進口溢流閥推薦德國洛克

一、進口溢流閥技術參數(shù)：

1、公稱通徑：DN15-DN80

2、工作壓力： 0.6~40.0Mpa

3、適用介質：天然氣、水、蒸汽、液化氣、煤氣、氫氣、氮氣、氧氣等

4、連接方式：內螺紋、外螺紋、法蘭、焊接、對焊、承插焊、卡套、卡箍。

5、適用溫度：-196℃-600℃

6、閥體材質：鑄鐵、鑄鋼、不銹鋼

7、閥芯材質：鑄鋼、不銹鋼、合金鋼、硬質合金鋼、高溫鋼等

8、標準：DIN,SMS,3A,ISO,IDF

9、應用：乳制品,食品,飲料,啤酒,制藥等

1. Nominal diameter: dn15-dn80

2. Working pressure: 0.6 ~ 40.0mpa

3. Applicable media: natural gas, water, steam, liquefied gas, gas, hydrogen, nitrogen, oxygen, etc

4. Connection mode: internal thread, external thread, flange, welding, butt welding, socket welding, ferrule and clamp.

5. Applicable temperature: - 196 ℃ - 600 ℃

6. Valve body material: cast iron, cast steel, stainless steel

7. Valve core material: cast steel, stainless steel, alloy steel, hard alloy steel, high temperature steel, etc

8. Standard: DIN, SMS, 3a, ISO, IDF

9. Application: dairy products, food, beverage, beer, pharmaceutical, etc

二、進口溢流閥描述：

德國《LOCKE》洛克進口溢流閥，一種液壓壓力控制閥。在液壓設備中主要起定壓溢流作用和安全保護作用。定壓溢流作用：在定量泵節(jié)流調節(jié)系統(tǒng)中，定量泵提供的是恒定流量。當系統(tǒng)壓力增大時，會使流量需求減小。此時溢流閥開啟，使多余流量溢回油箱，保證溢流閥進口壓力，即泵出口壓力恒定。

Locke imported relief valve is a kind of hydraulic pressure control valve. In hydraulic equipment, it mainly plays the role of constant pressure overflow and safety protection. Constant pressure overflow function: in quantitative pump throttling regulation system, quantitative pump provides constant flow. When the system pressure increases, the flow demand will decrease. At this time, the overflow valve is opened to overflow the excess flow back to the oil tank to ensure the inlet pressure of the overflow valve, that is, the outlet pressure of the pump is constant.

三、進口溢流閥工作原理：

一種液壓壓力控制閥，在液壓設備中主要起定壓溢流作用，穩(wěn)壓，系統(tǒng)卸荷和安全保護作用。

定壓溢流作用：在定量泵節(jié)流調節(jié)系統(tǒng)中，定量泵提供的是恒定流量。當系統(tǒng)壓力增大時，會使流量需求減小。此時溢流閥開啟，使多余流量溢回油箱，保證溢流閥進口壓力，即泵出口壓力恒定（閥口常隨壓力波動開啟）。

穩(wěn)壓作用：溢流閥串聯(lián)在回油路上，溢流閥產生背壓，運動部件平穩(wěn)性增加。

系統(tǒng)卸荷作用：在溢流閥的遙控口串接溢小流量的電磁閥，當電磁鐵通電時，溢流閥的遙控口通油箱，此時液壓泵卸荷。溢流閥此時作為卸荷閥使用。

安全保護作用：系統(tǒng)正常工作時，閥門關閉。只有負載超過規(guī)定的極限（系統(tǒng)壓力超過調定壓力）時開啟溢流，進行過載保護，使系統(tǒng)壓力不再增加（通常使溢流閥的調定壓力比系統(tǒng)最高工作壓力高10%～20%）。

實際應用中一般有：作卸荷閥用，作遠程調壓閥，作高低壓多級控制閥，作順序閥，用于產生背壓（串在回油路上）。

溢流閥一般有兩種結構：1、直動型溢流閥 。2、先導式溢流閥。

對溢流閥的主要要求：調壓范圍大，調壓偏差小，壓力振擺小，動作靈敏，過載能力大，噪聲小。

The utility model relates to a hydraulic pressure control valve, which mainly plays the functions of constant pressure overflow, stable pressure, system unloading and safety protection in the hydraulic equipment.

Constant pressure overflow function: in quantitative pump throttling regulation system, quantitative pump provides constant flow. When the system pressure increases, the flow demand will decrease. At this time, the overflow valve is opened to make the excess flow overflow back to the oil tank, so as to ensure the inlet pressure of the overflow valve, i.e. the outlet pressure of the pump is constant (the valve port is often opened with the pressure fluctuation).

Pressure stabilizing effect: the overflow valve is connected in series on the oil return road, which produces back pressure and increases the stability of moving parts.

Unloading function of the system: the remote control port of the overflow valve is connected with the solenoid valve with small overflow flow in series. When the electromagnetic iron is energized, the remote control port of the overflow valve is connected with the oil tank, and the hydraulic pump is unloaded at this time. The overflow valve is now used as a unloading valve.

Safety protection function: when the system is in normal operation, the valve is closed. Only when the load exceeds the specified limit (the system pressure exceeds the set pressure), open the overflow, carry out overload protection, and make the system pressure no longer increase (usually make the set pressure of the overflow valve 10% - 20% higher than the maximum working pressure of the system).

In practical application, it is generally used as unloading valve, remote pressure regulating valve, high and low pressure multistage control valve and sequence valve to generate back pressure (in series on the oil return road).

Relief valve generally has two structures: 1. Direct acting relief valve. 2. Pilot operated relief valve.

The main requirements for relief valve: large pressure regulating range, small pressure regulating deviation, small pressure swing, sensitive action, large overload capacity, small noise.