Aggregate storage bin feeding device and concrete aggregate storage bin
By designing multiple storage spaces and flip parts in the aggregate silo feeding device, the aggregate drop speed and kinetic energy are reduced, and the problems of uneven grade and serious wear during feeding of aggregate silos in large mixing stations are solved, and more uniform aggregate grading and reduced maintenance costs are achieved.
Patent Information
- Application Number
- CN202510372372.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-05-13
AI Technical Summary
The aggregate silo in the large mixing station is divided into gravity due to gravity, resulting in uneven grading and the discrete coefficient of concrete strength exceeds 10%. When the material is discharged at the same time, the inner wall of the silo and the discharge port are seriously worn by the aggregate impact, which makes the maintenance cost high.
A feeding device for the aggregate silo is designed, including a feeding barrel and a flip piece. A multiple flip piece is provided in the feeding barrel from top to bottom, which separates the inner cavity of the feeding barrel into multiple storage spaces, and is connected to the concrete silo through the cut pipe. The flip piece and spoiler are used to reduce the falling speed and kinetic energy of the aggregate, and reduce collision with the silo wall and the cutter port.
By reducing the falling speed and kinetic energy of the aggregate, the wear of the silo silo wall and the outlet is reduced, maintenance costs are reduced, and the aggregate is more uniform in the silo, improving the grading quality.
Smart Images
Figure CN119974247A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of concrete, and in particular to an aggregate bin feeding device and a concrete aggregate bin. Background Art
[0002] Concrete aggregate refers to the loose granular material that acts as a skeleton or filler in concrete. It is divided into coarse aggregate and fine aggregate. Coarse aggregate refers to pebbles, crushed stones, etc., and fine aggregate refers to natural sand, artificial sand, etc. The screened aggregate is generally stored in an aggregate silo for use in the concrete mixing process. The single silo volume of a large-scale mixing station aggregate silo is 200m 3 / h or more, and the height is greater than 4 meters. When feeding such a high aggregate silo, the aggregates are sorted by gravity, large particles gather on the silo wall, and fine particles concentrate in the center of the silo, resulting in uneven grading and a concrete strength dispersion coefficient of more than 10%. In addition, when unloading, the inner wall and discharge port of the silo are severely worn by the impact of aggregates, resulting in high maintenance costs. Summary of the invention
[0003] In order to solve the above technical problems, the present invention provides an aggregate silo feeding device.
[0004] The technical solution adopted by the present invention is:
[0005] An aggregate silo feeding device comprises a feeding tube, wherein n flipping members are arranged in sequence from top to bottom in the feeding tube, and the flipping members divide the inner cavity of the feeding tube into n+1 storage spaces, where n≥2; each storage space is connected to the upper, middle and lower parts of a concrete silo through a feeding tube, respectively, and the feeding tube is arranged in a one-to-one correspondence with the storage space, and one end of the feeding tube is connected to the upper part of the storage space, and the other end is inclined downwardly extended to the concrete silo; the bottom of the feeding tube is open, and the open end is connected to the concrete silo through a discharging pipe, and the discharging pipe is arranged inclined downward; the flipping member comprises a flap and a reset spring, and the flap is used to support aggregate in the storage space on its upper side, and automatically flips when the supported aggregate exceeds a set weight, so that the aggregate in the upper storage space falls into the storage space on the lower side; the reset spring is used for automatically resetting the flap after flipping.
[0006] Furthermore, the cross section of the feeding barrel is circular or square, and the shape of the flap is adapted to the feeding barrel.
[0007] Furthermore, the return spring is a torsion spring, one end of which is connected to the flap, and the other end of which is connected to the feeding barrel.
[0008] Furthermore, the flap is a whole plate, or is composed of two or more sub-plates.
[0009] Furthermore, a plurality of flow-interfering members are provided in the material storage space, and the flow-interfering members are used to slow down the falling speed of the aggregate and make the coarse aggregate and the fine aggregate collide and mix.
[0010] Furthermore, the spoiler is a freely rotatable guide roller, and the guide rollers are arranged in parallel and at intervals on the cross section of the feeding barrel.
[0011] Furthermore, the guide rollers are provided in two rows, an upper row and an lower row, and the upper and lower rows of guide rollers are staggered.
[0012] Furthermore, the feeding cylinder is composed of a plurality of long cylinders and short cylinders which are detachably connected, the flipping piece is arranged in the short cylinder, flanges are arranged at both ends of the long cylinder, the short cylinder is clamped in the two long cylinders, and is connected to the long cylinder by bolts passing through the flanges.
[0013] A concrete aggregate silo comprises any one of the above-mentioned aggregate silo feeding devices.
[0014] Furthermore, the concrete aggregate silo is provided with 2-4 silo bodies, and each silo body shares one aggregate silo feeding device.
[0015] The beneficial effects of the present invention are as follows: by arranging an aggregate silo feeding device, aggregates can be first fed into a feeding tube and then fed into the aggregate silo through a discharge pipe; by arranging a turning piece in the feeding tube, the aggregates continuously fed into the feeding tube can greatly reduce the kinetic energy of the aggregates falling under the action of the turning piece, and reduce the falling speed, thereby reducing the collision power between the aggregates and the silo wall and the discharge port, reducing the wear of the silo wall and the discharge port, and reducing the maintenance cost; and, due to the reduction in the falling speed, the sorting effect caused by gravity is reduced, thereby making the aggregates in the silo more uniform and improving the grading quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the installation structure of the aggregate bin feeding device of the present invention.
[0017] Figure 2 yes Figure 1 AA section view of the center feed barrel.
[0018] Figure 3 yes Figure 1 A partial enlarged view of the center feed barrel.
[0019] Figure 4 It is a structural schematic diagram of a flip member of the present invention.
[0020] Figure 5 yes Figure 4 A local enlarged view of point B in FIG.
[0021] Figure 6 It is a structural schematic diagram of another flip member of the present invention.
[0022] Figure 7 It is a structural schematic diagram of an aggregate silo of the present invention.
[0023] Figure 8 It is a structural schematic diagram of another aggregate bin of the present invention. DETAILED DESCRIPTION
[0024] The present invention is further described below in conjunction with specific examples to facilitate understanding of the present invention, but the present invention is not limited thereto.
[0025] See also Figure 1-Figure 3 The present invention provides an aggregate silo feeding device 10, comprising a feeding tube 11, wherein three flipping members are sequentially arranged in the feeding tube 11 from top to bottom, namely, a first flipping member 121, a second flipping member 122 and a third flipping member 123; the three flipping members divide the inner cavity of the feeding tube into four approximately equal material storage spaces; each material storage space is connected to the upper, middle and lower parts of a concrete silo 20 through a first down pipe 131, a second down pipe 132, a third down pipe 133, a fourth down pipe 134 and a discharge pipe 135. A first feed port is arranged at the top of the concrete silo 20, and a second, third, fourth and fifth feed ports are sequentially arranged on the side from top to bottom. The feed ports are approximately equally spaced, and the fifth feed port is arranged at the lowest side of the circular silo body. The first discharge pipe 131, the second discharge pipe 132, the third discharge pipe 133, and the fourth discharge pipe 134 are respectively connected to the upper part of the first, second, third, and fourth storage spaces at one end, and the other end extends obliquely downward to the concrete silo and is connected to the first, second, third, and fourth feed ports of the silo.
[0026] The top of the feeding barrel 11 is open for feeding, and the bottom is open for connecting the discharge pipe 135. The other end of the discharge pipe 135 extends obliquely downward to the concrete silo and is connected to the fifth feed port of the silo. The side of the feeding barrel 11 is provided with first, second, third, and fourth discharge ports for connecting the first discharge pipe 131, the second discharge pipe 132, the third discharge pipe 133, and the fourth discharge pipe 134, respectively, from top to bottom. The cross-sectional shape of the feeding barrel 11 can be circular or square.
[0027] See also Figure 2 and Figure 3 In order to facilitate the installation and maintenance of the flip part, the feeding cylinder 11 in this embodiment is composed of 4 long cylinders and 3 short cylinders, namely the first long cylinder 111, the second long cylinder 113, the third long cylinder 115, the fourth long cylinder 117, the first short cylinder 112, the second short cylinder 114 and the third short cylinder 116. The lower end of the first long cylinder 111 is provided with a first connecting flange 1111, and the upper and lower ends of the second long cylinder 113 are respectively provided with a second connecting flange A1131 and a second connecting flange B. The first short cylinder 112 is sandwiched between the first long cylinder 111 and the second long cylinder 113, and is connected to the two long cylinders by bolts 1112 passing through the first connecting flange 111 and the second connecting flange A1131. The connection method of other long and short cylinders is the same as above.
[0028] The first flipping member 121 , the second flipping member 122 and the third flipping member 123 are respectively disposed in the first short cylinder 112 , the second short cylinder 114 and the third short cylinder 116 .
[0029] When the aggregate bin feeding device 10 is used, the first feeding pipe 131, the second feeding pipe 132, the third feeding pipe 133, the fourth feeding pipe 134 and the discharge pipe 135 can be supported and fixed on the aggregate bin; the first feeding pipe 131, the second feeding pipe 132, the third feeding pipe 133, the fourth feeding pipe 134 and the discharge pipe 135 are respectively welded to the aggregate bin and the feeding cylinder 11. Since the flipping parts are all arranged in the short cylinder, and the long cylinder is connected to the short cylinder by bolts, the short cylinder can be easily disassembled to maintain or update the flipping parts.
[0030] See also Figure 4 and Figure 5 Each flipping member includes a flap and a return spring. In one embodiment of the present invention, taking the first flipping member 121 as an example, the flap is a circular whole plate, one end of the flap is rotatably connected to the inner wall of the first material storage space through a rotating shaft 1211, and the two ends of the rotating shaft 1211 are rotatably inserted into the openings of the inner wall of the feeding barrel, and two torsion springs 1222 are respectively installed, one end of the torsion spring 1222 is fixed on the flap, and the other end is fixed on the inner wall of the feeding barrel. The torsion of the torsion spring is selected according to the weight of the aggregate in the first material storage space and the weight of the first flap.
[0031] See also Figure 6 In another embodiment of the present invention, the flap is composed of two semicircular support plates, a first support plate 12-1 and a second support plate 12-2. The arc ends of the two semicircular support plates are rotatably mounted on the inner wall of the feeding barrel through a rotating shaft and a return spring. When the two semicircular support plates are closed, they form a circular flap. With this design, the turning space of the flap can be reduced and the size of a single flap can be reduced.
[0032] See also Figure 1 and Figure 2 In this embodiment, a spoiler 14 is provided in the middle of each storage space. The spoiler 14 is a freely rotatable guide roller. Both ends of the guide roller 14 are rotatably fixed to the inner wall of the feeding barrel through a sleeve or a bearing. The guide rollers are arranged in two rows in parallel along the cross-sectional direction of the feeding barrel, and the upper and lower rows are staggered. In this way, most of the falling aggregates can collide with the guide rollers, thereby causing collision and mixing, and slowing down the falling speed. The guide rollers can rotate freely, which can prevent the aggregates from accumulating on the guide rollers and causing poor feeding.
[0033] The working principle of the present invention is:
[0034] The feeding device continuously feeds aggregate into the feeding barrel. The aggregate fed into the feeding barrel is first blocked by the first flap 121 and temporarily stored in the first feeding space. When the weight of the aggregate in the first feeding space is greater than the supporting force of the first flap return spring, the first flap turns over, and the aggregate in the first feeding space falls into the second feeding space. The first flap is reset under the action of its return spring and supports the aggregate again. By analogy, the aggregate passes through the first feeding space, the second feeding space, the third feeding space, and the fourth feeding space in turn, and is finally fed into the concrete silo by the discharge pipe 135. The lower space of the concrete silo is full of aggregates, that is, when the material level reaches approximately the position of the feed port at the bottom of the silo, the aggregates gradually fill the discharge pipe 135 and fill the fourth feeding space from bottom to top. The aggregates in the third feeding space are added to the aggregate silo through the feeding pipe 134. When the aggregate liquid level in the aggregate silo approximately reaches the height of the feeding pipe 134, the feeding pipe 134 is gradually filled with aggregates. The aggregates in the second feeding space are added to the aggregate silo through the feeding pipe 133. By analogy, when the feeding pipe 132 is filled with aggregates, the aggregates enter the aggregate silo through the feeding pipe 131, thereby filling the aggregate silo with aggregates. In the above-mentioned feeding process, the kinetic energy of the falling aggregate is reduced from more than 4 meters to one-fourth, which greatly reduces the falling speed, thereby reducing the collision force with the silo wall and the discharge port, reducing the wear of the silo wall and the discharge port; and reducing the sorting effect caused by gravity, thereby making the aggregate in the silo more uniform and improving the grading quality.
[0035] By arranging freely rotating guide rollers in each storage space, when the falling aggregate hits the guide rollers, the falling speed is reduced due to the blocking effect of the guide rollers, further reducing the gravity sorting effect; and the aggregates are mixed due to mutual collision, further improving the mixing effect.
[0036] When the aggregate bin is unloading, when the material level in the bin drops to the bottom position of the unloading pipe 132, the aggregate in the unloading pipe 132 and the upper part of the second storage space enters the aggregate bin through the unloading pipe 132, and the aggregate in the first storage space enters the aggregate bin through the unloading pipe 132, and so on. The aggregate in the feeding barrel is emptied during the unloading process of the aggregate bin.
[0037] To prevent the final state of the flipping piece from being closed during the unloading process, the outlet position of the unloading pipe is preferably lower than the lowest point height of the flipping piece after the flipping, so that the flipping piece can be flipped smoothly and the aggregate in the previous storage space can enter the aggregate bin through the unloading pipe of the next storage space.
[0038] See also Figure 7 and Figure 8 In order to improve the utilization rate of the feeding device and reduce the space occupied, the present invention also provides a design scheme in which multiple aggregate silos share one feeding device.
[0039] like Figure 7As shown, the aggregate silo includes two silo bodies, a first silo body 21 and a second silo body 22, and the two silo bodies are symmetrically arranged on both sides of the aggregate silo feeding device 10, and the two silo bodies are respectively connected to the feeding cylinder 11 through corresponding feeding pipes and discharging pipes.
[0040] like Figure 8 As shown, the aggregate bin includes four bin bodies, namely, a first bin body 21, a second bin body 22, a third bin body 23 and a fourth bin body 24. The four bin bodies are arranged in an array on the circumference of the feeding device 10 and are connected to the feeding cylinder 11 through corresponding feeding pipes and discharging pipes.
[0041] The unloading principle of multiple silos is the same as that of a single silo, and simultaneous feeding can be achieved.
[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications are also within the protection scope of the present invention.
Claims
1. An aggregate silo feeding device, characterized in that: It includes a feeding barrel, in which n flipping members are arranged in sequence from top to bottom, and the flipping members divide the inner cavity of the feeding barrel into n+1 storage spaces, n≥2; each storage space is connected with the upper, middle and lower parts of the concrete silo through a feeding pipe, respectively, and the feeding pipe is arranged in a one-to-one correspondence with the storage space, and one end of the feeding pipe is connected to the upper part of the storage space, and the other end is inclined downwardly extended to the concrete silo; the bottom of the feeding barrel is open, and the open end is connected to the concrete silo through a discharging pipe, and the discharging pipe is arranged inclined downward; the flipping member includes a flap and a reset spring, the flap is used to support aggregate in the storage space on its upper side, and automatically flips when the supported aggregate exceeds the set weight, so that the aggregate in the upper storage space falls into the storage space on the lower side; the reset spring is used for automatic reset of the flap after flipping.
2. The aggregate bin feeding device according to claim 1, characterized in that: The cross section of the feeding barrel is circular or square, and the shape of the flap is adapted to the feeding barrel.
3. The aggregate bin feeding device according to claim 1, characterized in that: The return spring is a torsion spring, one end of which is connected to the flap, and the other end of which is connected to the feeding cylinder.
4. The aggregate bin feeding device according to claim 1, characterized in that: The flap is a whole board, or is composed of two or more sub-boards.
5. The aggregate bin feeding device according to claim 1, characterized in that: A plurality of flow-interfering members (14) are arranged in the material storage space, and the flow-interfering members are used to slow down the falling speed of the aggregate and make the coarse aggregate and the fine aggregate collide and mix.
6. The aggregate bin feeding device according to claim 5, characterized in that: The spoiler is a freely rotatable guide roller, and the guide rollers are arranged in parallel and at intervals on the cross section of the feeding cylinder.
7. The aggregate bin feeding device according to claim 6, characterized in that: The guide rollers are arranged in two rows, upper and lower rows, which are staggered.
8. The aggregate bin feeding device according to claim 1, characterized in that: The feeding cylinder is composed of a plurality of long cylinders and short cylinders which are detachably connected. The flipping piece is arranged in the short cylinder. Flanges are arranged at both ends of the long cylinder. The short cylinder is clamped in the two long cylinders and connected to the long cylinder by bolts passing through the flanges.
9. A concrete aggregate silo, characterized in that: The invention comprises the aggregate silo feeding device as described in any one of claims 1 to 7.
10. A concrete aggregate silo according to claim 9, characterized in that: The concrete aggregate silo is provided with 2-4 silo bodies, and each silo body shares one aggregate silo feeding device.