The utility model provides an adjustable positive and negative pressure filter tank body protection device, which comprises a lower valve body. The upper end of the lower valve body is provided with an upper valve body, the bottom cavity of the lower valve body is provided with an upward positive pressure seat, the positive pressure valve seat is provided with a positive pressure valve disc, and the upper valve body middle flower plate is provided with a positive pressure valve disc and a positive pressure valve disc is arranged between the upper positive pressure valve body and the flower plate. Pressure spring; the center of the positive pressure valve disc is provided with through holes, which are all surrounded by negative pressure holes. The through holes are provided with a valve stem, and the positive pressure valve disc is connected with the valve stem at one end of the positive pressure valve seat for sealing through holes. The other end of the valve stem is provided with adjustment threads, and the adjustment threads are provided with gaskets. The upper end of the upper valve body is provided with a filter cartridge. The utility model has the advantages of simple structure and good sealing performance, can relieve pressure and balance negative pressure on the tank body when needed, and can filter the gas compensated for entering the tank body, and can adjust its positive and negative pressure.
【技术实现步骤摘要】
一种可调式正负压过滤罐体保护装置
本技术涉及生物制药、乳、食品、调味品、啤酒、饮料、精细化加工、日化用品领域,具体涉及一种可调式正负压过滤罐体保护装置。
技术介绍
在很多化工医药设备领域均会用到反应罐,但是反应罐在工作时其内部往往会产生压力,如果罐体内部压力超过其上限,就很可能会导致罐体爆裂的严重安全事故,如反应完成后罐体冷却,罐体压力过低,外部大气压则会大于罐体内部压力,这时罐体就会受到一个来自大气压的挤压力,如果内外压差达到一定数值时,罐体就会被大气压力压扁,这同样是很严重的安全事故。针对上述问题,中国专利号CN201420320785.6公开了一种正负压保护器,包括内筒、外筒、连接管、排气管,其特征在于,外筒内有液封水,水位线高于内筒底部边缘,将内筒与外筒隔开构成液封结构;内筒上部为扩径部,扩径部口径大于内筒下部口径且小于外筒直径,内筒扩径部的高度与最大沼气量时外筒水位下降的高度相等,内筒与排气管在同一轴心线上且内筒结构以该轴心线对称;连接管与外筒连通,并且连接管管口下边缘高于保护负压时外筒液封水水位;排气管与内筒连通。但是该专利存在以下问题,那就是液封只能 ...
【技术保护点】
1.一种可调式正负压过滤罐体保护装置,包括与罐体相连的下阀体,其特征在于:所述下阀体上端设有与其螺纹配合调节高度的上阀体,所述下阀体内腔底部设有朝向上阀体设置的正压阀座,所述正压阀座上设有与正压阀座配合密封的正压阀瓣,所述上阀体中段内腔设有带孔的花板,所述正压阀瓣与花板之间设有正压弹簧;所述正压阀瓣中心设有通孔,所述通孔四周均布有若干设有负压孔,所述通孔内设有可轴向滑动的阀杆,所述正压阀瓣朝向正压阀座的一端设有直径小于正压阀瓣、与阀杆相连并跟通孔相抵用于封闭通孔的负压阀瓣,所述阀杆另一端设有调节螺纹,所述调节螺纹上设有垫片及螺帽,所述阀杆上套有负压弹簧,所述负压弹簧一端支撑 ...
【技术特征摘要】
1.一种可调式正负压过滤罐体保护装置,包括与罐体相连的下阀体,其特征在于:所述下阀体上端设有与其螺纹配合调节高度的上阀体,所述下阀体内腔底部设有朝向上阀体设置的正压阀座,所述正压阀座上设有与正压阀座配合密封的正压阀瓣,所述上阀体中段内腔设有带孔的花板,所述正压阀瓣与花板之间设有正压弹簧;所述正压阀瓣中心设有通孔,所述通孔四周均布有若干设有负压孔,所述通孔内设有可轴向滑动的阀杆,所述正压阀瓣朝向正压阀座的一端设有直径小于正压阀瓣、与阀杆相连并跟通孔相抵用于封闭通孔的负压阀瓣,所述阀杆另一端设有调节螺纹,所述调节螺纹上设有垫片及螺帽,所述阀杆上套有负压弹簧,所述负压弹簧一端支撑于正压阀瓣上、另一端支撑于垫片上;所述上阀体上端设有用于放置滤芯的过滤筒,所述过滤筒顶部设有气压平衡管。2.根据权利要求1所述的一种可调式正负压过滤罐体保护装置,其特...
【专利技术属性】
技术研发人员:刘学奎,
申请(专利权)人:温州达尔捷机械制造有限公司,
类型:新型
国别省市:浙江,33
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