SU1662713A1 - Devices for spray cleaning of units and parts after mechanical working - Google Patents

Abstract

The invention relates to devices for blasting of components and parts after machining and can be used in instrument-making and other sectors of the national economy. The invention improves the cleaning efficiency. The device comprises a housing, inlet pipes, diametrically located and connected to pressure pipelines, a hollow shaft mounted for rotation, connected to a hydraulic nozzle. A hollow cylinder is installed coaxial to the hollow shaft, having openings located between the blades fixed to its outer surface and connected to it by means of a flange. The hollow shaft is made in a stepped form, the upper part of it, located above the flange, has a larger diameter; on its end, a bar with fingers adjustable along the length is fixed above the body. The flow direction switches, made in the form of butterfly valves with an axis and fixed flow guides mounted vertically, are installed in the casing against the nozzles. On the axles in its upper part above the body there are two leashes with fingers placed on its surfaces, with one finger having an emphasis on the opposite side of the disk and on each disk this emphasis is installed in the diametrically opposite side. The fingers interact with the radial fingers of the slat. 2 hp ff, 6 ill.

Description

The invention relates to devices for the jet cleaning of components and parts after machining, as well as before painting, and can be used in instrument-making and other branches of the national economy.

The purpose of the invention is to increase the cleaning efficiency.

Figure 1 presents the proposed device, a General view; figure 2 - node I in figure 1 (the drive body of the hydraulic nozzle); Fig 3 is a view of A in Fig.2; in Fig.4 is a section bB in Fig.Z; figure 5 is a section bb In figure 4; figure 6 - section GG in figure 4.

The device for blasting products includes a washing chamber 1 with tanks 2 for washing liquid and a pump unit (not shown). Chamber 1 has a door 3 which is lifted to a vertical position by a pneumatic cylinder 4 The device has a remote control 5 Inside the washing chamber 1 there is a hydronic cage 6 having a drive located in the housing 7. The housing 7 is connected by inlet pipes 8 to a pressure pipe (not shown) The nozzles 8 are diametrically mounted. Inside the housing 7, a hollow shaft 9 is rotatably mounted.

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coaxially with which a hollow cylinder 10 is installed, having openings 11 made between blades 12 placed on the outer surface of the hollow cylinder 10. The hollow shaft 9 is connected to the hollow cylinder 10 by a flange 13 with axial movement and connected to a hydraulic nozzle 6. The hollow shaft 9 has openings 14 and is made in a stepped form, the upper part of it 15, placed above the flange 13, has a larger diameter and is made solid, on its end above the case there is a bar 16c fixed with lugs 17, in which holes are made to attach radial pins Tsev 18, adjustable in length In the housing 7 against the nozzles 8, flow direction switches are installed, made in the form of butterfly valves 19 with a wedge-shaped shape with an axis 20 and stationary flow guides 21 installed vertically, the side walls of which are parallel to the walls of the housing. The butterfly valve 19 and the flow guide 21 form channels for the passage of fluid with the wall of the housing. On axis 20, in its upper part above housing 7, two drivers 22 and two disks 23 with fingers 24 and 25 placed on its surface are attached, with one of fingers 25 having a stop on the opposite side of the disk, and on each disk this support installed in the diametrically opposite side. The fingers 24 and 25 interact with adjustable along the length of the radial fingers 18 of the strap 16.

The device works as follows.

When pumping fluid through the inlet nozzles 8 and the position of the shutters 19, as shown in Fig. 5, the fluid flow passes through the channel formed by the rotary shutters 19, the fixed flow directions 21 and oppositely located walls 26 and 27 of the housing 7, falls on blades 12, rotating the hollow cylinder 10. Since the hollow shaft 9 is connected to the hollow cylinder 10 by a flange 12 with the possibility of axial movement, and the hollow cylinder 10 has holes 11, made between the blades 12, the liquid flows through these holes into the annular cavity, forming between the hollow cylinder 10 and the hollow shaft 9, and since the upper part of the shaft, located above the flange 13, is of a larger diameter, due to the pressure difference between the liquid above the flange and below the flange, the shaft seems to be in a suspended state, and the liquid entering the hollow shaft 9 through the holes 14, begins to rotate it counterclockwise, and with it the hydraulic nozzles 6 with greater speed due to the lack of friction between the shaft and the end walls of the housing 7. Simultaneously, the bar 16 rotates, which is in engagement through fingers 18 and 24 Disk 23, leads them in rotation. When turning the hydraulic system 6 and the strap 16 by 180 in the event that only one pin 18 is pulled out, which engages with

0 with fingers 24 (FIG. 3), the disks 23 rotate 45. The rotation of the hydraulic nozzle 6, the strip 16 and the disks 23 in one direction occurs until the moment when the finger stops 25 of the disks 23 come into contact with the leash 22,

5 which is rigidly and motionlessly fixed on the axis 20, it will turn and turn the flap 19 by 45, i.e. to the wall of the housing 26 and 27. The butterfly valve 19 changes the direction of fluid flow inlet and, consequently, the direction of rotation of the hydraulic nozzle 6, fingers 24, discs 23. Thus, when one finger 18 is in engagement with the fingers 24 of the disk 23, switching fluid flow occurs after

5, when the hydraulic nozzles 6 and the bar 16 are rotated two full turns, i.e. at 720 °.

Increasing the frequency of changing the direction of fluid flow, and therefore

0, the change in the direction of rotation of the hydraulic nozzle 6 is achieved by increasing the number of fingers 18 by adjusting their length involved in engagement with the fingers 24 of the disk 23. For example, if three fingers 18 are involved in the engagement, then when rotating the hydraulic nozzle 6, the strips 16 are 180 °, the dial will turn 135 °, i.e. the frequency of change in the direction of fluid flow, and hence the frequency of change

0 rotation of the hydraulic nozzle 6 is increased by 3 times.

Changing the direction of rotation of the hydraulic nozzle 6 improves the quality of cleaning products and intensifies the cleaning process by changing the angle of attack of the liquid jets entering the surface of the products, increasing the productivity of the device.

Claims (3)

The ability to rotate the shaft in a suspended state reduces the frictional forces and, consequently, the power consumption of the device. Claims 1. Device for blast cleaning products containing a fixed hollow 5 a housing, a pressure pipe connected to the housing by means of two inlet pipes branching off the pipeline, placed inside the housing for rotation by a hollow cylinder with blades on its outer surface, having openings between the blades for the passage of the working agent into the cavity of the cylinder, and a jet nozzle connected to the cylinder, characterized in that, in order to increase the cleaning efficiency, it has flow direction switches in the form of two dampers, a support bar mounted perpendicular to the axis of the cylinders and associated with it to ensure rotation of the bar, with each end of the bar provided with at least one finger located in a plane parallel to the plane of rotation of the bar, while the outlets of the the pipes are diametrically opposed, each valve is installed opposite the outlet of the Corresponding pipe and is connected to the housing by means of an axis freely installed in it, one end of which has a free disk mounted on it with fingers placed along its circumference on one of its planes and with the possibility of alternating contact with the fingers of the strap during its rotation for ensuring the rotation of the disk around its axis, and a leash rigidly connected with the axis, located on the side of the free plane of the disk, and the latter has an emphasis on this plane to periodically interact with the driver when the disk is rotated. 2. The device according to claim 1, characterized in that it has a hollow shaft with radial holes placed on the housing coaxially to the cylinder with the possibility of axial movement and connected to the cylinder by means of the last flange placed in the cavity fixed from rotation to the cylinder The hollow shaft at one of its ends has a step made of solid and larger diameter with respect to the diameter of the shaft to position the shaft in suspension during operation, and the bar is connected to the cylinder by placing its shaft end with a step. 3. The device according to claim 1, that is, so that the fingers in the bar are set to adjust their length. FI.1 li & A 91 / Ј P / 25 23 2ff 22 2k15 L i 1912 fO 11/4 8 V Fig 5 in 12 2719 21 Editor M.Kelemes FIG. 6 Compiled by T. Keys Ileva Tehred M. Morgenthal 7 20 nineteen Fig & YYY eight 19 26 Proofreader M. Demchik