RU201250U1 - PORTABLE MACHINE FOR GRINDING AND LAUNCHING OF THE VALVE SEALING SURFACE WITHOUT DISMANTLING IT FROM THE PIPELINE - Google Patents

Abstract

The utility model relates to the processing of materials by cutting and can be used for grinding and lapping the sealing surfaces of the bodies and wedges of the valves without dismantling them from the pipeline during operation in the oil refining, petrochemical industry, at the facilities of the energy complex and other industries. The portable machine contains a gearbox connected by a rack and a telescopic disk drive, on which tool carriages with lapping discs are located, and a platform mounted on the rack for fixing the machine to the valve body, configured to adjust the position of the tool carriages relative to the processed sealing surface of the valve. The machine contains a system for feeding lapping emulsion of various consistency into the treatment zone, made in the form of a supply pipeline that can be connected to a source of lapping emulsion and connected to a swivel, which is connected by means of a flexible pipeline to tool carriages equipped with an irrigation unit. The telescopic disk is made with grooves that ensure the longitudinal movement of the tool carriages with the possibility of their fixation in a given position depending on the diameter of the processed sealing surface of the valve. The processing time is reduced, the quality of the processed surface is improved. 2 ill.

Description

The utility model relates to machine-tool construction, to portable machines for grinding and lapping sealing surfaces of valve bodies and wedges. The proposed machine can be used in the production of valves, as well as during their repair, without dismantling from the pipeline during operation in the oil refining, petrochemical industry, at the facilities of the energy complex and other industries.

Known portable device for grinding and lapping sealing saddle surfaces in the valve body without dismantling it from the pipeline: US patent No. 4549373, IPC В24В 15/02, publ. 10/29/1985. The device contains a faceplate with tools evenly spaced around the circumference (grinding wheels and laps). The faceplate is connected kinematically to the drive for imparting rotational motion to it during the lapping process. The disadvantage of the device is the need to remove it during lapping to apply the lapping emulsion, which increases the time of the technological process and can lead to a loss of flatness of the treated surface due to the violation of the constancy of the bases.

Another device for grinding the valve seat of a pipeline is known: RF patent No. 2022761. MPK V24V 15/00, publ. 11/15/1994., Taken as the closest analogue. The device contains a lapping head connected to the drive through the frame and kinematically through a chain transmission. The device is installed on the middle flange in the valve body after dismantling the cover, the spindle with the locking element, the drive from it, set against the lapped surface, secured, after which the process of grinding and lapping is carried out. The disadvantage of the device is the frequent removal and installation of the device for introducing a lapping emulsion into the grinding zone; re-adjustment and adjustment is required, which increase the processing labor and do not always meet the requirements of the processing parameters due to the withdrawal of the tool and offset of the bases, leading to a violation of the flatness of the machined sealing surface.

The technical problem is that in the existing designs of devices for processing the sealing surfaces of valves, in order to introduce the lapping emulsion into the processing zone, it is necessary to stop, remove the machine, which does not provide the required processing quality and significantly increases the processing time.

To eliminate these shortcomings, the machine is equipped with a system for feeding lapping emulsion of various consistencies directly into the processing zone, as a result, the cycle of withdrawals and installation of the machine for introducing the lapping emulsion into the lapping zone is reduced, which leads to a reduction in the time of the technological operation of surface treatment and ensuring the requirements for the quality of the surfaces , since there is no withdrawal of the tool and offset of the bases.

FIG. 1 shows a general view of the machine, front view;

FIG. 2 - General view of the machine, rear view.

The machine is a prefabricated structure consisting of a gearbox 1 and a drive of telescopic disks 3, connected by a rack 2. Inside this assembly is a chain transmission that transmits torque and rotation from the drive device to the telescopic disk 7. On the telescopic disk 7 there are tool carriages 8 having a longitudinal movement relative to the slots of the telescopic disc and fixed in the required position by bolting. The tool carriages are equipped with grinding or lapping discs and an irrigation unit 11. To supply the lapping emulsion to the lapping area, the swivel 9 is connected to the tool carriages 8 by a flexible pipeline 10. In turn, the swivel 9 is connected to the machine spindle and the supply pipeline 6. The pipeline 6 is connected to the source feeding the lapping emulsion. The machine is mounted on the valve body through platform 4 and retainer 5.

Before installing the machine on the surface of the valve body, the position of the tool carriages is adjusted to the required diameter of the lapped surface. After installing the machine on the surface of the valve body, the position of the telescopic disk is adjusted to ensure alignment with respect to the inclined sealing surface of the valve by manipulating the platform controls 4. After the machine is set up, it is turned on at the required speed.

With the rotation of the telescopic disk 7 pressed against the machined surface, the peripheral speed transmits rotation to the lapping spindles of the telescopic disk 7, the lapping process is carried out. To exclude repeated and subsequent stopping and dismantling from platform 4, the machine is equipped with a system for supplying lapping emulsion of various consistencies to the lapping area. The lapping emulsion is supplied through the supply line 6, the swivel 9, the flexible line 10 and the irrigation unit 11.

The technical result is to reduce the time spent on those. surface treatment operations, high productivity and quality assurance, due to the constant presence of lapping emulsion in the processing area.

Claims (1)

A portable machine for grinding and lapping the valve sealing surface, containing a gearbox connected by a rack and a telescopic disk drive, on which tool carriages with lapping discs are located, and a platform mounted on a rack for attaching the machine to the valve body, made with the ability to adjust the position of the tool carriages relative to the processed sealing valve surface, characterized in that it contains a system for supplying lapping emulsion of various consistency to the treatment zone, made in the form of a supply pipeline that can be connected to a source of lapping emulsion supply and connected to a swivel, which is connected by means of a flexible pipeline to tool carriages equipped with an irrigation unit , while the telescopic disk is made with grooves that ensure the longitudinal movement of the tool carriages with the possibility of fixing them in a given position, depending on the diameter. th sealing surface of the valve.

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