Slide Gate

Slide Gate


are made for a wide variety ofapplications. Each application has a unique set of design variables which will impact the overall design of the gate. Variables such as the opening size, product density, head height of material on the gate, and even the type of service the unit will be subjected to will have an impact on the construction of the slide gate. One of the most important, and often overlooked, design elements of a slide gate is the actuator. Correctly sizing the actuator is a key component in the design of a slide gate. There are several different options available for actuating a slide gate including pneumatic cylinders, electric linear and rotary actuators, hydraulic cylinders and manual hand and chain whe opening and closing force is essential for proper operation. The force required to open and close a slide gate is a function of the size of the gate opening, the type of bulk material in the bin or hopper above the gate, the head height of material on the slide plate and the design of the slide gate. When the slide gate is in the closed position, there is a vertical force pushing down on the slide plate caused by the head load of material above the gate The force to open the slide gate must be calculated using the coefficient of static friction between the material and the slide plate and the slide plate to the rollers. Note: In many cases a slide gate will not be able to close through a static column of material.

In order to determine the opening force required the following variables must first be provided:

  • Slide Gate Inlet Length
  • Slide Gate Inlet Width
  • Slide Plate Thickness
  • Bulk Material on Slide Plate
  • Bulk Material Density
  • Maximum Expected Head height of Bulk Material above the Slide Gate Using the variables provided above, the total weight of material on the slide plate can be determined. The maximum calculated height of the material on the slide plate is limited by the hopper design and may be much less than the total height of the hopper. The exact value of this calculated head height is dependent of the angle of repose of the material, density and material flow properties

    RMB KNOVATECH has performed extensive testing to ensure every slide gate is properly sized for the application for which it will be utilized. Each slide gate application is analysed by the RMB KNOVATECH Sales and Engineering staff in order to assure a 100% success rate on every application. Contact a RMB KNOVATECH representative today to learn more about the RMB KNOVATECH slide gate design.

    RMB KNOVATECH standard pneumatic slide gate cylinders operate most effectively when supplied with 6 Bar of clean and dry air. The standard design slide gates are not designed to be operated under a head load; however, hopper/silo discharge slide gates can be engineered to meet your specific application.

    Please contact the RMB KNOVATECH sales and engineering staff with any of your uniqueslide gate applications today. We can provide a solution for you

Technical Data

300 320 5 8 50
400 420 5 8 63
500 520 5 10 63
600 620 5 10 80
750 770 6 12 100
900 920 6 12 125

RMB Knovatech Pneumatic Slide Gate Standard Construction

Gate Size A B C D E F
300 320 450 125 900 1300 8
400 420 550 125 1100 1650 8
500 520 670 150 1340 2000 10
600 620 770 150 1540 2260 10
750 770 920 200 1840 2700 12
900 920 1070 200 2150 3250 12
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