CN114602222A - Intrinsic safety type filtering base for energetic material - Google Patents
Intrinsic safety type filtering base for energetic material Download PDFInfo
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- CN114602222A CN114602222A CN202210079126.7A CN202210079126A CN114602222A CN 114602222 A CN114602222 A CN 114602222A CN 202210079126 A CN202210079126 A CN 202210079126A CN 114602222 A CN114602222 A CN 114602222A
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- filter disc
- lower cylinder
- cylinder body
- valve
- discharge gate
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- 239000000463 material Substances 0.000 title claims abstract description 50
- 238000001914 filtration Methods 0.000 title claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 239000000706 filtrate Substances 0.000 claims abstract description 3
- 239000012452 mother liquor Substances 0.000 claims description 35
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 15
- 238000005245 sintering Methods 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 7
- 229910001039 duplex stainless steel Inorganic materials 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 13
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- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- 239000007921 spray Substances 0.000 description 8
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- 238000009825 accumulation Methods 0.000 description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 5
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XTFIVUDBNACUBN-UHFFFAOYSA-N 1,3,5-trinitro-1,3,5-triazinane Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)C1 XTFIVUDBNACUBN-UHFFFAOYSA-N 0.000 description 1
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 1
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- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
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- 208000027418 Wounds and injury Diseases 0.000 description 1
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- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 1
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- UZGLIIJVICEWHF-UHFFFAOYSA-N octogen Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)CN([N+]([O-])=O)C1 UZGLIIJVICEWHF-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/86—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
Abstract
The invention relates to the technical field of energetic material treatment, in particular to an intrinsically safe filtering base for an energetic material. The filter disc and a cylinder cavity of the lower cylinder body jointly enclose to form a mother liquid collecting cavity for accommodating filtrate, and the lower cylinder body is correspondingly provided with a liquid discharge port so as to be communicated with the mother liquid collecting cavity; the filter disc appearance is big-end-up's horn mouth form, and the port that is located filter disc axle center department constitutes the discharge gate that can supply the solid slurry ejection of compact, and this discharge gate intercommunication outside aggregate equipment arranges the ooff valve that can open and close this discharge gate on the discharge gate. The invention can effectively avoid the problem of deposition of filter cake particles, and finally provides a prerequisite guarantee for the safe and reliable process of filtration and/or washing of energetic materials.
Description
Technical Field
The invention relates to the technical field of energetic material treatment, in particular to an intrinsically safe filtering base for an energetic material.
Background
The high-performance energetic materials comprise trinitrotoluene, hexogen, octogen, nitrogen-rich compounds and derivatives thereof and the like, and are the premise for improving the performance of advanced weapons. Different from common explosive substances, the material property is more sensitive, contains explosive groups, can react quickly, and has extremely strong destructive power; with some carelessness, it is a catastrophic result. The production process of the high-performance energetic material mostly adopts concentrated nitric acid to directly nitrate urotropine, obtains the required energetic material crystal suspension through the procedures of nitric acid cooking, crystallization, deacidification, recrystallization and the like, obtains a crystal filter cake with certain moisture content through washing and filtration, and then obtains the final product through drying and grading. Washing and filtering are indispensable in the energetic material production process and are important processes related to the quality of final products. The crystal forms of the energetic material are various, such as alpha crystal form, beta crystal form, gamma crystal form and the like, and different crystal forms show different physical characteristics, such as viscosity, fluidity, crystal volume, strength, explosion performance, stability and the like, and greatly influence the quality of the energetic material. In the process of washing the energetic material, the washed mother liquor has certain viscosity, and crystals are easily separated out to form a wall hanging phenomenon; the filter cake crystals have different crystal forms, the particle size distribution is wider, and the coarse-particle-size crystal particles are easy to deposit, so that local solid accumulation is caused, and potential safety hazards are formed; in addition, in the washing and filtering process, the materials comprise concentrated nitric acid, water or organic solvents such as acetone, ethyl acetate and the like, the temperature is generally controlled to be below 100 ℃, equipment needs to have high temperature and pressure-bearing conditions, and the materials comprise hazardous chemical substances such as nitric acid, organic solvents such as acetone, ethyl acetate and the like, and also comprise various energetic materials with unstable performance and explosiveness in mixed crystal form. Therefore, the following requirements are required for the filtration and washing apparatus: firstly, the equipment needs to be closed, pressure-bearing and temperature-resistant. Secondly, the equipment needs to be intrinsically safe; if the contact part with the material cannot have the hidden troubles of extrusion or impact and the like, and cannot have hard friction, extrusion and the like; the full-automatic operation can be realized, no humanization in the production process is achieved, and the injury to people caused by accidents is avoided. Thirdly, the volume of the mother liquor collecting cavity is large, and the washed mother liquor flows smoothly to form a certain speed and is not easy to stop. Fourthly, coarse crystal particles in the filter cake are not easy to deposit, and a certain deposition space is provided. Finally, the traditional filter screen structure is flat-bottom type, and filter cake particles are easy to deposit due to the fact that the linear velocity at the center of a blade is small, so that a solid accumulation area is formed at the center of a filter disc; the mother liquor cavity is small, and the bottom of the cavity is of a flat-bottom structure, so that the mother liquor has poor liquidity and small volume, and the stagnation or dead angle of the mother liquor is easily formed to cause crystal precipitation. The above situation is not suitable for the current needs and the technical development, and needs to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an intrinsically safe filtering base for an energetic material, which can effectively avoid the problem of deposition of filter cake particles and finally provide a prerequisite guarantee for the safety and reliability of the filtering and/or washing process of the energetic material.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an intrinsically safe type energetic material is with filtering base which characterized in that: the filter disc and a cylinder cavity of the lower cylinder body jointly enclose to form a mother liquid collecting cavity for accommodating filtrate, and the lower cylinder body is correspondingly provided with a liquid discharge port so as to be communicated with the mother liquid collecting cavity; the filter disc appearance is big-end-up's horn mouth form, and the port that is located filter disc axle center department constitutes the discharge gate that can supply the solid slurry ejection of compact, and this discharge gate intercommunication outside aggregate equipment arranges the ooff valve that can open and close this discharge gate on the discharge gate.
Preferably, the lower cylinder body is a revolving body, and the axial section of the lower cylinder body is W-shaped; flange holes are uniformly distributed at the top cylinder opening and the middle boss of the lower cylinder body, and pull rods are correspondingly arranged at the top edge and the bottom edge of the filter disc; a lifting ring convenient for lifting the filter disc is arranged at the top end of the pull rod, and lead vertically penetrates through the lower cylinder body through the matched flange hole at the bottom end of the pull rod and is fixed by a screw cap; the switch valve is an upward-extending discharge valve, and the valve port of the switch valve is flush with the small port of the filter disc.
Preferably, the bottom surface of the lower cylinder is spherical, and a liquid discharge port communicated with the mother liquor collecting cavity is positioned at the lowest end of the W-shaped lower cylinder.
Preferably, the lower surface of the filter disc is coaxially and downwardly convexly provided with reinforcing rings, and the reinforcing rings are coaxial with each other to form a concentric ring-shaped layout; the reinforcing rings are connected with each other through radial rib plates, so that a latticed reinforcing structure is formed on the bottom surface of the filter disc; a gap for mother liquor to flow is reserved between the reinforcing structure and the bottom surface of the lower cylinder body.
Preferably, the bottom surface of the lower cylinder body is provided with a transverse rib plate and a longitudinal rib plate, so that a latticed fixing structure is formed on the outer bottom surface of the lower cylinder body.
Preferably, the outer cylindrical surface of the filter disc is a conical surface with a large diameter at the top and a small diameter at the bottom, and a matching counter bore with a large diameter at the top of the lower cylinder is correspondingly arranged at the opening of the lower cylinder, so that coaxial insertion matching is formed between the upper counter bore and the lower counter bore.
Preferably, the filter disc comprises a metal sintering net with a multi-layer structure and a filtering precision of 20 microns, which is made of stainless steel 304 or 316L or duplex stainless steel 2205; the inner ring of the metal sintering net is coaxially provided with an inner ring flange so as to form the top edge, and the outer ring of the metal sintering net is coaxially provided with an outer ring flange so as to form the bottom edge.
Preferably, the valve core of the switch valve is sprayed with a plastic material; the joint of the valve rod and the valve body of the switch valve is additionally provided with a plastic guide sleeve.
Preferably, a universal caster which is convenient to move is arranged at the lower barrel.
The invention has the beneficial effects that:
1) through the scheme, the invention provides the filtering base structure, so that the filtering base structure can be adapted to the existing filtering machine or washing machine or filtering and washing dual-purpose machine and the like, and even can be used as an independent accessory to be matched with other energetic material processing equipment, thereby ensuring the safety and efficiency of energetic materials in the processing process.
In practical operation, on one hand, the filter disc and the lower cylinder body form a detachable structure, so that the filter disc and the lower cylinder body are matched to form a mother liquor collecting cavity in working, and the filter disc can be detached at any time during cleaning so as to completely expose all mother liquor contact parts, complete cleaning is realized, and potential safety hazard conditions such as flow short circuit and the like caused by crystal precipitation and accumulation are avoided. On the other hand, for the problem of solid slurry accumulation of the conventional filter disc, the invention not only ensures the convergence effect of the solid slurry to the middle part through the cone-hopper-shaped filter disc structure; meanwhile, the discharge port arranged at the middle part also realizes the timely discharge function of the solid slurry, thereby avoiding the potential hazards of explosion and the like possibly caused by excessive convergence of the solid slurry.
Therefore, potential safety hazards such as deposition risk of coarse crystal particles of filter cakes are avoided, and equipment safety is improved; the invention can effectively avoid the problem of deposition of filter cake particles, and finally provides a prerequisite guarantee for the safe and reliable process of filtration and/or washing of energetic materials.
2) The W-shaped lower cylinder can realize the quick drainage effect of the mother liquor, avoid the long-time stay of the mother liquor in the mother liquor collecting cavity and reduce the possibility of crystal precipitation and accumulation as much as possible. More noteworthy, the cooperation of the filter disc and the lower cylinder body is realized by the flange structures at the inner ring and the outer ring, on one hand, the cooperation positions of the flanges are independent and far away from the mother liquor collecting cavity and the working cavity above the filter disc, compared with the conventional threaded fastener exposed in the working cavity or the mother liquor collecting cavity, the safety is higher, and the conditions of energetic material explosion and the like possibly caused by actions such as threaded fastening and the like are further avoided. On the other hand, the switch valve also adopts a specific upward-expanding discharge valve so as to reduce the influence on explosive solid slurry and even crystallization as much as possible, and the use safety can be obviously improved.
3) The setting of additional strengthening has not only guaranteed the working strength of filter disc self, and this additional strengthening still has the clearance that can supply the mother liquor to flow with the section of thick bamboo bottom surface of lower barrel simultaneously to guarantee that the mother liquor collects the quick flow function of intracavity mother liquor, kill many birds with one stone.
Drawings
FIG. 1 is a schematic view of an assembly structure of the present invention;
FIG. 2 is a schematic cross-sectional structural view of a filter disc;
FIG. 3 is a schematic sectional view of the structure of the lower cylinder;
FIG. 4 is a schematic structural view of the on-off valve;
FIG. 5 is a schematic view of the arrangement of the reinforcing structure;
FIG. 6 is a schematic view of the arrangement of the fixing structure;
FIG. 7 is a longitudinal section velocity vector diagram when the distance from the stirring paddle to the filter disc is 50 mm;
FIG. 8 is a longitudinal section turbulence energy diagram at a paddle-to-filter disc distance of 50 mm.
The actual correspondence between each label and the part name of the invention is as follows:
10-filter disc 11-discharge port 12-switch valve
13-pull rod 14-lifting ring 15-nut 16-reinforcing ring 17-radial rib plate
20-lower cylinder 20 a-top cylinder mouth 20 b-middle crown block
21-liquid discharge port 22-outer ring body 23-transverse rib plate 24-longitudinal rib plate
30-upper cylinder 40-stirring assembly
41-stirring motor 42-stirring shaft 43-stirring paddle
50-spray assembly 51-spray pipe 52-spray ball
60-frame 70-plumb piston cylinder 80-jacket 90-coil pipe
Detailed Description
For the sake of understanding, the following further description is made of the specific application structure and the working manner of the present invention by taking one embodiment of the present invention as an example:
the specific implementation structure of the present invention can be seen in fig. 1-6, and the overall structure thereof includes a cylinder portion, a stirring assembly 40, a spraying assembly 50, a frame 60, etc. Wherein:
the barrel body part is a pressure-bearing container, and the design pressure, the design temperature, the equipment material and the like meet the specific requirements of the energetic material process. The upper cylinder 30 and the lower cylinder 20 form a closed pressure-bearing container through the seam allowance, which is a material working space, namely a filtering washing cavity. Concentrated nitric acid, water or organic solvents such as acetone, ethyl acetate and the like and energetic materials are stirred, mixed, washed and filtered in the material working space. The upper cylinder 30 generally comprises a cylinder straight section, a jacket 80 and/or a coil 90, a seal head, a flange and the like, wherein the seal head is generally provided with a material inlet, a cleaning solution inlet, a pressure gauge port, a safety valve port, an air inlet, an air outlet and the like, which are not described one by one.
In operation, the outer ring 22 of the lower cylinder 20 is pushed by the vertical piston cylinder 70, so that the lower cylinder 20 and the filter disc 10 move downward relative to the upper cylinder 30, thereby exposing the present invention as a whole.
The stirring component 40 stands on the sealing head of the upper cylinder 30, and the output shaft of the stirring component is coaxial with the upper cylinder 30. The stirring assembly 40 generally comprises a stirring motor 41 and a speed reducer, so as to output a rotating speed and a torque within a certain range, and meet the requirements of stirring, mixing and scraping in the slag discharging process in the washing and filtering process. The stirring shaft 42 is also arranged coaxially with the upper cylinder 30 and penetrates out of the upper cylinder 30 through the seal head, and the stirring shaft 42 synchronously receives the rotating speed and the torque output by the stirring motor 41. The bottom end of the stirring shaft 42 is provided with a stirring paddle 43, and the distance from the bottommost surface of the stirring paddle 43 to the upper surface of the circular truncated cone type filter disc 10 is a certain distance, generally more than 50mm, so that hard friction and extrusion between the stirring paddle 43 and a filter cake are avoided.
Referring to fig. 1, a spray assembly 50, specifically including a spray pipe 51 and a spray ball 52 for washing, disposed at the spray pipe 51, is further disposed at the upper cylinder 30. The number and size of the rotary spray balls 52 depend on the diameter and height of the upper cylinder 30. The spraying ball 52 is not suitable for being made of metal, so that potential safety hazards caused by metal friction are avoided; polytetrafluoroethylene or nozzle types may be used. When the device works, a closed cavity formed by the upper surface of the filter disc 10 and the inner surface of the upper cylinder 30 is a region for stirring, mixing, washing and filtering materials and is a working cavity. And designing the effective volume and the slag containing area of the working cavity according to the technological parameters of solid content, liquid content and the like of the energetic material.
Further, as shown in fig. 1-2, the shape of the filter disc 10 is a truncated cone shape, i.e. a funnel shape or a bell mouth shape, the center is the lowest point, and is the discharge port 11 of the solid slurry; the design avoids the potential safety hazard that slurry solids are easy to accumulate due to the minimum central stirring linear velocity of the existing equipment. The filter disc 10 is integral, can be integrally lifted by a lifting ring, and completely exposes all mother liquor contact parts, so that thorough cleaning is realized.
The specific structure of the filter disc 10 is as follows: according to the material process requirements, a plurality of layers of metal sintering nets made of appropriate metal materials and appropriate filtering precision are selected to be manufactured into a circular truncated cone shape, the large end of each metal sintering net is welded with an outer ring flange, and the small end of each metal sintering net is welded with an outer ring flange. For the convenience of hoisting, the outer cylindrical surface of the outer ring flange is provided with a taper which is big-end-up and small-end-down. Meanwhile, the upper surface of the outer ring flange is provided with three lifting rings 14; the lower surfaces of the outer ring flange and the inner ring flange are fixedly provided with pull rods 13 so as to be fixedly connected with matched screw caps 15; flange holes are correspondingly arranged at the top nozzle 20a and the middle crown 20b of the lower cylinder 20 so as to correspond one-to-one with the matched pull rods 13. The pull rod 13 and the nut 15 are completely independent, i.e. do not contact the material, so that the screw thread does not press the material to cause safety accidents, and therefore possible safety risks are avoided. During actual assembly, the corresponding part matching position needs to be provided with a seal. In order to ensure the strength, a reinforcing ring can be arranged at the flange of the inner ring according to the pressure requirement.
The lower cylinder 20 forms a mother liquor collecting chamber in cooperation with the filter disc 10. Under the action of pressure, the mother liquor in the material permeates through the multi-layer metal sintering mesh of the filter disc 10 and is collected in the mother liquor collecting cavity. Because of the mother liquor collection cavity volume is great, the great slope that barrel 20 self "W" form design produced under the cooperation, consequently the mother liquor is difficult for the stagnation, and mother liquor mobility is better, has solved the poor crystal of causing of mother liquor mobility that flat bed formula structure leads to and has precipitated the difficult problem. And when the filter disc 10 is integrally lifted, the mother liquor collecting cavity is completely exposed, manual regular intervention can be performed, the mother liquor collecting cavity is thoroughly cleaned, and flowing short circuit caused by crystal precipitation and accumulation is avoided.
In order to solve the problem of the supporting strength of the metal sintering net, as shown in fig. 5-6, a series of spoke rib plates can be arranged in the mother liquor collecting cavity, and the number, the wall thickness and the like of the spoke rib plates are related to the diameter, the pressure and the like of the lower cylinder body 20. Specifically, referring to fig. 5, a reinforcing ring 16 and a radial rib plate 17 are arranged on the bottom surface of the filter disc 10, so as to form a reinforcing structure; meanwhile, the reinforcing structure is not in contact with the inner bottom surface of the lower barrel 20 and has a certain distance, which is a mother liquor flowing channel. Through the design, the reinforcing structure presents the square grid shape of a certain size, the metal sintering net is well supported, and the metal sintering net is prevented from being deformed greatly and being damaged by pressure under the action of pressure. In fig. 6, a transverse rib 23 and a longitudinal rib 24 are arranged on the outer bottom surface of the lower cylinder 20, so as to form a well-lattice type fixing structure, so as to further reinforce the lower cylinder 20.
Further, in order to ensure the smooth flowing of the mother liquor, the lowest position of the mother liquor collecting cavity is provided with a series of mother liquor outlets, namely liquor discharging ports 21, and the number, the diameter and the like of the serial mother liquor outlets are related to the diameter, the material characteristics and the like of the lower barrel 20.
In actual assembly, the on-off valve 12 shown in fig. 3 needs to be installed at the inner ring flange of the filter disc 10 and abutted with the discharge port 11 for discharging the solid slurry. The switch valve 12 is generally an upward-extending discharge valve, and in order to prevent hard friction to energetic materials, a valve core of the switch valve 12 needs to be sprayed with a plastic material, such as F40 or F30; the plastic guide sleeve is needed to be added at the joint of the valve rod and the valve body, the plastic guide sleeve is generally made of polytetrafluoroethylene, and the situation that materials are brought into the valve body by the valve rod and safety accidents are caused by extrusion is avoided.
In fig. 7-8, a longitudinal section velocity vector diagram and a longitudinal section turbulence energy diagram are disclosed for a distance of 50mm from the paddle 43 to the disc 10. In actual operation, the following results are found: the height of the stirring paddle 43 is increased, the change of the fluid flowing state in the cylinder body part is not large, and the fluid at the bottom of the paddle flows, but the effect is not obvious; when the distance from the stirring paddle 43 to the filter disc 10 is increased, the low-turbulence kinetic energy area at the center of the bottom of the paddle is obviously enlarged; this shows that, the increase of the height of the stirring paddle can cause a certain adverse effect on the stirring effect of the materials at the bottom of the tank; the study found that the optimal distance is 50mm when the device is used specifically.
It will, of course, be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (9)
1. The utility model provides an intrinsically safe type energetic material filters base which characterized in that: the filter disc comprises a lower cylinder body (20) and a filter disc (10) which is detachably assembled at a cylinder opening at the top of the lower cylinder body (20), wherein the filter disc (10) and a cylinder cavity of the lower cylinder body (20) jointly enclose a mother liquid collecting cavity for accommodating filtrate, and a liquid discharge port (21) is correspondingly arranged at the lower cylinder body (20) so as to be communicated with the mother liquid collecting cavity; the filter disc (10) appearance is the bore big-end-up's horn mouth form, and is located the port of filter disc (10) axle center department and constitutes discharge gate (11) that can supply the solid slurry ejection of compact, and this discharge gate (11) intercommunication outside aggregate equipment arranges ooff valve (12) that can open and close this discharge gate (11) on discharge gate (11).
2. The filtration base of claim 1, wherein the filtration base comprises: the lower cylinder (20) is a revolving body, and the axial section of the lower cylinder is W-shaped; flange holes are uniformly distributed at the top barrel mouth (20a) and the middle crown (20b) of the lower barrel (20), and pull rods (13) are correspondingly arranged at the top edge and the bottom edge of the filter disc (10); a lifting ring (14) convenient for lifting the filter disc (10) is arranged at the top end of the pull rod (13), and lead vertically penetrates through the lower cylinder body (20) through a matched flange hole at the bottom end of the pull rod (13) and is fixed by a screw cap (15); the switch valve (12) is an upward-spreading type discharge valve, and the valve port of the switch valve (12) is flush with the small port of the filter disc (10).
3. The filtration base of claim 2, wherein the filtration base comprises: the bottom surface of the lower cylinder body (20) is spherical, and a liquid discharge port (21) communicated with the mother liquid collecting cavity is positioned at the lowest end of the W-shaped lower cylinder body (20).
4. The filter base of claim 1, 2 or 3 for intrinsically safe energetic materials, further comprising: the lower surface of the filter disc (10) is coaxially and downwards convexly provided with reinforcing rings (16), and the reinforcing rings (16) are coaxial with each other to form a concentric annular layout; the reinforcing rings (16) are connected with each other through radial rib plates (17), so that a grid-shaped reinforcing structure is formed on the bottom surface of the filter disc (10); a gap for mother liquor to flow is reserved between the reinforcing structure and the bottom surface of the lower cylinder body (20).
5. The filtration base of claim 4, wherein the filtration base comprises: the bottom surface of the lower cylinder body (20) is provided with a transverse rib plate (23) and a longitudinal rib plate (24), so that a latticed fixing structure is formed on the outer bottom surface of the lower cylinder body (20).
6. The filtration base of claim 2 or 3 for intrinsically safe energetic materials, further comprising: the outer cylindrical surface of the filter disc (10) is a conical surface with a large diameter at the top and a small diameter at the bottom, and matching counter bores with a large diameter at the top and a small diameter at the bottom are correspondingly arranged at the top cylinder opening (20a) and form coaxial splicing matching between the two.
7. The filtration base of claim 2 or 3, wherein the filtration base comprises: the filter disc (10) comprises a metal sintering net which is made of stainless steel 304 or 316L or duplex stainless steel 2205 and has a multi-layer structure with the filtering precision of 20 mu m; the inner ring of the metal sintering net is coaxially provided with an inner ring flange so as to form the top edge, and the outer ring of the metal sintering net is coaxially provided with an outer ring flange so as to form the bottom edge.
8. The filter base of claim 1, 2 or 3 for intrinsically safe energetic materials, further comprising: a valve core of the switch valve (12) is sprayed with a plastic material; a plastic guide sleeve is additionally arranged at the joint of a valve rod and a valve body of the switch valve (12).
9. The filter base of claim 1, 2 or 3 for intrinsically safe energetic materials, further comprising: the universal caster which is convenient to move is arranged at the lower cylinder body (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210079126.7A CN114602222A (en) | 2022-01-24 | 2022-01-24 | Intrinsic safety type filtering base for energetic material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210079126.7A CN114602222A (en) | 2022-01-24 | 2022-01-24 | Intrinsic safety type filtering base for energetic material |
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| Publication Number | Publication Date |
|---|---|
| CN114602222A true CN114602222A (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210079126.7A Pending CN114602222A (en) | 2022-01-24 | 2022-01-24 | Intrinsic safety type filtering base for energetic material |
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| CN (1) | CN114602222A (en) |
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