Powdered emulsion explosive pre-assembly device

Abstract

The utility model discloses a powdered emulsion explosive prefabrication equipment belongs to explosive production related technical field, including: base, the base top is fixed with drying tower, the emulsion delivery pipe bottom is fixed with high pressure nozzle, is equipped with the sleeve on the emulsion delivery pipe through bearing. Thus, by setting up sleeve, horizontal plate and scraper driven by rotating mechanism at the top of drying tower, scraper can rotate with sleeve continuously and contact with drying tower inner wall closely, can clean the attached undried mist drop and initial incrustation in real time, avoid incrustation accumulation thickening, and the arc screen cloth of setting up in base inside cooperates with finished product room, annular recovery room, can carry out grading treatment to the material after drying, and the finished product particle of meeting granularity requirement can pass through screen cloth and fall into finished product room, and the incrustation under the cleaning of big particle, hardening material and scraper is intercepted, is convenient for centralized processing or rework utilization, improves raw material utilization, reduces production cost.

Description

Technical Field

[0001] This utility model relates to a prefabrication equipment for powdered emulsion explosives, belonging to the technical field of explosives production. Background Technology

[0002] As an important category of industrial explosives, powdered emulsion explosives are widely used in mining, engineering blasting and other fields. In their prefabrication process, the spray drying tower is responsible for converting the emulsion into powder.

[0003] During the emulsion atomization drying stage, some insufficiently dried droplets easily adhere to the inner wall of the drying tower due to the electrostatic adsorption properties of components such as ammonium nitrate. In addition, the temperature gradient in the production environment of powdered emulsion explosives causes these deposits to accumulate continuously, gradually forming thick scale. Scale not only significantly reduces the effective drying space inside the tower, obstructing hot air circulation and reducing drying efficiency, but also causes the scale to detach naturally and mix into the product during continuous accumulation. This results in uneven explosive particle size, increased impurity content, and affects key indicators such as detonation performance, leading to unqualified batches of products, increased rework costs, and waste of raw materials. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a pre-fabrication equipment for powdered emulsion explosives, which avoids excessive scaling on the tower wall and prevents scale from falling off and mixing into the product during the drying process, thus preventing uneven particle size.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a pre-fabrication equipment for powdered emulsion explosives, characterized in that it includes: a base, a drying tower fixed on the top of the base, and an emulsion conveying pipe extending through the top of the drying tower, a high-pressure nozzle fixed at the bottom of the emulsion conveying pipe, a hot air inlet on the side of the top of the drying tower, a rotating sleeve sleeved on the emulsion conveying pipe through a bearing, and a horizontal plate fixed on the rotating sleeve, with scrapers fixed at both ends of the horizontal plate;

[0006] The top of the drying tower is equipped with a rotating mechanism for driving the rotating sleeve to rotate;

[0007] The base has a vertical rod inside, and an arc-shaped screen is fixed to the top of the vertical rod.

[0008] Preferably, a rubber pad is fixed to the side of the scraper, and the rubber pad is in contact with the inner wall of the drying tower.

[0009] Preferably, the rotating mechanism includes a motor, which is mounted on the top of the drying tower, and a gear is provided at the output end of the motor. A second gear is fitted on the rotating sleeve, and the second gear meshes with the first gear.

[0010] Preferably, the base has a finished product chamber at the midpoint and an annular recycling chamber inside. The base also has a cavity inside, through which the vertical rod slides and connects with the cavity, and a drive mechanism is also provided inside the cavity.

[0011] Preferably, the diameter of the arc-shaped screen is larger than the inner diameter of the finished product chamber.

[0012] Preferably, the driving mechanism includes a turntable, which is installed on the inner wall of the cavity. A second motor is fixed to the outside of the base, and the output end of the second motor is connected to the turntable. An eccentric shaft is provided on the side of the turntable, and the eccentric shaft is connected to the bottom of the vertical rod through a connecting rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] By installing a rotating sleeve, horizontal plate, and scraper at the top of the drying tower driven by a rotating mechanism, the scraper can continuously rotate with the rotating sleeve and make close contact with the inner wall of the drying tower. It can clean the attached undried droplets and initial scale in real time, avoiding the accumulation and thickening of scale. In addition, the arc-shaped screen installed inside the base works in conjunction with the finished product chamber and the annular recovery chamber to classify the dried material. Finished particles that meet the particle size requirements can fall into the finished product chamber through the screen, while large particles that are not completely dried, caking material, and scale cleaned by the scraper are intercepted, which facilitates centralized processing or rework, improves the utilization rate of raw materials, and reduces production costs.

[0015] The drive mechanism drives the vertical rod and the arc-shaped screen to make vertical reciprocating motion through the eccentric shaft and connecting rod. This not only avoids the accumulation and blockage of particles on the screen surface and ensures stable separation efficiency, but also promotes the sliding of unqualified materials into the recovery chamber through vibration, so that the intercepted unqualified materials eventually fall into the recovery chamber. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a frontal cross-sectional view of the present invention.

[0018] Figure 2 This is a cross-sectional view of the base structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the rotating sleeve and horizontal plate structure of this utility model.

[0020] In the diagram: 1. Base, 2. Drying tower, 3. Emulsion conveying pipe, 4. High-pressure nozzle, 5. Hot air inlet, 6. Rotating sleeve, 7. Horizontal plate, 8. Scraper, 9. Rotating mechanism, 901. Motor 1, 902. Gear 1, 903. Gear 2, 10. Finished product chamber, 11. Recycling chamber, 12. Vertical rod, 13. Arc screen, 14. Drive mechanism, 1401. Turntable, 1402. Motor 2, 1403. Eccentric shaft, 1404. Connecting rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 This utility model provides a technical solution:

[0023] A prefabrication equipment for powdered emulsion explosives includes: a base 1, a drying tower 2 fixed on the top of the base 1, an emulsion conveying pipe 3 passing through the top of the drying tower 2, a high-pressure nozzle 4 fixed at the bottom of the emulsion conveying pipe 3, a hot air inlet 5 on the side of the top of the drying tower 2, a rotating sleeve 6 sleeved on the emulsion conveying pipe 3 through a bearing, a horizontal plate 7 fixed on the rotating sleeve 6, and scrapers 8 fixed at both ends of the horizontal plate 7.

[0024] The top of the drying tower 2 is equipped with a rotating mechanism 9 for driving the rotating sleeve 6 to rotate;

[0025] The base 1 has a vertical rod 12 inside, and an arc-shaped screen 13 is fixed to the top of the vertical rod 12.

[0026] Furthermore, the base 1 serves as the foundation of the equipment, with the drying tower 2 fixed on top, providing a closed space for the drying of the emulsion. The emulsion conveying pipe 3 transports the emulsion into the tower, and the high-pressure nozzle 4 at the bottom atomizes the emulsion into droplets. The hot air inlet 5 is used to introduce high-temperature hot air, which comes into contact with the droplets to complete the drying process. The rotating mechanism 9 drives the rotating sleeve 6 to rotate. The rotating sleeve 6 is sleeved on the emulsion conveying pipe 3 through bearings. The horizontal plate 7 on the rotating sleeve 6 drives the scrapers 8 at both ends to rotate synchronously. The scrapers 8 contact the inner wall of the drying tower 2 to achieve real-time cleaning. The vertical rod 12 inside the base 1 supports the arc-shaped screen 13 at the top, which screens the dried material.

[0027] In this embodiment: a rubber pad is fixed to the side of the scraper 8, and the rubber pad is in contact with the inner wall of the drying tower 2.

[0028] Furthermore, the rubber pad on the side of the scraper 8 is directly attached to the inner wall of the drying tower 2. During the rotation cleaning, it can not only enhance the scraping effect on the scale on the tower wall, but also avoid wear caused by hard contact between the scraper 8 and the tower wall, thus extending the service life of both, while reducing noise and vibration during the cleaning process.

[0029] In this embodiment: the rotating mechanism 9 includes a motor 901, which is installed on the top of the drying tower 2, and a gear 902 is provided at the output end of the motor 901. A gear 903 is sleeved on the rotating sleeve 6, and the gear 903 meshes with the gear 902.

[0030] Furthermore, motor 901 drives gear 902 to rotate, and gear 902 meshes with gear 903 to drive gear 903 and rotating sleeve 6 to rotate, thereby causing the horizontal plate 7 and scraper 8 to rotate synchronously.

[0031] In this embodiment: a finished product chamber 10 is provided at the midpoint inside the base 1, and an annular recycling chamber 11 is also provided inside the base 1. A cavity is also provided inside the base 1, and a vertical rod 12 passes through the cavity and is slidably connected to it. A drive mechanism 14 is also provided inside the cavity.

[0032] Furthermore, the finished product chamber 10 is located at the midpoint inside the base 1 and is used to collect qualified powdered finished products after being screened by the arc-shaped screen 13. The annular recycling chamber 11 surrounds the finished product chamber 10 and is used to collect large particles, caking materials, and scale cleaned by the scraper 8 that are intercepted by the screen. The cavity inside the base 1 provides space for the vertical movement of the vertical rod 12. The vertical rod 12 is slidably connected to the cavity and can move up and down under the drive mechanism 14, thereby driving the arc-shaped screen 13 to move.

[0033] In this embodiment: the diameter of the arc-shaped screen 13 is larger than the inner diameter of the finished product chamber 10.

[0034] Furthermore, the diameter of the arc-shaped screen 13 is larger than the inner diameter of the finished product chamber 10, ensuring that the intercepted unqualified materials can slide smoothly into the annular recycling chamber 11, thus preventing unqualified materials from being mixed into the finished product chamber 10.

[0035] In this embodiment: the drive mechanism 14 includes a turntable 1401, which is installed on the inner wall of the cavity. A second motor 1402 is fixed to the outside of the base 1, and the output end of the second motor 1402 is connected to the turntable 1401. An eccentric shaft 1403 is provided on the side of the turntable 1401, and the eccentric shaft 1403 is connected to the bottom of the vertical rod 12 through a connecting rod 1404.

[0036] Furthermore, the turntable 1401 is rotated by the motor 1402, and the eccentric shaft 1403 on the side of the turntable 1401 moves in a circular motion. This motion is converted into the vertical reciprocating motion of the vertical rod 12 by the connecting rod 1404, which in turn drives the arc screen 13 to vibrate up and down. This motion can prevent material from clogging the screen and ensure continuous and efficient screening, while also promoting the sliding of unqualified materials into the recovery chamber 11.

[0037] The workflow of this embodiment is as follows: The emulsion is transported to the drying tower 2 through the emulsion delivery pipe 3, and atomized into fine droplets through the high-pressure nozzle 4 at the bottom; at the same time, high-temperature hot air enters the tower from the hot air inlet 5 on the side of the top of the drying tower 2, and comes into full contact with the droplets. Through heat exchange, the droplets are quickly dehydrated and form powder particles. During the drying process, the motor 901 drives the gear 902 to rotate. The gear 902 meshes with the gear 903 on the rotating sleeve 6, causing the rotating sleeve 6, the horizontal plate 7, and the scrapers 8 at both ends to rotate synchronously. The rubber pads on the sides of the scrapers 8 are in close contact with the inner wall of the drying tower 2, scraping off the attached undried droplets and initial scale in real time, preventing scale accumulation or detachment. The finished product is mixed in, and the dried powdered material falls onto the arc-shaped screen 13 at the top of the base 1. Qualified particles that meet the particle size requirements fall into the finished product chamber 10 in the center of the base 1 through the arc-shaped screen 13. Large particles that are not completely dried, caking material, and scale cleaned by the scraper 8 are intercepted by the arc-shaped screen 13. After the operation is completed, the motor 1402 is started to drive the turntable 1401 to rotate. The eccentric shaft 1403 on the turntable pulls the vertical rod 12 to make vertical reciprocating motion through the connecting rod 1404, which in turn drives the arc-shaped screen 13 to vibrate up and down to avoid particles clogging the screen. The unqualified material that is intercepted slides down into the annular recovery chamber 11 under the action of vibration, realizing the separation and recovery of finished product and unqualified material.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pre-fabrication device for powdered emulsion explosives, characterized in that, include: The base has a drying tower fixed on top, and an emulsion conveying pipe is installed through the top of the drying tower. A high-pressure nozzle is fixed at the bottom of the emulsion conveying pipe. A hot air inlet is provided on the side of the top of the drying tower. A rotating sleeve is sleeved on the emulsion conveying pipe through a bearing, and a horizontal plate is fixed on the rotating sleeve. Scrapers are fixed at both ends of the horizontal plate. The top of the drying tower is equipped with a rotating mechanism for driving the rotating sleeve to rotate; The base has a vertical rod inside, and an arc-shaped screen is fixed to the top of the vertical rod.

2. The pre-fabrication equipment for powdered emulsion explosives according to claim 1, characterized in that, A rubber pad is fixed to the side of the scraper, and the rubber pad is in contact with the inner wall of the drying tower.

3. The pre-fabrication equipment for powdered emulsion explosives according to claim 1, characterized in that, The rotating mechanism includes a motor, which is installed on the top of the drying tower. A gear is provided at the output end of the motor. A second gear is fitted on the rotating sleeve and meshes with the first gear.

4. The pre-fabrication equipment for powdered emulsion explosives according to claim 1, characterized in that, The base has a finished product chamber at its midpoint and an annular recycling chamber. The base also has a cavity, through which the vertical rod slides. A drive mechanism is also installed inside the cavity.

5. The pre-fabrication equipment for powdered emulsion explosives according to claim 1, characterized in that, The diameter of the arc-shaped screen is larger than the inner diameter of the finished product chamber.

6. The pre-fabrication equipment for powdered emulsion explosives according to claim 4, characterized in that, The driving mechanism includes a turntable, which is installed on the inner wall of the cavity. A second motor is fixed to the outside of the base, and the output end of the second motor is connected to the turntable. An eccentric shaft is provided on the side of the turntable, and the eccentric shaft is connected to the bottom of the vertical rod through a connecting rod.

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