氣動暗板刀型閘閥

產(chǎn)品概述
此氣動暗板刀型閘閥是閘閥中的新品種，體積小，重量輕，輕型節(jié)材，是污水、煤漿、糖漿、泥漿、空氣、渣水混合物、供水、造紙、礦山等行業(yè)中的理想產(chǎn)品。
暗板刀型閘閥采用金屬對金屬的硬密封，或采用金屬對橡膠的軟密封。在開啟和關(guān)閉的過程中，閘板與密封面采用了特殊的設(shè)計(jì)，摩擦較少，經(jīng)久耐用。
此種刀形閘的上密封突破了常規(guī)的密封形式，采用上蓋結(jié)構(gòu)，使得上密封由大面積的矩形密封改成了小面積的圓周密封，密封性能大大提高。在圓周密封的基礎(chǔ)上，又采用了目前國際上先進(jìn)的浮動密封結(jié)構(gòu)，使得上密封達(dá)到了與管道同壽命的程度，從而整體上提高了閥門的使用壽命。
此種閘閥在手輪頂部加裝封套裝置后，可以使閥門活動部件全部處于封閉狀態(tài)，閘板和閥桿的絲桿傳動不會因潤滑油干枯而卡澀。特別適合在粉塵及干燥的惡劣環(huán)境中長期正常工作。
注：可根據(jù)使用單位的環(huán)境和要求來設(shè)計(jì)與生產(chǎn)，適合用戶的安裝和使用。
DMZ673H型氣動暗桿刀型閘閥過配用電磁閥、接近開關(guān)等附件可以完成開、關(guān)兩位置的動作控制和信號輸出，也可以完成連續(xù)動作的自動控制，閘板加裝封套裝置后，可以使閥門活動部件全部處于封閉狀態(tài)，閘板和閥桿的絲桿傳動不會因潤滑油干枯而卡澀，防止介質(zhì)外泄等優(yōu)點(diǎn)，適宜在含粉塵或焦油的煤氣管線中使用特別適合在粉塵及干燥的惡劣環(huán)境中長期正常工作。
技術(shù)參數(shù)范圍
公稱壓力：0.6MPa、1.0MPa、1.6MPa、2.5MPa、150LB
公稱通徑：DN50mm~DN2000mm NPS 2"~80"
適用溫度：-38℃~1100℃（具體溫度范圍視密封副材質(zhì)和介質(zhì)性質(zhì)而定）
連接法蘭：ANSI B16.5、GB/T9113、JB/T79、HG、SH、JIS、DIN、NF、BS
主體材料：C.I、WCB、ZG1Cr18Ni9Ti、ZG1Cr18Ni12Mo2Ti、CF8、CF8M、CF3、CF3M、2Cr25Ni20
密封形式：硬密封、軟密封
泄 漏 量：硬密封：D級（液體0.1×DNmm3/s）；軟密封：A級（零泄漏）
配套附件：安裝法蘭
氣電控制功能說明
1、采用雙電控三位五通電磁閥控制氣動刀型閘閥氣缸，采用三位開關(guān)，可控制閘閥在上限位、下限位及任意位置停留。
2、在上限位、下限位置停留時，上限位及下限位置的限位開關(guān)，發(fā)出一組常開或常閉的獨(dú)立信號觸點(diǎn)?？勺鳛闋顟B(tài)指示用。
3、漿液閥在上限位下限位置停留時，上限位及下限位置的限位開關(guān)，自動切斷電磁閥相應(yīng)控制線圈的電源。這樣閘閥在上限位及下限位置長期停留時，電磁閥的電控線圈不通電，可避免電磁線圈發(fā)熱提高電磁閥使用壽命，大大地提高了可靠性。
4、漿液閥在上限位及下限位置長期停留時；氣源被切斷不耗氣，但鎖定閥門氣缸的氣壓仍保持在氣缸中，能保證可靠停位。
5、在氣缸開關(guān)過程中，切斷控制電源，則氣缸進(jìn)出氣也同時被切斷，鎖定閥門氣缸的氣壓仍保持在氣缸中，如氣缸活塞、電磁閥及接頭無泄漏，則閘閥可在任意位置長期停留。
可選附件
1、單或雙控電磁閥（有24V、220V等電壓供選擇，必要時可選防爆電磁閥）
2、接近開關(guān)
3、氣源處理三聯(lián)件（包括減壓閥、過濾器、油霧器）
4、電/氣閥門定位器（調(diào)節(jié)型用）
Product introduction
This knife gate valve is a new generation gate valve characteristic of small construction, low weight, and high material utilization. It is an ideal product for such sectors including sewage disposal, coal slurry, syrup, sludge, air, slag-water mix, water supply, papermaking, mining, etc.
The knife gate valve adopts metal-to-metal hard sealing or metal-to-rubber soft sealing. In the processing of valve switching on/off, the gate plate and sealing face are provided with special design, featuring limited friction and high durability.
The sealing of the knife gate valve represents a breakthrough in traditional sealing form. Upper cap structure changes large area rectangular sealing face of the upper sealing to small area circular sealing, with much enhanced sealing performance. Based on circular sealing, the valve is further provided with latest floating sealing construction in the world. Thus the upper sealing shares the same useful life with pipeline, so the overall useful life of the valve increases.
After envelope is added to the top of hand wheel, all the moving parts of the gate valve will be enclosed. Therefore, the rotation of lead screws between gate plate and stem will not block because of short supply of lubricating oil. In particular, the valve is applicable for long-term service in severely dusty and dry environment.
Note: The valve could be designed and manufactured based on client's site conditions and requirements for better installation and application.
DMZ673H Pneumatic non-rising stem type knife gate valve with solenoid valve, close to switch, etc, can complete the action of two position control and signal output, also can complete automatic control of continuous motion, after installation of sleeve device gate, all moving parts in a closed state, can make the valve disc and stem lead screw drive will not unsmooth by lubricating oil dry, to prevent leakage of medium, suitable for use in gas pipeline containing dust or tar is especially suitable for long-term work in dust and dry environment.
Technical Parameter Range
Nominal pressure:0.6MPa、1.0MPa、1.6MPa、2.5MPa、150LB
Nominal diameter:DN50mm~DN2000mm NPS 2"~80"
Suitable temperature:-38℃~1100℃（Range of temperature subject to the material of sealing and property of medium）
Flange drilling:ANSI B16.5、GB/T9113、JB/T79、HG、SH、JIS、DIN、NF、BS
Main materials:C.I、WCB、ZG1Cr18Ni9Ti、ZG1Cr18Ni12Mo2Ti、CF8、CF8M、CF3、CF3M、2Cr25Ni20
Seal type:Stainless steel hard seal、Teflon soft seal
Leakage:Stainless steel hard seal:Grade D(Liquid0.1×DNmm3/s)、Teflon soft seal:Grade A(Zero Leakage)
Accessories:Flange
Gas-electric control function
1、Adopts double electric control three five-way solenoid valve control type pneumatic knife gate valve cylinder, adopt three switch, can control valve in the ceiling, floor and any place to stay.
2、Stay in the ceiling, floor, the upper limit and lower limit position limit switch, send out a set of normally open or normally closed contact of independent signals. Can be used as a status indication.
3、Slurry valves at a UCLA's position, the upper limit and lower limit position limit switch, automatic cut off the power of the corresponding control solenoid valve coil. This gate valve a long stay in the upper limit and lower limit, the electromagnetic valve of the electric coil not electricity, can avoid electromagnetic coil heat to improve the service life of the solenoid valve, reliability has been greatly increased.
4、Slurry valves when the upper limit and lower limit position long stay; Air supply is cut off gas consumption, but locking valve cylinder pressure remained in the cylinder, can guarantee the reliable parking.
5、In the process of the cylinder switch, cut off the control power, the cylinder in and out of gas at the same time also is cut off, lock the valve cylinder pressure remained in the cylinder, piston cylinder, solenoid valve and joint without leakage, the gate valve can be a long stay in any position.
Optional accessories
1、Single-control or double-control solenoid valve (24V, 220V, etc. optional voltage; explosion-proof solenoid valve is optional when necessary)
2、Proximity switch
3、Air supply processing triple-connection unit (including air reducing valve, filter, and atomized lubricator)
4、Electric/pneumatic valve positioner (for regulating type use)

主要外形及連接尺寸Profile and connection dimension											單位Unit:mm
PN	DN	L	D	D1	D2	H	N-M	PN	DN	L	D	D1	D2	H	N-M
0.6	150	57	280	240	210	680	8-20	1.0	150	57	285	240	210	680	8-20
	200	70	335	295	265	820	8-20		200	70	340	295	265	820	12-20
	250	70	390	350	320	930	12-20		250	70	405	355	310	930	12-22
	300	76	440	400	368	1075	12-20		300	76	460	410	375	1075	12-22
	350	76	500	460	428	1249	16-20		350	76	520	470	435	1249	16-22
	400	89	565	515	482	1480	16-22		400	89	580	525	485	1480	16-27
	450	89	615	565	532	1560	20-22		450	89	640	585	545	1560	20-27
	500	114	670	620	585	1680	20-22		500	114	715	650	609	1680	20-30
	600	114	780	725	685	2150	20-27		600	114	840	770	720	2150	20-36
	700	130	895	840	800	2800	24-27		700	130	910	840	788	2800	24-36
	800	130	1010	950	898	3200	24-30		800	130	1025	950	895	3200	24-36
	900	140	1110	1050	1005	3600	28-30		900	140	1125	1050	998	3600	28-36
	1000	216	1220	1160	1115	4000	28-30		1000	216	1255	1170	1110	4000	28-42
	1200	254	1450	1380	1325	4500	32-36		1200	254	1485	1390	1325	4500	32-48