Model DST-4® Dustless Street Sweepers
The TYMCO Model DST-4, mid-sized, dustless sweeper utilizes the same state-of-the-art technology as TYMCO's proven DST-6. The DST-4 removes dirt, dust and debris from the sweeping surface, and uses filters that have a Minimum Efficiency Reporting Value (MERV) 16 Rating, meaning they are able to capture a minimum of 95% of 0.30 micron and larger size particles, far exceeding PM10 requirements.
TYMCO's patented filtration system enables the DST-4 to be equally efficient in wet or dry conditions, so you don't have to avoid puddles and leave debris behind. Our DST System when coupled with our Regenerative Air System produces the most technologically advanced street sweeper available today. Both our DST-4 and DST-6 set the performance standards for particulate matter removal in the U.S. and Canada.
Mounted on a highly maneuverable cabover "standard truck chassis," the DST-4 can travel to the job site at legal speed limits and then perform the dustless cleaning required in industrial and municipal applications.
The dustless features are engineered to allow the sweeper to perform in all types of weather conditions with no operator adjustments required.
TYMCO Sweeper Design
TYMCO Sweepers are designed in way that truly reflects the culture at TYMCO. When our engineers approach a challenge or a need on the sweeper, they work to develop straightforward solutions. For example, all TYMCO Sweepers use True Regenerative Air. This design delivers the simplest approach as well as the highest performance with the lowest downtime as compared to other sweeper technologies.
- True Regenerative Air
- Smart Gutter Broom
- Easy Access to Components
- Operator Friendly Design
- High Productivity
- Low Maintenance
More About TYMCO Sweeper Design
Features
Pick-Up Head
The TYMCO Model DST-4 Pick-up head incorporates a full-width 78 inches of blast and suction. The Model DST-4 heavy duty Pick-Up Head is designed to work effortlessly with the TYMCO Regenerative Air System to pick up a wide variety of debris from leaves and trash to heavy dirt, sand, rocks, and most importantly, ultra-fine particles.
Hopper
High dump function that lifts the hopper up to 72 inches for dumping into various size containers and most 30 cubic yard roll off containers. The TYMCO Model DST-4 is equipped with powerful piggyback hopper lift cylinders. These heavy duty dump cylinders allow the Model DST-4 to high dump even the heaviest of loads. A safety strut is permanently attached to the hopper frame for easy accessibility. When the hopper is in the up position, simply insert the steel pin into the hole on the built-in safety strut.
Gutter Brooms
Gets debris out of the curb/gutter with 36" diameter gutter brooms with in-cab controls. The tilt gutter broom allows you to reach down into the deepest gutters. TYMCO's 36" gutter broom design has a pressure sensing sequence valve to automatically determine the digging pressure needed for different debris; therefore, customers get maximum broom bristle life and cleaning performance.
Variable Speed Gutter Brooms
From inside the cab, the operator can control the speed of the gutter brooms. This allows the operator to match the speed of the truck while sweeping to lessen the amount of dust being kicked up.
Dust Control
TYMCO incorporates a high efficiency multi-pass cylindrical centrifugal dust separator for maximum particulate separation and sweeping performance. Designed for easy clean out and maintenance.
On board 77 gallons of water for dust control around the gutter brooms and inside the hopper. For below freezing conditions, the sweeper will continue sweeping dustless without using water.
DST System
The small amount of air that is diverted from the system to achieve the dustless effect is filtered through TYMCO’s patented DST system. The DST System will filter the diverted air through a pre-cleaner and cartridge filters. These filters have been determined through independent laboratory testing using the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) 52.2 testing standards to have a Minimum Efficiency Reporting Value (MERV) 16 Rating, meaning they are able to capture a minimum of 95% of 0.30 micron and larger size particles. That is 1/200 of the diameter of a human hair! The best part is that both the pre-cleaner and cartridge filters are washable, ensuring long service life.
The DST-4 can be used in wet or dry conditions because the combination of our centrifugal dust separator and pre-cleaner will spin out moisture before it sees the cartridge filters.
While sweeping, the cartridge filters are cleaned automatically by an intermittent air pulse which keeps the filters operational in most dusty applications.
Power Unit
The Model DST-4 sweeper is powered by a 56 horsepower Kubota auxiliary engine. This engine powers all hydraulic functions through a gear driven pump and directly belt drives the blower wheel.
Blower Wheel
TYMCO uses a natural rubber coated aluminum blower wheel which we have found to be the most abrasion resistant as well as reduces fuel consumption because of its lightweight design.
Rear View Camera
Cities, streets, alleyways, industrial areas are full of obstacles that need to be seen when backing up. The rear view back-up camera with in-cab display allows the operator to view the area behind the Model DST-4 while backing up providing additional safety and peace-of-mind to both Model DST-4 operators and owners. Additional cameras are also available to view the pick-up head and gutter brooms.
Truck Types
Isuzu NQR
Options
Stainless Steel Hopper and Dust Box
For maximum corrosion and salt spray resistance all interior hopper body sheet surfaces to be fabricated with low carbon, high chrome stainless steel.
The hopper weldment, hopper door, skimmer hood, hopper screen and dust box assemblies are included in these options. Dust separator inlet scroll and door are not stainless steel. Stainless steel bolt-on blower housing, and dust separator are also available.
Pick-Up Head Curtain Lifter
Hydraulic actuated and retractable roller assembly that provides the pick-up head with the ability to sweep large volume of light debris. Electronically controlled in cab.
Street Sweeping & The Environment
The Model DST-4 has several environmental benefits, features, and options including:
- Doing More With Less
- Water Efficiency
- South Coast AQMD Rule 1186 Certification
- ETV Verified for PM10 and PM2.5 Efficiency