Puffing device for small-scale test of expanded ammonium nitrate explosive
By designing an expansion device consisting of a transparent defoaming tank and a cooling filter canister, the problems of difficult observation and high cost in small-scale tests of expanded ammonium nitrate explosives were solved, achieving both intuitive observation and cost reduction.
Patent Information
- Application Number
- CN202423162758.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing expansion tanks are not conducive to researchers observing the expansion process in the pilot production of expanded ammonium nitrate explosives, and the large amount of raw materials used results in high costs.
An expansion device comprising a defoaming tank, a cooling filter tank, and a vacuum pump was designed. The defoaming tank is made of transparent material to facilitate observation of the expansion process, and the cooling filter tank prevents steam from entering the vacuum pump, thereby reducing costs.
This allows for direct observation of the puffing process, reduces pilot-scale costs, and extends the service life of the vacuum pump.
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Figure CN223752661U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the civil blasting material technical field, concretely relates to a kind of swelling ammonium nitrate explosive pilot plant swelling device. BACKGROUND
[0002] Swelling ammonium nitrate explosive is prepared by swelling ammonium nitrate solution to obtain swelling ammonium nitrate, and then adding wood powder and composite oil phase, and the components do not contain powerful explosive and high-energy substance, and the explosive performance is excellent, which has been widely used in engineering blasting, and has become the main industrial explosive in China.The key to manufacturing swelling ammonium nitrate explosive is to swell ammonium nitrate well.The swelling process of ammonium nitrate solution is that the ammonium nitrate solution with swelling agent is evaporated at a lower boiling point under certain vacuum degree and temperature, and the ammonium nitrate forms a porous sheet crystal structure.The vacuum degree and temperature in the swelling process are the key factors affecting the quality of the product.The control of vacuum degree helps to reduce the boiling point of the solution and promote the rapid evaporation of water, while the control of temperature affects the speed and quality of ammonium nitrate crystallization.At the same time, the swelling effect of ammonium nitrate is related to the swelling agent and ammonium nitrate.Different components and contents of each substance in the swelling agent will result in different physical properties and detonation performance of the final swelling ammonium nitrate even under the same ammonium nitrate solution concentration, temperature and equipment vacuum degree.The swelling effect of different batches of ammonium nitrate and different origins of sodium nitrate is also very different under the same swelling agent and process equipment conditions.Therefore, it is very important to determine the swelling process parameters of ammonium nitrate in the research and development of swelling ammonium nitrate explosive.
[0003] At present, in the research and development of swelling ammonium nitrate explosive, the swelling of ammonium nitrate is basically completed by using a swelling tank to determine the swelling process parameters of ammonium nitrate, but the swelling tank is a production equipment, the amount of ammonium nitrate solution is large, and it is not convenient for researchers to observe the swelling process of ammonium nitrate directly, so it is necessary to design a swelling ammonium nitrate explosive pilot plant swelling device. UTILITY MODEL CONTENT
[0004] Therefore, the utility model provides a kind of swelling ammonium nitrate explosive pilot plant swelling device, to solve the problem that the swelling tank used at present is not conducive to researchers to observe the swelling process in the pilot stage and the amount of raw materials is large and the cost of pilot test is high.
[0005] To solve the above problems, the utility model provides a kind of swelling of swelling of nitramite explosive small test device, it includes the defoaming barrel for placing ammonium nitrate aqueous solution and the cooling filter tank and vacuum pump being arranged in the defoaming barrel side, the barrel body of the defoaming barrel is made of transparent material, the top of the defoaming barrel is communicated with the cooling filter tank by first connecting pipe, the cooling filter tank is connected vacuum pump, vacuum valve is set on the first connecting pipe, the barrel bottom of the defoaming barrel is provided with constant temperature heating device, vacuum hole is provided on the defoaming barrel, and the vacuum hole is connected vacuum valve.
[0006] When using, the ammonium nitrate solution to be swollen is placed in the defoaming barrel, the vacuum pump is used to make the defoaming barrel in a constant vacuum state, the constant temperature heating device is used to keep the ammonium nitrate solution in the defoaming barrel at a constant temperature, the vacuum pump and the heating device are stopped after a specified time, the vacuum valve is opened to destroy the vacuum state in the defoaming barrel, and the swollen material in the defoaming barrel can be taken out for the next test.
[0007] The defoaming barrel in the small test device is used to place the prepared ammonium nitrate solution, the barrel body of the defoaming barrel is made of transparent material (such as high-temperature-resistant explosion-proof glass), the swelling process of ammonium nitrate can be directly observed by the tester, a more intuitive and accurate reference is provided for explosive process improvement, the defoaming barrel has a simple structure, and the size can be designed according to the test requirements, so that the small test cost of swollen ammonium nitrate is effectively reduced. The setting of the cooling filter tank in the small test device of the utility model can prevent the steam material extracted from the defoaming barrel from entering the vacuum pump and damaging the vacuum pump, and the service life of the vacuum pump is effectively prolonged.
[0008] In some embodiments of the utility model, the swelling of swelling of nitramite explosive small test device further includes a buffer tank arranged on one side of the defoaming barrel, the buffer tank is communicated with the cooling filter tank through a second connecting pipe, and the vacuum pump is connected through a third connecting pipe. The setting of the buffer tank can further reduce the possibility of steam material in the defoaming barrel entering the vacuum pump, further prolong the service life of the equipment, and reduce the use cost.
[0009] In some embodiments of the utility model, a vacuum gauge is arranged on the first connecting pipe. The setting of the vacuum gauge facilitates the tester to know the vacuum condition in the defoaming barrel in real time.
[0010] In some embodiments of the utility model, the defoaming barrel is an integrally-formed sealed barrel, a feeding opening is arranged on the barrel top of the defoaming barrel, the feeding opening is connected with a feeding pipe, and a sealing cover is arranged on the feeding pipe opening. Further, the sealing cover is screw-mounted on the feeding pipe opening, which facilitates the use of the sealing cover and ensures the sealing property of the defoaming barrel. The integrally-formed defoaming barrel has better sealing property, and the vacuum pumping effect of the vacuum pump is better.
[0011] In some embodiments of the utility model, the defoaming barrel is a split forming sealing barrel, the defoaming barrel includes a barrel cover and a barrel body. Further, the connecting part of the barrel cover and the barrel body is provided with a sealing ring. The split forming defoaming barrel is more convenient for material taking, and the sealing ring provided at the connecting part of the barrel cover and the barrel body also ensures the sealing property of the defoaming barrel.
[0012] Compared with the related art, the utility model has the advantages of:
[0013] Compared with the prior art, the defoaming barrel structure is simple, and the size can be designed according to the test requirement, so that the small test cost of the expanded ammonium nitrate is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a front view structural schematic diagram of the small test expansion device for the expanded ammonium nitrate explosive provided in the utility model embodiment 1.
[0015] Figure 2 It is a three-dimensional structure schematic diagram of the feeding pipe and the sealing cover provided on the defoaming barrel in the small test expansion device for the expanded ammonium nitrate explosive provided in the utility model embodiment 1.
[0016] Figure 3 It is a front view structural schematic diagram of the small test expansion device for the expanded ammonium nitrate explosive provided in the utility model embodiment 2.
[0017] Reference signs: 1-defoaming barrel;101-barrel cover;102-barrel body;2-cooling and filtering tank;3-buffer tank;4-vacuum pump;5-first connecting pipe;6-second connecting pipe;7-third connecting pipe;8-vacuum valve;9-vacuum gauge;10-vacuum breaking hole;11-vacuum breaking valve;12-constant temperature heating plate;13-feeding opening;14-feeding pipe;15-sealing cover;16-sealing ring. DETAILED DESCRIPTION
[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the present application is well suited to carry out various embodiments as broadly described herein and the above and below described features and combinations thereof are meant to be included within the scope of the present application; the terms "comprises", "comprising", "includes", "including", "having" and their variants are meant to be construed as encompassing a non-exclusive inclusion; the terms "first", "second" and the like in the description do not necessarily connote any ordinal, temporal, structural, operational or hierarchical importance, but are merely used to distinguish one element from another, and do not imply a particular order or configuration in view of the embodiments, unless stated otherwise; the terms "inner", "outer", "left", "right", "front", "back", "up", "down", "over", "under" and the like in the description are used for convenience and do not necessarily imply any particular position or configuration, except where otherwise specifically noted.
[0019] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments. It is expressly understood that the embodiments described herein are merely examples from a whole class of comparable embodiments which those skilled in the art will readily appreciate. It is also expressly understood that the description herein and the claims that follow are intended to cover all such variations as fall within the scope of the application. It should be understood that they are merely examples of the application that are shown and described, and that components of the application can be arranged and combined in a variety of different configurations, all of which are clearly within the scope of the application.
[0020] Embodiment 1: refer to Figure 1 , Figure 2 As shown in the figure, the embodiment provides a kind of swelling ammonium nitrate explosive small test swelling device, it includes defoaming barrel 1, the defoaming barrel 1 is used to place the ammonium nitrate aqueous solution prepared, the defoaming barrel 1 is integrally formed with high-temperature-resistant explosion-proof glass, the top of the defoaming barrel 1 is provided with feeding opening 13 and vacuum breaking hole 10, feeding pipe 14 is installed on the feeding opening 13, sealing cover 15 is screwed on the pipe orifice of feeding pipe 14, vacuum breaking valve 11 is installed on the vacuum breaking hole 10;Including the cooling filter tank 2, buffer tank 3 and vacuum pump 4 arranged in one side of the defoaming barrel 1, the cooling filter tank 2 is communicated with the top of the defoaming barrel 1 by first connecting pipe 5, the buffer tank 3 is communicated with the cooling filter tank 2 by second connecting pipe 6, the buffer tank 3 is connected with the vacuum pump 4 by third connecting pipe 7, vacuum valve 8 and vacuum gauge 9 are arranged on the first connecting pipe 5, constant temperature hot plate 12 is arranged on the bottom of the defoaming barrel 1.
[0021] In the embodiment, when the swelling test of the ammonium nitrate solution of the swollen ammonium nitrate explosive is carried out, the sealing cover 15 is opened, the prepared ammonium nitrate solution is put into the digestion barrel 1 through the feeding pipe 14, the feeding pipe 14 is covered with the sealing cover 15 after the discharging is completed, the digestion barrel 1 is in a sealed state, the vacuum valve 8 is opened, the vacuum pump 4 is started, the constant vacuum degree (for example, -90 KPa) of the digestion barrel 1 is reached, the constant temperature hot plate 12 is opened, the material in the digestion barrel 1 is in a constant temperature state (for example, 120℃), under the action of the vacuum low pressure, the water in the ammonium nitrate solution in the digestion barrel is rapidly evaporated, the ammonium nitrate is swollen and crystallized, the high temperature water vapor evaporated is extracted into the cooling filter tank 2 and the buffer tank 3 and condensed into water, when the swelling reaches the specified time, the vacuum valve 8 is closed, the vacuum pump 4 and the constant temperature hot plate 12 are closed, the vacuum breaking valve 11 is opened, the vacuum state in the digestion barrel 1 is broken, and then the sealing cover 15 is opened to take out the swollen material from the feeding opening 13 for the next test of the swollen ammonium nitrate explosive.
[0022] Embodiment 2: see Figure 3 As shown in the figure, the embodiment provides a kind of swollen ammonium nitrate explosive small test swelling device, it includes digestion barrel 1, the digestion barrel 1 is used to place the prepared ammonium nitrate solution, the digestion barrel 1 is made of high-temperature-resistant explosion-proof glass, the digestion barrel 1 includes barrel cover 101 and barrel body 102, sealing ring 16 is arranged at the connecting place of barrel cover 101 and barrel body 102, vacuum breaking hole 10 is arranged on barrel cover 101, vacuum breaking valve 11 is installed on vacuum breaking hole 10;Including cooling filter tank 2, buffer tank 3 and vacuum pump 4 arranged on one side of the digestion barrel 1, the cooling filter tank 2 is communicated with the top of the digestion barrel 1 by first connecting pipe 5, the buffer tank 3 is communicated with the cooling filter tank 2 by second connecting pipe 6, the buffer tank 3 is connected with the vacuum pump 4 by third connecting pipe 7, vacuum valve 8 and vacuum gauge 9 are arranged on the first connecting pipe 5, and constant temperature hot plate 12 is arranged on the bottom of the digestion barrel 1.
[0023] In the embodiment, when the swelling test of the ammonium nitrate solution of the swollen ammonium nitrate explosive is carried out, the sealing cover 15 is opened, the prepared ammonium nitrate solution is put into the digestion barrel 1 through the feeding pipe 14, the feeding pipe 14 is covered with the sealing cover 15 after the discharging is completed, the digestion barrel 1 is in a sealed state, the vacuum valve 8 is opened, the vacuum pump 4 is started, the constant vacuum degree (for example, -90 KPa) of the digestion barrel 1 is reached, the constant temperature hot plate 12 is opened, the material in the digestion barrel 1 is in a constant temperature state (for example, 120℃), under the action of the vacuum low pressure, the water in the ammonium nitrate solution in the digestion barrel is rapidly evaporated, the ammonium nitrate is swollen and crystallized, the high temperature water vapor evaporated is extracted into the cooling filter tank 2 and the buffer tank 3 and condensed into water, when the swelling reaches the specified time, the vacuum valve 8 is closed, the vacuum pump 4 and the constant temperature hot plate 12 are closed, the vacuum breaking valve 11 is opened, the vacuum state in the digestion barrel 1 is broken, and then the sealing cover 15 is opened to take out the swollen material from the feeding opening 13 for the next test of the swollen ammonium nitrate explosive.
[0024] In summary, the small test swelling device provided by the embodiment of the utility model is used for placing the prepared ammonium nitrate aqueous solution, the barrel body of the defoaming barrel is made of transparent material (such as high-temperature-resistant explosion-proof glass), the swelling process of ammonium nitrate can be directly observed by the tester, more intuitive and accurate reference is provided for explosive process improvement, meanwhile, the defoaming barrel has simple structure, and the size can be designed according to test requirements, the small test cost of the swollen ammonium nitrate is effectively reduced; the setting of the cooling filter tank and the buffer tank can prevent the steam material drawn out from the defoaming barrel from entering the vacuum pump and damaging the vacuum pump, and the service life of the vacuum pump is effectively prolonged.
[0025] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented by other ways.
[0026] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit the protection scope of the utility model. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can combine, add or delete the features in the embodiments of the utility model according to the circumstances without creative labor, so as to obtain different other technical solutions which do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of the utility model.
Claims
1. A kind of swelling ammonium nitrate explosive small test swelling device, it is characterized by: The device comprises a defoaming barrel for placing ammonium nitrate aqueous solution, a cooling filter tank and a vacuum pump arranged on one side of the defoaming barrel, the barrel body of the defoaming barrel is made of transparent material, the top of the defoaming barrel is communicated with the cooling filter tank through a first connecting pipe, the cooling filter tank is connected with the vacuum pump, a vacuum valve is arranged on the first connecting pipe, a constant temperature heating device is arranged on the bottom of the defoaming barrel, a vacuum breaking hole is arranged on the defoaming barrel, and the vacuum breaking hole is connected with a vacuum breaking valve.
2. The device according to claim 1, wherein: The device further comprises a buffer tank arranged on one side of the defoaming barrel, the buffer tank is communicated with the cooling filter tank through a second connecting pipe and connected with the vacuum pump through a third connecting pipe.
3. The device according to claim 1, wherein: the device is a small-scale device for swelling of nitramine explosive. A vacuum gauge is arranged on the first connecting pipe.
4. The device according to claim 1, wherein: The defoaming barrel is an integrally formed sealed barrel, a feeding opening is arranged on the top of the defoaming barrel, the feeding opening is connected with a feeding pipe, and a sealing cover is arranged on the feeding pipe opening.
5. The pilot plant swelling device for swelling nitramine explosive according to claim 4, characterized in that: The sealing cover is screwed on the feeding pipe opening.
6. The pilot scale prilling device for prilling ammonium nitrate explosive according to claim 1, wherein: The defoaming barrel is a split formed sealed barrel, and the defoaming barrel comprises a barrel cover and a barrel body.
7. The pilot plant swelling device for swelling nitramine explosive according to claim 6, characterized in that: A sealing ring is arranged at the connection between the barrel cover and the barrel body.