CN2056721U - Low pressure safety overflow valve for liquid filling tank - Google Patents
Low pressure safety overflow valve for liquid filling tank Download PDFInfo
- Publication number
- CN2056721U CN2056721U CN 89215729 CN89215729U CN2056721U CN 2056721 U CN2056721 U CN 2056721U CN 89215729 CN89215729 CN 89215729 CN 89215729 U CN89215729 U CN 89215729U CN 2056721 U CN2056721 U CN 2056721U
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- pressure
- valve
- utility
- model
- liquid filling
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Abstract
The utility model belongs to a low pressure safety overflow valve for a liquid filling tank. The valve comprises an inserted type pressure valve, a throttling pressure regulating valve plate and a leading electromagnetic valve. The utility model is characterized in that the cycle control for testing the pressure and the water level of the liquid filling tank can ensure the safety use of the liquid filling tank. When the cycle control has a failure, the utility model also has the control function of secondary overpressure overflow protection. When the utility model is used, the utility model has the advantages of convenience, reliability, multifunction, etc.
Description
The utility model belongs to a kind of low-voltage safety relief valve of multiple protection functions, adapts to a kind of pressure controlled valve of the safety protection of hydraulic press pressure-loaded prefilling tank.
The low-voltage safety relief valve that uses on the hydraulic press pressure-loaded prefilling tank in the past, generally all adopt complete opening type safety overflow valve or lever weighting structural safety valve, domestic afterwards formulated hydraulic press component JB ministerial standard again after, nearly all adopt a kind of uneven big spring direct dynamic structure safety valve.This valve is prone to wild effect, and when the pressure-loaded prefilling tank superpressure, valve is not opened sometimes, and when causing the press backhaul, high pressure water can not unimpeded overflow and the phenomenon of blasting, and the accident that causes casualties.Take place for fear of accident, existing unique method is exactly that the reinforcement scheduled maintenance inspection brings very burden to operator like this.
In order to solve this significant problem, the utility model has improved existing safety overflow valve, and this valve is used on the pressure-loaded prefilling tank safe and punctually, avoids operator's trouble.
The utility model is to realize like this, the low-voltage safety relief valve that a kind of pressure-loaded prefilling tank is used, comprise a plug-in type pressure valve, it is characterized in that, also comprise a pilot solenoid valve and a throttling pressure regulation valve plate, on the spool of plug-in type pressure valve, be provided with the plunger of a priming hole, the two ends of this priming hole communicate with Vc control chamber and Vp pressure chamber respectively, and the Vc control chamber communicates with pilot solenoid valve and throttling pressure regulator valve respectively.The valve of this structure not only can be realized the superpressure overflow protection control of pressure-loaded prefilling tank, and, can also on pressure-loaded prefilling tank, load onto pressure gauge or level switch, make it carry out Pressure testing loop control or water level detecting loop control.
Describe below in conjunction with embodiment:
Fig. 1, the utility model are applied to the schematic diagram on the pressure-loaded prefilling tank.
Fig. 2, the utility model structural drawing.
See Fig. 1, load onto a pressure gauge with electric contact (8) on pressure-loaded prefilling tank (7), getting and setting up the use normal pressure is 7～8Kgf/cm
2Add 0.5Kgf/cm
2As testing signal.See Fig. 2, when pressure-loaded prefilling tank (7) pressure of return water surpassed the set pressure signal, the pilot solenoid valve of issuing an order (1) energising made control chamber Vc row low pressure, and plug-in mounting pressure valve core (4) is opened, and connects Vp and VT discharge opeing; And in the discharge opeing process, pressure-loaded prefilling tank (7) internal pressure descends, and when being lower than the set pressure signal, issuing an order disconnects the electricity of pilot solenoid valve (1), makes it recover normally closed position.Control chamber Vc can build pressure by priming hole (d) feed liquor, and controls plug-in mounting pressure valve core (4) and close, thereby realizes the pressure measurement loop control.
Equally, this valve also can carry out the water level detecting loop control.Adorn a level switch on pressure-loaded prefilling tank, get the proper functioning water level signal, pilot solenoid valve (1) is carried out the switching electric control get final product, working procedure is with the Pressure testing loop control.
Loop control by to the pressure or the water level of pressure-loaded prefilling tank can not only guarantee the normal use of pressure-loaded prefilling tank, and avoid occurring pressure-loaded prefilling tank superpressure or super water level phenomenon.
If work as the normal loop control of using (above-mentioned two controls) in case malfunctioning; interior water level of pressure-loaded prefilling tank (7) and pressure all will increase; surpass original normal water level and set pressure; at this moment; pilot solenoid valve (1) under set pressure by pressure regulator valve (10) overflow on the throttling pressure regulation valve plate (2); realize Vc and Vp under new state of equilibrium, will insert formula pressure valve core (4) and open the Vt that certain altitude is connected Vp, realize protective function for the second time.
If when loop control is out of control when control chamber Vc can not being built press, flow back to water tank for preventing that a jar interior water, gas are exposed to light accidentally, to get the minimum threshold pression of Vp pressure chamber be 2.5Kgf/cm to the pressure that gives of the spring of plug-in mounting pressure valve (3)
2As the pressure limiting condition of spring (3), even therefore out of control at pilot valve, or the Vc that causes can not build under the uneven situation of pressure under the condition that blocked of priming hole (d), and this valve also can be reduced to 2.5Kgf/cm at cavity pressure down
2The time, carry out positive closing.
Under the big situation of volume of control chamber Vc, it is also longer to build the pressure time under the low pressure, in order to improve the quick closedown performance of valve, the utility model can reduce the cavity volume of Vc by the plunger (6) that has priming hole (d), can pass through between control chamber Vc and pilot solenoid valve again simultaneously, throttle valve (5) on the throttling pressure regulation valve plate (2) is realized the adjusting of switching speed and circulation Lift.
Characteristics of the present utility model are, can carry out to pressure-loaded prefilling tank the loop control of pressure detecting and water level detecting, guarantee the pressure-loaded prefilling tank safe handling. When loop control is malfunctioning, also has the control of return shock overflow protection. Also have at pilot solenoid valve simultaneously malfunctioningly, control chamber can not built in the uneven situation of pressure, is the pressure limiting positive closing protective effect that prevents that water in the tank, gas are exposed to light accidentally.
The advantages such as the utility model has convenient and reliable in use, and function is many.
Claims (2)
1, the low-voltage safety relief valve used of a kind of pressure-loaded prefilling tank, comprise a plug-in type pressure valve, it is characterized in that, also comprise a pilot solenoid valve (1), with a throttling pressure regulation valve plate (2), on the spool (4) of plug-in type pressure valve (9), be provided with the plunger (6) of a priming hole (d), the two ends of this priming hole (d) communicate with Vc control chamber and Vp pressure chamber respectively, and the Vc control chamber communicates with throttle valve (5) and pressure regulator valve (10) on pilot solenoid valve (1) and the throttling pressure regulation valve plate (2) respectively.
2, by the described low-voltage safety relief valve of claim 1, it is characterized in that: between Vc control chamber and pilot solenoid valve (1), be provided with a throttle grverning valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89215729 CN2056721U (en) | 1989-09-01 | 1989-09-01 | Low pressure safety overflow valve for liquid filling tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89215729 CN2056721U (en) | 1989-09-01 | 1989-09-01 | Low pressure safety overflow valve for liquid filling tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2056721U true CN2056721U (en) | 1990-05-02 |
Family
ID=4871265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89215729 Pending CN2056721U (en) | 1989-09-01 | 1989-09-01 | Low pressure safety overflow valve for liquid filling tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2056721U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526202A (en) * | 2015-12-04 | 2016-04-27 | 安徽理工大学 | Overflow valve with pressure regulating and safety functions |
| CN105605263A (en) * | 2015-11-04 | 2016-05-25 | 中国人民解放军后勤工程学院 | Pilot control branch pipeline flow stabilization regulation apparatus |
| CN110778760A (en) * | 2019-11-15 | 2020-02-11 | 东莞海特帕沃液压科技有限公司 | Safety valve |
-
1989
- 1989-09-01 CN CN 89215729 patent/CN2056721U/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605263A (en) * | 2015-11-04 | 2016-05-25 | 中国人民解放军后勤工程学院 | Pilot control branch pipeline flow stabilization regulation apparatus |
| CN105526202A (en) * | 2015-12-04 | 2016-04-27 | 安徽理工大学 | Overflow valve with pressure regulating and safety functions |
| CN110778760A (en) * | 2019-11-15 | 2020-02-11 | 东莞海特帕沃液压科技有限公司 | Safety valve |
| CN110778760B (en) * | 2019-11-15 | 2021-06-01 | 浙江卡达阀门有限公司 | Safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |