A sieve for household and construction needs can be easily made with your own hands. As an example, a garden sieve, through which it is convenient to sift compost. And not only compost, it is useful for sifting earth or sand.

The dimensions of the parts depend on how you plan to use the mesh. To sift a large volume of sand or soil, it is better to make the frame larger, for example 700/1200 mm. . This option is lighter and more portable.

To make a wooden frame, bars with a cross section of 50/50 mm are suitable. .
The type of wood is not that important, although I would choose birch or beech.

You will also need a metal mesh with a mesh size of 6-12 mm. , screws, nails or staples.

The frame in the photo measures 550/550 mm. , is quite suitable for manual sifting.
We saw the ends of the bars at an angle of 45*, the length of the parts is external corners accordingly it will be 550 mm. .

We assemble the bars in the form of a picture frame and tighten them with self-tapping screws from the outside.
Just be sure to drill holes in advance, at least half the length of the screw, so that the ends of the parts do not burst when tightened.
To make the frame stronger, it is better to screw in two screws on each side of the corner, that is, four for each corner. In total you will need 16 self-tapping screws 75-85 mm long. .

We place the finished frame on a metal mesh, mark it and cut it.
You can cut it with pliers, but it will take longer. It's faster and easier to use an angle grinder.
The mesh should not exceed the dimensions of the frame; it is better to make it a little smaller.

Place the mesh on the underside of the sieve and secure with nails or staples.
To prevent the mesh from sagging, it is better to hammer in staples at intervals of at least 50 mm. . For the dacha we do it ourselves.

Pictures from www.instructables.com
Sift the soil or compost to clear the soil of stones and plant roots.

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Summer is ahead, and with it comes the time for construction. Very often during construction there is a need to sift sand. I would like to present to you a method for making the most compact, convenient and cheap tool for sifting river sand.

To make it from materials we will need:
- two wooden bars: 40x40x3000 mm and 20x40x3000 mm,
- woven mesh with a hole diameter of 2x2 mm, as well as nails 100 mm and 40 mm long.
Of the tools needed hacksaw, hammer, tape measure and pencil.

It is better to initially buy woven mesh in a store in the size you need, so that there is no need to cut it at home, in in this case we will need one with dimensions of 60x68 cm. It looks like this (bent for clarity).

To begin, use a hacksaw to cut a 40x40x3000 mm block into four parts: two 60 cm long and two 90 cm long (in this case there will be only three cuts and the block will be completely used without residue). We also cut four pieces 60 cm long from the 20x40 block.

Now you need to fasten the 40x40 bars with a length of 60 cm and 90 cm using a 100 mm nail. In this case, it is necessary to move 15 cm away from the edge of the block (90 cm).

The bars stand perpendicular to each other. Likewise the other three sides. As a result, we get the following construction:

Now you need to secure the mesh; to do this, we nail a 40 mm block of 20x40x600 mm to the structure obtained above.

Likewise for the remaining sides.

As a result, we get a compact, reliable, inexpensive and convenient mesh for sifting sand with handles on both sides.

After retirement, my wife and I moved to the village and took up farming with great enthusiasm.

A small “rumble” for sifting sand (photo 1)

Its design is simple. On a frame that can be welded from a corner (I used a randomly found frame), I installed an electric motor from an old one washing machine type “Riga”, on the axis of which a cam was installed (photo 2). I made it from the rocker arm of the pusher mechanism from Zaporozhets - the diameter of its hole coincided with the diameter of the engine shaft. A metal plate is fixed to the frame in the plane of rotation of the cam.

I secured a wooden frame with a mesh on one side to the axle, and closer to the engine through threaded rods (photo 3). The lowest position of the frame is adjusted using a nut on the stud on the side opposite the spring and secured with a lock nut. Springs ensure that the frame is pressed against the cam.

Setting up the mechanism is extremely simple. Using nuts on the studs, you need to set the tension for the cam in such a way that when it hits the tangent, it “throws up” the frame, and the engine does not stop.

Before sifting sand, you need to raise the frame, start the engine (let it spin up) and you can work. Depending on the moisture content of the sand, it needs to be stirred. To obtain finer sand, I insert a mesh with cells of the required size into the frame. And don’t forget about the headphones: the design lives up to its name.

DIY sand sifter - photo

Device for sharpening knives on a woodworking machine

It implements the flat grinding method. The design is clear from photos 1 and 2. The base is made from a corner. WITH inside a rotating plate is installed on the axis, to which, in turn, an AB-42 engine with a power of 40 WT, 2700 rpm is attached. Abrasive wheel covered with a casing from a grinder.

The device is installed with an abrasive on the knives so that the planes of the rear edge of the knife and the abrasive coincide. I check the correctness of the installation “in the light”. After this, you need to fix the drum (photo 3) and sharpen the knives, slowly moving the device.

In principle, a micrometer screw is not needed (the first option was without it), but with its help it is very convenient to set the removal amount. It can be replaced with a screw with a fine thread pitch (0.5-1.0 mm). I straighten the abrasive with a diamond from an old glass cutter attached to the machine table (photo 4). I polish the blades (removing burrs) with an abrasive stone.

After sharpening, it is necessary to adjust the installation of the knives. It is convenient to do this using a dial indicator, the probe of which has a metal plate attached to it, and a strip of textolite is glued to it (photo 5).

The base of the fixture is made of 25x25 pipe and filled with lead. The indicator on the table must be set to zero, then move the probe to the knives. While rotating the drum, find the extreme position of the indicator arrow (with further rotation of the drum, the arrow will move in the opposite direction) and set the knives to the zero indicator mark.

Device for sharpening knives on a machine - photo

V. Kostev, Pskov region.

In order to mechanize this process and make the work easier, you can make mechanical device with electric drive. Such a mechanism will be especially relevant if it is necessary to prepare large quantity building mixtures from bulk materials.

Such a device is called a vibrating sieve or vibrating screen. It has enough simple design, and therefore it’s not difficult to make a vibrating sieve with your own hands.

General design

Making a vibrating screen for sand or crushed stone does not require a lot of time. The design description of the vibrating sieve includes the following elements:

• supporting frame on which all other parts and assemblies are located and secured;
• electric drive, which can be used as a power saw, jigsaw or drill;
• an external box (frame) without a bottom, mounted on fixed furniture casters;
• guide rails made of metal corners for moving rollers along them;
• nestable box with a metal mesh bottom;
• a chute for transporting sifted material to a collection bin;
• a device for adjusting the rotation speed of an electric motor.

The transport chute is easiest to make from plywood, but metal structure will be much more reliable, especially when sifting gravel or other coarse materials.

A device for adjusting the rotation speed may already be provided in the design of an electric drill or jigsaw. In this case, a separate external regulator will not be needed.

The principle of operation of a vibrating sieve for bulk materials is to transmit translational movements from a power tool to a frame with a fixed sieve. After sifting the materials, the inner wooden frame with the sieve rises and unnecessary screenings are discarded.

Required materials

To make a frame, two drawers and other elements of the mechanism, you will need:

• wooden blocks 60x70 mm;
• plywood 20 mm thick;
• 6 rubber or spring shock absorbers;
• 4 or 6 furniture casters with mounting frame;
• piano loop with a length of at least 500 mm;
• metal corners for guide rails;
• metal plates or strip for strengthening wooden parts designs;
• screws, bolts and nuts.

Should be paid special attention on the strength of the piano hinge, since when the screenings are thrown away, it will be subject to significant mechanical loads.

Dimensions of main structural elements

Before assembling a sand vibrating screen, it is recommended to draw an assembly diagram or a simple assembly drawing. This will simplify the assembly work and help determine the order in which they should be performed.

• length 1400 mm;
• width 600 mm;
• height 850 mm.

The length of the outer box without a bottom should be equal to half the length supporting frame. The width is 100 mm less than the width of the base, the depth is at least 120 mm.

The dimensions of the inner box with a mesh bottom should ensure its easy removal from the inner frame for free overturning and release of accumulated waste. The outer and inner boxes are connected along the short side with a piano hinge, as a result of which there is the possibility of lifting and tilting the inner structure.

Assembly order

The production of a vibrating sieve begins with the assembly of a supporting frame from wooden blocks in accordance with the drawing. To increase the strength of the structure, it is recommended to make connections of wooden parts with reinforcement with metal corners and plates.

After this, guide rails must be secured to the inside of the base frame as a support for the movement of furniture rollers. The guide angles are fastened together into a single structure using transversely installed wooden blocks. To reduce vibration levels during operation, 6 or 8 rubber shock absorbers must be installed between the corners and guides.

To secure the drive for a vibrating sieve made from an electric drill, jigsaw or saw, on one side of the upper part of the support frame it is necessary to provide a platform corresponding to the size of the power tool.

After the support frame is assembled, a plywood gutter is made and installed. The processed material will flow through it into the collection container. A metal gutter is more difficult to make, but it will provide a longer service life.

At the next stage, a sifting structure is assembled from two boxes, one of which with a sieve is inserted into the second.

On one short side the boxes are fastened together using a piano hinge.

Furniture rollers are attached to the bottom of the outer box without a bottom (frame), which ensure ease of movement of the boxes along the rails on the supporting support.

The size of the metal mesh cells is determined by the fraction bulk material, which will be sifted. Fastening the mesh to the frame is best done using metal tape and self-tapping screws.

The working body of the power tool is connected to the external movable box using a spring connection, which will provide smoother vibrations during operation of the mechanism. Translational movements from the electric drive are transmitted to the boxes, and as a result of their vibrations along the guides, the material poured into the inner box with a mesh is sifted.

The electrical power consumption of the mechanism depends on the power of the installed power tool. It should be noted that the more powerful the electric saw, the larger the dimensions of the vibrating sieve can be made and thereby process larger volumes.

If you use an eccentric, then you can use an electric drill as a power unit. In this case, the tool is installed sideways to the drawers and the drive mechanism will perform oscillatory movements.

Oscillation speed control unit

Manufacturers of power tools produce models with or without the ability to adjust the motor speed. In the second case, the oscillations of the electric saw may be too frequent, and additional external device for adjustment.

A rheostat-type regulator can be purchased at electrical supply stores. At the same time it is recommended to buy circuit breaker which will provide additional protection tool and its long-term operation.

As a result, you will be able to provide any required vibration frequency of the working boxes of the vibrating screen, depending on their load and the weight of the material being processed, without overloading the electric drive.

Protecting the electric drive from dust

During work, especially with materials such as cement and dry glue, dust is generated that gets onto the electric drive. Therefore, it is recommended to cover the installed electric motor with a protective casing, the design of which should not block ventilation holes tool. Such a casing can be made from a 2-liter plastic bottle.

The finished assembled vibrating sieve and its operation can be seen in the video below.

The use of a mesh for sifting sand or crushed stone in large volumes allows you to obtain building material the required fraction. This is possible through the use of low-frequency imbalances and high vibration amplitudes. Vibrating screen VG-1 has high performance, it is used not only to sift sand or crushed stone, but also to sort them.

Screen VG-1 allows you to get 3 fractions construction sand. At the same time, the supply and exit of material are quite convenient. The standard model has the following main advantages:

• thoughtful design;
• ease of installation and change of grids;
• increased efficiency of application;
• convenient sizes;
• ease of care of the device.

The device is equipped with an inertial unbalance type vibration exciter rather than vibrators, which increases technical specifications this equipment:

1. Number of factions – 1-3.
2. Power – 0.5-11 kW.
3. Productivity – up to 20 t/h (sand).
4. Mesh cell size is 0.2-20 mm.
5. Deck area – 1-7 m².

Vibrating screen VG-1 fully complies with GOST requirements. The device has the following main advantages for wet sorting:

• possibility of continuous modernization of the design;
• optimized kinematics of body movement;
• reduced costs for electricity consumption;
• calculating the size of sieves taking into account the productivity reserve;
• wet sorting using metal and PUR sieves;
• the possibility of moistening the surface of the sieves with nozzles;
• visualized and automated material sorting process;
• optimal selection of sieves for separating up to 99% of the fraction of material to be sifted.

The screen allows you to sort the most complex materials containing large volumes of silt and clay. This is ensured by the reliability of the screening sieve.

Self-contained vibrating sieve

It is not difficult to make a vibrating sieve for sifting sand with your own hands. Its production does not require much time and money. Among the elements of the device are the following:

1. Frame or base.
2. Motor (electric drill or electric saw).
3. External and internal drawers.
4. Rails that allow the movement of boxes.
5. Guide chute for collecting processed sand.
6. An external unit that regulates the speed of the engine.

The design has an internal folding box, the bottom of which is a metal mesh that allows sand to sift through.

To make the device, you will need the following types of materials:

• wooden bars - 60x60 or 60x70 mm;
• plywood or boards (18-22 mm thick);
• furniture casters – 4 pcs.;
• sifter;
• rubber shock absorbers – 6 pcs.;
• piano hinges;
• corners and plates made of metal;
• nuts, washers, screws, etc.

It is not difficult to prepare drawings for creating a vibrating sieve with your own hands. A homemade vibrating screen must have optimal sizes.

The frame of the device is pre-made from bars with boards required sizes. For fastening wooden elements used metal corner, screws and plates.

Next, bars - guide rails - are attached to the base from the inside. The movement of the boxes should occur due to the presence of metal angles. To improve the anti-vibration qualities, rubber shock absorber supports are installed between the corners and guides. The guides are fastened together using a cross bar.

At the top of the frame there is a platform for attaching the electric saw. Since it is used as an electric motor, it must be protected from dust. A special protective casing of suitable dimensions is suitable for this purpose.