Feeding device of concrete mixing plant

Abstract

The utility model belongs to the technical field of concrete production, and discloses a concrete mixing plant feeding device which comprises a material collecting bin, a material mixing hopper is arranged below a material outlet of the material collecting bin, a material mixing and stirring device is arranged in the material mixing hopper, an inclined auger conveyor is arranged below the material mixing hopper, and the auger conveyor is arranged below the material mixing hopper. And a discharge port of the mixing hopper is connected with a feed port of the auger conveyor through a blanking pipe. According to the concrete mixing device, the multiple material collecting bins and the mixing hopper are arranged, the multiple material collecting bins are used for containing cement, sand and pebbles respectively, and therefore the cement, the sand and the pebbles can be put into the mixing hopper at the same time to be preliminarily mixed and then conveyed into a concrete mixing station through the auger conveyor; in this way, the materials are preliminarily mixed when entering the concrete mixing plant, the mixing time of the concrete mixing plant can be effectively shortened, and therefore the concrete production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete production technical field, especially relate to a concrete mixing station feeding device. BACKGROUND

[0002] Concrete refers to the engineering composite material that the cementitious material cemented aggregate into a whole. Usually, the concrete word refers to the cement as cementitious material, sand, stone as aggregate, with water (may contain admixture and admixture) according to certain proportion, after stirring, the cement concrete is also called ordinary concrete, it is widely used in civil engineering. Concrete has the characteristics of abundant raw materials, low price and simple production process, so its use is more and more large. At the same time, concrete also has high compressive strength, good durability, wide strength grade range and other characteristics. These characteristics make its use range very wide, not only in various civil engineering, in shipbuilding industry, mechanical industry, ocean development, geothermal engineering and other fields, concrete is also an important material.

[0003] The concrete mixing station is mainly composed of five systems such as stirring host, material weighing system, material conveying system, material storage system and control system and other auxiliary facilities, and the feeding device is also essential. When the existing concrete mixing station feeding device is used, sand, gravel and cement are usually fed by conveyors. Whether using one conveyor to feed respectively or using multiple conveyors to feed simultaneously, the materials are batched into the concrete mixing station, and the materials cannot be contacted, so that the mixing time in the concrete mixing station is longer, and the production efficiency is low. UTILITY MODEL CONTENT

[0004] In order to solve the above problems, the utility model provides a concrete mixing station feeding device.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a concrete mixing station feeding device, including aggregate bin, the discharge port below of aggregate bin is provided with mixing hopper, the mixing hopper is provided with mixing and stirring device, the mixing hopper is provided with inclined arrangement's auger conveyor, the discharge port of mixing hopper and the feed inlet of auger conveyor are connected through the downcomer.

[0006] Further, the aggregate bin includes one powder bin and two aggregate bins arranged in a triangular shape, the two aggregate bins are arranged side by side, the aggregate bin includes a bucket-shaped bin and a C-shaped fence arranged on the bucket-shaped bin, and the opening side of the C-shaped fence is located on the side of the bucket-shaped bin away from the powder bin.

[0007] Further, the mixing and stirring device comprises stirring shafts rotatably arranged on the opposite two hopper walls of the mixing hopper, one end of the stirring shafts extends into the mixing hopper and is provided with a plurality of stirring rods, the other end of the stirring shafts extends out of the mixing hopper and is provided with a driving gear, and a driving mechanism for driving the stirring shafts to rotate is further arranged outside the mixing hopper.

[0008] Further, two stirring shafts are arranged on each hopper wall at intervals, a plurality of groups of stirring rods are arranged on each stirring shaft along the length direction of the stirring shaft, a plurality of stirring rods are arranged in each group of stirring rods in a circumferential annular array along the stirring shaft, and the lengths of the stirring rods in the plurality of groups gradually increase from the center of the mixing hopper to the hopper walls.

[0009] Further, two rotating shafts are further rotatably arranged on the hopper walls of the mixing hopper, the rotating shafts are provided with transmission gears, the two transmission gears are in mesh with each other, the driving gear is in mesh with the adjacent transmission gear, and the driving mechanism drives one of the transmission gears to rotate.

[0010] Further, the driving mechanism comprises a mounting plate arranged outside the hopper walls of the mixing hopper, a driving motor is arranged on the mounting plate, a driving roller is arranged on the output shaft of the driving motor, a driven roller is further coaxially arranged on the rotating shaft adjacent to the driving motor, and the driving roller and the driven roller are connected through a synchronous belt.

[0011] Further, the auger conveyor comprises an obliquely arranged shell, an auger shaft is rotatably arranged in the shell, the bottom end of the auger shaft extends out of the shell, an auger motor is arranged at the bottom end of the shell, the output shaft of the auger motor is connected with the bottom end of the auger shaft, helical blades are further arranged on the auger shaft, a discharge port is arranged at the highest end of the shell, and a discharge pipe is arranged at the discharge port.

[0012] In summary, the utility model has the following beneficial effects:

[0013] 1. In the application, a plurality of material collecting bins and a mixing hopper are arranged, the plurality of material collecting bins are respectively used for placing cement, sand and gravel, cement, sand and gravel can be simultaneously put into the mixing hopper for preliminary mixing, and then the preliminary mixed cement, sand and gravel are conveyed to the concrete mixing station through the auger conveyor, so that the materials have been preliminarily mixed when entering the concrete mixing station, the stirring time of the concrete mixing station can be effectively reduced, and the concrete production efficiency is improved.

[0014] 2. In the application, a mixing and stirring device is arranged in the mixing hopper, the stirring rods are driven to rotate by the stirring shafts of the mixing and stirring device, and cement, sand and gravel are preliminarily mixed and stirred under the action of the stirring rods when entering the mixing hopper, so that the materials can be preliminarily mixed in the feeding process, and the production efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the whole structure schematic diagram of the embodiment of the utility model;

[0016] Figure 2 is the structure schematic diagram of the mixing hopper and auger conveyor part of the embodiment of the utility model;

[0017] Figure 3 is the cross section structure schematic diagram of the mixing hopper and auger conveyor part of the embodiment of the utility model;

[0018] Figure 4 is the structure schematic diagram of the mixing hopper, mixing and stirring device, drive mechanism part of the embodiment of the utility model;

[0019] Figure 5 is the structure schematic diagram of the mixing hopper, mixing and stirring device part of the embodiment of the utility model;

[0020] Figure 6 is the structure schematic diagram of the aggregate bin part of the embodiment of the utility model.

[0021] In the drawing: 10, aggregate bin;11, powder bin;12, aggregate bin;13, hopper-shaped bin;14, C-shaped fence;20, mixing hopper;21, discharging pipe;30, mixing and stirring device;31, stirring shaft;32, stirring rod;33, drive gear;34, rotating shaft;35, transmission gear;40, auger conveyor;41, shell;42, auger shaft;43, auger motor;44, spiral blade;45, discharge pipe;50, drive mechanism;51, mounting plate;52, drive motor;53, driving roller;54, driven roller;55, synchronous belt. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments; based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] As Figures 1-6As shown in the figure, this application discloses a concrete mixing plant feeding device, including a collection bin 10, a mixing hopper 20, and an auger conveyor 40. The collection bin 10 is used to store materials such as cement, sand, and gravel. The mixing hopper 20 is located below the discharge port of the collection bin 10 and is used to receive the materials discharged from the collection bin 10. A mixing and stirring device 30 is installed in the mixing hopper 20 for preliminary mixing of the materials. The auger conveyor 40 is inclinedly arranged below the mixing hopper 20, and its inlet is connected to the discharge port of the mixing hopper 20 through a discharge pipe 21 for conveying the materials passing through the mixing hopper 20 into the concrete mixing plant.

[0024] Specifically, the aggregate bin 10 includes a powder bin 11 and two aggregate bins 12 arranged in a triangular pattern. The powder bin 11 is used to store cement, and its top is equipped with a cover to prevent dust from spreading. The two aggregate bins 12 are arranged side by side and are used to store gravel and sand, respectively. The aggregate bin 12 includes a hopper-shaped bin 13 and a C-shaped enclosure 14 installed on the hopper-shaped bin 13. The opening side of the C-shaped enclosure 14 is located on the side of the hopper-shaped bin 13 away from the powder bin 11. The aggregate bin 12 is also equipped with a screen to remove larger particles from the gravel and sand, preventing large materials from entering the mixing plant and affecting the concrete quality. During installation, the arrangement can be adjusted according to the site conditions. If there is a difference in elevation on the site, the aggregate bin 12 can be placed at a higher position, so that the top of the hopper-shaped bin 13 of the aggregate bin 12 is level with the ground, which facilitates the loading of materials into the aggregate bin 12 by a loader. If the terrain is flat, the aggregate bin 12 can be supported by raising the foundation or setting up a support frame. Then, a ramp can be set on one side of the opening of the C-shaped enclosure 14 to facilitate loading by a loader. In this way, the loader can shovel stones or sand from the other side of the stockpile into the aggregate bin 12 for easy loading.

[0025] The mixing and stirring device 30 includes stirring shafts 31 rotatably mounted on two opposite walls of the mixing hopper 20. Specifically, bearings are installed on the walls of the mixing hopper 20, and stirring shafts 31 are installed inside the bearings. The length direction of the stirring shafts 31 is perpendicular to the corresponding walls. One end of the stirring shaft 31 extends into the mixing hopper 20 and does not extend beyond the center plane of the mixing hopper 20 to avoid interference with the opposite stirring shaft 31. Several sets of stirring rods 32 are spaced apart along the length direction of the stirring shafts 31 located inside the mixing hopper 20. Several stirring rods 32 are arranged in a circular array around the stirring shaft 31 in each set. The length of the stirring rods 32 in the several sets gradually increases from the center of the mixing hopper 20 towards the walls, that is, the stirring rod 32 closest to the center of the mixing hopper 20 is the shortest to avoid interference with the opposite stirring rod 32. The stirring rods 32 are arranged at an acute angle to the length of the stirring shaft 31, forming a branched arrangement on the stirring shaft 31. When material is discharged from the aggregate bin 10, the stirring shaft 31 drives the stirring rods 32 to rotate, creating a stirring effect and thus initially mixing the cement, sand, and gravel. Specifically, two stirring shafts 31 are spaced apart on each bin wall to expand the mixing range.

[0026] The other end of the stirring shaft 31 extends out of the mixing hopper 20 and is equipped with a drive gear 33. On the wall of the mixing hopper 20, corresponding to the stirring shaft 31, two rotating shafts 34 are also rotatably arranged. Transmission gears 35 are arranged on the rotating shafts 34. The two transmission gears 35 mesh with each other, and the drive gear 33 meshes with the adjacent transmission gear 35, thereby connecting the two drive gears 33 and the two transmission gears 35 together. The transmission gears 35 drive the drive gears 33 to rotate, and the two drive gears 33 rotate in opposite directions, thereby making the two stirring shafts 31 on the hopper wall rotate in opposite directions, so that the stirring rods 32 on the two stirring shafts 31 rotate from both sides to the middle, resulting in a better stirring effect.

[0027] A drive mechanism 50 for driving the stirring shaft 31 to rotate is also provided outside the mixing hopper 20. Specifically, the drive mechanism 50 includes a mounting plate 51 provided outside the wall of the mixing hopper 20, a drive motor 52 is provided on the mounting plate 51, a drive roller 53 is provided on the output shaft of the drive motor 52, and a driven roller 54 is coaxially provided on the rotating shaft 34 adjacent to the drive motor 52. The drive roller 53 and the driven roller 54 are connected by a synchronous belt 55. Thus, the drive motor 52 drives the drive roller 53 to rotate, and under the action of the synchronous belt 55, it drives the driven roller 54 adjacent to the drive motor 52 to rotate, thereby driving the transmission gear 35 coaxially connected to the driven roller 54 to rotate, and then driving the two drive gears 33 to rotate in opposite directions.

[0028] The auger conveyor 40 includes an inclined housing 41 with several support columns below it for supporting the auger conveyor 40. An auger shaft 42 is rotatably mounted inside the housing 41, with its bottom end extending outside the housing 41. An auger motor 43 is located at the bottom of the housing 41, and its output shaft is connected to the bottom end of the auger shaft 42, driving the auger shaft 42 to rotate. Spiral blades 44 are also mounted on the auger shaft 42. A discharge port with a discharge pipe 45 is located at the highest point of the housing 41. The auger shaft 42 drives the spiral blades 44 to rotate, thus moving the material from the lowest point of the housing 41 to the highest point and outputting it through the discharge port and discharge pipe 45. Using the auger conveyor 40 allows the material to move upwards in a spiral motion as the spiral blades 44 move, further changing the position of the initially mixed material during transport, thereby improving the mixing effect.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A concrete plant charging device, characterized by: The application relates to a material collecting and mixing device, which comprises a material collecting bin (10), a mixing hopper (20) arranged below the discharge port of the material collecting bin (10), a mixing and stirring device (30) arranged in the mixing hopper (20), an inclined auger conveyor (40) arranged below the mixing hopper (20), and a discharge pipe (21) connecting the discharge port of the mixing hopper (20) and the feeding port of the auger conveyor (40).

2. A concrete plant charging system as defined in claim 1 wherein: The material collecting bin (10) comprises one powder bin (11) and two aggregate bins (12) arranged in a triangular shape, the two aggregate bins (12) are arranged side by side, the aggregate bin (12) comprises a bucket-shaped bin (13) and a C-shaped fence (14) arranged on the bucket-shaped bin (13), and the opening side of the C-shaped fence (14) is located on the side of the bucket-shaped bin (13) away from the powder bin (11).

3. A concrete plant charging system as in claim 1 wherein: The mixing and stirring device (30) comprises stirring shafts (31) rotatably arranged on two opposite bucket walls of the mixing hopper (20), one end of the stirring shaft (31) is arranged in the mixing hopper (20) and is provided with a plurality of stirring rods (32), the other end of the stirring shaft (31) is arranged outside the mixing hopper (20) and is provided with a driving gear (33), and a driving mechanism (50) for driving the stirring shaft (31) to rotate is further arranged outside the mixing hopper (20).

4. A concrete plant charging system according to claim 3, wherein: Two stirring shafts (31) are arranged on each bucket wall at intervals, a plurality of groups of stirring rods (32) are arranged on each stirring shaft (31) along the length direction of the stirring shaft (31), a plurality of stirring rods (32) are arranged in each group of stirring rods (32) in a circumferential annular array along the stirring shaft (31), and the lengths of the stirring rods (32) in the plurality of groups gradually increase from the center of the mixing hopper (20) to the bucket wall.

5. A concrete plant charging system as defined in claim 4 wherein: Two rotating shafts (34) are further rotatably arranged on the bucket wall of the mixing hopper (20), the rotating shaft (34) is provided with a transmission gear (35), the two transmission gears (35) are meshed with each other, the driving gear (33) is meshed with the adjacent transmission gear (35), and the driving mechanism (50) drives one of the transmission gears (35) to rotate.

6. A concrete plant charging system according to claim 5, wherein: The driving mechanism (50) comprises a mounting plate (51) arranged outside the bucket wall of the mixing hopper (20), the mounting plate (51) is provided with a driving motor (52), a driving roller (53) is arranged on the output shaft of the driving motor (52), a driven roller (54) is further coaxially arranged on the rotating shaft (34) adjacent to the driving motor (52), and the driving roller (53) and the driven roller (54) are connected through a synchronous belt (55).

7. A concrete plant charging system as in claim 1, wherein: The auger conveyor (40) comprises an inclined housing (41), an auger shaft (42) is rotatably arranged in the housing (41), the bottom end of the auger shaft (42) is arranged outside the housing (41), an auger motor (43) is arranged at the bottom end of the housing (41), the output shaft of the auger motor (43) is connected with the bottom end of the auger shaft (42), a spiral blade (44) is further arranged on the auger shaft (42), and a discharge port is arranged at the highest end of the housing (41), and a discharge pipe (45) is arranged at the discharge port.

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