CN201735465U - Liquid nitrogen ejector of drum type freezing trimmer - Google Patents
Liquid nitrogen ejector of drum type freezing trimmer Download PDFInfo
- Publication number
- CN201735465U CN201735465U CN2010202104197U CN201020210419U CN201735465U CN 201735465 U CN201735465 U CN 201735465U CN 2010202104197 U CN2010202104197 U CN 2010202104197U CN 201020210419 U CN201020210419 U CN 201020210419U CN 201735465 U CN201735465 U CN 201735465U
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- liquid nitrogen
- feed tube
- liquid
- drum type
- temperature
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Abstract
The utility model belongs to a rubber and plastic product machine, in particular to a liquid nitrogen ejector of a drum type freezing trimmer which includes a shell, a nozzle, a liquid intake tube, a connecting bend and electromagnet valves. The improved scheme is as follows: the outer end of the liquid intake tube is provided with two branch liquid intake tubes the section surfaces of which are not less than 50 percent of that of the liquid intake tube; the electromagnet valves are respectively arranged on the branch liquid intake tubes; the nozzle is of a frustum shape; and a jet hole is arranged on a conical surface. The liquid nitrogen ejector of the drum type freezing trimmer can be adopted to effectively save the dosage of liquid hydrogen when trimming the rubber and plastic products, improve the working efficiency, reduce the production cost and improve the applicability on trimming products.
Description
Technical field
The utility model relates to product of rubber and plastic machinery, the freezing trimmer liquid nitrogen spray of particularly a kind of drum-type device.
Background technology
The rubber and plastic pressing must be with residual die joint, cast gate after moulding, walk slitter edges such as glue groove peels off.In the prior art, be to adopt the drum-type trimmer to carry out, its operation principle is that the rubber and plastic pressing is placed in the cylinder, in cylinder, spray into liquid nitrogen then, make product of rubber and plastic sharply cool to it below vitrification point, utilize the built-in gusset bar of cylinder to stir product of rubber and plastic and make it bump mutually, push, its slitter edge is peeled off, reach the purpose of mechanization deburring, labor savings.At present, the liquid nitrogen spray device of trimmer has only a heavy caliber feed tube by solenoid control, and by temperature controller and Controlled by Programmable Controller, the shower nozzle that is connected with feed tube is a spherical plate, and spray-hole evenly is opened on the spherical plate.Find that through using there is following weak point in this liquid nitrogen spray device: liquid nitrogen directly is sprayed onto the gas outlet end during first work under pressure, sharply expands and goes out exhaust outlet, causes the liquid nitrogen waste; It two is that the rapid reduction of air outlet temperature causes false temperature easily, because the temp probe of temperature controller is placed on exhaust port side, does not actually reach freezing operating temperature and material is inner, under the cylinder high speed rotating, damages product design easily; It three is when temperature in the cylinder raise to need is replenished liquid nitrogen, only need in a small amount liquid nitrogen just can, yet because the bore of feed tube flow big, liquid nitrogen is big, the liquid nitrogen gasification back outwash that expands also causes waste.
The utility model content
The purpose of this utility model is to solve the wasteful problem of liquid nitrogen that existing cylinder type cold east trimmer liquid nitrogen spray device exists, and a kind of liquid nitrogen consumption of saving is provided, and improves the freezing trimmer liquid nitrogen spray of the drum-type device of deburring rate and deburring quality.
Above-mentioned task realizes by this way: the freezing trimmer liquid nitrogen spray of a kind of drum-type device, include cylinder spindle nose, shower nozzle, feed tube, connecting bend and magnetic valve, this improvement project is: be provided with the branch feed tube that two sectional areas are not less than feed tube 50% sectional area at least in the feed tube outer end, on minute feed tube, be respectively equipped with magnetic valve, described shower nozzle is a taper type, and spray-hole is opened on the conical surface.
The purpose of this utility model also can take following measure further perfect:
Between cylinder spindle nose and feed tube, be provided with muff, to reduce the temperature loss of liquid nitrogen.
On two branch feed tubes, manual modulation valve is set also, so that can be when emergent by manual control liquid supply rate.
The utility model is like this work: before the use, as prior art, magnetic valve is connected with Programmable Logic Controller with temperature controller, and according to this product external surfaces hardening temperature of property settings and the complete hardening temperature of the product of required deburring.When the temperature in the cylinder did not reach the product external surfaces hardening temperature, the magnetic valve of two branch feed tubes was opened simultaneously during work, and liquid nitrogen sprays in from shower nozzle toward cylinder through feed tube, and the temperature in the cylinder is reduced rapidly.When temperature drops to the product external surfaces hardening temperature, close wherein branch feed tube, reduce for amount of liquid nitrogen.When the temperature in the cylinder reaches the complete hardening temperature of product, promptly arrive operating temperature, with the magnetic valve of two branch feed tubes of Close All, stop toward the interior feed flow nitrogen of cylinder.When temperature raises above operating temperature, open the additional liquid nitrogen of a branch feed tube, and when temperature reaches operating temperature again, close this minute feed tube again, so constantly open and close, make the comparatively stable operating temperature of the interior maintenance of cylinder.If find that the fluid replacement temperature fluctuation is bigger, can adjust by manual modulation valve.
The utility model compared with prior art has following advantage:
1, because the utility model is provided with two branch feed tubes that the cross section is less on feed tube, and be provided with magnetic valve thereon, can regulate by the branch feed tube of a low discharge when temperature reaches product surface hardening temperature and operating temperature in cylinder, the temperature in the index drum comparatively exactly not only, and more reasonably save the liquid nitrogen consumption.
2, because shower nozzle of the present utility model is a taper type, spray-hole is opened on the conical surface, end face is a blind plate, liquid nitrogen sprays in can only be from the shower nozzle conical surface toward cylinder, can not avoid the appearance of false temperature, in cylinder, have than Chang De rotation process of revolving and just discharge from exhaust outlet towards the exhaust outlet direct injection, improve the utilization rate of liquid nitrogen greatly, further saved the liquid nitrogen consumption.
After tested, can save 10～20% liquid nitrogen behind employing the utility model, the saving working time reaches 10～15%, and the deburring rate reaches more than 98%, and breakage rate has improved by the adaptability of deburring product in addition less than 0.5%.
Description of drawings
Fig. 1 is the cross-sectional schematic of the freezing trimmer liquid nitrogen spray of a kind of drum-type device embodiment.
The specific embodiment
Below in conjunction with accompanying drawing concrete structure of the present utility model is further described.
With reference to Fig. 1, the freezing trimmer liquid nitrogen spray of a kind of drum-type device, include cylinder spindle nose 1, shower nozzle 2, feed tube 3, connecting bend 4 and magnetic valve 5, its improvements are: be provided with the branch feed tube 6 that two sectional areas are not less than feed tube 3 sectional areas 50% at least in the outer end of feed tube 3, it is suitable that its sectional area is generally 50～60% feed tubes, 3 sectional areas.Be connected with temperature controller with Programmable Logic Controller in the electric cabinet being equipped with 5, two magnetic valves 5 of magnetic valve on minute feed tube 6.Shower nozzle 2 of the present utility model is a taper type, and spray-hole 7 is opened on the conical surface, and the frustum end face is an orbicule, does not establish spray-hole.
Embodiment 1, is provided with muff 8 between cylinder spindle nose 1 and feed tube 3, and these muff 8 usefulness polytetrafluoroethylene (PTFE) are made.
Embodiment 2, respectively are provided with a manual modulation valve 9 on two branch feed tubes 6.
Claims (3)
1. the freezing trimmer liquid nitrogen spray of drum-type device, include cylinder spindle nose (1), shower nozzle (2), feed tube (3), connecting bend (4) and magnetic valve (5), it is characterized in that: be provided with the branch feed tube (6) that two sectional areas are not less than feed tube (3) 50% sectional areas at least in feed tube (3) outer end, on a minute feed tube (6), be respectively equipped with magnetic valve (5), described shower nozzle (2) is a taper type, and spray-hole (7) is opened on the conical surface.
2. injector according to claim 1 is characterized in that being provided with muff (8) between cylinder spindle nose (1) and feed tube (3).
3. injector according to claim 1 is characterized in that respectively being provided with a manual modulation valve (9) on two branch feed tubes (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202104197U CN201735465U (en) | 2010-05-25 | 2010-05-25 | Liquid nitrogen ejector of drum type freezing trimmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202104197U CN201735465U (en) | 2010-05-25 | 2010-05-25 | Liquid nitrogen ejector of drum type freezing trimmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201735465U true CN201735465U (en) | 2011-02-09 |
Family
ID=43550746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202104197U Expired - Fee Related CN201735465U (en) | 2010-05-25 | 2010-05-25 | Liquid nitrogen ejector of drum type freezing trimmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201735465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016062215A1 (en) * | 2014-10-22 | 2016-04-28 | 巅峰资源管理有限公司 | Liquid nitrogen spray nozzle |
-
2010
- 2010-05-25 CN CN2010202104197U patent/CN201735465U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016062215A1 (en) * | 2014-10-22 | 2016-04-28 | 巅峰资源管理有限公司 | Liquid nitrogen spray nozzle |
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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: 20110209 Termination date: 20130525 |