CN210484218U - Steam jet vacuum pumping structure for recycling granulation - Google Patents
Steam jet vacuum pumping structure for recycling granulation Download PDFInfo
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- CN210484218U CN210484218U CN201921541686.XU CN201921541686U CN210484218U CN 210484218 U CN210484218 U CN 210484218U CN 201921541686 U CN201921541686 U CN 201921541686U CN 210484218 U CN210484218 U CN 210484218U
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Abstract
The utility model provides a retrieve granulation steam injection evacuation structure, includes multistage steam jet pump and retrieves the granulation mixer, multistage steam jet pump establishes ties, sets up the condenser between pump and the pump, steam jet pump with the shell side of condenser is connected, and its steam inlet connects the steam conduit, is equipped with first valve on this steam conduit, this steam jet pump the induction port with retrieve the tank connection of granulation mixer, the cooling water entry connection cooling water pipeline of condenser, be equipped with the second valve on the cooling water pipeline. The utility model discloses set up the second valve on the cooling water pipeline, close the cooling water under the condition that does not need the evacuation, just so can not cause the condition that the cooling water downdraft in vacuum pipeline and the filter jar.
Description
Technical Field
The utility model belongs to film production and processing field especially relates to a retrieve granulation steam jet evacuation structure.
Background
During the production process of the nylon film, a plurality of waste films are generated, and the waste films are recycled and granulated for secondary production.
Before recycling and granulating, the waste materials need to be stirred, the vacuum degree of a tank body of the stirrer needs to meet the requirement during stirring, and the stirrer is usually vacuumized through a vacuum pipeline by a steam jet vacuumizing device.
The steam jet vacuum extractor consists of several stages of steam jet pumps and condensers, several steam jet pumps are connected serially for use, and condensers are added between the pumps to condense steam and reach relatively high vacuum degree. The steam jet vacuum pump is a vacuum pump which uses the gas dynamic principle that static pressure energy and kinetic energy are converted into each other when fluid flows to form vacuum. The water vapor with certain pressure reaches sonic velocity when passing through the throat diameter of the Laval nozzle, static pressure energy is completely converted into kinetic energy when reaching the diffusion part of the nozzle, supersonic velocity is reached, vacuum is formed at the outlet of the nozzle, the pumped body is pumped into the suction chamber under the action of pressure difference, the steam with supersonic velocity is mixed and enters the Venturi tube, then the steam is discharged from the diffusion tube of the Venturi tube at subsonic velocity, simultaneously the velocity of the mixed gas is gradually reduced, the pressure is increased along with the reduction, and then the steam is discharged from the discharge port.
At present, when the stirrer is vacuumized, a steam valve is firstly opened, then a time delay of 5 seconds is carried out, a main valve of a tank body of the stirrer is opened, and a cooling water inlet of a condenser is always kept in a water-passing state. In normal use we have found that there is a slight leakage from the steam valve when there is no vacuum being drawn, and the cooling water is drawn back into the vacuum line and blender jar as it is being held through. Therefore, the vacuum degree can not be reached and the time for vacuumizing is long when the next tank of raw material is vacuumized, steam is wasted, the raw material can not be kept up after the time is prolonged, the machine halt is caused, and meanwhile, if the valve is slightly leaked, the valve is replaced every time, so that the maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the technical problems, the recovery granulation steam jet vacuumizing structure is provided.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a retrieve granulation steam injection evacuation structure, includes multistage steam jet pump and retrieves the granulation mixer, multistage steam jet pump establishes ties, sets up the condenser between pump and the pump, steam jet pump with the shell side of condenser is connected, and its steam inlet connects the steam conduit, is equipped with first valve on this steam conduit, this steam jet pump the induction port with retrieve the tank connection of granulation mixer, the cooling water entry connection cooling water pipeline of condenser, be equipped with the second valve on the cooling water pipeline.
And a filtering device is arranged between the air suction port of the steam jet pump and the recycling granulation stirrer.
The second valve is an electromagnetic valve.
This scheme still includes the cooling water house steward, the cooling water pipe connection on cooling water house steward and a plurality of condensers.
And a water outlet of the condenser is connected with the water collecting tank through a pipeline.
The utility model discloses set up the second valve on the cooling water pipeline, close the cooling water under the condition that does not need the evacuation, just so can not cause the condition that the cooling water downdraft in vacuum pipeline and the filter jar.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments:
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in FIG. 1, a recycling granulation steam jet vacuum pumping structure comprises a multi-stage steam jet pump 11 and a recycling granulation mixer 12.
The multi-stage steam jet pump 11 is connected in series, and a condenser 13 is arranged between the pumps.
The steam jet pump 11 is connected with the shell side of the condenser 13, the steam inlet thereof is connected with a steam pipeline, the steam pipeline is provided with a first valve 14, and the air suction port of the steam jet pump 11 is connected with the tank body of the recycling granulation mixer 12.
Preferably, a filter 18 is provided between the suction port of the steam jet pump 11 and the recovery granulator mixer 12 to prevent impurities in the recovery granulator mixer 12 from being sucked into the steam jet pump 11 during evacuation.
A cooling water inlet of the condenser 13 is connected to a cooling water line 13a, and a second valve 15 is provided in the cooling water line 13 a.
In the present embodiment, the second valve 15 is a solenoid valve.
The cooling water lines 13a of the plurality of condensers 13 are connected to a cooling water header 16, and the cooling water enters the cooling water header 16 and then enters the cooling water lines of the condensers, respectively.
This scheme still includes the cooling water house steward, the cooling water pipe connection on cooling water house steward and a plurality of condensers.
The drain of the condenser 13 is connected to a sump 17 via a pipe, and the liquid discharged from the condenser 13 is collected in the sump 17.
The utility model discloses set up second valve 15 on cooling water pipeline 13a, close the cooling water under the condition that does not need the evacuation, just so can not cause the condition that the cooling water downdraft vacuum pipe and filter tank in. When the vacuum pumping is needed, the second valve 15 is firstly opened to enable cooling water in the condenser 13 to flow through to meet the vacuum pumping condition, the first valve 14 on the steam pipeline is opened after the time delay of 5 seconds, and the main valve of the tank body of the stirrer is opened after the time delay of 5 seconds to enable the tank body to be vacuumized.
However, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention and not used as a limitation of the present invention, and that the changes and modifications to the above embodiments are within the scope of the appended claims as long as they are within the true spirit of the present invention.
Claims (5)
1. The utility model provides a retrieve granulation steam injection evacuation structure, includes multistage steam jet pump and retrieves the granulation mixer, multistage steam jet pump is established ties, sets up the condenser between pump and the pump, steam jet pump with the shell side of condenser is connected, and its steam inlet connects the steam pipeline, is equipped with first valve on this steam pipeline, the induction port of this steam jet pump with retrieve the tank connection of granulation mixer, the cooling water entry connection cooling water pipeline of condenser, its characterized in that, be equipped with the second valve on the cooling water pipeline.
2. The recycling granulation steam jet vacuum pumping structure as claimed in claim 1, wherein a filtering device is provided between the suction port of the steam jet pump and the recycling granulation mixer.
3. A recycling prilling steam injection vacuum structure according to claim 1 or 2, characterized in that said second valve is a solenoid valve.
4. The recycling prill steam injection evacuator of claim 3, further comprising a cooling water manifold, said cooling water manifold being connected to cooling water lines of said plurality of condensers.
5. The recycling granulation steam jet vacuum pumping structure as claimed in claim 4, wherein the water outlet of the condenser is connected with the water collecting tank through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541686.XU CN210484218U (en) | 2019-09-17 | 2019-09-17 | Steam jet vacuum pumping structure for recycling granulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541686.XU CN210484218U (en) | 2019-09-17 | 2019-09-17 | Steam jet vacuum pumping structure for recycling granulation |
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| Publication Number | Publication Date |
|---|---|
| CN210484218U true CN210484218U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921541686.XU Active CN210484218U (en) | 2019-09-17 | 2019-09-17 | Steam jet vacuum pumping structure for recycling granulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220169496A1 (en) * | 2020-11-30 | 2022-06-02 | Ortec Expansion | Device and Method for Pumping Low Evaporation Products Under Vacuum |
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2019
- 2019-09-17 CN CN201921541686.XU patent/CN210484218U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220169496A1 (en) * | 2020-11-30 | 2022-06-02 | Ortec Expansion | Device and Method for Pumping Low Evaporation Products Under Vacuum |
| US11795050B2 (en) * | 2020-11-30 | 2023-10-24 | Ortec Expansion | Device and method for pumping low evaporation products under vacuum |
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