CN103787253A - Isobaric pneumatic liquid filling valve and working method thereof - Google Patents
Isobaric pneumatic liquid filling valve and working method thereof Download PDFInfo
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- CN103787253A CN103787253A CN201410017531.1A CN201410017531A CN103787253A CN 103787253 A CN103787253 A CN 103787253A CN 201410017531 A CN201410017531 A CN 201410017531A CN 103787253 A CN103787253 A CN 103787253A
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Abstract
The invention provides an isobaric pneumatic liquid filling valve and a working method thereof. The filling valve comprises a main valve air cylinder, a sealed corrugated pipe, a main valve air cylinder rod, an air valve rod, a main valve rod, an air sealing ring, a support frame, a valve seat, a filling nozzle, a material sealing ring and an air return pipe. According to the invention, the air return pipe is used for controlling the filled liquid level, and a pneumatic valve is used for controlling the supply of liquid and air. In comparison with the conventional electronic filling valve and mechanical filling valve in combination properties, the isobaric pneumatic liquid filling valve disclosed by the invention simultaneously has the advantages of low cost, high liquid level control precision, good environmental sanitation and long service life.
Description
Technical field
The present invention relates to liquid filling device field, specifically a kind of Pneumatic liquid isobar filling valve and method of work thereof.
Background technology
Liquid filling device mainly contains two kinds of mechanical type and electronic types.Wherein, mechanical liquid filling device, because productive costs is low, is safeguarded and simply and is at home widely adopted.But, all more complicated of existing mechanical type liquid filling device structure, and be difficult to form complete isobar filling, thus while easily causing filling vapor liquid, producing and turn over bubble phenomenon, in filling rear container, level imbalance is larger.And in mechanical liquid filling device, the rotating speed height of bottle placer can exert an influence to filling accuracy, thereby filling error is difficult to control.Also exist in structure and clean difficulty, unhygienic; When material enters container, flow stability is poor, and material oxygenation amount in pouring process is high, and in filling rear container, level imbalance is larger, the problem that filling liquid loss is larger.
The liquid isobar filling of external bottle-shaped container is take electronic filling valve as main.The complete isobar filling of electronic liquid filling device, filling stable, filling accuracy is not subject to the impact of bottle placer rotating speed height.But its electrical control complexity, when filling, gas in container is back in material cylinder, (should cancel) (subject matter is that level electrode is fragile to make to expect to decline back pressure gas purity in cylinder, cost is high), cause that the level of oxygen of filling rear material increases (cancellation).And its production and application cost is high, and service life is short.
Summary of the invention
The present invention, in order to solve the problem of prior art, provides a kind of cost low, and liquid level control accuracy is high, and environmental health is good, Pneumatic liquid isobar filling valve and the method for work thereof of long service life.
Filling valve provided by the invention top is provided with main valve cylinder, main valve cylinder is connected with main valve cylinder rod by seal bellows, main valve cylinder rod lower end hangs with air valve stem, air valve stem is inserted in the hole of hollow main valve stem, can in main valve stem, slide up and down, between the liquid level in lower end and the main valve stem of air valve stem, not contact; Between air valve stem and main valve stem endoporus, leave by (back of the body) the body annular space entrance of calming the anger, the air seal circle of air valve stem lower end when air valve stem is depressed into lowest part by main valve cylinder rod; Main valve stem is connected with supported on both sides frame by spring structure, can in bracing frame, slide up and down; Bracing frame is fixedly connected with valve seat, and valve seat below is connected with filling mouth, between valve seat and filling mouth, has material mouth, and in the time that main valve stem is depressed into lowest part by air valve stem, the material seal ring of main valve stem of compacted while of spring below seals material mouth; After unclamping air valve stem, main valve stem resets under action of the spring; Main valve stem below is connected with muffler, and muffler stretches out material mouth.
Further improve, air valve stem is suspended on the lower end of main valve cylinder rod, in main valve stem, can horizontal direction swing, and has increased the alerting ability of main valve stem and air valve stem, has increased the precision of liquid level control.
Further improve, described described spring structure comprises spring, back-up ring and jump ring, and back-up ring is fixed on main valve stem by jump ring, and spring is connected between bracing frame and jump ring.
Further improve, described material mouth place is provided with flow guide sleeve.
Further improve, described muffler is provided with shunt umbrella, increases the flow stability of material.
The present invention also provides a kind of method of work of Pneumatic liquid isobar filling valve, it is characterized in that comprising the following steps:
1) when bottle inlet, main valve cylinder rod stretches out, and air valve stem is pressed to lowest part by main valve cylinder rod, by seal ring by back pressure gas annular space inlet seal; Main valve stem is depressed into lowest part by air valve stem simultaneously, and material seal ring seals material mouth;
2) when container is carried on the back gas punching press, main valve cylinder rod is retracted, and gas passage is opened, and the back pressure gas (28) in annular material cylinder enters internal tank through main valve stem, muffler;
3) when filling, along with back pressure gas continues to flow in container, gaseous tension in final container equates substantially with the pressure in annular material cylinder, now main valve stem overcomes deadweight and moves up with friction under the effect of spring, material seal ring departs from valve seat, material mouth is opened, and filling material, through aperture, valve body and filling mouth, the shunt umbrella of flow guide sleeve, flows in container along the inside face of filling container.
4) after the material liquid surface in container reaches the lower end of muffler, material continues to rise along the inside of muffler and main valve stem, until equilibrium of pressure, now the material in annular material cylinder is at the aperture place of flow guide sleeve because the capillary effect of liquid no longer flows in container, and the liquid level of the material in annular material cylinder to the distance of flow guide sleeve equates with the distance of the liquid end face of main valve stem inside with the liquid level in container; Then main valve cylinder rod stretches out, and back pressure gas annular space entrance and material mouth are closed, and now the liquid level of the lower end of air valve stem and main valve stem inside has certain distance;
5), when container release, gas cubic expansion in stress-relief process of the liquid top in main valve stem, squeezes back the liquid in main valve stem and muffler in container;
In the time there is bottle explosion, container inner pressure declines rapidly, and the downward pressure that material acts on main valve stem is greater than spring thrust upwards, and main valve stem declines immediately, and material mouth is closed automatically; Control main valve cylinder rod simultaneously and stretch out, gas passage is closed.
Beneficial effect of the present invention is:
1, adopt the filling liquid level of muffler control, with the switch of pneumatic valve control liquids and gases, Combination property is compared with machine loading valve with traditional electronic filling valve, has cost low simultaneously, and liquid level control accuracy is high, and environmental health is good, the advantage of long service life.
2, have automatic releasing bottle explosion measure, bottle explosion accident thing occurs can be processed in time automatically, reduces loss.
Accompanying drawing explanation
Fig. 1 is that the present invention is applied in the structural representation in filling apparatus.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is that the present invention is applied in the structural representation in filling apparatus.Whole filling apparatus is arranged on rotating disc, and together rotation.Filling valve top is provided with main valve cylinder 1, main valve cylinder 1 is connected with main valve cylinder rod 3 by seal bellows 2, main valve cylinder rod 3 lower ends hang with air valve stem 4, air valve stem 4 is inserted in the hole of hollow main valve stem 8, can in main valve stem 8, slide up and down, between the liquid level in the lower end of air valve stem 4 and main valve stem 8, not contact.
Between air valve stem 4 and main valve stem 8 endoporus, leave back pressure gas annular space entrance, be connected with the back pressure gas compartment in annular material cylinder 29 by annular space entrance.In the time that air valve stem 4 is depressed into lowest part, the air seal circle 10 of air valve stem 4 lower ends is by annular space inlet seal.
Spring structure comprises spring 7, back-up ring 6 and jump ring 5, and back-up ring 6 is fixed on main valve stem 8 by jump ring 5, and spring 7 is connected between bracing frame 9 and jump ring 5.
Filling mouth 16 belows connect unloading container 21, between filling mouth 16 unloading containers 21, are provided with bottle sealing circle 20, and main valve stem 8 belows are connected with muffler 17, and muffler 17 stretches in unloading container 21 through filling mouth 16.
Need filling container 21 be positioned at bottle supporting cylinder 22 above; In the time that bottle placer rotates, bottle supporting cylinder 22 is controlled container 21 and is risen or decline.Aligning gear 19, bottle sealing circle 20 and roller 11 are combined into one, and in the time that bottle placer rotates, rise or decline along cam 12.
When the present invention is applied in filling apparatus, concrete packaging process is as follows:
1, bottle inlet
Before filling, vacuum valve 23 cuts out with pressure-relief valve 26; Main valve cylinder rod 23 stretches out, and gas passage (being back pressure gas annular space entrance) is closed with fluid passage (being material mouth).
In the time that filling valve rotates with bottle placer, roller 11 rises along cam 12, drives aligning gear 19, bottle sealing circle 20 to rise together, and container 21 is shifted onto above bottle supporting cylinder 22 by other mechanisms.
2, sealing
In the time that bottle placer is rotated further, bottle supporting cylinder 22 rises with container 21; In uphill process, the oral area of container 21 withstands on bottle sealing circle 20, drive bottle sealing circle 20, aligning gear 19, roller 11 to rise together, until the liquid outlet compression of bottle sealing circle 20 and filling mouth 16, make to form between container 21 and filling valve an airtight filling space.
3, container vacuum-pumping
4, container inflation back pressure
Main valve cylinder rod 3 is retracted, and gas passage is opened, and the back pressure gas 28 in annular material cylinder 29 enters container 21 inside through main valve stem 8, muffler 17.After the time of shorter setting, main valve cylinder rod 3 stretches out, and gas passage is closed.
According to the difference of filling material 21, can select once to take out true, inflation back pressure or repeatedly vacuumize, inflate the filling process of back pressure, also can not carry out vacuum pumping, directly inflate back pressure, fill operations.When adopting while repeatedly vacuumizing, inflate the filling process of back pressure, repeat the above-mentioned backpressure operation that vacuumizes, inflates.When last inflation backpressure operation finishes, main valve cylinder rod 3 remains on retracted position.
5, filling
Along with back pressure gas 28 continues to flow in container 21, gaseous tension in final container 21 equates substantially with the pressure in annular material cylinder 29, now main valve stem 8 overcomes deadweight and moves up with friction under the effect of spring 7, seal ring 15 departs from valve seat 14, fluid passage is opened, filling material 27, through aperture, valve body 14 and filling mouth 16, the shunt umbrella 18 of flow guide sleeve 13, flows in container 21 along the inside face of filling container 21.
6, filling end
After the material liquid surface in container 21 reaches the lower end of muffler 17, material 27 continues to rise along the inside of muffler 17 and main valve stem 8, until equilibrium of pressure, now the material 27 in annular material cylinder 29 is at the aperture place of flow guide sleeve 13 because the capillary effect of liquid no longer flows in container 21, and the liquid level of the material 27 in annular material cylinder 29 to the distance of flow guide sleeve 13 equates with liquid level to the distance of the liquid end face of main valve stem 8 inside in container 21.
7, close main valve
After the predefined filling time, main valve cylinder rod 3 stretches out, and back pressure gas passage and fluid passage are closed, and now the liquid level of the lower end of air valve stem 4 and main valve stem 8 inside has certain distance.
8, container release
When filling valve rotates to while approaching bottle outlet position on bottle placer, pressure-relief valve 26 is opened, and the back pressure gas in container 21 is slowly discharged from unloading pressure chamber 24, makes the pressure in container 21 drop to barometric pressure.
Meanwhile, gas cubic expansion in stress-relief process of the liquid top in main valve stem 8, clamp-ons the liquid in main valve stem 8 and muffler 17 in container 21.
9, bottle outlet
In the time that filling valve rotates to bottle outlet position on bottle placer, bottle supporting cylinder 22 does not draw decline along cam, and container 21, aligning gear 19, bottle sealing circle 20, roller 11 decline together, separates with filling mouth 16.Then roller 11 rises along guide rail 12, drives aligning gear 19, bottle sealing circle 20 to rise together, separates with container 21; Final container 21 pushes away filling valve by other mechanism's (not shown)s.
Pouring process finishes.
While there is bottle explosion
In the time that container 21 adopts glass bottle, if there is bottle explosion in pouring process, container 21 internal pressures decline rapidly, and the downward pressure that at this moment material 27 acts on main valve stem 8 is greater than spring 7 thrust upwards, and main valve stem 8 declines immediately, and fluid passage is closed.
In the time of container 21 bottle explosion, aligning gear 19, bottle sealing circle 20 and roller 11 fall automatically because losing to support, and after electrical control gear detects, main valve cylinder rod 3 stretches out, and gas passage is closed.
Technology contrast:
| contrast project | mechanical filling valve | electronic type filling valve | this patent filling valve |
| level gauge mode | muffler | level probe | muffler |
| liquid level control accuracy | ± 5mm | ± 2mm | ± 3mm |
| filling parametric stability | be subject to the impact of bottle placer rotating speed height | be not subject to the impact of bottle placer rotating speed height | be not subject to the impact of bottle placer rotating speed height |
| change the method for filling parameter | physical construction is adjusted, inconvenience | on control computer, change setup parameter, convenient. | on control computer, change setup parameter, convenient. |
| change the method for filling liquid level | change muffler | on control computer, change setup parameter | change muffler |
| manufacturing cost | low | high | low |
| use cost | low | high | low |
| reliability | part is easy to wear | level probe is fragile | long service life |
| physical construction | complicated | simply | simply |
| electrical control | simply | complicated | simply |
| filling valve sanitary conditions | not easy cleaning, poor hygienic | clean thoroughly, health is good | clean thoroughly, health is good |
| bottle placer environmental health situation | each filling front muffler needs to purge, and produces vaporific drop, affects filling environment | do not purge muffler, environmental health is good | do not purge muffler, environmental health is good |
| institute's filling liquid loss | high | low | low |
| back pressure gas loss | high | low | low |
The concrete application approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improve and also should be considered as protection scope of the present invention.
Claims (7)
1. a Pneumatic liquid isobar filling valve, it is characterized in that: filling valve top is provided with main valve cylinder (1), main valve cylinder (1) is connected with main valve cylinder rod (3) by seal bellows (2), main valve cylinder rod (3) lower end hangs with air valve stem (4), air valve stem (4) is inserted in the hole of hollow main valve stem (8), can in main valve stem (8), slide up and down, between the liquid level in the lower end of air valve stem (4) and main valve stem (8), not contact; Between air valve stem (4) and main valve stem (8) endoporus, leave back pressure gas annular space entrance, in the time that air valve stem (4) is depressed into lowest part by main valve cylinder rod (3), the air seal circle (10) of air valve stem (4) lower end is by annular space inlet seal; Main valve stem (8) is connected with supported on both sides frame (9) by spring structure, can in bracing frame (9), slide up and down; Bracing frame (9) is fixedly connected with valve seat (14), valve seat (14) below is connected with filling mouth (16), between valve seat (14) and filling mouth (16), have material mouth, in the time that main valve stem (8) is depressed into lowest part by air valve stem (4), the material seal ring (15) of the compacted while main valve stem of spring (8) below, by the sealing of material mouth, unclamps the rear main valve stem (8) of air valve stem (4) and resets under action of the spring; Main valve stem (8) below is connected with muffler (17), and muffler (17) stretches out material mouth.
2. Pneumatic liquid isobar filling valve according to claim 1, is characterized in that: air valve stem (4) is suspended on the lower end of main valve cylinder rod (3), in main valve stem (8), can horizontal direction swing.
3. Pneumatic liquid isobar filling valve according to claim 1, it is characterized in that: described spring structure comprises spring (7), back-up ring (6) and jump ring (5), it is upper that back-up ring (6) is fixed on main valve stem (8) by jump ring (5), and spring (7) is connected between bracing frame (9) and jump ring (5).
4. Pneumatic liquid isobar filling valve according to claim 1, is characterized in that: described material mouth place is provided with flow guide sleeve (13).
5. Pneumatic liquid isobar filling valve according to claim 1, is characterized in that: described muffler (17) is provided with shunt umbrella (18).
6. a method of work for Pneumatic liquid isobar filling valve, is characterized in that comprising the following steps:
1) when bottle inlet, main valve cylinder rod (3) stretches out, and air valve stem (4) is pressed to lowest part by main valve cylinder rod (3), by seal ring (10) by back pressure gas annular space inlet seal; Main valve stem (8) is depressed into lowest part by air valve stem (4) simultaneously, and material seal ring (15) seals material mouth;
2) when container is inflated back pressure, main valve cylinder rod (3) is retracted, and gas passage is opened, and the back pressure gas (28) in annular material cylinder (29) enters container (21) inside through main valve stem (8), muffler (17);
3) when filling, along with back pressure gas (28) continues to flow in container (21), gaseous tension in final container (21) equates substantially with the pressure in annular material cylinder (29), now main valve stem (8) overcomes deadweight and moves up with friction under the effect of spring (7), material seal ring (15) departs from valve seat (14), material mouth is opened, filling material (27), through aperture, valve body (14) and filling mouth (16), the shunt umbrella (18) of flow guide sleeve (13), flows in container (21) along the inside face of filling container (21);
4) when the material liquid surface in container (21) reaches behind the lower end of muffler (17), material (27) continues to rise along the inside of muffler (17) and main valve stem (8), until equilibrium of pressure, now the material (27) in annular material cylinder (29) is at the aperture place of flow guide sleeve (13) because the capillary effect of liquid no longer flows in container (21), and the liquid level of the material (27) in annular material cylinder (29) to the distance of flow guide sleeve (13) equates with the distance of the liquid end face of main valve stem (8) inside with the liquid level in container (21); Then main valve cylinder rod (3) stretches out, and back pressure gas annular space entrance and material mouth are closed, and now the inner liquid level of the lower end of air valve stem (4) and main valve stem (8) has certain distance;
5), when container release, gas cubic expansion in stress-relief process of the liquid top in main valve stem (8), squeezes back main valve stem (8) and the interior liquid of muffler (17) in container (21).
7. the method for work of Pneumatic liquid isobar filling valve according to claim 6, it is characterized in that: in the time there is bottle explosion, container (21) internal pressure declines rapidly, the downward pressure that material (27) acts on main valve stem (8) is greater than spring (7) thrust upwards, main valve stem (8) declines immediately, and material mouth is closed automatically; Control main valve cylinder rod (3) simultaneously and stretch out, gas passage is closed.
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| CN201410017531.1A CN103787253A (en) | 2014-01-15 | 2014-01-15 | Isobaric pneumatic liquid filling valve and working method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600730A (en) * | 2016-02-03 | 2016-05-25 | 初占武 | Intelligent program-controlled isobaric filling machine for terminal sales of cask beer |
| CN106629550A (en) * | 2016-11-17 | 2017-05-10 | 广州达意隆包装机械股份有限公司 | Multifunctional filling machine and filling method thereof |
| CN107337172A (en) * | 2016-12-20 | 2017-11-10 | 合肥中辰轻工机械有限公司 | One kind is secondary to take out foam filling valve |
| CN109336032A (en) * | 2018-12-04 | 2019-02-15 | 江苏辉河包装机械有限公司 | A kind of isobar filling valve |
| CN112850613A (en) * | 2019-11-28 | 2021-05-28 | 内蒙古伊利实业集团股份有限公司 | Aseptic carbonation system |
| CN112850616A (en) * | 2019-11-28 | 2021-05-28 | 内蒙古伊利实业集团股份有限公司 | Aseptic filling device and aseptic carbonation system |
| CN113998650A (en) * | 2021-10-25 | 2022-02-01 | 广州南沙珠江啤酒有限公司 | Isobaric filling system and filling method thereof |
| CN114988338A (en) * | 2022-05-27 | 2022-09-02 | 合肥中辰轻工机械有限公司 | Isobaric filling valve |
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| US6457495B1 (en) * | 2001-03-31 | 2002-10-01 | Dave Meheen | Filling apparatus and methods |
| CN1886330A (en) * | 2003-12-13 | 2006-12-27 | Khs机械及设备制造股份公司 | Filling element for a filling machine and filling machine provided with filling elements of this type |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600730A (en) * | 2016-02-03 | 2016-05-25 | 初占武 | Intelligent program-controlled isobaric filling machine for terminal sales of cask beer |
| CN106629550A (en) * | 2016-11-17 | 2017-05-10 | 广州达意隆包装机械股份有限公司 | Multifunctional filling machine and filling method thereof |
| CN107337172A (en) * | 2016-12-20 | 2017-11-10 | 合肥中辰轻工机械有限公司 | One kind is secondary to take out foam filling valve |
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| CN109336032B (en) * | 2018-12-04 | 2024-01-30 | 江苏辉河包装机械有限公司 | Isobaric filling valve |
| CN112850613A (en) * | 2019-11-28 | 2021-05-28 | 内蒙古伊利实业集团股份有限公司 | Aseptic carbonation system |
| CN112850616A (en) * | 2019-11-28 | 2021-05-28 | 内蒙古伊利实业集团股份有限公司 | Aseptic filling device and aseptic carbonation system |
| CN113998650A (en) * | 2021-10-25 | 2022-02-01 | 广州南沙珠江啤酒有限公司 | Isobaric filling system and filling method thereof |
| CN114988338A (en) * | 2022-05-27 | 2022-09-02 | 合肥中辰轻工机械有限公司 | Isobaric filling valve |
| CN114988338B (en) * | 2022-05-27 | 2024-01-05 | 合肥中辰轻工机械有限公司 | Isobaric filling valve |
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Application publication date: 20140514 |