Technology Catalog - Vendor Detail

Vincent - Screw Press
see Trident Screw Presses

Company Description:

In the Fall of 1931 Dan B. Vincent placed in operation the first dryer used to produce dairy feed from citrus peel. This began a series of successful feedmilling systems. In 1936 a patent was issued to him for a dryer particularly adapted for the process, the first of more than twenty machinery and processing patents to issue over the next forty years. As a refinement of these processes, the Company developed a superior screw dewatering press, first patented in 1961. Today Vincent is focused on Vincent's key product line, screw presses. Throughout all these years the Company has been Tampa based, with all engineering and manufacturing taking place at progressively larger factories in the Ybor City area. Today the Company continues as a family-owned business.

 

In 2016 Vincent entered into an agreement with Trident Processes LLC to market their screw presses for use in agriculture. For information on agricultural applications please see Trident Processes - Screw Presses.


Technology Description:

The then-new KP screw press was first shown at the 1996 World Dairy Exhibition in Madison, Wisconsin. Rather than a sales effort, the objective of our booth was to determine the marketability of the product and to find suitable channels of distribution.

 

Vincent knew that dairy farmers, especially large-scale operations, had been processing their manure through screw presses. With 68,000 attendees, the show gave us ample opportunity to find out why.

 

One increasingly common use of the compost is as bedding for dairy barns. The farmers we interviewed were using materials such as sand, sawdust, and rice hulls, which go either on the concrete floor or over a foam pad. (In fact, there were at least four exhibitors showing rubber or plastic "cow mattresses".)

 

University studies have shown that pressed manure has just the right moisture content (70%) for composting. This raises the manure temperature sufficiently to kill bacteria, thus making the compost safe for use as bedding. However, most of the farmers we talked to were reluctant to use the material for fear of infection (principally mastitis) spreading to the herd. (Since this original writing, it has become common to bed with manure solids straight from the screw press, without composting.)

 

Three different "manure separating" devices were exhibited at the 1996 show: sidehill screens; drag flight conveyors with slotted bottom troughs; squeeze rolls; and a screw press. Besides being large and mechanically complicated, the drag flight conveyors had limited, if any, squeezing action, so the dewatering that they achieved was marginal. The squeeze rolls dewatered a little better, but they were maintenance prone and costly.

 

These areas have been addressed in our KP series of presses. The screw of the press is supported at both ends, rather than using a cantilevered support. This prevents the screw from hitting the screen once the machine loosens up. Also, the gearbox is separated from the inlet hopper by a drop-out gap; this saves the gearbox upon failure of the shaft seal in the inlet hopper. Our use of standard NEMA (American) motors also reduces maintenance costs.

 

Vincent

446 Harrison Street, #81D

Sumas, WA 98295

USA

1-800-799-3740

 

Technology Type

  • Screw Press

Vendor

  • Equipment Vendor

Product

  • Fiber

Problem

  • Nitrogen
  • Phosphorous
  • Storage
  • Odor
  • GHG

 

To view additional information about this vendor, click below.


Technology Strengths,Weaknesses and Critical Indicators

Screw press technologies:

  • Produces fiber for bedding, soil amendment and compost
  •  Used extensively on dairies across the country to reduce concerns associated with storage and application
  • Do not significantly reduce nutrients from the manure stream
  • Can utilize many types of technology like slope screen, screw press, rotary drum and others
  • Used before many other technologies to remove coarse solids
  • Minimal maintenance and operator time required
  • Proven technology for nitrogen recovery, phosphorous recovery, storage reduction, GHG reduction, and odor control but with limited impact in all cases

Newtrient Comments/Opinions:

Coarse solids separation technologies:

  • Produces fiber for bedding, soil amendment and compost
  • Used extensively on dairies across the country to reduce storage and application concerns
  • Does not significantly reduce nutrients from the manure stream
  • Can utilize many types of technology like slope screen, screw press, rotary drum and others
  • Used before many other technologies to remove coarse solids
  • Minimal maintenance and operator time required

 

Vincent screw presses are now being marketed by Trident Processes in the agricultural market.

Comments added 09/25/2017

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