Emulsion explosive foaming agent feeding device

Abstract

The invention belongs to the technical field of emulsion explosive production, and discloses an emulsion explosive foaming agent feeding device which comprises a mixing tank, the middle of the top end of the mixing tank is fixedly sleeved with a feeding pipe, the top end of the feeding pipe is fixedly communicated with a metering tank, and a metering pump is arranged in the metering tank; a defoaming assembly is mounted at the position, close to the bottom end, of the inner cavity of the mixing tank. A movable plate is adsorbed to the lowest point, an elastic telescopic rod is compressed, at the position, the movable plate immediately pushes a sealing plug through an extension rod to tightly close a feeding opening, follow-up materials are thoroughly cut off, and any splashing or backflow is prevented, and meanwhile, the movable plate located at the lowest point pushes a mixing rod to an unfolded working posture through a connecting rod; and the two working procedures are driven by the power gear to start rotating and mixing, so that the possibility of simultaneous occurrence of the two working procedures is fundamentally avoided, clear separation, stability and controllability of the technological process are ensured, and the uniformity of the mixture and the quality consistency of the final product are greatly improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of emulsion explosive production, and particularly relates to an emulsion explosive foaming agent feeding device. BACKGROUND

[0002] Emulsion explosive is an industrial explosive widely used in mining, infrastructure construction and other fields. The stability and reliability of its performance depend largely on the density of the explosive. The most mainstream density adjustment technology at present is to add a chemical foaming agent (such as sodium nitrite solution) to react with a sensitizer (such as thiourea) in the emulsion matrix to produce uniformly distributed micro-bubbles, thereby precisely controlling the density of the explosive. Therefore, the feeding, mixing and quality control of the foaming agent are the core process links in the production process of emulsion explosive. The existing foaming agent feeding device usually includes a metering tank for storing and metering the foaming agent, a mixing tank for containing and mixing the emulsion matrix, and a set of stirring system. The basic working process is as follows: a certain amount of foaming agent is fed into the mixing tank through a metering pump, and then the stirring system is started to mix the foaming agent and the emulsion matrix and make them chemically react to generate bubbles. This process requires that the feeding of the foaming agent must be accurate, the mixing must be uniform, and the generated bubbles must be small, stable and uniformly distributed. Any negligence in any of the links will result in substandard explosive density, performance degradation, and even safety hazards. At present, the industry generally adopts an intermittent or semi-continuous production process in which the feeding and mixing steps are separated.

[0003] However, in some simple systems, in order to improve efficiency, the operator may feed the foaming agent while the stirring is on. This practice is extremely dangerous. The high-speed rotating stirring paddle will generate strong vortex and splashing. Once the foaming agent liquid flow enters the mixing tank, it will be disturbed by the irregular flow field, resulting in its inability to disperse uniformly along the predetermined path. Part of the foaming agent may be "flung" onto the tank wall or stirring shaft in the moment of contacting the matrix, forming local enrichment, while another part may be "reflected" back to the vicinity of the feeding port by the splashing matrix, causing "apparent" errors in metering. This disturbance leads to extremely uneven initial distribution of the foaming agent in the matrix. In order to avoid such disturbance, some other processes adopt a sequential operation of feeding first and mixing later. However, this method also has defects. The density difference between the foaming agent (especially water-based solution) and the high-viscosity emulsion matrix is large. If the mixing is not started immediately after feeding, the foaming agent may "sink" or "gather" near the feeding point due to gravity, also causing uneven initial distribution, which requires the mixing system to consume longer time and more power to disperse it uniformly. This not only reduces the production efficiency, but also may damage the microstructure of the emulsion matrix due to excessive shearing.

[0004] Secondly, the ideal state for the bubbles generated by the reaction of the foaming agent and the matrix is ​​that they are tiny (micrometer-scale) and uniformly distributed. However, in traditional mixing systems, the purpose of mixing is merely to "stir evenly." The intense mechanical shearing and fluid collisions, while promoting the mixing of reactants, also easily cause the generated bubbles to "cobble together," that is, small bubbles merge into large bubbles. These excessively large and unevenly distributed "inferior" bubbles not only fail to play an effective sensitizing role but also become defect points inside the explosive, seriously affecting the explosive's detonation performance and stability. Existing mixing devices generally lack mechanisms for "online control" or "screening" of bubble morphology during the mixing process. In addition, in order to achieve functions such as dosing, mixing, and even subsequent defoaming or filtration, existing production lines often need to connect multiple independent equipment units in series, such as metering pumps, mixing tanks, transfer tanks, and defoamers. This "discrete" equipment layout not only occupies a large area and has high investment costs, but also has complex system piping, and the control logic (PLC) needs to coordinate multiple actuators, increasing the system's complexity and potential for failure. Meanwhile, the material transfer and cleaning-in-process (CIP) process between equipment is also extremely cumbersome, which is not conducive to flexible production and efficient operation and maintenance. Summary of the Invention

[0005] The purpose of this invention is to provide an emulsion explosive foaming agent dispensing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an emulsion explosive foaming agent dispensing device, comprising a mixing tank, a dispensing pipe fixedly sleeved at the middle of the top of the mixing tank, a metering tank fixedly connected to the top of the dispensing pipe, a metering pump built into the metering tank, a defoaming component installed near the bottom of the mixing tank, a discharge port fixedly connected to the bottom of the mixing tank, a power shaft fixedly installed at the middle of the bottom of the defoaming component, the bottom of the power shaft penetrating the bottom of the discharge port and a power gear fixedly installed thereon, the power gear being connected to an external power gearbox, and the external power gearbox providing rotational power to the power gear, a movable plate provided inside the mixing component, and a dispensing port fixedly connected to the bottom of the dispensing pipe, the bottom of the dispensing port being connected to the interior of the mixing tank;

[0007] The vertical displacement of the movable plate acts on the dispensing pipe to open and close the dispensing port, completing the feeding process. It also acts on the mixing component to collect and expand the mixing component, achieving mixing. Furthermore, it acts on the defoaming component to filter and remove foam from the foaming agent.

[0008] As a further technical solution of the present invention, an electromagnet is fixedly installed on the left side of the bottom end of the movable plate, and an elastic telescopic rod is fixedly installed on the right side of the bottom end of the movable plate, with the bottom end of the elastic telescopic rod connected to the mixing component.

[0009] As a further technical solution of the present invention, the mixing component includes a mounting plate, on the outer side of the mounting plate, a mixing rod is rotatably mounted at equal intervals along the axis, a through hole is opened in the middle of the mounting plate, and the bottom end of the elastic telescopic rod is connected to the top end of the mounting plate.

[0010] As a further technical solution of the present invention, a second fixed seat is fixedly installed in the middle of the inner side of the mixing rod. The end of the second fixed seat away from the mixing rod is movably connected to a connecting rod through a rotating shaft. The end of the connecting rod away from the first fixed seat is movably connected to the second fixed seat through a rotating shaft. The second fixed seats are axially and equally spaced on the outer side of the movable plate and connected to the movable plate. When the electromagnet and the mounting plate are attracted to each other, the movable plate is at the lowest point position.

[0011] As a further technical solution of the present invention, the inside of the dispensing tube is provided with a sealing plug, and the bottom end of the sealing plug is fixedly connected to an extension rod. The bottom end of the extension rod passes through the bottom end of the dispensing port and is equipped with a bearing. The bottom end of the bearing is connected to the middle of the top of the movable plate.

[0012] As a further technical solution of the present invention, when the movable plate is at its lowest point, the sealing plug completely seals the injection port; when the movable plate is not at its lowest point, the fluid flows out through the gap between the injection port and the extension rod.

[0013] As a further technical solution of the present invention, the defoaming component includes a storage box, a first filter screen is fixedly installed on the outer side of the storage box, and the defoaming component also includes a second filter screen located below the first filter screen, with the outer sides of the first and second filter screens fixedly sleeved with the inner side of the mixing tank.

[0014] As a further technical solution of the present invention, a linkage shaft is movably sleeved in the middle of the storage box, and a defoaming plate located on the inner side of the storage box is fixedly installed at the bottom end of the linkage shaft. Bubble-piercing nails are axially and evenly installed on the outer side of the defoaming plate. The middle part of the bottom end of the defoaming plate is connected to the power shaft, and the top end of the linkage shaft passes through the top end of the storage box and is connected to the middle part of the bottom end of the movable plate.

[0015] As a further technical solution of the present invention, when the movable plate is at its lowest point, the bubble pins are located between the first filter screen and the second filter screen, and when the movable plate is at its highest point, the bubble pins are completely stored in the inner cavity of the storage box.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention utilizes the vertical lifting displacement of a movable plate to simultaneously drive two key components: the sealing plug of the dispensing port and the mixing rod of the mixing assembly. When the system is in the "dispensing state," the electromagnet is de-energized, and the elastic telescopic rod is at its longest position, pushing the movable plate to its highest point. At this position, the movable plate lifts the sealing plug via the extension rod, keeping the dispensing port open and allowing the foaming agent in the metering tank to be smoothly injected. Simultaneously, the movable plate at its highest point retracts the mixing rod to a folded state via a connecting rod. At this time, the mixing system is in a non-working state, the internal flow field of the mixing tank is calm, and there is no mechanical stirring interference, ensuring the stability of the foaming agent dispensing. The accuracy of metering is ensured. When the dispensing is complete and the system switches to the "mixing state," the electromagnet is activated, attracting the movable plate to its lowest point. The elastic telescopic rod is compressed. In this position, the movable plate immediately pushes the sealing plug tightly to close the dispensing port through the extension rod, completely cutting off subsequent materials and preventing any splashing or backflow. At the same time, the movable plate at the lowest point pushes the mixing rod to the "unfolded" working posture through the connecting rod, and is driven by the power gear to start rotating and mixing. This fundamentally eliminates the possibility of two processes occurring simultaneously, ensuring clear separation and stable control of the process, and greatly improving the uniformity of the mixture and the consistency of the final product quality.

[0018] 2. This invention achieves efficient macroscopic mixing of materials by extending the mixing rod and rotating it, driven by a power shaft, when the movable plate is at its lowest point in a "mixing state." Simultaneously, the defoaming component, also driven by the power shaft, begins operation. The downward movement of the movable plate causes the bubble-piercing spikes in the defoaming component to descend from the storage box into the working area, located between the first and second filter screens. During the mixing process, the material in the mixing tank is forced through the first filter screen, where larger particles or clumps are initially "pre-treated." Then, the material enters the area where the bubble-piercing spikes are located, and the rotating... The defoaming disc drives the bubble-piercing nails to rotate at high speed, physically "piercing" and "shearing" the large and unstable bubbles that have already formed in the material, breaking them down into smaller bubbles. The "refined" material then passes through a second filter to further ensure the uniformity and fineness of the bubbles before flowing out of the defoaming component. Simultaneously, a micro-bubble control process of "filtration-bubble piercing-re-filtration" is carried out. This controls the size distribution of bubbles from the source, avoids the generation and aggregation of large bubbles, significantly improves the foaming quality, and thus ensures the detonation performance and storage stability of the emulsion explosive.

[0019] 3. This invention simplifies the equipment structure, integrating the production process that previously required multiple independent devices (metering pump, mixing tank, defoamer) and complex pipelines and valves into a compact mixing tank. The lifting and lowering of the movable plate becomes the master switch for the entire process. At the highest point, it automatically enters the "dispensing" mode (opening the dispensing port, retracting the mixing paddle, and retracting the defoaming nail), and at the lowest point, it automatically enters the "mixing / defoaming" mode (closing the dispensing port, extending the mixing paddle, and extending the defoaming nail). This design not only significantly reduces the equipment's footprint, manufacturing costs, and maintenance complexity, but also replaces the traditional "timing control" that relies on multiple sensors, actuators, and complex PLC programs through simple and reliable mechanical linkage. This greatly improves the system's reliability, reduces production accidents caused by control system failures or timing errors, and features high automation, easy operation, and efficient process coordination. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a cross-sectional schematic diagram of a partial structure of the present invention;

[0022] Figure 3 This is a partial cross-sectional view of the structure of the defoaming component of the present invention;

[0023] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the metering tank and dispensing pipe of the present invention;

[0024] Figure 5 This is a schematic diagram illustrating the cooperation between the movable plate and the hybrid component structure of the present invention;

[0025] Figure 6 This is a schematic diagram showing the cooperation between the movable plate, the elastic telescopic rod, and the electromagnet structure of the present invention.

[0026] Figure 7 This is a separate schematic diagram of the hybrid component structure of the present invention.

[0027] In the diagram: 1. Mixing tank; 2. Metering tank; 3. Dispensing pipe; 4. Sealing plug; 5. Dispensing port; 6. Extension rod; 7. Bearing; 8. Defoaming assembly; 801. Storage box; 802. First filter screen; 803. Second filter screen; 804. Linkage shaft; 805. Defoaming disc; 806. Bubble-piercing nail; 9. Power shaft; 10. Power gear; 11. Movable plate; 12. Elastic telescopic rod; 13. Electromagnet; 14. Mixing assembly; 141. Mounting plate; 142. Through hole; 143. Mixing rod; 144. First fixed seat; 145. Second fixed seat; 146. Connecting rod; 15. Discharge port. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1 to 7 As shown, in this embodiment of the invention, the emulsion explosive foaming agent dispensing device includes a mixing tank 1, a dispensing pipe 3 fixedly sleeved at the middle of the top of the mixing tank 1, a metering tank 2 fixedly connected to the top of the dispensing pipe 3, a metering pump built into the metering tank 2, a defoaming component 8 installed near the bottom of the inner cavity of the mixing tank 1, a discharge port 15 fixedly connected to the bottom of the mixing tank 1, a power shaft 9 fixedly installed at the middle of the bottom of the defoaming component 8, the bottom of the power shaft 9 passing through the bottom of the discharge port 15 and a power gear 10 fixedly installed, the power gear 10 being connected to an external power gearbox, and the external power gearbox providing rotational power to the power gear 10, a movable plate 11 inside the mixing component 14, a dispensing port 5 fixedly connected to the bottom of the dispensing pipe 3, and the bottom of the dispensing port 5 being connected to the interior of the mixing tank 1;

[0030] The vertical displacement of the movable plate 11 acts on the dispensing pipe 3 to open and close the dispensing port 5, completing the feeding, and also acts on the mixing component 14 to realize the storage and expansion of the mixing component 14, achieving mixing, and acts on the defoaming component 8 to filter and defoam the foaming agent.

[0031] Before using the device, an external motor and gearbox must be prepared, and the output end of the gearbox must be meshed with the outer side of the power gear 10. The corresponding foaming agent must be injected into the metering tank 2 and wait for it to be dispensed.

[0032] During dispensing, a metering pump inside metering tank 2 is used to inject a fixed amount of foaming agent into the dispensing pipe 3 through the bottom of metering tank 2, awaiting subsequent processing.

[0033] like Figure 2 and Figure 5 as well as Figure 6 and Figure 7As shown, an electromagnet 13 is fixedly installed on the left side of the bottom end of the movable plate 11, and an elastic telescopic rod 12 is fixedly installed on the right side of the bottom end of the movable plate 11. The bottom end of the elastic telescopic rod 12 is connected to the mixing component 14. The mixing component 14 includes a mounting plate 141. A mixing rod 143 is rotatably mounted on the outer side of the mounting plate 141 at equal intervals along the axis. A through hole 142 is opened in the middle of the mounting plate 141. The bottom end of the elastic telescopic rod 12 is connected to the top end of the mounting plate 141. A second fixing seat 145 is fixedly installed in the middle of the inner side of the mixing rod 143. The end of the second fixing seat 145 away from the mixing rod 143 is movably connected to a connecting rod 146 through a rotating shaft. The end of the connecting rod 146 away from the first fixing seat 144 is movably connected to the second fixing seat 145 through a rotating shaft. The second fixing seats 145 are axially distributed at equal intervals on the outer side of the movable plate 11 and are connected to the movable plate 11. When the electromagnet 13 and the mounting plate 141 are attracted to each other, the movable plate 11 is at its lowest point.

[0034] When the foaming agent is being mixed, the movable plate 11 moves downward. When the movable plate 11 reaches its lowest point, the multiple connecting rods 146 on the outer side of the movable plate 11 can be deflected diagonally downward until they are deflected from a near-vertical state to a near-horizontal state. At this time, the multiple mixing rods 143 deflect outward, that is, the multiple mixing rods 143 unfold. At this time, the power can be transmitted to the mixing component 14 through the power gear 10, the power shaft 9, and the defoaming component 8. The multiple mixing rods 143 then rotate circumferentially to mix the foaming agent located inside the mixing tank 1.

[0035] After mixing is complete, electromagnet 13 is turned off, and movable plate 11 rises to its highest point. At this time, multiple connecting rods 146 deflect diagonally upwards and drive multiple mixing rods 143 to complete the storage. At this time, the device is in a non-mixing state to avoid excessive stirring of mixing rods 143 affecting the addition of foaming agent.

[0036] like Figure 2 and Figure 4 As shown, the inside of the dispensing tube 3 is provided with a sealing plug 4. The bottom end of the sealing plug 4 is fixedly connected to an extension rod 6. The bottom end of the extension rod 6 passes through the bottom end of the dispensing port 5 and is equipped with a bearing 7. The bottom end of the bearing 7 is connected to the middle of the top of the movable plate 11. When the movable plate 11 is at its lowest point, the sealing plug 4 completely seals the dispensing port 5. When the movable plate 11 is not at its lowest point, the fluid flows out through the gap between the dispensing port 5 and the extension rod 6.

[0037] Example: When the device is in the dispensing state, the electromagnet 13 is not activated, the elastic telescopic rod 12 is in its longest state, the movable plate 11 is in its highest position, and the sealing plug 4 and the extension rod 6 are both in their highest positions. At this time, the foaming agent can be discharged through the gap between the dispensing port 5 and the extension rod 6 and enter the interior of the mixing tank 1 to wait for mixing.

[0038] During mixing, electromagnet 13 is activated, generating magnetic force and attracting the mounting plate 141. At this time, elastic telescopic rod 12 is compressed, and movable plate 11 moves to the lowest position, simultaneously driving extension rod 6 and sealing plug 4 to move down. At this time, sealing plug 4 can completely seal the inlet 5, preventing the foaming agent from being discharged through the inlet 5, automatically cutting off the injection of foaming agent to carry out the mixing process.

[0039] By utilizing the vertical displacement of the movable plate 11, the foaming agent is automatically dispensed when the movable plate 11 is at its highest point, and the device is in a non-mixing state at this time, so it will not affect the dispensing process. When the device is in a mixing state, that is, when the movable plate 11 is at its lowest point, the device automatically shuts off the dispensing. The entire process is completed automatically, which can effectively avoid the interference of mixing on dispensing, as well as the interference of dispensing on mixing, thus meeting the requirements for foaming agent dispensing and improving the dispensing quality.

[0040] like Figure 2 and Figure 3 As shown, the defoaming component 8 includes a storage box 801, with a first filter screen 802 fixedly installed on the outer side of the storage box 801. The defoaming component 8 also includes a second filter screen 803 located below the first filter screen 802. The outer sides of the first filter screen 802 and the second filter screen 803 are fixedly sleeved with the inner side of the mixing tank 1. A linkage shaft 804 is movably sleeved in the middle of the storage box 801, and a defoaming disc 805 located on the inner side of the storage box 801 is fixedly installed at the bottom end of the linkage shaft 804. Bubble-spiking nails 806 are axially and evenly installed on the outer side of the bubble tray 805. The middle part of the bottom end of the bubble tray 805 is connected to the power shaft 9. The top end of the linkage shaft 804 passes through the top end of the storage box 801 and is connected to the middle part of the bottom end of the movable plate 11. When the movable plate 11 is at its lowest point, the bubble-spiking nails 806 are located between the first filter screen 802 and the second filter screen 803. When the movable plate 11 is at its highest point, the bubble-spiking nails 806 are completely stored in the inner cavity of the storage box 801.

[0041] Example: When the movable plate 11 is at its highest point, all the bubble-piercing nails 806 are located inside the storage box 801. When the movable plate 11 is at its lowest point, the mixed foaming agent can pass through the first filter screen 802 and enter the interior of the first filter screen 802 and the second filter screen 803. As the power shaft 9 rotates, the defoaming disc 805 can be driven to rotate synchronously. The bubble-piercing nails 806 then pierce the bubbles in the foaming agent located inside the first filter screen 802 and the second filter screen 803, and then pass through the second filter screen 803 again before being discharged, removing most of the bubbles and completing the defoaming process.

[0042] By reusing the up-and-down displacement process of the movable plate 11, when the movable plate 11 is at its highest point, the device is in the dispensing state and the defoaming work is stopped. When the movable plate 11 is at its lowest point, the device is in the mixing state. At this time, the device can perform the corresponding defoaming operation, which is completed simultaneously with the mixing process. This reduces the impact of excessive bubbles on the dispensing quality when the foaming agent is dispensed, thereby improving the overall dispensing quality.

[0043] Working principle and usage process:

[0044] Preparation stage: First, the foaming agent is injected into the metering tank 2 at the top through the external pipeline. The metering pump inside the metering tank 2 is set with the dosage for each injection according to the process requirements. The external power gearbox (not shown) is meshed with the power gear 10 at the bottom of the device to provide rotational power to the power shaft 9. The control power of the electromagnet 13 is turned on.

[0045] Deployment stage (movable plate at its highest point): This stage is the start or deployment stage of the process. At this time, the electromagnet 13 is de-energized, and the elastic telescopic rod 12 at the bottom of the movable plate 11 is in its longest naturally extended state, pushing the movable plate 11 to its highest point.

[0046] Dispensing port opening: The movable plate 11 at the highest point lifts the sealing plug 4 upward through the bearing 7 and extension rod 6 connected to its top, so that the sealing plug 4 is disengaged from the dispensing port 5, and the dispensing port 5 is in the open state.

[0047] Hybrid component storage: At the same time, the movable plate 11 at the highest point pulls the hybrid rod 143 to a near-vertical "storage" state through multiple connecting rods 146 connected to its outer side, and the hybrid rod 143 retracts and stops working;

[0048] Defoaming component storage: At the same time, the movable plate 11 at the highest point causes the bubble-piercing nails 806 inside the defoaming component 8 to be completely stored in the inner cavity of the storage box 801 (through a linkage mechanism not explicitly shown), and the defoaming function stops.

[0049] Dosing procedure: Start the metering pump in metering tank 2. A fixed amount of foaming agent flows out of metering tank 2, passes through dosing pipe 3, and is smoothly injected into the emulsion matrix in mixing tank 1 through the open dosing port 5. This process is free from mixing and defoaming interference, and the dosing is stable.

[0050] Mixing and defoaming stage (moving plate at lowest point): After the measured amount of foaming agent has been added, the system automatically switches to this stage;

[0051] Movable plate moves down: The control system starts and powers on the electromagnet 13, which generates a strong attraction force, causing the movable plate 11 to overcome the elastic force of the elastic telescopic rod 12, and to be attracted downward and close to the mounting plate 141 of the mixing component 14. At this time, the movable plate 11 moves to the lowest point position.

[0052] Dispensing port closure: The movable plate 11 at the lowest point pushes the sealing plug 4 downward through the extension rod 6, so that the sealing plug 4 tightly blocks the dispensing port 5, achieving a complete seal. This can effectively prevent material splashing during mixing and ensure stable pressure inside the mixing tank 1.

[0053] The mixing assembly unfolds and starts: At the same time, the movable plate 11 at the lowest point is pushed outward through the connecting rod 146, forcing multiple mixing rods 143 to "unfold" outward around the rotating shaft on the mounting plate 141, and to adopt an inclined working posture. At this time, the external power source is started, and the power is transmitted to the power shaft 9 through the power gear 10. The power shaft 9 drives the entire mixing assembly 14 to rotate, and the unfolded mixing rods 143 then perform strong and uniform stirring of the material in the mixing tank 1.

[0054] Defoaming component activation: Simultaneously, the movable plate 11 at the lowest point causes the bubble-piercing nails 806 (via the linkage shaft 804) to descend from the storage box 801 and enter the working area located between the first filter screen 802 and the second filter screen 803. The defoaming component 8 (including the defoaming disc 805) is also driven to rotate by the power shaft 9. During the circulation process, the mixed material is forced to pass through the first filter screen 802, the area of ​​the rotating bubble-piercing nails 806 (where large bubbles are pierced), and the second filter screen 803 in sequence. This process is synchronized with the mixing, realizing the online filtration, breaking, and homogenization of bubbles.

[0055] Completion and Reset Phase: After the mixing and defoaming reaches the set process time, the external power source stops, and the power gear 10 stops rotating;

[0056] System reset: The control system de-energizes the electromagnet 13, the attraction disappears, and the elastic telescopic rod 12 instantly releases its elastic force, pushing the movable plate 11 back to the highest position.

[0057] Status restoration: At this time, the sealing plug 4 is lifted again, the dispensing port 5 is opened; the mixing rod 143 is put back in; the spiked nail 806 is put back in.

[0058] Discharge: Open the discharge port 15 at the bottom of the mixing tank 1 to discharge the foaming agent emulsion that is mixed evenly and has reached the standard of bubble refinement, and send it to the next process. The device will automatically return to the initial state ready for dispensing and wait for the next work cycle.

Claims

1. An emulsion explosive foaming agent dispensing device, comprising a mixing tank (1), characterized in that: A dispensing pipe (3) is fixedly sleeved at the middle of the top of the mixing tank (1). The top of the dispensing pipe (3) is fixedly connected to a metering tank (2). A metering pump is built into the metering tank (2). A defoaming component (8) is installed near the bottom of the inner cavity of the mixing tank (1). A discharge port (15) is fixedly connected to the bottom of the mixing tank (1). A power shaft (9) is fixedly installed at the middle of the bottom of the defoaming component (8). The bottom of the power shaft (9) passes through the bottom of the discharge port (15) and a power gear (10) is fixedly installed. The power gear (10) is connected to an external power gearbox, and the external power gearbox provides rotational power to the power gear (10). A movable plate (11) is provided inside the mixing component (14). A dispensing port (5) is fixedly connected to the bottom of the dispensing pipe (3). The bottom of the dispensing port (5) is connected to the inside of the mixing tank (1). The vertical displacement of the movable plate (11) acts on the feeding pipe (3) to open and close the feeding port (5) to complete the feeding, and acts on the mixing component (14) to realize the storage and expansion of the mixing component (14) to achieve mixing, and acts on the defoaming component (8) to filter and defoam the foaming agent.

2. The emulsion explosive foaming agent dispensing device according to claim 1, characterized in that: An electromagnet (13) is fixedly installed on the left side of the bottom end of the movable plate (11), and an elastic telescopic rod (12) is fixedly installed on the right side of the bottom end of the movable plate (11). The bottom end of the elastic telescopic rod (12) is connected to the mixing component (14).

3. The emulsion explosive foaming agent dispensing device according to claim 2, characterized in that: The mixing component (14) includes a mounting plate (141), on which a mixing rod (143) is rotatably mounted at equal intervals along the outer side. A through hole (142) is provided in the middle of the mounting plate (141), and the bottom end of the elastic telescopic rod (12) is connected to the top end of the mounting plate (141).

4. The emulsion explosive foaming agent dispensing device according to claim 3, characterized in that: A second fixing seat (145) is fixedly installed in the middle of the inner side of the mixing rod (143). The end of the second fixing seat (145) away from the mixing rod (143) is movably connected to the connecting rod (146) through a rotating shaft. The end of the connecting rod (146) away from the first fixing seat (144) is movably connected to the second fixing seat (145) through a rotating shaft. The second fixing seats (145) are axially and equally spaced on the outer side of the movable plate (11) and connected to the movable plate (11). When the electromagnet (13) and the mounting plate (141) are attracted to each other, the movable plate (11) is at the lowest point.

5. The emulsion explosive foaming agent dispensing device according to claim 1, characterized in that: The inside of the delivery tube (3) is provided with a sealing plug (4), and the bottom end of the sealing plug (4) is fixedly connected to an extension rod (6). The bottom end of the extension rod (6) passes through the bottom end of the delivery port (5) and is equipped with a bearing (7). The bottom end of the bearing (7) is connected to the middle of the top of the movable plate (11).

6. The emulsion explosive foaming agent dispensing device according to claim 5, characterized in that: When the movable plate (11) is at its lowest point, the sealing plug (4) completely seals the inlet (5). When the movable plate (11) is not at its lowest point, the fluid flows out through the gap between the inlet (5) and the extension rod (6).

7. The emulsion explosive foaming agent dispensing device according to claim 1, characterized in that: The defoaming component (8) includes a storage box (801), on which a first filter screen (802) is fixedly installed. The defoaming component (8) also includes a second filter screen (803) located below the first filter screen (802). The outer sides of the first filter screen (802) and the second filter screen (803) are fixedly connected to the inner side of the mixing tank (1).

8. The emulsion explosive foaming agent dispensing device according to claim 7, characterized in that: The storage box (801) is movably connected to a linkage shaft (804) in the middle. The bottom end of the linkage shaft (804) is fixedly installed with a defoaming plate (805) located on the inner side of the storage box (801). The outer side of the defoaming plate (805) is axially and equally spaced with bubble-piercing nails (806). The middle part of the bottom end of the defoaming plate (805) is connected to the power shaft (9). The top end of the linkage shaft (804) passes through the top end of the storage box (801) and is connected to the middle part of the bottom end of the movable plate (11).

9. The emulsion explosive foaming agent dispensing device according to claim 8, characterized in that: When the movable plate (11) is at its lowest point, the bubble pin (806) is located between the first filter screen (802) and the second filter screen (803). When the movable plate (11) is at its highest point, the bubble pin (806) is completely stored in the inner cavity of the storage box (801).

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