Also known as flow stabilizer compensator, flow regulator, negative pressure tank.
Negative pressure tank PRO/E diagram
Negative pressure tank CAD dimensions
Role: to achieve pressure stabilization, flow regulator function, no negative pressure function. Eliminate secondary air pollution
Vacuum suppressor:
Also known as the vacuum compensator, is an important part of the non-negative pressure water supply equipment, which is installed in the equipment of the non-negative pressure tank, can eliminate the equipment pump in the water inlet to produce a vacuum, so that the equipment inlet has no negative pressure, so that the equipment can be directly connected to the municipal pipeline network directly to the water supply.
Vacuum suppressor PRO/E diagram
Vacuum suppressor CAD diagram
"A lip-type double-seal vacuum suppressor, which solves the existing vacuum suppressor sealing is not tight, low-pressure leakage problem. It is in the center of the flange hole through the thread and the sleeve structure body connection, the sleeve structure body hole through the thread and the boom support seat connection, the upper part of the boom support seat is equipped with ventilation holes, the center of the boom support seat mounting guide sleeve, the boom through the guide sleeve and the float connected to the lower part of the outer side of the boom support seat with an annular groove, the lip sealing ring is set in the annular groove, the lip sealing ring on the outer side of the lower end of the body and sleeve structure with a conical surface match. The outer side of the lip seal fits the conical surface of the lower end of the sleeve structure, the inner side of the lower end of the boom support seat is a curved surface belt that fits the float, and there are two curved surface belts that fit the float on the inner side of the lip seal. There is a ventilation hole on the side wall of the sleeve structure body, and there is an air filtration film on the top opening of the sleeve structure body and the ventilation hole on the side wall. The lip-type double-seal vacuum suppressor has a simple structure, easy installation, reliable sealing, and sensitive make-up air."
>Stainless Steel Water Pumps
Grandford Water Pumps
Stainless Steel Water Pumps PRO/E Diagram Stainless Steel Water Pumps Exploded Diagrams
1, Vertical Pipeline Multi-stage Centrifugal Pumps
2,
CR series (CR,CRI,CRN&CRT) are non-self-priming, vertical pipeline multi-stage centrifugal pumps. Its pipeline structure ensures that the pump can be directly installed in the import and export on the same level and the same diameter of the horizontal pipeline system, this design makes the pump structure and pipeline more compact. The pump body is available in stainless steel 304, 316 and titanium alloy. Vertical mounting is standard (horizontal mounting is available for special requirements).
2, MG motor
More perfect match with the pump body, with low noise, high efficiency, maintenance-free.
v "Double-locked" drive-end bearings enable high inlet pressures to be withstood;
v Bearing "lubrication" with high-quality grease greatly reduces maintenance costs;
v Motor bearings are replaced with 63xx-C4 or angular contact bearings. 63xx-C4 or angular contact bearings allow longer bearing life compared to standard motors;
3. Support flange
Can be adapted to any standard motor, the support flange has ball bearings,
ensuring that the tapered bearings are undamaged, allowing high inlet pressures, and maintenance free.
4, assembled shaft seal
Balanced assembled shaft seal, all parts assembled together, no axial movement,
No wear to shaft and rubber parts. It is characterized by quick replacement, easy installation and safe operation.
5. Laser welded impeller
Adopts the most advanced tight laser full welding technology,
eliminates spot welding, ensures the high strength and high efficiency of the impeller.
6、Pump head
Cast pump head:
v CRI/CRN all stainless steel
v Attachable sensors
v No grooves (corrosion)
v No welds (corrosion)
7、Base(CRN)
Cast base:
All stainless steel, no welds and grooves (corrosion),
Optimum adaptability to line stress, different line connections,
Optimum efficiency and air handling.
8, extended coupling
When the mating motor is larger than 7.5 kW (about 35 kg),
the coupling will be extended, to ensure that the replacement of the shaft seal does not need to move the motor,
to ensure that the maintenance of the convenient and quick.
9, reliable dry rotating protection device
Optional patented design of dry rotating protection device LiqTec,
Greatly reduce the failure caused by the pump dry rotating, easy to install,
Reliable operation, low cost.
10, outer cylinder seal
O-ring seal makes the pump insensitive to pressure pulsations and temperature fluctuations.
3.10 rotating assembly
Multi-stage impeller locking design minimizes the gap between each stage of the impeller, improving the hydraulic efficiency of the impeller.
11. Flexible connection port form
Multi-purpose flange:
DIN / JIS / ANSI all together
Elliptic flange:
Inner RG thread
PJE (Victaulic)
FLEXIClamp
Base:
1.movable connection flange for DIN, JIS, ANSI or other standard flanges.
2. When replacing the existing vertical pump, precise gaskets are provided so that the new CR pump can be installed without changing the height of the pipe.
3. The inlet and outlet are each provided with a pressure measurement point for differential pressure measurement, and also serve as drain ports, making it easy to arrange the drain ports according to the site.
4. The static bottom bearing is screw-fixed, easy to change, and positioned very low to ensure adequate water lubrication.
5. Electrophoresis treatment surface, the protective film completely penetrate into the cast iron, than the general spray paint or plating corrosion-resistant, to ensure that the perennial use of rust (pump head, motor using the same advanced technology)
Pump casing:
1. Shaft rotating bearings screw-fixed, easy to switch;
2. Shaft with the first stage impeller instructions, easy to install.
3. Impeller and shaft are fixed by stainless steel conical bolts for easy disassembly and installation, single-stage impeller head can be selected according to the need, impeller mouth ring is protected by easy-to-change stainless steel neck ring.
4. Impeller thickness is small, to achieve the same head, the height of the pump is reduced by an average of 20% impeller cavity thickness is reduced, the pump performance and efficiency has been improved, the same motor power can be done
5. Larger water capacity. Depending on the working point, 30% higher than other brands on the market.
6. The material of support bearing (axial) in the impeller cavity is synthetic graphite, which has good performance of anti-dry rotation and anti-vibration.
7. Radial bearings in the impeller chamber have a combination of bronze/synthetic graphite on the stationary chamber and tungsten carbide on the rotating shaft, with hard and soft surfaces in contact to ensure maximum wear resistance.
10. The impeller chamber is provided with a stationary stainless steel sealing ring, a floating Teflon sealing ring at the impeller mouth ring to prevent water backflow, and a sealing ring to protect transportable solid particles from rotating and abrading the chamber as particles rotate in the impeller chamber.
11. Standard full head impeller can be bundled with half head impeller through bundling strips to flexibly meet customer requirements for head.
12. The pump base and pump head are connected with the impeller chamber by self-tightening screws, which is easy to disassemble and install.
13. The shaft, which is related to the balance of the pump, is processed by large-scale CNC machine center, and the material is 316 stainless steel, which ensures that the force is even and corrosion-resistant in use, and the impeller is made of stainless steel with laser-welded joints, which is light in weight and high in efficiency.
Pump head:
1. The pump head and pump casing cavity are fixed by self-locking screws, which can be easily fixed and easy to disassemble.
2. After the seal is fixed the grinding surface is completely lubricated by water after exhausting. And is fixed under the sealing surface.
3. Pump head drain hole can be connected to the drain, and sensor mounting holes, with a high-temperature safety exhaust valve.
4. Pump head and motor base are separated for easy maintenance.
Motor seat:
1. The coupling guard can be inserted into the cooling water pipe for cooling rinsing and cooling down when using the double seal.
2. The seal is equipped with a positioning fork to adjust the seal height for precise installation.
Seals:
1. Rolled seal, easy to install and adjust the position.
2. The assembled shaft seal has a variety of material forms to choose from for different applications.
3. Spacer coupling, easy to change.
Motor:
1. High efficiency motor with built-in thermal protector. Heavy duty bearing system. Small friction system to ensure long motor life, patented motor fan design, very low noise.
2. The motor is equipped with a lifting ring to facilitate the movement of heavy weight pumps.
Stainless steel pipe valve
Part name: stainless steel pipe valve
Part specifications: DN50-DN300
Flow rate: 1.0m/s-2.0m/s
Flow rate: 3.0m3/h--120.0m3/h
Flow rate: 3.0m3/h--120.0m3/h
Flow rate: 3.0m3/h--120.0m3/h 120.0m3/h
Component material: SUS304 stainless steel
First-class welding technology, coupled with high matte stainless steel surface treatment technology, to ensure that the equipment
Internal and external consistency
----- Zhonghuo water supply equipment quality. --- A symbol of the high quality of Nakahori water supply equipment
Pneumatic pressure tank
Can effectively smooth out pressure fluctuations in the water system and reduce the frequency of starting and stopping the pump.
The internal diaphragm structure of the tank ensures that the water does not come into contact with the wall of the tank, so there is no rusting inside the wall of the tank, no condensation outside, and the service life is greatly extended.
The rubber diaphragm can be stretched more than 200,000 times and can be used for a long time after inflation.
Can effectively smooth out the pressure fluctuations in the water system, reducing the frequency of starting and stopping the pump.
Diaphragm for food grade natural rubber diaphragm can be used in the drinking water system.
Effectively prevent water hammer phenomenon.