CN110053211A - Detection device and method for the gas content for colloid system - Google Patents
Detection device and method for the gas content for colloid system Download PDFInfo
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- CN110053211A CN110053211A CN201910258921.0A CN201910258921A CN110053211A CN 110053211 A CN110053211 A CN 110053211A CN 201910258921 A CN201910258921 A CN 201910258921A CN 110053211 A CN110053211 A CN 110053211A
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- 238000001514 detection method Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 34
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- 239000003292 glue Substances 0.000 claims abstract description 112
- 238000005276 aerator Methods 0.000 claims abstract description 32
- 238000011049 filling Methods 0.000 claims abstract description 32
- 238000007689 inspection Methods 0.000 claims abstract description 30
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 230000008859 change Effects 0.000 claims abstract description 10
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- 238000007789 sealing Methods 0.000 claims description 36
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
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- 238000000576 coating method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/60—Measuring, controlling or regulating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
Abstract
For the detection device and method of the gas content for colloid system, it is suitable for high viscosity liquid filling gas and energy detection gas content, detection device includes for glue aerator, inspection device of air, gas source component；It include blender, gas-adding pipe for glue aerator, motor is connected with blender, and high viscosity liquid is stirred addition gas, and the uniform mixed distribution of bubble is to wherein；It examines device of air and is used for detection gas content, access road A and glue discharging mouth communicate, glue hole is gone back to be connected with after channel B parallel connection through four-way, overflow valve, time Jiao Zui, when first cylinder drives guide rod to be moved upwards up to upper end, the volume of cavity changes, negative pressure is generated, using the change value of pressure of first pressure sensor detection high viscosity liquid, demarcates gas content therein using pressure difference value as electric signal.Device and method are simple and effective, and dynamic response is fast, reliable and stable, and uniform foam cell improves expansion ratio, reduces costs, and does not influence process conditions, are conducive to protect environment.
Description
Technical field
The present invention relates to the detection devices and method for the gas content for colloid system, suitable for filling out to high viscosity liquid
Inflatable body and energy detection gas content, are mainly used for the bi-components such as polyurethane, adhesive, hot melt adhesive or one pack system high viscosity liquid
In dynamic gas filling and content detection.
Background technique
The existing last 100 years history of the technology of macromolecule resin material foaming, the foam bakelite at initial stage the last century 20's,
There is hard polyurethane foams and polystyrene foam the thirties, there is polyethylene, polyvinyl chloride, epoxy resin, phenolic aldehyde the forties
Foam has expandable polystyrene foam and flexible polyurethane foams the fifties.Almost all of macromolecule resin, including thermoplastic
Foamed product is made in property and heat cured can foam.The foaming method of macromolecule resin material can be divided into physical blowing,
Chemical blowing and mechanical foaming.Mechanical foaming is to be mixed into gas in fluid mix by mechanical agitation methods, then through fixed
Type forms foamed product.Main method has: extrusion foaming, injection foaming, calendering foaming, spray coating foaming and casting foaming etc..Its
In, casting foaming is bi-component resin common method, usually contains foaming agent in A glue, after mixing by A glue, B glue, pours
It infuses in mold or product or foaming in plane, for example, casting foaming is one of two component polyurethane processing molding method,
It can be subdivided into gluing foaming, injecting glue foaming, filling-foam etc. again.
Real-life two component polyurethane foaming product, is mainly obtained by the method for chemical blowing or physical blowing
It arrives, foaming agent is added in the feed, foamed to obtain product while reacting.But chemical blowing or physical blowing
Expansion ratio is limited or raw material limits the product that cannot obtain higher expansion ratio, if machine can be passed through in raw material
Tool stirring means are mixed into gas in high viscosity liquid, add a certain amount of gas, realize chemical blowing or physical blowing and
The combination of mechanical foaming cannot not only influence process conditions, can also improve expansion ratio, reduce the cost of product, bring
Better effect.The present invention is based on chemical blowing or physical blowing and mechanical foaming synergistic effect, and exploration obtains performance more
Good product, what is referred here to is the filling gas of high viscosity liquid and the detection device of gas content and method.
Currently, can control be added to the gas content of high viscosity liquid device and method it is more, still, how to detect
Gas content does not have better device and method.
" foaming method and its device " is provided application No. is 200680004844.7 patent application to heavy viscous material
Gas is mixed into high glue by the method for entrained gas, the piston pump for being moved back and forth in cylinder using piston and being sucked and being discharged
Material is spent, detection device and method are not disclosed.
" Polymer Physics foaming body and preparation method thereof ", application No. is 201810697803.5 patent application, high scores
Muon physics foaming body is obtained by thermoplastic elastomer (TPE) or polyolefine material through physical blowing.
" a kind of accurate aerating coating system ", the patent of Patent No. 201611112037.9 provides a kind of aerating gluing
Gas is added in polyurethane by system, and still, aerating Position Design is in the agitating device of gluing head, apart from gluing head position
It sets closely, and after the unloading valve of gluing head, closer to coating nozzle, therefore, gluing header structure is big, mixed gas effect is not easy to guarantee.
" the low pressure acoustic measuring device and method of bubble content in high-viscosity liquid ", application No. is 201110007284.3
Patent application, according to lower pressure bottom film deaeration mechanism and the acoustic characteristic of bubbles burst, applied acoustics test hand
Air bubble content in section detection high viscosity liquid.
For the effectively quick detection for realizing the gas content in high viscosity liquid, it is quite necessary to develop a kind of gas inspection
Device and method is surveyed, for detecting the gas content in high viscosity liquid.
Summary of the invention
The invention discloses a kind of detection devices and method for the gas content for colloid system, and existing detection is overcome to fill
Air bubble content can only be detected using acoustical testing means by setting, and cannot utilize the status of pressure detecting, using inspection device of air, utilize pressure
Force snesor detect high viscosity liquid change value of pressure, detect high viscosity liquid in gas content, be mainly used for polyurethane,
Dynamic gas content detection in the bi-components such as adhesive, hot melt adhesive or one pack system high viscosity liquid.Meanwhile additionally providing one kind
The aerator and method of gas are added into high viscosity liquid.
The technical solution adopted by the present invention to solve the above technical problem is:
For the detection device of the gas content for colloid system, suitable for high viscosity liquid filling gas and it can be detected
In gas content, the detection device include for glue aerator, inspection device of air, gas source component；
Described for glue aerator includes blender, and introduce gases into for glue aerator glue bucket bottom plus
Tracheae, motor are connected with blender, and glue discharging mouth is connected with glue bucket bottom, filling gas mouth, gas-adding pipe and filling gas are needed to communicate, by gas
Body is passed into glue bucket bottom, and bucket bottom is fixed and are in the blade of blender and its lower end, and motor band movable vane piece rotates, and stirring is high
Gas is added in viscous liquid mixing, and the uniform mixed distribution of bubble exports when for glue from glue discharging mouth to wherein；
The inspection device of air is used to detect the gas content in the high viscosity liquid for colloid system, including first pressure sensing
Device demarcates gas content therein using the pressure value of its detection as electric signal, examines the access road A and glue discharging mouth of device of air
It communicates, goes back to glue hole and be connected with after channel B parallel connection through four-way, overflow valve, time Jiao Zui, said connecting path is used for back glue access and follows
Ring, another access are connected to four-way, metering pump, the high viscosity liquid of conveying filling bubble.
For the detection method of the gas content for colloid system, suitable for high viscosity liquid filling gas and gas can be detected
Body content, using the above-mentioned detection device for the gas content for colloid system:
It is as follows that gas step is added:
(1) filling gas mouth is passed through gas, and gas enters the glue bucket bottom for glue aerator from gas-adding pipe；
(2) motor band movable vane piece rotates, and the gas that stirring high viscosity liquid mixing is added, the uniform mixed distribution of bubble arrives it
In, it is exported when for glue from glue discharging mouth；
Steps are as follows for detection gas:
(1) gas nozzle A is passed through compressed air, and cylinder rod drive guide rod is in the lower end of cavity；
(2) third cylinder and the second cylinder are passed through compressed air, and the first cone valve, the second cone valve is pushed to move right, and open
First access and alternate path；
(3) to inspection device of air transfer of highly viscous liquid, from channel, A enters cavity, respectively from channel B, time glue hole
Outflow enters four-way, and a part is returned to by overflow valve, time Jiao Zui for glue aerator, and another part passes through metering pump, will
The equally distributed high viscosity liquid of bubble is filled, the place of needs is transported to；
(4) for high viscosity liquid full of after cavity, third cylinder and the second cylinder are passed through compressed air, the first cone valve, second
Cone valve is moved to the left, and closes the first access and alternate path；
(5) high viscosity liquid continues to enter four-way from returning outflow in glue hole, returns in glue aerator and/or entering
Into metering pump；
(6) gas nozzle B is passed through compressed air, and cylinder rod drives guide rod to be in the upper end of cavity, and cavity generation negative pressure, first presses
Force snesor detects pressure；
(7) control device is made using the change value of pressure of first pressure sensor detection high viscosity liquid using pressure value
Gas content therein is demarcated for electric signal, to how much detect gas content therein indirectly；
Above-mentioned steps realize that automatic control or dynamic control under control of the control means；
When not needing detection, the first access and alternate path are opened, and high viscosity liquid flows out back from channel B, time glue hole
Into four-way, continue to convey according to (above-mentioned steps 3).
The beneficial effects of the present invention are:
1. providing the detection device and method that gas content is new in a kind of high viscosity liquid, overcoming current detection can only
By the single situation of low pressure acoustic measuring device and method, method is simple and effective, and dynamic response is fast, implements reliable and stable.
2. high viscosity liquid uses the method entrained gas of mechanical foaming, casting foaming, uniform foam cell is consistent, further mentions
High foamability reduces the cost of product.
3. realizing the combination of chemical blowing or physical blowing and mechanical foaming, process conditions are not influenced, can also be mentioned
High foamability reduces the cost of product.
4. the gas being added is air or inert gas, be conducive to protect environment.
5. macromolecule resin material foaming does not need nucleating agent, simple process.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention for the detection device of the gas content for colloid system, and the gas of addition can
To be air, carbon monoxide, carbon dioxide, nitrogen etc..
Fig. 2 is another structural schematic diagram of the present invention for the detection device of the gas content for colloid system, is added
Gas be compressed air.
Fig. 3 is the structural schematic diagram for examining device of air.
Fig. 4 is the cross-sectional view for examining the second cone valve and the first cone valve of device of air.
Fig. 5 is the left view of Fig. 3.
Fig. 1, cross line not connection in 2, arrow direction indicate the runner direction of gas and high viscosity liquid, glue bucket it is upper
The dotted line of face liquid level sensor schematically shows the liquid level of high viscosity liquid.
1. gas nozzle A in figure, 2. first cylinders, 3. gas nozzle B, 4. connector sleeves, 5. cylinder rods, 6. transition piece A, 7. washers, 8.
Sealing element, 9. sealing shrouds, 10. main valve bodies, 11. cavitys, 12. second cone valves, 13. channel A, 14. valve rod A, 15. guide sleeves, 16. is close
Seal A, 17. brackets, 18. transition piece B, 19. cylinder block A, 20. second cylinders, 21. channel B, 22. first cone valves, 23. valve rods
B, 24. flanges, 25. first pressure sensors, 26. sealing rings, 27. sealing ring B, 28. times glue holes, 29. guide rods, 30. third gas
Cylinder, 31. cylinder block B, 32. sealing ring C, 33. runners, 34. motors, 35. temperature sensors, 36. overflow valves, 37. four-ways, 38.
Second pressure sensor, 39. metering pumps, 40. gluing heads, 41. second reversal valves, 42. third reversal valves, 43. liquid level sensors,
44. time Jiao Zui, 45. glue discharging mouths, 46. for glue aerator, 47. inspection device of air, 48. pneumatic triple pieces, 49. first reversal valves,
50. blender, 51. gas-adding pipes, 52. the 4th reversal valves, 53. filling gas mouths, 54. blades.
Specific embodiment
Embodiment one
How above-mentioned gas content is detected, all the time without preferred solution, if be added excessive or very few
Gas, product properties is necessarily affected, how detection gas content, especially dynamic on-line checking, can obtain more preferable
The product of performance is industry problem in the urgent need to address, and innovative point of the invention is also just this, i.e., in one apparatus
Realize high viscosity liquid filling gas and detection gas content.
The invention discloses a kind of detection devices for the gas content for colloid system, for filling to high viscosity liquid
Gas and energy detection gas content, are mainly used in the bi-components such as polyurethane, adhesive, hot melt adhesive or one pack system high viscosity liquid
Dynamic gas content detection, in high viscosity liquid or the known high viscosity liquid containing chemical foaming agent or physical blowing agent
Gas is added in body, plays auxiliary foaming effect, the product of higher expansion ratio can be obtained, gas, which is added, not to be influenced to process work
Skill condition reduces the cost of product.
The present invention is used for its structure of the detection device of gas content and interconnected relationship such as Fig. 1-5 institute for colloid system
Show, abbreviation detection device, is suitable for high viscosity liquid filling gas and energy detection gas content, the detection device includes supplying
Glue aerator 46, inspection device of air 47, gas source component；
It is described to include blender 50 for glue aerator 46, and introduce gases into the glue bucket bottom for glue aerator 46
The gas-adding pipe 51 in portion, motor 34 and blender 50 connect, and glue discharging mouth 45 is connected with glue bucket bottom, filling gas mouth 53,51 and of gas-adding pipe
The gas that need to be filled communicates (Q9, Q8), gas is passed into glue bucket bottom, the gas that filling gas mouth 53 (Q9, Q8) is added can be
Air, carbon monoxide, carbon dioxide, nitrogen etc.；The blade 54 of blender 50 and its (blender 50) lower end are fixed and are in
Bucket bottom, motor 34 are rotated with movable vane piece 54, and gas is added in stirring high viscosity liquid mixing, and bubble (gas filling) uniformly mixes
It is distributed to wherein, mixed bubble does not need the foaming agent of chemical blowing or physical blowing raw material, nucleating agent, from plastic emitting when for glue
Mouth 45 (A101) output；The outlet side of gas-adding pipe 51 includes more than one hole, forms showerhead formula through-hole, gas is from hole
Out, it is sufficient filling with convenient for gas.
The present invention examines its structure of device of air 47 and interconnected relationship as shown in Figure 1-3, being used to detect the height for colloid system
Gas content in viscous liquid, including first pressure sensor 25, the pressure difference value detected using first pressure sensor 25
Gas content therein is demarcated as electric signal, the access road A13 and glue discharging mouth 45 of the inspection device of air 47 communicate (A101),
It returns after glue hole 28 (A103 access) and channel B21 (A102 access) parallel connection through threeway, four-way 37, overflow valve 36, time glue mouth 44
(A105 access) is connected, and said connecting path is used for back glue access circulation, another access and four-way 37,39 (A104 of metering pump
Access) connection, metering pump 39 is connected with gluing head 40 or glue injecting head, accurate to convey the filling equally distributed high viscosity liquid of bubble
Body, for example, perhaps injecting glue foaming is input in gluing head 40 or glue injecting head for gluing foaming, is obtained for being poured foaming
Foaming product；Overflow valve 36 is for adjusting the pressure for balancing back 39 access of glue access and metering pump.
Preferably, the inspection device of air 47 further includes main valve body 10, the first cylinder 2, sealing shroud 9, connector sleeve 4, the first gas
2 sequence straight line of cylinder is fixed on the upper end of main valve body 10, and 10 vertical direction of main valve body is equipped with cavity 11, is respectively equipped in horizontal direction
First valve group and the second valve group；Cylinder rod 5 and transition piece A6, guide rod 29 are sequentially connected, and pass through connector sleeve 4, sealing shroud 9 and cavity
11 interstitial hole is equipped with washer 7, multiple sealing elements 8 between sealing shroud 9 and cylinder rod 5；Sealing ring C32 is located at sealing shroud 9 and master
Between valve body 10；
First valve group includes the first cone valve 22, is arranged in the upper horizontal hole of main valve body 10 and is connected with cavity 11
The taper hole that logical upper horizontal hole is equipped with and the first cone valve 22 matches, upper horizontal hole are connected with channel B21, and described first
Valve group is used to open or close the first access between cavity 11 and channel B21；
Second valve group includes the second cone valve 12, is arranged in the lower horizontal hole of main valve body 10 and is connected with cavity 11
The taper hole that logical lower horizontal hole is equipped with and the second cone valve 12 matches, lower horizontal hole and channel A13, glue hole 28 is gone back to (in Fig. 1
A103) it is connected, second valve group is used to open or close the alternate path between cavity 11 and channel A13；
First pressure sensor 25 is arranged on main valve body 10, and test side and cavity 11 contact, for detecting cavity 11
In high viscosity liquid pressure；
When detection, when the first cone valve 22, the second cone valve 12 move right, the first valve group of opening and the second valve group, first is logical
Road and alternate path are open, and high viscosity liquid enters cavity 11 from channel A13 (A101 in Fig. 1), from channel B21 (in Fig. 1
A102), outflow in glue hole 28 (A103 in Fig. 1) is returned, arrow direction is liquid flow direction in figure, and guide rod 29 is in cavity 11
Lower end, high viscosity liquid are full of cavity 11, and the first cone valve 22 is moved to the left the first path blockade, and the second cone valve 12 is moved to the left
Alternate path is closed, high viscosity liquid can only enter from channel A13, flow out from 28 major loop of glue hole is returned；First cylinder 2 drives
When guide rod 29 is moved upwards up to upper end, the volume of cavity 11 changes, and the volume of increase is that guide rod 29 is moved up apart from portion
The volume (volume of 29 movable part of guide rod) divided, volume increase generate negative pressure, i.e. vacuum state, less than one standard of pressure is big
Air pressure；When containing gas in high viscosity liquid, gas phase is big to that can be changed with compression volume, liquid cannot compression volume change
Becoming smaller, gas phase is obvious for the stereomutation of liquid, and gas content is big, after gas is compressed, bigger, the pressure of stereomutation
Force value is bigger (vacuum is low) relative to pressure when being free of gas；11 medium-high viscosity liquid of cavity is detected using first pressure sensor 25
The change value of pressure of body demarcates gas content therein using pressure difference value as electric signal, to detect gas therein indirectly
Body content.
The dynamic gas content detection refers to that high viscosity liquid can be carried out in the case where being continuously conveyed, and does not influence to lead
The conveying in circuit, in this inspection device of air 47, it is major loop channel that channel A13 is connected to time glue hole 28, no matter in detection shape
State or non-detection status, high viscosity liquid all enter from channel A13, form major loop channel from outflow in glue hole 28 is returned, i.e.,
For dynamic detection may be implemented under glue working condition, static detection also may be implemented.
Preferably, the detection device for the gas content for colloid system, it is described to further include for glue aerator 46
Liquid level sensor 43, temperature sensor 35, upper and lower two liquid level sensors 43 are located at glue bucket bucket wall, detect and control automatically high viscous
Spend the position of liquid；Temperature sensor 35 is connected with glue bucket, detects and controls the temperature of high viscosity liquid automatically；
The detection device further includes the second pressure sensor 38 being connected with four-way 37, is detected and controlled automatically for glue
The pressure of the high viscosity liquid of system.
Preferably, the guide rod 29 of the inspection device of air 47 moves up, several between change value of pressure and gas content
Situation:
(1) high viscosity liquid does not contain gas, and pressure is small (vacuum is high), the pressure that at this moment first pressure sensor 25 detects
Power is absolute value A；
(2) high viscosity liquid contains the gas of setting value, for example, setting value is 5%, since the volume of gas can be opposite
Compression, volume are small with respect to the first (1) variation, and the pressure that at this moment first pressure sensor 25 detects is calibration value B；Calibration value
B is greater than absolute value A, B > A；
(3) gas contained in high viscosity liquid changes, for example, when being less than setting value, since the volume of gas can
With opposite compression, with respect to second of volume (2) becomes smaller, and the pressure that at this moment first pressure sensor 25 detects is dynamic value C1,
Dynamic value C1 is greater than absolute value A, and dynamic value C1 is greater than calibration value B, i.e. C1 > B > A；
(4) gas contained in high viscosity liquid changes, for example, when being greater than the set value, since the volume of gas can
With opposite compression, with respect to second of volume (2) becomes larger, and the pressure that at this moment first pressure sensor 25 detects is dynamic value C2,
Dynamic value C2 is less than absolute value A, and dynamic value C2 is less than calibration value B, i.e. B > A > C2；
By above-mentioned derivation it is found that dynamic value C1 is greater than dynamic value C2, i.e. C1 > B > C2, C1 > C2；
By dynamic value C1, dynamic value the C2 difference comparsion with calibration value B respectively, it is converted into electric signal using difference,
How much is the content of gas in indirect detection high viscosity liquid, realizes quantitative detection.
The inspection device of air 47 further includes being converted into output for detecting pressure and difference being converted to pressure signal
The automatic control device of electric signal, control device divide the difference of above-mentioned absolute value A, calibration value B, dynamic value C1, dynamic value C2
Calculatings is compared in analysis, the content of detection gas, and driving for glue aerator 46 to high viscosity liquid aerating, agitating device is by gas
It is stirred with high viscosity liquid, gas is uniformly distributed wherein；
When gas content is less than setting value, dynamic value C1 is greater than calibration value B, for glue aerator 46 into high viscosity liquid
Entrained gas increases gas content, stops aerating when reaching calibration value B；
When gas content is greater than the set value, dynamic value C2 is less than calibration value B, stops aerating for glue aerator 46.
Preferably, in the inspection device of air 47, first valve group further include with the first cone valve 22 connection valve rod B23,
Transition piece B18, third cylinder 30, flange 24, cylinder block B31 are fixed on the right side in the upper horizontal hole of main valve body 10, third gas
Cylinder 30 is fixed on cylinder block B31, and bracket 17, sealing ring 26, sealing ring B27 are equipped between valve rod B23 and upper horizontal hole, close
The sealing elements such as seal ring 26, sealing ring B27, prevent high viscosity liquid from entering the right side of channel B21；Third cylinder 30 pushes the
One cone valve 22 moves left and right.
Preferably, in the inspection device of air 47, second valve group further include with the second cone valve 12 connection valve rod A14,
Transition piece B18, the second cylinder 20, flange 24, cylinder block A19 are fixed on the right side in the lower horizontal hole of main valve body 10, the second gas
Cylinder 20 is fixed on cylinder block A19, and guide sleeve 15, sealing ring A16, bracket 17, sealing are equipped between valve rod A14 and lower horizontal hole
Ring 26, sealing ring B27, the above-mentioned right side for waiting sealing elements to prevent high viscosity liquid from entering channel A13；Second cylinder 20 pushes
Second cone valve 12 moves left and right.Share ware designs in first valve group, the second valve group, simplifies structure；Flange 24 can also be distinguished
It is integral with cylinder block A19, cylinder block B31 design.
Preferably, in the inspection device of air 47, one is equipped on the right side of the cone of first cone valve 22 and the second cone valve 12
With upper runner 33 (channel enclosed between illustrated trench and upper horizontal hole, lower horizontal hole), opened for the first cone valve 22
When, the high viscosity liquid of cavity 11 is flowed into channel B21, and when opening for the second cone valve 12, the high viscosity liquid of cavity 11
Body is flowed into back in glue hole 28；First cone valve 22 and the second cone valve 12 are threadedly coupled with valve rod B23, valve rod A14 respectively,
The cone of threaded portion and cone valve can two kinds of materials be made, such as conical section elastic material, threaded portion metal material.
The inspection device of air 47,29 outer diameter of guide rod are less than or equal to the internal diameter of cavity 11, (the insertion sky of the guide rod 29
Chamber 11) effectively movable length be less than or equal to cavity 11 depth.
Preferably, the detection device for the gas content for colloid system, the gas source component includes pneumatic three
Part 48, the connection relationship of gas source component are detailed in Fig. 1, pneumatic triple piece 48 respectively with the first reversal valve 49, the second reversal valve 41
(Q1), 52 connection of the 4th reversal valve, the first reversal valve 49 are connected to the second cylinder 20 (Q6, Q7), control the second valve group movement；The
Two reversal valves 41 are connected to the first cylinder 2 (Q2, Q3), control the first cylinder 2 movement；The gas source of third reversal valve 42 and gas
(Q8), filling gas mouth 53 (Q9) is connected to, and controls the on-off of gas；4th reversal valve 52 is connected to third cylinder 30 (Q4, Q5), control
The movement of first valve group.
Preferably, the inspection device of air 47, the high viscosity liquid can be bi-component or one-component resin, such as poly- ammonia
Ester, formaldehyde resin, epoxy resin, silicone adhesive, silica gel, butyl rubber, adhesive, hot melt adhesive etc. detect gas content therein, or
Person is the high viscosity liquid containing chemical foaming agent or physical blowing agent；The high viscosity liquid can replace with medium viscosity liquid or
Person's low-viscosity (mobile) liquid, fluid lesser for viscosity is equally applicable, such as the lesser liquid of the viscosity such as water, ethyl alcohol, epoxy resin
In gas content measurement.
The inspection device of air 47, is mixed into gas in high viscosity liquid by mechanical agitation methods, adds a certain amount of
Gas can obtain higher foaming times so that high viscosity liquid or the liquid comprising chemical foaming agent or physical blowing agent
The product of rate, realizes the combination of chemical blowing or physical blowing and mechanical foaming, and synergistic effect cannot not only influence technique
Condition, reduces the cost of product, and performance is more preferable.The gas is air, carbon monoxide, carbon dioxide, nitrogen, ammonia, hydrocarbon
Compound, inert gas etc., the inspection device of air 47 is for detecting above-mentioned gas.Above-mentioned gas is mixed into high viscosity liquid, nothing
It is malicious, odorless, corrosion-free act on, do not burn, thermal stability is good, expansion in a liquid when chemical reaction, gaseous state does not occur under gaseous state
It is low lower than the cost of aerial diffusion velocity, especially air, carbon dioxide and nitrogen to dissipate speed, gas diffusion velocity
Fastly, uniformly at bubble, and can be fire-retardant, pollution-free, be conducive to environmental protection, therefore application value is higher.
Embodiment two
The present invention is used for its structure of the detection device of gas content and interconnected relationship such as Fig. 2-5 institute for colloid system
Show, embodiment and embodiment one is different is, the gas of addition is compressed air, pneumatic triple piece 48 respectively with the first commutation
Valve 49, the second reversal valve 41 (Q1), third reversal valve 42 (Q8), 52 connection of the 4th reversal valve；
Described for glue aerator 46 includes blender 50, gas-adding pipe 51, and motor 34 and blender 50 connect, and by gas
Body is introduced into the gas-adding pipe 51 of the glue bucket bottom for glue aerator 46, the compression of filling gas mouth 53, the gentle source component of gas-adding pipe 51
Air communicates (Q9, Q8), and compressed air is passed into glue bucket bottom；
Metering pump 39 is not connect with gluing head, and metering pump 39 (A104) will fill bubble (gas) equally distributed high viscosity
Liquid is transported to the place of needs.Other compositions and connection relationship are the same as example 1.
Embodiment three
For the detection method of the gas content for colloid system, suitable for high viscosity liquid filling gas and gas can be detected
Body content, the dynamic gas filling being mainly used in the bi-components such as polyurethane, adhesive, hot melt adhesive or one pack system high viscosity liquid
And content detection, expansion ratio is higher in order to obtain, the better product of performance, using the above-mentioned gas content for for colloid system
Detection device, referring to Fig. 1-5；
It is as follows that gas step is added:
(1) filling gas mouth 53 is passed through the gases such as compressed air or nitrogen or carbon dioxide, and gas enters confession from gas-adding pipe 51
The glue bucket bottom of glue aerator 46；
(2) motor 34 is rotated with movable vane piece 54, the gas that stirring high viscosity liquid mixing is added, and bubble (gas) is uniformly mixed
Conjunction is distributed to wherein, and mixed bubble does not need the foaming agent of chemical blowing or physical blowing raw material, nucleating agent, from out when for glue
Glue mouth 45 (A101) exports (for glue)；
Steps are as follows for detection gas:
(1) gas nozzle A1 is passed through compressed air, and the drive guide rod 29 of cylinder rod 5 is in the lower end of cavity 11；
(2) third cylinder 30 and the second cylinder 20 are passed through compressed air, and the first cone valve 22, the second cone valve 12 is pushed to move right
It is dynamic, open the first access and alternate path；
(3) to inspection 47 transfer of highly viscous liquid of device of air, from channel, A13 enters cavity 11, respectively from channel B21
(A102), outflow in glue hole 28 (A103) is returned, enters threeway, four-way 37, a portion is by overflow valve 36, time glue mouth 44
(A105) it returns to for glue aerator 46, another part passes through metering pump 39 (A104), and filling bubble (gas) is uniformly distributed
High viscosity liquid, be transported to the place of needs, for be poured foaming, for example, for gluing foaming or injecting glue foaming, input
Into gluing head 40 or glue injecting head, foaming product is obtained；
(4) for high viscosity liquid full of after cavity 11, third cylinder 30 and the second cylinder 20 are passed through compressed air, the first cone valve
22, the second cone valve 12 is moved to the left, and closes the first access and alternate path；
(5) high viscosity liquid, which continues to flow out from time glue hole 28 (A103), enters four-way 37, returns to for glue aerator
It in 46 and/or enters in metering pump 39, is transported to the place of needs；
(6) gas nozzle B3 is passed through compressed air, and cylinder rod 5 drives guide rod 29 to be in the upper end of cavity 11, and cavity 11 generates negative
It presses (vacuum), first pressure sensor 25 detects pressure；
(7) control device detects the change value of pressure of high viscosity liquid using first pressure sensor 25, utilizes pressure value
Gas content therein is demarcated as electric signal, to how much detect gas content therein indirectly；
Above-mentioned steps realize automatic control or dynamic On-line Control under control of the control means, for example, PLC can be used
Automatic control or computer controlled automatic.Other compositions and connection relationship are identical as embodiment one, embodiment two.
When not needing detection, the first access and alternate path are opened, and high viscosity liquid is flowed from channel B21, time glue hole 28
It is returned in four-way 37 out (above-mentioned steps 2), continues to convey according to above-mentioned steps 3.
It is pointed out that wherein, gas nozzle A and gas nozzle B, transition piece A and transition piece B, valve rod A and valve rod B, cylinder block A
With cylinder block B, in A, B be it is clear in order to describe, structure function effect is same or similar, is equivalent to first, second.
A glue, the B glue of bi-component resin, A, B therein be it is clear in order to describe, be equivalent to first, second.
First cone valve and the second cone valve, the second cylinder and third cylinder, it is therein which, be intended merely to difference component,
Structure function effect is same or similar.
First reversal valve, the second reversal valve, third reversal valve, the 4th reversal valve, are intended merely to difference component, and structure is made
It is same or similar with effect.
Sealing ring A, sealing ring B, sealing ring C, sealing shroud, sealing ring, sealing element, washer are intended merely to difference component,
Structure function effect is same or similar, is to seal, and A, B, C, D are equivalent to first, second, third, fourth, and so on.
Wherein, channel A, channel B, be it is clear in order to describe, be equivalent to the first, second through-hole.
Wherein, right side, upside, downside, centre, upper end, to the left, to the right, end, vertical, level, outer diameter, internal diameter up and down
Deng only corresponding diagram 1 come the position described and restriction, in order to clearly briefly, not represent its accurate location in practice.
Above embodiment description is to understand the present invention for the ease of technical field technical staff.Those skilled in the art
Member easily can make various modifications to these embodiments, and apply the general principles described here to other examples
Without passing through creative work.Therefore, the present invention is not limited to above-mentioned specific embodiments, and all those skilled in the art are according to this
The technical solution of the either equivalence replacement of equivalents obtained from the technical inspiration of invention, all falls within rights protection model of the present invention
Within enclosing.
Claims (10)
1. a kind of detection device for the gas content for colloid system is suitable for high viscosity liquid filling gas and can detect
Gas content therein, it is characterised in that: the detection device includes for glue aerator, inspection device of air, gas source component；
Described for glue aerator includes blender, and introduces gases into the aerating of the glue bucket bottom for glue aerator
Pipe, motor connects with blender, and glue discharging mouth is connected with glue bucket bottom, filling gas mouth, gas-adding pipe and filling gas is needed to communicate, by gas
It is passed into glue bucket bottom, bucket bottom is fixed and are in the blade of blender and its lower end, and motor band movable vane piece rotates, and stirs high viscous
It spends liquid mixing and gas is added, the uniform mixed distribution of bubble exports when for glue from glue discharging mouth to wherein；
The inspection device of air is used to detect the gas content in the high viscosity liquid for colloid system, including first pressure sensor,
Gas content therein is demarcated using the pressure value of its detection as electric signal, examines the access road A and glue discharging mouth phase of device of air
It is logical, it goes back to glue hole and is connected with after channel B parallel connection through four-way, overflow valve, time Jiao Zui, said connecting path is used for back glue access and follows
Ring, another access are connected to four-way, metering pump, the high viscosity liquid of conveying filling bubble.
2. the detection device according to claim 1 for the gas content for colloid system, it is characterised in that: the inspection gas
Device further includes main valve body, the first cylinder, and sealing shroud, connector sleeve, the first cylinder sequence straight line are fixed on the upper end of main valve body, main
Valve body vertical direction is equipped with cavity, is respectively equipped with the first valve group and the second valve group in horizontal direction；Cylinder rod and transition piece A, it leads
Bar is sequentially connected, and across the interstitial hole of connector sleeve, sealing shroud and cavity, washer, sealing element are equipped between sealing shroud and cylinder rod,
Sealing ring C is between sealing shroud and main valve body；
First valve group includes the first cone valve, and the upside water being connected in the upper horizontal hole of main valve body with cavity is arranged in
Flat hole is equipped with and the taper hole that matches of the first cone valve, upper horizontal hole are connected with channel B, first valve group be used to open or
Close the first access between cavity and channel B；
Second valve group includes the second cone valve, and the downside water being connected in the lower horizontal hole of main valve body with cavity is arranged in
The taper hole that flat hole is equipped with and the second cone valve matches, lower horizontal hole and channel A, time glue hole are connected, and second valve group is used
To open or close the alternate path between cavity and channel A；
First pressure sensor is arranged on main valve body, test side and cavity contact, for detecting the high viscosity liquid in cavity
The pressure of body；
When first cylinder drives guide rod to be moved upwards up to upper end, the volume of cavity changes, and generates negative pressure, works as high viscosity liquid
In contain gas when, gas phase is obvious for the stereomutation of liquid；Cavity medium-high viscosity is detected using first pressure sensor
The change value of pressure of liquid demarcates gas content therein using pressure difference value as electric signal.
3. the detection device according to claim 1 for the gas content for colloid system, it is characterised in that: described for glue
Aerator further includes liquid level sensor, temperature sensor, and upper and lower two liquid level sensors are located at glue bucket bucket wall, automatic detection and
Control the position of high viscosity liquid；Temperature sensor is connected with glue bucket, detects and controls the temperature of high viscosity liquid automatically；
The detection device further includes the second pressure sensor being connected with four-way, detects and controls the height for colloid system automatically
The pressure of viscous liquid.
4. the detection device according to claim 1 for the gas content for colloid system, it is characterised in that: the inspection gas
The guide rod of device moves up, several situations between change value of pressure and gas content:
(1) high viscosity liquid does not contain gas, and the pressure that first pressure sensor detects is absolute value A；
(2) high viscosity liquid contains the gas of setting value, and the pressure that first pressure sensor detects is calibration value B, B > A；
(3) gas contained in high viscosity liquid changes, when being less than setting value, pressure that first pressure sensor detects
For dynamic value C1, C1 > B > A；
(4) gas contained in high viscosity liquid changes, when being greater than the set value, pressure that first pressure sensor detects
For dynamic value C2, B > A > C2；
By above-mentioned derivation it is found that dynamic value C1 is greater than dynamic value C2, i.e. C1 > B > C2, C1 > C2；
By dynamic value C1, dynamic value the C2 difference comparsion with calibration value B respectively, it is converted into electric signal using difference, is detected
How much is the content of gas in high viscosity liquid；
The inspection device of air further includes for detecting pressure and difference being converted to the electric signal that pressure signal is converted into output
Automatic control device, control device compares the differential analysis of above-mentioned absolute value A, calibration value B, dynamic value C1, dynamic value C2
It calculates, the content of detection gas, and drives for glue aerator to high viscosity liquid aerating, agitating device is by gas and high viscosity
Liquid agitation mixing, gas are uniformly distributed wherein；
When gas content is less than setting value, dynamic value C1 is greater than calibration value B, is mixed into gas into high viscosity liquid for glue aerator
Body increases gas content, stops aerating when reaching calibration value B；
When gas content is greater than the set value, dynamic value C2 is less than calibration value B, stops aerating for glue aerator.
5. the detection device according to claim 1 for the gas content for colloid system, it is characterised in that: the inspection gas
In device, first valve group further includes the valve rod B, transition piece B, third cylinder connected with the first cone valve, flange, cylinder block B
It is fixed on the right side in the upper horizontal hole of main valve body, third cylinder is fixed on cylinder block B, between valve rod B and upper horizontal hole
Equipped with bracket, sealing ring, sealing ring B, third cylinder pushes the first cone valve to move left and right.
6. the detection device according to claim 1 for the gas content for colloid system, it is characterised in that: the inspection gas
In device, second valve group further includes the valve rod A, transition piece B, the second cylinder connected with the second cone valve, flange, cylinder block A
It is fixed on the right side in the lower horizontal hole of main valve body, the second cylinder is fixed on cylinder block A, between valve rod A and lower horizontal hole
Equipped with guide sleeve, sealing ring A, bracket, sealing ring, sealing ring B, the second cylinder pushes the second cone valve to move left and right.
7. the detection device according to claim 1 for the gas content for colloid system, it is characterised in that: the inspection gas
In device, more than one runner is equipped on the right side of the cone of first cone valve and the second cone valve, it is empty when being opened for the first cone valve
The high viscosity liquid of chamber is flowed into channel B, and when opening for the second cone valve, the high viscosity liquid of cavity is flowed into go back to glue hole
In；
The guide rod outer diameter is less than or equal to the internal diameter of cavity, and effective movable length of the guide rod is less than or equal to the depth of cavity.
8. the detection device according to claim 1 for the gas content for colloid system, it is characterised in that: the gas source
Component includes pneumatic triple piece, pneumatic triple piece respectively with the first reversal valve, the second reversal valve, the 4th reversal valve connection, first
Reversal valve and the connection of the second cylinder, control the second valve group movement；Second reversal valve and the connection of the first cylinder, the first cylinder of control are dynamic
Make；Third reversal valve is connected to the gas source of gas, filling gas mouth, controls the on-off of gas；4th reversal valve is connected to third cylinder,
Control the movement of the first valve group.
9. the detection device according to claim 1 for the gas content for colloid system, it is characterised in that: described high viscous
Spending liquid is bi-component or one-component resin, or the high viscosity liquid containing chemical foaming agent or physical blowing agent；It is described
High viscosity liquid can replace with medium viscosity liquid or low-viscosity (mobile) liquid；
It is mixed into gas in high viscosity liquid by mechanical agitation methods, so that high viscosity liquid or including chemical foaming agent
Or the liquid of physical blowing agent, the product of higher expansion ratio can be obtained.
10. a kind of detection method for the gas content for colloid system is suitable for high viscosity liquid filling gas and can examine
Survey gas content, using described in the claims 1-9 it is any for for colloid system gas content detection device,
It is characterized by:
It is as follows that gas step is added:
(1) filling gas mouth is passed through gas, and gas enters the glue bucket bottom for glue aerator from gas-adding pipe；
(2) motor band movable vane piece rotates, the gas that stirring high viscosity liquid mixing is added, the uniform mixed distribution of bubble to wherein,
It is exported when for glue from glue discharging mouth；
Steps are as follows for detection gas:
(1) gas nozzle A is passed through compressed air, and cylinder rod drive guide rod is in the lower end of cavity；
(2) third cylinder and the second cylinder are passed through compressed air, and the first cone valve, the second cone valve is pushed to move right, and open first
Access and alternate path；
(3) to inspection device of air transfer of highly viscous liquid, from channel, A enters cavity, flows out from channel B, time glue hole respectively,
Four-way is entered, a part is returned to by overflow valve, time Jiao Zui for glue aerator, and another part passes through metering pump, will fill
The equally distributed high viscosity liquid of bubble, is transported to the place of needs；
(4) for high viscosity liquid full of after cavity, third cylinder and the second cylinder are passed through compressed air, the first cone valve, the second cone valve
It is moved to the left, closes the first access and alternate path；
(5) high viscosity liquid continues to enter four-way from returning outflow in glue hole, returns in glue aerator and/or entering meter
In amount pump；
(6) gas nozzle B is passed through compressed air, and cylinder rod drive guide rod is in the upper end of cavity, and cavity generates negative pressure, and first pressure passes
Sensor detects pressure；
(7) control device detects the change value of pressure of high viscosity liquid using first pressure sensor, using pressure value as electricity
Signal scaling gas content therein, to how much detect gas content therein indirectly；
Above-mentioned steps realize that automatic control or dynamic control under control of the control means；
When not needing detection, the first access and alternate path are opened, and high viscosity liquid outflows back to four from channel B, time glue hole
In logical, continue to convey according to above-mentioned steps 3.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3433017A1 (en) * | 1984-09-07 | 1986-03-20 | Bayerische Motoren Werke AG, 8000 München | Device for measuring gas contents in liquids |
| US6393893B1 (en) * | 1997-07-11 | 2002-05-28 | Edf Polymer Applikation Maschinenfabrik Gmbh | Measuring device and method for measuring gas load in liquids, especially in liquid plastic materials |
-
2019
- 2019-03-23 CN CN201910258921.0A patent/CN110053211A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3433017A1 (en) * | 1984-09-07 | 1986-03-20 | Bayerische Motoren Werke AG, 8000 München | Device for measuring gas contents in liquids |
| US6393893B1 (en) * | 1997-07-11 | 2002-05-28 | Edf Polymer Applikation Maschinenfabrik Gmbh | Measuring device and method for measuring gas load in liquids, especially in liquid plastic materials |
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