CN109878915A - It is a kind of with change stream device hyperbola funnel - Google Patents
It is a kind of with change stream device hyperbola funnel Download PDFInfo
- Publication number
- CN109878915A CN109878915A CN201910326864.5A CN201910326864A CN109878915A CN 109878915 A CN109878915 A CN 109878915A CN 201910326864 A CN201910326864 A CN 201910326864A CN 109878915 A CN109878915 A CN 109878915A
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- China
- Prior art keywords
- funnel
- stream device
- hyperbola
- bin stock
- change
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- 238000007599 discharging Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 2
- 239000011150 reinforced concrete Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 16
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
It is a kind of with the hyperbola funnel for changing stream device, mainly include funnel and changing fluid two parts；Wherein funnel uses Curve Design, i.e. any two adjacent sections ratio of funnel is constant, and funnel angle ensure that the unimpeded of funnel discharging closer to discharge port；Change stream device and be designed to hollow bottomless trigone figure modelling, part bin stock can be undertaken to the impact force of funnel and discharge port, improve the porosity between bin stock, reduces contact and the generation of contact force between particle.The defects of curved funnels and the combination for changing stream device can optimize bin stock blocking, Stock Bridging, excessive dynamic pressure, so that vertical silo construction increment.
Description
Technical field
The invention mainly relates to the designs of the discharge funnel of vertical silo, primarily directed to vertical silo orlop center discharging operating condition
Under, it avoids bin stock from blocking in funnel, tie arch, reduce warehouse caused by discharging under the operating condition and destroy risk.
Background technique
The eighties in last century, with the rapid development of science and technology, the influence of the natural causes such as yield climate of grain are more next
Fewer, China's grain yield sustainable growth, existing storage grain facility has been unable to meet demand, is badly in need of construction a batch modernization grain
Storehouse.Under such overall situation, the factors such as resource, the various regions natural environment in China are comprehensively considered, having gradually formed chamber storehouse is
Storage grain network main, supplemented by vertical silo.
Vertical silo has the series of advantages such as land occupation resource is few, mechanization degree is high, guarantor's grain effect is good.But its disadvantage also ten
Clearly demarcated aobvious, vertical silo ratio of height to diameter is larger, and when discharging is easy blocking, knot arch, to cause dynamic pressure excessive, causes silo broken
It is bad.To the knot arch and dynamic overpressure for how solving the problems, such as vertical silo, mainly installation changes fluid in the silo in previous research,
The installation for changing fluid can change the fluidised form of bin stock to a certain extent, and knot is avoided to encircle, and reduce dynamic pressure.But change the peace of fluid
Dress fixation is more troublesome, and the small-sized fluid broken arch ability that changes designed in the past is limited, and to mitigating, dynamic pressure effect is very limited,
It is more easily damaged.Large size changes that fluid is difficult to install, and cost is higher.Stock Bridging is avoided to pay close attention to improvement this body structure of silo at present
It is also fewer.
Summary of the invention
It is easy blocking, knot arch when in order to overcome the center discharging of vertical silo orlop, changes that fluid installation is fixed difficult, it is broken to change fluid
Encircle it is inefficient, change the defects such as fluid cost performance is low, the present invention provides a kind of with the hyperbola funnel for changing stream device.This curved shape
Funnel can avoid bin stock blocking, and bin stock can be made continuously to flow to discharge port, to reduce the probability for finishing arch.Simultaneously should
For funnel with simply stream device is changed, which can change bin stock fluidised form to a certain extent, share headwall pressure, improve bin stock
Porosity has the function that broken arch.
The technical solution used to solve the technical problems of the present invention is that: it is a kind of with the hyperbola funnel for changing stream device, it is main
By funnel and to change fluid two parts and constitute；Funnel is designed using hyperbola, and hyperbola funnel is that a kind of adjacent sections ratio is permanent
It is fixed, and funnel angle is bigger closer to discharge port, this ensure that discharging area of section is constantly reducing, inclination angle is increasingly
Greatly, Flow of Goods and Materials speed is more and more big, and ensure that will not block when discharging；Change fluid to use similar to prism shapes, it is intermediate
It is hollow out and does not have bottom；Change stream device and be mounted on funnel middle and upper part, play broken arch, shunting and increases pellet porosity
Effect.
Above-mentioned to have the hyperbola funnel for changing stream device, angle and radius size at funnel different height are all by meter
Calculate determining, the radius x formula difference at funnel angle α and any height is as follows:
Wherein d0Funnel lower port diameter, mm
k1Form factor, this takes 1
Height under y- funnel at mouth to any height of funnel, mm
The ratio in two sections of C- arbitrary neighborhood
D- funnel back cut diameter, mm
Above-mentioned to have the hyperbola funnel for changing stream device, funnel material (more preferably can more accurately reach leakage using steel
The Curve Design requirement of bucket), or have special facture template that armored concrete can be used when meeting design requirement.
Above-mentioned has the hyperbola funnel for changing stream device, and changing stream device is a hollow bottomless prism shapes.
Length is identical as present position funnel inner diameter size, and to guarantee that it can mitigate bin stock to the pressure of funnel, performance changes stream and its breaks
The effect of arch.The device makes of steel, and convex surface is suitable for reading towards funnel, and fixed form is welding or pre-buried (funnel material is adopted
It is welded when with steel, is pre-buried when armored concrete).
The invention has the advantages that the invention, which uses the design of hyperbola funnel, installs the method for changing fluid additional, increase vertical
The mobility of bin stock when silo discharging, changes the flow pattern of bin stock.Installed additional in funnel change stream device can share to a certain extent
Bin stock increases the porosity between bin stock, reduces bin stock arching probability to the pressure of funnel.The invention is vertical by slightly changing
Silo funnel moulding, and structure is added in funnel and simply changes stream device, dynamic pressure when vertical silo discharging is reduced, effectively
Ground eliminates that vertical silo unloading pressure is big, is easily destroyed, and installation is small-sized in the storehouse in changes that fluid action is micro-, is easily destroyed, and large size changes stream
The defects such as body installation is complicated, cost performance is low.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples
Fig. 1 is sectional view of the present invention；
Fig. 2 is top view of the present invention；
Fig. 3 is to change stream device in funnel；
1. funnel curved wall in attached drawing, 2. change fluid, mouth under 3. funnels, and 4. funnels are suitable for reading.
Specific embodiment
[embodiment 1]
When vertical silo discharging, the bin stock close to mouth 3 under funnel flows out warehouse under the action of self-weight first, with bin stock
The bin stock of outflow, funnel place suitable for reading and bowl wall portion starts to flow to discharge port 3, and density biggish bin stock in top is by changing fluid
3 shunting reduces the compactness of bin stock, increases the porosity between particle, flows out warehouse by funnel curved wall 1.The funnel
Using Curve Design, adjacent section ratio is constant two-by-two, and its funnel curved wall 1 of mouth 3 inclines under funnel
Angle is bigger, although cross section is reducing, due to the increase of funnel angle, there is no increasing, this is just protected the resistance that bin stock is subject to
The flow velocity for having demonstrate,proved bin stock is not in the phenomenon that particle hangs storehouse.Change 2 configuration design of fluid at angle iron form, in top bin stock
When flowing to funnel, can bearing part bin stock impact force, change bin stock flow pattern, improve discharge port nearby bin stock porosity,
Reduce the contact force between particle.The invention can improve the porosity between bin stock, share bin stock by guaranteeing bin stock flow velocity
To the impact force of discharge port, the defects of so as to optimize bin stock blocking, Stock Bridging, excessive dynamic pressure, so that vertical silo
Construction increment.
Claims (3)
1. it is a kind of with the hyperbola funnel for changing stream device, including hyperbola funnel (1), hyperbola funnel are a kind of adjacent sections
Ratio invariableness, headwall have the funnel of certain angle, and its inclination angle is bigger closer to its discharge port, change stream device (2), change stream dress
The shape set is similar to the intermediate triangular prism hollowed out, and the upper lower section of hyperbola funnel is circle.
2. hyperbola funnel (1) as described in claim 1, which is characterized in that headwall is according to upper silo diameter and discharging
Mouth diameter is by calculating the diameter and the inclination angle that determine at different cross section, and angle is bigger closer to discharge port, which adopts
Reinforced Concrete Materials also can be used when with steel or smaller template error.
3. changing stream device (2) as described in claim 1, which is characterized in that change stream device materials using steel, shape is similar to
It hollows out middle part and the triangular prism without bottom surface, the device moulding can be simply placed directly in funnel, have and share stored material pressure and change
The effect of variable flow state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910326864.5A CN109878915A (en) | 2019-04-23 | 2019-04-23 | It is a kind of with change stream device hyperbola funnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910326864.5A CN109878915A (en) | 2019-04-23 | 2019-04-23 | It is a kind of with change stream device hyperbola funnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109878915A true CN109878915A (en) | 2019-06-14 |
Family
ID=66938113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910326864.5A Withdrawn CN109878915A (en) | 2019-04-23 | 2019-04-23 | It is a kind of with change stream device hyperbola funnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109878915A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479144A (en) * | 2020-12-21 | 2021-03-12 | 浙江大学 | Normal curved surface funnel |
| CN113005983A (en) * | 2021-02-01 | 2021-06-22 | 浙江大学 | Sand discharging device for normal curved surface funnel reservoir |
-
2019
- 2019-04-23 CN CN201910326864.5A patent/CN109878915A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479144A (en) * | 2020-12-21 | 2021-03-12 | 浙江大学 | Normal curved surface funnel |
| US11542141B2 (en) | 2020-12-21 | 2023-01-03 | Zhejiang University | Funnel based on bivariate normal distribution |
| CN113005983A (en) * | 2021-02-01 | 2021-06-22 | 浙江大学 | Sand discharging device for normal curved surface funnel reservoir |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190614 |