Product Description

Mobile Silent Pumping Station JQJY  :

The silent type diesel engine water pump unit is a series of products developed by introducing and absorbing foreign low-noise diesel engine fire water pump technology. Silent diesel water pump units are widely used in places with strict environmental noise requirements such as post and telecommunications, hotel buildings, entertainment venues, hospitals, shopping malls, industrial and mining enterprises, as emergency fire fighting and domestic water supply.

Characteristic :
 

1. The noise index of one-meter ranging can reach 65dB(A)-85dB(A), and the unit can be used without power reduction;
2. The overall design of the silent type diesel water pump unit is compact in structure, small in size, and novel and beautiful in appearance;
3. Vibration isolation design, high-performance shock absorbable are used between the diesel engine and generator and the public base to reduce noise sources;
4. The sound insulation cover made of high-efficiency sound-absorbing materials has strong sound absorption and sound insulation ability;
5. The use of impedance and sound-absorbing CZPT muffler greatly reduces the noise when exhaust gas is discharged;
6. High-efficiency noise-reducing multi-channel air intake and exhaust, air intake and exhaust channels to ensure sufficient power performance of the unit;
7. Large-capacity fuel tank; 8. Special quick-opening cover plate, convenient for maintenance.

Product condition

1. Altitude above sea level: ≤2500 meters
2. Ambient temperature: -25~55ºC
3. Relative air humidity: 9-95%
4. Earthquake intensity: 7 degrees

Technical requirements:

Driver: electric start diesel engine, with fuel gauge and engine oil warning device;
Pump:
(1) You just need to put the tube in the place for pumping, quick and convenient.
(2) The integrated mechanical seal, with independent lubricant and cooling part, in 2bar pressure;
(3) The center offset shall not be greater than 0.003mm;
(4) The spindle is in stage-less design, and the diameter shall not be less than 85mm, to reduce spindle center offset and prolong life;
(5) The pump will run with 2-end robust support, in a mechanical seal, to ensure that the bearing will not contact the media.
The pumping capability: common plastic bags, textile bags, will not jam in the pump;
Pipes: metal bracket and rubber tubes, quick joints; (length required by users)
Pump vehicle: 4-wheel or 2-wheel steel bottom;
Controller: panel control.

Technical parameters:

Flow	up to 1500 m3/h
Head	up to 100 m
Speed	up to 3000 RPM
Power	up to 350 kW
Caliber	up to 350 mm
Noise	3 meter /85db

Diesel engine operation steps:
 

1. Connect the battery, pay attention to the positive and negative poles. The positive pole is connected to a terminal of the starter motor, and the negative pole is connected to the body; (Note: the battery needs to be charged after being placed for a long time to use!!!)
2. Inject coolant (water) into the water tank. If the ambient temperature is below zero, a certain proportion of antifreeze must be added to the radiator;
3. Fill the diesel engine with engine oil (special for diesel engines), and add it above the scale line of the engine oil scale. It is strictly forbidden to start the engine without adding engine oil;
4. Add diesel to the fuel tank, and restart after the first start or stop for a long time. You need to repeatedly press the hand pump on the diesel engine to exhaust the air in the fuel system;
5.  Check the oil level of the lubricating oil, the level of the coolant, the amount of fuel, check the oil supply, lubrication, cooling, and other systems of the diesel engine for oil leakage and water leakage, and check whether the electrical circuit has broken skins and other electric leakage hazards. , Whether the electrical circuit of the grounding wire is loose, whether the connection between the unit and the foundation is firm, etc. (See the manual in the diesel engine toolbox for details)

Start, running and stop 

Start

1. First of all, pour water into pipes, to make the pump and inlet pipe filled with water. The pipes shall be sealed, no air leaked. (no-water inside start is forbidden) 
2. Close globe valve and cock on outlet pipe, to reduce start currency.
3. Rotate the rotor by hand, lubricate the bearing and check the pump impeller, seal the ring, if it cannot rotate, you shall not start.
4. Try to start, motor rotation direction shall be as same as the arrow direction on the pump. 
5. When the rotor works normally, open gradually the outlet globe valve, adjust for the work conditions required.

Running

1. Observe the reading in meters, keep it running around the flow and head shown on the nameplate.
2. Regularly check, motor currency value shall not exceed rated currency value.
3. Pump bearing temperature shall not exceed 75ºC, and shall not be 35ºC higher than ambient environment.
4. To start, loosen the stuff cap. Adjust later when started.
5. In case of fragile component abrasion, replace in time.
6. When any abnormal happens, immediately stop and check.

Stop

1. Close the globe valve on the outlet pipe, close the vacuum gauge cock.
2. Stop the motor, and close the pressure cock.
3. In Winter, drain the liquid in the pump completely to avoid frozen cracks.
4. When you will not use it for a long time, uninstall the pump, clean, and lubricate
 
 Troubleshooting 
 

Fault	Cause	Solution
The pump cannot suck water, pressure gauge & vacuum gauge vibrating	1. Insufficient water pouring  2. Leak between pipe and meter  3. Suction is too high	1, check a leak in the bottom valve.  2, Tighten the leaked part  3, reduce suction
The pump cannot suck, high vacuum is shown in the vacuum gauge	1, bottom valve closed or jammed  2, Too great water suction resistance  3, filter jammed	1, check bottom valve 2, replace water suction pipe 3, clear off the filter
Pressure gauge works, no water outcome	1. Great outlet water pipe resistance 2. Wrong rotation direction  3. Outlet pipe valve closed 4. impeller jammed	1. check or shorten water pipe  2, check the motor, adjust  3, open the valve and clear off the impeller
Cannot reach designed flow	1. air sucked  2. Water level drops, submerged depth is not enough  3. impeller jammed  4. rotor torn and worn	1, check leak part and clear off  2, prolong water inlet pipe, increase the submerged depth 3, uninstall and clear off  4, replace seal ring
Great pump power consumption	1. Stuff tightened, overheated  2. Great flow  3. Collision between rotor and case  4. Pump shaft bearing abrasion  5. Pump shaft misplaced	1. loosen slightly 2. reduce globe valve opening 3. adjust  4. replace bearing  5. replace or adjust
Great pump vibration	1. impeller partially jammed  2. impeller damaged  3. little flow  4. non-concentric between pump shaft and motor. 5, bearing damaged  6, gas etching	1. Uninstall and clear off  2, replace  3, increase opening  4, adjust 5, replace   6, change suction inlet position

 
Borra Technology Co., Ltd.

Borra Technology co., Ltd., founded in 1995, owns a top-rank design, production, sales, and service team, and modern production lines, to manufacture various self-priming pumps, movable diesel pumps, diesel Self-Priming dirt drain pumps, diesel fire pumps units, diesel mini-pumps.

Certificate : 

Services:

1. One year or 1000 working hours guarantee of the whole machine except for wear parts;
2. Technical support by email the whole day;
3. Calling service;
4. User’s manual available;
5. Installation CZPT for clients from both China and abroad;
6. Maintenance and replacement service;

FAQ:

Q1: Are you a reliable company?
A1: Bora is located in Wenzu, a beautiful city in ZHangZhoug Province, China. we have many years of manufacturing experience,
we can supply all types of fire protection solutions, Drainage and sewage solution, and other pump products.
We have an independent factory and trade office.

Q2: how to deliver the portable diesel water pump
A2: We can offer our equipment by containers or bulk ship.

Q3: How to pay for the portable Diesel water pump?
A3: We can accept T/T, L/C and soon

Q4: why choose borra company?
A4: We have an independent factory and foreign trade office. so we can design high-quality portable generators
and water pumps according to clients requirements and our price is reasonable. 

Contact Us
If you are interested in our products or have any questions about our products, we are very honored to serve you. 
 

What Are the Advantages of a Splined Shaft?

If you are looking for the right splined shaft for your machine, you should know a few important things. First, what type of material should be used? Stainless steel is usually the most appropriate choice, because of its ability to offer low noise and fatigue failure. Secondly, it can be machined using a slotting or shaping machine. Lastly, it will ensure smooth motion. So, what are the advantages of a splined shaft?
Stainless steel is the best material for splined shafts

When choosing a splined shaft, you should consider its hardness, quality, and finish. Stainless steel has superior corrosion and wear resistance. Carbon steel is another good material for splined shafts. Carbon steel has a shallow carbon content (about 1.7%), which makes it more malleable and helps ensure smooth motion. But if you’re not willing to spend the money on stainless steel, consider other options.
There are 2 main types of splines: parallel splines and crowned splines. Involute splines have parallel grooves and allow linear and rotary motion. Helical splines have involute teeth and are oriented at an angle. This type allows for many teeth on the shaft and minimizes the stress concentration in the stationary joint.
Large evenly spaced splines are widely used in hydraulic systems, drivetrains, and machine tools. They are typically made from carbon steel (CR10) and stainless steel (AISI 304). This material is durable and meets the requirements of ISO 14-B, formerly DIN 5463-B. Splined shafts are typically made of stainless steel or C45 steel, though there are many other materials available.
Stainless steel is the best material for a splined shaft. This metal is also incredibly affordable. In most cases, stainless steel is the best choice for these shafts because it offers the best corrosion resistance. There are many different types of splined shafts, and each 1 is suited for a particular application. There are also many different types of stainless steel, so choose stainless steel if you want the best quality.
For those looking for high-quality splined shafts, CZPT Spline Shafts offer many benefits. They can reduce costs, improve positional accuracy, and reduce friction. With the CZPT TFE coating, splined shafts can reduce energy and heat buildup, and extend the life of your products. And, they’re easy to install – all you need to do is install them.

They provide low noise, low wear and fatigue failure

The splines in a splined shaft are composed of 2 main parts: the spline root fillet and the spline relief. The spline root fillet is the most critical part, because fatigue failure starts there and propagates to the relief. The spline relief is more susceptible to fatigue failure because of its involute tooth shape, which offers a lower stress to the shaft and has a smaller area of contact.
The fatigue life of splined shafts is determined by measuring the S-N curve. This is also known as the Wohler curve, and it is the relationship between stress amplitude and number of cycles. It depends on the material, geometry and way of loading. It can be obtained from a physical test on a uniform material specimen under a constant amplitude load. Approximations for low-alloy steel parts can be made using a lower-alloy steel material.
Splined shafts provide low noise, minimal wear and fatigue failure. However, some mechanical transmission elements need to be removed from the shaft during assembly and manufacturing processes. The shafts must still be capable of relative axial movement for functional purposes. As such, good spline joints are essential to high-quality torque transmission, minimal backlash, and low noise. The major failure modes of spline shafts include fretting corrosion, tooth breakage, and fatigue failure.
The outer disc carrier spline is susceptible to tensile stress and fatigue failure. High customer demands for low noise and low wear and fatigue failure makes splined shafts an excellent choice. A fractured spline gear coupling was received for analysis. It was installed near the top of a filter shaft and inserted into the gearbox motor. The service history was unknown. The fractured spline gear coupling had longitudinally cracked and arrested at the termination of the spline gear teeth. The spline gear teeth also exhibited wear and deformation.
A new spline coupling method detects fault propagation in hollow cylindrical splined shafts. A spline coupling is fabricated using an AE method with the spline section unrolled into a metal plate of the same thickness as the cylinder wall. In addition, the spline coupling is misaligned, which puts significant concentration on the spline teeth. This further accelerates the rate of fretting fatigue and wear.
A spline joint should be lubricated after 25 hours of operation. Frequent lubrication can increase maintenance costs and cause downtime. Moreover, the lubricant may retain abrasive particles at the interfaces. In some cases, lubricants can even cause misalignment, leading to premature failure. So, the lubrication of a spline coupling is vital in ensuring proper functioning of the shaft.
The design of a spline coupling can be optimized to enhance its wear resistance and reliability. Surface treatments, loads, and rotation affect the friction properties of a spline coupling. In addition, a finite element method was developed to predict wear of a floating spline coupling. This method is feasible and provides a reliable basis for predicting the wear and fatigue life of a spline coupling.

They can be machined using a slotting or shaping machine

Machines can be used to shape splined shafts in a variety of industries. They are useful in many applications, including gearboxes, braking systems, and axles. A slotted shaft can be manipulated in several ways, including hobbling, broaching, and slotting. In addition to shaping, splines are also useful in reducing bar diameter.
When using a slotting or shaping machine, the workpiece is held against a pedestal that has a uniform thickness. The machine is equipped with a stand column and limiting column (Figure 1), each positioned perpendicular to the upper surface of the pedestal. The limiting column axis is located on the same line as the stand column. During the slotting or shaping process, the tool is fed in and out until the desired space is achieved.
One process involves cutting splines into a shaft. Straddle milling, spline shaping, and spline cutting are 2 common processes used to create splined shafts. Straddle milling involves a fixed indexing fixture that holds the shaft steady, while rotating milling cutters cut the groove in the length of the shaft. Several passes are required to ensure uniformity throughout the spline.
Splines are a type of gear. The ridges or teeth on the drive shaft mesh with grooves in the mating piece. A splined shaft allows the transmission of torque to a mate piece while maximizing the power transfer. Splines are used in heavy vehicles, construction, agriculture, and massive earthmoving machinery. Splines are used in virtually every type of rotary motion, from axles to transmission systems. They also offer better fatigue life and reliability.
Slotting or shaping machines can also be used to shape splined shafts. Slotting machines are often used to machine splined shafts, because it is easier to make them with these machines. Using a slotting or shaping machine can result in splined shafts of different sizes. It is important to follow a set of spline standards to ensure your parts are manufactured to the highest standards.
A milling machine is another option for producing splined shafts. A spline shaft can be set up between 2 centers in an indexing fixture. Two side milling cutters are mounted on an arbor and a spacer and shims are inserted between them. The arbor and cutters are then mounted to a milling machine spindle. To make sure the cutters center themselves over the splined shaft, an adjustment must be made to the spindle of the machine.
The machining process is very different for internal and external splines. External splines can be broached, shaped, milled, or hobbed, while internal splines cannot. These machines use hard alloy, but they are not as good for internal splines. A machine with a slotting mechanism is necessary for these operations.