PTFE純(chun)模(mo)(mo)壓(ya)(ya)筒(tong)(tong)內設(she)有(you)模(mo)(mo)壓(ya)(ya)腔，所(suo)(suo)述模(mo)(mo)壓(ya)(ya)腔的(de)(de)(de)至少一端(duan)開口；所(suo)(suo)述的(de)(de)(de)模(mo)(mo)壓(ya)(ya)筒(tong)(tong)上設(she)有(you)若(ruo)干(gan)過濾(lv)(lv)通(tong)(tong)(tong)道(dao)，所(suo)(suo)述的(de)(de)(de)過濾(lv)(lv)通(tong)(tong)(tong)道(dao)包(bao)括擴(kuo)張(zhang)(zhang)段(duan)，所(suo)(suo)述的(de)(de)(de)擴(kuo)張(zhang)(zhang)段(duan)從(cong)一端(duan)向另一端(duan)逐漸擴(kuo)張(zhang)(zhang)；所(suo)(suo)述擴(kuo)張(zhang)(zhang)段(duan)的(de)(de)(de)小端(duan)朝向模(mo)(mo)壓(ya)(ya)腔設(she)置，并與(yu)模(mo)(mo)壓(ya)(ya)腔連通(tong)(tong)(tong)；所(suo)(suo)述的(de)(de)(de)模(mo)(mo)壓(ya)(ya)筒(tong)(tong)內設(she)有(you)與(yu)過濾(lv)(lv)通(tong)(tong)(tong)道(dao)連通(tong)(tong)(tong)的(de)(de)(de)排液通(tong)(tong)(tong)道(dao)。模(mo)(mo)壓(ya)(ya)筒(tong)(tong)中過濾(lv)(lv)通(tong)(tong)(tong)道(dao)的(de)(de)(de)一端(duan)向另一端(duan)擴(kuo)張(zhang)(zhang)，確保固體雜(za)質在高壓(ya)(ya)作用下(xia)進入過濾(lv)(lv)通(tong)(tong)(tong)道(dao)后，可以順(shun)利排出，不會造成過濾(lv)(lv)通(tong)(tong)(tong)道(dao)的(de)(de)(de)堵塞，提高過濾(lv)(lv)效率。