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Van điện từ, van nước,ZQDF normally closed 24V normally open high temperature steam heat transfer oil cast steel flange solenoid valve 220V valve DN20-50
Tình trạng sản phẩm:
ZQDF(Y) steam (for liquid) solenoid valve is an actuator for industrial process automation control system. It can automatically open or close the valve after receiving the electronic control signal to realize the on/off or flow regulation control of the fluid medium in the pipeline. Thus, the parameters such as temperature, flow, pressure, etc. in the system are automatically adjusted or remotely controlled.
This series of solenoid valve products can be widely used in textile, printing and dyeing, chemical, plastics, rubber, pharmaceutical, food, building materials, machinery, electrical appliances, surface treatment and other production and scientific research departments as well as bathroom, canteen, air conditioning and other people's daily life facilities. ZQDF series is mainly used for the control of air, steam, gas and other gaseous media; ZQDF-Y series is mainly used for liquid media such as tap water, distilled water, frozen brine, electroplating waste liquid, and also for oils with viscosity less than 4°E.
Second, steam solenoid valve model description
Third, steam
Solenoid valve product features
Corrosion resistance: The main components are valve plugs, the valve body is made of stainless steel and cast steel, and the corrosion resistance is good.
Heat resistance: The electromagnetic and sealing parts are all made of special high temperature resistant electrical materials and sealing materials, and effective heat insulation measures are adopted.
Wear-resistance: Reasonable material selection, clever use of fluid lubrication between the valve plug and the valve body to reduce wear.
Resistance to condensation: The cold north water of the steam pipe is an important factor affecting the action of the steam solenoid valve. The valve is not affected by the condensed water.
Fourth, the structure and principle of steam solenoid valve
The valve is a step-by-step direct pilot type solenoid valve, which can be divided into a normally closed solenoid valve and a normally open solenoid valve according to different opening and closing states when the power is off. Normally closed solenoid valve, after the coil is energized, the armature first lifts the auxiliary valve plug under the action of electromagnetic force, and the fluid on the main valve cup flows away through the auxiliary valve, reducing the pressure acting on the main valve cup, when the main valve When the pressure on the valve cup is reduced to a certain value, the armature drives the main valve cup and uses the pressure difference to open the main valve cup and the medium circulates. After the coil is de-energized, the electromagnetic force disappears and the armature is reset by its own weight. At the same time, depending on the medium pressure, the main and auxiliary valves are tightly closed. Normally open solenoid valve, after the coil is energized, the moving iron core moves down due to the suction force, the auxiliary valve plug is pressed down, the auxiliary valve is closed, the pressure in the main valve valve cup rises, and when the pressure rises to a certain value, the main valve cup The pressure difference between the upper and lower sides is the same. Due to the electromagnetic force, the moving iron core loses under the main valve valve cup, the main valve seat is pressed, and the valve is closed. When the coil is de-energized, the electromagnetic suction force is zero, the auxiliary valve plug and the iron core are lifted up by the spring action, the auxiliary valve is opened, and the fluid on the main valve valve cup flows away through the auxiliary valve, reducing the effect on the main valve valve cup. The pressure, when the pressure on the main valve cup is reduced to a certain value, the main valve cup is pushed up by the pressure difference, the main valve is opened, and the medium is circulated.
V.
Main technical parameters of steam solenoid valve
Sixth, steam solenoid valve dimensions and connection form
Seven, steam solenoid valve installation instructions
1. When installing, the solenoid valve coil is upward and maintains the vertical position. The arrow or mark on the solenoid valve should be consistent with the flow direction of the pipeline, and should not be installed in places with splashing water or water leakage.
2. The working medium of the solenoid valve should be clean and free of particulate impurities. The dirt and filter on the surface of the solenoid valve internal parts should be cleaned regularly.
3. When the solenoid valve is faulty, in order to isolate the solenoid valve in time and ensure the normal operation of the system, it is better to install a bypass device (Figure 1).
4. In the pipeline system, the diameter of the solenoid valve installed on the branch road should be smaller than the diameter of the main pipeline valve (Figure 2).
5. Before installing the solenoid valve, the pipe must be cleaned. It is recommended to install a filter in front of the valve and a steam pipe to install the trap.
6. The valve cannot be installed in the low recess of the pipeline to prevent the condensation of steam, impurities and the like from being deposited in the valve.
7, the ordinary type can not be used in explosive places.
8. In the case of insufficient rigidity of the pipeline, it is recommended to fix the pipe in front of the valve with a bracket to avoid vibration caused by the solenoid valve working.
9. Before installation, pay attention to see the product label, read the instruction manual carefully, and judge whether the product meets the conditions of use.
10. A pressure gauge should be installed on the pipe before and after the solenoid valve to observe the pipe pressure.
Eight, steam solenoid valve maintenance
1. It is recommended to use a unit to assign someone to take care of the maintenance.
2. After the solenoid valve is installed, it is necessary to pass the medium experiment action several times. After confirming the normal condition, it can be put into formal use.
3. The dirt inside and outside the large valve and the suction surface should be cleaned regularly, taking care not to damage the sealing surface.
4. When the solenoid valve is not used for a long time, the manual valve before the valve should be closed. When re-enabling, the steam solenoid valve should remove the condensed water and make several trials. After the switch is normal, it can be put into use.
5. When the solenoid valve is removed from the pipeline, the internal parts should be wiped clean and stored with compressed air.
6. When the use time is long, if the seal between the piston and the valve seat is not good, the piston sealing surface can be re-polished and then grinded with the valve seat.
7. When working, pay attention to the pressure gauge before and after the valve, the working pressure should not exceed the rated pressure, and the working pressure difference must be within the rated pressure difference. When the working pressure exceeds the rated pressure or the working pressure difference exceeds the rated pressure difference, the solenoid valve should be stopped, and the front and rear manual valves should be closed to prevent the solenoid valve from exploding and leaking.
IX. Steam solenoid valve ordering instructions
1. Please specify the model number, nominal diameter, nominal pressure, working medium, working pressure difference, medium temperature, power supply voltage and frequency, and medium viscosity when ordering.
3. The opening time of the valve is more than 12 hours. Please use the normally open solenoid valve. When there is flammable and explosive material around the use environment, please use explosion-proof solenoid valve.
This series of solenoid valve products can be widely used in textile, printing and dyeing, chemical, plastics, rubber, pharmaceutical, food, building materials, machinery, electrical appliances, surface treatment and other production and scientific research departments as well as bathroom, canteen, air conditioning and other people's daily life facilities. ZQDF series is mainly used for the control of air, steam, gas and other gaseous media; ZQDF-Y series is mainly used for liquid media such as tap water, distilled water, frozen brine, electroplating waste liquid, and also for oils with viscosity less than 4°E.
Second, steam solenoid valve model description
Third, steam
Solenoid valve product features
Corrosion resistance: The main components are valve plugs, the valve body is made of stainless steel and cast steel, and the corrosion resistance is good.
Heat resistance: The electromagnetic and sealing parts are all made of special high temperature resistant electrical materials and sealing materials, and effective heat insulation measures are adopted.
Wear-resistance: Reasonable material selection, clever use of fluid lubrication between the valve plug and the valve body to reduce wear.
Resistance to condensation: The cold north water of the steam pipe is an important factor affecting the action of the steam solenoid valve. The valve is not affected by the condensed water.
Fourth, the structure and principle of steam solenoid valve
The valve is a step-by-step direct pilot type solenoid valve, which can be divided into a normally closed solenoid valve and a normally open solenoid valve according to different opening and closing states when the power is off. Normally closed solenoid valve, after the coil is energized, the armature first lifts the auxiliary valve plug under the action of electromagnetic force, and the fluid on the main valve cup flows away through the auxiliary valve, reducing the pressure acting on the main valve cup, when the main valve When the pressure on the valve cup is reduced to a certain value, the armature drives the main valve cup and uses the pressure difference to open the main valve cup and the medium circulates. After the coil is de-energized, the electromagnetic force disappears and the armature is reset by its own weight. At the same time, depending on the medium pressure, the main and auxiliary valves are tightly closed. Normally open solenoid valve, after the coil is energized, the moving iron core moves down due to the suction force, the auxiliary valve plug is pressed down, the auxiliary valve is closed, the pressure in the main valve valve cup rises, and when the pressure rises to a certain value, the main valve cup The pressure difference between the upper and lower sides is the same. Due to the electromagnetic force, the moving iron core loses under the main valve valve cup, the main valve seat is pressed, and the valve is closed. When the coil is de-energized, the electromagnetic suction force is zero, the auxiliary valve plug and the iron core are lifted up by the spring action, the auxiliary valve is opened, and the fluid on the main valve valve cup flows away through the auxiliary valve, reducing the effect on the main valve valve cup. The pressure, when the pressure on the main valve cup is reduced to a certain value, the main valve cup is pushed up by the pressure difference, the main valve is opened, and the medium is circulated.
V.
| model | ZQDF-1 | ZQDF-2 | ZQDF-3 | ZQDF-1Y | ZQDF-2Y | ZQDF-3Y |
| Nominal pressure MPa | 1.6 | |||||
| Working pressure difference MPa | DN15～50 | 0 to 1.6 | ||||
| DN65～100 | 0.05~1.6 | |||||
| Media type | Gas, air, etc. | Saturated Vapor | Superheated steam or hot gas | Water oil liquid | Hot water, oil | oil |
| Medium temperature °C | ≤60 | ≤180 | ≤220 | ≤60 | ≤180 | ≤220 |
| voltage | Other specifications of AC220V can be used for special order | |||||
| Service life | According to JB/T7352-94 | |||||
| Leakage m1/min | According to JB/T7352-94·F | |||||
| Power consumption | AC≤70VA DC≤60W | |||||
| Explosion-proof mark | dIIBT4 | |||||
| Explosion-proof certificate number | CE991010 | |||||
| Outlet connector | Internal thread M20×1.5 | |||||
| Ambient temperature | -40～+60°C | |||||
| Nominal diameter DN | Dimensions | internal thread | Dimensions | Flange connection | |||||||
| H | L | G | H | L | D | D1 | D2 | b | f | Nd | |
| 15 | 148 | 92 | 1/2 | 176 | 130 | 95 | 65 | 46 | 14 | 2 | 4-Φ14 |
| 20 | 148 | 92 | 3/4 | 181 | 150 | 105 | 75 | 56 | 16 | 2 | 4-Φ14 |
| 25 | 148 | 110 | 1 | 210 | 160 | 115 | 85 | 65 | 16 | 3 | 4-Φ14 |
| 32 | 182 | 120 | 11/4 | 221 | 180 | 140 | 100 | 76 | 18 | 3 | 4-Φ18 |
| 40 | 182 | 140 | 11/2 | 230 | 200 | 150 | 110 | 84 | 18 | 3 | 4-Φ18 |
| 50 | 192 | 162 | 2 | 252 | 230 | 165 | 125 | 99 | 20 | 3 | 4-Φ18 |
| 65 | | | | 265 | 290 | 185 | 145 | 118 | 20 | 3 | 4-Φ18 |
| 80 | | | | 276 | 310 | 200 | 160 | 132 | 20 | 3 | 8-Φ18 |
| 100 | | | | 373 | 350 | 220 | 180 | 156 | twenty two | 3 | 8-Φ18 |
1. When installing, the solenoid valve coil is upward and maintains the vertical position. The arrow or mark on the solenoid valve should be consistent with the flow direction of the pipeline, and should not be installed in places with splashing water or water leakage.
2. The working medium of the solenoid valve should be clean and free of particulate impurities. The dirt and filter on the surface of the solenoid valve internal parts should be cleaned regularly.
3. When the solenoid valve is faulty, in order to isolate the solenoid valve in time and ensure the normal operation of the system, it is better to install a bypass device (Figure 1).
4. In the pipeline system, the diameter of the solenoid valve installed on the branch road should be smaller than the diameter of the main pipeline valve (Figure 2).
5. Before installing the solenoid valve, the pipe must be cleaned. It is recommended to install a filter in front of the valve and a steam pipe to install the trap.
6. The valve cannot be installed in the low recess of the pipeline to prevent the condensation of steam, impurities and the like from being deposited in the valve.
7, the ordinary type can not be used in explosive places.
8. In the case of insufficient rigidity of the pipeline, it is recommended to fix the pipe in front of the valve with a bracket to avoid vibration caused by the solenoid valve working.
9. Before installation, pay attention to see the product label, read the instruction manual carefully, and judge whether the product meets the conditions of use.
10. A pressure gauge should be installed on the pipe before and after the solenoid valve to observe the pipe pressure.
Eight, steam solenoid valve maintenance
1. It is recommended to use a unit to assign someone to take care of the maintenance.
2. After the solenoid valve is installed, it is necessary to pass the medium experiment action several times. After confirming the normal condition, it can be put into formal use.
3. The dirt inside and outside the large valve and the suction surface should be cleaned regularly, taking care not to damage the sealing surface.
4. When the solenoid valve is not used for a long time, the manual valve before the valve should be closed. When re-enabling, the steam solenoid valve should remove the condensed water and make several trials. After the switch is normal, it can be put into use.
5. When the solenoid valve is removed from the pipeline, the internal parts should be wiped clean and stored with compressed air.
6. When the use time is long, if the seal between the piston and the valve seat is not good, the piston sealing surface can be re-polished and then grinded with the valve seat.
7. When working, pay attention to the pressure gauge before and after the valve, the working pressure should not exceed the rated pressure, and the working pressure difference must be within the rated pressure difference. When the working pressure exceeds the rated pressure or the working pressure difference exceeds the rated pressure difference, the solenoid valve should be stopped, and the front and rear manual valves should be closed to prevent the solenoid valve from exploding and leaking.
IX. Steam solenoid valve ordering instructions
1. Please specify the model number, nominal diameter, nominal pressure, working medium, working pressure difference, medium temperature, power supply voltage and frequency, and medium viscosity when ordering.
| 2. The voltage of the solenoid valve during normal operation is 220. | +22 | V, if it exceeds this range, please indicate the voltage fluctuation when ordering. Other specifications of the power supply voltage can be made for special order. |
| -15 |
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