CN102220970A - Blockage-preventing pump structure for concrete pump - Google Patents
Blockage-preventing pump structure for concrete pump Download PDFInfo
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- CN102220970A CN102220970A CN2011101963760A CN201110196376A CN102220970A CN 102220970 A CN102220970 A CN 102220970A CN 2011101963760 A CN2011101963760 A CN 2011101963760A CN 201110196376 A CN201110196376 A CN 201110196376A CN 102220970 A CN102220970 A CN 102220970A
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Abstract
The invention relates to a blockage-preventing pump structure for a concrete pump and in particular relates to a blockage-preventing pump structure for a hydraulic actuating plunger type concrete pump, wherein the blockage-preventing pump structure is composed of a screw blade propulsion structure, a screw drive structure and related structures. The screw drive structure mainly comprises an external thread on a piston rod and an internal thread on a nut, wherein the nut is fixed and static, thus the piston rod can perform positive shift and positive rotation or reverse shift and reverse rotation when a main cylinder piston rod moves left and right under action of hydraulic oil in a main cylinder; the screw blade propulsion structure is fixed on the extended end of the piston rod along a spiral line by virtue of a plurality of blades, when the piston rod performs positive shift and positive rotation or reverse shift and reverse rotation, the screw blade propulsion structure generates assisted thrust or assisted suction, thereby playing a role in preventing pump blockage. The blockage-preventing pump structure provided by the invention is simple and effective in structure, can be used for reducing the phenomenon of the delivery pump blockage, overcoming the lag labor problem brought by the pump blocking and improving the work efficiency.
Description
Technical field
What the present invention relates to be applied to concrete pump a kind ofly prevents stifled pump structure, especially for the stifled pump structure that prevents of hydraulically driven ram formula concrete pump.
Background technique
Hydraulically driven ram formula concrete pump is as a kind of requisite concrete conveying equipment, be widely used on the infrastructure building site, be used to finish the transmission and concrete transmission operation, can alleviate the heavy work of construction site transmission and concrete transmission widely, improve construction speed and working efficiency.
But concrete pump is in the course of the work because various factors causes the phenomenon of stifled pump to happen occasionally.In case stifled pump takes place, must stop the normal action of carrying, forward and reverse repeatedly startup transfer pump also usually needs the labor cleaning, also will pull down associated pipe in case of necessity.As stifled pump takes place, and waste time and energy, influence construction speed, reduce manufacturing efficiency greatly.
At present, the pumping mechanism main structure of most of concrete pump (has omitted part-structure in the empty frame) as shown in Figure 1: two master cylinders (1,2), main oil cylinder piston (3,4), piston rod (5,6), concrete cylinder piston (7,8), concrete cylinder compositions such as (9,10), this pumping mechanism converts concrete suction and discharging operation by distributing valve (not expressing among Fig. 1).Normal working procedure is as follows: under the effect of master cylinder hydraulic oil, it is reciprocating that piston rod promotes concrete cylinder piston (7,8), and a concrete cylinder piston (7 or 8) advances; Another concrete cylinder piston (8 or 7) retreats simultaneously.Under the cooperation of distributing valve, the outlet of a concrete cylinder (I mouth or II mouth) is communicated with hopper, sucks concrete material; Meanwhile, the outlet of another concrete cylinder (II mouth or I mouth) connects the inlet of distributing valve, and this cylinder inner concrete material is sent.When acquiring a certain degree, trigger corresponding reversing arrangement (not shown), master cylinder 1,2 commutations, distributing valve action simultaneously (making the outlet of two concrete cylinders be changed to connection distributing valve inlet and hopper by connecting hopper and distributing valve inlet respectively), this makes: the concrete cylinder that retreats becomes the cylinder that advances, send the concrete material in the cylinder, the concrete cylinder that advances becomes and retreats cylinder, sucks the concrete material in the hopper.This process constantly circulates, thereby realizes uninterrupted pumping.When taking place to block up pump, can only stop normal continuous pump action, by anti-pump operated, the concrete cylinder that is in suction stroke is communicated with distributing valve, is in the concrete cylinder that pushes stroke and is communicated with, thereby the concrete in the pipeline is drawn back hopper with hopper, in general, need carry out positive and negative pump operatedly repeatedly, constantly change inhale, the feeding state handles, and influences manufacturing efficiency.
Summary of the invention
The objective of the invention is to propose a kind of stifled pump structure that prevents that is used for hydraulically driven ram formula concrete pump, effectively to avoid the often phenomenon of the stifled pump generation in the course of the work of present concrete pump, bring into play the high efficiency of transmission and concrete transmission pump work better.
The present invention is used for the stifled pump structure that prevents of hydraulically driven ram formula concrete pump, comprises power screw structure (in the accompanying drawing 2 23,24), helical blade push structure (in the accompanying drawing 2 21,22), main oil cylinder piston axle sleeve (in the accompanying drawing 3 25) and concrete cylinder piston sleeve (in the accompanying drawing 4 26) etc.Pumping mechanism structure diagram after installation power screw structure and the helical blade push structure as shown in Figure 2.
As shown in Figure 2, power screw structure (23,24) is formed screw pair by one section outside thread on the piston rod (15,16) and the internal thread on the nut, adopts common power screw, single thread, and not self-locking has the reversibility of transmission.Wherein, nut is motionless, and by power screw, the straight line of the active that piston rod (15,16) is had moves and is converted into the forms of motion that not only turns round but also move.
As shown in Figure 2, helical blade push structure (21,22) adopts several blades to be fixed on the external part of concrete cylinder inner piston rod (15,16) along helix.
As shown in Figure 3, main oil cylinder piston (13,14) has through hole, in order to fixed installation main oil cylinder piston axle sleeve (25), one end of piston rod (15,16) is installed in this axle sleeve (25), and fix at axial and main oil cylinder piston (13,14), so piston rod (15,16) only can freely turn round with respect to main oil cylinder piston (13,14).
As shown in Figure 4, concrete cylinder piston (17,18) has through hole, in order to fixed installation concrete cylinder piston sleeve (26), the other end of piston rod (15,16) passes this axle sleeve and stretches out from concrete piston (17,18), and fix at axial and concrete cylinder piston (17,18), so piston rod (15,16) only can freely turn round with respect to concrete cylinder piston (17,18).
The using method and the working principle that prevent stifled pump structure of concrete pump of the present invention are:
As shown in Figure 2, under the effect of master cylinder hydraulic oil, main oil cylinder piston 13 (or 14) promotes piston rod 15 (or 16) and concrete piston 17 (or 18) advances, under the cooperation of distributing valve (not expressing among the figure), concrete cylinder 19 (or 20) is in the feeding state, because the existence of power screw structure 23 (or 24), make piston rod 15 (or 16) when moving, do the forward rotation motion, this forward rotation motion makes the helical blade drive mechanism produce additional thrust, helps to send concrete material.Another piston rod 16 (or 15) drive concrete piston 18 (or 17) retreats simultaneously; Under the cooperation of distributing valve (not expressing among the figure), concrete cylinder 20 (or 19) sucks concrete material; At this moment, under the effect of power screw structure 24 (or 23), piston rod 16 (or 15) is done the reversed turning motion when retreating, and the reversed turning motion makes the helical blade drive mechanism produce additional suction, helps to suck concrete material.When acquiring a certain degree, trigger corresponding reversing arrangement (not shown), master cylinder (11,12) commutation, distributing valve action simultaneously (making the outlet of two concrete cylinders be changed to connection distributing valve inlet and hopper by connecting hopper and distributing valve inlet respectively), this makes: the concrete cylinder that retreats becomes the cylinder that advances, and sends the concrete material in the cylinder; The concrete cylinder that advances becomes and retreats cylinder, sucks the concrete material in the hopper.This process constantly circulates, thereby realizes uninterrupted pumping.Thereby improve stifled pump phenomenon effectively.
The anti-blocking structure of the present invention has been improved the stifled pump phenomenon of hydraulically driven ram formula concrete pump effectively, and it is simple in structure, reliability is high, do not need to increase energy consumption in addition; Improve concrete transfer efficiency.The pumping system that can be widely used in being correlated with.
Description of drawings
Fig. 1 is the pumping mechanism structure diagram of present widespread usage;
Fig. 2 is the pumping mechanism structure diagram that has increased after the anti-blocking structure of transfer pump of the present invention.
Fig. 3 is piston rod and the main oil cylinder piston connection diagram in the anti-blocking structure of transfer pump of the present invention
Fig. 4 is piston rod and the concrete cylinder piston connection diagram in the anti-blocking structure of transfer pump of the present invention
Embodiment
The embodiment who provides below in conjunction with accompanying drawing is described in further detail the present invention.
With reference to accompanying drawing 2, the stifled pump structure that prevents that is used for hydraulically driven ram formula concrete pump comprises power screw structure (in the accompanying drawing 2 23,24) and helical blade push structure (in the accompanying drawing 2 21,22), main oil cylinder piston axle sleeve (in the accompanying drawing 3 25) and concrete cylinder piston sleeve (in the accompanying drawing 4 26) etc.
Described power screw structure (23,24) is formed screw pair by one section outside thread on the piston rod and the internal thread on the nut, adopts common power screw, single thread, and not self-locking has the reversibility of transmission.Wherein, nut maintains static, and the piston rod straight line moves and turns round.In addition, main oil cylinder piston (13,14) has through hole, in order to fixed installation main oil cylinder piston axle sleeve (in the accompanying drawing 3 25); Concrete cylinder piston (17,18) also has through hole, in order to fixed installation concrete cylinder piston sleeve (in the accompanying drawing 4 26).One end of piston rod (15,16) is installed in the main oil cylinder piston axle sleeve (in the accompanying drawing 3 25), and the other end passes the concrete cylinder piston sleeve and stretches out from concrete cylinder piston sleeve (the accompanying drawing 4 26).Piston rod (15,16) main oil cylinder piston (13,14) and concrete cylinder piston (17,18) relatively freely turns round, but can not they move axially relatively.Described helical blade push structure (in the accompanying drawing 2 21,22) adopts several blades to be fixedly mounted on the external part of concrete cylinder inner piston rod along helix,
With reference to accompanying drawing 2, during concrete work, when main oil cylinder piston (13,14) under the effect of master cylinder hydraulic oil, drive piston rod (15,16) move right, because power screw structure (23,24) nut maintains static, piston rod (15,16) by power screw, axially movable do the forward rotation motion simultaneously to the right, and drive helical blade forward rotation, concrete cylinder piston (17,18) by piston rod (15,16) promote to move to right, this moment concrete cylinder (19,20) should be the feeding state, helical blade push structure (21,22) produce thrust, help to send concrete material.Otherwise, when main oil cylinder piston (13,14) is mobile in the other direction, piston rod (15,16) moves to left and reversed turning, and drive helical blade backward rotation, and concrete cylinder piston (17,18) moves to left, concrete cylinder this moment (19,20) should be the suction state, and helical blade push structure (21,22) produces suction, helps to send concrete material.Thereby effectively reduced the generation of stifled pump phenomenon.
Claims (3)
1. the stifled pump structure that prevents that is applied to transfer pump is characterized in that, comprises power screw structure (23,24) and helical blade push structure (21,22);
Described power screw structure (23,24) adopts common power screw, forms screw pair by one section outside thread on the piston rod (15,16) and the internal thread on the nut, single thread, and not self-locking has the reversibility of transmission.
Described helical blade push structure (21,22) adopts several blades to be fixed on piston rod (15,16) external part in the concrete cylinder along helix.
2. a kind of stifled pump structure that prevents that is applied to transfer pump according to claim 1, it is characterized in that, described main oil cylinder piston has master cylinder axle sleeve (25) in (13,14), one end of piston rod (15,16) passes this axle sleeve (25), and can rotate with respect to master cylinder axle sleeve (25) and main oil cylinder piston (13,14).
3. a kind of stifled pump structure that prevents that is applied to transfer pump according to claim 1, it is characterized in that, described concrete cylinder piston has concrete cylinder axle sleeve (26) in (17,18), one end of piston rod (15,16) passes this axle sleeve (26), and can rotate with respect to concrete cylinder axle sleeve (26) and concrete cylinder piston (17,18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110196376.0A CN102220970B (en) | 2011-07-14 | 2011-07-14 | Blockage-preventing pump structure for concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110196376.0A CN102220970B (en) | 2011-07-14 | 2011-07-14 | Blockage-preventing pump structure for concrete pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102220970A true CN102220970A (en) | 2011-10-19 |
| CN102220970B CN102220970B (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110196376.0A Expired - Fee Related CN102220970B (en) | 2011-07-14 | 2011-07-14 | Blockage-preventing pump structure for concrete pump |
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| CN (1) | CN102220970B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686050A (en) * | 2017-08-24 | 2018-02-13 | 芜湖市长江起重设备制造有限公司 | A kind of New overhead travelling crane oil pressure anticollision device, collision-prevention device |
| CN110539400A (en) * | 2019-09-09 | 2019-12-06 | 重庆贻晨兴工业设计有限责任公司 | Concrete conveying equipment and using method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4276003A (en) * | 1977-03-04 | 1981-06-30 | California Institute Of Technology | Reciprocating piston pump system with screw drive |
| JPS63264105A (en) * | 1987-04-22 | 1988-11-01 | Sasakura Eng Co Ltd | Reciprocating pump for reverse-osmosis membrane concentrator |
| EP0422745A1 (en) * | 1989-10-13 | 1991-04-17 | Pieter Faber | Concrete-pumping device |
| US6290475B1 (en) * | 2000-03-30 | 2001-09-18 | Jerry M. Snow | Helical wiper for sucker rod pump |
| CN1694634A (en) * | 2002-11-05 | 2005-11-09 | 姜成一 | Sealing structure of an up-down type piston assembly for exhausting a content |
| CN201043548Y (en) * | 2007-04-23 | 2008-04-02 | 吴文胜 | Oil electricity mixed oil cylinder |
| CN201354751Y (en) * | 2009-02-19 | 2009-12-02 | 陈书文 | Absorption-assistant submersible dredging pump |
-
2011
- 2011-07-14 CN CN201110196376.0A patent/CN102220970B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4276003A (en) * | 1977-03-04 | 1981-06-30 | California Institute Of Technology | Reciprocating piston pump system with screw drive |
| JPS63264105A (en) * | 1987-04-22 | 1988-11-01 | Sasakura Eng Co Ltd | Reciprocating pump for reverse-osmosis membrane concentrator |
| EP0422745A1 (en) * | 1989-10-13 | 1991-04-17 | Pieter Faber | Concrete-pumping device |
| US6290475B1 (en) * | 2000-03-30 | 2001-09-18 | Jerry M. Snow | Helical wiper for sucker rod pump |
| CN1694634A (en) * | 2002-11-05 | 2005-11-09 | 姜成一 | Sealing structure of an up-down type piston assembly for exhausting a content |
| CN201043548Y (en) * | 2007-04-23 | 2008-04-02 | 吴文胜 | Oil electricity mixed oil cylinder |
| CN201354751Y (en) * | 2009-02-19 | 2009-12-02 | 陈书文 | Absorption-assistant submersible dredging pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686050A (en) * | 2017-08-24 | 2018-02-13 | 芜湖市长江起重设备制造有限公司 | A kind of New overhead travelling crane oil pressure anticollision device, collision-prevention device |
| CN110539400A (en) * | 2019-09-09 | 2019-12-06 | 重庆贻晨兴工业设计有限责任公司 | Concrete conveying equipment and using method thereof |
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| CN102220970B (en) | 2015-02-11 |
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