CN102537428A - Four-way valve - Google Patents
Four-way valve Download PDFInfo
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- CN102537428A CN102537428A CN2011101664788A CN201110166478A CN102537428A CN 102537428 A CN102537428 A CN 102537428A CN 2011101664788 A CN2011101664788 A CN 2011101664788A CN 201110166478 A CN201110166478 A CN 201110166478A CN 102537428 A CN102537428 A CN 102537428A
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- housing
- way valve
- pressure reference
- shell
- diesel engine
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Abstract
A four-way valve is used for connecting a diesel engine with a diesel engine exhaust particle purifier and comprises a shell, a gas inlet tube and a pressure reference tube arranged on the shell. One end of the pressure reference tube extends into the shell, a cover plate is connected onto the shell, a sealing gasket is arranged between the shell and the cover plate, two branched gas inlet tubes are fixed onto the cover plate, one end of each branched gas inlet tube extends into the shell, three valve bonnets capable of respectively hermetically covering end surfaces of the pressure reference tube and the branched gas inlet tubes are arranged in the shell, and are independently driven by three pneumatic elements, and a mounting hole for mounting a pressure sensor is further disposed on the gas inlet tube. The four-way valve has the advantages that 1, the gas inlet tube, the branched gas inlet tubes, three valves and the three pneumatic elements are disposed on the shell, pipelines for being connected with the valves and fixing supports for the pneumatic elements are omitted, and the four-way valve is compact in structure and small in volume; and 2, the four-way valve is additionally provided with the pressure reference tube which can be used for accurately and conveniently judging regeneration points of the particle purifier.
Description
Technical field
The present invention relates to a kind of valve, this valve is used for connecting diesel engine of vehicle and diesel engine vent gas particulate burning purifying device.
Background technique
The diesel engine of vehicle tail gas particulate burning purifying device of existing technology; Generally comprising two porcelain filters hockets and filters and regeneration (promptly removing particle in the filter); When the particle in the porcelain filter runs up to when reaching regenerating point when a certain amount of; Just need regenerate, regenerating point is mainly judged through the temperature of measuring pressure that air-flow forms and air-flow on pottery and is drawn.This diesel engine vent gas particulate burning purifying device; Basic structure is: have a suction tude to be connected with diesel engine; The other end of suction tude is connected with two branch purifiers, divides in the purifier ceramic for filtration is housed, and the front end of two branch purifiers is respectively equipped with the dish valve; Divide purifier when work, filtration state and reproduced state to be arranged, the switching of this two states is accomplished through the open and close of dish valve.The deficiency that said structure exists is: the dish valve needs pipeline transition connection, dish valve to need driving element to drive, thereby makes the purifier volume bigger, and the repacking of automobile is made troubles.
Summary of the invention
The purpose of this invention is to provide a kind of four way valve to substitute the dish valve and the transition conduit of existing technology, reduce the purifier volume; Another purpose is to make valve have air communication to cross to produce a suitable pressure, as the benchmark of the regenerating point of particulate burning purifying device.Technological scheme of the present invention is: a kind of four way valve is used for connecting diesel engine and diesel engine vent gas particulate burning purifying device; It comprises housing, suction tude; Be arranged on the pressure reference pipe on the housing, be arranged on the pneumatic element on the housing, be connected the cover plate on the housing; Be provided with sealing gasket between housing and the cover plate, be fixed with two branched inlet pipes on the cover plate; Described suction tude is provided with the mounting hole of setting pressure sensor; One end of described branched inlet pipe stretches in the housing, and an end of described pressure reference pipe stretches in the housing, in housing, is provided with three valve gaps that can seal the end face that covers pressure reference pipe, branched inlet pipe respectively; Described valve gap is driven by the pneumatic element of correspondence.
Described pressure reference pipe has a fixing resistance coefficient to air-flow.
Resistance coefficient when the size of described pressure reference pipe resistance coefficient reaches regenerating point with described diesel engine particles purifier equates.
Described pneumatic element structure is identical, and described pneumatic element comprises cylinder, and an end of cylinder is screwed onto on the housing; Be provided with piston in the cylinder, piston is provided with seal gas ring, and an end of piston is fixed with tappet; Be with spring on the tappet; One end of tappet is provided with described valve gap, and the other end of cylinder seals with nut, and nut is provided with the pressurized air inlet hole.
The beneficial effect of a kind of four way valve of the present invention is: 1, have the function of three valves, its manufacture cost is lower than the manufacture cost sum of three valves; 2, because suction tude, branched inlet pipe, three valves and three pneumatic elements all are arranged on the housing, have saved and connect the pipeline of valve and the fixed support of pneumatic element, compact structure, volume are little; 3, set up pressure reference pipe, the pressure that air-flow forms on pressure reference pipe can be used as the regenerating point benchmark of judging porcelain filter.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is A-A sectional view of Fig. 1.
Embodiment
Contrast description of drawings preferred embodiment of the present invention at present.
A kind of four way valve of the present invention is used for connecting diesel engine and diesel engine vent gas particulate burning purifying device, and its structure comprises housing 2, suction tude 1; Be arranged on the pressure reference pipe 10 on the housing; One end of pressure reference pipe stretches in the housing, is connected with cover plate 3 through screw 6 on the described housing, is provided with sealing gasket 5 between housing and the cover plate; Be fixed with two branched inlet pipes 4,19 on the cover plate, an end of described branched inlet pipe stretches in the housing; In housing, be provided with three valve gaps that can seal the end face that covers pressure reference pipe, branched inlet pipe respectively; Described valve gap is by three pneumatic elements, 7,8,9 single driving; Described suction tude is provided with the mounting hole 20 of setting pressure sensor.
Branched inlet pipe and pressure reference pipe constitute three valves with corresponding valve gap, and valve gap can be controlled the switching of the air-flow of branched inlet pipe and pressure reference pipe respectively under the driving of pneumatic element.
Described pneumatic element 7,8,9 structures are identical, and pneumatic element 8 comprises cylinder 16, and an end of cylinder is screwed onto on the housing 2; Be provided with piston 13 in the cylinder, piston is provided with seal gas ring 14, and an end of piston is fixed with tappet 17; Be with spring 15 on the tappet; One end of tappet is provided with valve gap 18, and the other end of cylinder is with nut 12 sealings, and nut is provided with pressurized air inlet hole 11.When pressurized air is got into by inlet hole 11, piston advances forward set, when pressurized air broke off, moving backward at the effect lower piston of spring resetted, and valve gap is moved.
The suction tude 1 of four way valve connects the outlet pipe of diesel engine during installation, and branched inlet pipe 4 the other ends connect a tail gas particulate burning purifying device, and branched inlet pipe 19 the other ends connect another tail gas particulate burning purifying device, and pressure reference pipe 10 the other ends lead to atmosphere.
Described pressure reference pipe has a fixed resistance coefficient to air-flow, and the resistance coefficient of pressure reference pipe depends on the length and the internal diameter of pressure ginseng pipe, and when length one timing, its internal diameter increases resistance coefficient and reduces, and its internal diameter reduces resistance coefficient and increases; Change its internal diameter and can change its resistance coefficient.During air communication excess pressure reference pipe, can produce a pressure at pressure reference pipe and fall, resistance coefficient is big more, and the pressure of generation falls also big more, and vice versa;
The resistance coefficient of diesel engine particles purifier is then relevant with the particle accumulation; The accumulation that depends on particle when specification one its resistance coefficient of timing of diesel engine particles purifier; More its resistance coefficients of purifier endoparticle accumulation are big more; When particle accumulation reaches when a certain amount of, need regenerate to purifier when promptly reaching regenerating point.
Under same air-flow, alternately measure and flow through the pressure of pressure reference pipe and particulate burning purifying device, the pressure difference of comparison; Can offset the error that diesel engine brings because of the operating mode difference; Thereby judge the particulate burning purifying device exactly and whether reach regenerating point; When testing the resistance coefficient when the resistance coefficient of pressure reference pipe is adjusted near particulate burning purifying device regenerating point, the regenerating point error that draws is minimum.Resistance coefficient equated when the resistance coefficient size of the pressure reference pipe described in the present embodiment reached regenerating point with the diesel engine particles purifier.
Use seasonal pneumatic element 7 set suction tude 4 to close, pneumatic element 8 suction tude 19 conductings that reset, pneumatic element 9 set pressure reference pipes are closed, and only through suction tude 19, the purifier of suction tude 19 back is in the filtration state to tail gas; When needs are measured the regenerating point of purifier of suction tude 19; Under the filtration state, measure filter pressure earlier, make pneumatic element 9 reseat pressure reference pipe conductings then, pneumatic element 8 set suction tude 19 are closed; Pneumatic element 7 states are constant; Diesel engine vent gas is only discharged through pressure reference pipe, and the pressure of measurement is that pressure reference pipe pressure is a reference pressure, if filter pressure equates with reference pressure or approaching then show that the particle accumulation reaches regenerating point; Measurement finishes and recovers pneumatic element 9,8 to filtering the state position.The process that the filtration of the purifier of suction tude 4 back and regenerating point are measured is similar to the above process.
Claims (4)
1. four way valve that is used for connecting diesel engine and diesel engine vent gas particulate burning purifying device; It comprises housing, suction tude; Be arranged on the pressure reference pipe on the housing, be arranged on the pneumatic element on the housing, be connected the cover plate on the housing; Be provided with sealing gasket between housing and the cover plate, be fixed with two branched inlet pipes on the cover plate; Described suction tude is provided with the mounting hole of setting pressure sensor; One end of described branched inlet pipe stretches in the housing, and an end of described pressure reference pipe stretches in the housing, in housing, is provided with three valve gaps that can seal the end face that covers pressure reference pipe, branched inlet pipe respectively; Described valve gap is driven by the pneumatic element of correspondence.
2. four way valve as claimed in claim 1 is characterized in that: described pressure reference pipe has a fixing resistance coefficient to air-flow.
3. four way valve as claimed in claim 2 is characterized in that: the resistance coefficient the when size of described resistance coefficient reaches regenerating point with described diesel engine vent gas particulate burning purifying device equates.
4. four way valve as claimed in claim 1 is characterized in that: described pneumatic element structure is identical, and described pneumatic element comprises cylinder; One end of cylinder is screwed onto on the housing, is provided with piston in the cylinder, and piston is provided with seal gas ring; One end of piston is fixed with tappet, is with spring on the tappet, and an end of tappet is provided with described valve gap; The other end of cylinder seals with nut, and nut is provided with the pressurized air inlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101664788A CN102537428A (en) | 2011-06-21 | 2011-06-21 | Four-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101664788A CN102537428A (en) | 2011-06-21 | 2011-06-21 | Four-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102537428A true CN102537428A (en) | 2012-07-04 |
Family
ID=46345056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101664788A Pending CN102537428A (en) | 2011-06-21 | 2011-06-21 | Four-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102537428A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033223A (en) * | 2014-06-30 | 2014-09-10 | 高玉琴 | Internal combustion engine exhaust filter regeneration point measuring device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4373330A (en) * | 1981-06-29 | 1983-02-15 | General Motors Corporation | Diesel engine dual path exhaust cleaner and burner system |
| CN2175704Y (en) * | 1993-08-17 | 1994-08-31 | 卢金雁 | Automatic trailer backing device |
| CN1877093A (en) * | 2005-06-06 | 2006-12-13 | 平原滤清器有限公司 | Particle catcher for diesel engine |
| CN202140623U (en) * | 2011-06-21 | 2012-02-08 | 高玉琴 | Four-way valve |
-
2011
- 2011-06-21 CN CN2011101664788A patent/CN102537428A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4373330A (en) * | 1981-06-29 | 1983-02-15 | General Motors Corporation | Diesel engine dual path exhaust cleaner and burner system |
| CN2175704Y (en) * | 1993-08-17 | 1994-08-31 | 卢金雁 | Automatic trailer backing device |
| CN1877093A (en) * | 2005-06-06 | 2006-12-13 | 平原滤清器有限公司 | Particle catcher for diesel engine |
| CN202140623U (en) * | 2011-06-21 | 2012-02-08 | 高玉琴 | Four-way valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033223A (en) * | 2014-06-30 | 2014-09-10 | 高玉琴 | Internal combustion engine exhaust filter regeneration point measuring device |
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Application publication date: 20120704 |