CN216519878U - Ultrafiltration pneumatic valve control system - Google Patents
Ultrafiltration pneumatic valve control system Download PDFInfo
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- CN216519878U CN216519878U CN202122508041.XU CN202122508041U CN216519878U CN 216519878 U CN216519878 U CN 216519878U CN 202122508041 U CN202122508041 U CN 202122508041U CN 216519878 U CN216519878 U CN 216519878U
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Abstract
The utility model provides an ultrafiltration pneumatic valve control system which comprises an air source air inlet pipe, a solenoid valve and a pneumatic valve, wherein the pneumatic valve comprises an air cylinder and a switch valve, the air source air inlet pipe is connected with an air inlet hole of the solenoid valve, the solenoid valve is provided with two air outlet holes, two air source outlets are respectively connected with an opening signal air source pipe and a closing signal air source pipe, the opening signal air source pipe and the closing signal air source pipe are connected with the air cylinder, and a throttle valve is arranged on the closing signal air source pipe. According to the utility model, the throttle valve is arranged on the closing signal air source pipe between the air cylinder and the electromagnetic valve, so that the requirements of slow closing of the switch valve can be met by adjusting the throttle valve, impact force caused by fast closing of the switch valve is protected, a film element is protected, the switch valve does not need to be replaced, and the cost is saved.
Description
Technical Field
The utility model belongs to the field of ultrafiltration, and particularly relates to an ultrafiltration pneumatic valve control system.
Background
Ultrafiltration is a membrane separation technique, the membrane of which is a porous asymmetric structure. The ultrafiltration process is a solution separation process based on the mechanical screening principle by taking the pressure difference between two sides of a membrane as a driving force, the use pressure is usually 0.01-0.3 MPa, the screening aperture is 0.002-0.1 mu m, and the cut-off molecular weight is about 1000-100000 daltons.
The ultrafiltration device is used as pretreatment equipment of the reverse osmosis device and plays an important role in a water treatment system. The stability of the operation of the ultrafiltration device determines the stability of the subsequent reverse osmosis operation, the chemical cleaning period of the reverse osmosis device and the service life of the reverse osmosis membrane.
The ultrafiltration membrane element itself has the following characteristics: the filter pore size is small, and the quality of produced water is high; the polyvinylidene fluoride membrane wire material is oxidation-resistant and pollution-resistant, and the service life is long; air scrubbing, good flux recovery. The design and the operation condition of the ultrafiltration device greatly influence the quality of the subsequent reverse osmosis inlet water, and further influence the quality of the produced water of the whole system.
The ultrafiltration needs to be through the preface of just dashing before the system water preface of filtration, when just dashing the preface and ending, need close the ultrafiltration pneumatic valve, because the pneumatic switch butterfly valve that adopts during the ultrafiltration pneumatic valve can close immediately after the shut-off signal reachs, a large amount of sparge water is cut suddenly, and the impact force that arouses can cause rocking of membrane module, can arouse the broken silk of membrane element.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides an ultrafiltration pneumatic valve control system, which can slowly close a pneumatic valve and avoid the damage of a membrane component caused by impact force caused by sudden cutting of washing water.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an ultrafiltration pneumatic valve control system, includes air supply intake pipe, solenoid valve and pneumatic valve, the pneumatic valve includes cylinder and ooff valve, the inlet port of air supply intake pipe connection solenoid valve, the solenoid valve is equipped with two ventholes, two air supply exports are connected with respectively and open signal air supply pipe and close signal air supply pipe, open signal air supply pipe and close signal air supply union coupling the cylinder, wherein, be provided with the choke valve on the signal air supply pipe of closing.
Furthermore, a throttle valve is arranged on the opening signal air source pipe.
Furthermore, a filtering pressure reducing valve is arranged on the air source air inlet pipe.
Further, an air source air inlet pipe at the inlet end of the filtering and reducing valve is a stainless steel pipe, and an air source air inlet pipe from the outlet end of the filtering and reducing valve to an air inlet of the electromagnetic valve is a hose.
Furthermore, a stop valve is arranged on the air source air inlet pipe.
Further, the solenoid valve is a two-position five-way solenoid valve.
Compared with the prior art, the utility model has the beneficial effects that: the throttle valve is arranged on the closing signal air source pipe between the air cylinder and the electromagnetic valve, so that the requirement that the switch valve is closed slowly can be met by adjusting the throttle valve, the impact force caused by the quick closing of the switch valve is protected, the membrane element is protected, the switch valve does not need to be replaced, and the cost is saved.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic structural diagram of example 2 of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1. the air source comprises an air source air inlet pipe, 2, an electromagnetic valve, 3, an air cylinder, 4, a switch valve, 5, an opening signal air source pipe, 6, a closing signal air source pipe, 7, a throttle valve, 8, a filtering pressure reducing valve, 9 and a stop valve.
Detailed Description
The present invention is further described in detail below with reference to specific examples so that those skilled in the art can more clearly understand the present invention.
Example 1
As shown in fig. 1, an ultrafiltration pneumatic valve control system comprises an air source air inlet pipe 1, an electromagnetic valve 2 and a pneumatic valve, wherein the pneumatic valve comprises an air cylinder 3 and a switch valve 4, the air source air inlet pipe 1 is connected with an air inlet of the electromagnetic valve 2, the electromagnetic valve 2 is provided with two air outlet holes, two air source outlets are respectively connected with an opening signal air source pipe 5 and a closing signal air source pipe 6, the opening signal air source pipe 5 and the closing signal air source pipe 6 are connected with the air cylinder 3, and a throttle valve 7 is arranged on the closing signal air source pipe 6.
The electromagnetic valve 2 is controlled by DCS or PLC, instrument air enters the electromagnetic valve 2 through the air source air inlet pipe 1, the air source air inlet pipe 1 and the opening signal air source pipe 5 are communicated through the DCS or PLC control electromagnetic valve 2, the instrument air is sent into the air cylinder 3 through the opening signal air source pipe 5, and the air cylinder drives the switch valve 4 to be opened; when closing the ooff valve 4, adjust the aperture of choke valve 7, through DCS or PLC control solenoid valve 2 intercommunication air supply intake pipe 1 with close signal air supply pipe 6, the instrument air is sent into in the cylinder 3 through closing signal air supply pipe 6, because the deceleration action of choke valve 7, the cylinder 3 admits air and slows down, therefore ooff valve 4 closes the speed and slows down to avoid the fast impact force that causes of closing of ooff valve 4. And a filtering pressure reducing valve 8 is arranged on the air source inlet pipe 1 to maintain the air pressure of the air source communicated with the electromagnetic valve 2.
The air source air inlet pipe 1 at the inlet end of the filtering and reducing valve 8 is a stainless steel pipe, and the air source air inlet pipe 1 from the outlet end of the filtering and reducing valve 8 to the air inlet of the electromagnetic valve 2 is a hose.
And a stop valve 9 is arranged on the air source air inlet pipe 1.
The electromagnetic valve 2 is a two-position five-way electromagnetic valve.
Example 2
As shown in fig. 2, in embodiment 2, a throttle valve 7 is also provided only on the opening signal gas source pipe 5 at a place different from that of embodiment 1, so that when the open/close valve 4 is opened, the opening degree of the throttle valve 7 on the opening signal gas source pipe 5 is first adjusted, the gas source intake pipe 1 and the opening signal gas source pipe 5 are communicated through the DCS or PLC control solenoid valve 2, and the instrument air is sent into the cylinder 3 through the opening signal gas source pipe 5, and the intake air of the cylinder 3 is slowed down due to the deceleration action of the throttle valve 7 on the opening signal gas source pipe 5, so that the opening speed of the open/close valve 4 is slowed down, thereby avoiding the impact force caused by the quick opening of the open/close valve 4.
The working principle is as follows: when a positive flushing step sequence is carried out, the stop valve 9 is opened, instrument air enters the electromagnetic valve 2 through the air source air inlet pipe 1, the opening degree of the throttle valve 7 on the opening signal air source pipe 5 is firstly adjusted, the DCS or the PLC controls the communication of the air source air inlet pipe 1 and the opening signal air source pipe 5 of the electromagnetic valve 2, the instrument air is sent into the cylinder 3 through the opening signal air source pipe 5, the air inlet of the cylinder 3 is slowed down due to the deceleration effect of the throttle valve 7 on the opening signal air source pipe 5, the opening speed of the switch valve 4 is slowed down, and therefore the impact force caused by the quick opening of the switch valve 4 is avoided; when closing the ooff valve 4, the aperture of adjusting throttle valve 7 passes through DCS or PLC control solenoid valve 2 intercommunication air supply intake pipe 1 and closes signal air source pipe 6, and the instrument air is sent into in the cylinder 3 through closing signal air source pipe 6, because the deceleration action of throttle valve 7, the cylinder 3 is admitted air and is slowed down, therefore the ooff valve 4 closes the speed and slows down to avoid the fast impact force that closes the cause of ooff valve 4.
The mechanisms, components and parts of the present invention which are not described in detail are all the existing structures which exist in the prior art. Can be purchased directly from the market.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an ultrafiltration pneumatic valve control system, includes air supply intake pipe (1), solenoid valve (2) and pneumatic valve, the pneumatic valve includes cylinder (3) and ooff valve (4), its characterized in that, the inlet port of solenoid valve (2) is connected in air supply intake pipe (1), solenoid valve (2) are equipped with two ventholes, two air supply outlets are connected with respectively and open signal air supply pipe (5) and close signal air supply pipe (6), open signal air supply pipe (5) and close signal air supply pipe (6) and connect cylinder (3), wherein, be provided with choke valve (7) on the signal air supply pipe (6) of closing.
2. An ultra-filtration pneumatic valve control system according to claim 1, wherein a throttle valve (7) is provided on the opening signal source line (5).
3. An ultrafiltration pneumatic valve control system according to claim 1, wherein the air supply inlet line (1) is provided with a filtration relief valve (8).
4. An ultrafiltration pneumatic valve control system according to claim 3, wherein the air source inlet pipe (1) at the inlet end of the filter pressure reducing valve (8) is a stainless steel pipe, and the air source inlet pipe (1) from the outlet end of the filter pressure reducing valve (8) to the air inlet of the solenoid valve (2) is a hose.
5. An ultrafiltration pneumatic valve control system according to claim 1, wherein a stop valve (9) is provided in the air supply inlet line (1).
6. An ultrafiltration pneumatic valve control system according to claim 1, wherein said solenoid valve (2) is a two-position, five-way solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122508041.XU CN216519878U (en) | 2021-10-18 | 2021-10-18 | Ultrafiltration pneumatic valve control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122508041.XU CN216519878U (en) | 2021-10-18 | 2021-10-18 | Ultrafiltration pneumatic valve control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216519878U true CN216519878U (en) | 2022-05-13 |
Family
ID=81522703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122508041.XU Active CN216519878U (en) | 2021-10-18 | 2021-10-18 | Ultrafiltration pneumatic valve control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216519878U (en) |
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2021
- 2021-10-18 CN CN202122508041.XU patent/CN216519878U/en active Active
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