Ultra-high performance concrete sand silo with wet sand dehydration function

Abstract

The utility model discloses an ultra-high performance concrete sand silo with a wet sand dewatering function in the field of constructional engineering devices, the main body structure of the sand silo is built above a negative pressure drainage base, the negative pressure drainage base comprises a base upper plate, a middle geotechnical cloth layer and a base lower plate, the surfaces of the base upper plate and the base lower plate are provided with base drainage holes, and the base drainage holes are communicated with the geotechnical cloth layer. A ventilation drainage box is arranged on the lower side of the base lower plate, and a drainage valve and an exhaust fan exhausting air outwards are arranged on the side face of the ventilation drainage box. The heating and dewatering device is arranged in the sand silo body structure and comprises a lifting support, a water seepage pipe is arranged on the lower side of the lifting support, the upper end of the water seepage pipe is connected with a drainage groove, water seepage pipe drainage holes are formed in the surface of the water seepage pipe, and an electric heating rod is arranged in the water seepage pipe. And the drainage groove is connected outside the sand silo main body structure through a drainage pipe. During use, water at the bottom of the sand pile permeates into the drainage base to be drained under the action of negative pressure, water in the sand pile is drained by the heating water removal device, and the drainage is rapid and energy-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering devices, in particular to a concrete sand bin with a wet sand dehydration function. Background Art

[0002] Since construction sand has fine particles, it often contains a lot of water and is difficult to volatilize. Especially when the sand contains a lot of mud or is dredged sand from rivers, the water contained in it is even more difficult to remove. This leads to the widespread use of wet sand in commercial concrete production. Since the water content in the sand is not uniform, it brings great difficulties to the stable production of commercial concrete. How to efficiently dehydrate construction sand is of great significance to ensure the quality of commercial concrete.

[0003] The Chinese invention patent document with publication number CN114522462A and publication date 20240301 discloses a high-efficiency sand and gravel dewatering screen, including a frame and a screen box, wherein the screen box is tilted on the frame through four front and rear springs, a screen body is arranged at the bottom of the screen box, a vibration motor is arranged near the middle of the screen box, the screen box is composed of side panels arranged on both sides and a plurality of telescopic rods, the side panels on both sides are connected by telescopic rods, the springs are arranged at the side ends of the side panels, the rear ends of the side panels on both sides are connected with telescopic baffles, and the front ends of the side panels on both sides are connected with folding discharge plates; the screen body is a telescopic structure movably connected between the bottoms of the side panels on both sides, and the side panels on both sides are driven by a driving device to move in opposite directions along the frame; the invention has a simple structure and is easy to use and maintain, and can control the shrinkage of the screen of the screen plate assembly, thereby increasing the dewatering area of ​​the dewatering screen, which can greatly reduce the amount of funds invested in expanding production capacity; and can solve the problem of being unable to expand production due to insufficient space.

[0004] The Chinese invention patent with publication number CN110425844A and publication date 20191108 discloses a sand and gravel drying device for the construction field, including a casing and a hood, wherein the casing is rotatably connected to the hood, and the inner wall of the hood on one side away from the casing is fixedly connected with a motor, and the output shaft of the motor is fixedly connected with a driving blade, and the inner wall of the casing on one side away from the hood is provided with a fixing mechanism, and one end of the fixing mechanism is provided with a drum, and a driving ring is clamped on the side of the drum close to the hood, and a plurality of driven blades are fixedly connected to the inner side of the driving ring. It utilizes the airflow generated when the original hot air blower is running to drive the driven blades to generate a rotating force, thereby driving the drum to rotate, so that the sand and gravel inside the drum can roll when drying, and at the same time, because the inner wall of the drum is provided with a protrusion, the contact area between the sand and gravel and the air can be increased, thereby improving the drying efficiency of the sand and gravel.

[0005] The Chinese invention patent with publication number CN110887344A and publication date 20200317 discloses an energy-saving sand and gravel drying device for intelligent control modular sand and gravel sorting. The main shaft drives four storage boxes to rotate horizontally at the same time, so that the storage boxes can rotate at high speed, realizing the centrifugal processing of internal moisture, thereby quickly dehydrating and improving the drying effect.

[0006] The disadvantage of the prior art is that the dehydration effect of the wet sand is not good, which is mainly manifested in that the dehydration consumes a lot of energy and the dehydration speed is slow. Utility Model Content

[0007] The utility model aims to provide an ultra-high performance concrete sand bin with a wet sand dehydration function. When the wet sand is stored in the sand bin, it can be automatically dehydrated. The dehydration energy consumption is low and the dehydration speed is fast.

[0008] To achieve the above-mentioned purpose, the technical solution of the utility model is: an ultra-high performance concrete sand silo with wet sand dehydration function, including a negative pressure drainage base, a sand silo main structure, and a heating and dehydration device, wherein the sand silo main structure is built above the negative pressure drainage base, and the negative pressure drainage base includes a base upper plate, a middle geotextile layer and a base lower plate, base drainage holes are arranged on the surfaces of the base upper plate and the base lower plate, a ventilation drainage box is arranged on the lower side of the base lower plate, and a drainage valve and an exhaust fan for exhausting to the outside are arranged on the side of the ventilation drainage box; the heating and dehydration device is arranged inside the sand silo main structure, and the heating and dehydration device includes a lifting bracket, a seepage pipe is arranged on the lower side of the lifting bracket, the upper end of the seepage pipe is connected to the drainage trough, the surface of the seepage pipe is provided with a seepage pipe drainage hole, an electric heating rod is arranged in the seepage pipe, and the drainage trough is fixed on the lifting bracket, and the drainage trough is connected to the outside of the sand silo main structure through the drainage pipe.

[0009] When the device is working, the wet sand is stored in the main structure of the sand bin, and it has three drainage methods. First, the water in the sand and gravel enters the ventilation and drainage box through the upper plate of the base, the geotextile layer and the lower plate of the base, and the water accumulated in the ventilation and drainage box is discharged through the drain valve; second, after being drained through the drain valve, air can be drawn out by an exhaust fan to form a negative pressure, and part of the water in the sand enters the ventilation and drainage box under the influence of the negative pressure. At the same time, the air can be further discharged by the exhaust; third, the seepage pipe is inserted into the sand and gravel through the lifting device, and the electric heating rod is used for heating and dehydration. The water in the sand and gravel is vaporized inside the seepage pipe, and after reaching the drainage trough, it is cooled and liquefied, and then flows out through the drainage pipe.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. Rapid dehydration of wet sand can be achieved by utilizing the combined effects of infiltration drainage, negative pressure drainage and heating drainage.

[0012] 2. It has low drainage energy consumption and is environmentally friendly and safe to use.

[0013] 3. The main structure is maintenance-free and reliable to use.

[0014] The device can be used for dewatering wet sand with high water content.

[0015] Furthermore, in order to avoid clogging of the drainage hole of the seepage pipe, a geotextile sleeve is wrapped around the seepage pipe.

[0016] In order to further ensure uniform drainage of wet sand, the seepage pipes are arranged vertically and a plurality of them are evenly arranged in the main structure of the sand bin.

[0017] Furthermore, the lifting device includes two sets of lifting sprockets fixedly arranged in the main structure of the sand bin, and two lifting sprockets in each lifting sprocket set are arranged one above and one below, and a chain is wound around the lifting sprocket, and the lifting bracket is fixed to the chain. This solution can ensure that the water seepage pipe is easy to lift and lower, and the position can be adjusted at will.

[0018] Furthermore, one of the two lifting sprockets in each lifting sprocket set is a driving sprocket, and the driving sprockets are respectively connected to the output shaft of the motor in a transmission manner. The driving sprockets are connected to each other through a synchronous shaft.

[0019] Furthermore, the main structure of the sand bin includes a roof and a multi-sided enclosed facade structure, one side of the multi-sided enclosed facade structure is open, and the other sides are walls. The open side can be used as a passage for sand and gravel to enter and exit, and a door can also be set on the side.

[0020] Furthermore, in order to improve the energy-saving effect, the roof is provided with a solar panel, and the solar panel generates electricity to provide electrical energy to the electric heating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0022] Figure 2 It is the front view of the utility model.

[0023] Figure 3 It is a top view of the utility model.

[0024] Figure 4 This is a schematic diagram of the seepage pipe structure.

[0025] Figure 5 This is the horizontal cross-section of the seepage pipe.

[0026] In the figure, 1. solar panel; 2. main structure of sand bin; 3. drain valve; 4. exhaust fan; 5. negative pressure drainage base; 6. base drain hole; 7. drain pipe; 8. lifting sprocket set; 9. seepage pipe drain hole; 10. seepage pipe; 11. chain; 12. drainage trough; 13. lifting bracket; 14 synchronous shaft; 15 ventilation and drainage box, 16. electric heating rod 17. motor; 18. base upper plate; 19. geotextile cover; 20. base lower plate; 21. geotextile layer. DETAILED DESCRIPTION

[0027] like Figure 1-5 As shown, an ultra-high performance concrete sand silo with wet sand dehydration function includes a negative pressure drainage base 5, a sand silo main structure 2, and a heating and dehydration device. The sand silo main structure 2 is built above the negative pressure drainage base 5. The negative pressure drainage base 5 includes a base upper plate 18, a middle geotextile layer 21 and a base lower plate 20. The surfaces of the base upper plate 18 and the base lower plate 20 are provided with base drainage holes 6. The lower side of the base lower plate 20 is provided with a ventilation drainage box 15. The side of the ventilation drainage box 15 is provided with a drainage valve 3 and a drain valve 4. An exhaust fan 4 for external exhaust; a heating and water removal device is arranged inside the main structure 2 of the sand bin, and the heating and water removal device includes a lifting bracket 13, a seepage pipe 10 is arranged on the lower side of the lifting bracket 13, the upper end of the seepage pipe 10 is connected to a drainage trough 12, a seepage pipe drainage hole 8 is arranged on the surface of the seepage pipe 10, an electric heating rod 16 is arranged in the seepage pipe 10, and the use of the electric heating rod 16 can be equipped with a thermostat; the drainage trough 12 is fixed on the lifting bracket 13, and the drainage trough 12 is connected to the outside of the main structure 2 of the sand bin via a drainage pipe 7.

[0028] To avoid clogging of the drainage holes of the seepage pipe 10, a geotextile sleeve 19 is provided outside the seepage pipe 10. To further ensure uniform drainage of wet sand, the seepage pipe 10 is vertically arranged and a plurality of them are evenly arranged in the sand bin main structure 2.

[0029] Further, the lifting device includes two sets of lifting sprocket groups 8 fixedly arranged in the main structure 2 of the sand bin, and the two lifting sprockets in each lifting sprocket group 8 are respectively arranged one up and one down, and the lifting sprockets are wound with chains 11, and the lifting bracket 13 is fixed with the chains 11. This scheme can ensure that the seepage pipe 10 is easy to lift and the position can be adjusted at will. The lifting device includes two sets of lifting sprocket groups 8 fixedly arranged in the main structure 2 of the sand bin, and the two lifting sprockets in each lifting sprocket group 8 are respectively arranged one up and one down, and the lifting sprockets are wound with chains 11, and the lifting bracket 13 is fixed with the chains 11. This scheme can ensure that the seepage pipe 10 is easy to lift and the position can be adjusted at will. One of the two lifting sprockets in each lifting sprocket group 8 is a driving sprocket, and the driving sprockets are respectively connected to the output shaft of the motor 17. The driving sprockets are connected to each other through the synchronous shaft 14.

[0030] The main structure 2 of the sand bin includes a roof and a facade structure enclosed by multiple faces, wherein one side of the facade structure enclosed by multiple faces is open, and the other side is a wall. The open side can be used as a passage for sand and gravel to enter and exit, and a door can also be arranged on the side.

[0031] In order to improve the energy-saving effect, a solar panel 1 is provided on the roof, and the solar panel 1 generates electricity to provide electric energy to the electric heating rod 16. It can also be used to power the motor 17.

[0032] The base upper plate 18 and the base lower plate 20 can be cast by ultra-high performance concrete, which is composed of cement, slag, silica fume, quartz sand, water, water reducer, and copper-plated steel fiber. The weight proportions of the raw materials are: 30.89% to 26.46%, 8.83% to 15.43%, 4.41% to 6.61%, 44.13% to 35.27%, 7.94% to 8.82%, 0.35% to 0.53%, and 3.44% to 6 .88%, cement is silicate cement with strength grade of 52.5 or above, slag is S105 or above, silica fume has a silicon dioxide content of more than 93%, quartz sand is 40 mesh to 140 mesh, water is tap water, water reducer is polycarboxylic acid high performance water reducer with a water reduction rate of more than 30%, copper-plated steel fiber has a diameter of 0.2mm and a length of 13mm, and the shape is straight, corrugated, or hooked. The compressive strength of ultra-high performance concrete is not less than 120MPa.

[0033] When the device is working, wet sand is stored in the main structure 2 of the sand bin, and it has three drainage methods. First, the water in the sand and gravel enters the ventilation and drainage box 15 through the base upper plate 18, the geotextile layer 21 and the base lower plate 20, and the water accumulated in the ventilation and drainage box 15 is discharged through the drain valve 3; second, after the water is drained through the drain valve 3, the exhaust fan 4 can be used to exhaust air to form a negative pressure, and part of the water in the sand enters the ventilation and drainage box 15 under the influence of the negative pressure. At the same time, the exhaust air can further discharge the water vapor; third, through the lifting device, the seepage pipe 10 is inserted into the sand and gravel, and the electric heating rod 16 is used for heating and dehydration. The water in the sand and gravel is vaporized inside the seepage pipe 10, and after reaching the drainage trough 12 upward, it is cooled and liquefied, and then flows out through the drain pipe 7.

[0034] The device uses the combined effects of infiltration drainage, negative pressure drainage and heating drainage to achieve rapid dehydration of wet sand; it has low drainage energy consumption, is environmentally friendly and safe to use; the main structure is maintenance-free and reliable to use. The device can be used to dehydrate wet sand with high water content.

[0035] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. An ultra-high performance concrete sand silo with wet sand dehydration function, characterized in that: It includes a negative pressure drainage base, a sand bin main structure, and a heating and water removal device. The sand bin main structure is built above the negative pressure drainage base. The negative pressure drainage base includes a base upper plate, a middle geotextile layer and a base lower plate. The surfaces of the base upper plate and the base lower plate are provided with base drainage holes. A ventilation drainage box is provided on the lower side of the base lower plate. A drainage valve and an exhaust fan for exhausting to the outside are provided on the side of the ventilation drainage box. The heating and water removal device is arranged inside the sand bin main structure. The heating and water removal device includes a lifting bracket. A seepage pipe is provided on the lower side of the lifting bracket. The upper end of the seepage pipe is connected to a drainage trough. A seepage pipe drainage hole is provided on the surface of the seepage pipe. An electric heating rod is provided in the seepage pipe. The drainage trough is fixed on the lifting bracket. The drainage trough is connected to the outside of the sand bin main structure through the drainage pipe.

2. The ultra-high performance concrete sand silo with wet sand dehydration function according to claim 1, characterized in that: The seepage pipe is sheathed with a geotextile sheath.

3. The ultra-high performance concrete sand silo with wet sand dehydration function according to claim 1, characterized in that: The seepage pipes are arranged vertically and a plurality of them are evenly arranged in the main structure of the sand bin.

4. The ultra-high performance concrete sand silo with wet sand dehydration function according to claim 1, characterized in that: The lifting device driving the lifting bracket to lift comprises four lifting sprocket groups fixedly arranged in the main structure of the sand bin, two lifting sprockets in each lifting sprocket group are arranged one above and one below, chains are wound around the lifting sprockets, and the lifting bracket is fixed to the chains.

5. The ultra-high performance concrete sand silo with wet sand dehydration function according to claim 4, characterized in that: One of the two lifting sprockets in each lifting sprocket set is a driving sprocket, and the driving sprockets are respectively connected to the output shaft of the motor in a driving manner.

6. The ultra-high performance concrete sand silo with wet sand dehydration function according to claim 5, characterized in that: The driving sprockets are connected via a synchronous shaft transmission.

7. The ultra-high performance concrete sand silo with wet sand dehydration function according to any one of claims 1 to 6, characterized in that: The main structure of the sand bin includes a roof and a multi-sided enclosed facade structure, wherein one side of the multi-sided enclosed facade structure is open and the other sides are walls.

8. The ultra-high performance concrete sand silo with wet sand dehydration function according to claim 7, characterized in that: The roof is provided with a solar panel, and the solar panel generates electricity to provide electrical energy to the electric heating rod.

9. The ultra-high performance concrete sand silo with wet sand dehydration function according to any one of claims 1 to 6, characterized in that: The base upper plate and the base lower plate are made of ultra-high performance concrete.

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