Solid ammonium nitrate crushing device

Abstract

The utility model relates to a solid ammonium nitrate crushing device which comprises a first crushing device and a second crushing device, and the first crushing device comprises a first rack, a first feed port, a first driving motor, a spiked roller and a first discharge port; the second crushing device comprises a second rack, a second feeding hole, a second driving motor, a spiral roller and a second discharging hole; wherein the second crushing device is arranged below the first crushing device, the first feeding hole is formed in the upper part of the first rack, the first driving motor is connected with the spiked roller, the first discharging hole is formed in the lower part of the first rack and corresponds to the second discharging hole in position, and the second driving motor is connected with the spiral roller; and solid ammonium nitrate falls into the first crushing device to be crushed and then enters the second crushing device from the first discharge port to be further crushed. According to the utility model, the double-layer crushing device is arranged to crush solid ammonium nitrate, so that the crushed ammonium nitrate powder is uniform in size and the fineness reaches the standard, and the ammonium nitrate crushing efficiency and quality are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding equipment, and more specifically relates to a solid ammonium nitrate pulverizing device. Background Technology

[0002] Emulsion explosives are a new product developed in the 1970s. They have excellent water resistance, good explosive performance, low mechanical sensitivity, and good safety, making them popular among blasting operators. The main component of emulsion explosives is ammonium nitrate. Due to geographical and other limitations, most companies use powdered ammonium nitrate, which is prone to agglomeration and forms lumps. Before being dissolved in water, it needs to be crushed. The size of the crushed particles directly affects the quality of the emulsion explosive. Moreover, there are various crushing equipment, but existing equipment is inefficient at crushing ammonium nitrate, resulting in uneven crushing, insufficient fineness, and the presence of iron filings and other substances in the crushed ammonium nitrate, which affects both product quality and production safety when incorporated into the explosive. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] The present invention aims to solve the technical problem of how to improve the grinding efficiency of ammonium nitrate.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, one aspect of this utility model proposes a solid ammonium nitrate pulverizing device, comprising a first pulverizing device and a second pulverizing device. The first pulverizing device includes a first frame, a first feed inlet, a first drive motor, a toothed roller, and a first discharge outlet; the second pulverizing device includes a second frame, a second feed inlet, a second drive motor, a spiral roller, and a second discharge outlet; wherein:

[0007] The second crushing device is located below the first crushing device. The first feed inlet is located on the upper part of the first frame. The first drive motor is connected to the toothed roller. The first discharge outlet is located on the lower part of the first frame, corresponding to the position of the second feed inlet. The second drive motor is connected to the spiral roller. After solid ammonium nitrate falls into the first crushing device for crushing, it enters the second crushing device from the first discharge outlet for further crushing.

[0008] According to a preferred embodiment of the present invention, the toothed roller includes a first toothed roller and a second toothed roller, the first toothed roller and the second toothed roller are arranged in parallel, and a baffle is provided between them, with both ends of the baffle fixedly connected to the first frame.

[0009] According to a preferred embodiment of the present invention, protruding teeth are fixedly provided on both sides of the baffle, which are alternately arranged with the wolf teeth of the wolf tooth roller.

[0010] According to a preferred embodiment of the present invention, the spiral roller includes a rotating shaft and cooling blades. The rotating shaft is a hollow pipe, and the cooling blades are provided with hollow chambers. The rotating shaft is fixedly connected to the cooling blades, and both ends of the rotating shaft are rotatably connected to a water pump. The water pump pumps cooling water into the rotating shaft for circulation.

[0011] According to a preferred embodiment of the present invention, the spiral roller further includes grinding blades, which are fixedly disposed on the upper surface of the cooling blades, and the thickness of the grinding blades is less than that of the cooling blades.

[0012] According to a preferred embodiment of the present invention, the spiral roller includes a first spiral roller and a second spiral roller, which are arranged in parallel.

[0013] According to a preferred embodiment of the present invention, a buffer rod is provided inside the first feed inlet, and the buffer rod is located above the toothed roller.

[0014] According to a preferred embodiment of the present invention, a safety bracket is fixedly installed above the first crushing device.

[0015] According to a preferred embodiment of the present invention, the first crushing device and the second crushing device are made of cast steel.

[0016] According to a preferred embodiment of the present invention, the bottom of the second frame is detachable.

[0017] (III) Beneficial Effects

[0018] This invention features a double-layer crushing device and a buffer rod. Solid ammonium nitrate is initially crushed by the buffer rod, and the first crushing device further crushes the solid ammonium nitrate. After crushing, the powder falls into the lower second crushing device for further grinding. Cooling is performed during the crushing process to ensure that the crushed ammonium nitrate powder is uniform in size and meets the fineness standard, thereby improving the crushing efficiency and quality of ammonium nitrate. Attached Figure Description

[0019] Figure 1 This is a front view of a solid ammonium nitrate pulverizing device according to an embodiment of this utility model;

[0020] Figure 2 This is a side cross-sectional view of a solid ammonium nitrate pulverizing device according to an embodiment of the present invention;

[0021] Figure 3 yes Figure 2 A top view of the first crushing device along the AA direction;

[0022] Figure 4 This is a front view of the second pulverizing device according to an embodiment of the present invention;

[0023] Figure 5 yes Figure 4 A top view of a partial structure of part C of the second crushing device.

[0024] Explanation of reference numerals in the attached drawings: 1. First frame; 2. First feed inlet; 3. Toothed roller; 31. First toothed roller; 32. Second toothed roller; 4. First discharge outlet; 5. Second frame; 6. Second feed inlet; 7. Spiral roller; 71. First spiral roller; 72. Second spiral roller; 8. Baffle; 9. Convex tooth; 10. Toothed roller; 11. Rotating shaft; 12. Cooling blade; 13. Cooling water; 14. Grinding blade; 15. Buffer rod; 16. Safety bracket; 17. First drive motor; 18. Second drive motor; 19. Water pump; 20. Second discharge outlet. Detailed Implementation

[0025] In the description of specific embodiments, detailed descriptions of structures, performance, effects, or other features are provided to enable those skilled in the art to fully understand the embodiments. However, this does not preclude those skilled in the art from implementing this utility model under specific circumstances with technical solutions that do not contain the aforementioned structures, performance, effects, or other features.

[0026] The same reference numerals in the accompanying drawings denote the same or similar elements, components, or parts; therefore, repeated descriptions of the same or similar components or parts may be omitted below. It should also be understood that although qualifiers such as first, second, third, etc., indicating numbering, may be used herein to describe various components or parts, these components or parts should not be limited by these qualifiers. That is, these qualifiers are only used to distinguish one from another. For example, a first component may also be referred to as a second component, without departing from the essential technical solution of this utility model. Furthermore, the terms "and / or" and "and / or" refer to all combinations including any one or more of the listed items.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0028] Figure 1 This is a front view of a solid ammonium nitrate pulverizing device according to an embodiment of this utility model. Figure 1 As shown, the solid ammonium nitrate pulverizing device includes a first pulverizing device and a second pulverizing device. The first pulverizing device includes a first frame 1, a first feed inlet 2, a first drive motor 17, a toothed roller 3, and a first discharge outlet 4. The second pulverizing device includes a second frame 5, a second feed inlet 6, a second drive motor 18, a spiral roller 7, and a second discharge outlet 20. Wherein:

[0029] The second crushing device is located below the first crushing device. The first feed inlet 2 is located on the upper part of the first frame 1. The toothed roller 3 is located inside the first frame 1. The first drive motor 17 is installed on the right side of the first frame 1 and connected to the toothed roller 3 to drive the toothed roller 3 to rotate. The first discharge outlet 4 is located at the lower part of the first frame 1, corresponding to the position of the second discharge outlet 20. The spiral roller 7 is located inside the second frame 5. The second drive motor 18 is installed on the right side of the second frame 5 and connected to the spiral roller 7 to drive the spiral roller 7 to rotate. After solid ammonium nitrate falls into the first crushing device for crushing, it enters the second feed inlet 6 of the second crushing device from the first discharge outlet 4 for further crushing.

[0030] Figure 2 This is a side cross-sectional view of a solid ammonium nitrate pulverizing device according to an embodiment of the present invention. Figure 3 yes Figure 2 A top view of the first crushing device along the AA direction, combined with... Figure 2 and Figure 3 The wolf tooth roller 3 includes a first wolf tooth roller 31 and a second wolf tooth roller 32. The first wolf tooth roller 31 and the second wolf tooth roller 32 are arranged in parallel, and a baffle 8 is provided between them. The two ends of the baffle 8 are fixedly connected to the first frame 1. The baffle 8 has protruding teeth 9 that are fixedly arranged on both sides, which are alternately arranged with the wolf teeth 10 of the wolf tooth roller 3.

[0031] The first feed inlet 2 is rectangular, with the same length as the toothed roller 3. Its edge is flush with the axis of the first toothed roller 31 and the second toothed roller 32. The lower part of the first toothed roller 31 and the second toothed roller 32 is inclined inward to buffer the speed at which ammonium nitrate falls from the first crushing device into the second crushing device.

[0032] When the lumpy ammonium nitrate falls onto the spiked roller 3 from the first feed port 2, the two spiked rollers 3 rotate inward relative to each other, breaking up the lumpy ammonium nitrate. At the same time, the protruding teeth 9 on the baffle 8 are also inserted between the adjacent spiked teeth 10 of the spiked roller 3. Since the protruding teeth 9 are fixed, they squeeze the lumpy ammonium nitrate to further break it up when the spiked teeth 10 rotate. The broken ammonium nitrate falls from below the spiked roller 3 and is discharged from the first discharge port 4.

[0033] Preferably, a buffer rod 15 is provided inside the first feed inlet 2. The buffer rod 15 is located above the toothed roller 3. Since the blocky ammonium nitrate is relatively heavy, it is easy to damage the toothed roller 3 if it falls directly from the first feed inlet 2 onto the toothed roller 3 over time. Therefore, a buffer rod 15 is provided in the middle of the first feed inlet 2. After the blocky ammonium nitrate falls into the feed inlet, it first collides with the buffer rod 15 for buffering or is split in two, and then falls onto the toothed roller 3. The length of the buffer rod 15 is the same as the length of the first feed inlet 2, which improves the service life of the crushing device.

[0034] Preferably, a safety support 16 is fixedly installed above the first crushing device, which allows workers to lean against during operation and also prevents workers from accidentally falling into the first crushing device, thus improving safety.

[0035] Figure 4 This is a front view of the second crushing device according to an embodiment of the present invention, combined with... Figure 1 The crushed ammonium nitrate falls from the first discharge port 4 and enters the second feed port 6. It falls onto the spiral roller 7 through the second feed port 6. The second drive motor 18 drives the spiral roller 7 to rotate, further grinding the ammonium nitrate. At the same time, the spiral roller 7 pushes the ammonium nitrate to move towards the second discharge port 20.

[0036] Figure 5 yes Figure 4 A top view of a partial structure of part C of the second crushing device, as shown below. Figure 5 As shown, the spiral roller 7 includes a first spiral roller 71 and a second spiral roller 72, which are arranged in parallel. Each spiral roller 7 includes a rotating shaft 11 and cooling blades 12. The rotating shaft 11 is a hollow pipe, and the cooling blades 12 have hollow chambers. The rotating shaft 11 is fixedly connected to the cooling blades 12, and the hollow chambers are connected to the hollow pipe. Both ends of the rotating shaft 11 are connected to a water pump 19, and external cooling equipment can be connected. Because friction generates heat during the grinding process, to prevent ammonium nitrate from exploding, the water pump 19 pumps cooling water 13 into the rotating shaft 11 for circulation. The cooling water 13 can flow into the cooling blades 12 for cooling, improving safety during the grinding process and allowing for continuous operation for extended periods without needing to stop and wait for cooling, thus improving grinding efficiency.

[0037] The spiral roller 7 also includes grinding blades 14, which are fixedly disposed on the outer edge surface of the cooling blades 12. The grinding blades 14 are thinner than the cooling blades 12 and are in the form of thin sheets, which can cut and grind ammonium nitrate.

[0038] Preferably, the bottom of the second frame 5 is a detachable structure, so that the second frame 5 can be disassembled after grinding is completed and the ammonium nitrate powder that has fallen to the bottom can be taken out.

[0039] The entire solid ammonium nitrate pulverizing device is made of cast steel, which is wear-resistant and corrosion-resistant.

[0040] During operation, solid ammonium nitrate is fed into the first crushing device through the first feed inlet 2. The solid ammonium nitrate is initially crushed by the buffer rod 15 and falls onto the toothed roller 3. The first drive motor 17, the second drive motor 18, and the water pump 19 are started. The first drive motor 17 drives the first toothed roller 31 and the second toothed roller 32 to rotate in opposite directions to crush the solid ammonium nitrate. The crushed ammonium nitrate falls from the first discharge outlet 4 into the second feed inlet 6 of the second crushing device and falls onto the spiral roller 7 through the second feed inlet 6. The second drive motor 18 drives the first spiral roller 71 and the second spiral roller 72 to rotate in opposite directions to further grind the crushed ammonium nitrate. At the same time, the water pump 19 pumps cooling water 13 into the pipes and cooling blades 12 of the spiral roller 7 to cool it down. During the rotation of the spiral roller 7, the ground ammonium nitrate powder is conveyed to the second discharge outlet 20 for discharge, completing the crushing of solid ammonium nitrate. Finally, the bottom of the second frame 5 can be disassembled to collect the remaining ammonium nitrate powder at the bottom.

[0041] This invention features a double-layer pulverizing device. The first pulverizing device performs initial pulverization of solid ammonium nitrate, and the pulverized ammonium nitrate falls into the lower second pulverizing device for further grinding. Cooling is performed during the pulverization process to ensure that the pulverizing device can work stably for a long time, resulting in uniform ammonium nitrate powder with the required fineness, thus improving the pulverization efficiency and quality of ammonium nitrate.

[0042] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that this utility model is not inherently related to any specific computer, virtual device, or electronic device, and various general-purpose devices can also implement this utility model. The above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A solid ammonium nitrate pulverizing device, characterized by, The application relates to a solid ammonium nitrate crushing device, which comprises a first crushing device and a second crushing device, wherein the first crushing device comprises a first rack (1), a first feeding port (2), a first driving motor (17), wolf tooth rollers (3) and a first discharging port (4); the second crushing device comprises a second rack (5), a second feeding port (6), a second driving motor (18), spiral rollers (7) and a second discharging port (20); wherein: The second crushing device is arranged below the first crushing device, the first feeding port (2) is arranged at the upper portion of the first rack (1), the first driving motor (17) is connected with the wolf tooth rollers (3), the first discharging port (4) is arranged at the lower portion of the first rack (1) and corresponds to the position of the second feeding port (6), the second driving motor (18) is connected with the spiral rollers (7), and solid ammonium nitrate falls into the first crushing device for crushing and then enters the second crushing device from the first discharging port (4) for further crushing.

2. The solid ammonium nitrate pulverizing apparatus according to claim 1, wherein The wolf tooth rollers (3) comprise first wolf tooth rollers (31) and second wolf tooth rollers (32), the first wolf tooth rollers (31) and the second wolf tooth rollers (32) are arranged in parallel, and a baffle (8) is arranged between the first wolf tooth rollers (31) and the second wolf tooth rollers (32), and the baffle (8) is fixedly connected with the first rack (1) at both ends.

3. The solid ammonium nitrate pulverizing apparatus of claim 2, wherein, Convex teeth (9) are fixedly arranged on the two sides of the baffle (8) and are alternately arranged with wolf teeth (10) of the wolf tooth rollers (3).

4. The solid ammonium nitrate pulverizing apparatus of claim 1, wherein The spiral rollers (7) comprise rotating shafts (11) and cooling blades (12), the rotating shafts (11) are hollow pipes, the cooling blades (12) are provided with hollow cavities, the rotating shafts (11) are fixedly connected with the cooling blades (12), the rotating shafts (11) are rotatably connected with water pumps (19) at both ends, and the water pumps (19) pump cooling water (13) into the rotating shafts (11) for circulation.

5. The solid ammonium nitrate pulverizing apparatus of claim 4, wherein, The spiral rollers (7) further comprise grinding blades (14), the grinding blades (14) are fixedly arranged on the upper surfaces of the cooling blades (12), and the thickness of the grinding blades (14) is smaller than that of the cooling blades (12).

6. The solid ammonium nitrate pulverizing apparatus of claim 1, wherein The spiral rollers (7) comprise first spiral rollers (71) and second spiral rollers (72), and the first spiral rollers (71) and the second spiral rollers (72) are arranged in parallel.

7. The solid ammonium nitrate pulverizing apparatus of claim 1, wherein A buffer rod (15) is arranged in the first feeding port (2) and located above the wolf tooth rollers (3).

8. The solid ammonium nitrate pulverizing apparatus of claim 1, wherein, A safety support (16) is fixedly arranged above the first crushing device.

9. The solid ammonium nitrate pulverizing apparatus of claim 5, wherein, The first crushing device and the second crushing device are made of cast steel.

10. The solid ammonium nitrate pulverizing apparatus of claim 1, wherein The bottom of the second rack (5) is detachable.

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