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CN202108525U - 立柱快放安全阀 - Google Patents

立柱快放安全阀 Download PDF

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Publication number
CN202108525U
CN202108525U CN2011201752233U CN201120175223U CN202108525U CN 202108525 U CN202108525 U CN 202108525U CN 2011201752233 U CN2011201752233 U CN 2011201752233U CN 201120175223 U CN201120175223 U CN 201120175223U CN 202108525 U CN202108525 U CN 202108525U
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spring
shell
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Inventor
洪凌海
李祥洪
李竹洋
陈建征
郑福云
陈永华
王琛
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Hydraulic Limited by Share Ltd
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FENGLONG HYDRAULIC Co Ltd
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Abstract

一种立柱快放安全阀,它包括阀体、快放阀壳、一级阀壳和快放外壳,快放阀壳上开有一排快放排液孔和安装密封圈的密封槽,一级阀壳上开有一排快放排液孔,快放阀壳右侧依次套进快放弹簧、快放阀芯、丝堵和阀体,丝堵上开有流液孔,快放阀壳左侧依次套进密封圈、一级阀芯、一级阀壳、弹簧座、一级弹簧、调压螺丝,一级弹簧一端顶在调压螺丝上、另一端顶在弹簧座上,一级阀芯与弹簧座接触。它性能可靠,结构紧凑,动态响应快,能保证煤矿综采工作面液压支架的支柱具有恒阻工作特性和可缩性。

Description

立柱快放安全阀
技术领域
本实用新型涉及一种安全阀,尤其是指一种用于煤矿综采工作面液压支架立柱快放安全阀。 
背景技术
在现有技术中,安全阀的结构多种多样。如中国专利公布的“一种用于公称压力为40MPa的安全阀”(ZL 200520003856.0,公告日:2006.6.28),它包括阀壳与阀体,阀壳上开有溢流孔并由胶套封住,从阀壳右端依次装进阀座、阀芯、拧紧阀体,阀体端口设置过滤器由弹性挡圈固定,阀芯上有溢流小孔,从阀壳左端依次装进弹簧座、弹簧、拧入调压螺丝。 
安全阀是保护液压支架安全的关键部件,性能必须可靠。随着综合机械化采煤事业的发展,由于以往的安全阀结构相对复杂,动态响应慢,当顶板来冲击压力时,往往使立柱、顶梁等零部件损坏,影响井下正常采煤。 
实用新型内容
本实用新型的目的在于提供一种立柱快放安全阀,它性能可靠,结构紧凑,动态响应快,能保证煤矿综采工作面液压支架的支柱具有恒阻工作特性和可缩性。 
为达到上述目的,本实用新型采取的解决方案是:一种立柱快放安全阀,它包括阀体、快放阀壳、一级阀壳和快放外壳,快放阀壳上开有一排快放排液孔和安装密封圈的密封槽,一级阀壳上开有一排快放排液孔,快放阀壳右侧依次套进快放弹簧、快放阀芯、丝堵和阀体,丝堵上开有流液孔,快放阀壳左侧依次套进密封圈、一级阀芯、一级阀壳、弹簧座、一级弹簧、调压螺丝,一级弹簧一端顶在调压螺丝上、另一端顶在弹簧座上,一级阀芯与弹簧座接触。 
本实用新型产品和立柱、推移、侧护等千斤顶的下腔连接,当千斤顶工作的顶板来压使活柱下缩,当千斤顶下腔液体压力超过弹簧压力时,一级阀芯在压力推动下向左移动,一级阀芯上卸载孔移过密封圈,高压工作液从一级阀壳上排液孔排出,使快放阀芯腔压力变低,快放阀芯受阀体腔液压里的作用向左移动,快放腔开启,液体从快发阀壳瞬间流出,使千斤顶下腔的工作液压力瞬间降低,当千斤顶下腔液压力小于一级弹簧压力时,一级阀芯复位恢复原来密封状态,快放阀芯两端压力平衡,也恢复原来的密封状态。它性能可靠,机构紧凑,动态响应快,具有二级卸载结构,能保证煤矿综采工作面液压支架的千斤顶具有恒阻工作特性和可缩性。 
附图说明
图1是本实施例的主视剖面结构示意图。 
图中:1、阀体,2、快放阀壳,3、丝堵,4、快放外壳,5、快放阀芯,6、快放弹簧,7、一级阀芯,8、密封圈,9、弹簧座,10、一级弹簧、11一级阀壳、12调压螺丝。 
具体实施方式
下面结合实施例及其附图对本实用新型再作描述。 
参见图1,一种立柱快放安全阀,它包括阀体1、快放阀壳2、一级阀壳11和快放外壳4,快放阀壳2上开有一排快放排液孔和安装密封圈8的密封槽,一级阀壳11上开有一排快放排液孔,快放阀壳2右侧依次套进快放弹簧6、快放阀芯5、丝堵3和阀体1,丝堵3上开有流液孔,快放阀壳2左侧依次套进密封圈8、一级阀芯7、一级阀壳11、弹簧座9、一级弹簧10、调压螺丝12,一级弹簧10一端顶在调压螺丝12上、另一端顶在弹簧座9上,一级阀芯7与弹簧座9接触。 

Claims (1)

1.一种立柱快放安全阀,它包括阀体(1)、快放阀壳(2)、一级阀壳(11)和快放外壳(4),其特征在于:快放阀壳(2)上开有一排快放排液孔和安装密封圈(8)的密封槽,一级阀壳(11)上开有一排快放排液孔,快放阀壳(2)右侧依次套进快放弹簧(6)、快放阀芯(5)、丝堵(3)和阀体(1),丝堵(3)上开有流液孔,快放阀壳(2)左侧依次套进密封圈(8)、一级阀芯(7)、一级阀壳(11)、弹簧座(9)、一级弹簧(10)、调压螺丝(12),一级弹簧(10)一端顶在调压螺丝(12)上、另一端顶在弹簧座(9)上,一级阀芯(7)与弹簧座(9)接触。 
CN2011201752233U 2011-05-22 2011-05-22 立柱快放安全阀 Expired - Fee Related CN202108525U (zh)

Priority Applications (1)

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CN2011201752233U CN202108525U (zh) 2011-05-22 2011-05-22 立柱快放安全阀

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CN202108525U true CN202108525U (zh) 2012-01-11

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C56 Change in the name or address of the patentee

Owner name: FENGLONG HIGH-TECH HYDRAULIC CO., LTD.

Free format text: FORMER NAME: FENGLONG HYDRAULIC CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: Nineteen Yueqing Economic Development Zone, Zhejiang, Wei Road, 325600

Patentee after: Hydraulic Limited by Share Ltd

Address before: Nineteen Yueqing Economic Development Zone, Zhejiang, Wei Road, 325600

Patentee before: Fenglong Hydraulic Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120111

Termination date: 20200522

CF01 Termination of patent right due to non-payment of annual fee