Fully automatic mortar spraying machine wall cement mortar powder wall machine for sale

Shotcrete machine product introduction

As a new type of high-efficiency shotcrete machine, the shotcrete machine plays a vital role in modern engineering construction, especially suitable for concrete shotcrete operations in 5m×5m cross-section tunnels. With its unique working method, it uses compressed air or other power to transport the mixed materials prepared in a specific proportion through pipelines and spray them at high speed to the sprayed surface, so that they solidify and harden, and then form a concrete support layer. This technical process is simple, the construction cost is low and the application is wide, and it occupies an important position in many construction fields. ​
1. Diverse product types

Based on the difference in working capacity, the shotcrete machine can be divided into 3 cubic shotcrete machine, 5 cubic shotcrete machine, 6 cubic shotcrete machine, 7 cubic shotcrete machine, etc. At the same time, according to the different materials, it can be subdivided into dry shotcrete machine and wet shotcrete machine. The dry shotcrete machine mixes cement and aggregate in a certain proportion, blows them to the nozzle through compressed air, and mixes them with the pressure water from the pressure water tank at the nozzle and sprays them out. This method is simple and fast to construct, but there are problems such as large dust, large rebound loss of sprayed material, and the need for high-grade cement. The wet spraying machine sends the water-added concrete mixture into the spraying machine. The dust content is low and the rebound is reduced during the spraying process, which is a more ideal spraying method. However, wet materials are easy to condense in the material pipeline, causing blockage, and cleaning work is more troublesome. In addition, there is a semi-wet spraying machine between the two. Its concrete mixture is a wet material with a moisture content of 5%-8% (by volume). This material has less dust when spraying, and has less adhesion than wet materials. It does not stick to the tank, which is an improvement on the dry and wet methods. ​
2. Exquisite structural design​
The spraying machine is mainly composed of a drive device, a rotor assembly, an air duct system, a spraying system, an electrical control box, etc. The upper body of some models includes coagulant funnel, quick-setting agent wing, upper cover, screen and sieve wing; the middle body includes batching plate, quantitative plate, hopper, doser, vertical shaft, clutch, discharge elbow, combination plate, arc plate and air inlet plate; the lower body has a rotating body and a rotating liner. Some advanced shotcrete machines adopt a straight-through rotor non-bonding material chamber design, which is smooth and efficient and time-saving. The four-point elastic compensation clamping structure makes the sealing effect good, the dust around the machine is less, and the service life of the wearing parts is extended. The low-pressure and high-speed vortex airflow conveying is adopted to effectively overcome the problems of adhesion, pipe blocking and pulse deflection in material conveying, ensuring uniform, continuous and stable material flow. The new nozzle and discharge elbow device equipped significantly improve the spraying effect, reduce rebound and improve the quality of the spray layer.​
3. Significant performance advantages

Efficient operation: Some models of shotcrete machines have strong production capacity, such as the PZ-5 shotcrete machine with a spraying capacity of up to 5.5 cubic meters per hour, and the PZ-7 shotcrete machine with a production capacity of 7m³/h. With automatic loading equipment, work efficiency can be greatly improved. For example, the hydraulic automatic loading shotcrete unit and the unique mechanical automatic unloading equipment only require 2-3 people to operate the machine easily, saving a lot of manpower compared to manual unloading. At the same time, the automatic loading equipment can also reduce the idling rate of the shotcrete machine. According to tests, the efficiency can be increased by about 30% compared to manual loading. ​
Environmental protection and energy saving: In terms of environmental protection, wet shotcrete machines greatly reduce the dust concentration beside the machine and outside the nozzle, effectively eliminating the harm to workers’ health. Some shotcrete machines reduce material waste and dust pollution by optimizing the structure. For example, the automatic unloading process of the hopper avoids the waste of mixed materials and dust pollution caused by manual lifting, and changes in the return air structure reduce return air dust. In terms of energy saving, some shotcrete machines adopt reasonable power configuration to reduce energy consumption. When completing the same workload, they can save about 35% of electricity.

Stable and durable: high-quality materials and advanced manufacturing processes are used, and key components are sturdy and durable. For example, the rotor body and other components are made of high-strength materials, which can withstand long-term and high-intensity workloads, reduce equipment failures and maintenance frequency, and extend the overall service life of the equipment. At the same time, the equipment runs stably. For example, the V-belt transmission method makes the operation smooth and quiet, and has an overload protection function.

4. Wide application fields

Mine tunnels: In coal mines, metal mines and other mining operations, it is used for tunnel support spraying concrete operations to enhance the stability of the tunnel and prevent rock collapse.

Tunnel culverts: Whether it is a highway tunnel, a railway tunnel, or an urban subway tunnel, a water diversion culvert, etc., the shotcrete machine can be used to spray concrete to form a support layer to ensure the structural safety of the tunnel and culvert.

Construction engineering: In the construction of high-rise buildings, it can be used for concrete spraying on walls and floors to improve construction efficiency and quality. It can also be used for the repair and reinforcement of building structures, such as bridges, seawalls, chimneys and other structures damaged by chemical corrosion, fire, earthquake, overload, etc.
Geotechnical engineering: In geotechnical engineering such as slope protection, dam reinforcement, deep foundation pit wall protection, etc., spraying concrete can enhance the stability of the soil and prevent soil erosion and landslide.
Other fields: Spraying machines can also play an important role in the spraying or repair of refractory materials for the lining of various industrial furnaces, as well as the transportation and spraying of soil in slope protection and greening construction.
With its diverse types, sophisticated structural design, significant performance advantages and wide application fields, spraying machines have become an indispensable and important equipment in engineering construction, providing strong support for promoting efficient and high-quality construction of various projects.