Concrete Scarifier Machine

Concrete Scarifier Machine is one of the main types of asphalt pavement maintenance machinery. One of the main equipment for asphalt concrete pavement maintenance is mainly used for excavation and renovation of asphalt concrete surface such as roads, town roads, airports and freight yards. Also known as the names of floor scarifier,concrete milling machine, asphalt milling machine,It can be used to remove road surface crowding, oil waves, netting, rutting and other defects. It can also be used to excavate road pits and grooves, as well as the grinding of cement pavements and the milling of surface faults.

Milling damaged old laminates with concrete scarifier machine is the most economical modern maintenance method due to its high efficiency, simple construction process, easy milling control, easy operation and flexibility, and good maneuverability. Milled oil materials can be directly recycled and used, and are therefore widely used in urban municipal roads and highway maintenance projects.

Working Principle:

The general concrete scarifier machine consists of an engine, a frame, a milling rotor, a milling depth adjustment device, a hydraulic component, a collecting conveyor, a steering system, and a braking system.

The milling rotor is the main working part of the scarifier machine. It consists of a milling rotor shaft, a tool holder and a cutter head. It is directly in contact with the road surface and works by its high-speed rotating milling cutter to achieve milling. The milling machine is provided with an automatic leveling device for milling the rotor side cover as a milling reference surface, and controlling two positioning hydraulic cylinders to keep the given milling depth constant.

The hydraulic system is used to drive the rotation of the milling rotor, the whole machine to walk, the auxiliary device to work, etc., generally the closed hydraulic system with independent multi-pumps, which does not interfere with each other during operation and has high reliability.

Some concrete scarifier machine are equipped with tilt adjusters to control the inclination of the rotor. Generally, large scarifier machines have aggregate conveyors consisting of conveyor belts and aggregates, which concrete the milled bulk material and the vehicle is transported to a randomly-moving carrying vehicle, and the height of the transport arm can be adjusted and swung left and right to adjust the unloading position.

When the specifications and models of the concrete scarifier machine are different, the structure and arrangement are sightly different, but the basic working principle is the same or similar. Scarifier machine power transmission route: engine→hydraulic pump→hydraulic motor, hydraulic cylinder→working device.

Concrete Scarifier Machine Features:

1. Milling the road surface with a concrete scarifier machine can quickly and effectively treat road surface diseases and keep the road surface flat.
2. The road renovation project uses the milling process to maintain the horizontal elevation of the original road surface. The milling process can remove the damaged road surface, fill the original space with new materials, and after compaction, it is equal to the original road surface to maintain the original horizontal elevation of the road surface. This makes the road load passing through the viaduct or overpass culvert not to the bridge body. The impact load is generated and the bridge and culvert are unchanged by the elevation.
3. Ensure a good combination of new and old pavement materials and improve their service life. The milling process can make the side and bottom of the packing pit uniform and uniform in depth, forming a tooth-shaped geometric surface that is easy to be combined with new and old materials, so that the service life of the new road surface after the renovation is greatly improved.
4. It is conductive to the recycling of old pavement materials. Since the cutting depth can be grasped, the milled material is not only clean and regular small particles, but can be recycled on site or in a fixed stock yard without further crushing, which greatly reduces the construction cost and is also an environmental protection measure.

Operating Procedures:

1. The floor scarifier must be operated by a special person. The operator must undergo strict technical training before going to work. Familiar with the structure, working principle, performance and operating procedures of each system and device of the milling machine to avoid mechanical equipment failure and personnel safety accident.
2. The machine must be tested for no-load test on each system, device and whole machine before use. After confirming normal, it can enter normal operation.
3. The machine must be in a walking state before working, and then the milling rotor rotates and slowly descends and gradually enters the working state. This sequence of operations cannot be reversed, otherwise it will damage the machine or cause a safety hazard.
4. Technical preparation before the operation.

• Understand the road surface and traffic conditions at the construction site, technical requirements, etc.
• Check that the steering system and brake system are flexible and reliable.
• Check the hydraulic system for leaks and whether the hydraulic oil is sufficient.
• Check whether the milling drum head is complete, intact and securely installed. The milling drum safety cover has been installed well, complete and effective.
• Prepare to start the engine. Then let the engine idle and warm the car, at this time should check the display value of each instrument and engine operation. When the engine cooling water temperature reaches 60 °C, the machine can start and enter the job site.

5.Technical requirements in the operation.

• When milling, the clutch should be separated first, and then the clutch should be combined after the machine is engaged.
• Slowly lower the milling drum to the milling depth in the first speed or stop.
• The maximum cutting depth of the one-time milling asphalt concrete pavement shall not exceed the specified value of the machine.
• It is strictly forbidden to use high-speed work when milling hard road surface to avoid damage to the cutter head.
• It is strictly prohibited to shift gears during milling operations. The main oil pump operating arm should be placed in the “neutral position” when shifting gears.
• During the milling operation, the working status of each indicator light and instrument should be observed at any time. The operator must not leave the driving position, otherwise the milling drum must be lifted.

6.Technical work after the operation.

• The machine should be placed in a flat and safe place after operation. When the machine is parked, the milling drum is lifted, the milling gear is disengaged, the engine is turned off after 5 minutes of idle running, and the parking brake is applied to the concrete scarifier machine.
• Open the milling drum safety cover and clean it thoroughly. Check the milling cutter and replace it if it is damaged.
• Perform daily routine maintenance operations on the engine and machine in accordance with the warranty procedures or the technical requirements of the instruction manual.

Shotcrete Equipment

The shotcrete equipment is widely used in mines, tunnels, culverts, subways, hydropower projects, underground engineering and coal-fired high-altitude mine roadway shotcrete construction operations; various types of industrial furnaces, furnace lining refractory spray molding or repair; various slope protection greening during construction, soil transport and spraying. The machine can be used for both tidal spray and dry spray and various fiber jet operations. 

Machine Composition:

The shotcrete machine is used in dry spray, tidal spray and wet spray concrete. It has the characteristics of reasonable structure, stable performance, convenient operation and long service life. It is suitable for tunnel culvert underground engineering and coal mine, moorland, mine roadway and jetting. Concrete construction work. This kind of machine is mainly composed of five parts: mechanical power system, feed feeding system, pressure air conveying system, quick-setting agent metering and adding system and electric control system.

Use of the Process Should be Noted:

The shotcrete machine is an advanced engineering construction equipment. Its production incorporates many high-tech technologies, so it is very popular among consumers. This kind of machine is also very simple in operation. If you don’t have professional training, you can get started, so don’t worry about the danger caused by not operating. Today, I will tell you some problems that should be paid attention to during the use of the machine to extend the service life of the machine.

1. During the operation of the machine, it is strictly forbidden to clean the material cavity with a long stick to avoid serious accidents causing injury.
2. It is strictly forbidden to wash the electric control box, vibration motor and main motor with water when cleaning the machine, so as to avoid short circuit and affect the normal operation of the machine.
3. When used in underground coal mine production, the parts in the safety standard list of the safety standard shall not be replaced by the user.
4. The machine is used to prevent long and large objects such as steel bars and iron plates from entering the rotor cavity during use to prevent accidents caused by the machine.

When the shotcrete machine is working on shotcrete, if there is no material to be sprayed out at the nozzle, thee are usually two situations:

First, when the pipe is to be blocked, the conveying pipe is not blocked, but the conveying condition inside the conveying pipe is deteriorated. At this time, the vibrator should be closed, and the mixing in the conveying pipe. The material is injected and the pressure in the pipeline is restored to the normal working range and then turned on.

Second, the pipe is blocked, the pipeline has been blocked, then the machine should be shut down, and then the pipeline should be cleaned. When the pipeline is confirmed to be fault-free, please restart the machine to resume normal operation.

Standard Operating Specifications:

The preparation of the operation:

1. Check whether the shotcrete machine is in good condition, and the power supply is running at no load. The friction plate is fastened and no air leakage is allowed.
2. Connect the fengshui pipeline, open the air supply and water supply valves, check the wind pressure and water pressure, and check whether the feng shui pipeline is leaking, leaking, and unblocked. If there is any problem, deal with it in time.
3. Check if the delivery pipe is damaged and replace the delivery pipe when there is damage.
4. Rinse the rock face with high-pressure water before spraying. ( The loose rock and expansive surrounding rock are strictly prohibited to wash the rock face with high-pressure water, and the crushed wind can be used to remove rock powder and gravel ).

Pay Attention to During Routine Maintenance:

1. Shotcrete accessories–sealing plate and rotor lining are the key parts of the shotcrete machine, we must pay attention to their maintenance, so as to ensure that there is no failure in the work.
2. The anti-adhesive cavity and the discharge elbow have anti-stick function, generally do not stick during work, but the rotor should be opened after the end of each shift, and the elbow should be inspected and cleaned.
3. Always pay attention to the maintenance and maintenance of the sprayer reducer:
4. After every shift, the mixing materials such as the mixing material on the outer surface of the reducer should be cleaned up in time.
5. Always observe the oil mark. When the oil is insufficient, it should be filled in time.
6. The oil should be replaced after 250 hours of work ( about three months ).
7. The rotor square shaft bearing grease should be filled in time ( the oil filling port on the top of the square shaft ). Every 8 hours of the shotcrete machine needs to be shut down for maintenance and repair to ensure that the spray rotating boom is running normally; when the spray stop time exceed 10 minutes, the spray gun and the slurry pipe should be cleaned in time, and the disassembly, cleaning, installation and commissioning should be strictly carried out according to the instructions. Use a spray gun to maintain the spray gun’s performance.

Small Water Well Drilling Rig for Sale in Kenya

The small water well drilling rig is mainly used for earthing, soft rock such as limestone. The advantage is that the drilling is fast, the soil layer can drill 30 to 40 meters in one hour, which is convenient to move and the price is low.

Our new customer is from Kenya. On September 24th, he sent an inquiry on our company website. Our website staff let the sales manager contact our customers. The customer is not very familiar with the rig, but our staff is very professional. As long as the customer has problems, we will answer the questions at any time, so that the customers trust us. When the customer solved all the problems, after eight days, of course, it was very refreshing. Our customers have a very high rating for us, saying that our sales manager is very patient and attentive and trusts our company YG Machinery. Below I will attach the machine and parameters purchased by the customer. If you need, please contact us.

Daily Maintenance:

1. The motor part of the rig should be handled with care to avoid rain and splashing water.
2. The motor wire connector can not touch the power.
3. Always check if the wire rope is replaced.
4. Before and after use, the drill pipe wire should be lubricated with oil to place it in the rain shelter to avoid rust.
5. The motor can not be overloaded for a long time.
6. Check the circuit and transformer insurance when the motor does not turn.

Industrial Hose Pump

Product Description:

Hose pump belongs to the peristaltic pumps category. The peristaltic pump is a kind of rotor type positive displacement pump, and its working principle is similar to that of the digestive tract in the peristaltic manner of conveying gas, solid and liquid three-phase medium.

The designer and user of the hose pump is primarily concerned with its ability to deliver highly abrasive media. It has no valve and no seal. The only part that comes into contact with the medium is the inner cavity of the rubber hose. The rotor of the compression hose is completely independent of the medium.

Uniqueness of the Hose Pump:

No other pump has better self-priming ability than the hose pump, it can produce a perfect vacuum to absorb liquid; It can transport gas-containing liquid, foam liquid without gas resistance; The shear sensitive medium is also a strong item; It is a natural metering pump regardless of the fixed displacement per revolution and independent of the outlet pressure.

Industrial Hose Pump for Sale in YG:

The industrial hose pump absorbs the advanced technology and develops a new type of multi-functional, multi-purpose industrial pump. It mainly consists of a pump body, slewing frame, squeeze wheel, recovery wheel, reinforced hose, and drives system.

The reinforced hose is arranged in a U shape in the pump body. When the slewing frame drives the squeezing wheel to rotate, the hose is elastically deformed by the backpressure of the squeezing wheel, and negative pressure is sucked into the suction port to suck the slurry, and the push slurry is pushed through the squeezing wheel.  The material is discharged from the discharge port to form a pressure transfer of the slurry. It can be used in construction, mining, food, paper, ceramics and other suitable fields for long-distance conveying, metering pumping, pressure injection ( irrigation ), material conveying and spraying, etc. It completely eliminates the traditional pump impeller and shaft the sealed operation mode has great advantages for medium transportation with large viscosity, high corrosivity, and large fluid impurities. It is a completely different principle from the traditional pump and has a wide application range.

The Hose Pump Working Principle:

The transmission drives the rotor to rotate. The two pressure rollers distributed on the rotor at 180°continuously roll along the hose inside the pump to crush the hose. Under the force of its own elasticity and the guide roller, the tube is restored to its original state. At this time, a high vacuum is generated in the tube to suck the fluid material into the lumen, and the fluid entering the lumen is discharged from the tube under the action of the accompanying pressure roller. As a result of this cycle, the material is continuously sucked in and discharged.

Application Area:

1. Chemical industry, various anti-corrosion pastes, and inorganic salt materials.
2. Oil, drilling, water treatment, mud, lime slurry.
3. Filling materials for mining and metallurgy, slurry transportation.
4. Food industry, oil materials, and beverages, paste material transportation.
5. Paper industry, pulp, and sulfur transportation.
6. Construction industry, cement mortar, foam concrete production line, roofing house foam light fluid materials; tunnel application, subway construction application, pumping pulp, food emulsion pumping, floor reinforcement construction, wall spraying mortar construction, pumping mud and other working conditions.
7. Paint, titanium dioxide, carbon dioxide, and other materials transport.

Advantages of the Hose Pump:

1. It is easy to install, simple to operate and can run continuously for a long time.
2. The pump to send a variety of fibers and slurry, shear sensitivity, the abrasive or gas-liquid-solid mixture is a perfect choice, the material diameter is greater than ≤4-6mm.
3. It can easily pump the internal fluid erosion, high viscosity, high-density fluid, paste fluid.
4. The hose pump does not need to replace the seals, gaskets, impeller rotors, stators or traditional various pump components.
5. The movement of the pump is divided into positice and clockwise rotation without backflow and siphon phenomenon, and has the function of the shut-off valve; reverse, the fluid can be sent out and sucked back.
6. The pumping fluid is proportional to the speed and can be accurately measured.

Installation Precautions:

1. The pump should be placed smoothly to reduce vibration and reduce noise.
2. There is a flexible or rigid short section ( about 80~100cm) between the outlet flange of the hose pump and the pipe connection to replace the hose.
3. The installation height of the pump can be above the material plane, and there is no need for auxiliary pipelines and starting facilities, but the height difference should not exceed 20 meters.
4. Under the condition that the conveying medium has high viscosity, large particles, easy deposition, and poor fluidity, the pump is generally installed under the material.
5. When using the pump, care should be taken to minimize the elbow ( especially the right angle elbow ).
6. The inlet and outlet of the pump are not allowed to install a check valve.
7. The pump outlet of the hose pump should be equipped with a pressure gauge to monitor the pump’s movement.
8. The inlet and outlet of the pump are in the same direction of the pump, and the inlet and outlet of the pump are interchangeable, which is determined by the user according to the piping and the actual situation.
9. Electrical installation should be equipped with positive and negative buttons for maintenance, pipe replacement, and self-cleaning.