The single toggle type jaw crusher has been developed extensively Because of its simplicity light weight moderate cost and good capacity it has found quite a wide field of application in portable crushing rigs It also fits into the small single stage mining operation much better than the slower Dodge type Some years since this type was developed with very wide openings for reduction crushing applications but it was not able to seriously challenge the gyratory in this field especially when the high speed modern versions of the latter type were introduced.
The single toggle machine like the Dodge type is capable of making a high ratio of reduction a faculty which enables it to perform a single stage reduction of hand loaded mine run ore to a suitable ball mill or rod mill feed.
Within the limits of its capacity and size of receiving openings it is admirably suited for such operations Small gravel plant operations are also suited to this type of crusher although it should not be used where the gravel deposit contains extremely hard boulders The crusher is easy to adjust and in common with most machines of the jaw type is a simple crusher to maintain.
Leading is a technique for measuring the gap between fixed and moveable jaws The procedure is performed while the crusher is running empty A lead plug is lowered on a lanyard to the choke point then removed and measured to find out how much thickness remains after the crusher has compressed it This measures the closed side setting The open side setting is equal to this measurement plus the throw of the mantle The minimum safe closed side setting depends on.
CrushingHandbookand Crushing Plant Design and Layout Considerations.
Blake Double Toggle Originally the standard jaw crusher used for primary and secondary crushing of hard tough abrasive rocks Also for sticky feeds Relatively coarse slabby product with minimum fines.
Overhead Pivot Double Toggle Similar applications to Blake Overhead pivot reduces rubbing on crusher faces reduces choking allows higher speeds and therefore higher capacities Energy efficiency higher because jaw and charge not lifted during cycle.
Overhead Eccentric Single Toggle Originally restricted to sampler sizes by structural limitations Now in same size of Blake which it ha s tended to supersede because overhead eccentric encourages feed and discharge allowing higher speeds and capacity but with higher wear and more attrition breakage and slightly lower energy efficiency In addition as compared to an equivalent double toggle they are cheaper and take up less floor space.
Dodge Bottom pivot gives closer sized product than Blake but Dodge is difficult to build in large sizes and is prone to choking Generally restricted to laboratory used.
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Once you have a general idea of what kind of crushers are for you and your project you can investigate local models with assistance from Equipment Traders easy to use online search tool Visit the Equipment Trader website to get started with a simple search that only requires a zip code and key word.
Painted rock hunting has started to become popular in different cities around North America We are hoping you can join in the fun with some of these ideas and leave a pet rock for someone else to enjoy Alternatively these pet rock ideas are perfect for kids that love to craft and want to keep their crafts in their rooms or outside garden.
HOW TO SETUP AND USE THE HAND OPERATEDROCK CRUSHERThe rock crusher is shipped with the handle screwed to the inside of the flywheel This must be reversed In the case of the double flywheel version there are two handles The handle has two flats to accept a 24mm spanner right against the flywheel Use a 24 spanner or a shifting spanner to hold it still The nut on the other side of the flywheel is a 30mm spanner Unscrew the nut and re mount the handles on the outside so the flywheel can rotate.
1 There are three adjustment one can make on the Rock Crusher Top adjustment of the fixed jaw bottom adjustment of the fixed jaw and stroke adjustment for the swing jaw Remember that the Fixed Jaw is invertible can be turned upside down So it can last you twice as long.
1 2 The second adjustment is at the bottom of the Fixed Jaw This sets the distance between the bottom of the Fixed Jaw and the bottom of the Swing Jaw The smaller the setting the smaller the stone has to be in order to pass out of the machine Do not try to crush stone or rubble down to a small size in one pass It takes too much time as the lowest teeth have to do most of the grinding.
Pull the pin out of the square bar at the bottom of the Fixed Jaw and align it with the hole that suits the job at hand There are 5 pin holes and three positions for the Square Bar This gives 15 steps of 2 mm each There are four holes in a row with the lowest one giving the smallest size and the top one much larger The hole out of line near the bottom hole gives the biggest size.
Make the bottom spacing between the jaws in the range of 25 8211 35mm pin in top hole or in the hole that is out of line This is the normal setting for the First Pass After crushing rubble which will generate some dust and small pieces use a sieve and take out the larger pieces for re crushing and make cement blocks with what passes through the sieve.
The third adjustment is the pin at the back of the Swing Jaw See the three numbered holes in the picture The pin is much tighter to remove than the other two because it passes through two bearings Give it a good stiff yank Clean it if necessary.
The bottom pin has three possible settings When the pin is in the bottom position 1 and passes through the bearings the bottom lip of the Swing Jaw moves up and down as well as back and forth slightly This position passes the most material through the machine per turn It also allows a large range of sizes to pass through For example if the bottom position is used and the Fixed Jaw is set so that the gap between the jaws is 15mm then the Rock Crusher will actually pass out 15 20mm pieces.
If you put in the third pin in the top most position 3 the range of size produced is reduced The capacity in wheelbarrows per day is also reduced as it takes more time to pass the pieces through as the Swing Jaw no longer opens and closes at the bottom releasing the stones The middle setting 2 is a compromise between the two others allowing a modest range of sizes through Another type ofhand powered rock crusher.
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A rock garden is a perfect solution for sloped property The rocks prevent erosion and provide an anchor for the plants Make sure you actually quotplantquot your rock to keep it stabilized Dig a hole slightly larger than the rock and fill in the dirt after setting the rock in place.
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