CN102350737B - Ventilating device, powder measuring hopper and concrete mixing device - Google Patents
Ventilating device, powder measuring hopper and concrete mixing device Download PDFInfo
- Publication number
- CN102350737B CN102350737B CN201110315999.5A CN201110315999A CN102350737B CN 102350737 B CN102350737 B CN 102350737B CN 201110315999 A CN201110315999 A CN 201110315999A CN 102350737 B CN102350737 B CN 102350737B
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- China
- Prior art keywords
- gas permeable
- permeable devices
- bucket
- filter element
- sealing plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000843 powder Substances 0.000 title claims abstract description 52
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 229920004933 Terylene® Polymers 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 14
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 239000000428 dust Substances 0.000 description 15
- 238000005303 weighing Methods 0.000 description 9
- 230000035699 permeability Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002045 lasting effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920000784 Nomex Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000000867 larynx Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The invention provides a ventilating device which comprises a cylinder, wherein the cylinder comprises a body, a sealing plate and filtering elements; the body comprises a first opening end and a second opening end; the first opening end is connected to a hopper body of a powder measuring hopper; the sealing plate is arranged at the second opening end and used for isolating the body from the outside; a plurality of ventilating holes are formed on the sealing plate; and the filtering elements are arranged on the sealing plate at the ventilating holes. A plurality of filtering elements are arranged in the cylinder of the ventilating device, thereby filtering the powder in the hopper body, quickly releasing the pressure in the hopper body through the filtering elements, balancing a difference of pressures inside and outside the hopper body and improving the measuring precision.
Description
Technical field
The present invention relates to a kind of gas permeable devices, apply the powder metering bucket of this gas permeable devices and the concrete batch plant of applying this powder metering bucket.
Background technology
Along with the fast development of concrete mixing plant, client more and more pursues the quality of product, pursues more superior environmental-protecting performance simultaneously.Concrete mixing plant is normally worked while producing concrete, need to throw gather materials (sand, stone, water and powder etc.) in stirring host, now in stirring host, produce malleation, dust in stirring host has the trend of outwards overflowing, therefore need to carry out dedusting to stirring host, guarantee that the air pressure of main frame and powder metering bucket is in poised state, to guarantee the dynamic accuracy of powder metering simultaneously.As Fig. 1, shown in existing mixing plant, for the upper and lower draught head of balance powder metering bucket, the gas permeable devices 8 that conventionally can increase on the lid 9 at powder metering bucket top.Because gas permeable devices 8 has adopted a terylene cloth bag, utilize the gas permeability of polyester canvas, the inside and outside draught head of powder metering bucket closed cavity is kept within the specific limits.Conveying worm when carrying powder in powder metering bucket, produces a large amount of dust suspensions in powder metering bucket, produce malleation in weighing hopper cavity.But existing gas permeable devices is subject to the restriction (needing to install the equipment such as screw machine in powder metering bucket top blind flange) of installation dimension, terylene cloth bag size is less, general diameter is in 300mm left and right, malleation in weighing hopper cannot discharge at short notice, when the differential pressure of atmospheric pressure of cavity up and down in weighing hopper surpasses certain value, to affect the measuring accuracy of powder, cause powder metering inaccurate.
Provide a kind of and can discharge fast weighing hopper internal pressure, improve the powder metering bucket of powder metering precision gas permeable devices, apply the powder metering bucket of this gas permeable devices and the concrete batch plant of applying this powder metering bucket, become the problem of needing solution badly.
Summary of the invention
In order to overcome above-mentioned defect and the deficiency of prior art, the object of the present invention is to provide a kind of gas permeable devices, it comprises cylindrical shell, described cylindrical shell comprises body, sealing plate and filter element, described body comprises the first openend and the second openend, described the first openend is connected with the bucket body of powder metering bucket, described sealing plate is arranged at described the second openend so that described body is isolated from the outside, on described sealing plate, offer a plurality of passages, described filter element is arranged on the sealing plate at described passage place.
Preferably, described cylindrical shell also comprises support frame, and institute's support frame is placed in described body by described passage and is fixed on described sealing plate, and described filter element is sheathed and be fixed on described support frame.
Preferably, described support frame comprises base and is fixed on the support bar on described base, and described support bar is through described passage and be positioned in described body.
Preferably, gas permeable devices also comprises lid, and described lid is arranged at described the second openend, on described lid, offers exhaust outlet, on described lid, is fixed with vibrator.
Preferably, described body comprises tapered portion, and described tapered portion place arranges gusset.
Preferably, described cylindrical shell is by a duct coupling and described bucket body.
Preferably, described filter element is terylene cloth bag.
Preferably, described filter element is two or more, and independent setting each other, and when wherein part filter element stops up, other filter elements still can be realized filtration, ventilative effect.
Meanwhile, the invention provides a kind of concrete batch plant of applying the powder metering bucket of gas permeable devices as above and applying this powder metering bucket.
When concrete mixing plant is normally worked, need to throw various gathering materials (various gathering materials need to first complete metering) in main frame, when powder metering bucket starts to weigh, conveying worm starts to carry powder in weighing hopper, powder in powder metering bucket is accumulated on one side, weighs simultaneously.Carrying powder in weighing hopper when, dust in weighing hopper bucket body has the trend of outwards overflowing, be in weighing hopper, to have produced malleation (bucket body internal gas pressure is greater than atmospheric pressure), in powder metering bucket top cover, gas permeable devices is set, utilize the gas permeability (terylene cloth bag surface distributed has the hole of fine diameter) of terylene cloth bag in gas permeable devices, while producing malleation in weighing hopper, dusty gas passes from terylene cloth bag, and dust granules diameter is larger, cannot pass terylene cloth bag, be that dust is tackled by terylene cloth bag, part dust bonding is on cloth bag surface, utilize electrical system to control vibrator, vibrator vibration at regular intervals once, the dust that is bonded at cloth bag surface is shaken off.Thus, due to the effect of gas permeable devices, thereby guarantee that terylene cloth bag has lasting gas permeability, make the inside and outside pressure reduction of powder metering bucket in poised state, make powder metering accurate, meet the required precision of metering.
Separately, in cylindrical shell, be provided with a plurality of filter elements, dust in bucket body filtered and its internal pressure can discharge by a plurality of filter elements fast, so that the inside and outside pressure reduction of this bucket body of balance improves measuring accuracy; And filter element independently arranges each other, be independent of each other, when wherein part filter element stops up, other filter elements still can be realized filtration, ventilative effect.
Accompanying drawing explanation
It described in Fig. 1, is the partial structurtes schematic diagram of existing powder metering bucket.
Figure 2 shows that the structural representation of the powder metering bucket that preferred embodiment of the present invention provides.
Figure 3 shows that the structural representation of the gas permeable devices in powder metering bucket in Fig. 2.
Figure 4 shows that along the cutaway view of A-A direction in Fig. 3.
The specific embodiment
Below in conjunction with the Fig. 2 to Fig. 4 in preferred embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Refer to Fig. 2 and Fig. 3, the invention provides a kind of gas permeable devices, apply the powder metering bucket of this gas permeable devices and the concrete batch plant of applying this powder metering bucket.This gas permeable devices is connected with the bucket body 6 of powder metering bucket by a duct coupling 1.This gas permeable devices comprises connection cylindrical shell 4 and lid 5.
This duct coupling 1 one end is provided with connecting flange 2, and one end of this duct coupling 1 is connected with this cylindrical shell 4 by this connecting flange 2, and the other end of this duct coupling 1 is connected with this bucket body 6.Therefore, the cylindrical shell 4 of this gas permeable devices is removably connected on this bucket body 6, so that the maintenance of this cylindrical shell 4.
Incorporated by reference to consulting Fig. 4, this body 40 has the tubular structure of tapered portion 401 for one end, and this tapered portion 401 is connected with this duct coupling 1.In order to improve the intensity of this tapered portion 401, these tapered portion 401 places can arrange gusset 402.The other end of this body 40 is formed with the second openend, and sealing plate 41 is arranged at this second open end, so that interior formation one host cavity 403 of this body 40, this host cavity 403 is for splendid attire concrete powder.On sealing plate 41, offer a plurality of passages 410, described support frame 42 comprises base 420 and is fixed on a plurality of support bars 421 on this base 420.The support bar 421 of each support frame 42 passes corresponding passage 410 and is positioned in this host cavity 403, and this base 420 is bolted on the sealing plate 41 at described passage 410 places.Described filter element 43 be set in respectively on corresponding support frame 42 and by larynx hoop or other retaining element bandings on this support frame 42.This filter element 43 is terylene cloth bag, and it has gas permeability, and it can filter the powder in this cylindrical shell 4.Concrete, this powder grain diameter is between 10～500um, the surperficial minute aperture diameter of this filter element 43 is less than 10um, when conveying worm is during to the interior conveying powder of bucket body 6 of powder metering bucket, a large amount of dust suspension of the interior generation of this bucket body 6, the interior generation malleation of this bucket body 6, therefore, this bucket body 6 contains dusty gas and directly discharges from this filter element 43, so that the inside and outside pressure reduction of this bucket body 6 of balance improves measuring accuracy.
This lid 5 is bolted on the second open end of this body 40 so that described body 40 is isolated from the outside.On this lid 5, offer an exhaust outlet 51, this exhaust outlet 51 is for discharging the gas of discharging from this filter element 43.On the sidewall of this lid 5, be fixed with vibrator 52, it can be electric vibrator, pneumatic vibrator.Dust size in host cavity 403 is excessive and cannot be through this filter element 43 time, and part dust bonding is on this filter element 43 and cause the operating efficiency of this gas permeable devices to reduce.This vibrator 52 is shaken off by the dust on this filter element 43 by vibration, thereby makes this filter element 43 have lasting gas permeability.
In the cylindrical shell 4 of this gas permeable devices, be provided with a plurality of filter elements 43, dust in bucket body 6 filtered and its internal pressure can discharge by a plurality of filter elements 43 fast, so that the inside and outside pressure reduction of this bucket body 6 of balance improves measuring accuracy.In addition, when wherein part filter element 43 too much occurs to stop up due to dust, other filter element 43 still can be realized and filtering and ventilative effect.
This powder metering bucket comprises above-mentioned bucket body 6 and the gas permeable devices being connected with this bucket body 6.This concrete batch plant is applied above-mentioned powder metering bucket, to accelerate rate of release, the raising powder metering precision of bucket body 6 internal pressures.
Be appreciated that described support frame 42 can omit, correspondingly, this filter element 43 can be arranged net and the alternative above-mentioned terylene cloth bag of Nomex by terylene.This terylene is arranged net and can be fixed on each passage 410 place, with the dust in this host cavity 403, filters.
Be appreciated that this lid 5 can omit, the gas discharging from this cylindrical shell 4 directly drains into atmosphere.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a gas permeable devices, it is characterized in that: it comprises cylindrical shell (4) and lid (5), described cylindrical shell (4) comprises body (40), sealing plate (41) and filter element (43), described body (40) comprises the first openend and the second openend, described the first openend is connected with the bucket body (6) of powder metering bucket, described sealing plate (41) is arranged at described the second openend so that described body (40) is isolated from the outside, on described sealing plate (41), offer a plurality of passages (410), described filter element (43) is arranged on the sealing plate (41) that described passage (410) locates, described lid (5) is arranged at described the second openend, on described lid (5), offer exhaust outlet (51), on described lid (5), be fixed with vibrator (52).
2. gas permeable devices according to claim 1, it is characterized in that: described cylindrical shell (4) also comprises support frame (42), described support frame (42) is positioned in described body (40) by described passage (410) and to be fixed on described sealing plate (41) upper, and described filter element (43) is sheathed and be fixed on described support frame (42).
3. gas permeable devices according to claim 2, it is characterized in that: described support frame (42) comprises base (420) and be fixed on the support bar (421) on described base (420), described support bar (421) is through described passage (410) and be placed in described body (40).
4. gas permeable devices according to claim 1, is characterized in that: described body (40) comprises tapered portion (401), and described tapered portion (401) locates to arrange gusset (402).
5. gas permeable devices according to claim 1, is characterized in that: described cylindrical shell (4) is connected with described bucket body (6) by a duct coupling (1).
6. gas permeable devices according to claim 1, is characterized in that: described filter element (43) is terylene cloth bag.
7. gas permeable devices according to claim 1, it is characterized in that: described filter element (43) is more than two, and independent setting each other, when wherein part filter element (43) stops up, other filter elements (43) still can be realized filtration, ventilative effect.
8. a powder metering bucket, it comprises the bucket body (6) that gas permeable devices and described gas permeable devices connect, and it is characterized in that, described gas permeable devices is the gas permeable devices described in any one in claim 1-7.
9. a concrete batch plant, it comprises powder metering bucket, it is characterized in that, described powder metering bucket is the powder metering bucket described in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110315999.5A CN102350737B (en) | 2011-10-18 | 2011-10-18 | Ventilating device, powder measuring hopper and concrete mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110315999.5A CN102350737B (en) | 2011-10-18 | 2011-10-18 | Ventilating device, powder measuring hopper and concrete mixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102350737A CN102350737A (en) | 2012-02-15 |
| CN102350737B true CN102350737B (en) | 2014-04-16 |
Family
ID=45574437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110315999.5A Expired - Fee Related CN102350737B (en) | 2011-10-18 | 2011-10-18 | Ventilating device, powder measuring hopper and concrete mixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102350737B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4922463A (en) * | 1988-08-22 | 1990-05-01 | Del Zotto Manufacturing Co. | Portable volumetric concrete mixer/silo |
| CN201020331Y (en) * | 2007-02-26 | 2008-02-13 | 宝山钢铁股份有限公司 | Vacuum cooling filtering device |
| CN201325118Y (en) * | 2008-10-14 | 2009-10-14 | 三一重工股份有限公司 | Dust cover for concrete mixer |
| CN201410378Y (en) * | 2009-03-19 | 2010-02-24 | 三一重工股份有限公司 | Powdery material blending agitator |
| CN201745096U (en) * | 2010-06-17 | 2011-02-16 | 三一重工股份有限公司 | Admixture mixing system of concrete mixing plant |
-
2011
- 2011-10-18 CN CN201110315999.5A patent/CN102350737B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4922463A (en) * | 1988-08-22 | 1990-05-01 | Del Zotto Manufacturing Co. | Portable volumetric concrete mixer/silo |
| CN201020331Y (en) * | 2007-02-26 | 2008-02-13 | 宝山钢铁股份有限公司 | Vacuum cooling filtering device |
| CN201325118Y (en) * | 2008-10-14 | 2009-10-14 | 三一重工股份有限公司 | Dust cover for concrete mixer |
| CN201410378Y (en) * | 2009-03-19 | 2010-02-24 | 三一重工股份有限公司 | Powdery material blending agitator |
| CN201745096U (en) * | 2010-06-17 | 2011-02-16 | 三一重工股份有限公司 | Admixture mixing system of concrete mixing plant |
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| Publication number | Publication date |
|---|---|
| CN102350737A (en) | 2012-02-15 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20140416 |