Automatic pouring system for energetic fluid

Abstract

The invention discloses an automatic pouring system for energetic fluid, which comprises a first-stage hopper and a second-stage hopper, the first-stage hopper is connected with the second-stage hopper through a control valve, and the second-stage hopper is connected with a curing mold through a control valve; the pushing power of the energetic fluid entering the second-stage hopper from the first-stage hopper is the pressure difference between vacuum and atmospheric pressure; the control valve is used for controlling the flow speed of the energetic fluid. Compared with the prior art, the automatic pouring mode of energetic materials is achieved through the first-stage hopper, the second-stage hopper and the control valve, the safety of the product pouring process is greatly improved, the product pouring quality is guaranteed, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum pouring process and automatic control system, in particular to an automatic pouring system for energetic fluid. Background Art

[0002] In the engine, the production and processing quality of solid fuel grains have a decisive influence on their combustion performance. This process involves converting energetic materials into grains with specific shapes and sizes through specific casting processes to ensure that the predetermined combustion behavior can be achieved when the engine is working. The production casting process of energetic fluids adopts "manual face-to-face" operation: the operator controls the feed valve while observing at the casting station. In the multi-product multi-station casting process, each station needs to be manned to add, unload, observe and adjust the valve. This "manual face-to-face" operation mode with concentrated personnel has high labor intensity, high safety risks and low production efficiency. At the same time, the volatile gases of energetic fluids are toxic and harmful to the human body. "Manual face-to-face" operation is prone to cause major safety accidents at the casting site. Despite the high production risk, the production task of energetic fluids is still growing rapidly. Due to the large number and complex structure of energetic fluid production, a large number of personnel are required to perform on-site operations during the casting process, which poses great safety risks. For a long time in the past, due to complex and strict performance requirements, many production links could only ensure quality through on-site "manual face-to-face" work by personnel, resulting in inconsistent casting quality.

[0003] In view of the above problems, the present invention proposes an automatic pouring system for energetic fluid. Summary of the invention

[0004] The object of the present invention is to provide an automatic pouring system for energetic fluids, so as to achieve safe, rapid and high-quality pouring of energetic fluids.

[0005] The technical solution for achieving the purpose of the present invention is: an automatic pouring system for energetic fluid, comprising a primary hopper and a secondary hopper, the primary hopper and the secondary hopper are connected by a control valve, and the secondary hopper and the curing mold are connected by a control valve; the driving force for the energetic fluid to enter the secondary hopper from the primary hopper is the pressure difference between vacuum and atmospheric pressure; the control valve is used to control the flow rate of the energetic fluid.

[0006] A pressing plate is installed on the first-stage hopper. The pressing plate is in floating contact with the energetic fluid inside the first-stage hopper and moves up and down with the liquid level of the energetic material in the first-stage hopper, thereby reducing the occurrence of vortex suction.

[0007] The control valve is a hose valve.

[0008] The first-stage hopper and the second-stage hopper are both provided with a water bath interlayer, which is connected to the circulating water of the external water bath system and is used to heat the energetic fluid in the first-stage hopper and the second-stage hopper to a specified temperature.

[0009] The hose valve controls the flow rate through the hose valve drive system; the hose valve drive system includes: a servo motor, a right-angle reducer, a coupling and a pneumatic clamp; the output shaft of the servo motor is connected to the input shaft of the right-angle reducer, and the output shaft of the right-angle reducer is fixedly connected to the hose valve rotation control rod through the coupling and the pneumatic clamp; the servo motor controls the rotation of the mechanical hose valve rotation control rod to achieve precise control of the valve opening range.

[0010] The secondary hopper is provided with a vacuum interface, which is connected to an external vacuum pumping system. During pouring, the secondary hopper 5 is evacuated to achieve a vacuum environment in the secondary hopper.

[0011] The secondary hopper is provided with a vacuum breaking interface, which is connected to a vacuum breaking valve, which is connected to an inert gas source. The vacuum breaking valve is opened to change the secondary material 5 from a vacuum environment to a normal pressure or slightly positive pressure environment.

[0012] A flower plate is arranged at the inlet of the secondary hopper, and the flower plate is connected to the outlet of the control valve to remove bubbles in the energetic fluid.

[0013] An observation hole is provided on the secondary hopper, an observation mirror is installed on the observation hole, and a camera is installed on the mirror to realize remote real-time monitoring of the situation in the secondary hopper.

[0014] The automatic pouring system also includes a temperature sensor, a distance sensor and a vacuum sensor; the temperature sensor and the distance sensor are arranged above the primary hopper and the secondary hopper to monitor the temperature and liquid level of the energetic fluid in the two hoppers in real time; the vacuum sensor is installed on the inner wall of the secondary hopper to monitor the vacuum pressure in the secondary hopper in real time.

[0015] Compared with the prior art, the present invention has the following significant advantages:

[0016] (1) The present invention discloses an automatic pouring system for energetic fluids, which realizes automatic pouring of energetic materials by using a primary hopper, a secondary hopper, and a hose valve drive system in a closed vacuum box environment, thereby improving the safety of the product pouring process, ensuring the pouring quality of the product, and improving production efficiency.

[0017] (2) The present invention discloses an automatic pouring system for energetic fluids, wherein a water bath interlayer is designed in the primary hopper and the secondary hopper respectively, and the energetic fluid can be processed to a specified temperature.

[0018] (3) The present invention discloses an automatic pouring system for energetic fluids, which is designed with a hose valve drive system and can accurately control the pouring speed.

[0019] (4) The present invention discloses an automatic pouring system for energetic fluids. During the first pouring, the fluid is pre-degassed by passing through a flower plate and a vacuum degree of a secondary hopper. After the pre-degassed system, the gas in the fluid has been removed. When the secondary hopper is poured into a mold, there will be no gas rupture. At this time, the boiling layer can be eliminated.

[0020] (5) The present invention discloses an automatic pouring system for energetic fluids. When the surface of an energetic material contacts other objects, the viscosity of the liquid surface increases and the fluidity of the fluid decreases. Therefore, a pressure plate that increases the viscosity of the furnace surface is placed at the center of the fluid pouring where a "vortex" is likely to be generated. This increases the viscosity of the fluid surface and reduces the fluid flow rate, thereby reducing the size of the "vortex".

[0021] (6) The present invention discloses an automatic pouring system for energetic fluids, which realizes the automatic pouring system for energetic fluids and forms the automatic pouring process specification for energetic fluids by adopting a multi-sensor real-time monitoring system for visual, temperature, displacement and other information in the automatic pouring production process, as well as quantitative feeding and pouring devices. This can improve production efficiency, ensure product quality, reduce on-site personnel, eliminate safety risks, and achieve the goals of ensuring the personal safety of employees and safe production.

[0022] (7) The automatic pouring system for energetic fluids disclosed in the present invention explores a new approach for realizing large-scale charging production of energetic fluids in the future, and has practical significance for promoting technological transformation and technological progress in the relevant pouring industry in my country. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a schematic structural diagram of an automatic pouring system for energetic fluids according to the present invention.

[0024] Figure 2 It is a cross-sectional view of an automatic pouring system for energetic fluids according to the present invention.

[0025] Figure 3 It is a cross-sectional view of an automatic pouring system for energetic fluids according to the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the attached embodiment of the present invention Figure 1-Figure 3, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0027] The automatic pouring system of the present invention mainly adopts a two-stage hopper pouring system, which mainly includes a pressing plate 1, a first-stage hopper 2, a second-stage hopper 5, a first hose valve 3, a second hose valve 6, a hose valve driving system and a bracket 7.

[0028] The bracket 7 is used for the overall support of the automatic pouring system and the installation of various components; the first-stage hopper 2 is fixedly mounted on the bracket 7, the second-stage hopper 5 is fixedly mounted on the bracket 7, and the first-stage hopper 2 and the second-stage hopper 5 are controlled by the first hose valve 3; the first-stage hopper 2 is a top opening structure, and the second-stage hopper 5 is a vacuum structure when working, and the driving force for the energetic fluid to enter the second-stage hopper 5 from the first-stage hopper 2 is the pressure difference between the vacuum and the atmospheric pressure.

[0029] The pressing plate 1 is arranged above the primary hopper 2. The pressing plate 1 floats on the liquid surface of the energetic fluid inside the primary hopper 2 and moves up and down with the liquid level of the energetic material in the primary hopper 2, thereby preventing and reducing the vortex suction phenomenon of the fluid in the primary hopper 2.

[0030] The valve opening of the first hose valve 3 is controlled by the hose valve drive system. The hose valve drive system includes: a servo motor 18, a right-angle reducer 19, a coupling 17 and a pneumatic clamp 16. The jaws of the pneumatic clamp 16 clamp the rotation control rod of the mechanical first hose valve 3. The servo motor 18 is fixed on the bracket 7, and the output shaft of the servo motor 18 is connected to the input shaft of the right-angle reducer 19. The output shaft of the right-angle reducer 19 is fixedly connected to the rotation control rod of the first hose valve 3 through the coupling 17 and the pneumatic clamp 16; the rotation of the rotation control rod of the mechanical first hose valve 3 is controlled by the servo motor 18 to achieve precise control of the valve opening.

[0031] The secondary hopper 5 and the curing mold are connected and disconnected by the second hose valve 6. The second hose valve 6 is also controlled by the hose valve drive system, and the connection mode between the hose valve drive system and the second hose valve 6 is the same as the connection mode between the hose valve drive system and the first hose valve 3.

[0032] The secondary hopper 5 is provided with a vacuum interface 21 , which is connected to an external vacuum pumping system. When pouring, the secondary hopper 5 is evacuated to achieve a vacuum environment in the secondary hopper 5 .

[0033] The automatic pouring system for energetic fluids further comprises a vacuum breaking valve 4. A vacuum breaking interface is provided on the secondary hopper 5. The vacuum breaking interface is connected to the vacuum breaking valve 4. The vacuum breaking valve 4 is connected to a nitrogen gas source. The vacuum breaking valve 4 is opened to change the vacuum environment of the secondary hopper 5 to normal pressure or slightly positive pressure. The secondary hopper 5 and the curing mold are connected and disconnected by a second hose valve 6.

[0034] There is a first water bath interlayer 2-1 in the first hopper 2; the first water bath interlayer 2-1 is provided with a first water circulation interface 10 and a second water circulation interface 20. After connecting the circulating water of the external water bath system, the energetic fluid in the first hopper 2 can be heated to a specified temperature to realize thermal circulation water heating.

[0035] There is a second water bath interlayer 5-1 in the secondary hopper 5, and the second water bath interlayer 5-1 is provided with a third water circulation interface 14 and a fourth water circulation interface 22. After connecting the circulating water of the external water bath system, the energetic fluid in the secondary hopper 5 can be heated to a specified temperature to realize thermal circulation water heating.

[0036] A flower plate 15 is provided at the entrance of the secondary hopper 5, and the flower plate 15 is connected to the outlet of the first hose valve 3. The flower plate 15 is similar to a shower head in appearance and has a certain number of holes of a certain diameter for removing bubbles in the energetic fluid.

[0037] The bottom of the secondary hopper 5 is in an inverted V shape, which facilitates the flow of the slurry and prevents material accumulation;

[0038] An observation hole is provided on the secondary hopper 5 , an observation mirror 11 is installed on the observation hole, and a camera 12 is also installed on the mirror 11 for realizing remote real-time monitoring of the situation in the secondary hopper 5 .

[0039] A vacuum sensor 13 is also installed on the wall of the secondary hopper 5 to monitor the vacuum pressure in the secondary hopper 5 in real time.

[0040] The automatic pouring system for energetic fluid also includes a temperature sensor 8 and a distance sensor 9; the temperature sensor 8 and the distance sensor 9 are arranged above the primary hopper 2 and the secondary hopper 5, and are used to monitor the temperature and liquid level of the energetic fluid in the two hoppers in real time.

[0041] The automatic pouring system for energetic fluids of the present invention controls two hose valves by two hose valve driving systems, and controls the opening and closing degree of the hose valves to control the flow of energetic materials by combining the weighing sensor installed at the bottom of the curing mold and the liquid level drop speed and other factors, thereby automatically and accurately controlling the pouring speed and the automatic start and stop of the pouring system;

[0042] The height sensor monitors the liquid level drop in real time and can fit the drop speed curve through calculation to provide data support for production.

[0043] The working process of the automatic pouring system for energetic fluid in the present invention is as follows:

[0044] The hose valve driving system is controlled to close the first hose valve 3 and the second hose valve 6, and the energetic material is directly poured into the primary hopper 2, and the secondary hopper 5 is vacuumed; the water bath system heats the water in the first water bath interlayer 2-1 in the primary hopper 2, and then heats the energetic material fluid in the primary hopper 2 to a specified temperature;

[0045] Then, the hose valve driving system is controlled to control the first hose valve 3, and the fluid speed is controlled at a specified flow rate. The fluid passes through the flower plate 15 to remove bubbles in the fluid, and then enters the secondary hopper 5; at the same time, the water bath system heats the water in the second water bath interlayer 5-1 in the secondary hopper 5, and then heats the energetic material fluid in the secondary hopper 5 to a specified temperature; and then the hose valve driving system is controlled to control the second hose valve 6 to control the fluid speed and flow rate of the energetic fluid entering the curing mold.

Claims

1. An automatic pouring system for energetic fluids, characterized in that: It includes a primary hopper and a secondary hopper, the primary hopper and the secondary hopper are connected through a control valve, and the secondary hopper and the curing mold are connected through a control valve; the driving force for the energetic fluid to enter the secondary hopper from the primary hopper is the pressure difference between vacuum and atmospheric pressure; the control valve is used to control the flow rate of the energetic fluid.

2. An automatic pouring system for energetic fluids according to claim 1, characterized in that: A pressing plate is installed on the first-stage hopper. The pressing plate is in floating contact with the energetic fluid inside the first-stage hopper and moves up and down with the liquid level of the energetic material in the first-stage hopper, thereby reducing the occurrence of vortex suction.

3. An automatic pouring system for energetic fluids according to claim 1, characterized in that: The control valve is a hose valve.

4. An automatic pouring system for energetic fluids according to claim 1, characterized in that: The first-stage hopper and the second-stage hopper are both provided with a water bath interlayer, which is connected to the circulating water of the external water bath system and is used to heat the energetic fluid in the first-stage hopper and the second-stage hopper to a specified temperature.

5. An automatic pouring system for energetic fluids according to claim 3, characterized in that: The hose valve controls the flow rate through the hose valve drive system; the hose valve drive system includes: a servo motor, a right-angle reducer, a coupling and a pneumatic clamp; the output shaft of the servo motor is connected to the input shaft of the right-angle reducer, and the output shaft of the right-angle reducer is fixedly connected to the hose valve rotation control rod through the coupling and the pneumatic clamp; the servo motor controls the rotation of the mechanical hose valve rotation control rod to achieve precise control of the valve opening range.

6. An automatic pouring system for energetic fluids according to claim 1, characterized in that: A vacuum interface is provided on the secondary hopper, and the vacuum interface is connected to an external vacuum pumping system. During pouring, the secondary hopper is evacuated to achieve a vacuum environment in the secondary hopper.

7. An automatic pouring system for energetic fluids according to claim 1, characterized in that: A vacuum breaking interface is provided on the secondary hopper, the vacuum breaking interface is connected to a vacuum breaking valve, the vacuum breaking valve is connected to an inert gas source, and the vacuum breaking valve is opened to change the secondary material from a vacuum environment to a normal pressure or slightly positive pressure environment.

8. An automatic pouring system for energetic fluids according to claim 1, characterized in that: A flower plate is arranged at the inlet of the secondary hopper, and the flower plate is connected to the outlet of the control valve to remove bubbles in the energetic fluid.

9. An automatic pouring system for energetic fluids according to claim 1, characterized in that: An observation hole is provided on the secondary hopper, an observation mirror is installed on the observation hole, and a camera is installed on the mirror to realize remote real-time monitoring of the situation in the secondary hopper.

10. An automatic pouring system for energetic fluids according to claim 1, characterized in that: The automatic pouring system also includes a temperature sensor, a distance sensor and a vacuum sensor; the temperature sensor and the distance sensor are arranged above the primary hopper and the secondary hopper for real-time monitoring of the temperature and liquid level of the energetic fluid in the two hoppers; the vacuum sensor is installed on the inner wall of the secondary hopper for real-time monitoring of the vacuum pressure in the secondary hopper.

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