IT1046981B - Twin cylinder reciprocating pump for concrete - has hydraulic valve mechanism timing valve and cylinder stokes - Google Patents
Twin cylinder reciprocating pump for concrete - has hydraulic valve mechanism timing valve and cylinder stokesInfo
- Publication number
- IT1046981B IT1046981B IT5359674A IT5359674A IT1046981B IT 1046981 B IT1046981 B IT 1046981B IT 5359674 A IT5359674 A IT 5359674A IT 5359674 A IT5359674 A IT 5359674A IT 1046981 B IT1046981 B IT 1046981B
- Authority
- IT
- Italy
- Prior art keywords
- cylinders
- valve
- concrete
- hydraulic
- cylinder
- Prior art date
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The pump has two vertical cylinders containing pistons. Both cylinders open in to a common chamber with inlet and discharge openings and a changeover vane valve which puts the cylinders alternately into communication with the inlet and discharge. The pistons are moved by two hydraulic cylinders sliding on rods. Each hydraulic cylinder has a lug which operates a switch at the end of the discharge stroke which operates the main hydraulic valve to change over the concrete valve and reverse the operation of the hydraulic cylinders. The cylinders are connected by a cable so that the piston performing the downstroke pulls the other one up for its suction stroke. The hydraulic system ensures that the piston movements are not reversed until the concrete discharge valve has changed over.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT5359674A IT1046981B (en) | 1974-10-17 | 1974-10-17 | Twin cylinder reciprocating pump for concrete - has hydraulic valve mechanism timing valve and cylinder stokes |
GB4783474A GB1452561A (en) | 1973-11-16 | 1974-11-05 | Apparatus for pumping wet concrete |
ES1974207363U ES207363Y (en) | 1973-11-16 | 1974-11-11 | PUMPING APPARATUS FOR CONCRETE WITH EXCESS OF WATER. |
US05/523,017 US3994627A (en) | 1973-11-16 | 1974-11-12 | Pumping apparatus for wet concrete |
DE2462651A DE2462651C3 (en) | 1973-11-16 | 1974-11-15 | concrete pump |
CA213,891A CA1008300A (en) | 1973-11-16 | 1974-11-15 | Pumping apparatus for wet concrete |
DE2454290A DE2454290C3 (en) | 1973-11-16 | 1974-11-15 | concrete pump |
FR7437644A FR2251733B1 (en) | 1973-11-16 | 1974-11-15 | |
JP13244574A JPS5644268B2 (en) | 1973-11-16 | 1974-11-16 | |
DE19762653021 DE2653021A1 (en) | 1973-11-16 | 1976-11-22 | Twin cylinder reciprocating pump for concrete - has hydraulic operating cylinders fed through two hydraulic valve cylinders |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT5359674A IT1046981B (en) | 1974-10-17 | 1974-10-17 | Twin cylinder reciprocating pump for concrete - has hydraulic valve mechanism timing valve and cylinder stokes |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1046981B true IT1046981B (en) | 1980-09-10 |
Family
ID=11283958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT5359674A IT1046981B (en) | 1973-11-16 | 1974-10-17 | Twin cylinder reciprocating pump for concrete - has hydraulic valve mechanism timing valve and cylinder stokes |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1046981B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1985866A1 (en) * | 2007-04-26 | 2008-10-29 | Services Pétroliers Schlumberger | A rotary distributor for pressure multiplier |
-
1974
- 1974-10-17 IT IT5359674A patent/IT1046981B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1985866A1 (en) * | 2007-04-26 | 2008-10-29 | Services Pétroliers Schlumberger | A rotary distributor for pressure multiplier |
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