The utility model provides a pin-less internal transmission medium-line butterfly valve, which comprises a valve body, a valve seat, a valve shaft and a valve plate. The valve shaft is sleeved with a connecting shaft sleeve through the valve seat. The outer wall of the valve shaft is provided with an outer shoulder of the valve shaft, and the outer shoulder of the valve shaft is provided with a circumferentially spaced valve shaft rib; and the inner wall of the valve plate is provided with a connecting shaft sleeve. A valve plate inner shoulder is provided with a circumferentially spaced valve plate convex edge arranged on the inner shoulder of the valve plate; the bottom end of the shaft sleeve convex edge is opposite to the valve shaft outer shoulder and the valve plate inner shoulder, and the bottom end of the connecting shaft sleeve is provided with a shaft sleeve convex edge clamped with the valve shaft convex edge and the valve plate convex edge respectively. In this application, the valve plate and the valve shaft are clamped with a connecting sleeve to reduce the leakage point of the valve and improve the sealing performance of the valve; the clamping connection structure is located inside the valve plate to ensure that the valve shaft rotation drives the valve plate rotation, and avoids the valve shaft displacement, thus improving the safety of the valve.
【技术实现步骤摘要】
无销内传动中线蝶阀
本技术涉及工业阀门制造领域,尤其涉及一种无销内传动中线蝶阀。
技术介绍
蝶阀主要应用于城市供水、石油化工、海水淡化、医疗器械等领域,分为中线对夹式蝶阀、中线法兰式蝶阀、单偏心蝶阀、双偏心蝶阀及三偏心蝶阀,蝶阀的结构不同所以利用领域也不同。中线蝶阀主要由:阀体、阀座、阀板、阀轴、销子、密封圈以及轴套组成。阀板与阀轴用锥销连接,增加了阀门泄露点,降低了阀门密封性能;销子一旦脱落,阀轴有飞出的可能,而且零部件没有通用性,无法实现现场更换零部件。
技术实现思路
本技术的目的是为了提供一种无销内传动中线蝶阀,阀板与阀轴通过连接轴套卡固连接,提高了阀门密封性能。为了实现上述目的,本技术提出一种无销内传动中线蝶阀,包括阀体、阀座、阀轴和阀板,所述阀轴穿过所述阀座处套设有连接轴套,所述阀轴外侧壁上设有阀轴外凸肩,所述阀轴外凸肩上设有周向间隔排设的阀轴凸棱;所述阀板内侧壁上设有阀板内凸肩,所述阀板内凸肩上设有周向间隔排设的阀板凸棱;所述轴套凸棱的底端与所述阀轴外凸肩和阀板内凸肩相抵,且所述连接轴套底端设有分别与所述阀轴凸棱和阀板凸棱卡合的轴套凸棱。进一步地,在所述的无销内传动中线蝶阀中,所述阀轴外凸肩与阀板内凸肩的底端齐平。进一步地,在所述的无销内传动中线蝶阀中,所述阀轴凸棱和阀板凸棱的棱边在同一平面上,即所述阀轴凸棱和阀板凸棱同心等圆心角排设。进一步地,在所述的无销内传动中线蝶阀中,所述阀座上设有方便所述阀轴贯穿的通孔,所述通孔的直径与所述连接轴套的直径一致,所述阀体内方便所述阀轴贯穿的通道,所述通道的直径与所述阀轴的直径一致。与现有技术相比,本技术的有益效果 ...
【技术保护点】
1.一种无销内传动中线蝶阀,其特征在于,包括阀体、阀座、阀轴和阀板,所述阀轴穿过所述阀座处套设有连接轴套,所述阀轴外侧壁上设有阀轴外凸肩,所述阀轴外凸肩上设有周向间隔排设的阀轴凸棱;所述阀板内侧壁上设有阀板内凸肩,所述阀板内凸肩上设有周向间隔排设的阀板凸棱;所述轴套凸棱的底端与所述阀轴外凸肩和阀板内凸肩相抵,且所述连接轴套底端设有分别与所述阀轴凸棱和阀板凸棱卡合的轴套凸棱。
【技术特征摘要】
1.一种无销内传动中线蝶阀,其特征在于,包括阀体、阀座、阀轴和阀板,所述阀轴穿过所述阀座处套设有连接轴套,所述阀轴外侧壁上设有阀轴外凸肩,所述阀轴外凸肩上设有周向间隔排设的阀轴凸棱;所述阀板内侧壁上设有阀板内凸肩,所述阀板内凸肩上设有周向间隔排设的阀板凸棱;所述轴套凸棱的底端与所述阀轴外凸肩和阀板内凸肩相抵,且所述连接轴套底端设有分别与所述阀轴凸棱和阀板凸棱卡合的轴套凸棱。2.根据权利要求1所述的无销内传动中线...
【专利技术属性】
技术研发人员:黄凤娟,
申请(专利权)人:上海埃维玛阀门有限公司,
类型:新型
国别省市:上海,31
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