided centrally with of the partition board (13) Heart hole (13a), when spool (2) is positioned at left limit, the cylindrical portion of the spool (2) is located in the centre bore (13a).
7. a kind of one-way throttle valve according to claim 6, it is characterized in that:The first through-flow slot (11), which tilts, to be set It puts.
8. a kind of one-way throttle valve according to claim 7, it is characterized in that:The second through-flow slot (12), which tilts, to be set It puts.
9. a kind of one-way throttle valve according to claim 8, it is characterized in that:The valve body (1) and installation position phase spiral shell It connects.
CN201711392925.5A 2017-12-21 2017-12-21 A kind of one-way throttle valve CN108131479B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711392925.5A CN108131479B (en) 2017-12-21 2017-12-21 A kind of one-way throttle valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711392925.5A CN108131479B (en) 2017-12-21 2017-12-21 A kind of one-way throttle valve

Publications (2)

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CN108131479A true CN108131479A (en) 2018-06-08
CN108131479B CN108131479B (en) 2019-05-28

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CN201711392925.5A CN108131479B (en) 2017-12-21 2017-12-21 A kind of one-way throttle valve

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110671519A (en) * 2019-10-12 2020-01-10 邵玉强 Tubular flow control valve

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29720625U1 (en) * 1996-12-16 1998-02-12 Macrifin Spa Control valve with pressure value display
US20070193633A1 (en) * 2006-02-17 2007-08-23 Conbraco Industries, Inc. Self-contained check valve module
CN202171046U (en) * 2011-07-25 2012-03-21 李耀强 Pressure adjustor
CN202510447U (en) * 2012-04-11 2012-10-31 依格流体技术(嘉兴)有限公司 Flow regulating valve
CN203686281U (en) * 2014-01-17 2014-07-02 安徽金达利液压有限公司 Ultrahigh-pressure water overflow valve
CN204628680U (en) * 2015-04-20 2015-09-09 东风汽车公司 Automobile tailboard constant load pressure-compensated valve
CN108223473A (en) * 2018-01-17 2018-06-29 邵立坤 A kind of one way sequence valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29720625U1 (en) * 1996-12-16 1998-02-12 Macrifin Spa Control valve with pressure value display
US20070193633A1 (en) * 2006-02-17 2007-08-23 Conbraco Industries, Inc. Self-contained check valve module
CN202171046U (en) * 2011-07-25 2012-03-21 李耀强 Pressure adjustor
CN202510447U (en) * 2012-04-11 2012-10-31 依格流体技术(嘉兴)有限公司 Flow regulating valve
CN203686281U (en) * 2014-01-17 2014-07-02 安徽金达利液压有限公司 Ultrahigh-pressure water overflow valve
CN204628680U (en) * 2015-04-20 2015-09-09 东风汽车公司 Automobile tailboard constant load pressure-compensated valve
CN108223473A (en) * 2018-01-17 2018-06-29 邵立坤 A kind of one way sequence valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110671519A (en) * 2019-10-12 2020-01-10 邵玉强 Tubular flow control valve

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