CN101788369B - Machine for checking tightness of pressure retaining valve of air conditioning indoor unit - Google Patents
Machine for checking tightness of pressure retaining valve of air conditioning indoor unit Download PDFInfo
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- CN101788369B CN101788369B CN2010101218053A CN201010121805A CN101788369B CN 101788369 B CN101788369 B CN 101788369B CN 2010101218053 A CN2010101218053 A CN 2010101218053A CN 201010121805 A CN201010121805 A CN 201010121805A CN 101788369 B CN101788369 B CN 101788369B
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- retaining valve
- pressure retaining
- machine
- indoor unit
- air conditioning
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Abstract
The invention relates to a machine for checking the tightness of a pressure retaining valve of an air conditioning indoor unit, and aims to endow the provided machine with the characteristics of high detection quality, high working efficiency and labor-saving and convenient test. The invention adopts the technical scheme that: the machine for checking the tightness of the pressure retaining valve of the air conditioning indoor unit comprises a stander; a plurality of guide poles in parallel with one another are vertically fixed on the stander; a sealing cavity is fixed on a central part above the guide poles in a suspension way; transparent baffles are arranged around the sealing cavity; a bottom plate of the sealing cavity is provided with a group of through holes matched with the outline of the pressure retaining valve, while a top plate is provided with a windpipe joint and a water pipe joint respectively; a positioning plate capable of vertically moving is arranged below the bottom plate; a plurality of guide sleeves correspondingly embedded with the guide poles are arranged around a bedplate of the positioning plate; the positioning plate is provided with a group of positioning points which are correspondingly and vertically aligned with the through holes on the bottom plate respectively; a ventilation hole communicated with a high-pressure air source is formed in the centre of each positioning point; and thrust is applied to the bottom end of the positioning plate by a power mechanism.
Description
Technical field
The present invention relates to a kind of checkout equipment, particularly the sealing property machines of air-conditioning internal machine pressure retaining valve.
Background technology
Pressure retaining valve is the vitals of air-conditioning internal machine, and an end of these parts is tightened on the joint of air-conditioning internal machine refrigeration piping; The adapter sleeve that uses inflator just can directly be inflated air-conditioning internal machine at the rubber plug that the other end backs down pressure retaining valve, wait to be inflated to authorised pressure and just can extract adapter sleeve, rely on the spring pressure of pressure retaining valve and the pressure of gas, rubber plug is pressed on down produces sealing effectiveness on the internal conical surface.The sealing property of pressure retaining valve is directly connected to the sealing property of air-conditioning internal machine, and then influences the quality index of air conditioner.
Yet there are many factors that the sealing property of pressure retaining valve is exerted an influence in process of production; For example frock clamp, process equipment even air dust etc.Therefore, in manufacture process, guarantee to accomplish that absolutely sealing is obviously unrealistic, need detect substandard product by detecting operation.Do not have special-purpose checkout equipment for pressure retaining valve at present, can only rely on the manual aerostatic press that is communicated with to detect; Not only efficient is low, and examination criteria is difficult to grasp.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the above-mentioned background technology, a kind of sealing property inspection machine of pressure retaining valve be provided, this equipment should have detect that quality is good, high efficiency, the laborsaving characteristics easily of test, to improve the product percent of pass of pressure retaining valve.
The technical scheme that the present invention proposes is: machine for checking tightness of pressure retaining valve of air conditioning indoor unit comprises frame; It is characterized in that vertically fixing on the described frame guide pillar that several are parallel to each other, the unsettled annular seal space that is isolated from the outside of fixing in the middle part on these guide pillar tops, be provided with the transparent baffle that is beneficial to perspective around the side of annular seal space, be shaped on one group on the base plate of annular seal space and be furnished with the through hole of O-ring seal with pressure retaining valve first half outline fit and inwall, be shaped on respectively on the top board of annular seal space by pipeline and connect the gas-tpe fitting of source of the gas and the water pipe head of connecting external water source, be connected the backplate surface that water pipe in the water pipe head down extends to annular seal space; But the bottom of described base plate is provided with the horizontally disposed location-plate of a vertical motion, fix being shaped on that several are chimeric one by one in order to the guide pin bushing that slides with described guide pillar around the platen of this location-plate, be shaped on one group of suitable with pressure retaining valve bottom profile phase and quantity equates with through hole anchor point on the location-plate; These anchor points dispose O-ring seal respectively and aim at up and down one by one with the through hole on the base plate, and anchor point central authorities are shaped on the air hole that is communicated with high-pressure air source by external catheter; The bottom of location-plate also is subjected to the thrust that an actuating unit applies.
Described base plate is formed by stacking up and down by division board and push pedal, and described O-ring seal is arranged in the through hole of division board; Aforesaid push pedal also is connected with a vertical motion mechanism, and the shoulder contour of via profiles in this push pedal and pressure retaining valve adapts, and makes it break away from base plate with downward promotion pressure retaining valve.
Described vertical motion mechanism comprises behind the some division boards that are parallel to each other and pass through and the fixing push rod of push pedal fixedlying connected with the piston rod of a upper cylinder in the top of push rod downwards; Upper cylinder is fixed on the frame of annular seal space top.
Described actuating unit is a lower cylinder.
Described source of the gas is a vacuum pump.
Described water source is a tap water.
Principle of work of the present invention is: after the checking machine energising started, lower cylinder was driving location-plate and is being displaced downwardly to product loading and unloading position, and the manual pressure retaining valve one by one of operating personnel vertically inserts each anchor point (as shown in Figure 3); Operating personnel press the matched moulds switch afterwards, lower cylinder is promoting location-plate and is rising, (this moment, the O-ring seal of through hole and anchor point was pressed together on respectively on the top outline and lower end profile of pressure retaining valve, realized seal isolation until the through hole of the first half of all pressure retaining valves all being compressed into the annular seal space base plate; As shown in Figure 4), the location-plate motion stops; Then, water supply electromagnetic valve 26 is opened, and tap water enters in the annular seal space; When treating water surface rising 3-5cm, water supply electromagnetic valve is closed (by time relay control), stops into water, and vacuum solenoid 29 switchings are simultaneously bled to annular seal space and made it be negative pressure; On the other hand, gases at high pressure solenoid valve 22 switches, and gases at high pressure enter in the pressure retaining valve from the bottom of each pressure retaining valve; Like this, the pressure retaining valve two ends are in negative pressure and positive high voltage environment respectively; If occur continual bubble in the annular seal space, promptly show a certain pressure retaining valve sealing property defectiveness that emits the bubble place, produced micro-leakage, operating personnel promptly perform mark (detecting preparation).
Through the 30-50s testing process, operating personnel start drainage switch, go out water solenoid valve 27 and open the detection water of discharging in the annular seal space; Boost electromagnetic valve 23 is opened simultaneously, to the air of exerting pressure in the annular seal space, to quicken the efflux velocity of ponding; And the gases at high pressure solenoid valve switches the bottom air feed that stops each pressure retaining valve.
Ponding all drains in the chamber to be sealed, and operating personnel start the die sinking switch, and following reversing solenoid valve 21 switches (boost electromagnetic valve is closed simultaneously), and the piston rod of lower cylinder descends simultaneously slowly together with platen and location-plate, reduces to product loading and unloading position always; Pressure retaining valve then all is trapped in the annular seal space base plate because of the O-ring seal that the first half inserts in the through hole.At this moment, operating personnel take off defective pressure retaining valve according to the mark of reserving earlier, and a pallet is put in location-plate bottom (do to receive and prepare); Then start the product switch of being temporarily released from one's regular work, last reversing solenoid valve 30 switches, the piston rod of upper cylinder is down motion just, push rod in the vertical motion mechanism is promptly promoting push pedal and is down moving (as shown in Figure 5), and pressure retaining valve is just left division board by push pedal pushing and all drops and stored classifiedly in addition by operating personnel in pallet; Switch (by time relay control) once more and go up reversing solenoid valve, the piston rod of upper cylinder up moves, and the push rod in the vertical motion mechanism moves upward together with push pedal, and is superimposed again until push pedal and division board, and one is detected loop ends.
After this, operating personnel vertically insert pressure retaining valve one by one at each pilot hole of location-plate once more, detect circulation and begin once more.
The invention has the beneficial effects as follows: owing to adopted the specialized equipment detection, not only the detected air pressure standard can access unification, make product percent of pass be significantly improved (substandard product less than ten thousand/), and detection speed obviously accelerates (about 80 seconds cycle detection time spent), and detection efficiency significantly improves (a cycle detection 20-30 pressure retaining valve); In addition, because the mechanization degree height, operating personnel's working strength is significantly reduced, and working environment also improves.
Description of drawings
Fig. 1 is a main TV structure synoptic diagram of the present invention.
Fig. 2 is the A portion structure for amplifying synoptic diagram among Fig. 1.
Fig. 3 is one of the A portion user mode among a Fig. 1 structure for amplifying synoptic diagram.
Fig. 4 is two structure for amplifying synoptic diagram of the A portion user mode among Fig. 1.
Fig. 5 is three structure for amplifying synoptic diagram of the A portion user mode among Fig. 1.
Fig. 6 is the D portion structure for amplifying synoptic diagram among Fig. 4.
Fig. 7 is the E portion structure for amplifying synoptic diagram among Fig. 6.
Fig. 8 is that B-B among Fig. 2 is to the structure for amplifying synoptic diagram.
Fig. 9 is the structure for amplifying synoptic diagram of examined product-pressure retaining valve.
Embodiment
Below be described further.
That shown in Figure 9 is testing product of the present invention-pressure retaining valve F.Spool in this valve insertion relies on the spring applied pressure to realize the opening and closing of valve port; Therefore, the sealing property of valve port has determined the sealing property of pressure retaining valve; Need be after manufacturing be finished, by detecting the quality that operation guarantees product.
Machine for checking tightness of pressure retaining valve of air conditioning indoor unit shown in the figure comprises frame 1; Vertically fixing several guide pillars that are parallel to each other 3 on the described frame, the unsettled annular seal space that is isolated from the outside 10 of fixing in the middle part on these guide pillar tops, surround with transparent baffle 10-1 around the side of annular seal space, so that operating personnel are by observing the situation that whether has pressure retaining valve to leak in the annular seal space of checking.Being shaped on an assembly on the base plate of annular seal space has the through hole 9-21 of O-ring seal 9-22, and the inwall of these through holes and pressure retaining valve first half outline fit are beneficial to pressure retaining valve and upwards are inserted and positioned in the through hole from the bottom.Be shaped on respectively on the top board 10-2 of annular seal space (top board 10-2 is fixed on the upper mounted plate 11) by vacuum tube 16 connect vacuum pumps gas-tpe fitting, by ascending pipe 13 connect the gas-tpe fitting of boost electromagnetic valve 22 and supercharge pump 31 successively, by the water pipe head that feed pipe 15 is connected external water sources, be connected the backplate surface (backplate surface that extends to annular seal space is the ponding that extracts as much as possible when being convenient to draw water in the clean chamber) that water pipe 10-3 in the water pipe head down extends to annular seal space.The boundary of transparent baffle 10-1 and top board 10-2 and base plate also disposes packing washer respectively, to guarantee sealing effectiveness.
But the bottom of described base plate is provided with the horizontally disposed location-plate 7 of a vertical motion, and the platen 6 of fixing this location-plate is shaped on several guide pin bushings 5 respectively all around, and chimeric one by one being beneficial to of these guide pin bushings and described guide pillar slides up and down along these guide pillars; Be shaped on one group of anchor point that is used for pressure retaining valve location and communication with detection gases at high pressure on the location-plate 7, this anchor point can be positioning boss 7-1 (as shown in Figure 8) or pilot hole; The outline of these positioning boss 7-1 equates with through hole with internal bore profile fit of the bottom face of pressure retaining valve (or internal diameter of pilot hole and pressure retaining valve Lower Half outline fit) and quantity; All positioning boss 7-1 (or pilot hole) respectively with base plate on through hole aim at up and down one by one and positioning boss 7-1 around (or pilot hole inwall) dispose O-ring seal 7-6; The central authorities of all positioning boss 7-1 all are shaped on the air hole 7-2 of vertical layout, all air holes by the bottom air cavity 7-3 and the pore 7-5 of air cavity wall portion after be communicated with gases at high pressure solenoid valve and (or pilot hole directly is communicated with air cavity 7-3, pore 7-5, conduit 7-4 and gases at high pressure solenoid valve and high-pressure air source successively) by external catheter 7-4; High-pressure air source is a supercharge pump 31.
The bottom of location-plate 7 also is subjected to the upwards thrust that an actuating unit applies, and this actuating unit is the lower cylinder of vertically arranging 4; The piston rod of lower cylinder is fixed with the bottom of platen 6 straight up.The lower cylinder startup can drive location-plate and vertically move up and down.
Described base plate is formed by stacking up and down by division board 9 and push pedal 8, and described O-ring seal 9-22 is arranged in the through hole 9-21 of division board; Aforesaid push pedal 8 also is connected with a vertical motion mechanism, and the through hole 8-1 in this push pedal (through hole on the base plate is formed by through hole 9-21 on the division board and the serial connection of the through hole 8-1 in the push pedal 8) adapts to (clear for drawing, the whole omissions of pressure retaining valve F among Fig. 6 are not drawn) with the shoulder F1 profile phase of pressure retaining valve; Just can be when push pedal is pushed down like this to the shoulder F1 application of force of pressure retaining valve, promote pressure retaining valve and make its inlay resultant force that overcomes division board O-ring seal 9-22 and friction force and break away from base plate (as shown in Figure 5).
Described vertical motion mechanism comprises the some push rods that are parallel to each other 12; These push rods 12 passed through behind the guide hole on the division board fixing with push pedal 8 downwards, fixedlyed connected with the piston rod 19 of upper cylinder 20 in the top of push rod; Upper cylinder 20 is fixed on the bracing frame 18 of annular seal space top.
Described source of the gas is a vacuum pump 25; Described water source is a running water pipe.
Nature, the present invention's controlling parts such as being equipped with all kinds of rain glasss, electric switch, relay of still needing, these are conventional components and parts, and all buyable is no longer carefully stated one by one.
Also have among the figure: water inlet 241, water delivering orifice 231, air intake opening 221, control box 28.
Claims (6)
1. machine for checking tightness of pressure retaining valve of air conditioning indoor unit comprises frame (1); It is characterized in that vertically fixing on the described frame several guide pillars that are parallel to each other (3), the unsettled annular seal space that is isolated from the outside (10) of fixing in the middle part on these guide pillar tops, be provided with the transparent baffle (10-1) that is beneficial to perspective around the side of annular seal space, be shaped on one group on the base plate of annular seal space and be furnished with the through hole of O-ring seal with pressure retaining valve first half outline fit and inwall, be shaped on respectively on the top board of annular seal space (10-2) by pipeline and connect the gas-tpe fitting of source of the gas and the water pipe head of connecting external water source, be connected the backplate surface that water pipe (10-3) in the water pipe head down extends to annular seal space; But the bottom of described base plate is provided with the horizontally disposed location-plate (7) of a vertical motion, the platen (6) of fixing this location-plate is shaped on several all around and described guide pillar is chimeric one by one in order to the guide pin bushing (5) that slides, and is shaped on one group of suitable with pressure retaining valve bottom profile phase and quantity equates with through hole anchor point on the location-plate; These anchor points dispose O-ring seal respectively and aim at up and down one by one with the through hole on the base plate, and anchor point central authorities are shaped on the air hole (7-2) that is communicated with high-pressure air source by external catheter; The bottom of location-plate also is subjected to the thrust that an actuating unit applies.
2. machine for checking tightness of pressure retaining valve of air conditioning indoor unit according to claim 1 is characterized in that: described base plate is formed by stacking up and down by division board (9) and push pedal (8), and described O-ring seal (9-22) is arranged in the through hole (9-21) of division board; Aforesaid push pedal (8) also is connected with a vertical motion mechanism, and the shoulder contour of via profiles in this push pedal and pressure retaining valve (F1) adapts.
3. machine for checking tightness of pressure retaining valve of air conditioning indoor unit according to claim 2, it is characterized in that: described vertical motion mechanism comprises behind the some division boards that are parallel to each other and pass through and the fixing push rod (12) of push pedal fixedlying connected with the piston rod (19) of a upper cylinder (20) in the top of push rod downwards; Upper cylinder is fixed on the frame of annular seal space top.
4. according to claim 1 or 2 or 3 described machine for checking tightness of pressure retaining valve of air conditioning indoor unit, it is characterized in that: described actuating unit is lower cylinder (4).
5. machine for checking tightness of pressure retaining valve of air conditioning indoor unit according to claim 4 is characterized in that: described source of the gas is vacuum pump (25).
6. machine for checking tightness of pressure retaining valve of air conditioning indoor unit according to claim 5 is characterized in that: described water source is a tap water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101218053A CN101788369B (en) | 2010-02-12 | 2010-02-12 | Machine for checking tightness of pressure retaining valve of air conditioning indoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101218053A CN101788369B (en) | 2010-02-12 | 2010-02-12 | Machine for checking tightness of pressure retaining valve of air conditioning indoor unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101788369A CN101788369A (en) | 2010-07-28 |
| CN101788369B true CN101788369B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101218053A Expired - Fee Related CN101788369B (en) | 2010-02-12 | 2010-02-12 | Machine for checking tightness of pressure retaining valve of air conditioning indoor unit |
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| Country | Link |
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| CN (1) | CN101788369B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323011B (en) * | 2011-05-31 | 2013-03-27 | 江阴市创新气门嘴有限公司 | Batch valve core air-tightness test device |
| CN106153268B (en) * | 2016-08-24 | 2018-06-15 | 江苏杰士德精密工业有限公司 | Wrist-watch air tightness detection equipment |
| CN109974942A (en) * | 2019-01-29 | 2019-07-05 | 惠州科达利精密工业有限公司 | A kind of cover plate of power battery air-tightness detection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202858Y (en) * | 2008-04-19 | 2009-03-04 | 潘炎忠 | Gas charging and pressure retaining valve of air conditioner inner machine |
| CN201364226Y (en) * | 2009-03-18 | 2009-12-16 | 济南玫德铸造有限公司 | Hydraulic tester for testing air tightness of pipeline connecting pieces |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08297067A (en) * | 1995-04-26 | 1996-11-12 | Sanyo Electric Co Ltd | Three-way valve of air conditioner |
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2010
- 2010-02-12 CN CN2010101218053A patent/CN101788369B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202858Y (en) * | 2008-04-19 | 2009-03-04 | 潘炎忠 | Gas charging and pressure retaining valve of air conditioner inner machine |
| CN201364226Y (en) * | 2009-03-18 | 2009-12-16 | 济南玫德铸造有限公司 | Hydraulic tester for testing air tightness of pipeline connecting pieces |
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| Publication number | Publication date |
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| CN101788369A (en) | 2010-07-28 |
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