US2075732A - Sandblast apparatus - Google Patents

Sandblast apparatus Download PDF

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Publication number
US2075732A
US2075732A US21266A US2126635A US2075732A US 2075732 A US2075732 A US 2075732A US 21266 A US21266 A US 21266A US 2126635 A US2126635 A US 2126635A US 2075732 A US2075732 A US 2075732A
Authority
US
United States
Prior art keywords
sand
air
mixing chamber
pipe
receptacle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US21266A
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English (en)
Inventor
Lauffer Emile
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2075732A publication Critical patent/US2075732A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0069—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with means for preventing clogging of the equipment or for preventing abrasive entering the airway

Definitions

  • This invention has reference to sand blast apparatus, in which sand is drawn away by means of compressed air in order to obtain a stream capable of cleansing machine parts or 5 realizing any other industrial use.
  • the sand contained in a receptacle under pressure runs into a mixing chamber into which the compressed air flows by creating generally eddies and whirls, which prevent to obtain a regular sand stream and necessitate a too large consumption of compressed air.
  • the sand is conducted into a space of the mixing chamber, which is not affected by the airstream in such a way as to be drawn into the air being relatively expended, and then to be expelled from this chamber without formation of eddies.
  • a particularly convenient method of carrying out the invention consists in terminating the air pipe in the mixing chamber according to the Vertical axis of the sand outlet passage and in causing the divergent air stream to attain the walls of the mixing chamber at the points where begins a frusto conical duct forming part of said chamber and connected to the sand delivery pipe; thus the sand is mixed to the air stream in a homogeneous manner and remains in this condition until it leaves the delivery pipe.r In
  • Figure 1 is an elevation View
  • 4,0 Figure 2 is another elevation view with a longitudinal section in the mixing chamber.
  • a tripod I On a tripod I is secured in a most convenient way a cylindrical metal receptacle 2 provided inwardly at a determined height with a discharge hopper 3 receiving the sand and closed at its bottom by means of an automatic valve ll.
  • the valve l is carried in a sliding way through a pipe 5 terminated externally by a three-way cock 6, to which are connected the air pipes 1 and 8, the first thereof being in relation with an air compressor, and the second leading to a mixing chamber I5, situated under the conical bottom I0 of the receptacle 2, the inner space oi the latter being connected to the pipe 8, un-
  • the three-way cock 6 is operated by means of a handle I2 arranged at the same side of the receptacle 2 as the lever I3 actuating upon the sand distributor, so that the operator can easily reach the two supply organs. 5
  • the outer end of the nozzle I9 is positioned approximately in the axis 25 of the passage I4, so as to be situated slightly on the side and at the commencement of the maximum opening of the frusto-conical chamber I5. Consequently the stream of compressed air escaping from the nozzle I9 produces at the 30 base of the passage I4, when the latter is uncovered by the stop cock I8, a depression causing the sand to fall regularly into the mixing chamber I5, without provocating therein air eddies and whirls, which are prejudicial to a nor- 35 mal working of the sand blast apparatus.
  • the operator removes the handle I2 yfrom the off position A to the working position M ( Figure 1) so as the compressed air 50 comes at the same time in the pipe 5 to lift up the valve 4 and in the pipe 8 to enter the mixing chamber I5 in order to be mixed with the sand escaping from the receptacle 2.
  • the passage I4 of said receptacle is ob- 55 structed, it may be easily cleared as follows: after closing the cock I8, the handle I2 is removed in the position E ( Figure 1) in which the compressed air is sent only into the mixing chamber I5, and the cover 23 of a curved tube 22 terminating in said chamber above the passage I4 is taken off. By opening then the cock I8, compressed air is suddenly sent into the passage I4 so that the obstruction materials are thrown back out of the receptacle 2 by means of the tube 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Jet Pumps And Other Pumps (AREA)
US21266A 1934-05-19 1935-05-13 Sandblast apparatus Expired - Lifetime US2075732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2075732X 1934-05-19

Publications (1)

Publication Number Publication Date
US2075732A true US2075732A (en) 1937-03-30

Family

ID=3895562

Family Applications (1)

Application Number Title Priority Date Filing Date
US21266A Expired - Lifetime US2075732A (en) 1934-05-19 1935-05-13 Sandblast apparatus

Country Status (5)

Country Link
US (1) US2075732A (no)
BE (1) BE403266A (no)
DE (1) DE653636C (no)
FR (1) FR789223A (no)
NL (1) NL41350C (no)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580842A (en) * 1947-09-11 1952-01-01 Ruemelin Richard Control valve for sandblast generators
US2651887A (en) * 1950-10-18 1953-09-15 Kent Moore Organization Inc Process of and apparatus for removing carbon from the interior walls of combustion chambers
US3148484A (en) * 1963-01-15 1964-09-15 Jaroco Internat Inc Sandblast generator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580842A (en) * 1947-09-11 1952-01-01 Ruemelin Richard Control valve for sandblast generators
US2651887A (en) * 1950-10-18 1953-09-15 Kent Moore Organization Inc Process of and apparatus for removing carbon from the interior walls of combustion chambers
US3148484A (en) * 1963-01-15 1964-09-15 Jaroco Internat Inc Sandblast generator

Also Published As

Publication number Publication date
NL41350C (no)
FR789223A (fr) 1935-10-25
BE403266A (no)
DE653636C (de) 1937-11-29

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