CN111300655A - Method for accelerating dehydration of sand material in double-pressure circulating sand silo - Google Patents
Method for accelerating dehydration of sand material in double-pressure circulating sand silo Download PDFInfo
- Publication number
- CN111300655A CN111300655A CN202010112920.8A CN202010112920A CN111300655A CN 111300655 A CN111300655 A CN 111300655A CN 202010112920 A CN202010112920 A CN 202010112920A CN 111300655 A CN111300655 A CN 111300655A
- Authority
- CN
- China
- Prior art keywords
- sand
- dehydration
- pipe
- double
- silo
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
- B28C7/0076—Parts or details thereof, e.g. opening, closing or unloading means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/12—Drying solid materials or objects by processes not involving the application of heat by suction
Abstract
The invention discloses a method for accelerating dehydration of sand materials in a double-pressure circulating sand silo, which comprises the following steps: installing a sand material accelerated dehydration structure of the double-pressure circulating sand silo, wherein the sand material accelerated dehydration structure comprises a steel perforated pipe, a branch pipe and a main pipe which are sequentially connected, and the main pipe is respectively connected with an air supply system and a water pumping system; opening a water pump, closing an air compressor, and pumping and discharging water infiltrated into the steel perforated pipe under the negative pressure of the water pump; opening an air compressor, closing a water suction pump, and conveying external air to the position of the steel perforated pipe through a main pipe so as to open a water-permeable channel inside the sand; and circulating the two steps to realize the accelerated dehydration of the sand material in the double-pressure circulating sand silo. The invention has convenient operation and effectively controls the water content of the sand material of the sand silo within the specified range.
Description
Technical Field
The invention relates to the field of sandstone aggregate treatment, in particular to a method for accelerating dehydration of sand materials in a double-pressure circulating sand silo.
Background
The large engineering sandstone aggregate has large dosage, and the coarse aggregate is easy to dehydrate. Due to the influence of the properties of the original rock, partial sand materials are difficult to dehydrate and cannot meet the control standard of less than 6 percent. Free water exists in sand materials, the difficulty of concrete mixing quality control is influenced, the concrete mixture workability and strength fluctuation are large, when the temperature-controlled concrete is mixed, ice cannot be added in a sufficient amount, the temperature of the concrete mixture at the outlet of a machine cannot meet the design requirement, the temperature of the poured concrete rises, and the concrete has the risk of cracks. For example, the sand material of a dam has difficulty in dehydration, and 4.6 ten thousand meters is additionally arranged to solve the problem of difficulty in dehydration of the sand material3Sand silo, invest in great fund.
Disclosure of Invention
The invention aims to solve the technical problem of providing the method for accelerating the dehydration of the sand material in the double-pressure circulating sand silo, which has simple structure and convenient operation and effectively controls the water content of the sand material in the sand silo within a specified range.
In order to solve the technical problems, the invention adopts the technical scheme that: a method for accelerating dehydration of sand materials in a double-pressure circulating sand silo comprises the following steps:
firstly, two pressure circulation sand silo sand material dehydration structures with higher speed of installation, two pressure circulation sand silo sand material dehydration structures with higher speed specifically do: a plurality of vertical steel perforated pipes are distributed in the sand silo, the outer side of each steel perforated pipe is wrapped with a layer of geotextile and is connected with a branch pipe, and all the branch pipes are connected to the same main pipe; one branch of the main pipe is connected to the air compressor, the other branch of the main pipe is connected to the water suction pump, and the rear end of the water suction pump is connected with a water drainage pipe; gate valves are arranged on the two branches of the main pipe and each branch pipe;
secondly, opening the water pump and a corresponding gate valve thereof, and opening the gate valve corresponding to the steel perforated pipe when closing the air compressor and the corresponding gate valve thereof, so as to pump and discharge the water permeating into the steel perforated pipe under the negative pressure of the water pump;
thirdly, opening the air compressor and a corresponding gate valve thereof, closing the water pump and a corresponding gate valve thereof, opening the gate valve corresponding to the steel perforated pipe, and conveying external air to the position of the steel perforated pipe through the main pipe so as to open a water-permeable channel inside the sand material;
fourthly, circulating the two steps to realize the accelerated dehydration of the sand material in the double-pressure circulating sand silo.
Further, two pressure circulation sand silo sand material are arranged in among the canopy with higher speed dehydration structure, the canopy mainly is the steel construction of compriseing canopy stand and canopy roof, and wherein, canopy stand bottom is the concrete expansion basis.
Furthermore, the rain shed upright posts are wrapped with concrete.
Furthermore, a square steel plate is welded at the bottom of the steel perforated pipe, and expansion bolts are driven around the square steel plate to fix the steel perforated pipe on a canopy terrace.
Further, in the third step and the fourth step, the gate valves on one or more branch pipes are selected to be opened according to actual requirements.
Furthermore, grooving is carried out on the rainshed terrace, and the branch pipes are embedded into the grooving.
Compared with the prior art, the invention has the beneficial effects that: effectively control the moisture content of sand silo sand material in the within range of regulation, ensure that the quality of concrete mixture does not receive the influence of sand material moisture content, guaranteed the quality of concrete mixture and concreting.
Drawings
FIG. 1 is a top view of a dewatering structure in the method for accelerating dewatering of sand in a double-pressure circulating sand silo.
FIG. 2 is a sectional view (A-A section) of a dewatering structure in the method for accelerating dewatering of sand in the double-pressure circulating sand silo.
In the figure: in the figure: a steel flower tube 1; a branch pipe 2; 3, concrete; a canopy upright post 4; a main pipe 5; a gate valve 6; an air compressor 7; a water pump 8; a drain pipe 9; a canopy terrace 10; a concrete enlarged foundation 11; a canopy roof 12.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
When the sand material in the sand silo is difficult to dehydrate and cannot reach below 6% within the specified time, the quality control of concrete mixture is directly influenced, and simultaneously, when the temperature-controlled concrete is stirred, ice does not meet the requirement.
As shown in figures 1 and 2, the rapid sand dewatering structure adopted in the invention comprises
The steel perforated pipe 1,
A branch pipe 2,
The main pipe 5, the gate valve 6, the air compressor 7, the water pump 8, the water discharge pipe 9 and the like, and the main pipe 5 and the branch pipe 2 can adopt hoses. All adopt expansion bolts to fix between steel floral tube 1 and the canopy terrace 10, one deck geotechnological cloth is wrapped up in the 1 outside of vertical steel floral tube, and during moisture in the sand of being convenient for sees through geotechnological cloth infiltration steel floral tube 1, the bottom and the branch pipe 2 of steel floral tube 1 were connected, and branch pipe 2 links to each other with being responsible for 5 again, is responsible for 5 one side and connects air compressor machine 7 and suction pump 8 respectively, constitutes air supply/pumping system respectively. The connecting part of the branch pipe 2 and the main pipe 5 and the positions of the air compressor 7 and the water pump 8 are provided with gate valves 6. When the water suction pump 8 and the corresponding gate valve 6 are opened and the gate valve 6 at the air compressor 7 is closed, water permeating into the steel perforated pipe 1 can be pumped and discharged under the negative pressure of the water suction pump; when the air compressor 7 and the corresponding gate valve 6 are opened and the water pump 8 and the corresponding gate valve 6 are closed, external air can be positively conveyed to the corresponding point position of the steel perforated pipe 1 through the main pipe 5, so that the internal water-permeable channel of the sand material is opened, and bidirectional circulation is realized through the two waysThe purpose of quick dehydration of sand material is accelerated to the ring, and the gate valve 6 on one or more branch pipes 2 can be selected to open according to actual demand on the scene, realizes single-point or large tracts of land pertinence quick precipitation.
In the invention, the sizes of the steel perforated pipes 1 and the hoses (comprising the branch pipes 2 and the main pipes 5) can be adjusted according to the actual dehydration requirement, and the spacing arrangement of the steel perforated pipes 1 can also be adjusted according to the quantity of the sand preparation. The arrangement distance between the steel perforated pipes 1 cannot influence the normal use of the loading equipment. The arrangement height of the vertical steel perforated pipe 1 is 2/3 of the sand material pile height at the corresponding position. In order to prevent the branch pipes 2 from being rolled and damaged by the loading equipment and the transport vehicle, the grooves are required to be engraved on the canopy terrace 10, and the branch pipes 2 are embedded into the grooves. The fresh sand material is dehydrated with higher speed and can open the gate valve 6 on the multi-channel branch pipe 2 at the same time, and the gate valve 6 corresponding to the nearest pipeline can be opened and other pipeline gate valves 6 can be closed when the single high water-containing part is dehydrated.
In order to better implement the invention, the invention also makes some optimization, including:
1) the steel perforated pipe 1 is vertically fixed on the rain shed terrace 10, in order to ensure firm connection, a square steel plate with the thickness of about 4mm can be welded at the bottom of the steel perforated pipe 1, and expansion bolts are driven into the periphery of the square steel plate for fixing;
2) drainage stopping measures on the periphery of the canopy are required to be taken, so that sand materials are prevented from being corroded by external rainwater, and secondary difficulty is brought to quick dehydration;
3) the geotextile and the steel perforated pipe 1 are tightly wrapped to prevent sand from entering the steel perforated pipe 1 and blocking the lower branch pipe 2;
4) the air compressor 7 and the water pump 8 can not be opened simultaneously for use;
5) the canopy is mainly the steel construction of constituteing by canopy stand 4 and canopy roof 12, and wherein, canopy stand 4 bottom is concrete enlarged basis 11.
The concrete application proves that the method of the invention has the concrete peak monthly pouring strength (about 15 ten thousand meters) in all concrete aggregate processing tasks of concrete and concrete spraying finished aggregate production in a certain hydropower station3Monthly), wherein the production capacity of the finished sand is 500t/h, the demand of the concrete is large, and the quality requirement is highHowever, due to the influence of the properties of the original rock, partial sand is difficult to dehydrate, and the dehydration time is a main factor for limiting the supply strength of the concrete. The existing sand and stone material dehydration method mainly aims at preventing external rainwater and large-area overturning and airing, has the problems of long time consumption, large occupied area, high resource investment and the like, and consumes a large amount of material resources and financial resources. In view of the above situation, the method for the accelerated dehydration of the sand material in the double-pressure circulating sand silo accelerates the rapid dehydration of the sand material, and provides reference significance for the rapid dehydration of the sand material in subsequent similar projects.
Claims (6)
1. A method for accelerating dehydration of sand materials in a double-pressure circulating sand silo is characterized by comprising the following steps:
firstly, two pressure circulation sand silo sand material dehydration structures with higher speed of installation, two pressure circulation sand silo sand material dehydration structures with higher speed specifically do: a plurality of vertical steel perforated pipes (1) are distributed in the sand silo, the outer side of each steel perforated pipe (1) is wrapped with a layer of geotextile and is connected with a branch pipe (2), and all the branch pipes (2) are connected to the same main pipe (5); one branch of the main pipe (5) is connected to the air compressor (7), the other branch of the main pipe is connected to the water suction pump (8), and the rear end of the water suction pump (8) is connected with a water drainage pipe (9); a gate valve (6) is arranged on each branch pipe (2) and on the two branches of the main pipe (5);
secondly, opening the water suction pump (8) and a corresponding gate valve (6) of the water suction pump, and opening the gate valve (6) corresponding to the steel perforated pipe (1) when closing the air compressor (7) and the corresponding gate valve (6), so that water permeating into the steel perforated pipe (1) is pumped and discharged under the negative pressure of the water suction pump (8);
thirdly, opening an air compressor (7) and a corresponding gate valve (6), closing a water suction pump (8) and a corresponding gate valve (6), opening the gate valve (6) corresponding to the steel perforated pipe (1), conveying external air to the steel perforated pipe (1) through a main pipe (5), and further opening a sand material internal water permeable channel;
fourthly, circulating the two steps to realize the accelerated dehydration of the sand material in the double-pressure circulating sand silo.
2. The method for the accelerated dehydration of the sand material in the double-pressure circulating sand silo according to the claim 1, characterized in that the structure for the accelerated dehydration of the sand material in the double-pressure circulating sand silo is placed in a canopy, the canopy is mainly made of steel structure consisting of a canopy upright post (4) and a canopy top plate (12), and the bottom of the canopy upright post (4) is provided with a concrete enlarged foundation (11).
3. The method for the accelerated dehydration of sand material in a double pressure circulation sand silo according to the claim 2 is characterized in that the concrete (3) is wrapped outside the rain shed upright post (4).
4. The method for accelerating the dehydration of the sand material in the sand silo with the double pressure circulation as claimed in claim 3, is characterized in that a square steel plate is welded at the bottom of the steel perforated pipe (1), and the steel perforated pipe (1) is fixed on the rain shed floor (10) by driving expansion bolts around the square steel plate.
5. The method for the accelerated dehydration of the sand material in a dual pressure circulation sand silo according to the claim 1 is characterized in that in the third step and the fourth step, the gate valve (6) on one or more branch pipes (2) is selectively opened according to the actual requirement.
6. The method for the accelerated dehydration of the sand material in a double pressure circulation sand silo according to the claim 2 is characterized in that the rain shed terrace (10) is grooved, and the branch pipes (2) are embedded in the grooved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010112920.8A CN111300655A (en) | 2020-02-24 | 2020-02-24 | Method for accelerating dehydration of sand material in double-pressure circulating sand silo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010112920.8A CN111300655A (en) | 2020-02-24 | 2020-02-24 | Method for accelerating dehydration of sand material in double-pressure circulating sand silo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111300655A true CN111300655A (en) | 2020-06-19 |
Family
ID=71158337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010112920.8A Pending CN111300655A (en) | 2020-02-24 | 2020-02-24 | Method for accelerating dehydration of sand material in double-pressure circulating sand silo |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111300655A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2038714U (en) * | 1988-05-26 | 1989-06-07 | 刘向阳 | Adjustable temp. and humidity preservation device for granary |
| DE69705715D1 (en) * | 1996-04-18 | 2001-08-23 | Rutger Larsson Konsult Ab Klip | DRYING OF ATOMIZED METAL POWDERS |
| CN2858877Y (en) * | 2005-11-22 | 2007-01-17 | 王成友 | Assembling type multi-fanctional grain depot |
| CN201657644U (en) * | 2010-02-11 | 2010-12-01 | 刘廷瑜 | Multilayer ventilation drying granary |
| CN202722399U (en) * | 2012-03-30 | 2013-02-13 | 成都华粮仓储设备有限公司 | Grain drying emergency processing device |
| CN103628465A (en) * | 2013-11-15 | 2014-03-12 | 河海大学 | Device and method for circulating water discharging blocking prevention through exhausting and inflating sludge |
-
2020
- 2020-02-24 CN CN202010112920.8A patent/CN111300655A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2038714U (en) * | 1988-05-26 | 1989-06-07 | 刘向阳 | Adjustable temp. and humidity preservation device for granary |
| DE69705715D1 (en) * | 1996-04-18 | 2001-08-23 | Rutger Larsson Konsult Ab Klip | DRYING OF ATOMIZED METAL POWDERS |
| CN2858877Y (en) * | 2005-11-22 | 2007-01-17 | 王成友 | Assembling type multi-fanctional grain depot |
| CN201657644U (en) * | 2010-02-11 | 2010-12-01 | 刘廷瑜 | Multilayer ventilation drying granary |
| CN202722399U (en) * | 2012-03-30 | 2013-02-13 | 成都华粮仓储设备有限公司 | Grain drying emergency processing device |
| CN103628465A (en) * | 2013-11-15 | 2014-03-12 | 河海大学 | Device and method for circulating water discharging blocking prevention through exhausting and inflating sludge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109898535B (en) | Prefabricated pipe jacking working well prestress open caisson and assembling method | |
| CN210406497U (en) | Afforestation rainwater retaining irrigation equipment | |
| CN109208575B (en) | Method for reinforcing high-water-content blow-filled soft soil by combining medicament and horizontal vacuum | |
| CN103031835A (en) | Method for increasing foundation bearing capacity | |
| CN103696481A (en) | Rainwater regulating, storing and recycling system | |
| CN111300655A (en) | Method for accelerating dehydration of sand material in double-pressure circulating sand silo | |
| CN203782850U (en) | Rainwater regulation, storage and reuse system | |
| CN105822068A (en) | Ultra-long thin wall concrete wall pouring and maintenance method under high temperature environment | |
| CN208251141U (en) | A kind of cold box foundation structure using expanded-sand concrete prefabricated board | |
| CN115749137A (en) | Construction method of square sleeve round steel pipe stiff concrete column | |
| CN201362915Y (en) | Siphonic rain hopper of concrete roof | |
| CN111364466B (en) | Construction method of dry dock bottom plate | |
| CN211921207U (en) | Assembled revetment type constructed wetland system | |
| CN209324391U (en) | A kind of bolt grouting bracing means | |
| CN107471417A (en) | Fixed hidden precast beam fully-automatic sprinkling maintenance construction engineering method | |
| CN210263097U (en) | Basement outer wall waterproof construction | |
| CN208137074U (en) | A kind of construction landscape rainwater recycle utilizes system | |
| CN215319653U (en) | Discharging opening drainage device for aggregate scale of mixing station | |
| CN207919724U (en) | A kind of prefabricated assembled rainwater storage tank | |
| CN111979983A (en) | Sand geological water retaining dam solidified by using construction waste | |
| CN218581026U (en) | Seepage-proofing drainage collection structure | |
| CN213774665U (en) | Quick-building pumping irrigation station | |
| CN214187733U (en) | Cement product watering curing means | |
| CN217104925U (en) | Water conservancy ecological safety bank protection | |
| CN214245858U (en) | Anti-floating drainage structure for underground structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200619 |
|
| RJ01 | Rejection of invention patent application after publication |