CN102350737A - Ventilating device, powder measuring hopper and concrete mixing device - Google Patents
Ventilating device, powder measuring hopper and concrete mixing device Download PDFInfo
- Publication number
- CN102350737A CN102350737A CN2011103159995A CN201110315999A CN102350737A CN 102350737 A CN102350737 A CN 102350737A CN 2011103159995 A CN2011103159995 A CN 2011103159995A CN 201110315999 A CN201110315999 A CN 201110315999A CN 102350737 A CN102350737 A CN 102350737A
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- gas permeable
- permeable devices
- weighing hopper
- filter element
- sealing plate
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- 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, use the powder weighing hopper of this gas permeable devices and the concrete batch plant of using this powder weighing hopper.
Background technology
Along with the fast development of concrete mixing plant, customer more and more is pursued the quality of product, pursues more superior environmental-protecting performance simultaneously.When the concrete mixing plant operate as normal is produced concrete; Need in stirring host, to throw gather materials (sand, stone, water and powder etc.); Produce malleation in the stirring host this moment; Dust in the stirring host has the trend of outwards overflowing; Therefore need carry out dedusting to stirring host; The air pressure that guarantees main frame and powder weighing hopper simultaneously is in poised state, so that guarantee the dynamic accuracy of powder metering.Like Fig. 1, shown in existing mixing plant, for balance powder weighing hopper up and down draught head, the gas permeable devices 8 that can on the lid 9 at powder weighing hopper top, increase usually.Because gas permeable devices 8 has adopted a terylene cloth bag, utilizes the gas permeability of polyester canvas, the inside and outside draught head of powder weighing hopper closed cavity is kept within the specific limits.When conveying worm is carried powder in the powder weighing hopper, produce a large amount of dust suspensions in the powder weighing hopper, produce malleation in the weighing hopper cavity.But existing gas permeable devices is subjected to the restriction (needing to install equipment such as screw machine on the powder weighing hopper top blind flange) of installation dimension; Terylene cloth bag size is less; General diameter is about 300mm; Malleation in the weighing hopper can't discharge at short notice; When the differential pressure of atmospheric pressure of cavity up and down in the weighing hopper surpasses certain value; To influence the measuring accuracy of powder, cause the powder metering inaccurate.
Provide a kind of and can discharge the weighing hopper internal pressure fast, improve the powder weighing hopper of powder measuring accuracy gas permeable devices, use the powder weighing hopper of this gas permeable devices and the concrete batch plant of using this powder weighing hopper, become the problem of needing solution badly.
Summary of the invention
In order to overcome the above-mentioned defective 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; Said cylindrical shell comprises body, sealing plate and filter element; Said body comprises first openend and second openend; Said first openend is connected with the bucket body of powder weighing hopper; Said sealing plate is arranged at said second openend so that said body is isolated from the outside; Offer a plurality of passages on the said sealing plate, said filter element is arranged on the sealing plate at said passage place.
Preferably, said cylindrical shell also comprises support frame, and institute's support frame is placed in the said body through said passage and is fixed on the said sealing plate, and said filter element is sheathed and be fixed on the said support frame.
Preferably, said support frame comprises base and is fixed on the support bar on the said base that said support bar passes said passage and is positioned in the said body.
Preferably, gas permeable devices also comprises lid, and said lid is arranged at said second openend, offers exhaust outlet on the said lid, is fixed with vibrator on the said lid.
Preferably, said body comprises tapered portion, and said tapered portion place is provided with gusset.
Preferably, said cylindrical shell is through a duct coupling and said bucket body.
Preferably, said filter element is the terylene cloth bag.
Preferably, said filter element is two or more, and independent each other the setting, and when wherein the part filter element stopped up, other filter elements still can realize filtering, ventilative effect.
Simultaneously, the present invention provides a kind of concrete batch plant of using the powder weighing hopper of aforesaid gas permeable devices and using this powder weighing hopper.
During the concrete mixing plant operate as normal; Need in main frame, to throw various gathering materials (the various needs that gather materials are accomplished metering earlier), when the powder weighing hopper began weighing, conveying worm began in weighing hopper, to carry powder; Powder in the powder weighing hopper is accumulated on one side, carries out weighing simultaneously.When in weighing hopper, carrying powder; Dust in the weighing hopper bucket body has the trend of outwards overflowing; Be to have produced malleation (the bucket body internal gas pressure is greater than atmospheric pressure) in the weighing hopper; In powder weighing hopper 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 the gas permeable devices; When producing malleation in the weighing hopper; Dusty gas passes from the terylene cloth bag; And the dust granules diameter is bigger; Can't pass the terylene cloth bag; Be that dust is tackled by the terylene cloth bag; The part dust bonding is on the cloth bag surface; Utilize electrical system control vibrator, vibrator vibration at regular intervals once shakes off with the dust that is bonded at the cloth bag surface.Thus, because the effect of gas permeable devices, thereby guarantee that the terylene cloth bag has lasting gas permeability, make the inside and outside pressure reduction of powder weighing hopper be in poised state, make the powder accurate measurement, satisfy the required precision of metering.
In addition, in cylindrical shell, be provided with a plurality of filter elements, make dust in the bucket body be able to filter and its internal pressure can discharge through 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 is provided with each other, is independent of each other, and when wherein the part filter element stopped up, other filter elements still can realize filtering, ventilative effect.
Description of drawings
Fig. 1 is said to be the partial structurtes sketch map of existing powder weighing hopper.
The structural representation of the powder weighing hopper that provides for preferred embodiment of the present invention shown in Figure 2.
Shown in Figure 3 is the structural representation of the gas permeable devices in the powder weighing hopper among Fig. 2.
Shown in Figure 4 is cutaway view along A-A direction among Fig. 3.
The specific embodiment
To combine the Fig. 2 to Fig. 4 in the preferred embodiment of the present invention below, the technical scheme in the embodiment of the invention will be carried out clear, intactly description.
See also Fig. 2 and Fig. 3, the present invention provides a kind of gas permeable devices, uses the powder weighing hopper of this gas permeable devices and the concrete batch plant of using this powder weighing hopper.This gas permeable devices is connected with the bucket body 6 of powder weighing hopper through a duct coupling 1.This gas permeable devices comprises connection cylindrical shell 4 and lid 5.
These duct coupling 1 one ends are provided with connecting flange 2, and an end of this duct coupling 1 is connected with this cylindrical shell 4 through 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 removably is connected on this bucket body 6, so that the maintenance of this cylindrical shell 4.
Cylindrical shell 4 has been formed the main body of gas permeable devices, and this cylindrical shell 4 comprises body 40, sealing plate 41, support frame 42 and filter element 43.
Please combine to consult Fig. 4, this body 40 is the tubular structure that an end has tapered portion 401, 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 be provided with gusset 402.The other end of this body 40 is formed with second openend, and sealing plate 41 is arranged at this second open end, so that form a host cavity 403 in this body 40, this host cavity 403 is used for the splendid attire concrete powder.Offer a plurality of passages 410 on the sealing plate 41, said 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 through on the sealing plate 41 at the said passage of bolt 410 places.Said filter element 43 is set in respectively and also passes through larynx hoop or other retaining element bandings on the corresponding support frame 42 on this support frame 42.This filter element 43 is the 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; These filter element 43 surperficial minute aperture diameters are less than 10um; When conveying worm is carried powder in the bucket body 6 of powder weighing hopper, produce a large amount of dust suspensions in this bucket body 6, produce malleation in this bucket body 6; Therefore; This bucket body 6 contains dusty gas and directly discharges from this filter element 43, so that these bucket body 6 inside and outside pressure reduction of balance improve measuring accuracy.
Second open end of this lid 5 through being bolted to this body 40 is to be isolated from the outside said body 40.Offer an exhaust outlet 51 on this lid 5, this exhaust outlet 51 is used to discharge the gas of discharging from this filter element 43.Be fixed with vibrator 52 on the sidewall of this lid 5, it can be an electric vibrator, pneumatic vibrator.Excessive and can't pass this filter element 43 time when the dust size in the host cavity 403, the 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 with the dust on this filter element 43 through vibration, thereby makes this filter element 43 have lasting gas permeability.
Be provided with a plurality of filter elements 43 in the cylindrical shell 4 of this gas permeable devices, make dust in the bucket body 6 be able to filter and its internal pressure can discharge through a plurality of filter elements 43 fast, so that these bucket body 6 inside and outside pressure reduction of balance improve measuring accuracy.In addition, when wherein part filter element 43 too much took place to stop up owing to dust, other filter element 43 still can be realized filtering and ventilative effect.
This powder weighing hopper comprises above-mentioned bucket body 6 and the gas permeable devices that is connected with this bucket body 6.This concrete batch plant is used above-mentioned powder weighing hopper, with rate of release, the raising powder measuring accuracy of accelerating bucket body 6 internal pressures.
Be appreciated that said support frame 42 can omit, correspondingly, this filter element 43 can be arranged net and the alternative above-mentioned terylene cloth bag of Nomex through terylene.This terylene is arranged net and can be fixed on each passage 410 place, so that the dust in this host cavity 403 is filtered.
Be appreciated that this lid 5 can omit, the gas that discharges from this cylindrical shell 4 directly drains into the atmosphere.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. gas permeable devices; It is characterized in that: it comprises cylindrical shell (4); Said cylindrical shell (4) comprises body (40), sealing plate (41) and filter element (43); Said body (40) comprises first openend and second openend; Said first openend is connected with the bucket body (6) of powder weighing hopper; Said sealing plate (41) is arranged at said second openend so that said body (40) is isolated from the outside; Offer a plurality of passages (410) on the said sealing plate (41), said filter element (43) is arranged on the sealing plate (41) that said passage (410) locates.
2. gas permeable devices according to claim 1; It is characterized in that: said cylindrical shell (4) also comprises support frame (42); Said support frame (42) is positioned in the said body (40) through said passage (410) and is fixed on the said sealing plate (41), and said filter element (43) is sheathed and be fixed on the said support frame (42).
3. gas permeable devices according to claim 2; It is characterized in that: said support frame (42) comprises base (420) and is fixed on the support bar (421) on the said base (420) that said support bar (421) passes said passage (410) and is placed in the said body (40).
4. according to each described gas permeable devices among the claim 1-3, it is characterized in that: also comprise lid (5), said lid (5) is arranged at said second openend, offers exhaust outlet (51) on the said lid (5), is fixed with vibrator (52) on the said lid (5).
5. gas permeable devices according to claim 4 is characterized in that: said body (40) comprises tapered portion (401), and said tapered portion (401) locates to be provided with gusset (402).
6. gas permeable devices according to claim 4 is characterized in that: said cylindrical shell (4) is connected with said bucket body (6) through a duct coupling (1).
7. gas permeable devices according to claim 4 is characterized in that: said filter element (43) is the terylene cloth bag.
8. gas permeable devices according to claim 1; It is characterized in that: said filter element (43) is two or more; And independent each other the setting, when wherein part filter element (43) stopped up, other filter elements (43) still can realize filtering, ventilative effect.
9. powder weighing hopper, it comprises the bucket body (6) that gas permeable devices and said gas permeable devices connect, and it is characterized in that said gas permeable devices is each described gas permeable devices among the claim 1-8.
10. concrete batch plant, it comprises the powder weighing hopper, it is characterized in that, said powder weighing hopper is the powder weighing hopper described in the claim 9.
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 true CN102350737A (en) | 2012-02-15 |
| CN102350737B CN102350737B (en) | 2014-04-16 |
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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 |
|---|---|
| CN102350737B (en) | 2014-04-16 |
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Granted publication date: 20140416 |