SU1531294A1 - Crushing machine - Google Patents

Description

(46) 08.23.P2. Kyul v 31

(21) 4273783/33, 4248935, 4248936, 4248937, 4249533, 4249534, 4249535, 4249536, 4250491, 4250900, 4251024, 4251025, 4273627, 4273628, 4273629, 4273631, 4273632, 4273633, and present, and in accordance with the requirements of your reps , 4299750

(22) 05.26.87

(72) E.M.Golovchsky, N.G.Kovalev, V.A.Gutorov, Z.PoBaskaev, V.K.Kn zev, V.P.Leontiev, V.F.Vaulin, V.A.Novikov , G.P.Sobolev, V.B.Gromov and S.A.Malyutin

(53) 621.926.7 (088.8)

(56) USSR author's certificate N 66819, kp. B 02 S 7/04, 1945.

(54) DEVICE FOR CRUSHING

(57) The invention relates to a device for grinding materials, mainly polymer. The goal is to increase productivity. The grinding device comprises a housing in which a rotor and a stator are mounted opposite each other in a fork.

The invention relates to devices for grinding materials and can be applied in the chemical, construction and other industries.

The goal is performance.

H figure 1 shows the device, a longitudinal section; Fig. 2 is a view of the working surface of the rotor with variants of the grooves and notches; Fig. 3 shows a view of the working surface.

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loading and unloading nozzles At the periphery of the rotor there is an annular protrusion with blind radials {grooves, the output of which in the longitudinal section has the shape of a wedge or rounding, with a notch on the contacting surfaces of the rotor and the stator. . On the rotor, it can be performed in the radial direction, opposite under the sharp or X-shaped on the stator. Radial-blind grooves can also be printed in a trapezoidal or stepped shape. In order to remove the finished product from the grinding zone in the KOLPRROM rotor outburst between blind deafs. I1, the grooves are made with ventilation slots extending to the periphery of the rotor. With the help of increasing the reliability of the device on the non-working surface of the rotor and along its forming line, a loilt is installed, and to exclude the overheating rotor on its flank, it has an annular groove into which the refrigerant is fed. 3 il. 7 lp f-ly.

stator with options nb nojiiicii: i (i notches.

The device includes a housing I, in which the stator 2 and the rotor 3 are installed, the loading 4 and the unloading 5 nozzles, shaft 6, the gear mechanism; the roar of the gap between the stator and the rotor, consisting of an elastic element--) 7 m pit 8. The device rotor The drive is a peripheral ICOI. IMT-Q pin 1 {en annular protrusion with i.-i ni "lt. With blind grooves 9. In the book: h-1 c

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depending on the size of the particles of the initial comminuted material, these paei may also have trapezoidal or stupid forms. This shape of the grooves is due to the following.

The device can grind only pre-crushed material. When pre-crushing the material, the resulting particles have a large variation in size. In the total mass of the pre-ground material, there are always particles whose dimensions are larger than the input size of the blind radial grooves. This leads to the fact that during the operation of the device, these particles interfere with the entrance to the separate holes, and, consequently, the performance of the device decreases. For normal operation of the device, it is necessary that the filling of the material to be ground is radial,.; The groove is maximum. If only the dimensions of the groove are small, then the filling of the groove is possible only if there is an increase in the feed of the material being grinded into the mill, and the drive power will be much higher. In this case, the mass of the material being crushed in the working area increases, the heat release during grinding increases dramatically, this heat cannot be removed from the working area even by cooling it with water. Significant heat release leads to heating of the working bodies (up to temperatures of 500-700 C) and, as a result, their rapid deterioration, which, in turn, dramatically reduces the productivity of the mill:. Allowing the trapezoidal or stepped slots significantly expands the groove entrance, which prevents the entrance from closing without significantly increasing the paea size. In addition, the step-like groove allows the working area to be expanded by dividing the material that moves along the groove into two streams. The radial blind grooves 9 in the annular protrusion have an exit in the form of a rounding or wedge. It is these forms of paea output that create us-. catches for the occurrence of a centrifugal force that provides the necessary pressing of the material to be ground to the notch of the stator. Between the radial deaf grooves in the annular protrusion, ventilation slots 10 are made, extending to the periphery of the rods.

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Torah. They serve to dust the minted material from the working area to the exit channel, which improves the performance of the proposed device. An incision is made on the contacting surface of the rotor and the stator, which, depending on the material to be ground and the necessary grind, can be performed on the rotor in the radial direction, oppositely at an acute angle and on the X-shaped stator. The combination of different notches allows you to select the most favorable modes of grinding different materials. For example, for grinding the fluoroplastic f-a, f4 mb, an X-shaped notch is drawn on the stator, and on the rotor at an angle to the radius, and the angle is set against the direction of rotation of the rotor; for grinding rubber, a notch, performed at an acute angle, etc. gives the greatest performance.

The device works as follows.

The pre-ground material, for example a polymer, is fed through a loading nozzle 4 into the space between the rotation of the rotor and the casing of the device. Further, under the action of force t gesture, it falls into the blind radial grooves 9 of the annular protrusion of the rotor. Moving along the grooves, the output of which has a wedge or rounding, the particles of the material under the action of centrifugal force, forming on the rounding or on the groove of the groove, are pressed against the notch on the stator, on which it is grinding according to the principle of high-speed cutting.

The ground material enters the gap between the stator and the annular protrusion of the rotor and re-grinds here by notches on the stator and the rotor. Then, P1, the aid of the notch of the rotor and the ventilation slots 10, the powder is removed from the working area. Next, the blades 11 mounted on the rotor generatrix and the air flow created by the blades 12 located on the non-working surface of the rotor, powder is ejected through the nozzle 5.

When the device is started and stopped due to resonance, oscillations of the rotor occur, causing undesirable solpi-effects of the working parts of the stator and the rotor, which blunt the notches and reduces the service life of the stator. Therefore, the device is provided with an adjustment of the gap between the stator and the rotor, which is carried out with the help of a screw device on the screw 8 and the elastic element 7. Driving the screw 8 it through the stops 1 acts on the rotor 3 and moves it together with the shaft 6 and He bearings to the right, reducing the gap between the rotor and the stator and compressing while the elastic element 7. When turning the screw 8 in the other direction, the rotor 3 with the shaft 6 moves to the left by the elastic element 7, increasing the gap. The dispersion of the obtained powder is adjusted during the operation of the device by changing the gap between the stator 2 and the rotor 3 with the help of a screw device and an elastic element.

Making an annular protrusion with blind radial and ventilation slots on the rotor and notches on the stator allows high-performance fine grinding of materials, for example, polymers, according to the principle of high-speed cutting. Therefore, the device makes it possible to obtain fine powders of materials, having a large impact strength, with high productivity, which cannot be carried out by other devices known at present. For example, the device allows grinding fluoroplastic f-4, FAMB and others to a particle size of 30 µm, and less rubber, fluorine rubber, asbestos, fiberglass, etc. up to the size of astia 100 microns or less with a capacity of 80 kg / h with a drive power of 0 kW.

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Claims (8)

1. A grinding device, comprising a housing in which a rotor and a stator in the form of disks, loading and unloading nozzles are installed opposite each other, characterized in that, in order to increase productivity, a rotor with circular radial grooves is made on the rotor periphery, The entry of which in the cross section has the shape of a wedge or rounding, while a contact is applied to the contact of the surface of the rotor and the stator. 2. Device POP.1, characterized in that the rotor grooves are stepped in the radial direction, and an annular groove is made on the opposite surface of the rotor. 3. The device according to claim 1, about tl and - the fact that the notch is made in the radial direction. 4. The device according to claim 1, about tl and - the fact that the notch is on (Nenena counter at an acute angle. C. 5. The device according to claim 1, characterized in that the notch on the stator is made X-o. 6. A device according to Claim 1, which is due to the fact that in the annular protrusion of the rotor, ventilation slots are made between the pairs of pipes that extend to the periphery of the rotor. 7. The device according to claim 1, about tl and - so that the radial grooves have a trapezoidal shape. 8. A device according to Claim 1, characterized in that, in order to improve the reliability of operation, the vanes are mounted on the non-working surface of the rotor and along its generator. Tls Yu x F «r2 Phi Ph3 s