2FRM6B36-3X/10QRV流量控制閥

流量控制閥

功用:通過改變閥口過流面積來調(diào)節(jié)輸出流量，從而控制執(zhí)行元件的運(yùn)動速度。

分類:節(jié)流閥、調(diào)速閥、溫度補(bǔ)償調(diào)速閥、分流集流閥。

常用節(jié)流口結(jié)構(gòu)有錐形、三角槽形、矩形、三角形等。由節(jié)流方程知，當(dāng)壓力差.定時，改變開口面積即改變液阻就可改變流量。

節(jié)流閥實(shí)質(zhì)相當(dāng)于-一個可變節(jié)流口，借助控制機(jī)構(gòu)使閥芯相對于閥體孔運(yùn)動改變閥口的過流面積。

結(jié)構(gòu)原理

主要零件有閥芯、閥體和螺母。閥體上右邊是進(jìn)油口，左邊是出油口。閥芯一端開有三角尖槽，另-端加工有螺紋，旋轉(zhuǎn)閥芯即可軸向移動改變閥口過流面積。為平衡液壓徑向力，三角槽須對稱布置。

調(diào)速閥定差減壓閥與節(jié)流閥串聯(lián)而成，用來調(diào)節(jié)通過的流量自動補(bǔ)

償負(fù)載變化的影響。

2FRM6B36-3X/10QRV流量控制閥

一般信息

 2 FRM 型流量控制閥是一種二通流量控制閥。

它用于保持流量穩(wěn)定，而不受壓力和溫度的影響。

這種閥的基本構(gòu)成為殼體 (1)、旋鈕 (2)、節(jié)流孔襯套 (3)、壓力補(bǔ)償器 (4) 和可選的單向閥。

 2FRM 6 B…MV

型流量控制閥（不帶 外部閉合， 不帶 單向閥）

從通道 A 到通道 B 的流量在節(jié)流點(diǎn) (5) 處節(jié)流。節(jié)流剖面通過轉(zhuǎn)動旋鈕 (2) 進(jìn)行設(shè)置。為確保通道 B 的流量保持穩(wěn)定而不受壓力的影響，在節(jié)流點(diǎn) (5) 的下游安裝了一個壓力補(bǔ)償器 (4)。

沒有流量流經(jīng)閥門時，壓縮彈簧 (6) 會向下按壓力補(bǔ)償器 (4) 至其停止點(diǎn)，使壓力補(bǔ)償器 (4) 保持在打開位置。有液壓油流經(jīng)閥門時，作用于通道 A 的壓力會通過節(jié)流孔 (7) 給壓力補(bǔ)償器 (4) 施加一個力。

壓力補(bǔ)償器 (4) 將進(jìn)入控制位置，直到各個力實(shí)現(xiàn)平衡。當(dāng)通道 A 的壓力上升時，壓力補(bǔ)償器 (4) 會朝閉合方向移動，直到各個力再次達(dá)到平衡。正是壓力補(bǔ)償器 (4) 的這種持續(xù)的補(bǔ)償動作才使系統(tǒng)獲得了穩(wěn)定的流量。

為了通過閥門控制兩個方向上的流量，可以在此流量控制閥下安裝一個 Z4S 6 型整流器疊加閥板。

2FRM6B36-3X/10QRV流量控制閥供應(yīng)型號

力士樂REXROTH流量控制閥

力士樂REXROTH雙向流量控制閥2FRM6A

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力士樂REXROTH二通流量控制閥2FRM6B

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力士樂REXROTH雙向流量控制閥2FRM6SB

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力士樂REXROTH二通流量控制閥2FRM

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減壓閥是采用控制閥體內(nèi)的啟閉件的開度來調(diào)節(jié)介質(zhì)的流量，將介質(zhì)的壓力降低，同時借助閥后壓力的作用調(diào)節(jié)啟閉件的開度，使閥后壓力保持在一定范圍內(nèi)，并在閥體內(nèi)或閥后噴入冷卻水，將介質(zhì)的溫度降低，這種閥門稱為減壓減溫閥。減壓閥快易優(yōu)自動化選型有收錄。該閥的特點(diǎn)，是在進(jìn)口壓力不斷變化的情況下，保持出口壓力和溫度值在一定的范圍內(nèi)。