US1729672A - Coal-pulverizing machine - Google Patents

Description

w 3a v mm b? u 5 I u H. T A A i E a w :|r Q L INVENTOR LPH JACKSON BY AT NEY -Oct. 1, 1929. R. JACKSON GOAL PULVERIZING mcnmn Filed April 12, 1926 WITNESSES Patented Get. 1, 1929 UNETED STATES PATENT OFFICE RALPH JACKSON, OF COVENTRY, ENGLAND, ASSIGNOR TO ALFRED HERBERT LIN"- ITED, OF BUTTS, COVENTRY, ENGLAND, A BRITISH COMPANY COAL-PULVERIZING MACHINE Application filed April 12, 1926, Serial No. 101,236, and in Great Britain May 2, 1925.

This invention relates to coal pulverizing machines, and more particularly to machines of the kind comprising a pulverizing chamber and a fan chamber separated by a diaphragm plate. The object of the invention is to provide simple and expeditious means for obtaining access, from one end of the machine, firstly to the interior of the fan chamber and then to the interior of the pulverizing chamber.

According to this invention, there is employed on the pulverizing machine a hinged cover, and a displaceable bearing for the shaft, whereby, after the bearing has been displaced, the cover can be moved about its hinge to give access to the interior of the casing.

If desired, this cover may form a casing for the fan, and be hinged to the pulverizing chamber.

The diaphragm plate may also be hinged, preferably coaxially with the cover or fan casing and about hinges carried by the pulverizing chamber.

The accompanying drawing, which shows the preferred method of carrying out the invention, is a plan view of the machine, the feed gear being removed and certain parts being broken away to show the interior construction. The drawing also indicates, by means of the portions in chain lines, certain portions removed from the machine, and the fan casing and diaphragm plate swung into the open position of the machine.

The machine comprises the pulverizing chamber 2 within which can be seen parts of the moving beaters 3 and of the fixed beaters 4. A diaphragm plate 5 separates the pulverizing chamber from the fan chamber 6, the casing for the latter being indicated at 7. The driving shaft for the machine is shown at 8 and it extends through the diaphragm plate in which is a large central aperture 9 through which the pulverized fuel is drawn by the fan 10 and subsequently discharged through the outlet 11.

The fan casing 7, which forms a cover for one end of the machine, has a conical recess 12 or register engaging with a corresponding spigotal part 13 on the diaphragm plate 5 and is provided with hinge lugs 14 adapted to be connected with corresponding lugs 15 on the pulverizing chamber 2. The casing is also secured by bolts (not shown) spaced around it and extending through outer flange 16.

The bearing 17 for that end of the shaft carrying the fan is adapted to be withdrawn endwise from the fan casing, after removal of the cap 18 and the shaft collar 19. The bearing 17 is in the flanged bush or sleeve 20 and is removed by withdrawal of this bush from the bracket 21, which latter at its lower part (not shown) is attached to the casing. After the bearing and the flanged sleeve 20 are removed, the sleeve 22 fixed on the shaft 8 and provided with the disc 23 extending into the fan casing and at the same time filling the aperture 24 in the latters end wall, can also be removed. This leaves an annular space around the end of the shaft which allows the casing to swing about its hinge axis 25 without fouling the end of the shaft, as is shown by the chain lines. When the casing has been swung open the fan wheel 10 is exposed, and the latter is so secured to its shaft that it can be quickly detached therefrom.

The diaphragm plate 5 is also hinged to the pulverizing chamber coaxially of the fan casing hinge, its hinge lugs 26 being located between those provided for the casing. As above mentioned, there is a central aperture 9 in the diaphragm plate of relatively large diameter, and this enables the plate to be swung about its hinge without fouling the end of the fan shaft. A conical spigot 27 or register is also provided on the diaphragm plate to engage with the pulverizing chamber.

The same bolts may serve to secure both the fan casing and the diaphragm plate to the pulverizing chamber, and when these are removed and the bearing has been withdrawn from the casing it is possible very expeditiously to obtain access either to the interior of the fan casing only or to the interior of the pulverizing chamber.

TVhat I claim as my invention and desire to secure by Letters Patent of the United States is 1. A pulverizing apparatus comprising a pulverizing chamber, a casing wall and a diaphragm plate hinged thereto, a rotatable shaft passing through the casing wall and plate, and a romavble bearing for said shaft mounted on one of the hinged parts, said parts being so constructed and arranged that by first removing said bearing the casing and plate may be swung open without interference with said shaft.

2. A pulverizing apparatus comprising a pulverizing chamber, a cover hinged to said chamber, a rotatable shaft, and a removable bearing for said shaft, said bearing being mounted on. the cover and arranged for withdrawal endwise clear of said cover to permit the opening thereof.

3. A pulverizing apparatus comprising a casing, a cover hinged thereto and having an opening therein, a rotatable shaft adjacent the opening, and a removable bearing for the shaft mounted on the cover within said opening, said parts being so constructed and arranged that the removal of the bearing will permit the swinging open of the cover without disturbing the shaft.

4. A pulverizing apparatus comprising a casing, a cover hinged thereto and having a large opening through the central portion thereof, a rotatable shaft extending through the opening and spaced from the edge thereof sufficiently to permit the cover to swing clear thereof, and a removable bearing for the shaft mounted on the cover within the opening.

5. A pulverizing apparatus comprising a pulverizing chamber, a fan casing, a diaphragm plate arranged to form a partition between said pulverizer chamber and said fan casing, said diaphragm plate and said fan casing being hinged to said pulverizing chamher, a rotatable shaft, a removable bearing for said shaft mounted on said fan casing, and a fan removably mounted onsaid shaft within said fan casing, said parts being so constructed and arranged that said hearing may be removed from the fan casing and the fan casing swung outwardly to permit access to the interior of the fan casing without interference' with the shaft, and the fan removed and the diaphragm plate also swung open to permit access to the interior of the pulverizing chamber.

6. A pulverizing apparatus comprising a pulverizing chamber, a rotatable shaft therein, a fan casing hinged to the pulverizing chamber and adapted to swing clear of the shaft, a diaphragm plate hinged. to the pulverizing chamber between the chamber and fan casing and also adapted to swing clear of the shaft, means for bringing the plate and the fan easing into alignment with the pulverizing chamber, and means for simultaneously securing the plate and fan casing to the pulverizing chamber.

7. A pulverizing apparatus comprising a casing, a cover movably attached thereto so as to permit access to its interior, a rotatable shaft for the pulverizing member located within the casing and extending through the cover, bearings for the shaft, one of which is so positioned that it normally prevents opening the cover, and a bearing supporting means associated with said bearing and cover which provides for the removal of the bearing and for opening the cover without disturbing the shaft.

8. A pulverizing apparatus comprising a pulverizing chamber, a cover hinged to said chamber, a rotatable shaft, and a bearing for said shaft which is detachably secured to the cover.

9. A pulverizing apparatus comprising a casing, a cover movably attached thereto so as to permit access to its interior, a rotatable shaft located within the casing and extending through the cover, a bearing for one end of the shaft normally located in the path of the cover, and means removably securing the bearing in position so that it may be removed and the cover opened.

10. A pnlverizing apparatus comprising a casing, a cover hinged thereto and having an opening through the central portion thereof, a rota table shaft extending through the opening and spaced from the edge thereof suffciently to permit the cover to swing clear, a bearing for one end of the shaft normally located in the path of the cover, and means removably securing the bearing in position.

In testimony whereof I have signed my name to this specification.

RALPH JAOKSUN.

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