CN221756408U - A hydraulic roller compacted concrete mixing plant using forced four main machines - Google Patents

Abstract

The utility model relates to the technical field of concrete mixing buildings, and discloses a hydraulic roller compacted concrete mixing building using forced four main machines, which comprises a main building structure and an auxiliary building structure, wherein the main building structure adopts a structure form of combined bent frame and overhead aggregate bin, the auxiliary building adopts a structure form of independent portal frame structure powder bin overhead or side-mounted structure, and the main building is sequentially divided into a material feeding layer, a material distribution maintenance layer, a material distribution layer, a mixing layer and a material discharging layer from top to bottom. The hydraulic roller compacted concrete mixing building using the forced four main machines is characterized in that four forced concrete mixer bars are arranged on a mixing layer platform, a centralized hopper and a rotary feeder are adopted for feeding, and through the design of arranging the first main machine and the fourth main machine, independent alternate or joint production of each mixer is realized, the concrete production process is simplified, the production efficiency is improved, and the production requirements of mass and high-quality roller compacted concrete of water conservancy and hydropower engineering are met.

Description

A hydraulic roller compacted concrete mixing plant using forced four main machines

Technical Field

The utility model relates to the technical field of concrete mixing plants, in particular to a hydraulic rolling concrete mixing plant using forced four main machines.

Background Art

Concrete mixing plant is a tower-type complete set of equipment that uses machines instead of manual labor to mix sand and gravel aggregates, cement, fly ash, admixtures, additives, normal temperature water, cold water or ice and other materials into qualified concrete in a certain proportion. The sand and gravel aggregates are lifted into the aggregate bin above the mixer at one time. The aggregates are directly weighed from top to bottom by gravity and directly enter the mixer through the centralized hopper, which saves the secondary lifting time of the materials after weighing and greatly improves the production efficiency. Due to the top-mounted aggregate bin, the concrete mixing plant is high, the main steel structure is complex, the equipment investment is large, and it is mainly used in large-scale projects, especially water conservancy and hydropower dams and water conservancy hub projects. The forced twin-shaft mixer is a high-efficiency and powerful mixing device composed of two horizontally set mixing shafts, mixing arms at a certain angle, blade scrapers, etc., with low resistance and low wear. Roller-compacted concrete is a dry and hard concrete that can be transported and laid with the same transportation and laying equipment as earth-rock dam construction, and compacted in layers with a vibrating roller. It is the mainstream variety of hydraulic concrete. The production of RCC has high requirements on equipment. Usually, self-falling mixers are used, which are inefficient and require materials to fall from a height for mixing. The mixing effect is poor and the mixing time is long. Large-volume forced concrete mixers have high production efficiency, but are expensive and have high operating costs. With the development of high-performance RCC and the advancement of production technology, the mixing time has been greatly increased. Currently, various conventional concrete mixing plants can no longer meet the development requirements of new hydraulic RCC.

Utility Model Content

1. Technical issues to be solved

In view of the deficiencies in the prior art, the utility model provides a hydraulic rolling concrete mixing plant using four forced main machines.

(II) Technical solution

In order to solve the above problems, the utility model provides the following technical solutions: a hydraulic roller compacted concrete mixing plant using a forced four-machine engine, comprising a main building structure and an annex building structure, wherein the main building structure adopts a combined rack and an aggregate silo top-mounted structural form, and the annex building adopts an independent gantry structure with a powder silo top-mounted or side-mounted structural form, and the main building is divided into a feeding layer, a batching maintenance layer, a batching layer, a mixing layer and a discharging layer from top to bottom;

The feeding layer includes a sand material feeding belt conveyor and a stone material feeding belt conveyor, and rotary hoppers are respectively arranged below the sand material feeding belt conveyor and the stone material feeding belt conveyor, and a sand and gravel material belt conveyor is arranged below the rotary hopper, and an aggregate bin is arranged below the sand and gravel material belt conveyor;

The batching inspection layer includes a sand and gravel aggregate scale and a powder scale, and the bottom of the aggregate bin is connected to the sand and gravel aggregate scale;

The batching layer includes a rotary feeder and a centralized hopper, and the centralized hopper is located below the discharge ports of the sand and gravel aggregate scale and the powder scale;

The rotary feeder is located below the centralized hopper;

The mixing layer includes a forced twin-horizontal shaft mixer, which is independently supported inside the mixing building by a mixer bracket. A concrete discharge hopper is arranged below the forced twin-horizontal shaft mixer, and a concrete discharge arc door is arranged at the lower end of the concrete discharge hopper.

Preferably, the main building is supported by a main building steel structure.

Preferably, the annex building is supported by annex building racks, a powder bin is fixedly mounted on the annex building racks, a batching screw machine is provided at the discharge port at the lower end of the powder bin, the batching screw machine is connected to the powder scale of the main building, and a manual butterfly valve is provided on the batching screw machine.

Preferably, an air path system is provided under the annex building, and a dust removal system is provided inside the main building, and the dust removal system is connected to the inside of the sand and gravel aggregate scale and the powder scale.

Preferably, the number of the forced twin-horizontal shaft mixers is four groups, and the four groups of the forced twin-horizontal shaft mixers are arranged in a matrix or ring form on the same platform and connected to a feeding mechanism consisting of a centralized hopper and a rotary feeder.

(III) Beneficial effects

Compared with the prior art, the utility model provides a hydraulic roller compacted concrete mixing plant using a forced four-host machine, which has the following beneficial effects:

1. The hydraulic roller compacted concrete mixing plant with four forced concrete mixers is equipped with four forced concrete mixers on the mixing layer platform. The centralized hopper and rotary feeder are used for feeding. The design of four forced concrete mixers on the first floor can realize the independent alternation or joint production of each mixer, simplify the concrete production process, and improve the production efficiency to meet the large-volume and high-quality roller compacted concrete production requirements of water conservancy and hydropower projects.

2. The hydraulic roller compacted concrete mixing plant with four forced mixers has greatly improved the safety of equipment production compared to the arrangement of a single forced mixer, avoiding the risk of a mixer failure and the entire line being shut down. At the same time, the use of four forced mixers replaces large-volume giant forced mixers with small-volume conventional mixers with low cost and good effect, reducing equipment investment and maintenance costs, and achieving safe, efficient and low-cost production and operation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the elevation of a hydraulic roller compacted concrete mixing plant using four forced main machines according to the present invention;

FIG2 is a schematic structural diagram of a matrix arrangement of mixers according to the present invention;

FIG3 is a schematic diagram of the structure of the rotary arrangement of the mixer of the utility model.

In the figure: 1 concrete discharge arc door, 2 main building steel structure, 3 mixer bracket, 4 concrete discharge hopper, 5 forced twin-shaft mixer, 6 rotary feeder, 7 centralized hopper, 8 sand and gravel aggregate scale, 9 powder scale, 10 batching screw machine, 11 manual butterfly valve, 12 annex building rack, 13 powder silo, 14 aggregate silo, 15 sand and gravel belt conveyor, 16 sand feeding belt conveyor, 17 rotary hopper, 18 stone feeding belt conveyor, 19 dust removal system, 20 air system.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1 to 3. The utility model provides a new technical solution: a hydraulic roller compacted concrete mixing plant using a forced four-machine engine, including a main building structure and an annex building structure. The main building structure adopts a combined rack and an aggregate silo on the top of the structure. The annex building adopts an independent gantry structure with a powder silo on the top or on the side. The main building is divided into a feeding layer, a batching maintenance layer, a batching layer, a mixing layer and a discharging layer from top to bottom. The feeding layer includes a sand material feeding belt conveyor 16 and a stone material feeding belt conveyor 18. The sand material feeding belt conveyor 16 is provided with a sand material feeding belt conveyor 18. A rotary hopper 17 is provided below the belt conveyor 16 and the stone material feeding belt conveyor 18, respectively. A sand and gravel belt conveyor 15 is provided below the rotary hopper 17. An aggregate bin 14 is provided below the sand and gravel belt conveyor 15. The sand and gravel belt conveyor 16 and the stone material feeding belt conveyor 18 can be used to transport sand and stone to the sand and gravel belt conveyor 15 through the rotary hopper 17, respectively. The sand and stone are transported to the aggregate bin 14 through the sand and gravel belt conveyor 15 for storage and waiting for use. The batching maintenance layer includes a sand and gravel aggregate scale 8 and a powder scale. 9, the lower part of the aggregate bin 14 is connected to the sand and gravel aggregate scale 8, and the powder and sand and gravel aggregate are weighed by the sand and gravel aggregate scale 8 and the powder scale 9 respectively, and the weighing and batching are performed according to the required amount of each plate. The batching layer includes a rotary feeder 6 and a centralized hopper 7, and the centralized hopper 7 is located below the discharge port of the sand and gravel aggregate scale 8 and the powder scale 9. The powder and sand and gravel aggregate weighed by the sand and gravel aggregate scale 8 and the powder scale 9 enter the centralized hopper 7. The rotary feeder 6 is located below the centralized hopper 7, and the materials with good proportions can be fed into the centralized hopper 7 through the rotary feeder 6. The material is transported to the mixing layer below for mixing. The mixing layer includes a forced twin-horizontal-shaft mixer 5. The forced twin-horizontal-shaft mixer 5 is independently supported inside the mixing building by a mixer bracket 3, which effectively isolates the vibration of the mixer during the mixing process and affects the accuracy of the weighing system arranged in the main building. A concrete discharge hopper 4 is arranged below the forced twin-horizontal-shaft mixer 5. A concrete discharge arc gate 1 is arranged at the lower end of the concrete discharge hopper 4. The mixed concrete enters the concrete discharge hopper 4, and finally the concrete discharge arc gate 1 is opened to flow out to the mixing truck.

In this embodiment, the main building is supported by the main building steel structure 2.

In this embodiment, the annex building is supported by an annex building frame 12, and a powder bin 13 is fixedly installed on the annex building frame 12. A batching screw machine 10 is provided at the discharge port at the lower end of the powder bin 13. The batching screw machine 10 is connected to the main building powder scale 9. A manual butterfly valve 11 is provided on the batching screw machine 10 to control the quality of powder addition.

In this embodiment, an air path system 20 is arranged under the annex building, and the air path system 20 provides an air path for the mixing building. A dust removal system 19 is arranged inside the main building, and the dust removal system 19 is connected to the inside of the sand and gravel aggregate scale 8 and the powder scale 9, so as to remove dust from the inside of the sand and gravel aggregate scale 8 and the powder scale 9.

In this embodiment, the number of the forced twin-horizontal shaft mixers 5 is four groups, and the four groups of the forced twin-horizontal shaft mixers 5 are arranged in a matrix or ring form on the same platform, and are connected to feeding mechanisms such as a centralized hopper 7 and a rotary feeder 6, so as to achieve the best angle and direction entry mode of concrete raw materials (aggregates, powders), improve mixing efficiency and mixing quality, and avoid the phenomenon of shaft sticking; the mixed mature concrete can be discharged into a double-bucket double-line discharging system in sequence, which can realize the simultaneous production of different types of concrete or the efficient production of the same type of concrete.

Working principle: When the hydraulic roller compacted concrete mixing plant using forced four main machines is working, the sand and gravel powder are respectively transported to the inside of the aggregate bin 14 through the sand feeding belt conveyor 16 and the stone feeding belt conveyor 18 through the sand and gravel belt conveyor 15, and then transported to the inside of the sand and gravel aggregate scale 8 through the aggregate bin 14, and the aggregate can be weighed. The manual butterfly valve 11 is opened, and the powder in the powder bin 13 can be transported to the inside of the powder scale 9 for weighing through the batching screw machine 10. It is weighed according to the required proportion. After the weighing is completed, the powder and aggregate are transported to the inside of the forced twin-horizontal shaft mixer 5 through the centralized hopper 7 and the rotary feeder 6 for mixing. The mixed concrete enters the concrete discharge hopper 4, and finally the concrete discharge arc door 1 is opened to flow out to the mixer truck.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. The utility model provides an use hydraulic rolling concrete mixer building of four main machines of forced formula, includes main building structure and attaches building structure to constitute, its characterized in that: the main building structure adopts a structure form of combined bent frame and overhead aggregate bin, the auxiliary building adopts a structure form of independent portal structure powder bin overhead or side-mounted structure, and the main building is sequentially divided into a material feeding layer, a material distribution maintenance layer, a material distribution layer, a stirring layer and a material discharging layer from top to bottom;

The stirring layer is including forced double-horizontal-shaft stirrer (5), the quantity of forced double-horizontal-shaft stirrer (5) is four groups, four groups forced double-horizontal-shaft stirrer (5) adopt matrix or annular form to arrange at same platform, forced double-horizontal-shaft stirrer (5) are through agitator support (3) at the inside independent support of stirring building, the below of forced double-horizontal-shaft stirrer (5) is provided with concrete play hopper (4), concrete play hopper (4) lower extreme is provided with concrete ejection of compact arc door (1).

2. A hydraulic roller compacted concrete mixing building using a forced four main units according to claim 1, characterized in that: the feeding layer comprises a sand feeding adhesive tape machine (16) and a stone feeding adhesive tape machine (18), a rotary hopper (17) is arranged below the sand feeding adhesive tape machine (16) and the stone feeding adhesive tape machine (18) respectively, a sand feeding adhesive tape machine (15) is arranged below the rotary hopper (17), and a aggregate bin (14) is arranged below the sand feeding adhesive tape machine (15);

the batching maintenance layer comprises a sand aggregate scale (8) and a powder scale (9), and the lower part of the aggregate bin (14) is communicated with the sand aggregate scale (8);

The batching layer is including rotary feeder (6) and concentrated hopper (7), rotary feeder (6) are located concentrated hopper (7) below, concentrated hopper (7) are located the below of grit aggregate balance (8) and powder balance (9) discharge gate.

3. A hydraulic roller compacted concrete mixing building using a forced four main units according to claim 1, characterized in that: the main building is supported by a main building steel structure (2).

4. A hydraulic roller compacted concrete mixing building using a forced four main units according to claim 2, characterized in that: the auxiliary building is supported through an auxiliary building bent frame (12), a powder bin (13) is fixedly mounted on the auxiliary building bent frame (12), a batching screw machine (10) is arranged at a discharge hole at the lower end of the powder bin (13), the batching screw machine (10) is communicated with a main building powder scale (9), and a manual butterfly valve (11) is arranged on the batching screw machine (10).

5. A hydraulic roller compacted concrete mixing building using a forced four main units according to claim 2, characterized in that: the air path system (20) is arranged below the auxiliary building, the dust removing system (19) is arranged inside the main building, and the dust removing system (19) is communicated with the inside of the sand aggregate scale (8) and the inside of the powder scale (9).