Gas-material mixing device of mining concrete wet spraying machine

Abstract

The utility model relates to the technical field of gas-material mixing, and discloses a gas-material mixing device of a mining concrete wet spraying machine, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a mixing tank, the top of the mixing tank is provided with a driving assembly for providing power, the outside of the driving assembly is fixedly connected with a plurality of fixing discs, and the fixing discs are fixedly connected with the bottom plate. A plurality of arc-shaped blocks are fixedly connected to the interiors of the multiple fixing discs, air outlet holes are formed in the interiors of the arc-shaped blocks, a plurality of cutting grooves are formed in the interiors of the multiple fixing discs, sliding grooves are formed in the interiors of the arc-shaped blocks, and sliding plates are slidably connected to the interiors of the arc-shaped blocks. According to the concrete solidification device, airflow sucked by the air pump enters the arc-shaped block, displacement and reset of the sliding plate can be achieved by means of the elastic force of the spring at the moment, and therefore entering of the airflow can be controlled, and the situation that the solidification efficiency of concrete is affected due to backflow of air and liquid is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-material mixing, in particular to a gas-material mixing device for a mine concrete wet spraying machine. Background Art

[0002] Mining concrete wet spraying machine is a kind of concrete spraying support equipment widely used in the construction of underground spaces such as mine shafts, railway and highway tunnels, water conservancy and hydropower caverns. It mixes the raw materials with water and then adds a certain amount of admixtures to form a concrete slurry with certain fluidity and adhesion. Under the action of high-pressure air, it is evenly sprayed onto the surface of the surrounding rock of the project to achieve the purpose of rapid support and reinforcement.

[0003] A search revealed Chinese patent publication number: CN219953368U. This utility model belongs to the field of coal mine wet shotcreting machines and specifically relates to an air-material mixing device for a coal mine wet shotcreting machine. The air-material mixing device includes an annular air inlet duct surrounding the outer ring of a concrete pipe. The annular air inlet duct communicates with the concrete pipe via an air outlet duct extending in the direction of concrete spraying. The accelerator pipe and air inlet duct of the air-material mixing device are also connected to the annular air inlet duct. The air outlet duct of the annular air inlet duct forms a 30° angle with the axis of the concrete pipe and has a 10° inclination in the clockwise direction. The air-material mixing device is improved by reducing the number of elbows and rationalizing the arrangement of interfaces, thereby converting the air inlet duct into an annular one, reducing wind loss and increasing the discharge rate. The air outlet ducts in the air-material mixing device are redistributed and tilted at a certain angle in the clockwise direction. This generates a vortex after the air is discharged, reducing material accumulation at the bottom, increasing the discharge rate at the nozzle, and reducing slurry drop at the nozzle, making the discharge smoother.

[0004] Although the above patent mentions in the specification that "the gas-material mixing device has many advantages such as compact and simple structure, easy installation, light weight, high reliability, improved work efficiency, and reduced labor intensity of workers", it cannot effectively ensure the reflux of gas or liquid during the mixing process of air flow and liquid, which affects the mixing efficiency and the solidification efficiency of concrete. Therefore, in view of the above shortcomings, an gas-material mixing device for a mining concrete wet spraying machine is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a gas-material mixing device for a mine concrete wet shotcrete machine, aiming to improve the problem in the prior art that some gas-material mixing devices for mine concrete wet shotcrete machines cannot effectively prevent the backflow of gas and liquid during the mixing process.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A gas-material mixing device for a wet concrete spraying machine for mining, comprising a base plate, a mixing tank fixedly connected to the top of the base plate, a driving assembly for providing power provided on the top of the mixing tank, a plurality of fixed disks fixedly connected to the outside of the driving assembly, a plurality of arc blocks fixedly connected to the inside of the plurality of fixed disks, air outlet holes provided in the interiors of the plurality of arc blocks, a plurality of cutting grooves provided in the interiors of the plurality of fixed disks, a sliding groove provided in the interiors of the plurality of arc blocks, a sliding plate slidably connected to the interiors of the plurality of arc blocks, a sleeve fixedly connected to the outsides of the plurality of sliding plates, a sliding sleeve slidably connected to the outsides of the plurality of sleeves, a limiting ring slidably connected to the insides of the plurality of sliding sleeves, a spring provided in the interiors of the plurality of sliding sleeves, a fixed plate fixedly connected to the insides of the plurality of arc blocks, and a gas supply assembly for providing gas provided at the bottom of the driving assembly;

[0008] As a further description of the above technical solution: the driving assembly includes a motor, the bottom of the motor is mounted on the top of the mixing tank, and the output end of the motor is fixedly connected to a driving shaft;

[0009] As a further description of the above technical solution: the air supply assembly includes a sealing ring, the top of the sealing ring is fixedly connected to the outer bottom side of the drive shaft, a ventilation groove is opened inside the drive shaft, the bottom of the base plate is fixedly connected to a fixing frame, the top left side of the base plate is fixedly connected to an air pump, and the output end of the air pump is fixedly connected to an air supply pipe;

[0010] As a further description of the above technical solution: a gas-liquid mixing pump is fixedly connected to the right side of the top of the base plate, the input end of the gas-liquid mixing pump is fixedly connected to a suction pipe, the output end of the gas-liquid mixing pump is fixedly connected to a discharge pipe, the right side of the discharge pipe is fixedly connected to a circulation pipe, the right side of the circulation pipe is fixedly connected to a plurality of telescopic hoses, the right sides of the plurality of telescopic hoses are fixedly connected to conical nozzles, the outsides of the plurality of conical nozzles are fixedly connected to a fixing sleeve, the outsides of the plurality of conical nozzles are fixedly connected to two connecting rings, the bottoms of the plurality of fixing sleeves are fixedly connected to a support plate, the top right side of the base plate is fixedly connected to a cylinder, the driving end of the cylinder is fixedly connected to a push rod, the bottom of the support plate is fixedly connected to a plurality of sliding columns, the bottoms of the plurality of sliding columns are fixedly connected to a limiting disk, and the top right side of the base plate is fixedly connected to a plurality of sliding cylinders;

[0011] As a further description of the above technical solution: a feed pipe is fixedly connected to the left side of the top of the mixing tank, a feed cover is threadedly connected to the top of the feed pipe, universal wheels are fixedly connected to the four corners of the bottom plate, and a push handle is fixedly connected to the left side of the outside of the bottom plate;

[0012] As a further description of the above technical solution: the outer portion of the drive shaft is rotatably connected to the interior of the fixed frame, and the outer portion of the sealing ring is rotatably connected to the exterior of the fixed frame;

[0013] As a further description of the above technical solution: the top of the gas pipe is fixedly connected to the bottom of the fixed frame, and the outer portion of the sliding plate is slidably connected to the inner portion of the sliding groove;

[0014] As a further description of the above technical solution: the top of the push rod is fixedly connected to the bottom of the support plate, and the outside of the limiting plate is slidably connected to the inside of the sliding cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the air flow sucked in by the air pump enters the interior of the arc block through the air pipe. At this time, the elastic force of the spring can be used to achieve the displacement and reset of the sliding plate, thereby controlling the entry of the air flow and effectively preventing the backflow of gas and liquid from affecting the solidification efficiency of the concrete.

[0017] 2. In the present invention, the displacement of the support plate can be controlled by means of a cylinder, thereby adjusting the height of the conical nozzle. At this time, the telescopic hose can effectively ensure the spraying of the internal mixture, and can adapt to the solidification of concrete at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of an air-material mixing device for a mine concrete wet shotcrete machine proposed in the utility model;

[0019] Figure 2 This is a schematic diagram of the suction pipe structure of the air-material mixing device of the mine concrete wet spraying machine proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the fixed plate structure of the air-material mixing device of the wet shotcrete machine for mining proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of the fixed plate structure of the air-material mixing device of the mine concrete wet shotcrete machine proposed by the utility model;

[0022] Figure 5 This is a schematic diagram of the drive shaft structure of an air-material mixing device for a mine concrete wet shotcrete machine proposed in the utility model;

[0023] Figure 6 The utility model is a schematic diagram of the structure of a conical nozzle of an air-material mixing device of a wet concrete spraying machine for mining.

[0024] Legend:

[0025] 1. Base plate; 2. Mixing tank; 3. Motor; 4. Drive shaft; 5. Fixed plate; 6. Arc block; 7. Air outlet; 8. Cutting groove; 9. Sliding groove; 10. Sliding plate; 11. Sleeve; 12. Sliding sleeve; 13. Limiting ring; 14. Spring; 15. Fixed plate; 16. Ventilation groove; 17. Sealing ring; 18. Fixed frame; 19. Air pump; 20. Air pipe; 21. Gas-liquid mixing pump; 22. Suction pipe; 23. Discharge pipe; 24. Circulation pipe; 25. Telescopic hose; 26. Conical nozzle; 27. Fixed sleeve; 28. Connecting ring; 29. ​​Support plate; 30. Cylinder; 31. Push rod; 32. Sliding column; 33. Limiting plate; 34. Sliding cylinder; 35. Feed pipe; 36. Feed cover; 37. Universal wheel; 38. Push handle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Reference Figure 1 - Figure 4The utility model provides an embodiment: a gas-material mixing device for a wet concrete spraying machine for mining, comprising a base plate 1, which is the basic platform of the gas-material mixing device for the wet concrete spraying machine for mining. A mixing tank 2 is fixedly connected to the top of the base plate 1, and the mixing tank 2 is designed to contain liquid accelerator and other additives. A driving assembly for providing power is provided on the top of the mixing tank 2. The driving assembly comprises a motor 3, the bottom of the motor 3 is mounted on the top of the mixing tank 2, the output end of the motor 3 is fixedly connected to a driving shaft 4, and a plurality of fixed disks 5 are fixedly connected to the outside of the driving assembly. The motor 3 serves as a power source, and transmits power to the fixed disk 5 through the driving shaft 4 to make it rotate. A plurality of arc blocks 6 are fixedly connected to the inside of the plurality of fixed disks 5, and the arc blocks 6 not only participate in the stirring of the liquid, but also control the airflow. Distribution to optimize the mixing effect, multiple arc blocks 6 are each provided with an air outlet 7, multiple fixed plates 5 are each provided with a plurality of cutting grooves 8, multiple arc blocks 6 are each provided with a sliding groove 9, multiple arc blocks 6 are each slidably connected to a sliding plate 10, the outside of the sliding plate 10 is slidably connected to the inside of the sliding groove 9, the outside of multiple sliding plates 10 are each fixedly connected to a sleeve 11, the outside of multiple sleeves 11 are each slidably connected to a sliding sleeve 12, the inside of multiple sliding sleeves 12 are each slidably connected to a limiting ring 13, and the inside of multiple sliding sleeves 12 are each provided with a spring 14. When the airflow pushes the sliding plate 10, the sleeve 11 will compress the spring 14, the inside of multiple arc blocks 6 is each fixedly connected to a fixed plate 15, and a gas supply component for providing gas is provided at the bottom of the drive component.

[0028] Reference Figure 1 and Figure 5 The air supply assembly includes a sealing ring 17, the top of the sealing ring 17 is fixedly connected to the outer bottom side of the drive shaft 4, the interior of the drive shaft 4 is provided with a ventilation groove 16, the bottom of the base plate 1 is fixedly connected to a fixed frame 18, the outside of the drive shaft 4 is rotatably connected to the inside of the fixed frame 18, the outside of the sealing ring 17 is rotatably connected to the outside of the fixed frame 18, an air pump 19 is fixedly connected to the top left side of the base plate 1, the output end of the air pump 19 is fixedly connected to an air pipe 20, the air pump 19 transports air to the fixed frame 18 through the air pipe 20, and then sends it into the mixing tank 2 through the ventilation groove 16 and the air outlet 7, which provides the necessary gas for the mixing process, and the top of the air pipe 20 is fixedly connected to the bottom of the fixed frame 18.

[0029] Reference Figure 1 - Figure 2, a gas-liquid mixing pump 21 is fixedly connected to the right side of the top of the bottom plate 1, and the input end of the gas-liquid mixing pump 21 is fixedly connected to a suction pipe 22, and the output end of the gas-liquid mixing pump 21 is fixedly connected to a discharge pipe 23, and the right side of the discharge pipe 23 is fixedly connected to a circulation pipe 24. The gas-liquid mixing pump 21 is responsible for extracting the final mixture in the mixing tank 2 and sending it into the circulation pipe 24 through the discharge pipe 23. The right side of the circulation pipe 24 is fixedly connected to a plurality of telescopic hoses 25, and the right sides of the plurality of telescopic hoses 25 are all fixedly connected to a conical nozzle 26. The telescopic hose 25 connects the circulation pipe 24 and the conical nozzle 26. The retractable feature makes the spraying height adjustable, and the outside of the plurality of conical nozzles 26 are fixedly connected to a fixing sleeve 27, and the outside of the plurality of conical nozzles 26 are fixedly connected to two connecting rings 28. The conical nozzle 26 is responsible for spraying the mixture evenly, and the fixing sleeve 27 and the connecting ring 28 ensure the stable installation of the nozzle;

[0030] Reference Figure 1 、 Figure 2 and Figure 6 The bottoms of the multiple fixed sleeves 27 are fixedly connected to the support plate 29, the top right side of the bottom plate 1 is fixedly connected to the cylinder 30, the driving end of the cylinder 30 is fixedly connected to the push rod 31, when the cylinder 30 is started, the support plate 29 drives the telescopic hose 25 to move up and down to adjust the spraying height, the top of the push rod 31 is fixedly connected to the bottom of the support plate 29, the bottom of the support plate 29 is fixedly connected to multiple sliding columns 32, the bottoms of the multiple sliding columns 32 are fixedly connected to the limit plate 33, the top right side of the bottom plate 1 is fixedly connected to multiple sliding cylinders 34, the sliding columns 3 2 and the limit plate 33 cooperate with the sliding cylinder 34 to provide a smooth lifting path for the support plate 29. The outer part of the limit plate 33 is slidably connected to the inside of the sliding cylinder 34. A feed pipe 35 is fixedly connected to the left side of the top of the mixing tank 2. The feed pipe 35 is located at the top of the mixing tank 2, allowing the user to add liquid accelerator and other additives to the tank. The top of the feed pipe 35 is threadedly connected to a feed cover 36. The four corners of the bottom of the base plate 1 are fixedly connected to universal wheels 37. The universal wheels 37 provide the mobility of the equipment. A push handle 38 is fixedly connected to the left side of the outside of the base plate 1.

[0031] Working principle: When wet spraying of concrete is required, first, the feed cover 36 can be rotated to remove the feed cover 36 from the inside of the feed pipe 35, and then the liquid quick-setting agent and other additives that need to be mixed can be added to the inside of the mixing tank 2 through the feed pipe 35, and then the feed cover 36 can be used to reseal the feed pipe 35, and then the motor 3 can be started, and the drive shaft 4 can be driven to rotate by the motor 3, and then the air pump 19 can be started to suck the external air into the inside of the air pipe 20 and then inject it into the inside of the fixed frame 18, and finally enter the inside of the air outlet 7 through the ventilation groove 16, and then the sliding plate 10 can be pushed by the air flow, and then the sleeve 11 will slide inside the sliding sleeve 12, and then the spring 14 can be compressed, and then the sliding plate 10 will slide inside the sliding groove 9, and now the air flow can pass through the arc The arc block 6 enters the interior of the mixing tank 2. At this time, the internal liquid can be stirred as the fixed disk 5 rotates. At the same time, the liquid can be sheared with the help of the cutting groove 8 and mixed with the help of the air flow ejected from the arc block 6, so that the gas and liquid can be fully mixed. Then the gas-liquid mixing pump 21 can be started to draw the mixture inside the mixing tank 2 into the interior of the circulation pipe 24, and finally sprayed out through the conical nozzle 26 through the telescopic hose 25. When it is necessary to spray at different heights, it is only necessary to start the cylinder 30 to lift the support plate 29. At this time, the telescopic hose 25 can be stretched, and then it can adapt to the height change of the conical nozzle 26, so that concrete at different heights can be wet sprayed. When the air flow no longer gushes out, the sliding plate 10 will be reset with the help of the elastic force of the spring 14, thereby effectively preventing the entry and backflow of gas and liquid.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas-material mixing device for a wet concrete spraying machine for mining, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to a mixing tank (2), and a driving assembly for providing power is provided on the top of the mixing tank (2). The outside of the driving assembly is fixedly connected to a plurality of fixed disks (5), and the interiors of the plurality of fixed disks (5) are fixedly connected to a plurality of arc blocks (6), and the interiors of the plurality of arc blocks (6) are provided with air outlet holes (7), the interiors of the plurality of fixed disks (5) are provided with a plurality of cutting grooves (8), and the interiors of the plurality of arc blocks (6) are provided with sliding grooves (9). The interior of each block (6) is slidably connected to a sliding plate (10), the exterior of each of the plurality of sliding plates (10) is fixedly connected to a sleeve (11), the exterior of each of the plurality of sleeves (11) is slidably connected to a sliding sleeve (12), the interior of each of the plurality of sliding sleeves (12) is slidably connected to a limiting ring (13), the interior of each of the plurality of sliding sleeves (12) is provided with a spring (14), the interior of each of the plurality of arc-shaped blocks (6) is fixedly connected to a fixed plate (15), and a gas supply assembly for providing gas is provided at the bottom of the drive assembly.

2. The air-material mixing device for a wet shotcrete spraying machine for mining use according to claim 1, characterized in that: The driving assembly comprises a motor (3), the bottom of the motor (3) is mounted on the top of the mixing tank (2), and the output end of the motor (3) is fixedly connected to a driving shaft (4).

3. The air-material mixing device for a mine concrete spraying machine according to claim 2, characterized in that: The air supply assembly includes a sealing ring (17), the top of the sealing ring (17) is fixedly connected to the outer bottom side of the drive shaft (4), a ventilation groove (16) is provided inside the drive shaft (4), the bottom of the base plate (1) is fixedly connected to a fixing frame (18), the top left side of the base plate (1) is fixedly connected to an air pump (19), and the output end of the air pump (19) is fixedly connected to an air supply pipe (20).

4. The air-material mixing device for a wet shotcrete spraying machine for mining use according to claim 1, characterized in that: A gas-liquid mixing pump (21) is fixedly connected to the right side of the top of the bottom plate (1), a suction pipe (22) is fixedly connected to the input end of the gas-liquid mixing pump (21), a discharge pipe (23) is fixedly connected to the right side of the discharge pipe (23), a circulation pipe (24) is fixedly connected to the right side of the circulation pipe (24), a plurality of telescopic hoses (25) are fixedly connected to the right side of the plurality of telescopic hoses (25), a conical nozzle (26) is fixedly connected to the outside of the plurality of conical nozzles (26), and a fixed sleeve (2 7), the exteriors of the plurality of conical nozzles (26) are fixedly connected to two connecting rings (28), the bottoms of the plurality of fixed sleeves (27) are fixedly connected to a support plate (29), the top right side of the bottom plate (1) is fixedly connected to a cylinder (30), the driving end of the cylinder (30) is fixedly connected to a push rod (31), the bottom of the support plate (29) is fixedly connected to a plurality of sliding columns (32), the bottoms of the plurality of sliding columns (32) are fixedly connected to a limiting disk (33), and the top right side of the bottom plate (1) is fixedly connected to a plurality of sliding cylinders (34).

5. The air-material mixing device for a wet shotcrete spraying machine for mining use according to claim 1, characterized in that: A feed pipe (35) is fixedly connected to the left side of the top of the mixing tank (2), a feed cover (36) is threadedly connected to the top of the feed pipe (35), universal wheels (37) are fixedly connected to the four corners of the bottom of the bottom plate (1), and a push handle (38) is fixedly connected to the left side of the outside of the bottom plate (1).

6. The air-material mixing device for a wet shotcrete spraying machine for mining use according to claim 3, characterized in that: The outer portion of the drive shaft (4) is rotatably connected to the interior of the fixed frame (18), and the outer portion of the sealing ring (17) is rotatably connected to the exterior of the fixed frame (18).

7. The air-material mixing device for a wet shotcrete spraying machine for mining use according to claim 3, characterized in that: The top of the gas delivery pipe (20) is fixedly connected to the bottom of the fixed frame (18), and the outside of the sliding plate (10) is slidably connected to the inside of the sliding groove (9).

8. The air-material mixing device for a wet shotcrete spraying machine for mining use according to claim 4, characterized in that: The top of the push rod (31) is fixedly connected to the bottom of the support plate (29), and the outside of the limiting plate (33) is slidably connected to the inside of the sliding cylinder (34).

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