RU2130804C1 - Material grinding device - Google Patents

Abstract

FIELD: grinding of radioactive waste. SUBSTANCE: device has body with branch pipes for loading and unloading of material, receiving container, feeder mounted for changing the slope angle, and drive rotor. Device body is positioned on beating supports built into housing of rotor bearing support for turning about its axis. Device body is provided with lock of loading branch pipe position. Feeder and receiving container have airtight connection with respective branch pipes and are made interchangeable. Lock may be manufactured as tongs interacting with disc secured on body. Device allows regulation of material feed to rotor and unification of containers used for loading, unloading and transportation of material. EFFECT: sealing of material loading and unloading assembly. 2 cl, 3 dwg

Description

 The invention relates to equipment for grinding materials of periodic action and can be used in the radiochemical, chemical and pharmaceutical industries, in particular, for grinding radioactive waste.

 A device for grinding and mixing dry components is known, comprising a housing and hatches for loading material and a discharge pipe for shredded material connected by a flexible hose to a receiving container. A drive rotor and a grill are placed in the housing for holding and dosing the material loaded into the housing [1]. The device does not provide means for sealing the material loading unit, which reduces its operational capabilities.

 The closest is a device for grinding material, including a housing with nozzles for loading and unloading material, a receiving tank, a feeder installed with the ability to change the angle of inclination, the drive rotor [2].

 The disadvantage of this device is that the constructive solution of the download node does not allow to avoid dusting during operation of the device.

 The problem to which the invention is directed is to develop a constructive solution to reduce dusting during operation of the device and to unify the containers used for loading, unloading and transporting material.

 The problem is solved in that in the known device, comprising a housing with nozzles for loading and unloading material, a receiving tank, a feeder installed with the possibility of changing the angle of inclination, a drive rotor, the housing of the device is mounted on bearing bearings of the rotor with the possibility of rotation around its axis and is equipped with a latch the position of the loading nozzle, while the feeder and the receiving tank are hermetically connected to the corresponding nozzles and are made interchangeable. The latch can be made in the form of pliers interacting with a disk mounted on the device.

 In FIG. 1 shows a section of a device; in FIG. 2 is a view A of FIG. 1; in FIG. 3 is a view B of FIG. 2, the retainer.

 The grinding device comprises a housing 1, a material loading pipe 2 mounted at an angle of repose, an unloading pipe 3 of crushed material, a receiving tank 4 sealed to the discharge pipe 3, a feeder 4, hermetically connected to the loading pipe 2, a rotor 6 connected to the shaft 7 of the electric drive 8. The shaft is mounted on the bearing bearings 9, located in the housing 10 of the bearing bearing shaft. The housing 1 of the device is mounted on bearing bearings 11, integrated in the housing 10 of the bearing bearing shaft. Bearing bearings are sealed with stuffing box seals 12, 13. The receiving tank 4 and the feeder 5 are made interchangeable and serve as a transport container. The rotor is made in the form of a drum 14 with slots 15. A finger 16 is placed inside the drum 14 and is fixedly mounted on the housing 1. The housing 1 is rotated manually or using a mechanical (electrical) drive (not shown). The device is attached to an arm 17, which is, for example, part of a camera or other supporting structure. To fix the position of the receiving tank 4, the feeder 5 and the loading nozzle connected to it when turning the housing 1, a latch 18 is provided that interacts with the disk 19 mounted on the housing 1. The latch is made in the form of pincers 20 mounted on the bracket 17. The jaws 21 of the pincers 20 cover the disk 19 and are compressed and expanded using a screw 22 and a nut 23 located on the free ends of the pliers.

 A device for grinding material works as follows.

Initially, the housing 1 is rotated so that the pipe 3 for unloading the material is in the lower position. To the pipe 3 hermetically connect the receiving tank 4, free of material. Then rotate the housing 1 through 180 ^o around the axis of the rotor, while the pipe 2 for loading material will take a lower position. A feeder 5 filled with material intended for grinding is connected to it. Next, rotate the housing 1 at an angle that provides uniform pouring of material from the feeder 5 into the drum 14 through the pipe 2 for loading. The angle of rotation of the housing 1, which determines the slope of the loading nozzle and feeder 5, is selected depending on the angle of repose of the crushed material.

 With the vertical position of the feeder, the angle of inclination of the loading pipe 2 is equal to the angle of repose of the crushed material. In this position of the feeder, the volume of material entering the drum 14 will be maximum and will lead to a deterioration in the conditions of the material grinding process. To improve the grinding conditions, including reducing dusting during the grinding process by uniformly feeding the material into the drum, a loading nozzle is installed by turning the housing at an angle that is initially less than the angle of natural slope of the material, then the inclination of the loading nozzle is gradually adjusted to the angle of natural slope. In this case, the feeder, together with the loading pipe, accordingly changes its position. The angle of rotation of the housing at the final and intermediate positions of the loading nozzle is fixed with pliers 20 and disk 19. For this, the free ends of the pliers are pulled together with a screw 22 and nut 23. Next, an electric drive is turned on. When the rotor rotates, the grinding of the material is achieved due to the collisions of the particles of the material with the walls of the drum 14, pin 16, and also with each other. The crushed material through the slots 15 enters the receiving tank 4. At the end of the grinding process, the receiving tank 4 is disconnected and an empty tank is installed in its place. Next, the process of preparing the device for grinding the next portion of the material is repeated. For a period of prolonged shutdowns of the device, the pipe 2 and 3 for loading and unloading the material is sealed with either a feeder 5 or a receiving tank 4, or plugs (not shown).

 The design solution of the device allows for the sealing of the nodes of loading and unloading of material, regulation of the supply of material to the rotor, as well as to unify the containers used for loading, unloading and transportation of material.

 1. RU 2 031 719 C1, cl. B 02 C 18/06, 1992.

 2. SU 1 747 156 A1, cl. B 02 C 13/10, 1992.

Claims (2)

 1. A device for grinding material, including a housing with nozzles for loading and unloading material, a receiving tank, a feeder mounted with a possibility of changing the angle of inclination, a drive rotor, characterized in that the housing of the device is mounted on bearing bearings built into the housing of the bearing support of the rotor with the possibility rotation around its axis, and is equipped with a latch for the position of the loading nozzle, while the feeder and the receiving tank are hermetically connected to the corresponding nozzles and are made interchangeable.  2. The device according to p. 1, characterized in that the latch is made in the form of pincers interacting with a disk mounted on the housing.

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