CN201780511U - Vacuum pressure controller - Google Patents
Vacuum pressure controller Download PDFInfo
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- CN201780511U CN201780511U CN 201020173910 CN201020173910U CN201780511U CN 201780511 U CN201780511 U CN 201780511U CN 201020173910 CN201020173910 CN 201020173910 CN 201020173910 U CN201020173910 U CN 201020173910U CN 201780511 U CN201780511 U CN 201780511U
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- vacuum
- control unit
- solenoid valve
- pressure
- vacuum degree
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Abstract
The utility model discloses a vacuum pressure controller which is used for controlling the vacuum degree or pressure of an instrument system (1), the controller comprises two vacuum degree controlling units or pressure controlling units (3 and 4) which are sealed in the sealing box (2), an air exhaust magnetic valve (5) which is connected with the first vacuum degree controlling unit or pressure controlling unit (3), an air inflow magnetic valve (6) which is connected with the second vacuum degree controlling unit or pressure controlling unit (4), and a power supply (12) which supplies power for the vacuum pressure controller, wherein the air exhaust magnetic valve (5) is also connected with an exhaust pipeline (7), the air inflow solenoid valve (6) is also connected with an air inflow pipeline (8), and the vacuum pressure controller is connected with the instrument system (1) through communicating pipelines (91, 92, 93 and 94). The utility model has simple structure and low cost, is convenient for manufacture and maintenance, and has an anti-explosion function.
Description
Technical field
The utility model relates to the vacuum degree control field, relates in particular to a kind of vacuum pressure controller.
Background technology
We usually want the vacuum tightness of the hierarchy of control in research work, and it is constant to make it keep certain vacuum in the operational process of system.For example, the reagent purification processes is utilized Rotary Evaporators often, the control of vacuum tightness has critical influence to the reagent purity that is steamed in still-process, but distillation in the market is a pressure transducer with the utilization of vacuum pressure controller mensuration vacuum tightness, it costs an arm and a leg, imported product 1.8 ten thousand～30,000, home products 0.3 ten thousand～10,000, and explosion-proof performance is relatively poor.
At present do not adopt the electric contact vacuum meter to come the device of measurement of vacuum yet, main cause is the precision instability of electric contact vacuum meter measurement of vacuum, such as, when the electric contact energising of electric contact vacuum meter disconnects again, have certain resistance, so just produce certain delay cut-off, delay time is unfixing yet, the short then measuring accuracy height of time-delay, time-delay is long, and then measuring accuracy is low.Therefore, when often appearing at vacuum tightness arrival setting value in the use, because the delay cut-off of electric contact vacuum meter, the solenoid valve of bleeding of control can't cut out and continue to bleed, Shi Ji vacuum tightness will surpass setting value like this, so, general without the element of electric contact vacuum meter as the measurement of vacuum in the vacuum pressure controller.
The utility model content
In order to address the above problem, the utility model fundamental purpose provide a kind of simple in structure, be convenient to make, easy to maintenance, with low cost and have a vacuum pressure controller of explosion prevention function.
To achieve these goals, the utility model provides a kind of vacuum degree control device, is used for the vacuum tightness or the pressure of control instrument system (1), comprising: be sealed in two vacuum degree control unit or pressure control unit (3,4) in the seal box (2); With the solenoid valve of bleeding (5) that described first vacuum degree control unit or pressure control unit (3) link to each other, the described solenoid valve of bleeding (5) also is connected with exhaust pipe (7); With the air inlet solenoid valve (6) that described second vacuum degree control unit or pressure control unit (4) link to each other, described air inlet solenoid valve (6) also is connected with air inlet pipeline (8); Power supply (12) for described vacuum pressure controller power supply; The described solenoid valve of bleeding (5) of wherein said vacuum pressure controller, first vacuum degree control unit or pressure control unit (3), second vacuum degree control unit or pressure control unit (4) and air inlet solenoid valve (6) are connected with described instrument system (1) by connecting pipeline (91,92,93,94) respectively.
Described vacuum degree control unit in the utility model can be the electric contact vacuum meter, also can be electro connecting pressure gauge.
According to an embodiment of the present utility model, described two vacuum degree control unit or pressure control unit (3,4) link to each other with described air inlet solenoid valve (6) with the described solenoid valve of bleeding (5) by cable respectively; Described vacuum pressure controller also comprises and is installed in last two the vacuum cable splices of seal box (2) (10,11); Wherein the cable of described first vacuum degree control unit in the seal box (2) or pressure control unit (3) links to each other by the cable of the outer described solenoid valve of bleeding (5) of described first vacuum cable splice (10) and seal box (2); Wherein the cable of described second vacuum degree control unit in the seal box (2) or pressure control unit (4) links to each other by the cable of the outer described air inlet solenoid valve (6) of described first vacuum cable splice (11) and seal box (2).
According to an embodiment of the present utility model, described vacuum pressure controller also comprises two the line seal interfaces (13,14) that are installed on the seal box (2); Wherein said first vacuum degree control unit or pressure control unit (3) link to each other with described connecting pipeline (92) by first line seal interface (13); Wherein second vacuum degree control unit or pressure control unit (4) link to each other with described connecting pipeline (93) by second line seal interface (14).
The utility model utilizes fault-tolerant principle to improve control accuracy, and its precision can reach the level of imported product or home products, and since the principle of work difference, used element difference, and price is lower more than 50 times than imported product, also hangs down more than 10 times than homemade.And simple in structure, be convenient to make.
Moreover, the utility model adopts seal box that the vacuum degree control unit is sealed, thereby also has explosion-proof advantage.The utility model can be widely used in the vacuum control in fields such as chemical industry, pharmacy.
Description of drawings
Fig. 1 is the structural representation of an embodiment of vacuum pressure controller of the present utility model.
Embodiment
To describe specific embodiment of the utility model in detail below.Should be noted that the embodiments described herein only is used to illustrate, be not limited to the utility model.
The utility model utilizes fault-tolerant technique, adopt two cover electric contact vacuum meter control electromagnetic valve switches of sealing, realized control vacuum tightness and explosion-proof purpose, and control accuracy improves greatly, and it is highly stable, has reached the level of imported product or home products fully.
Vacuum pressure controller of the present utility model is applied on the instrument system 1 that needs control vacuum tightness, and concrete structure comprises two the vacuum degree control unit or pressure control unit 3 and 4 that all place a seal box 2 as shown in Figure 1; Described first vacuum degree control unit 3 is in series with the solenoid valve 5 of bleeding, and described second vacuum degree control unit 4 is connected with air inlet solenoid valve 6; The described solenoid valve 5 of bleeding links to each other with exhaust pipe 7, and described air inlet solenoid valve 6 links to each other with air inlet pipeline 8; Described vacuum pressure controller is connected with the instrument system 1 that needs control by connecting pipeline 91,92,93 and 94, so that control the vacuum tightness in the described instrument system 1.
Two vacuum degree control unit 3 described here and 4 can be the electric contact vacuum meter; Described two pressure control units 3 and 4 can be electro connecting pressure gauge; Based on other identical parts and structure, also can be made into explosion-proof fault-tolerant pressure controller product.
The following examples are example with the electric contact vacuum meter as the vacuum degree control unit, describe each parts in the utility model vacuum pressure controller in detail.
1), seal box 2, two electric contact vacuum meters 3 and 4 are encapsulated in the sealing box 2, cut off air flow with the external world, the aerosol that prevents organic reagent is diffused into and causes in the electric contact vacuum meter and fire.
2), first electric contact vacuum meter 3, it is connected in series with the solenoid valve 5 of bleeding, when the vacuum tightness of instrument system 1 during less than setting value, this electric contact vacuum meter 3 is on-states, the solenoid valve 5 of bleeding is opened, the vacuum tightness of instrument system 1 rises; When the vacuum tightness of instrument system was equal to or greater than setting value, this electric contact vacuum meter 3 was off-states, and the solenoid valve 5 of bleeding cuts out, and the vacuum tightness of instrument system 1 no longer rises.
3), second electric contact vacuum meter 4, it and air inlet solenoid valve 6 are connected in series, when the vacuum tightness of instrument system was less than or equal to setting value, this electric contact vacuum meter 4 was off-states, air inlet solenoid valve 6 cuts out, and does not influence the vacuum tightness of instrument system 1; When the vacuum tightness of instrument system 1 during greater than setting value, this electric contact vacuum meter 4 is on-states, and air inlet solenoid valve 6 is opened, and the vacuum tightness of instrument system 1 descends.
4), the solenoid valve 5 of bleeding, power by power supply 12, its operating voltage is an alternating current 220V, this solenoid valve 5 is closed conditions during outage, this solenoid valve 5 is open modes during energising, is used for instrument system 1 bled its vacuum tightness is risen.
5), air inlet solenoid valve 6, power by power supply 12, its operating voltage also is an alternating current 220V, this solenoid valve 6 is closed conditions during outage, this solenoid valve is an open mode during energising, makes the instrument system air inlet that vacuum tightness is descended.
6), exhaust pipe 7, be connected with the solenoid valve 5 of bleeding, for connecing the vacuum pump pipeline of duty.
7), air inlet pipeline 8, be connected with air inlet solenoid valve 6, be the pipeline of direct blowing air or inert gas.
8), connecting pipeline 91,92,93,94, for being connected to the pipeline in the instrument system 1:
Wherein, connecting pipeline 91 connects bleed solenoid valve 5 and instrument system 1, and connecting pipeline 94 connects air inlet solenoid valve 6 and instrument system 1;
Wherein connecting pipeline 92 connects first electric contact vacuum meter 3 and instrument system 1, and preferably, first electric contact vacuum meter 3 links to each other with connecting pipeline 92 by line seal interface 13, wherein line seal interface 13 is installed on the seal box 2, the measurement vacuum line of electric contact vacuum meter 3 is continuous with the pipeline that is connected instrument system 1 92 outside the seal box 2 by this line seal interface 13 in the seal box 2, and is air tight when making the inside and outside pipeline of seal box by seal box 2;
Wherein connecting pipeline 93 connects second electric contact vacuum meter 4 and instrument system 1, preferably, second electric contact vacuum meter 4 links to each other with connecting pipeline 93 by line seal interface 14, wherein line seal interface 14 is installed on the seal box 2, the measurement vacuum line of electric contact vacuum meter 4 is continuous with the pipeline that is connected instrument system 1 93 outside the seal box 2 by this line seal interface 14 in the seal box 2, and is air tight when making the inside and outside pipeline of seal box by seal box 2.
9) power supply 12, can connect the alternating current of 220V, are electric contact vacuum meter and solenoid valve.
Preferably, in the utility model vacuum pressure controller, in order to increase sealing, can use the vacuum cable splice 10 and 11 that is installed on the seal box, electric contact vacuum meter 3 in the seal box 2 and 4 cable are linked to each other with 6 cable with the outer solenoid valve 5 of seal box 2 with 11 by this vacuum cable splice 10 respectively, air tight when making cable pass through seal box 2.
According to above-mentioned be in the description of example with the electric contact vacuum meter, the utility model utilizes fault-tolerant principle that two electric contact vacuum meters are installed as can be seen, control accuracy improves greatly and is highly stable, has reached the requirement of vacuum pressure controller fully.Two one of them controls of electric contact vacuum meter electromagnetic valve switch of bleeding, when vacuum tightness during less than setting value, the electric contact in this table is a "on" position, and the solenoid valve of bleeding is opened, and vacuum tightness rises; When vacuum tightness was equal to or greater than setting value, the electric contact in this table should be an off-position, the closed electromagnetic valve of bleeding, and vacuum tightness no longer rises.Another electric contact vacuum meter control air inlet electromagnetic valve switch, when vacuum tightness less than when equaling setting value, the electric contact in this table is an off-position, the air inlet closed electromagnetic valve does not influence vacuum tightness; When vacuum tightness during greater than setting value, the electric contact in this table is a "on" position, and the air inlet solenoid valve is opened, and vacuum tightness descends.The electric contact vacuum meter generation delay cut-off of solenoid valve if control is bled, vacuum tightness will be greater than setting value, at this moment control the electric contact vacuum meter energising of air inlet solenoid valve, and the air inlet solenoid valve is opened, and the vacuum tightness of instrument system can be got back to setting value again.If the electric contact vacuum meter generation delay cut-off of control air inlet solenoid valve, vacuum tightness will be less than setting value, at this moment the electric contact vacuum meter of controlling the solenoid valve of bleeding can work again, make the vacuum tightness of instrument system also can get back to setting value, therefore, the vacuum tightness of instrument system can reach a kind of mobile equilibrium in the very little up and down scope of setting value, control accuracy improves greatly and be highly stable.
The utility model also has explosion prevention function.Because the utility model normally is applied in the vacuum control of organic reagent distillation, might there be the aerosol of organic reagent in working environment, during electric contact power on/off in the vacuum meter, can produce electric spark, if the aerosol concentration of the interior organic reagent of electric contact vacuum meter reaches certain value and can cause detonation, therefore, the electric contact vacuum meter must be isolated from the outside, gas exchange can not be arranged, so, two electric contact vacuum meters are installed in the seal box 2, and cable and pipeline also pass through seal box with sealing state, and the electric contact vacuum meter can not cause the detonation of organic reagent aerosol when work like this.
Function recited above, also suitable fully in the explosion-proof fault-tolerant pressure controller product that adopts electro connecting pressure gauge.
The utility model can be used in the Rotary Evaporators, utilizes 20L Rotary Evaporators toluene distillation reagent again, and the process of its use is as follows:
1, at first the explosion-proof fault-tolerant vacuum pressure controller of the utility model is received on the 20L Rotary Evaporators, method is as follows:
1. exhaust pipe 7 is received on the vacuum pump pipeline of duty;
2. four connecting pipelines 91,92,93 and 94 are connected on the pipeline of instrument system 1;
3. air inlet pipeline 8 blowing airs;
4. the vacuum measurement value of setting electric contact vacuum meter 3 and 4 is 0.095MPa;
5. energized 12.
2, set the parameter of Rotary Evaporators, condenser temperature is 5 ℃, and the water-bath temperature is 52 ℃, and the evaporative flask rotational speed is 22rpm.
3, add not pure toluene reagent 15L, distillation is prepared in the beginning preheating.
When 4, the temperature of steam (vapor) outlet reached 45 ℃, toluene reagent began to steam, and condensed into liquid at the condenser place and flow in the receiving flask.
5, the various interface place of Rotary Evaporators all can leak gas, work certain hour vacuum tightness will descend, when vacuum tightness during less than 0.095MPa, electric contact vacuum meter 3 in the explosion-proof fault-tolerant vacuum pressure controller of the utility model is connected circuit, the solenoid valve 5 of bleeding is opened, make vacuum tightness be raised to 0.095MPa again, the solenoid valve 5 of at this moment bleeding should cut out.
If 6 electric contact vacuum meters 3 are when vacuum tightness reaches 0.095MPa, delay cut-off takes place, also there is not disconnecting circuit, the solenoid valve 5 of bleeding can not close to close and continue to bleed, vacuum tightness can surpass 0.095MPa, and at this moment another electric contact vacuum meter 4 in the explosion-proof fault-tolerant vacuum pressure controller of the utility model will be connected circuit, and air inlet solenoid valve 6 is opened, make vacuum tightness drop to 0.095MPa again, at this moment air inlet solenoid valve 5 should cut out.
If 7 electric contact vacuum meters 4 are when vacuum tightness drops to 0.095MPa, delay cut-off takes place, also there is not disconnecting circuit, air inlet solenoid valve 6 can not close the continuation air inlet of closing, and vacuum tightness can be lower than 0.095MPa, at this moment can carry out above-mentioned step 5 again.
The explosion-proof fault-tolerant vacuum pressure controller of the utility model can fine control vacuum tightness in 0.095MPa ± 0.0002MPa scope, up to the distillation work again of finishing toluene reagent.
Control accuracy of the present utility model has reached the level of imported product or home products, since the principle of work difference, used element difference, and price is lower more than 50 times than imported product, also hangs down more than 10 times than homemade.And can with vacuum degree control in 0～105.OkPa scope,, and have explosion prevention function, utilize fault-tolerant principle to improve control accuracy according to setting value control vacuum tightness.This product can be widely used in the vacuum control in fields such as chemical industry, pharmacy.
Though described the utility model with reference to several exemplary embodiments, should be appreciated that used term is explanation and exemplary and nonrestrictive term.The spirit or the essence that do not break away from utility model because the utility model can specifically be implemented in a variety of forms, so be to be understood that, the foregoing description is not limited to any aforesaid details, and should be in the spirit and scope that claim limited of enclosing explain widely, therefore fall into whole variations in claim or its equivalent scope and remodeling and all should be the claim of enclosing and contain.
Claims (5)
1. vacuum pressure controller is used for the vacuum tightness or the pressure of control instrument system (1), it is characterized in that, comprising:
Be sealed in two vacuum degree control unit or pressure control unit (3,4) in the seal box (2);
With the solenoid valve of bleeding (5) that described first vacuum degree control unit or pressure control unit (3) link to each other, the described solenoid valve of bleeding (5) also is connected with exhaust pipe (7);
With the air inlet solenoid valve (6) that described second vacuum degree control unit or pressure control unit (4) link to each other, described air inlet solenoid valve (6) also is connected with air inlet pipeline (8);
Power supply (12) for described vacuum controller power supply;
The described solenoid valve of bleeding (5) of wherein said vacuum controller, first vacuum degree control unit or pressure control unit (3), second vacuum degree control unit or pressure control unit (4) and air inlet solenoid valve (6) are connected with described instrument system (1) by connecting pipeline (91,92,93,94) respectively.
2. vacuum pressure controller according to claim 1 is characterized in that, described vacuum degree control unit is the electric contact vacuum meter.
3. vacuum pressure controller according to claim 1 is characterized in that, described pressure control unit is an electro connecting pressure gauge.
4. vacuum pressure controller according to claim 1 is characterized in that, described two vacuum degree control unit or pressure control unit (3,4) link to each other with described air inlet solenoid valve (6) with the described solenoid valve of bleeding (5) by cable respectively; Described vacuum pressure controller also comprises and is installed in last two the vacuum cable splices of seal box (2) (10,11);
Wherein the cable of described first vacuum degree control unit in the seal box (2) or pressure control unit (3) links to each other by the cable of the outer described solenoid valve of bleeding (5) of described first vacuum cable splice (10) and seal box (2);
Wherein the cable of described second vacuum degree control unit in the seal box (2) or pressure control unit (4) links to each other by the cable of the outer described air inlet solenoid valve (6) of described first vacuum cable splice (11) and seal box (2).
5. vacuum pressure controller according to claim 1 is characterized in that, described vacuum pressure controller also comprises two the line seal interfaces (13,14) that are installed on the seal box (2);
Wherein said first vacuum degree control unit or pressure control unit (3) link to each other with described connecting pipeline (92) by first line seal interface (13);
Wherein second vacuum degree control unit or pressure control unit (4) link to each other with described connecting pipeline (93) by second line seal interface (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020173910 CN201780511U (en) | 2010-04-29 | 2010-04-29 | Vacuum pressure controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020173910 CN201780511U (en) | 2010-04-29 | 2010-04-29 | Vacuum pressure controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201780511U true CN201780511U (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020173910 Expired - Fee Related CN201780511U (en) | 2010-04-29 | 2010-04-29 | Vacuum pressure controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201780511U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636311A (en) * | 2012-04-23 | 2012-08-15 | 中国环境科学研究院 | Alarm device of rotary evaporator vacuum system |
| CN114542779A (en) * | 2020-11-26 | 2022-05-27 | 株式会社岛津制作所 | Vacuum valve and estimation device |
-
2010
- 2010-04-29 CN CN 201020173910 patent/CN201780511U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636311A (en) * | 2012-04-23 | 2012-08-15 | 中国环境科学研究院 | Alarm device of rotary evaporator vacuum system |
| CN114542779A (en) * | 2020-11-26 | 2022-05-27 | 株式会社岛津制作所 | Vacuum valve and estimation device |
| CN114542779B (en) * | 2020-11-26 | 2023-05-23 | 株式会社岛津制作所 | Vacuum valve and estimating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20130429 |