Hand-held wet-type spray head assembly for guniting

Abstract

The utility model discloses a handheld wet-type spray head assembly for guniting, which relates to the field of guniting assemblies, and is characterized by comprising a spray head, the spray head is connected with a flow mixer assembly through a concrete pipe clamp, and the tail part of the flow mixer assembly is connected with a connecting sleeve through a concrete pipe clamp; the top of the connecting sleeve is provided with an air inlet component containing compressed air of an accelerator, the tail of the connecting sleeve is connected with a concrete conveying hose through a concrete pipe clamp, and during use, the compressed air containing the accelerator enters the flow mixer assembly through the air inlet component, blows concrete into the spray head at the position and then sprays out the concrete. The underground wet spraying device has the advantages that underground wet spraying moving operation is achieved with low cost by means of an existing compressed air source, an existing concrete pump and an existing pneumatic pump of a coal mine; the device has the advantages of simple structure, small size, light weight, convenience in transfer and the like, and can be easily assembled and moved by one person.

Description

Technical Field

[0001] The utility model relates to the field of spraying components, and more particularly to a handheld wet spraying nozzle component. Background Art

[0002] At present, dry spraying technology is widely used in underground concrete support of coal mines. However, this technology has many disadvantages. First, a large amount of air is entrained when the nozzle sprays out, and dust is easily generated when it collides with the support surface. This not only seriously affects the sight of construction workers and hinders the accuracy of operation, but also greatly harms their physical health. Long-term exposure is prone to respiratory diseases such as pneumoconiosis. At the same time, its long-term support effect is not ideal. Dry powder concrete relies on subsequent accumulation and compaction to form a support structure, but the bonding force between particles is weak. Local voids and looseness are prone to occur in the early stage. Subsequently, it is affected by factors such as changes in ground pressure and groundwater infiltration, and is prone to deformation, cracking, and even falling off. In comparison, the wet spraying process can effectively solve these problems. Its concrete is in a wet state. Due to its high water content, it will not raise a large amount of dust during spraying, and water can suppress dust. It can greatly reduce dust concentration, improve the construction environment, and protect the health of personnel. In addition, wet concrete has good fluidity and plasticity, and can fit tightly to the support surface. Water promotes hydration reaction during the solidification process, making the support structure denser and providing better long-term support effect.

[0003] However, the promotion of wet spraying technology in coal mines is currently limited, mainly because the concrete wet spraying machine equipment is large in size. It has multiple components inside to achieve functions such as sufficient mixing, uniform transportation and stable spraying. The overall structure is complex, resulting in a large size. In the narrow and cramped space underground in coal mines, transportation, installation and movement are extremely inconvenient, and it is difficult to pass through narrow tunnels smoothly. Moving equipment also consumes a lot of manpower and time when adjusting the working position; in addition, its procurement cost is also high. Due to its advanced functions and complex structure, research and development and production investment are high, and the purchase price is much higher than that of dry spraying machines. For coal mining enterprises, especially small or economically poor enterprises, large-scale procurement requires a lot of capital investment, which increases production costs, which makes it difficult to widely promote wet spraying technology in coal mines.

[0004] Therefore, in order to solve the above technical problems, the present application proposes a handheld wet spraying nozzle assembly. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a handheld wet spraying nozzle assembly.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a handheld wet spraying nozzle assembly, comprising a nozzle, which is connected to a mixer assembly through a concrete pipe clamp, and the tail of the mixer assembly is connected to a connecting sleeve through a concrete pipe clamp. An air intake component containing compressed air with an accelerator is installed on the top of the connecting sleeve, and the tail of the connecting sleeve is connected to a concrete delivery hose through a concrete pipe clamp. When in use, the compressed air containing the accelerator enters the mixer assembly through the air intake component, and blows concrete into the nozzle here and then sprays it out.

[0007] Preferably, the air intake component includes a distribution valve, a steel wire braided hose and a steel wire transparent tube. The distribution valve is connected to the top of the connecting sleeve by bolts. The distribution valve has four interfaces, the top interface is connected to the steel wire braided hose, and the interfaces on both sides are interconnected with the mixer assembly through steel wire transparent tubes. The tail interface is equipped with a mining quick connector.

[0008] Preferably, the bottom of the connecting sleeve is connected to the manual steering arm by bolts, and the manual steering arm is connected to the universal joint by bolts, and the end of the universal joint is connected to the tripod by bolts, so that the spray position of the nozzle can be adjusted.

[0009] Preferably, flat-top casters are welded to the bottom of the tripod, and the presence of the flat-top casters enables the tripod to be easily moved on the ground.

[0010] Preferably, a reinforcement plate is welded to the middle of the tripod, and the presence of the reinforcement plate can effectively increase the structural strength of the tripod.

[0011] Preferably, the steel wire braided hose is equipped with a one-way valve to maintain the directionality and stability of the flow of the accelerator in the entire system.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The utility model utilizes the existing compressed air source, concrete pump and pneumatic pump in coal mines to achieve underground wet spraying mobile operations at a low cost. It has the advantages of simple structure, small size, light weight and convenient transportation. It can be easily assembled and moved by one person, thus solving the problem that the concrete wet spraying machine equipment in the background technology is large in size and high in procurement cost, which has limited the promotion of wet spraying technology in coal mines to a certain extent.

[0014] 2. The wire braided hose of this utility model is equipped with a one-way valve. The one-way valve only allows the fluid (the accelerator pumped here) to flow in one direction, that is, from the wire braided hose toward the distribution valve. This can effectively prevent the accelerator from flowing back after entering the distribution valve, ensuring that the accelerator smoothly enters the distribution valve along the predetermined path to participate in the subsequent mixing process with compressed air, thereby maintaining the directionality and stability of the accelerator flow in the entire system.

[0015] 3. The bottom of the tripod of the utility model is welded with flat-top casters, which make the tripod easy to move on the ground;

[0016] 4. A reinforcement plate is welded in the middle of the tripod of the utility model. The tripod needs to withstand external forces from multiple directions to ensure that the entire device can operate stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] In the figure: 1. Nozzle; 2. Concrete pipe clamp; 3. Mixer assembly; 4. Distribution valve; 5. Mining quick connector; 6. Manual steering arm; 7. Steel wire braided hose; 8. One-way valve; 9. Connecting sleeve; 10. Steel wire transparent tube; 11. Universal coupling; 12. Tripod; 13. Reinforcement plate; 14. Concrete delivery hose; 15. Flat-top caster. DETAILED DESCRIPTION

[0020] like Figure 1 As shown, the utility model provides a handheld wet spraying nozzle assembly, including a nozzle 1, which is connected to a mixer assembly 3 through a concrete pipe clamp 2, and the tail of the mixer assembly 3 is connected to a connecting sleeve 9 through a concrete pipe clamp 2. An air intake component containing accelerated setting agent compressed air is installed on the top of the connecting sleeve 9, and its tail is connected to a concrete delivery hose 14 through a concrete pipe clamp 2. When in use, the compressed air containing the accelerated setting agent enters the mixer assembly 3 through the air intake component, and blows concrete into the nozzle 1 here and then sprays it out.

[0021] When in use, the concrete delivery hose 14 is connected to the concrete pump to input the concrete into the mixer assembly 3. The mining quick connector 5 is connected to the equipment or air source pipeline that provides compressed air and has a pneumatic pump in advance, so that the compressed air can smoothly pass through the mining quick connector 5 into the distribution valve 4. The wire braided hose 7 is connected to the relevant equipment or delivery pipeline that can provide the quick-setting agent pumped over, so that the quick-setting agent can be smoothly delivered to the distribution valve 4 through the wire braided hose 7. After the mining quick connector 5 and the wire braided hose 7 enter the distribution valve 4, they will be preliminarily mixed at the distribution valve 4. Then, the compressed air containing the accelerator enters the mixer assembly 3 through the steel wire transparent tube 10, and the concrete entering the mixer assembly 3 is blown into the nozzle 1 and then sprayed out. In summary, the utility model realizes underground wet spraying mobile operations at a lower cost by utilizing the existing compressed air source, concrete pump and pneumatic pump in the coal mine; it has the advantages of simple structure, small size, light weight, and easy transportation, and can be easily assembled and moved by one person.

[0022] The wire braided hose 7 is equipped with a one-way valve 8, which only allows the pumped accelerator to flow in one direction: from the wire braided hose 7 toward the distribution valve 4. This valve effectively prevents backflow of the accelerator after entering the distribution valve 4, ensuring that the accelerator smoothly enters the distribution valve 4 along a predetermined path for subsequent mixing with compressed air and other operational processes, thereby maintaining the directionality and stability of the accelerator flow throughout the system. The bottom of the connecting sleeve 9 is bolted to the manual steering arm 6, which is in turn bolted to a universal coupling 11. The end of the universal coupling 11 is bolted to a tripod 12. When the spray position of the nozzle 1 needs to be adjusted, the manual steering arm 6 is pushed or pulled, and the universal coupling 11 is driven by the manual steering arm 6 through its bolted connection with the universal coupling 11. The universal coupling 11 then moves the tripod 12 through its bolted connection with the tripod 12, thereby adjusting the spray position of the nozzle 1.

[0023] Furthermore, flat-top casters 15 are welded to the bottom of the tripod 12. The presence of these casters 15 allows the tripod 12 to be easily moved on the ground. The operator only needs to apply a small push or pull force to push the tripod 12 and the entire device to the desired position, thereby quickly and conveniently adjusting the spray direction and coverage of the nozzle 1 to better meet the operational requirements of different areas. A reinforcing plate 13 is welded to the middle of the tripod 12, and the tripod 12 needs to withstand external forces from multiple directions. For example, when the spray position of the nozzle 1 is adjusted by pushing and pulling the manual steering arm 6, the tripod 12 will be subjected to corresponding pulling or pushing forces. Moreover, when the nozzle 1 is spraying, the reaction force of the concrete spraying and other factors will also generate certain forces on the tripod 12. The presence of the reinforcing plate 13 effectively increases the structural strength of the tripod 12, enabling it to better withstand these external forces, avoiding deformation, distortion, or even damage to the tripod 12 due to excessive external forces, and ensuring the stable operation of the entire device.

[0024] The foregoing description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any person skilled in the art may smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by any person familiar with the profession without departing from the scope of the technical solution of the present invention by using the technical contents disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A handheld wet spraying nozzle assembly, comprising a nozzle (1), characterized in that: The invention comprises a nozzle (1) connected to a mixer assembly (3) through a concrete pipe clamp (2), and the rear end of the mixer assembly (3) is connected to a connecting sleeve (9) through a concrete pipe clamp (2). An air intake component containing compressed air of an accelerating setting agent is installed on the top of the connecting sleeve (9), and the rear end of the connecting sleeve (9) is connected to a concrete delivery hose (14) through a concrete pipe clamp (2). When in use, the compressed air containing the accelerating setting agent enters the mixer assembly (3) through the air intake component, and blows concrete into the nozzle (1) at this location and then sprays it out.

2. A handheld wet spraying nozzle assembly according to claim 1, characterized in that: The air intake component comprises a distribution valve (4), a steel wire braided hose (7) and a steel wire transparent tube (10). The distribution valve (4) is connected to the top of the connecting sleeve (9) via bolts. The distribution valve (4) has four interfaces, the top interface of which is connected to the steel wire braided hose (7), and the interfaces on both sides of which are interconnected with the mixer assembly (3) via the steel wire transparent tube (10). The tail interface is equipped with a mining quick connector (5).

3. A handheld wet spraying nozzle assembly according to claim 1, characterized in that: The bottom of the connecting sleeve (9) is connected to the manual steering arm (6) via bolts, and the manual steering arm (6) is connected to the universal joint (11) via bolts, and the end of the universal joint (11) is connected to the tripod (12) via bolts.

4. A handheld wet spraying nozzle assembly according to claim 3, characterized in that: A flat-top caster (15) is welded to the bottom of the tripod (12).

5. The handheld wet spraying nozzle assembly according to claim 3, characterized in that: A reinforcing plate (13) is welded to the middle of the tripod (12).

6. A handheld wet spraying nozzle assembly according to claim 2, characterized in that: The steel wire braided hose (7) is provided with a one-way valve (8).

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