CN202883548U - Grate cooler buffering device - Google Patents

Grate cooler buffering device Download PDF

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Publication number
CN202883548U
CN202883548U CN 201220576829 CN201220576829U CN202883548U CN 202883548 U CN202883548 U CN 202883548U CN 201220576829 CN201220576829 CN 201220576829 CN 201220576829 U CN201220576829 U CN 201220576829U CN 202883548 U CN202883548 U CN 202883548U
Authority
CN
China
Prior art keywords
valve
buffering
plate type
grate cooler
oil
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.)
Active
Application number
CN 201220576829
Other languages
Chinese (zh)
Inventor
高锦
孙喜生
张立旺
高辉
马群博
尹征
刘涛
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.)
Tangshan Dunshi Electric Co Ltd
Original Assignee
Tangshan Dunshi Electric Co Ltd
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 Tangshan Dunshi Electric Co Ltd filed Critical Tangshan Dunshi Electric Co Ltd
Priority to CN 201220576829 priority Critical patent/CN202883548U/en
Application granted granted Critical
Publication of CN202883548U publication Critical patent/CN202883548U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a grate cooler buffering device and belongs to the technical field of grate cooler hydraulic system devices. The grate cooler buffering device comprises a plate type overflow valve (1), a plate type check valve (2), a pilot operated compound relief valve (3) and a proportional directional valve (4). The plate type overflow valve (1), the plate type check valve (2), the pilot operated compound relief valve (3) and the proportional directional valve (4) form a valve block which is arranged between an outlet of a hydraulic pump connected with an oil tank and a hydraulic cylinder. The plate type overflow valve (1) is arranged at the oil supply side of the grate cooler buffering device, and the plate type check valve (2) is arranged at the oil return side of the grate cooler buffering device. The grate cooler buffering device has the advantages that the plate type overflow valve and the plate type check valve are respectively arranged on the oil supply side and the oil return side, and the grate cooler buffering device is compact and stable in structure, and good in buffering effect, and can meet scenic requirements.

Description

A kind of grate-cooler damping device
Technical field
The utility model relates to a kind of grate-cooler damping device, belongs to the hydraulic system of grate cooler equipment technical field.
Background technique
At present, hydraulic system of grate cooler utilizes oil hydraulic pump that hydraulic oil is extracted out from fuel tank, by pump discharge P end oil is injected proportional reversing valve through the cone valve unit, proportional reversing valve work, by the continuous conversion proportion selector valve of program control main valve plug position, fluid is injected active chamber A or B, the thereupon rod chamber of injection liquid cylinder pressure or rodless cavity, the piston that promotes oil hydraulic cylinder moves reciprocatingly, in the commutation process of proportional reversing valve, system pressure can raise moment, present employed system utilizes pilot operated compound relief valve, unload when system pressure is higher than 20MPa, but this device can not be cut down the impact that instantaneous pressure produces at first turning position of pipeline (oil cylinder end) fast, the oil pipe cracking still can appear in the scene, the problems such as oil cylinder damage.
The model utility content
The utility model purpose provides a kind of grate-cooler damping device, by installing respectively board-like relief valve and plate-type non-return valve additional in confession, oil return both sides, proportional reversing valve produces high pressure in the moment of commutation, when pressure arrives 25MPa, board-like relief valve is opened, and fluid enters rod chamber or rodless cavity through the opposite side plate-type non-return valve, forms the closed cycle loop of fluid, reach the purpose of pressure release with this, solve the problems referred to above that exist in the background technique.
The technical solution of the utility model is: a kind of grate-cooler damping device, comprise board-like relief valve, plate-type non-return valve, pilot operated compound relief valve and proportional reversing valve, four consist of the valve piece, be arranged between the hydraulic pressure delivery side of pump and oil hydraulic cylinder that is connected with fuel tank, described board-like relief valve is arranged on the fuel feeding side, and plate-type non-return valve is arranged on the oil return side.
The beneficial effects of the utility model are: by installing respectively board-like relief valve and plate-type non-return valve additional in confession, oil return both sides, buffer unit structure is compact, stable, good buffer effect, can satisfy on-the-spot needs.
Description of drawings
Fig. 1 is plan view of the present utility model;
Fig. 2 is plan view of the present utility model;
Among the figure: board-like relief valve 1, plate-type non-return valve 2, pilot operated compound relief valve 3, proportional reversing valve 4.
Embodiment
Below in conjunction with accompanying drawing, by embodiment the utility model is described further.
A kind of grate-cooler damping device, comprise board-like relief valve 1, plate-type non-return valve 2, pilot operated compound relief valve 3 and proportional reversing valve 4, four consist of the valve piece, be arranged between the hydraulic pressure delivery side of pump and oil hydraulic cylinder that is connected with fuel tank, described board-like relief valve 1 is arranged on the fuel feeding side, and plate-type non-return valve 2 is arranged on the oil return side.
When proportional reversing valve 4 commutates to left or right position by meta, the oil cylinder oil return produces instantaneous pressure, this high pressure oil directly impacts board-like relief valve 1, when pressure during more than or equal to 25MPa, board-like relief valve 1 is opened, high pressure oil through board-like relief valve 1, through offside plate-type non-return valve 2 to oil cylinder rodless cavity, form buffer loop; When pressure is lower than 25MPa and is greater than or equal to 20MPa, fluid through plate-type non-return valve 2, pilot operated compound relief valve 3 to return line; When pressure is lower than 20MPa, fluid through plate-type non-return valve 2 to return line.

Claims (1)

1. grate-cooler damping device, it is characterized in that: comprise board-like relief valve (1), plate-type non-return valve (2), pilot operated compound relief valve (3) and proportional reversing valve (4), four consist of the valve piece, be arranged between the hydraulic pressure delivery side of pump and oil hydraulic cylinder that is connected with fuel tank, described board-like relief valve (1) is arranged on the fuel feeding side, and plate-type non-return valve (2) is arranged on the oil return side.
CN 201220576829 2012-11-05 2012-11-05 Grate cooler buffering device Active CN202883548U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220576829 CN202883548U (en) 2012-11-05 2012-11-05 Grate cooler buffering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220576829 CN202883548U (en) 2012-11-05 2012-11-05 Grate cooler buffering device

Publications (1)

Publication Number Publication Date
CN202883548U true CN202883548U (en) 2013-04-17

Family

ID=48074981

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220576829 Active CN202883548U (en) 2012-11-05 2012-11-05 Grate cooler buffering device

Country Status (1)

Country Link
CN (1) CN202883548U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104196715A (en) * 2014-08-21 2014-12-10 天津市通洁高压泵制造有限公司 Power end lubricating oil circulation cooling system with overflow function
CN112628223A (en) * 2021-01-08 2021-04-09 江苏指南润滑液压科技有限公司 Intelligent grate cooler hydraulic station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104196715A (en) * 2014-08-21 2014-12-10 天津市通洁高压泵制造有限公司 Power end lubricating oil circulation cooling system with overflow function
CN112628223A (en) * 2021-01-08 2021-04-09 江苏指南润滑液压科技有限公司 Intelligent grate cooler hydraulic station

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