Presentation on theme: "1 DulcoFlex DulcoFlex Pumps. 2 DulcoFlex AGENDA Peristaltic Pump Theory Peristaltic Pump Features & Benefits Peristaltic Pump Limitations Roller."— Presentation transcript:
1 DulcoFlex DulcoFlex Pumps
2 DulcoFlex AGENDA Peristaltic Pump Theory Peristaltic Pump Features & Benefits Peristaltic Pump Limitations Roller versus Shoe Technology Hose life DulcoFlex product line DulcoFlex features Applications Summary
3 DulcoFlex DulcoFlex History DateEvent 1995Boyser Bombás founded by Juan Jofresa in Barcelona Spain 2001Fisher Process Industries signs a 5 year exclusive distributor agreement with Boyser Bombás to represent the Boyser peristaltic pump in North America. 2006The agreement is extended and Periflo pumps now markets themselves as a manufacturer 01/01/2009ProMinent Fluid Controls of Heidelberg Germany purchases Boyser Bombás. 10/04/2010Pulsafeeder purchases Periflo Pump Company from Fisher Process Industries
4 DulcoFlex DulcoFlex History DateEvent 10/31/2011Periflo Pump’s contract with Boyser Bombás is cancelled. 02/23/2011ProMinent USA launches the Boyser Bombás product line under the DulcoFlex trademark. 04/19/2011Periflo Pumps is now directed to purchase all Boyser Bombás products through PFC USA 04/20/2011Periflo Pumps ceases to purchase pump components from PFC USA
5 DulcoFlex Peristaltic Pump Theory Per·i·stal·sis (per·i·stal·ses) n. pl. The wavelike contractions of a tubular structure that propel the contents forward by alternate contraction and relaxation. As the rotor of the pump rotates the fluid is gently pushed forward until it is expelled through the discharge. In a peristaltic pump this occurs twice per revolution.
6 DulcoFlex Peristaltic Pump Theory Peristalsis is regarded as one of the simplest and most efficient means of pumping fluids.
7 DulcoFlex Peristaltic Pump Features & Benefits
8 DulcoFlex Seal-less Design With the hose being the ONLY contact point of the material, there is no need for any sealing devices whatsoever! Other PD pumps require mechanical seals, packing glands or ball checks. Since the fluid is held hostage inside the hose, no mechanical components are susceptible to corrosion and wear. Peristaltic Pump Features & Benefits
9 DulcoFlex Accurate dosing. Because of such a high volumetric efficiency, the hose and tubing pumps make excellent dosing and metering pumps. With repeatability they are accurate to +/- 1% when dosing and metering. Peristaltic Pump Features & Benefits
10 DulcoFlex Self Priming The peristaltic hose pump is the ONLY PD pump capable of pulling a “dry” vacuum of 29.5 feet (9 meters) making it the best suction lift PD pump available. Peristaltic Pump Features & Benefits
11 DulcoFlex Reversible. Since there are no sealing devices required for a hose or tubing pump, they can be run in either direction. Reversing a pump can be an effective way to clear suction line blockages. Peristaltic Pump Features & Benefits
12 DulcoFlex Peristaltic Pump Features & Benefits Low maintenance costs. The only repair parts required for peristaltic pumps are hoses or tubes. (NOTE: Shoe pumps also require replacement lubricant.) A typical hose/tube replacement takes less than 2 hours and the pump does not need to be removed for service. Most replacement tubes/hoses cost less than 10% of the purchase price of the pump!
13 DulcoFlex Run Dry Some PD pumps cannot run dry or risk catastrophic failure. Hose pumps are totally capable of running dry for an undetermined amount of time. The peristaltic hose pump can also handle fluids with air entrained or gases. Peristaltic Pump Features & Benefits
14 DulcoFlex Gentle pumping action. Since hose pumps turn at slow speeds, the product is gently pushed through the hose with minimal turbulence. The hose pump is one of the best pump technologies available for minimizing damage to shear sensitive materials such as water based paints and flocculants. Peristaltic Pump Features & Benefits
15 DulcoFlex Abrasion resistant. Hose life is NOT related to a products abrasive qualities. Due to the slow speeds and gentle pumping action the hose pump is capable of pumping some of the more abrasive liquids such as ink, sludge, and TiO2 Peristaltic Pump Features & Benefits
16 DulcoFlex No slip. Slip as defined is “the action of the positive displacement pump to allow some of the pumped liquid to be forced back into the cavity which is now filling with product.” Hose pumps are very close to being 100% volumetric efficient as slip is virtually eliminated by the complete compression of the hose. Peristaltic Pump Features & Benefits
17 DulcoFlex Peristaltic Pump Limitations
18 DulcoFlex Peristaltic Pump Limitations There are a limited amount of elastomeric materials available for hose manufacturing. Inevitably there are some chemicals that hose pumps will not be able to be used for. Example: Toluene is not compatible with any rubber products associated with hose pumps. Sizing. Compared to other PD pump technologies, hose pumps have a large footprint.
19 DulcoFlex Maximum flow rates typically are around 230 gpms. Temperature is restricted based on hose selection. The highest temperature condition is 210º F. There are pressure limitations based on pump speed. The faster the pump speed the lower the output pressure. Maximum pressure for DulcoFlex hose pumps is approximately 232 psi. Peristaltic Pump Limitations
20 DulcoFlex Peristaltic Pump Limitations Pulsation All peristaltic pumps pulsate. This pulsation can affect sensitive in-line equipment such as flow meters and can cause excessive vibration in pipe lines. It is recommended that a pulsation dampening device be installed near the pump discharge.
21 DulcoFlex RollerversusShoeTechnology
22 DulcoFlex Roller versus Shoe Technology SLIDING SHOE TECHNOLOGY A set of fixed shoes slide over the surface of the hose causing it to compress the hose twice per revolution. Since the compression causes friction heat, the chamber is filled with a glycerin based food grade lubricant.
23 DulcoFlex Roller versus Shoe Technology ROLLER TECHNOLOGY Rollers are mounted on permanently greased bearings. This allows the rotor to rotate smoothly during compression. The hose and outer roller surface are lubricated with silicon grease which reduces friction creating a lower starting torque, lower operating torque and less mechanical stress on the hose.
24 DulcoFlex Roller versus Shoe Technology Because of reduced hose stress, roller pumps can increase hose life by 30% over shoe compression pump hose life! Because of reduced torque, the roller pumps typically consume less HP. Roller technology is limited to 116 psi (8 bar) operating pressures. Shoe technology is suitable for operating pressures to 232 psi (16 bar ).
25 DulcoFlex Shoe pumps have a difficult time maintaining system pressure when operated below 3 rpms. However, a similarly sized roller pumps can maintain system requirements at speeds below 1 rpm! Roller versus Shoe Technology
26 DulcoFlex HoseLife
27 DulcoFlex Hose Life Factors affecting hose life: Speed Temperature Process chemical Discharge pressure Suction conditions
28 DulcoFlex Hose Life SPEED KILLS! The single biggest impact on a hoses life is speed. With a hose life expectation of 10,000,000 restitutions before performance decline, you can see how the proper selection of the pumps speed is so critical. 10,000,000 / 2 / pump rpm / 60 = approximate hose life. 10,000,000 / 2 / 40 / 60 = 2083 hrs. 10,000,000 / 2 / 30 / 60 = 2778 hrs. By selecting a pump 10 rpms slower, the hose life expectation increases by 25%!!!
29 DulcoFlex Hose Life Typical hose life curve – DFC pumps
30 DulcoFlex Hose Life Temperature Higher operating temperatures can cause the hoses to swell. This makes it more difficult to compress the hoses. DulcoFlex hoses are limited to 175º F on the NR, NBR and Hypalon. The EPDM hose has a temperature limit of 210º F
31 DulcoFlex Process Fluid Peristaltic pumps have a limited availability of hose materials. Selecting the wrong material can cause premature failure of the hose/tube. For example: A fluid containing oils or fats/greases is not compatible with natural rubber. NBR would be the hose of choice. There are numerous chemical compatibility charts available to help select the correct hose material. Hose Life
32 DulcoFlex Hose Life Suction Conditions Extremely high suction lifts can cause premature wearing of a hose. At greater lifts, the hose has a hard time restoring itself to it’s original shape. If the hose does not reconstitute itself back to it’s original shape, there is a reduction in the flow. A vacuum device can be installed to help the hose reclaim its original shape. Discharge Pressure Extremely high discharge pressures make it very difficult for the roller or shoe to completely compress the hose. Slip can increase causing a decline in performance
33 DulcoFlex DulcoFlex reinforced hoses are manufactured to very specific engineered tolerances. The nylon reinforcement is hand wrapped assuring good quality control. The frequency of the wrap is also important. Increasing the frequency of the wrap extends hose life. Hose Life
34 DulcoFlex Hose Life Competitors hose. Less frequency of reinforcements DulcoFlex hose. More frequency of reinforcements – longer life!
35 DulcoFlex Hose Life DulcoFlex reinforced hose available in: Natural Rubber (175º F max) Nitrile Buna Rubber (FDA approved) (175º F max) EPDM (175º F max) Hypalon (175º F max) DulcoFlex tubing available in: Norprene (30 psi max) Tygon (30 psi max)
36 DulcoFlex DulcoFlexProductLine
37 DulcoFlex DulcoFlex Product Line DFAa Series DFBa Series DFCa Series DFDa Series
39 DulcoFlex DulcoFlex Product Line DFBa Roller Pump Series Uniquely designed for reinforced hose OR tubing! Heavy duty pump. Flow range: 0.1 gph – 390 gph (6.5 gpm) Suction lift approximately 27’ Viscosity to 15,000 cps Max pressure: hose – 115 psi tube – 30 psi Sizes available: 10mm, 13mm, 16mm 19mm, 22mm NO FILL LUBRICANT REQUIRED
40 DulcoFlex DulcoFlex Product Line DFCa Series Roller Hose Pump Medium/High flow Heavy duty applications. Flow range: 1.3 gpm – 132 gpm. Max pressure: 115 psi. Self priming to 27’. Viscosities to 60,000 cps Roller technology. Cartridge type bearing system. Reversible rotation. Available sizes: 30mm, 40mm, 50mm, 60mm, 70mm NO FILL LUBRICANT REQUIRED!
41 DulcoFlex DulcoFlex Product Line DFD Series Shoe Compression Pumps Medium/High flow Heavy duty applications. Flow range: 1.3 gpm – 225 gpm Max pressure: 230 psi. Self priming to 29’. Viscosities to 60,000 cps Shoe technology. Cartridge type bearing system. Reversible rotation. Available sizes: 25mm, 32mm, 40mm, 60mm, 70mm, 80mm, 100mm
42 DulcoFlex DulcoFlex Hose Pump Features
43 DulcoFlex Hose Connection The majority of hose leaks occur closest to the discharge connection. The hose acts like a small “accordion” and because the hose is under system pressure at this point – most failures occur there.
44 DulcoFlex Several hose pump manufacturers have “external” hose connections. External hose failures can create environmental and safety hazards. Hose Connection
45 DulcoFlex Introducing the DulcoFlex Disaster Proof Connections. The flange housing is cast right into the pump. A beveled “C” clamp is attached to the hose. The insert is installed into the hose. The flange assembly is then attached which closes the “C” clamp firmly around the hose. Any leaks are now contained within the pump. DulcoFlex Features
46 DulcoFlex DulcoFlex Features Heat dissipation Shoe compression pumps create a tremendous amount of heat. As we have learned, heat can affect hose life (shorten). DulcoFlex has designed our pumps to maximize heat dissipation. Heat sync tabs have been cast into the housings of our pumps. Keeping the hoses cool helps extend their life.
47 DulcoFlex Applications Municipal applications Clean water: Chemical transfer Chemical feed Chemical metering Dirty water: Sludge transfer De-watering feed Chemical transfer Chemical feed Chemical metering