CN103058799A - Device and method for removing low molecular substances in casting PBX slurry - Google Patents
Device and method for removing low molecular substances in casting PBX slurry Download PDFInfo
- Publication number
- CN103058799A CN103058799A CN2013100362489A CN201310036248A CN103058799A CN 103058799 A CN103058799 A CN 103058799A CN 2013100362489 A CN2013100362489 A CN 2013100362489A CN 201310036248 A CN201310036248 A CN 201310036248A CN 103058799 A CN103058799 A CN 103058799A
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- Prior art keywords
- hopper
- receiving hopper
- slurry
- pbx
- stopcock
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- 239000002002 slurry Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000126 substance Substances 0.000 title abstract description 6
- 238000005266 casting Methods 0.000 title abstract 5
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 69
- 239000003814 drug Substances 0.000 claims description 54
- 230000001846 repelling effect Effects 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 229940079593 drug Drugs 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 8
- 239000002360 explosive Substances 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 238000002309 gasification Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000007790 solid phase Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- -1 vinylbenzene small molecules Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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Abstract
The invention discloses a device for removing low molecular substances in casting PBX slurry. The device comprises a storage hopper, a distribution tray and a receiving hopper, wherein the storage hopper and the receiving hopper are connected into an integral body in an up-and-down sealing mode; the distribution tray is connected and sealed in a discharge port end surface of the storage hopper; distribution holes with diameters of 2-8mm are distributed in the distribution tray; the neck of the discharge port of the storage hopper is provided with a plug valve; the side surface of the receiving hopper is connected with a vacuum extractor, and the neck of the discharge port is provided with a plug valve; and when the two plug valves are closed simultaneously, the receiving hopper can become a closed space. The invention also discloses a method for removing low molecular substances in casting PBX slurry by using the device. The invention can be used for successfully removing air, styrene and other low molecular substances in the casting PBX slurry, and avoid the defects of bubbles in the slurry, thereby enhancing the internal quality and safety performance of the casting PBX slurry. The invention has wide application prospects in conventional warhead PBX slurry.
Description
Technical field
The invention belongs to energetic material field Traditional Chinese medicine pulp and take off the low-molecular material technology, be specifically related to repelling device and the method for low-molecular material in a kind of cast PBX medicine slurry
Background technology
Cast PBX is a kind of pyrotechnic composition of excellence, has the energy height, sensitivity is low, mechanical property is excellent and the advantage such as good environmental adaptability, and this explosive has become the novel pyrotechnic composition of main flow in the global range at present.Cast PBX is comprised of liquid phase polymeric adhesion system and solid phase high energy single chmical compound explosive, compare with the castexplosive of liquid phase about 35%, liquid content about 10% in the cast PBX prescription, liquid content is lower, and liquid composition is mainly the relatively high polymer performed polymer of viscosity, therefore cast PBX medicine slurry viscosity is relatively high, the low-molecular materials such as air that unreacted is introduced in vinylbenzene small molecules and the mixing process completely in the starting material are difficult for overflowing, cause air blister defect occurring in the powder charge product, the safety performance of powder charge is reduced greatly.Therefore cast PBX medicine slurry is carried out low-molecular material and remove processing, avoid powder charge inside air blister defect to occur and have very important significance.
Summary of the invention
The repelling device and the method that the purpose of this invention is to provide low-molecular material in a kind of novel cast PBX medicine slurry.Utilize the effectively various lower-molecular substances in the Repellent slurry of these apparatus and method.
The technical solution used in the present invention is as follows:
The repelling device of low-molecular material in a kind of cast PBX medicine slurry, comprise hopper, material separating disc and receiving hopper, wherein, hopper is connected as a whole with the receiving hopper upper-lower seal, material separating disc is sealedly attached to the discharge port end face of hopper, the distribution diameter scope is the material-distributing hole of 2-8mm on the material separating disc, and the diameter of material-distributing hole designs according to liquid content in the pyrotechnic composition (or viscosity), and the medicine slurry is dispersed as much as possible.The discharge port neck of hopper is installed stopcock, and the receiving hopper side is provided with the mouth of pipe, the discharge port neck that connect vacuum extractor stopcock is installed, and receiving hopper becomes an enclosed space during simultaneously closed two stopcocks.
Further, described hopper is with receiving hopper, material separating disc and all adopt screw to connect being connected of hopper, and the sealing-ring sealing is all adopted in sealing.
The expelling method of low-molecular material in a kind of cast PBX medicine slurry, adopt the repelling device of low-molecular material in the described cast PBX medicine slurry also mainly to may further comprise the steps:
(1) assembling repelling device: with hopper and material separating disc assembling, then complete installation is to receiving hopper;
(2) closed hopper stopcock is poured pending medicine slurry into hopper;
(3) closed receiving hopper stopcock vacuumizes receiving hopper;
(4) when vacuum tightness reaches preset value in the receiving hopper, slowly open the hopper stopcock, aperture by the regulating cock valve makes pending medicine slurry flow out from hopper with certain flow rate, after the material separating disc shunting, flow in the receiving hopper, because receiving hopper is interior for vacuumizing state, low-molecular material in the little medicine slurry stream is the boiling point step-down under low pressure, gasification is overflowed, be pumped subsequently, thereby the low-molecular material in the medicine slurry is purged, and phase-state change under low pressure can not occur in effective each composition of PBX explosive, can not be affected in the vacuum-treat process;
(5) after pending medicine slurry all enters receiving hopper, stop to vacuumize;
(6) unloading hopper and material separating disc opened the receiving hopper stopcock and the medicine slurry is injected the sample mould and solidified under preset temp.
Further, finish in described step (1)-(5) after again repeating said steps (2)-(5) to guarantee that lower-molecular substance is purged fully.
Low-molecular material repelling device and method can successfully be driven away the low-molecular materials such as air in the PBX medicine slurry and vinylbenzene in the cast PBX medicine slurry, avoid institute powder charge inside to have air blister defect, improve powder charge internal soundness and the safety performance of cast PBX.
Description of drawings
Fig. 1 is repelling device structural representation of the present invention;
Fig. 2 is material separating disc structural representation of the present invention;
Fig. 3 is the X-ray check figure of embodiment 1 gained sample;
Fig. 4 is the X-ray check figure of embodiment 2 gained samples;
Fig. 5 is the X-ray check figure of embodiment 3 gained samples.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Embodiment 1
The repelling device of low-molecular material in a kind of cast PBX medicine slurry, as shown in Figure 1, this device comprises hopper 1, material separating disc 2 and receiving hopper 3, wherein, hopper 1 connects into as a whole with receiving hopper 3 upper-lower seal, material separating disc 2 is sealedly attached to the discharge port end face of hopper 1, and the distribution diameter scope is the material-distributing hole of 5-8mm on the material separating disc 2, as shown in Figure 2.The discharge port neck of hopper 1 is installed stopcock 11, and receiving hopper 3 sides arrange the mouth of pipe 31, the discharge port neck that connect vacuum extractor stopcock 32 is installed, and simultaneously closed two stopcocks 11 and 32 o'clock receiving hoppers 3 become an enclosed space.
Further, described hopper 1 is with receiving hopper 3, material separating disc 2 and all adopt screw to connect being connected of hopper 1, and the sealing-ring sealing is all adopted in sealing.
The expelling method of low-molecular material in a kind of cast PBX medicine slurry, adopt the repelling device of low-molecular material in the described cast PBX medicine slurry also mainly to may further comprise the steps:
(1) assembling repelling device: with hopper 1 and material separating disc 2 assemblings, complete installation is to receiving hopper 3 more first;
(2) closed hopper stopcock 11, with liquid phase be 16 weight parts, solid phase be 84 weight parts wait locate
Reason PBX medicine slurry is poured hopper 1 into;
(3) closed receiving hopper stopcock 32 vacuumizes receiving hopper 3;
(4) when vacuum meter displayed value during less than 0.080Mpa, slowly open hopper stopcock 11, aperture by regulating cock valve 11 makes pending medicine slurry flow out from hopper 1 with certain flow rate, after material separating disc 2 shuntings, flow in the receiving hopper 3, because receiving hopper 3 is interior for vacuumizing state, low-molecular material in the little medicine slurry stream is the boiling point step-down under low pressure, gasification is overflowed, be pumped subsequently, thereby the low-molecular material in the medicine slurry is purged, and phase-state change under low pressure can not occur in effective each composition of PBX explosive, can not be affected in the vacuum-treat process;
(5) after pending medicine slurry all enters receiving hopper 3, stop to vacuumize;
(6) then unloading hopper and material separating disc are opened receiving hopper stopcock 32 the medicine slurry are injected sample mould and at a certain temperature curing.
The gained solidified sample is inner without obvious air blister defect, as shown in Figure 3 through X-ray check.
The repelling device of low-molecular material in a kind of cast PBX medicine slurry, as shown in Figure 1, this device comprises hopper 1, material separating disc 2 and receiving hopper 3, wherein, hopper 1 is connected as a whole with receiving hopper 3 upper-lower seal, material separating disc 2 is sealedly attached to the discharge port end face of hopper 1, and the distribution diameter scope is the material-distributing hole of 3.5-5mm on the material separating disc 2, as shown in Figure 2.The discharge port neck of hopper 1 is installed stopcock 11, and receiving hopper 3 sides arrange the mouth of pipe 31, the discharge port neck that connect vacuum extractor stopcock 32 is installed, and simultaneously closed two stopcocks 11 and 32 o'clock receiving hoppers 3 become an enclosed space.
Further, described hopper 1 is with receiving hopper 3, material separating disc 2 and all adopt screw to connect being connected of hopper 1, and the sealing-ring sealing is all adopted in sealing.
The expelling method of low-molecular material in a kind of cast PBX medicine slurry, adopt the repelling device of low-molecular material in the described cast PBX medicine slurry also mainly to may further comprise the steps:
(1) assembling repelling device: with hopper 1 and material separating disc 2 assemblings, complete installation is to receiving hopper 3 more first;
(2) closed hopper stopcock 11, with liquid phase be 12 weight parts, solid phase be 88 weight parts wait locate
Reason PBX medicine slurry is poured hopper 1 into;
(3) closed receiving hopper stopcock 32 vacuumizes receiving hopper 3;
(4) when vacuum meter displayed value during less than 0.080Mpa, slowly open hopper stopcock 11, aperture by regulating cock valve 11 makes pending medicine slurry flow out from hopper 1 with certain flow rate, after material separating disc 2 shuntings, flow in the receiving hopper 3, because receiving hopper 3 is interior for vacuumizing state, low-molecular material in the little medicine slurry stream is the boiling point step-down under low pressure, gasification is overflowed, be pumped subsequently, thereby the low-molecular material in the medicine slurry is purged, and phase-state change under low pressure can not occur in effective each composition of PBX explosive, can not be affected in the vacuum-treat process;
(5) after pending medicine slurry all enters receiving hopper 3, stop to vacuumize;
(6) unloading hopper and material separating disc behind repeating said steps (2), (3), (4), (5) are opened receiving hopper stopcock 32 medicine slurry injection sample mould are also solidified at a certain temperature.
The gained solidified sample is inner without obvious air blister defect, as shown in Figure 4 through X-ray check.
The repelling device of low-molecular material in a kind of cast PBX medicine slurry, as shown in Figure 1, this device comprises hopper 1, material separating disc 2 and receiving hopper 3, wherein, hopper 1 is connected as a whole with receiving hopper 3 upper-lower seal, material separating disc 2 is sealedly attached to the discharge port end face of hopper 1, and the distribution diameter scope is the material-distributing hole of 2-4mm on the material separating disc 2, as shown in Figure 2.The discharge port neck of hopper 1 is installed stopcock 11, and receiving hopper 3 sides connect vacuum extractor 31, the discharge port neck is installed stopcock 32, and simultaneously closed two stopcocks 11 and 32 o'clock receiving hoppers 3 become an enclosed space.
Further, described hopper 1 is with receiving hopper 3, material separating disc 2 and all adopt screw to connect being connected of hopper 1, and the sealing-ring sealing is all adopted in sealing.
The expelling method of low-molecular material in a kind of cast PBX medicine slurry, adopt the repelling device of low-molecular material in the described cast PBX medicine slurry also mainly to may further comprise the steps:
(1) assembling repelling device: with hopper 1 and material separating disc 2 assemblings, complete installation is to receiving hopper 3 more first;
(2) closed hopper stopcock 22 is that 12 weight parts, solid phase are that the pending PBX medicine slurry of 88 weight parts is poured hopper 1 into liquid phase;
(3) closed receiving hopper stopcock 32 vacuumizes receiving hopper 3;
(4) when vacuum meter displayed value during less than 0.080Mpa, slowly open hopper stopcock 11, aperture by regulating cock valve 11 makes pending medicine slurry flow out from hopper 1 with certain flow rate, after material separating disc 2 shuntings, flow in the receiving hopper 3, because receiving hopper 3 is interior for vacuumizing state, low-molecular material in the little medicine slurry stream is the boiling point step-down under low pressure, gasification is overflowed, be pumped subsequently, thereby the low-molecular material in the medicine slurry is purged, and phase-state change under low pressure can not occur in effective each composition of PBX explosive, can not be affected in the vacuum-treat process;
(5) after pending medicine slurry all enters receiving hopper 3, stop to vacuumize;
(6) unloading hopper and material separating disc behind repeating said steps (2), (3), (4), (5) are then opened receiving hopper stopcock 32 medicine slurry injection sample mould are also solidified at a certain temperature.
The gained solidified sample is inner without obvious air blister defect, as shown in Figure 5 through X-ray check.
Although invention has been described with reference to a plurality of explanatory embodiment of the present invention here, but, should be appreciated that those skilled in the art can design a lot of other modification and embodiments, these are revised and embodiment will drop within the disclosed principle scope and spirit of the application.
Claims (4)
1. the repelling device of low-molecular material during a cast PBX medicine is starched, comprise hopper, material separating disc and receiving hopper, it is characterized in that: described hopper is connected as a whole with the receiving hopper upper-lower seal, described material separating disc is sealedly attached to the discharge port end face of hopper, the distribution diameter scope is the material-distributing hole of 2-8mm on the material separating disc, the discharge port neck of described hopper is installed stopcock, the receiving hopper side is provided with the mouth of pipe, the discharge port neck that connect vacuum extractor stopcock is installed, and receiving hopper becomes an enclosed space during simultaneously closed two stopcocks.
2. the repelling device of low-molecular material during cast PBX medicine according to claim 1 is starched is characterized in that: described material separating disc is with hopper, hopper and all adopt screw to connect being connected of receiving hopper, and the sealing-ring sealing is all adopted in sealing.
3. the expelling method of low-molecular material in the cast PBX medicine slurry is characterized in that: adopt the repelling device of low-molecular material in claim 1 or the 2 described cast PBX medicines slurries and may further comprise the steps:
(1) assembling repelling device;
(2) closed hopper stopcock is poured pending medicine slurry into hopper;
(3) closed receiving hopper stopcock vacuumizes receiving hopper;
(4) open the hopper stopcock when vacuum tightness reaches preset value in the receiving hopper, the aperture by the regulating cock valve makes pending medicine slurry flow out from hopper with certain flow rate, flows in the receiving hopper after the material separating disc shunting;
(5) after pending medicine slurry all enters receiving hopper, stop to vacuumize;
(6) unloading hopper and material separating disc are opened the receiving hopper stopcock medicine slurry are injected sample mould and at a certain temperature curing.
4. the expelling method of low-molecular material in the cast PBX medicine according to claim 3 slurry is characterized in that: repeating said steps (2)-(5) again after finish described step (1)-(5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310036248.9A CN103058799B (en) | 2013-01-30 | 2013-01-30 | Device and method for removing low molecular substances in casting PBX slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310036248.9A CN103058799B (en) | 2013-01-30 | 2013-01-30 | Device and method for removing low molecular substances in casting PBX slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103058799A true CN103058799A (en) | 2013-04-24 |
| CN103058799B CN103058799B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310036248.9A Expired - Fee Related CN103058799B (en) | 2013-01-30 | 2013-01-30 | Device and method for removing low molecular substances in casting PBX slurry |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3562364A (en) * | 1968-05-06 | 1971-02-09 | Us Army | Remote propellant casting process |
| CN101550043A (en) * | 2008-04-03 | 2009-10-07 | 谭锐 | Powder dispensing and blending machine for fireworks and crackers |
| CN201587911U (en) * | 2009-12-05 | 2010-09-22 | 浏阳市东信烟花集团有限公司 | Vacuum material box for mixing pyrotechnic composition |
| CN101921158A (en) * | 2009-06-17 | 2010-12-22 | 中国航天科技集团公司第四研究院第四十二所 | Automatically controllable explosive slurry casting system |
-
2013
- 2013-01-30 CN CN201310036248.9A patent/CN103058799B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3562364A (en) * | 1968-05-06 | 1971-02-09 | Us Army | Remote propellant casting process |
| CN101550043A (en) * | 2008-04-03 | 2009-10-07 | 谭锐 | Powder dispensing and blending machine for fireworks and crackers |
| CN101921158A (en) * | 2009-06-17 | 2010-12-22 | 中国航天科技集团公司第四研究院第四十二所 | Automatically controllable explosive slurry casting system |
| CN201587911U (en) * | 2009-12-05 | 2010-09-22 | 浏阳市东信烟花集团有限公司 | Vacuum material box for mixing pyrotechnic composition |
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| CN103058799B (en) | 2015-01-07 |
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Granted publication date: 20150107 |