CN104482231A - Gas injection valve with buffer mechanism - Google Patents

Gas injection valve with buffer mechanism Download PDF

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Publication number
CN104482231A
CN104482231A CN201410825749.XA CN201410825749A CN104482231A CN 104482231 A CN104482231 A CN 104482231A CN 201410825749 A CN201410825749 A CN 201410825749A CN 104482231 A CN104482231 A CN 104482231A
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CN
China
Prior art keywords
valve
described
valve block
rear
front
Prior art date
Application number
CN201410825749.XA
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Chinese (zh)
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CN104482231B (en
Inventor
吴龙龙
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潍坊力创电子科技有限公司
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Priority to CN201410825749.XA priority Critical patent/CN104482231B/en
Publication of CN104482231A publication Critical patent/CN104482231A/en
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Publication of CN104482231B publication Critical patent/CN104482231B/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
    • F16K1/00Lift 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
    • 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
    • F16K1/00Lift 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
    • F16K1/32Details
    • 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
    • F16K1/00Lift 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
    • F16K1/32Details
    • F16K1/34Cutting-off parts, e.g. valve members, seats
    • F16K1/36Valve members
    • 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
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644One-way valve
    • F16K31/0655Lift valves

Abstract

The invention relates to a gas injection valve, in particular to the gas injection valve with a buffer mechanism. The gas injection valve comprises a valve body, a valve rod mounted in the valve body, a valve plate and a moving armature coaxial with the valve rod, and an electromagnetic coil, wherein the valve rod is of a columnar structure; a valve rod sleeve is arranged between the valve rod and the valve body and is fixedly connected with the valve body; an annular boss is arranged on the rod; an annular buffer groove is formed in the end part of the valve rod sleeve corresponding to the annular boss; the inner ring surface of the buffer groove is communicated with an inner cavity of the valve rod sleeve; the outer ring surface of the buffer groove is matched with the outer ring surface of the boss. In the later stage of closing the valve plate of the injection valve, the annular boss of the valve rod is inserted into the buffer groove in the end part of the valve rod sleeve, air in the buffer groove is closed and compressed, the compressed air in the buffer groove has a buffer function, the impact on a valve seat caused by the valve plate can be remarkably reduced, the abrasion is reduced, and the service lives of parts are prolonged.

Description

With the gas spray valve of damping mechanism

Technical field

The present invention relates to a kind of gas spray valve, specifically a kind of gas spray valve with damping mechanism.

Background technique

Emitted dose, response time and working life are the important parameters weighing gas spray valve quality, because the density of gas is lower, the latus rectum size of the valve needed when injection flow is larger is also larger, but larger aero operating pressure acts on valve, inhibition can be produced, the restriction response time to valve opening and closing campaign.Therefore, adopt the high speed electromagnetic gas spray valve of Electromagnetic Drive generally only can adapt to less traffic requirement and lower gas pressure condition, the high-speed quantitative injection under requiring compared with large discharge and elevated pressures cannot be met.

The EGR valve that Delphi company of the U.S. produces, adopt the air inlet of balanced type double valve, the equal diameters of two valve blocks, it is zero that atmospheric pressure acts on making a concerted effort on valve rod, and this structure can meet the requirement of Great flow rate and high speed solenoid valve.But because the manufacturability of processing and assembling limits, can only adopt the production technology of split manufacture, combination installation, two valve blocks manufacture respectively, one is assembled into by the technique such as welding or press-fit again in assembly process, its complex structure, manufacturability is poor, and sealing is comparatively difficult to ensure card.

Another Chinese patent 2014104889556 of the applicant discloses one " integrated type double valve gas spray valve and assembly method thereof ", adopt the double valve sheet valve that integral structure, diameter are different, there is the features such as structure is simple, corresponding speed fast, easy assembling.

Owing to there is moving element in valve rod, all sliding friction is there is between the valve rod of above-mentioned various gas spray valve and valve body, owing to there is no rational lubricating structure, sliding friction between valve rod and valve body not only increases the resistance to motion of valve rod, extend the response time, also easily cause the excessive wear of valve rod, affect working life.In addition, make because valve block and valve seat are metallic material, the valve block of high-speed motion frequently moves and easily produces wearing and tearing, causes poorly sealed, and acceleration parts are aging.

Summary of the invention

The present invention be solve the problem provide a kind of stem movement flexibly, fast response time, the gas spray valve with damping mechanism that valve block and valve seat clash into dynamics can be slowed down.

The technological scheme that the present invention adopts for technical solution problem is:

Gas spray valve with damping mechanism of the present invention comprises valve body, the valve rod be arranged in valve body, the valve block coaxially arranged with valve rod and moving armature, electromagnetic coil, described valve rod is column structure, valve rod sleeve pipe is provided with between described valve rod and valve body, described valve rod sleeve pipe is fixedly connected with valve body, described valve rod is provided with the boss of ring-type, end corresponding to the valve rod sleeve pipe of annular boss is provided with the dashpot of annular, the inner ring surface of described dashpot and the inner space of valve rod sleeve pipe, the outer ring surface of dashpot mates with the outer ring surface of boss.

Be provided with the oil storage tank of ring structure between the outer surface of described valve rod sleeve pipe and valve body, in described oil storage tank, be provided with the oil duct of connecting valve rod bush inner chamber, described valve body is provided with the pouring orifice being communicated with oil storage tank.

Described valve block comprises front valve block arranged in parallel and rear valve block, the connecting rod that integration is fixedly connected with is provided with between described front valve block and rear valve block, described valve rod is fixedly connected on the front end of front valve block, described moving armature is arranged on the rear end of rear valve block, described electromagnetic coil is fixedly connected on the rear end of valve body, the front valve block hole of the front valve block of coupling and the rear valve block hole of the rear valve block of coupling is provided with in the inner chamber of described valve body, the diameter of described front valve block is less than the diameter of rear valve block, and the diameter of front valve block is less than the internal diameter in rear valve block hole.

Described front valve block hole and rear valve block hole are separately positioned on front valve seat and rear valve base, and described front valve seat and rear valve base are parallel to each other and are arranged in the inner chamber of valve body, and the external diameter of front valve seat is less than the external diameter of rear valve base; The sidewall of described valve body is provided with penetration hole and air outlet hole, and described penetration hole is communicated with the forward and backward two ends of valve body, and described air outlet hole is communicated to the inner chamber of the valve body between front valve block and rear valve block; The front end of described valve rod is fixedly connected with spring seat, is provided with return spring between described spring seat and valve body.

Owing to have employed said structure, the later stage that valve block is closed, the annular boss of valve rod is inserted in the dashpot of valve stem casing tube end, by the air seal compression in dashpot, pressurized air in dashpot plays buffer function, significantly can alleviate the impact of valve block to valve seat, reduce wear, extend parts life-span.Be provided with lubricating structure between valve rod and valve body in addition, the resistance to motion of valve rod be little, fast response time, long service life; Meanwhile, be provided with the effect that lubricant oil also plays sealing dashpot between valve rod and valve body, promote the performance of air cushioning effect; In addition, this gas spray valve adopts integrated double valve air intake structure, jet stream of gas amount is large, structure simply, is easily assembled, avoid assembling difficulty isostructuralism, manufacturability, sealing problem that combined type dual-valve structure brings, and make the power major part of gas pressure on valve rod obtain balance, achieve the high-speed response of large discharge electromagnetic injection valve, preparation process is simple, easily realizes industrialization.

Accompanying drawing explanation

Fig. 1 is the structural representation of one embodiment of the invention.

Fig. 2 is the structure for amplifying schematic diagram of valve block closed condition lower valve rod and valve body mating part.

Fig. 3 is the structure for amplifying schematic diagram of valve block open mode lower valve rod and valve body mating part.

Fig. 4 is the structural representation of valve rod sleeve pipe.

Fig. 5 is the structural representation of valve rod.

Embodiment

As Fig. 1, shown in Fig. 2, gas spray valve with damping mechanism of the present invention comprises valve body 1, be arranged on the valve rod 2 in valve body 1, the valve block 3 that arrange coaxial with valve rod 2, 4 and moving armature 5, electromagnetic coil 6, described valve rod 2 is column structure, valve rod sleeve pipe 21 is provided with between described valve rod 2 and valve body 1, described valve rod sleeve pipe 21 is fixedly connected with valve body 1, described valve rod 2 is provided with the boss 24 of ring-type, end corresponding to the valve rod sleeve pipe 21 of annular boss 24 is provided with the dashpot 25 of annular, the inner ring surface of described dashpot 25 and the inner space of valve rod sleeve pipe 21, the outer ring surface of dashpot 25 mates with the outer ring surface of boss 24.

As shown in Figure 2 and Figure 3, when valve block 3,4 is opened time, boss 24 is away from dashpot 25; When the later stage that valve block is closed, boss 24 injects in dashpot 25, because the gap between valve rod 2 and valve rod sleeve pipe 21 is very little, boss 24 is by after the end-enclosed of dashpot 25, air in dashpot 25 is compressed, and by gap tiny between each moving element gas leakage, buffer function can only be played to the motion of valve block, effectively can alleviate the shock dynamics of valve block and valve seat.

As Figure 1 and Figure 4, the oil storage tank 22 of ring structure is provided with between the outer surface of described valve rod sleeve pipe 21 and valve body 1, this oil storage tank 22 can be arranged on the outer surface of valve rod sleeve pipe 21 as shown in drawings, also can be arranged on inwall that valve body 1 contacts with valve rod sleeve pipe 21, its objective is the cavity that a loop configuration is set in the periphery of valve rod 2, for storing lubricant oil.The oil duct 23 of connecting valve rod bush 21 inner chamber is provided with in described oil storage tank 22, described valve body 1 is provided with the pouring orifice 11 being communicated with oil storage tank 22, pouring orifice 11, for adding lubricant oil in oil storage tank 22, for preventing oil leak, can also arrange stopper or sealing bolt on pouring orifice 11; For making lubricant oil be evenly distributed, described oil duct 23 has multiple, distributes equably around valve rod 2.During use, lubricating grease or lubricant oil are injected by pouring orifice 11 and are stored in oil storage tank 22, a small amount of lubricating grease or lubricant oil infiltrate the inner chamber of valve rod sleeve pipe 21 by oil duct 23, and along with the motion of valve rod 2, lubricating grease or lubricant oil are diffused into valve rod 2 gradually with on the surface of contact of valve rod sleeve pipe 21, play lubrication, effectively can reduce friction factor, reduce the resistance to motion of valve rod 2, improve speed of response, delay mechanical wear, increase the service life.

As shown in Figure 5, described valve block 3,4 comprises front valve block 3 arranged in parallel and rear valve block 4, the connecting rod 10 that integration is fixedly connected with is provided with between front valve block 3 and rear valve block 4, described valve rod 2 is fixedly installed on the front end of front valve block 3, described moving armature 5 is arranged on the rear end of rear valve block 4, described electromagnetic coil 6 is fixedly connected on the rear end of valve body 1, is provided with the front valve block hole 31 of the front valve block 3 of coupling and the rear valve block hole 41 of the rear valve block 4 of coupling in the inner chamber of described valve body 1.During use, utilize the suction of electromagnetic coil 6 to drive moving armature 5 and front valve block 3 and rear valve block 4 to move axially, realize opening or the action of cut-off valve film perforation.

Described front valve block 3 and rear valve block 4 are fixedly connected into the monolithic construction that can not be split by connecting rod 10, the integral structure that overall processing can be adopted shaping when concrete production.The diameter of described front valve block 3 is less than the diameter of rear valve block 4, and the diameter of front valve block 3 is less than the internal diameter in rear valve block hole 41, so that front valve block 3 can be installed on front valve block hole 31 through rear valve block hole 41.

As one embodiment of the present of invention, front valve block hole 31 and rear valve block hole 41 can be direct processing sets up on the inwall of valve body 1, also can be as described below:

Front valve block hole 31 and rear valve block hole 41 are arranged on front valve seat 32 and rear valve base 42, and the external diameter of front valve seat 32 is less than the external diameter of rear valve base 42.Described front valve seat 32 and rear valve base 42 be parallel to each other be arranged on valve body 1 inner chamber in.

In addition, the sidewall of described valve body 1 is provided with penetration hole 7 and air outlet hole 81, described penetration hole 7 is communicated with the forward and backward two ends of valve body 1, the quantity of penetration hole 7 can arrange one or more according to design parameter, the sectional shape of penetration hole 7 can be that circle also can circular arc, to improve ventilation flow rate.The axis of described air outlet hole 81 and the axes normal of valve body 1 are also communicated to the inner chamber of the valve body 1 between front valve block 3 and rear valve block 4; The gas entered by front valve block hole 31 and rear valve block hole 41 is all discharged by air outlet hole 81, realizes double valve large discharge gas and sprays.

Certainly, the front end of described valve rod 2 is fixedly connected with spring seat 8, is provided with return spring 9 between described spring seat 8 and valve body 1, and the front end of valve body 1 is also provided with the inlet hole 91 be communicated to before front valve block hole 31.The gas that suction port enters enters into the space in front, front valve block hole 31 on the one hand by inlet hole 91, the space at rear, rear valve block hole 41 is entered on the other hand by penetration hole 7, and respectively to front, to after-applied pressure, once the valve block of correspondence is opened, gas can be entered in middle cavity by front valve block hole 31 and rear valve block hole 41 simultaneously.

Valve rod 2 and front valve block 3 and rear valve block 4 push away forward by the thrust of return spring 9, offset due to front valve block 3 and the different pressure difference caused of rear valve block 4 diameter simultaneously, are closed in front valve block hole 31 and rear valve block hole 41.

As shown in Figure 1 and Figure 2, for making structure more reasonable, can also in the front end of valve body 1, the arranged outside valve casing 19 of return spring 9, the front end of valve casing 19 is provided with gas access 20, and the rear end of valve casing 19 is fixedly set on valve body 1 by seal ring.

Claims (4)

1. with the gas spray valve of damping mechanism, comprise valve body (1), be arranged on the valve rod (2) in valve body (1), the valve block (3 that arrange coaxial with valve rod (2), 4) and moving armature (5), electromagnetic coil (6), described valve rod (2) is column structure, valve rod sleeve pipe (21) is provided with between described valve rod (2) and valve body (1), described valve rod sleeve pipe (21) is fixedly connected with valve body (1), it is characterized in that: the boss (24) described valve rod (2) being provided with ring-type, end corresponding to the valve rod sleeve pipe (21) of annular boss (24) is provided with the dashpot (25) of annular, the inner ring surface of described dashpot (25) and the inner space of valve rod sleeve pipe (21), the outer ring surface of dashpot (25) mates with the outer ring surface of boss (24).
2. the gas spray valve with damping mechanism according to claim 1, it is characterized in that: the oil storage tank (22) being provided with ring structure between the outer surface of described valve rod sleeve pipe (21) and valve body (1), be provided with the oil duct (23) of connecting valve rod bush (21) inner chamber in described oil storage tank (22), described valve body (1) be provided with the pouring orifice (11) being communicated with oil storage tank (22).
3. the gas spray valve with damping mechanism according to claim 1 and 2, it is characterized in that: described valve block (3, 4) front valve block (3) arranged in parallel and rear valve block (4) is comprised, the connecting rod that integration is fixedly connected with is provided with between described front valve block (3) and rear valve block (4), described valve rod (2) is fixedly connected on the front end of front valve block, described moving armature (5) is arranged on the rear end of rear valve block, described electromagnetic coil (6) is fixedly connected on the rear end of valve body (1), the front valve block hole (31) of the front valve block of coupling and the rear valve block hole (41) of the rear valve block of coupling is provided with in the inner chamber of described valve body (1), the diameter of described front valve block (3) is less than the diameter of rear valve block (4), and the diameter of front valve block (3) is less than the internal diameter of rear valve block hole (41).
4. the gas spray valve with damping mechanism according to claim 3, it is characterized in that: described front valve block hole (31) and rear valve block hole (41) are separately positioned on front valve seat (32) and rear valve base (42), described front valve seat (32) and rear valve base (42) be parallel to each other be arranged on valve body (1) inner chamber in, the external diameter of front valve seat (32) is less than the external diameter of rear valve base (42); The sidewall of described valve body (1) is provided with penetration hole (7) and air outlet hole (81), described penetration hole (7) is communicated with the forward and backward two ends of valve body (1), and described air outlet hole (81) is communicated to the inner chamber of the valve body (1) between front valve block (3) and rear valve block (4); The front end of described valve rod (2) is fixedly connected with spring seat (8), is provided with return spring (9) between described spring seat (8) and valve body (1).
CN201410825749.XA 2014-12-28 2014-12-28 Gas injection valve with buffer mechanism CN104482231B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201410825749.XA CN104482231B (en) 2014-12-28 2014-12-28 Gas injection valve with buffer mechanism

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CN104482231A true CN104482231A (en) 2015-04-01
CN104482231B CN104482231B (en) 2017-01-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042177A (en) * 2015-09-17 2015-11-11 潍坊力创电子科技有限公司 Gas injection valve with buffer mechanism

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028392A2 (en) * 1996-01-31 1997-08-07 Siemens Automotive Corporation Groove means in a fuel injector valve seat
US6386234B2 (en) * 2000-02-05 2002-05-14 Karl Dungs Gmbh & Co. Overtravel-double seat magnetic valve
CN103256393A (en) * 2013-04-28 2013-08-21 潍坊威度电子科技有限公司 Pressure-balanced type gas jet digital valve
CN104197027A (en) * 2014-09-23 2014-12-10 潍坊力创电子科技有限公司 Integral double-valve gas injection valve and assembly method thereof
CN204358131U (en) * 2014-12-28 2015-05-27 潍坊力创电子科技有限公司 With the gas spray valve of damping mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028392A2 (en) * 1996-01-31 1997-08-07 Siemens Automotive Corporation Groove means in a fuel injector valve seat
US6386234B2 (en) * 2000-02-05 2002-05-14 Karl Dungs Gmbh & Co. Overtravel-double seat magnetic valve
CN103256393A (en) * 2013-04-28 2013-08-21 潍坊威度电子科技有限公司 Pressure-balanced type gas jet digital valve
CN104197027A (en) * 2014-09-23 2014-12-10 潍坊力创电子科技有限公司 Integral double-valve gas injection valve and assembly method thereof
CN204358131U (en) * 2014-12-28 2015-05-27 潍坊力创电子科技有限公司 With the gas spray valve of damping mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042177A (en) * 2015-09-17 2015-11-11 潍坊力创电子科技有限公司 Gas injection valve with buffer mechanism

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Inventor after: Wang Lifeng

Inventor after: Wang Xiuqiang

Inventor after: Wu Pengchao

Inventor after: Wu Longlong

Inventor after: Cong Tianzeng

Inventor after: Su Mingtao

Inventor after: Yi Jinshui

Inventor before: Wu Longlong