Emulsion explosive stirring device

Abstract

The utility model relates to emulsion explosive production technical field and disclose emulsion explosive stirring device, including stirring container, the upper surface of stirring container is fixed with hopper, the inside of stirring container is up and down distribution activity and is provided with upper stirring vane and lower stirring vane, one end of lower stirring vane is fixed with drive mechanism, one end surface of upper stirring vane is fixed with driven gear, one end surface of lower stirring vane is fixed with driving gear. The utility model avoids partial concentration deviation and traditional pumping flow shortage, enhances the stability of sensitization reaction, effectively eliminates temperature gradient, promotes the thermal distribution uniformity, simplifies technological process, improves the reliability and automation level of overall system.

Description

Technical Field

[0001] This utility model relates to the field of emulsion explosive production technology, and in particular to an emulsion explosive stirring device. Background Technology

[0002] Currently, in the production of emulsion explosives, to achieve good sensitization effects, a latex matrix, accelerator, and foaming agent are generally added to the static sensitization device. However, the sensitization effect does not always meet quality requirements. The degree of mixing between the accelerator and the latex matrix, as well as the uniformity of the temperature distribution of the latex matrix, are important factors affecting the sensitization effect. If the accelerator is added unevenly or the temperature distribution of the latex matrix is ​​uneven, it can easily lead to unstable sensitization effects, affecting product quality and even posing safety hazards.

[0003] In traditional methods, the latex matrix in the transfer hopper is directly mixed with the accelerator via a one-way valve into the static sensitization device. This method has the following drawbacks:

[0004] On the one hand, the accelerator is prone to local concentrations that are too high or too low, resulting in uneven sensitization; on the other hand, the uneven temperature distribution inside the latex matrix can easily generate temperature gradients, affecting the overall sensitization effect.

[0005] To address the aforementioned issues, there is an urgent need for a transfer hopper mixing system that is structurally sound and safe, provides uniform mixing of accelerators, effectively improves temperature distribution, and enhances overall sensitization performance. To this end, an emulsion explosive mixing device was designed. Utility Model Content

[0006] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to propose a stirring device for emulsion explosives, which avoids localized concentration deviations and insufficient flow rates of traditional pumps, enhances the stability of the sensitization reaction, effectively eliminates temperature gradients, improves the uniformity of heat distribution, simplifies the process flow, and improves the overall system reliability and automation level.

[0007] The emulsion explosive stirring device according to this utility model includes a stirring container, a hopper fixed on the upper surface of the stirring container, and upper and lower stirring blades movably arranged vertically inside the stirring container. A driving mechanism is fixed to one end of the lower stirring blade, a driven gear is fixed to one end surface of the upper stirring blade, and a driving gear is fixed to one end surface of the lower stirring blade.

[0008] The upper stirring blade has an internally extending upper injection channel. The upper stirring blade includes an upper blade body, and upper stirring shafts are fixed at both ends of the upper blade body. Multiple upper spray holes are opened on the side wall of the upper blade body, and the multiple upper spray holes are all connected to the upper injection channel.

[0009] The lower stirring blade has a through-hole for a lower material injection channel. The lower stirring blade includes a lower blade body, and a lower stirring shaft is fixed at both ends of the lower blade body. Multiple lower spray holes are opened on the side wall of the lower blade body, and the multiple lower spray holes are all connected to the lower material injection channel.

[0010] Preferably, one side of the stirring container is open and a mounting plate is fixed thereon. The side wall of the stirring container and the mounting plate are fitted with mounting holes, and the upper stirring blade and the lower stirring blade are respectively assembled in the mounting holes at the same height.

[0011] Preferably, bearing seats are fitted onto the two end surfaces of the upper and lower stirring blades extending out of the assembly hole, and the bearing seats are fixed to the side wall of the stirring container.

[0012] Preferably, the drive mechanism includes a drive motor, a reducer, and a coupling, wherein the coupling is fixedly connected to the lower stirring shaft.

[0013] Preferably, both the upper blade body and the lower blade body are S-shaped plate structures.

[0014] Preferably, a flange is fitted at the connection between the mixing container and the hopper.

[0015] The beneficial effects of this utility model are:

[0016] ① Hollow stirring shaft directional injection structure:

[0017] This device employs a hollow stirring shaft design with multiple spray holes along the radial direction of the shaft, allowing the accelerator to be uniformly injected into the latex matrix from the core. Compared to the traditional method of injecting via a screw pump into a delivery pipeline, this structure significantly improves the uniformity of accelerator distribution in the matrix, avoids localized concentration deviations and insufficient flow rates of traditional pumps, and enhances the stability of the sensitization reaction.

[0018] ② Trapezoidal cross-section stirring blades optimize substrate flow and heat exchange:

[0019] The stirring blades in the device have a trapezoidal cross-section structure, divided into upper and lower layers. They rotate around the central axis to generate multi-directional shearing and vertical and horizontal circulating flow, which promotes forced convection of the latex matrix in the hopper, effectively eliminates temperature gradients, improves heat distribution uniformity, and provides a stable temperature control environment for subsequent sensitization.

[0020] ③ Integrated operation of mixing and accelerator injection:

[0021] By integrating the accelerator injection pipeline into the stirring shaft, stirring and injection can be carried out simultaneously, simplifying the process, reducing equipment interfaces and pipeline connections, reducing the risk of leakage and blockage, and improving the overall system reliability and automation level.

[0022] ④ Compact structure and high safety sealing performance, suitable for industrial production needs:

[0023] This device adopts a modular design, which makes it easy to install in existing emulsion explosive production systems. Key parts are equipped with sealing structures and safety protection devices to ensure stable operation of the device in high-temperature, high-shear and other working environments and eliminate safety hazards. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the emulsion explosive stirring device proposed in this utility model.

[0025] Figure 2 This is a schematic diagram of the internal structure of the stirring container of the emulsion explosive stirring device proposed in this utility model.

[0026] Figure 3 This is a schematic diagram of the assembly structure of the upper and lower stirring blades of the emulsion explosive stirring device proposed in this utility model.

[0027] Figure 4 This is a schematic diagram showing the spatial positions of the upper and lower stirring blades of the emulsion explosive stirring device proposed in this utility model.

[0028] In the diagram: 1. Mixing container; 11. Assembly plate; 12. Assembly hole; 2. Hopper; 3. Upper mixing blade; 31. Upper feeding channel; 32. Upper blade body; 33. Upper mixing shaft; 34. Upper spray hole; 4. Lower mixing blade; 41. Lower feeding channel; 42. Lower blade body; 43. Lower mixing shaft; 44. Lower spray hole; 5. Drive mechanism; 6. Drive gear; 7. Driven gear; 8. Bearing seat; 9. Flange. Detailed Implementation

[0029] Reference Figure 1-4 An emulsion explosive mixing device includes a mixing container 1, a hopper 2 fixed on the upper surface of the mixing container 1, and upper mixing blades 3 and lower mixing blades 4 movably arranged vertically inside the mixing container 1. A drive mechanism 5 is fixed to one end of the lower mixing blade 4, a driven gear 7 is fixed to one end of the surface of the upper mixing blade 3, and a drive gear 6 is fixed to one end of the surface of the lower mixing blade 4.

[0030] The upper stirring blade 3 has an upper injection channel 31 that runs through its interior. The upper stirring blade 3 includes an upper blade body 32. An upper stirring shaft 33 is fixed at both ends of the upper blade body 32. Multiple upper spray holes 34 are opened on the side wall of the upper blade body 32. All of the multiple upper spray holes 34 are connected to the upper injection channel 31.

[0031] The lower stirring blade 4 has a through-hole for a lower injection channel 41. The lower stirring blade 4 includes a lower blade body 42. The two ends of the lower blade body 42 are fixed with a lower stirring shaft 43. The side wall of the lower blade body 42 has multiple lower spray holes 44, and the multiple lower spray holes 44 are all connected to the lower injection channel 41.

[0032] The upper injection channel 31 is opened along the center of the blade body and the two ends of the stirring shaft. The two ends of the stirring blade are opened to form a channel. The opening route of the lower injection through hole is the same.

[0033] The upper stirring blade 3 and the lower stirring blade 4 are connected to a material guide hose at the ends away from the assembly drive mechanism 5. The material guide hose is fixedly connected to the injection channel. The other end of the injection channel is sealed with screws and gaskets. The end of the lower stirring blade 4 with screw seal is fixed to the coupling of the drive mechanism 5. During cleaning and maintenance, the screws at the ends of the upper stirring blade 3 and the lower stirring blade 4 can be removed to flush the inside of the injection channel.

[0034] When performing injection operations, a plunger pump can be used to inject material into the hose, which is then guided through the hose and injection channel and finally discharged from the nozzle.

[0035] One side of the mixing container 1 is open and is fixed with an assembly plate 11. The assembly plate 11 is fixed to the mixing container 1 by assembly bolts. The side wall of the mixing container 1 and the assembly plate 11 is provided with an assembly hole 12. The upper mixing blade 3 and the lower mixing blade 4 are respectively assembled in the assembly hole 12 at the same height.

[0036] Bearing seats 8 are fitted onto the two ends of the upper stirring blade 3 and the lower stirring blade 4 extending out of the mounting hole 12, and the bearing seats 8 are fixed to the side wall of the stirring container 1.

[0037] The drive mechanism 5 includes a drive motor, a reducer and a coupling, and the coupling is fixedly connected to the lower stirring shaft 43.

[0038] Both the upper blade body 32 and the lower blade body 42 are S-shaped plate structures; please refer to [reference needed]. Figure 4 .

[0039] A flange 9 is fitted at the connection between the mixing container 1 and the hopper 2.

[0040] When this device is in use, during operation, the conveyor belt first adds the latex matrix into the hopper 2. The lower stirring shaft 43 is driven to rotate by a motor. Specifically, the drive mechanism 5 drives the lower stirring shaft 43 to rotate, and the rotation of the lower stirring shaft 43 drives the drive gear 6 to rotate synchronously. The drive gear 6 and the driven gear 7 mesh and transmit power, and the driven gear 7 is fixed on the surface of the upper stirring shaft 33. This drives the upper stirring shaft 33 to rotate, and finally realizes that the upper stirring blade 3 and the lower stirring blade 4 rotate synchronously in opposite directions, thereby achieving the mixing of materials.

[0041] During the rotation of the stirring shaft, the blades attached to the stirring shaft push the latex matrix to form a rotating flow and a vertical circulation. Due to the transmission gears arranged above and below, the upper and lower stirring blades 4 rotate clockwise and counterclockwise respectively, which significantly enhances the convection and mixing effect inside the hopper 2, thereby breaking the temperature gradient in the matrix and achieving uniformity of the thermal field.

[0042] Meanwhile, the accelerator is stably injected into the interior of the stirring shaft through a plunger pump connected to the outside of the stirring shaft, and is uniformly released into the surrounding matrix through radial nozzles as the stirring shaft rotates. Since this process is carried out synchronously in the stirring flow field, the accelerator can be fully mixed with the latex matrix in a short time, avoiding the problem of local high or low concentration that exists in the traditional injection method.

Claims

1. An emulsion explosive stirring device, characterized in that: The device includes a mixing container, a hopper fixed to its upper surface, and upper and lower mixing blades movably arranged vertically inside the container. A drive mechanism is fixed to one end of the lower mixing blade, a driven gear is fixed to one end of the surface of the upper mixing blade, and a driving gear is fixed to one end of the surface of the lower mixing blade. The upper stirring blade has an internally extending upper injection channel. The upper stirring blade includes an upper blade body, and upper stirring shafts are fixed at both ends of the upper blade body. Multiple upper spray holes are opened on the side wall of the upper blade body, and the multiple upper spray holes are all connected to the upper injection channel. The lower stirring blade has a through-hole for a lower material injection channel. The lower stirring blade includes a lower blade body, and a lower stirring shaft is fixed at both ends of the lower blade body. Multiple lower spray holes are opened on the side wall of the lower blade body, and the multiple lower spray holes are all connected to the lower material injection channel.

2. The emulsion explosive stirring device according to claim 1, characterized in that: One side of the mixing container is open and has an assembly plate fixed thereon. The mixing container and the side wall of the assembly plate are fitted with an assembly hole. The upper mixing blade and the lower mixing blade are respectively assembled in the assembly hole at the same height.

3. The emulsion explosive stirring device according to claim 2, characterized in that: Bearing seats are fitted onto the two ends of the upper and lower stirring blades that extend out of the assembly hole, and the bearing seats are fixed to the side wall of the stirring container.

4. The emulsion explosive stirring device according to claim 1, characterized in that: The drive mechanism includes a drive motor, a reducer, and a coupling, with the coupling fixedly connected to the lower stirring shaft.

5. The emulsion explosive stirring device according to claim 1, characterized in that: Both the upper blade body and the lower blade body are S-shaped plate structures.

6. The emulsion explosive stirring device according to claim 1, characterized in that: A flange is fitted at the connection between the mixing container and the hopper.

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