A propellant charging device integrating mixing and pouring

Abstract

The present invention discloses a propellant charging device integrating mixing and pouring, including a mixer, a mixing pot, a pouring tank, a plurality of combustion chambers to be charged placed in the pouring tank, and a material guide unit between a discharge port at the lower end of the mixing pot and a feed port of the combustion chamber, and also includes: a pressure cover, which is detachably arranged at the upper end of the mixing pot; a pressure head is arranged at the upper end of the pressure cover; and a pressure plate, which is slidably arranged inside the mixing pot. The present invention uses a mixing pot to replace the primary and secondary pouring hoppers, and adopts a special pressure plate to push the injection of non-Newtonian fluid slurry in the mixing pot, so that the slurry is discharged from the bottom of the mixing pot through a special discharge valve, and flows into the fully enclosed engine combustion chamber through a distributor and a plurality of distributor pipes, and the slurry that is about to be filled is damped and adjusted through a differential pressure valve, which has strong functionality, thereby realizing the process technology of remotely operating the injection and pouring of the engine combustion chamber powder column.

Description

Technical Field

[0001] The invention relates to the field of solid rocket engine manufacturing, in particular to a propellant charging device integrating mixing and pouring. Background Art

[0002] Solid propellant is widely used as a power source for engines at home and abroad. The combustion chamber of an aircraft engine is loaded with propellants according to the process mode of weighing → premixing → mixing → pouring → curing. This loading mode is applicable not only to free-loading propellants but also to wall-cast propellants. As the demand for engines increases, the production capacity of manufacturers also increases, presenting many new propellant loading processes and new equipment developed for the new loading processes.

[0003] In the current propellant charging device, the engine combustion chamber charging is usually carried out in different processes and steps. Specifically, the engine combustion chamber is installed in a vacuum container (pouring pot), so that the combustion chamber is completely in a vacuum environment in the pouring pot, and then a mixer is used to mix the slurry in the mixing pot, and then poured into the primary pouring hopper through the pot turning device, and then flows through the flower plate of the secondary hopper, so that the gas entrained in the slurry can be completely removed under the vacuum environment, and then the mixed slurry in the secondary hopper flows into the combustion chamber through the material guide unit connected at the lower end, and the charging is completed. In this scheme, there are problems such as low efficiency, the slurry is easily entrained with gas when turning the pot and pouring, and bubbles and cavities are easily generated when pouring the combustion chamber powder column, and the primary and secondary hoppers occupy the pit space and the investment is large. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems or defects and provide advantages to be described later. In order to achieve these purposes and advantages according to the present invention, a propellant charging device integrating mixing and pouring is provided, comprising a mixer, a mixing pot, a pouring pot, a plurality of combustion chambers to be charged placed in the pouring pot, and a material guide unit between the discharge port at the lower end of the mixing pot and the inlet port of the combustion chamber, characterized in that it also includes:

[0005] A pressure cover is detachably arranged on the upper end of the mixing pot; a pressure head is arranged on the upper end of the pressure cover;

[0006] A material pressing plate is slidably arranged inside the mixing pot.

[0007] Among them, preferably, inwardly extending card plates are integrally provided on both sides of the pressure cover; outwardly extending baffle plates are integrally provided on both sides of the mixing pot port; the two baffle plates are matched and overlapped with the two card plates respectively, so as to realize a detachable connection; a first sealing ring is embedded between the pressure cover and the mixing pot port; a pressure relief head and a spare head are provided at the upper end of the pressure cover; and a first glass observation window is provided on the pressure cover.

[0008] Among them, preferably, three lifting rings are arranged in a triangular distribution on the upper end of the pressing plate; the distance between the pressing plate and the inner wall of the mixing pot is 4 to 6 mm; a plurality of circles of polytetrafluoro tapered support blocks are arranged on the bottom surface of the pressing plate, and bosses are arranged in a triangular distribution on the side of the pressing plate.

[0009] Wherein, preferably, the material guiding unit comprises a material discharge valve; the material discharge valve comprises:

[0010] The main pipe on the left side of the H-shaped pipe is connected upward to the mixing pot discharge port; the branch pipe port on the right side of the H-shaped pipe is downward as the discharge port; the main pipe of the H-shaped pipe is retractably provided with a blocking rod that can block one of the upper and lower ports;

[0011] The front end of the blocking rod is provided with a double-headed cone; the rear end of the blocking rod is connected to the output shaft of the telescopic cylinder;

[0012] The main pipe of the H-shaped pipe is a two-section structure; the inner sides of the two ports of the upper section of the main pipe of the H-shaped pipe are respectively provided with reverse cone surfaces that match and seal with the double-headed cone; the body of the telescopic cylinder is fixedly arranged at the bottom of the lower section of the main pipe of the H-shaped pipe;

[0013] A second sealing ring is embedded around the middle of the cone surface at both ends of the double-headed cone;

[0014] The output shaft of the telescopic cylinder is passed through the inner cavity of the lower section of the main tube of the H-shaped tube, and a sealing disk is integrally connected to the end; the upper end of the sealing disk is fixedly connected to the bottom of the blocking rod; the size of the sealing disk matches the size of the inner cavity of the lower section of the main tube of the H-shaped tube to achieve a sealed fit.

[0015] Preferably, a hose valve is connected to the outlet of the right branch of the H-shaped tube.

[0016] Preferably, the method further comprises a distributor; the distributor comprises:

[0017] The upper end of the collecting barrel is connected to the discharge port of the hose valve; a plurality of distribution pipes are evenly arranged around the lower end of the collecting barrel; the discharge port of each distribution pipe is connected to the inlet of the combustion chamber;

[0018] The outlet of the hose valve is connected to a connecting pipe; the lower flange plate of the connecting pipe is flange-jointed with the upper flange plate of the pouring tank; an annular groove is arranged on the upper flange plate of the pouring tank; the upper end of the collecting barrel is open, and an outer edge plate matching the annular groove is arranged integrally around it;

[0019] Two limit blocks are arranged on the annular groove; two limit grooves matching the two limit blocks are arranged on the outer edge plate; the two limit blocks are embedded in the two limit grooves; a fourth sealing ring is arranged on the upper flange plate of the pouring tank;

[0020] The top cover of the aggregate barrel is connected with three pneumatic joints;

[0021] The lower end of the collecting barrel is provided with a short conical surface; the upper end of each of the distribution pipes is connected to the short conical surface;

[0022] The plurality of material distribution pipes are specifically six; the upper ends of the six material distribution pipes are arranged on the short cone surface at six equal angles; the six material distribution pipes are arranged to be tilted downward at 45 degrees in space;

[0023] The lower ends of the plurality of material distribution pipes are respectively provided with two branch pipes; each of the branch pipes is connected and butted to the combustion chamber inlet in a sealed manner;

[0024] A short arc tube for docking with the inlet of the combustion chamber is arranged at the end of each branch pipe.

[0025] Preferably, a differential pressure valve is also included; the differential pressure valve includes:

[0026] A positioning plate is detachably arranged at the upper port of the combustion chamber; the bottom plate of the positioning plate is concave and a round hole is arranged in the middle; a circle of large holes is arranged around the bottom plate of the positioning plate;

[0027] The middle part of the upper end of the pressure plate is connected and connected with the short arc tube; the lower end of the pressure plate is provided with a round tube inserted into the inner wall of the round hole; the pressure plate is surrounded by a circle of small holes;

[0028] The bottom plate of the positioning plate is tightly fitted to the end surface of the upper port of the combustion chamber, and is penetrated and fixed with a plurality of fixing bolts, thereby forming a detachable connection.

[0029] A lower docking ring is integrally provided on the outer side of the positioning plate; an upper docking ring matching the lower docking ring is integrally provided on the outer side of the pressure plate; a sealing groove is provided on the annular outer edge of the positioning plate; a third sealing ring is embedded in the sealing groove; the upper docking ring and the lower docking ring are matched and fitted together and then fixed with a plurality of fixing bolts, thereby realizing a detachable connection;

[0030] A short inlet tube coaxial with the round tube is integrally protruded from the middle of the upper end of the pressure plate; the end faces of the short inlet tube and the short arc tube are abutted against each other and then locked on the outside with a clamp to achieve communication;

[0031] A raised receiving ring is disposed on the upper end of the pressure plate; the radius of the receiving ring is larger than a circle of small holes;

[0032] It also includes a leakage plate; the leakage plate is fixedly clamped and arranged between the positioning plate and the upper port of the combustion chamber; the leakage plate is provided with a circle of inner leakage openings with a smaller inner diameter and a circle of outer leakage openings with a larger inner diameter; the inner leakage openings are composed of three annularly distributed thick arc leakage holes; the outer leakage openings are composed of three annularly distributed thin arc leakage holes; the size of the inner leakage openings matches the round tube; the size of the outer leakage openings matches the circle of small holes;

[0033] The lower end of the base of the positioning plate is provided with an annular groove matching the leakage plate; the lower end of the outer ring of the leakage plate abuts against the upper port of the combustion chamber; the upper end of the outer ring of the leakage plate is embedded in the annular groove to form a limit position;

[0034] The drain pan is detachably provided with a core mold for diversion in the middle; an assembly hole is provided in the middle of the drain pan; the lower end of the core mold is a column matching the assembly hole; the upper end of the core mold is a cone with a bottom radius larger than the column; the cone of the core mold is coaxially corresponding to the feed short tube; after the column is inserted into the assembly hole, the edge of the bottom of the cone abuts against the upper end of the assembly hole for abutment and limiting, thereby realizing a detachable connection;

[0035] A plurality of second glass observation windows are arranged around the pouring tank.

[0036] Among them, preferably, it also includes a support frame; the support frame includes four support columns distributed in a square; the lower ends of the four support columns are respectively fixedly connected to the bottom plate of the pouring tank; the upper ends of the four support columns are jointly fixedly connected to a support plate; the upper ends of the four support columns respectively pass through the support plate to form support heads; a limit plate is slidably arranged on the support frame; the four corners of the limit plate correspond to the four support heads; a limit hole is arranged in the middle of the limit plate; a plurality of the combustion chambers are gathered and arranged in a ring shape, and are embedded in the limit holes; a power mechanism is arranged at the lower end of the support plate; four electric screws are fixedly penetrated in the middle of the four sides of the support plate; the outer shells of the four electric screws are fixedly penetrated in the middle of the four sides of the support plate; the output shafts of the four electric screws are extended upward and fixedly connected to the middle of the four sides of the limit plate; the power ends of the four electric screws are respectively connected to the output ends of the power mechanism, thereby realizing the up and down sliding connection of the entire limit plate.

[0037] The present invention has at least the following beneficial effects:

[0038] By directly using the mixing pot body in conjunction with the pressure cover and the pressing plate, the functions of the original mixing equipment (mixing pot) and the original pouring equipment (primary and secondary pouring hoppers) can be combined into one, and there is no need to overturn the pot and pour the materials, which significantly improves the charging efficiency, makes the slurry less likely to be entrained with air, and the poured combustion chamber powder column is less likely to produce bubbles and voids, and has better quality. At the same time, since there is no need to configure the primary and secondary hoppers, it greatly saves space, reduces investment, and saves considerable economic costs, that is, it realizes the "integration of mixing and pouring" specified in the patent title.

[0039] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is the overall structural diagram of the present invention;

[0041] Figure 2 It is a cross-sectional structural diagram of a mixing pot of the present invention;

[0042] Figure 3 It is a structural diagram of the upper end surface of the pressing plate of the present invention;

[0043] Figure 4 It is a structural diagram of the lower end surface of the pressing plate of the present invention;

[0044] Figure 5 It is a cross-sectional structural diagram of the feed valve (h-type tube) of the present invention;

[0045] Figure 6 It is a structural diagram of the relevant connection equipment at the lower end of the mixing pot of the present invention;

[0046] Figure 7 It is a structural diagram of the distributor (with closed upper end) of the present invention;

[0047] Figure 8 It is a structural diagram of the upper flange plate on the pouring tank port of the present invention;

[0048] Fig. 9 It is a cross-sectional structural diagram of the distributor of the present invention;

[0049] Fig.10 It is a structural diagram of the material distributor (the upper end is exposed) of the present invention;

[0050] Fig.11 It is a cross-sectional structural diagram of the differential pressure valve of the present invention;

[0051] Fig.12 This is a front structural diagram of the pressure plate of the present invention;

[0052] Fig.13 This is a structural diagram of the back side of the pressure plate of the present invention;

[0053] Fig.14 This is a front structural diagram of the positioning plate of the present invention;

[0054] Fig.15 This is a structural diagram of the back side of the positioning plate of the present invention (with the leakage ring installed);

[0055] Fig.16 This is a structural diagram of the back side of the positioning disk of the present invention (with the leakage ring removed);

[0056] Fig.17 It is a structural diagram of the leakage plate (with the upper core mold assembled) of the present invention;

[0057] Fig.18 This is a structural diagram of the drain plate of the present invention (with the core mold removed);

[0058] Fig.19 It is a structural diagram of the support frame of the present invention. DETAILED DESCRIPTION

[0059] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description. It should be understood that the terms "having", "including" and "comprising" used herein do not exclude the existence or addition of one or more elements or their combinations.

[0060] Figure 1-10 The present invention shows a propellant charging device integrating mixing and pouring, comprising a mixer, a mixing pot 7, a pouring pot 8, a plurality of combustion chambers 9 to be charged placed in the pouring pot 8, and a material guide unit between the discharge port at the lower end of the mixing pot 7 and the inlet port of the combustion chamber 9, characterized in that it also includes:

[0061] A pressure cover 1 is detachably arranged on the upper end of the mixing pot 7; a pressure head 11 is arranged on the upper end of the pressure cover 1;

[0062] The pressing plate 2 is slidably arranged inside the mixing pot 7.

[0063] Working principle: In this design, various slurry raw materials are weighed according to the actual charging amount, and then all of them are put into the mixing pot 7, and the external mixer is started to mix the slurry raw materials in the mixing pot 7 to obtain slurry with high viscosity non-Newtonian fluid properties, and then the mixing pot 7 is removed from the mixer, and the pressing plate 2 is placed in the mixing pot 7, so that the bottom of the pressing plate 2 is close to the surface of the slurry, and the pressure cover 1 is snapped onto the upper port of the mixing pot 7 to seal it, and an external pressure device is used to connect to the multiple pressure heads 11 on the pressure cover 1 to pressurize, so that the pressure plate 2 presses the slurry at the lower end, so that the slurry is pushed out from the discharge port at the lower end of the mixing pot 7, and then introduced into the inner cavity 92 of multiple combustion chambers 9 through the subsequent material guide unit to complete the charging; at the same time, the inner cavity of the pouring tank 8 is also vacuumed and pressurized by an external vacuum device, and kept warm; thus, through this push and suck, the combustion chamber 9 is stably charged.

[0064] Its main advantage is that by directly utilizing the mixing pot 7 body in conjunction with the pressure cover 1 and the pressure plate 2, the functions of the original mixing equipment (mixing pot) and the original pouring equipment (primary and secondary pouring hoppers) can be combined into one, and there is no need to overturn the pot and pour the materials, which significantly improves the charging efficiency, makes the slurry less likely to be air-entrained, and the poured combustion chamber powder column is less likely to produce bubbles and voids, and has better quality. At the same time, since there is no need to configure primary and secondary hoppers, it greatly saves space, reduces investment, and saves considerable economic costs, that is, realizes the "integration of mixing and pouring" specified in the patent title.

[0065] In the above technical solution, inwardly extending card plates 12 are integrally provided on both sides of the pressure cover 1; outwardly extending baffle plates 71 are integrally provided on both sides of the port of the mixing pot 7; the two baffle plates 71 are matched and overlapped with the two card plates 12 respectively, so as to realize a detachable connection; a circle of first sealing ring 13 is embedded between the pressure cover 1 and the port of the mixing pot 7; a pressure relief head 14 and a spare head 15 are provided on the upper end of the pressure cover 1; and a first glass observation window 16 is provided on the pressure cover 1.

[0066] Working principle: In this design, the pressure cover 1 is not connected to the port of the mixing pot 7 by ordinary bolts, but by first snapping the pressure cover 1 onto the outside of the port of the mixing pot 7 (similar to the locking method of the lid of a pressure cooker), and then rotating the entire pressure cover 1 circumferentially to rotate the two clamping plates 12 to the lower ends of the two baffles 71, forming a stable upper and lower clamping abutment state, thereby achieving the closure of the port of the mixing pot. Its further advantage is that the pressure cover 1 can be quickly locked with the mixing pot 7 without the need to use multiple bolts for assembly, which significantly improves the assembly efficiency and reduces the labor intensity. At the same time, it can also ensure the sealing of the entire device. The sealing can be further improved by setting a circle of first sealing rings 13. The pressure relief head 14 and the spare head 15 are used as quick pneumatic joints for pressure relief and standby, which further improve the functionality of the pressure cover. The first glass observation window 16 allows the operator to observe the material guiding situation inside the entire mixing pot 7 in time.

[0067] In the above technical solution, three lifting rings 21 are arranged in a triangular distribution on the upper end of the pressing plate 2; the distance between the pressing plate 2 and the inner wall of the mixing pot 7 is 4 to 6 mm; a plurality of circles of polytetrafluoroethylene tapered support blocks 22 are arranged on the bottom surface of the pressing plate 2; and bosses 23 are arranged in a triangular distribution on the side of the pressing plate 2.

[0068] Working principle: In this design, one of its further advantages is that the three hoisting rings 21 arranged on the upper end of the pressing plate 2 can make the pressing plate 2 more convenient to hoist and improve the assembly efficiency. The multiple polytetrafluoroethylene tapered support blocks 22 are in direct contact with the medicine surface, so it is safer to use such components to push and press the medicine slurry (polytetrafluoroethylene and the medicine slurry will not react, and the material properties are more stable under high-pressure close contact); at the same time, the multiple polytetrafluoroethylene tapered support blocks 22 can allow the pressing plate 2 to withstand a push pressure of ≤0.4MPa from above and a vacuum suction pressure of ≤1.07KPa from below, and keep the pressure plate 2 from deforming, so as to continuously and stably apply pressure and push the medicine surface;

[0069] At the same time, its further advantage is that after the pressing plate 2 is continuously pressed down and all the slurry is completely pressed out from the inside of the mixing pot 7, due to the presence of multiple polytetrafluoroethylene tapered support blocks 22, the entire pressing plate 1 will not be completely attached to the bottom surface of the mixing pot 7 (because if the pressing plate 2 is attached to the bottom surface of the mixing pot 7, some high-viscosity slurry will inevitably be pressed tightly to the bottom of the mixing pot 7, causing this part of the slurry to be unable to be smoothly discharged, resulting in residue, and the cost of the slurry is high. If all the slurry cannot be completely filled into the target combustion chamber 9, it is inevitable that Economic losses will inevitably occur), but instead a plurality of polytetrafluoroethylene tapered support blocks 22 are used to support the bottom of the pressing plate 2, so that the pressing plate 2 no longer exerts pressure on the slurry, and a spacing space is formed between the lower end of the pressing plate 2 and the bottom surface of the mixing pot 7, i.e., a passage for the slurry. At this time, the slurry is pushed by the pressure on the gap (4-6 mm) between the pressing plate 2 and the inner wall of the mixing pot 7, as well as the vacuum suction force in the subsequent material guiding unit, to generate flow, and can continue to be discharged until the remaining slurry in the mixing pot 7 is completely used up, thereby greatly reducing the residual amount of medicine in the mixing pot 7.

[0070] At the same time, its third further advantage is that the three bosses 23 can ensure that when the entire pressing plate 2 slides downward in the inner cavity of the mixing pot 7, it plays a certain straightening role, ensuring that the pressing plate can fit the surface of the slurry more stably and evenly, and the pressure effect is better. At the same time, it can ensure that there is a gap greater than 4mm between the pressing plate 2 and the inner wall of the mixing pot 7, further ensuring that the sliding of the pressing plate 2 is uniform.

[0071] In the above technical solution, the material guiding unit includes a material discharge valve; the material discharge valve includes:

[0072] The main pipe 31 on the left side of the H-shaped pipe 3 is connected upward to the discharge port of the mixing pot 7; the branch pipe 32 on the right side of the H-shaped pipe 3 is downward as the discharge port and is connected to the inlet of the combustion chamber 9; the main pipe 31 of the H-shaped pipe 3 is telescopically provided with a blocking rod 33 that can block one of the upper and lower ports;

[0073] The front end of the blocking rod 33 is provided with a double-headed cone 34; the rear end of the blocking rod 33 is connected to the output shaft 351 of the telescopic cylinder 35;

[0074] The main pipe 31 of the H-shaped pipe 3 is a two-section structure; the inner sides of the two ports of the upper section 311 of the main pipe of the H-shaped pipe 3 are respectively provided with reverse cone surfaces 313 for matching and blocking the double-headed cone 34; the body of the telescopic cylinder 35 is fixedly arranged at the bottom of the lower section 312 of the main pipe of the H-shaped pipe;

[0075] A second sealing ring 341 is embedded around the middle of the cone surface at both ends of the double-headed cone 34;

[0076] The output shaft 351 of the telescopic cylinder 35 is passed through the inner cavity of the lower section 312 of the main tube of the H-shaped tube, and a sealing disk 36 is integrally connected to the end; the upper end of the sealing disk 36 is fixedly connected to the bottom of the blocking rod 33; the size of the sealing disk 36 matches the size of the inner cavity of the lower section 312 of the main tube of the H-shaped tube to achieve a sealed fit.

[0077] Working principle:

[0078] (1) In this design, the material discharge valve can be connected to the bottom of the mixing pot 7, so as to achieve the function of stable material discharge and guiding. When the material guiding starts, the output shaft 351 of the telescopic cylinder 35 is retracted, which can drive the entire blocking rod 33 and the double-headed cone 34 to move downward. At this time, the lower end of the double-headed cone 34 just abuts against the lower end of the inner cavity of the H-shaped tube 3, so as to achieve the conduction of the material discharge port of the mixing pot 7; and after the material guiding of the mixing pot 7 is completed, the output shaft 351 of the telescopic cylinder 35 is extended, which drives the entire blocking rod 33 and the double-headed cone 34 to move upward. At this time, the upper end of the double-headed cone 34 just fits and abuts against the upper end of the inner cavity of the H-shaped tube 3, so as to achieve the closure of the material discharge port of the mixing pot 7;

[0079] Its main advantages are: the blocking rod 33 can achieve two-end blocking in the inner cavity of the main pipe 31 of the H-shaped tube 3 by controlling the extension and contraction, so that under the condition of vacuum suction and pressure, after the slurry flows out from the lower end of the mixing pot 7, it can be smoothly and stably guided out from the branch pipe 31 of the H-shaped tube 3, which is easy to control, has good sealing effect, simple structure, and is easy to connect with subsequent material guiding pipes.

[0080] (2) A further advantage is that the double-headed cone 34 has two opposite cone surfaces, one above and one below, and can block both ends of the left main pipe 31 of the H-shaped pipe 3 with one component, which has strong applicability and simple configuration;

[0081] (3) A further advantage is that the double-headed vertebra 34 can abut against the two reverse cone surfaces 313 more closely when being pushed up and pulled down, thereby further improving the sealing performance of the double-headed vertebra.

[0082] (3) A further advantage is that the two sealing rings 341 can further improve the sealing of the entire inner cavity of the pipeline when the double-headed cone 34 is fitted and sealed with the surface of the reverse cone 312, thereby preventing leakage of the drug slurry.

[0083] (4) A further advantage is that after the double-headed vertebra 34 is pushed up, the entire sealing disc 36 can be just snapped onto the upper end of the lower section 312 of the main pipe of the H-shaped pipe, forming a buffering and abutting effect, while providing good sealing.

[0084] In the above technical solution, the outlet of the right branch pipe 32 of the H-shaped pipe 3 is connected to a hose valve 101;

[0085] Working principle: In this design, its further advantage is that the hose valve 101 ensures that the slurry (non-Newtonian fluid) can pass stably and be introduced into the subsequent material guiding unit. The vacuum valve serves as the dividing point of the vacuum environment in the entire device. When the mixing pot 7 has not been filled, the hose valve 101 is controlled to be closed, and the lower end of the hose valve 101 is evacuated; and when the mixing pot 7 has been filled, the hose valve 101 is controlled to be opened. At this time, the slurry is introduced and the vacuum is continued to be isolated. When the slurry surface completely drops to the lower end of the hose valve 101, the vacuum can no longer be isolated. At this time, all the residual material in the material guiding unit will be sucked into the multiple combustion chambers 9 of the pouring tank 8 to ensure that there is as little residual material as possible in the device, thereby improving the utilization rate of the slurry.

[0086] In the above technical solution, a material distributor is also included; the material distributor includes:

[0087] The upper end of the collecting barrel 4 is connected to the discharge port of the hose valve 101; a plurality of distribution pipes 41 are evenly arranged around the lower end of the collecting barrel 4; the discharge port of each distribution pipe 41 is connected to the inlet of the combustion chamber 9;

[0088] The outlet of the hose valve 101 is connected to a connecting pipe 102; the lower flange plate 103 of the connecting pipe 102 is flange-jointed with the upper flange plate 82 of the pouring tank 8; the upper flange plate 82 of the pouring tank 8 is provided with an annular groove 821; the upper end of the collecting barrel 4 is open, and an outer edge plate 42 matching the annular groove 821 is integrally provided around it;

[0089] Two limit blocks 822 are arranged on the annular groove 821; two limit grooves 421 matching the two limit blocks 822 are arranged on the outer edge plate 42; the two limit blocks 822 are embedded in the two limit grooves 421; a fourth sealing ring 823 is arranged on the upper flange plate 82 of the pouring tank 8;

[0090] Three pneumatic joints 43 are connected and arranged on the top cover of the collecting barrel 4;

[0091] The lower end of the collecting barrel 4 is provided with a short conical surface 44; the upper end of each of the distribution pipes 41 is connected to the short conical surface 44;

[0092] The plurality of material distribution pipes 41 are specifically six; the upper ends of the six material distribution pipes 41 are arranged on the short cone surface 44 at six equal angles; the six material distribution pipes 41 are arranged to be tilted downward by 45 degrees in space;

[0093] The lower ends of the plurality of material distribution pipes 41 are respectively provided with two branch pipes 411; each of the branch pipes 411 is connected and connected to the inlet of the combustion chamber 9 in a sealed manner;

[0094] A short arc tube 45 is provided at the end of each branch pipe 411 for docking with the inlet of the combustion chamber 9.

[0095] Working principle:

[0096] (1) In this design, the main advantage is that the slurry discharged from the hose valve 101 will first be introduced into the collecting barrel 4 for aggregation, and then connected to the inlet of each combustion chamber 9 through multiple distribution pipes 41, thereby realizing uniform and stable charging of multiple combustion chambers 9 at the same time;

[0097] (2) In this design, the outer edge plate 42 is pressed against the annular groove 821, and the lower flange plate 103 of the connecting pipe 102 is clamped with the upper flange plate 82 of the pouring tank 8 to achieve fixation, so that the entire aggregate barrel 4 is fixed more stably;

[0098] (3) In this design, the stability of the outer edge plate 42 after connection can be further improved, and the sealing performance can be improved.

[0099] (4) In this design, a further advantage is that the outer edge plate 42 arranged in an annular manner at the upper end of the aggregate barrel 4 can better seal and dock with the upper end of the pouring tank 8, thereby improving the sealing performance.

[0100] (5) In this arrangement, a further advantage is that the three pneumatic joints 43 respectively have the functions of evacuating, venting, or keeping the pouring tank 8 in standby mode, etc., and are rich in functions and highly applicable.

[0101] (6) In this design, a further advantage is that the feed inlet of each feed pipe 41 is connected to the short conical surface 44, so that when the slurry in the collecting barrel 4 is drawn into the multiple feed pipes 41, a certain slope can be maintained, so that the extraction and discharge of the slurry is more uniform and stable, and the material guiding efficiency is higher;

[0102] (7) In this design, a further advantage is that the six feed pipes 41 are arranged in a reasonable number and form a surround, which can maintain a more stable discharge efficiency under a certain vacuum extraction pressure; at the same time, each discharge pipe 41 is tilted at a forty-five degree angle, so that the multiple feed pipes 41 completely form a cone in space, so that the rate of the slurry discharged from the collecting barrel to each feed pipe 41 is the same, thereby achieving a synchronized and more uniform rate of charging the combustion chamber 9, ensuring that the slurry in multiple combustion chambers 9 can be filled at the same time, and preventing uneven situations such as more or less, faster or slower when multiple combustion chambers 9 are connected for charging.

[0103] (8) In this design, the two branch pipes 411 can expand the amount of charge in a single feed pipe 41, thereby doubling the charge efficiency. The two branch pipes 411 of the same length can continue to ensure that the length and spatial position between the feed inlet of each feed pipe 41 and the feed outlet of the branch pipe 411 are completely consistent, thereby continuing to maintain the uniformity of charge in each combustion chamber 9.

[0104] (9) In this design, when the slurry is discharged, the outlet of the branch pipe 411 can be evenly and stably closed and docked with the inlet of the combustion chamber through a short arc tube 45, ensuring a smooth transition of the slurry when it is introduced into the combustion chamber 9.

[0105] In the above technical solution, a differential pressure valve is also included; the differential pressure valve includes:

[0106] The positioning plate 51 is detachably disposed on the upper port 91 of the combustion chamber 9; the bottom plate 511 of the positioning plate 51 is concave and has a round hole 510 in the middle; the bottom plate 511 of the positioning plate 51 is surrounded by a circle of large holes 512;

[0107] The pressure plate 52 has a middle portion of its upper end connected to the short arc tube 45; a circular tube 521 is provided at the lower end of the pressure plate 52 to fit into the inner wall of the circular hole 510 (thereby forming a closed annular space); a circle of small holes 522 is provided around the pressure plate 52;

[0108] In the above technical solution, the base plate 511 of the positioning plate 51 is tightly fitted to the end surface of the upper port 91 of the combustion chamber 9, and is penetrated and fixed with a plurality of fixing bolts, thereby forming a detachable connection.

[0109] In the above technical solution, a lower docking ring 513 is integrally provided on the outer side of the positioning plate 51; an upper docking ring 523 matching the lower docking ring 513 is integrally provided on the outer side of the pressure plate 52; a sealing groove 514 is provided on the annular outer edge of the positioning plate 51; a third sealing ring 515 is embedded in the sealing groove 514; the upper docking ring 513 and the lower docking ring 523 are matched and fitted, and then fixed with a plurality of fixing bolts, thereby realizing a detachable connection;

[0110] In the above technical solution, a short inlet tube 524 coaxial with the round tube 521 is integrally protruded from the middle of the upper end of the pressure plate 52; the short inlet tube 524 and the end faces of the short arc tube 45 are abutted against each other and then locked on the outside with a clamp to achieve communication;

[0111] In the above technical solution, a raised receiving ring 525 is provided on the upper end of the pressure plate 52; the radius of the receiving ring 525 is larger than the circle of small holes 522;

[0112] In the above technical solution, a leakage plate 6 is also included; the leakage plate 6 is fixedly clamped and arranged between the positioning plate 51 and the upper port 91 of the combustion chamber 9; the leakage plate 6 is provided with a circle of inner leakage openings 61 with a smaller inner diameter and a circle of outer leakage openings 62 with a larger inner diameter; the inner leakage openings 61 are composed of three annularly distributed thick arc leakage holes; the outer leakage openings 62 are composed of three annularly distributed thin arc leakage holes; the size of the inner leakage openings 61 matches the circular tube 521; the size of the outer leakage openings 62 matches the circle of small holes 522;

[0113] In the above technical solution, the lower end of the bottom plate 511 of the positioning plate 51 is provided with an annular groove 516 matching the leakage plate 6; the lower end of the outer ring of the leakage plate 6 abuts against the upper port 91 of the combustion chamber 9; the upper end of the outer ring of the leakage plate 6 is embedded in the annular groove 516 to form a limit position;

[0114] In the above technical solution, a core mold 63 for diversion is detachably provided in the middle of the drain pan 6; an assembly hole 64 is provided in the middle of the drain pan 6; the lower end of the core mold 63 is a column 631 matching the assembly hole 64; the upper end of the core mold 63 is a cone 632 whose bottom radius is larger than the column 631; the cone 632 of the core mold 63 corresponds coaxially to the feed short tube 524; after the column 631 is inserted into the assembly hole 64, the edge of the bottom of the cone 632 abuts against the upper end of the assembly hole 64 for abutment and limiting, thereby realizing a detachable connection;

[0115] In the above technical solution, a plurality of second glass observation windows 81 are arranged around the pouring tank 8;

[0116] Working principle:

[0117] (1) In this design, under the pressure of the pressing plate 1 in the mixing pot 7 and the vacuum state of the inner cavity of the pouring pot 8, since the combustion chamber 9 is completely in the vacuum state in the inner cavity of the pouring pot 8, the slurry will flow into the combustion chamber 9 from the short arc tube 45 in a fully closed flow field, forming a state in which the slurry flows to the middle and the gas is discharged to the side in the inner cavity 92 of the combustion chamber 9, each taking its own path. There is a separation wall between the slurry material path (i.e., the circular tube 521) and the residual gas discharge path (i.e., a circle of large holes 512 and a circle of small holes 522), so that exhaust can be achieved. When the gas in the inner cavity of the combustion chamber 9 is completely discharged and the slurry is completely filled, the slurry will be introduced from the circle of large holes 512 into the "annular space" between the outer side of the circular tube 521 and the side of the positioning plate 51;

[0118] The key point here is that according to the conversion principle of kinetic energy and static energy, the mechanical energy of the fluid is conserved (i.e. kinetic energy + gravitational potential energy + pressure potential energy = constant). When the slurry flows through a circle of large holes 512, due to the large aperture, the flow rate of the slurry is large and the pressure is small, the slurry will be poured into the above-mentioned "annular space" faster. In other words, it is very easy for the slurry to enter this "annular space" from below through a circle of large holes 512; however, at this time, a circle of small holes 522 is arranged on the top pressure plate 52. Due to the small aperture, the smaller cross-section increases the kinetic energy, resulting in lower static pressure energy, thereby generating a pressure difference on both sides of the pressure plate 52. In other words, it becomes extremely difficult for the slurry to be discharged upward from this "annular space" through a circle of small holes 522, thereby forming a stable damping effect.

[0119] Its main advantage is that a circle of large holes 512 on the positioning plate 51 cooperates with a circle of small holes 522 on the pressure plate 52 to form a "pressure difference damping valve" structure at the feed port of the combustion chamber 9, allowing the combustion chamber 9 that is already filled with slurry to "automatically wait" for other combustion chambers 9 that are not yet filled (due to the difference in force on the slurry), fundamentally ensuring that all combustion chambers 9 can be filled with slurry at the same time, evenly and stably, thereby realizing remote operation of injection casting of multi-engine charge columns.

[0120] (2) In this design, a further advantage is that the positioning plate 51 can be stably fixed on the upper port 91 of the combustion chamber 9, thereby improving support and stability, while facilitating loading and unloading and improving assembly efficiency.

[0121] (3) In this design, a further advantage is that the pressure plate 52 can be stably mounted on the upper end of the positioning plate 51, so that the two are closely fitted, and at the same time, it is convenient to load and unload, thereby improving assembly efficiency.

[0122] (4) In this design, a further advantage is that the sealing of the inlet short tube 524 and the short arc tube 45 after docking is ensured, while facilitating loading and unloading and improving assembly efficiency.

[0123] (5) In this design, a further advantage is that the slurry squeezed out from the circle of small holes 522 can be restricted by the containing ring 522 to form a storage function, which is convenient for personnel to observe.

[0124] (6) In this design, a leakage plate 6 is provided to be clamped between the positioning plate 51 and the upper port 91 of the combustion chamber 9. One of its further advantages is that the slurry (high-viscosity non-Newtonian fluid) entering from the feed short tube 524 will directly adhere to the cone 632 at the upper end of the core mold 63, and then slowly spread downward on the conical surface of the cone 632, and finally introduced into the inner cavity 92 of the combustion chamber 9 from a circle of inner leakage ports 61. This method makes the pouring of the slurry more uniform, and can stably fill the slurry into the inner cavity 92 of the combustion chamber 9;

[0125] The second further advantage is that the positions of the three thick arc-shaped fine holes are matched with the circle of large holes 512 to achieve communication, so that the exhausted gas and the subsequent slurry that fills the inner cavity 92 of the combustion chamber 9 can penetrate upward from the three thin arc-shaped leak holes into the circle of large holes 512;

[0126] (7) In this design, a further advantage is that the connection of the drain plate 6 can be ensured to be stable, while facilitating the installation and improving the assembly efficiency;

[0127] (8) In this design, a further advantage is that it can facilitate the disassembly of the core mold 63, while ensuring that the clamping connection between the core mold 63 and the drain disc 6 is more stable, thereby improving the applicability of the device.

[0128] (9) In this design, a further advantage is that the operator can observe the upper end of each pressure plate 52 through the multiple glass windows 81 outside the pouring tank 8, that is, by observing whether there is slurry overflowing from the circle of small holes 522 of the pressure plate 52, to determine whether the combustion chamber 9 is full of slurry.

[0129] In the above technical solution, a support frame is also included; the support frame includes four support columns 103 distributed in a square shape; the lower ends of the four support columns 103 are respectively fixedly connected to the bottom plate of the pouring tank 8; the upper ends of the four support columns 103 are commonly fixedly connected to a support plate 104; the upper ends of the four support columns 103 respectively pass through the support plate 104 to form a support head; a limit plate 105 is slidably arranged on the support frame; the four corners of the limit plate 105 correspond to the four support heads; a limit hole 106 is arranged in the middle of the limit plate 105; a plurality of the combustion chambers 9 They are folded and arranged in a ring shape and embedded in the limiting hole 106; a power mechanism 107 is provided at the lower end of the support plate 104; four electric screws 108 are fixedly penetrated in the middle of the four sides of the support plate 104; the shells of the four electric screws 108 are fixedly penetrated in the middle of the four sides of the support plate 104; the output shafts of the four electric screws 108 extend upward and are fixedly connected to the middle of the four sides of the limiting plate 105; the power ends of the four electric screws 108 are respectively connected to the output ends of the power mechanism 107, thereby realizing the up and down sliding connection of the entire limiting plate 105.

[0130] Working principle: In this design, by placing multiple combustion chambers 9 to be loaded with explosives in the limiting holes 106 of the limiting plate 105, a limiting protection in a retracted state is provided to all the combustion chambers 9; at the same time, according to the longitudinal length of the combustion chamber 9 of different engines, the power mechanism 107 can drive the electric screw 108 to be telescopically adjusted, so that the entire limiting plate 105 can slide up and down, allowing the limiting plate 105 to maintain a height that is more matched with the combustion chamber 9, further improving the limiting protection capability and significantly improving the functionality of the device.

[0131] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A propellant charging device integrating mixing and pouring, comprising a mixer, a mixing pot, a pouring pot, a plurality of combustion chambers to be charged placed in the pouring pot, and a material guide unit between a discharge port at the lower end of the mixing pot and a feed port of the combustion chamber, characterized in that: Also includes: A pressure cover is detachably arranged on the upper end of the mixing pot; a pressure head is arranged on the upper end of the pressure cover; A material pressing plate, which is slidably arranged inside the mixing pot; Inner extension card plates are integrally arranged on both sides of the pressure cover; outer extension baffle plates are integrally arranged on both sides of the mixing pot port; the two baffle plates are matched and overlapped with the two card plates respectively, so as to realize detachable connection; a circle of first sealing ring is embedded between the pressure cover and the mixing pot port; a pressure relief head and a spare head are arranged on the upper end of the pressure cover; a first glass observation window is arranged on the pressure cover; Differential pressure valve; the differential pressure valve comprises: A positioning plate is detachably arranged at the upper port of the combustion chamber; the bottom plate of the positioning plate is concave and a round hole is arranged in the middle; a circle of large holes is arranged around the bottom plate of the positioning plate; The middle part of the upper end of the pressure plate is connected and connected with the short arc tube; the lower end of the pressure plate is provided with a round tube inserted into the inner wall of the round hole; the pressure plate is surrounded by a circle of small holes; The bottom plate of the positioning plate is tightly fitted to the end surface of the upper port of the combustion chamber, and is penetrated and fixed with a plurality of fixing bolts, thereby forming a detachable connection; A lower docking ring is integrally provided on the outer side of the positioning plate; an upper docking ring matching the lower docking ring is integrally provided on the outer side of the pressure plate; a sealing groove is provided on the annular outer edge of the positioning plate; a third sealing ring is embedded in the sealing groove; the upper docking ring and the lower docking ring are matched and fitted together and then fixed with a plurality of fixing bolts, thereby realizing a detachable connection; A short inlet tube coaxial with the round tube is integrally protruded from the middle of the upper end of the pressure plate; the end faces of the short inlet tube and the short arc tube are abutted against each other and then locked on the outside with a clamp to achieve communication; A raised receiving ring is disposed on the upper end of the pressure plate; the radius of the receiving ring is larger than a circle of small holes; It also includes a leakage disc; the leakage disc is fixedly clamped and arranged between the positioning disc and the upper port of the combustion chamber; the leakage disc is provided with a circle of inner leakage openings with a smaller inner diameter and a circle of outer leakage openings with a larger inner diameter; the inner leakage openings are composed of three annularly distributed thick arc leakage holes; the outer leakage openings are composed of three annularly distributed thin arc leakage holes; the size of the inner leakage openings matches the round tube; the size of the outer leakage openings matches the circle of large holes; The lower end of the base of the positioning plate is provided with an annular groove matching the leakage plate; the lower end of the outer ring of the leakage plate abuts against the upper port of the combustion chamber; the upper end of the outer ring of the leakage plate is embedded in the annular groove to form a limit position; The drain pan is detachably provided with a core mold for diversion in the middle; an assembly hole is provided in the middle of the drain pan; the lower end of the core mold is a column matching the assembly hole; the upper end of the core mold is a cone with a bottom radius larger than the column; the cone of the core mold is coaxially corresponding to the feed short tube; after the column is inserted into the assembly hole, the edge of the bottom of the cone abuts against the upper end of the assembly hole for abutment and limiting, thereby realizing a detachable connection; A plurality of second glass observation windows are arranged around the pouring tank.

2. A propellant charging device integrating mixing and pouring as claimed in claim 1, characterized in that: The upper end of the pressing plate is provided with three lifting rings in a triangular distribution; the distance between the pressing plate and the inner wall of the mixing pot is 4-6 mm; the bottom surface of the pressing plate is provided with multiple circles of polytetrafluoroethylene tapered support blocks, and the side surface of the pressing plate is provided with bosses in a triangular distribution.

3. A propellant charging device integrating mixing and pouring as claimed in claim 1, characterized in that: The material guiding unit comprises a material discharge valve; the material discharge valve comprises: The main pipe on the left side of the H-shaped pipe is connected upward to the mixing pot discharge port; the branch pipe port on the right side of the H-shaped pipe is downward as the discharge port; the main pipe of the H-shaped pipe is retractably provided with a blocking rod that can block one of the upper and lower ports; The front end of the blocking rod is provided with a double-headed cone; the rear end of the blocking rod is connected to the output shaft of the telescopic cylinder; The main pipe of the H-shaped pipe is a two-section structure; the inner sides of the two ports of the upper section of the main pipe of the H-shaped pipe are respectively provided with reverse cone surfaces that match and seal with the double-headed cone; the body of the telescopic cylinder is fixedly arranged at the bottom of the lower section of the main pipe of the H-shaped pipe; A second sealing ring is embedded around the middle of the cone surface at both ends of the double-headed cone; The output shaft of the telescopic cylinder is passed through the inner cavity of the lower section of the main tube of the H-shaped tube, and a sealing disk is integrally connected to the end; the upper end of the sealing disk is fixedly connected to the bottom of the blocking rod; the size of the sealing disk matches the size of the inner cavity of the lower section of the main tube of the H-shaped tube to achieve a sealed fit.

4. A propellant charging device integrating mixing and pouring as claimed in claim 3, characterized in that: The outlet of the right branch pipe of the H-shaped pipe is butt-connected with a hose valve.

5. The propellant charging device integrating mixing and pouring as claimed in claim 1, characterized in that: Also includes a distributor; the distributor includes: The upper end of the collecting barrel is connected to the discharge port of the hose valve; a plurality of distribution pipes are evenly arranged around the lower end of the collecting barrel; the discharge port of each distribution pipe is connected to the inlet of the combustion chamber; The outlet of the hose valve is connected to a connecting pipe; the lower flange plate of the connecting pipe is flange-jointed with the upper flange plate of the pouring tank; an annular groove is arranged on the upper flange plate of the pouring tank; the upper end of the collecting barrel is open, and an outer edge plate matching the annular groove is arranged integrally around it; Two limit blocks are arranged on the annular groove; two limit grooves matching the two limit blocks are arranged on the outer edge plate; the two limit blocks are embedded in the two limit grooves; a fourth sealing ring is arranged on the upper flange plate of the pouring tank; The top cover of the aggregate barrel is connected with three pneumatic joints; The lower end of the collecting barrel is provided with a short conical surface; the upper end of each of the distribution pipes is connected to the short conical surface; The plurality of material distribution pipes are specifically six; the upper ends of the six material distribution pipes are arranged on the short cone surface at six equal angles; the six material distribution pipes are arranged to be tilted downward at 45 degrees in space; The lower ends of the plurality of material distribution pipes are respectively provided with two branch pipes; each of the branch pipes is connected and butted to the combustion chamber inlet in a sealed manner; A short arc tube for docking with the inlet of the combustion chamber is arranged at the end of each branch pipe.

6. The propellant charging device integrating mixing and pouring as claimed in claim 1, characterized in that: It also includes a support frame; the support frame includes four support columns distributed in a square; the lower ends of the four support columns are respectively fixedly connected to the bottom plate of the pouring tank; the upper ends of the four support columns are jointly fixedly connected to a support plate; the upper ends of the four support columns respectively pass through the support plate to form a support head; a limit plate is slidably arranged on the support frame; the four corners of the limit plate correspond to the four support heads; a limit hole is arranged in the middle of the limit plate; a plurality of the combustion chambers are gathered and arranged in a ring shape, and are embedded in the limit holes; a power mechanism is arranged at the lower end of the support plate; four electric screws are fixedly penetrated in the middle of the four sides of the support plate; the outer shells of the four electric screws are fixedly penetrated in the middle of the four sides of the support plate; the output shafts of the four electric screws are extended upward and fixedly connected to the middle of the four sides of the limit plate; the power ends of the four electric screws are respectively connected to the output ends of the power mechanism, thereby realizing the up and down sliding connection of the entire limit plate.

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