滑道滾球式止回閥（如HQ41X型）是一種結(jié)構(gòu)出彩具創(chuàng)新性的止回閥，它有效顛覆了傳統(tǒng)閥瓣的設(shè)計(jì)，采用橡膠包皮的滾動(dòng)球作為啟閉件，在冷水、熱水、工業(yè)及生活污水管網(wǎng)中展現(xiàn)出了出眾的性能。

The slide ball type check valve (such as HQ41X type) is a highly innovative check valve that completely overturns the traditional valve disc design. It uses a rubber wrapped rolling ball as the opening and closing element, demonstrating excellent performance in cold water, hot water, industrial and domestic sewage pipelines.

其工作原理十分巧妙：當(dāng)介質(zhì)正向流動(dòng)時(shí)，流體推力推動(dòng)滾球在閥體的整體式滑道上向上滾動(dòng)，閥門(mén)開(kāi)啟；當(dāng)介質(zhì)停止或倒流時(shí)，滾球在自重和反向水壓的作用下，沿著滑道平穩(wěn)滾落至閥座，實(shí)現(xiàn)密封。由于滾球是在滑道上作純滾動(dòng)運(yùn)動(dòng)，摩擦阻力出彩小，動(dòng)作出彩其靈敏，且關(guān)閉時(shí)實(shí)現(xiàn)了“消聲式”閉合，從根本上杜絕了水錘現(xiàn)象的產(chǎn)生。

Its working principle is very clever: when the medium flows forward, the fluid thrust pushes the rolling ball to roll upward on the integral slide of the valve body, and the valve opens; When the medium stops or flows back, the rolling ball smoothly rolls down the slide to the valve seat under the action of its own weight and reverse water pressure, achieving sealing. Due to the pure rolling motion of the rolling ball on the slide, the friction resistance is minimal, the action is extremely sensitive, and it achieves a "silent" closure when closed, fundamentally eliminating the occurrence of water hammer phenomenon.

滑道滾球式止回閥的另一大優(yōu)勢(shì)是其全水流通道的無(wú)阻礙設(shè)計(jì)。與旋啟式止回閥相比，它的水頭損失可減小50%以上，流量大且不易被污水中的雜質(zhì)卡阻。此外，它不受安裝方向的限制，水平或垂直安裝均可。這種閥門(mén)非常適合安裝在潛水排污泵的出水口處，不僅能有效防止倒流，還能避免水錘對(duì)水泵葉輪的損害，是市政污水處理與建筑排水系統(tǒng)中兼顧快捷與靜音的理想選擇。

Another major advantage of the slide ball check valve is its unobstructed design of the entire water flow channel. Compared with the rotary check valve, its head loss can be reduced by more than 50%, and it has a large flow rate and is not easily blocked by impurities in sewage. In addition, it is not limited by the installation direction and can be installed horizontally or vertically. This type of valve is particularly suitable for installation at the outlet of submersible sewage pumps. It not only effectively prevents backflow, but also avoids damage to the pump impeller caused by water hammer. It is an ideal choice for efficient and quiet municipal sewage treatment and building drainage systems.

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