Roller press for processing expanded ammonium nitrate explosive
By introducing a circulating material distributor and a material guide into the roller press used for processing expanded ammonium nitrate explosives, the problem of uneven crushing was solved, efficient and uniform crushing effects were achieved, and product quality and equipment service life were improved.
Patent Information
- Application Number
- CN202422443816.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-10
AI Technical Summary
When the expanded ammonium nitrate explosive semi-finished product is crushed by the existing roller press, the crushing is uneven, the efficiency is low, and the product quality is affected.
A circulating material distributor is used, which includes a material hopper, a material distributor trough and a counter-rotating spiral conveying rod to ensure that the raw materials are evenly distributed on the crushing rollers, and the material is evenly distributed on the fine crushing rollers through the material guide.
It improves crushing efficiency and uniformity, reduces the probability of blockage, improves product quality and reduces energy consumption and equipment wear.
Smart Images
Figure CN223300062U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of expanded ammonium nitrate processing equipment, in particular to a roller press for processing expanded ammonium nitrate explosives. Background Art
[0002] During the manufacturing process of expanded ammonium nitrate explosives, the semi-finished explosives need to be crushed by a roller press and then mixed in a mixer to become finished product raw materials. They are then transported to the loading and packaging workshop for loading and packaging. The packaged finished products are transported to the transit warehouse via a finished product conveyor belt, loaded onto trucks and transported to the main warehouse.
[0003] When the explosive semi-finished products are crushed by the existing roller press, the raw materials are concentrated in one position of the crushing roller in the roller press for crushing. The raw materials are not dispersed enough and the various positions of the crushing roller cannot be fully utilized for crushing, resulting in low crushing efficiency and low uniformity. When the uniformity is low, it will also affect the subsequent fine crushing effect. Utility Model Content
[0004] In view of the above problems, the utility model provides a roller press for processing expanded ammonium nitrate explosives, which is used to solve the problem that the existing semi-finished explosives are unevenly crushed and inefficient when crushed by the roller press, resulting in reduced product quality.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A roller press for processing expanded ammonium nitrate explosives comprises a frame, a feed port is provided at the top of the frame, and a discharge port is provided at the bottom of the frame; a coarse crushing roller is provided below the feed port, and a fine crushing roller is provided below the coarse crushing roller; a circulating material distributor is provided above the coarse crushing roller; the circulating material distributor comprises a hopper mounted inside the feed port, two material distributor troughs are provided at the bottom of the hopper, a partition is provided between the material distributor troughs, and notches at both ends of the partition allow the two material distributor troughs to communicate with each other; dropout holes are evenly distributed at the bottom of the material distributor troughs; screw conveying rods are provided in the material distributor troughs; and the conveying directions of the two screw conveying rods are opposite.
[0007] Beneficial effects:
[0008] When the raw materials are put into the feed port, they are collected by the hopper. The two spiral conveying rods rotate in opposite directions, causing the raw materials to circulate in the screed trough, so that the raw materials are evenly dispersed from the drop holes at the bottom of the screed trough and fall into various positions of the coarse crushing roller for crushing, which can improve the crushing efficiency and crushing uniformity and reduce the probability of blockage.
[0009] As a further improvement to the above solution, one end of the spiral conveying rod is meshed with each other through a meshing gear, and the other end is connected to a driving source. This design can ensure that the two spiral conveying rods operate simultaneously, improve the uniformity and stability of feeding, and thus improve the crushing efficiency.
[0010] As a further improvement to the above solution, a hopper is installed between the coarse and fine crushing rollers. A material guide is installed at the lower outlet of the hopper. This inverted V-shaped guide is located above the center of the fine crushing rollers. This guide allows material falling from the coarse crushing roller to fall along the guide onto the two fine crushing rollers. This improvement ensures a smooth transition of material from the coarse to the fine crushing rollers, reducing material scattering and waste. In particular, it prevents material from directly falling into the gap between the fine crushing rollers and causing accumulation, thereby improving the uniformity and effectiveness of material crushing.
[0011] As a further improvement of the above solution, one of the spiral conveying rods is directly connected to the drive motor.
[0012] As a further improvement of the above solution, one of the spiral conveying rods is engaged with the transmission gear of the coarse crushing roller through a gear.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] The roller press of the utility model realizes uniform dispersion crushing and efficient crushing of expanded ammonium nitrate explosive semi-finished products, improves crushing efficiency and finished product quality, reduces energy consumption and equipment wear, and can reduce the blockage rate, and has good economy and practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the end face cross-sectional structure of this equipment.
[0016] Figure 2 This is a schematic diagram of the main view of the device.
[0017] Figure 3 This is a top view of the internal structure of the device.
[0018] Figure 4 This is a schematic diagram of the structure of the circulating material distributor from a top view.
[0019] Figure 5 Schematic diagram of blanking hole distribution.
[0020] Figure 6 This is a schematic diagram of the cross-sectional structure of the circulating material distributor.
[0021] In the figure: 1. Frame; 2. Reducer; 3. Coarse crushing roller; 4. Fine crushing roller; 5. Adjusting screw; 6. Transmission gear; 7. First motor; 8. Second motor; 9. Feed hopper; 10. Discharge port; 11. Circulating material distributor; 12. Material guide; 110. Material hopper; 111. Material distributor trough; 112. Screw conveyor rod; 113. Meshing gear; 115. Dropping hole; 116. Partition. DETAILED DESCRIPTION
[0022] In order to enable those skilled in the art to better understand the technical solution, the present invention is described in detail below in conjunction with the embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.
[0023] like Figure 1-6 As shown, the following is a specific embodiment. In this embodiment, the roller press scheme is as follows:
[0024] 1. Frame 1: As the main supporting structure of the equipment, it has a feed port on the top and a discharge port on the bottom.
[0025] 2. Feeding port: located at the top of the frame 1, used to receive the semi-finished explosives to be crushed.
[0026] 3. Coarse crushing roller 3: Located below the feed port, it is used for preliminary crushing of the raw materials. The two coarse crushing rollers 3 are meshed to achieve crushing. The ends of the coarse crushing rollers 3 are meshed with each other through transmission gears; the coarse crushing rollers 3 are connected to the reducer 2 through belt drive, and the reducer 2 is connected to the first motor 7.
[0027] 4. Fine crushing roller 4: Located below the coarse crushing roller 3, it is used to further crush the raw materials. The two fine crushing rollers 4 are meshed to achieve crushing. The ends of the fine crushing rollers 4 are meshed through meshing gears 113. The fine crushing rollers 4 are also connected to another reducer 2 through a belt drive. The reducer 2 is connected to the second motor 8; the bracket of one of the fine crushing rollers 4 can be adjusted in position by adjusting the screw 5, thereby controlling the crushing particle size.
[0028] 5. Circulating material distributor 11: Located above the coarse crushing roller 3, it includes a hopper 110, a material distributor trough 111, a partition 116, a material drop hole 115, and two counter-rotating spiral conveying rods 112; the hopper 110 is used to accommodate the input raw materials.
[0029] 6. Screw conveying rod 112: one end is meshed with each other through meshing gear 113, and the other end is connected to the motor or meshed with the transmission gear 6 of the coarse crushing roller 3 through a gear.
[0030] 7. Material hopper 9: located between the coarse crushing roller 3 and the fine crushing roller 4, used for transition materials.
[0031] 8. Material guide 12: Located at the lower outlet of the hopper 9, it is in the shape of an inverted V and guides the material to be evenly distributed on the fine crushing roller 4.
[0032] Implementation method:
[0033] Taking a roller press for processing expanded ammonium nitrate explosives as an example, its specific parameters and operating steps are as follows:
[0034] 1. The frame adopts steel structure,
[0035] 2. The coarse crushing roller is made of high chromium alloy steel with a hardness of HRC60.
[0036] 3. The roller spacing of the fine crushing rollers is adjustable to meet different particle size requirements.
[0037] 4. The hopper capacity of the circulating material distributor is 100L, the width of the material distribution trough is 200mm, and the diameter of the material drop hole is 10mm.
[0038] 5. The rotation speed of the spiral conveyor rod is 60 revolutions per minute.
[0039] 6. The inverted V angle of the material guide is 60 degrees.
[0040] The steps are as follows:
[0041] The driving motor is started to drive the spiral conveying rod 112 to rotate.
[0042] The material is added to the hopper 110 through the feed port and transported by the spiral conveying rod 112 to circulate in the two sparging troughs 111. The raw materials at the end of the sparging trough 111 will pass through the gap on the partition 116 and enter the sparging trough 111 on the other side and flow in the opposite direction, forming a circular movement to ensure that the material is evenly dispersed and falls into the coarse crushing roller 3.
[0043] The material falls evenly into the coarse crushing roller 3 through the drop holes 115 for preliminary crushing.
[0044] The crushed material passes through the hopper 9 and is guided by the guide 12 to fall onto the fine crushing roller 4 for further crushing.
[0045] The material reaching the required particle size is discharged through the discharge port 10.
[0046] The roller press of the utility model can realize efficient and uniform crushing of the semi-finished product of expanded ammonium nitrate explosive, improves production efficiency and product quality, reduces energy consumption and equipment wear, and has good economy and practicality.
[0047] It should be noted that, in this article, the terms: include, contain and any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used herein to illustrate the principles and implementation methods of the technical solution of the present utility model. The above examples are only used to help understand the method and core ideas of the present utility model. The above is only a preferred embodiment of the present utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the present utility model to other occasions without modification, should all be regarded as the scope of protection of the present utility model.
Claims
1. A roller press for processing expanded ammonium nitrate explosives, comprising a frame (1), wherein the frame (1) is provided with a feed port at the top and a discharge port (10) at the bottom; a coarse crushing roller (3) is provided below the feed port, and a fine crushing roller (4) is provided below the coarse crushing roller (3); characterized in that: A circulating material distributor (11) is provided above the coarse crushing roller (3); the circulating material distributor (111) comprises a material hopper (110) installed inside a feed port; two material distributor troughs (111) are provided at the bottom of the material hopper (110); a partition (116) is provided between the material distributor troughs (111); notches at both ends of the partition (116) allow the two material distributor troughs (111) to communicate with each other; drop holes (115) are evenly distributed at the bottom of the material distributor troughs (111); a spiral conveying rod (112) is provided in the material distributor trough (111); and the conveying directions of the two spiral conveying rods (112) are opposite.
2. A roller press for processing expanded ammonium nitrate explosive according to claim 1, characterized in that: One end of the spiral conveying rod (112) is meshed with each other through a meshing gear (113), and the other end is connected to a driving source.
3. A roller press for processing expanded ammonium nitrate explosive according to claim 1, characterized in that: A hopper (9) is provided between the coarse crushing roller (3) and the fine crushing roller (4); a material guide (12) is provided at the outlet at the lower end of the hopper (9); the material guide (12) is in the shape of an inverted V and is located above the middle of the fine crushing roller (4), so that the raw materials falling from the coarse crushing roller (3) fall along the material guide (12) onto the two fine crushing rollers (4).
4. A roller press for processing expanded ammonium nitrate explosive according to claim 1, characterized in that: One of the spiral conveying rods (112) is directly connected to the driving motor.
5. The roller press for processing expanded ammonium nitrate explosive according to claim 1, characterized in that: One of the spiral conveying rods (112) is meshed with the transmission gear (6) of the coarse crushing roller (3) through a gear.