US1479541A

US1479541A - Pulverizer

Info

Publication number: US1479541A
Application number: US572532A
Authority: US
Inventors: Hirsch Paul Arthur
Original assignee: FURNACE ENGINEERING Co
Current assignee: FURNACE ENGINEERING Co
Priority date: 1922-07-03
Filing date: 1922-07-03
Publication date: 1924-01-01
Anticipated expiration: 1941-01-01

Description

Jan. 1, 1924 1,479,541

P. A. HIRSCH PULVERIZER Filed July 5, 1922 Hi 5 2/ Z WWW J5 ZZ 5 1 NJ I li J 7 [Z 1Z1 w Mi M Z4 115K017 5 Patented Jan. 1, 1924.

UNITED STATES PATENT OFFICE PAUL ARTHUR HIBSCH, OF ERIE, PENNSYLVANIA, ASSIGNOR TO FURNACE ENGINEER- N. Y., A CORPORATION OF NEW YORK.

To all whom it me column, or NEW YORK,

PULVERIZER.

Application filed July 8, 1922. Serial No. 572,582.

may 0071,06?

Be it known that 1, PAUL A. Hmson, a

citizen in the county of Erie Vania, have invented new provements 1n Pulverlzers,

of Great Britain, residin at Er1e,

and State 0 Pennsyland useful Imof which the following is a specification.

This invention relates to pulverizers used in pulverizin more particularly fuel where the fuel is carried directly with t e air going through the pulverizer to a furnace for combustion. In carrying out the lnventlon the inventionv is simplified by forming the pulverizer with a vertical axis and feeding the material at the top.

This simplifies the construction and makes a more satisfactory operation in many respects. this '1 preferably mount a In accomplishing tube at the axis of the pulverizer and feed the material through this tube delivering it to the pulverlzing apparatus at the bottom.

The material, therefore has the benefit of gravity in retaining the coarser particles in the pulverizer as against the draft of air moving the verized particles. vention will appear pul- Other features of the infrom the specification and claims.

The

Fig.

verizer, partly Fig. Fig. Fig.

invention is.illustrated in the accomlows 1 shows an elevation of the pulin section.

2 a section on the line 2-2 in Fig. 1. 3 a section on the line 3-3 in Fig. 1. 4 a section on the line 44 in Fig. 1.

1 marks the shell of the pulverizer, 2 a bottom plate on which the shell is mounted,

and 3 legs on which the bottom plate is mounted.

The

pulverizing chamber 5, and

6, all

a breaker chamber 4, a fan chamber arranged within the shell 1. The

pulverizer has the fan chamber through an opening 8 and the fan chamber discharges at 9.

A shaft 10 is journaled in a bearing 11 carried by the bottom plate and by a bearing 12 ing 12 der 13 at the top of the pulverizer, the bearcomprising the balls 12 and shoulforming the thrust bearing for carrying the wei ht of the shaft and attached parts. The earin 12 is carried by a frame 14 resting on the s ell 1.

' A tube 15 has the inwardly extending arms 16 which are fixed on the shaft 10. A hopper 17 leads to the upper end of the tube 15. At the lower end of the tube 15 there is a deflecting plate in the form of a cone 18 which deflects the material outwardly into the breaker chamber 4. The breaker is formed with the paddles 19 carried by adisc 20, the disc 20 being secured to the tube 15. The pulverizer beaters have the addles 21 carried by discs 22 and these are a so mounted on the tube 15 and operate in connection with an impact surface 23 arranged within the shell 1. A restricting plate 24 is placed between the chambers 4 and 5 restricting the opening 7 to a diameter less than the diameter of the discs 20 and 22 and also coming within the inner edge of the paddles 19. Restricting plates 25 restrict the diameter of the passage 8 between the pulverizing chamber and the fan chamber.

In order to obstruct the rotary motion of the material at the discharge of the pulverizer I place radially arranged plates 26 in the passage 8, being a portion of the annular space between the chamber casing 1, and the delivery tube 15. This tends to prevent the coarser material leaving the pulverizer. Such materials striking these plates is brought back into the pulverizer and subjected to further action.

The fan 27 is carried by a hub 27 on the tube 15 and draws air through the tube 15, breaker chamber, pulverizer chamber and discharges the air and pulverized material through the opening 9. In order to supplement the air drawn through the pulverizer I provide an opening 27 in the upper part of the fan chamber 6.

What I claim as new is 1. In a pulverizer, the combination of a vertical pulverizer chamber; rotating beaters in said chamber having a vertical axis; and a delivery tube within the beaters extending from the top of the chamber and delivering the material to the heaters at the bottom of the chamber; and whirl-obstructing vanes above said heaters, extending substantially horizontally across the annular space between the chamber casing and the delivery tube.

2. In a pulverizer, the combination of a vertical pulverizer chamber; a vertical shaft mounted in the chamber; a delivery tube carried by the shaft; and beaters mounted on the tube; and whirl obstructing elements above said beaters in the annular space between the chamber casing and the delivery tube, and air suction means operating above such whirl obstructing elements.

3. In a ulverizer, the combination of a vertical pu verizer chamber; a vertical shaft mounted in the chamber; a delivery tube mounted on the shaft; a deflector at the bottom of the delivery tube; and rotary beaters mounted in the chamber and receiving the material from the deflector; and whirl obstructing elements above said beaters in the annular space between the chamber casing and the delivery tube.

4. In a pulverizer, the combination of a vertical pulverizer chamber; rotary beaters in said chamber; a rotary delivery tube within the beaters and extending from the top of the chamber to the bottom; and a deflector at the bottom of the tube deflecting the material outwardly from the tube to the heaters.

5. In a ulverizer, the combination of a vertical pu verizer chamber; rotary beaters in said chamber; a rotary delivery tube within the beaters and extending from the top of the chamber to the bottom; and a deflector at the bottom of the tube deflecting the material outwardly from the tube to the beaters, said deflector plate being coneshaped.

6. In a pulverizer, the combination of a vertical pulverizer chamber; means for creating an upward draft through the chamber; rotar beaters in the chamber; and a rotary delivery tube within the chamber extending from the top of the chamber and delivering material to the beaters at the bottom of the chamber.

7. In a pulverizer, the combination of a vertical pulverizer chamber; rotary beaters mounted in said chamber; a delivery tube within the beaters extending from the top of the chamber and delivering material to the bottom of the chamber; and means for creating a draft downwardly through .the tube and upwardly through the chamber at the outside of the tr e; and whirl-obstructing vanes above sa' beaters, extending substantially horizon tally across the annular space between the chamber casing and the delivery tube.

8. In a pulverizer, the combination of a vertical pulverizer chamber; rotary beaters mounted in said chamber; a deliver tube within the beaters extending from t e top of the chamber and delivering material to a vaeaa the bottom of the chamber; and means for creating a draft downwardly through the tube and upwardly through the chamber at the outside of the tube comprising a fan rotating with the beaters, comprising a suction fan operating above said beaters, and a whirl obstructing means between the beaters and the fan.

9. In a pulverizer, the combination of a vertical pulverizer chamber; rotary beaters mounted in said chamber; a deliver tube within the beaters extending from t e top of the chamber and delivering material to the bottom of the chamber; and means for creating a draft downwardly through the tube and upwardly through the chamber at the outside of the tube comprising a fan carried by the tube, and whirl obstructing elements above the beaters and below such fan.

10. In a pulverizer, the combination of a vertical chamber; a vertical shaft in the chamber; a tube mounted on the shaft; heaters in the annular space between the chamber casing and said tube; and a fan mounted on the tube, said fan being arranged to create an upward draft through the chamber; and whirl-obstructing vanes above said beaters, extending substantially horizontally across the annular space hetwbeen the chamber casing and the delivery tu e.

11. In a pulverizer, the combination of a vertical chamber; a vertical shaft in the chamber; a tube mounted on the shaft; beaters in the annular space between the chamber casing and said tube; and a fan mounted on the tube, said fan being arranged to create a downward draft through the tube and an upward draft through the chamber.

12. In a pulverizer, the combination of a vertical shell having a breaker chamber in the lower part thereof and a pulverizer chamber therein of annular form above the breaker chamber; and a restriction slate between the breaker chamber and the pulverizer chamber.

13. In a pulverizer, the combination of a vertical shell having a breaker chamber and a pulverizer chamber therein; a vertical shaft; a tube on the shaft; breaker paddles arranged in the breaker chamber; pulverizer beaters carried by the tube and pulverizing chamber; and a restriction plate between the breaker chamber and the pulverizing chamber.

14. In a pulverizer, the combination of a vertical pulverizing chamber havin a discharge at the top; means for de ivering material to the bottom of the chamber; and means for obstructing a rotary movement of the material as it is discharged from the pulverizing chamber, consisting of blade-like vanes substantially traversing the space between the shaft and chamber walls.

Ill)

15. In a pulverizer, the combination of a vertical pulverizing chamber; a vertical shaft mounted in the chamber; a delivery tube mounted on the shaft; a beater mounted on the delivery tube; and means for obstructing a rotary movement of the material as ate is discharged from the pulverizing cham- 16. A pulverizing machine comprising a l casing, means for feeding to the lower portion of the casing the material to be pulverized, a shaft extending upwardly within the casing, pulverizing beaters on the shaft, means for maintaining an upward progress of air through the casing, and whirl obstructing means above the pulverizing beaters comprising blade-like transverse vanes.

In testimony whereof I have hereunto set my hand.

PAUL ARTHUR HIRSCH.