CN104280195A - Pump body airtightness detection device of urine metering pump - Google Patents

Pump body airtightness detection device of urine metering pump Download PDF

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Publication number
CN104280195A
CN104280195A CN201410458265.6A CN201410458265A CN104280195A CN 104280195 A CN104280195 A CN 104280195A CN 201410458265 A CN201410458265 A CN 201410458265A CN 104280195 A CN104280195 A CN 104280195A
Authority
CN
China
Prior art keywords
cylinder
pump housing
plate
pump
air
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.)
Pending
Application number
CN201410458265.6A
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Chinese (zh)
Inventor
翟鸿飞
丰彪
唐军峰
张戚萌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XI'AN QINTAI AUTOMOBILE FITTINGS CO Ltd
Original Assignee
XI'AN QINTAI AUTOMOBILE FITTINGS CO Ltd
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
Priority to CN201420334313.6 priority Critical
Priority to CN201420334313 priority
Application filed by XI'AN QINTAI AUTOMOBILE FITTINGS CO Ltd filed Critical XI'AN QINTAI AUTOMOBILE FITTINGS CO Ltd
Priority to CN201410458265.6A priority patent/CN104280195A/en
Publication of CN104280195A publication Critical patent/CN104280195A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a pump body airtightness detection device of a urine metering pump. The pump body airtightness detection device comprises a bottom plate, a pump body positioning plate, a pump body positioning plate fixing base, a cylinder fixing plate, a cylinder, a water tank, a sealing movable plate, a pressing block cylinder fixing base, a pressing block cylinder, an electrical control box and a water tank fixing block. A tested pump body is positioned through the pressing block cylinder, and air is introduced into the cylinder so that a leaking position of the pump body can be detected. The pump body airtightness detection device is simple in structure, low in cost, visual and accurate in detection result and high in operation efficiency.

Description

The pump housing air-tightness detection device of urea volume pump
Technical field
The present invention relates to vehicle exhaust aftertreatment field, particularly relate to a kind of pump housing air-tightness detection device of the urea volume pump for diesel engine vent gas aftertreatment.
Background technology
The urea volume pump pump housing, as urea volume pump important composition component, is mainly used in diesel engine vent gas after-treatment system, reduces the discharge of harmful gas, sprays accurate urea amount to control primarily of urea volume pump.Therefore, pump housing sealing directly affects the injection degree of accuracy of urea volume pump, and the pump housing seals bad leakage, can damage other accessories.
Current, the common method of air-leakage test often adopts bubble method, semar technique, chemical gas spike leak detecting and pressure differential method etc., and not only labour intensity is large, and testing efficiency is low.
The pump housing air-tightness detection device of existing urea volume pump, require high to frock clamp Seal Design, accurately can not measure the leak position of detected member, test job efficiency is low.Complex structure, working strength is large, and efficiency is not high.Such as Chinese patent application (publication number: CN103471785A) discloses a kind of air-tightness detection device of product, comprises base, support, the transparent vessel filling liquid, clip, draft tube, escape pipe and tensimeter; Described support is fixed on base, the two ends of clip are connected with support, the opening sealing of transparent vessel, transparent vessel is clamped on clip, one end of draft tube is provided with valve, and the other end immerses in the liquid in transparent vessel, and one end of escape pipe connects unit under test, the other end is positioned on the liquid levels of transparent vessel, and tensimeter is arranged in draft tube.This apparatus structure is simple, and cost is low; Testing process is simple, and whether gas leak phenomenon is obvious; Any negative effect can not be produced to detected parts.But this device requires high to frock clamp Seal Design, and accurately can not measure the leak position of detected member, during test, be blocked by unnecessary mouth, only retain an air intake opening of unit under test, test job efficiency is low.
Along with China strengthens environmental pollution regulation, purify air environment, reduce haze, therefore vehicle exhaust after-treatment system is had higher requirement, in diesel engine vent gas after-treatment system, urea volume pump is core component in after-treatment system, to reliability and stability and the measuring accuracy of urea volume pump, the pump housing air-leakage test of urea volume pump is most important.
Summary of the invention
In order to ensure accurate emitted dose and the job stability of urea volume pump, the object of the invention is to, providing a kind of pump housing air-tightness detection device of the urea volume pump for diesel engine vent gas aftertreatment, its structure is simple, and testing result is accurate, and operating efficiency is high.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of pump housing air-tightness detection device of urea volume pump, it is characterized in that, comprise base plate, pump housing location-plate, pump housing location-plate holder, air cylinder fixed plate, cylinder, tank, sealing movable plate, briquetting cylinder holder, briquetting cylinder, electric control box, tank fixed block; Wherein:
Tank is fixed on base plate by tank fixed block, pump housing location-plate is connected with pump housing location-plate holder, air cylinder fixed plate is connected with pump housing location-plate and pump housing location-plate holder, cylinder is fixed in air cylinder fixed plate, sealing movable plate is connected with by a header board in the piston rod end of cylinder, sealing movable plate under the driving of cylinder, for sealing the liquid in-out mouth of the tested pump housing; Sealing movable plate is fixed with briquetting cylinder holder, briquetting cylinder holder is connected with briquetting cylinder, the piston rod of briquetting cylinder moves up and down, and for compressing the retaining valve in the air valve on the tested pump housing, electric control box is fixed on pump housing location-plate holder.
Other feature of the present invention is:
Tensimeter and Programmable Logic Controller is had at least in described electric control box.
Described cylinder and briquetting cylinder are all provided with sensor.
The pump housing air-tightness detection device of urea volume pump of the present invention, adopts briquetting cylinder to locate the tested pump housing, and cylinder passes into source of the gas accurately testing pump body drain point position, and its structure is simple, and cost is low, and testing result is intuitively accurate, and operating efficiency is high.
Accompanying drawing explanation
Fig. 1 is the pump housing air-tightness detection device schematic diagram of urea volume pump of the present invention;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the operational flow diagram of gas;
Mark in figure represents respectively: 200, base plate, 201, pump housing location-plate, 202, pump housing location-plate holder, 203, air cylinder fixed plate, 204, cylinder, 205, tank, 206, movable plate is sealed, 207, briquetting cylinder holder, 208, briquetting cylinder, 209, the tested pump housing, 210, electric control box, 211, pump housing feed tube, 212, pump housing drain pipe, 213, tank fixed block.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1 to Figure 2, the present embodiment provides a kind of pump housing air-tightness detection device of urea volume pump, comprise base plate 200, pump housing location-plate 201, pump housing location-plate holder 202, air cylinder fixed plate 203, cylinder 204, tank 205, briquetting cylinder 208, sealing movable plate 206, briquetting cylinder holder 207, the tested pump housing 209, electric control box 210, pump housing feed tube 211, pump housing drain pipe 212, tank fixed block 213, tank 205 is put on base plate 200, tank fixed block 213 is fixed on tank 205 on base plate 200, pump housing location-plate 201 is connected with pump housing location-plate holder 202, air cylinder fixed plate 203 is connected with pump housing location-plate 201 and pump housing location-plate holder 202, cylinder 204 is fixed in air cylinder fixed plate 203, sealing movable plate 206 is fixed on the header board of the piston rod end of cylinder 204, cylinder 204 can drive sealing movable plate 206 to seal the liquid in-out mouth of the tested pump housing 209, briquetting cylinder holder 207 is fixed on sealing movable plate 206, briquetting cylinder 208 connects briquetting cylinder holder 207, the piston rod of briquetting cylinder 208 moves up and down, retaining valve in air valve on the tested pump housing 209 is compressed, make it can not eject in airtight test, electric control box 210 is fixed on pump housing location-plate holder 202.
In the present embodiment, in electric control box 210, have tensimeter and Programmable Logic Controller (PLC) at least.Cylinder 204 and briquetting cylinder 208 are all provided with sensor; Wherein, the control program of electric control box 210 and Programmable Logic Controller wherein (PLC) is provided according to the technical requirement of applicant by the manufacturer of specialty, through field adjustable, meets technical requirement, and provides after sale service.
In concrete test, the air supply system be connected with cylinder 204 is the air supply system (see Fig. 3) that this area is commonly used, this air supply system comprises gas source purification device, gas source purification device is connecting band table pressure regulator valve 1 and band table pressure regulator valve 2 respectively, wherein, band table pressure regulator valve 1 is respectively by solenoid valve 1 and solenoid valve 2 control cylinder 204 and briquetting cylinder 208; Band table pressure regulator valve 2 is by pipeline electromagnetic valve 1 connecting line solenoid valve 2 and the tested pump housing 209 respectively.
The pump housing air-tightness detection device of the urea volume pump adopting above-described embodiment to prepare, before testing, before cylinder 204 compresses the tested pump housing 209, the pump housing feed tube 211 of the tested pump housing 209 and pump housing drain pipe 212 are passed from the preformed hole of cylinder holder 207, pump housing feed tube 211 and pump housing drain pipe 212 just in time inject on sealing movable plate 206 and are equipped with in the seal bore of O-ring seal.
Concrete test process is:
The tested pump housing 209 is put into tank 205, allows tank 205 li of water loggings not have the tested pump housing 209, connect source of the gas, mix up the manometric pressure of electric control box 210, connect the primary power of electric control box 210, power light is bright, by start button, cylinder 204 action, the piston rod side of cylinder 204 is fixed with header board, should move together with hydrodynamic reciprocating sealing plate 206, compress the tested pump housing, the feed liquor of the tested pump housing and drain pipe just in time inject on sealing movable plate 206 and are equipped with in the seal bore of O-ring seal and seal, cylinder 204 compresses the rear stop motion of the tested pump housing 209, by the sensor on cylinder 204, signal is passed to Programmable Logic Controller (PLC), Programmable Logic Controller (PLC) Controlling solenoid valve 1 carrys out control cylinder 204 stop motion, after cylinder 204 stop motion, briquetting cylinder 208 action, the piston rod of briquetting cylinder 208 moves downward, retaining valve in air valve on the tested pump housing 209 is compressed, make it can not eject in airtight test, stop motion when briquetting cylinder 208 compresses retaining valve in the air valve on the tested pump housing 209, by the sensor on briquetting cylinder 208, signal is also passed to Programmable Logic Controller (PLC), Programmable Logic Controller (PLC) Controlling solenoid valve 2 controls briquetting cylinder 208 stop motion, after cylinder 204 stop motion, Programmable Logic Controller (PLC) pilot piping solenoid valve 1 is opened, pressurized air enters the tested pump housing 209, ventilate 20 seconds, bubble whether is had to produce observing during this period of time in tank 205, if there is bubble to produce, illustrate that the tested pump housing 209 has leakage, poor sealing, defective, and find bubble to produce position.
If the tested pump housing 209 does not have bubble to produce, illustrate that the tested pump housing 209 is qualified, good seal, after 20 second time arrived, Programmable Logic Controller (PLC) pilot piping solenoid valve 1 cuts out, stop ventilation, pipeline electromagnetic valve 2 is opened, release the gas of the tested pump housing 209, briquetting cylinder 208 action, the piston rod of briquetting cylinder 208 is upwards retracted, the sensor that briquetting cylinder 208 piston rod gets back to up stroke passes to Programmable Logic Controller (PLC) signal, the action of Programmable Logic Controller (PLC) control cylinder 204, header board on the tailpiece of the piston rod of cylinder 204 is retracted together with hydrodynamic reciprocating sealing plate 206, then the tested pump housing 209 is taken out, if there is the substandard product of leakage, mark at the leak position marking pen of the tested pump housing, to keep in repair, this completes the airtight test of the pump housing.

Claims (3)

1. the pump housing air-tightness detection device of a urea volume pump, it is characterized in that, comprise base plate (200), pump housing location-plate (201), pump housing location-plate holder (202), air cylinder fixed plate (203), cylinder (204), tank (205), sealing movable plate (206), briquetting cylinder holder (207), briquetting cylinder (208), electric control box (210), tank fixed block (213); Wherein:
Tank (205) is fixed on base plate (200) by tank fixed block (213), pump housing location-plate (201) is connected with pump housing location-plate holder (202), air cylinder fixed plate (203) is connected with pump housing location-plate (201) and pump housing location-plate holder (202), cylinder (204) is fixed in air cylinder fixed plate (203), sealing movable plate (206) is connected with by a header board in the piston rod end of cylinder (204), sealing movable plate (206) is under the driving of cylinder (204), for sealing the liquid in-out mouth of the tested pump housing (209), sealing movable plate (206) is fixed with briquetting cylinder holder (207), briquetting cylinder holder (207) is connected with briquetting cylinder (208), the piston rod of briquetting cylinder (208) moves up and down, for compressing the retaining valve in the air valve on the tested pump housing (209), electric control box (210) is fixed on pump housing location-plate holder (202).
2. the pump housing air-tightness detection device of urea volume pump as claimed in claim 1, is characterized in that having tensimeter and Programmable Logic Controller at least in described electric control box (210).
3. the pump housing air-tightness detection device of urea volume pump as claimed in claim 1, is characterized in that, described cylinder (204) and briquetting cylinder (208) are all provided with sensor.
CN201410458265.6A 2014-06-20 2014-09-10 Pump body airtightness detection device of urine metering pump Pending CN104280195A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201420334313.6 2014-06-20
CN201420334313 2014-06-20
CN201410458265.6A CN104280195A (en) 2014-06-20 2014-09-10 Pump body airtightness detection device of urine metering pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410458265.6A CN104280195A (en) 2014-06-20 2014-09-10 Pump body airtightness detection device of urine metering pump

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CN201410458265.6A Pending CN104280195A (en) 2014-06-20 2014-09-10 Pump body airtightness detection device of urine metering pump

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108918041A (en) * 2018-08-01 2018-11-30 湖北赛恩斯科技股份有限公司 A kind of airtight water detecting tool of fuel pump and application method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204115978U (en) * 2014-06-20 2015-01-21 西安秦泰汽车配件有限公司 The pump housing air-tightness detection device of urea volume pump

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005214859A (en) * 2004-01-30 2005-08-11 Jfe Steel Kk Airtight testing apparatus for pump for liquefied gas
US20070113621A1 (en) * 2005-11-24 2007-05-24 Denso Corporation Leak inspection device
CN201635986U (en) * 2010-02-02 2010-11-17 杭州迪科机械有限公司 Seal performance test bench for water pump
CN202101815U (en) * 2011-05-16 2012-01-04 天津骏腾汽车部件有限公司 Air tightness test table for pump rack assembly of automobile fuel pump
CN203441723U (en) * 2013-08-19 2014-02-19 米顿罗工业设备(上海)有限公司 Metering pump test equipment
CN103808472A (en) * 2014-01-27 2014-05-21 玉林市中创机械有限公司 Automatic diving leakage testing machine for water pump semi-finished product
CN204115978U (en) * 2014-06-20 2015-01-21 西安秦泰汽车配件有限公司 The pump housing air-tightness detection device of urea volume pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005214859A (en) * 2004-01-30 2005-08-11 Jfe Steel Kk Airtight testing apparatus for pump for liquefied gas
US20070113621A1 (en) * 2005-11-24 2007-05-24 Denso Corporation Leak inspection device
CN201635986U (en) * 2010-02-02 2010-11-17 杭州迪科机械有限公司 Seal performance test bench for water pump
CN202101815U (en) * 2011-05-16 2012-01-04 天津骏腾汽车部件有限公司 Air tightness test table for pump rack assembly of automobile fuel pump
CN203441723U (en) * 2013-08-19 2014-02-19 米顿罗工业设备(上海)有限公司 Metering pump test equipment
CN103808472A (en) * 2014-01-27 2014-05-21 玉林市中创机械有限公司 Automatic diving leakage testing machine for water pump semi-finished product
CN204115978U (en) * 2014-06-20 2015-01-21 西安秦泰汽车配件有限公司 The pump housing air-tightness detection device of urea volume pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108918041A (en) * 2018-08-01 2018-11-30 湖北赛恩斯科技股份有限公司 A kind of airtight water detecting tool of fuel pump and application method

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