Ammonium amine explosive mixing and loading all-in-one machine and mixing and loading method thereof

Abstract

The invention discloses an ammonium amine explosive mixing and loading all-in-one machine and a mixing and loading method thereof. The mixing device is arranged on the bracket and is used for mixing to prepare an ammonium amine matrix; the additive device is connected to one side of the mixing device; and the charging pipe is connected with the discharging end of the mixing device. The static mixer is located at an outlet of the charging pipe, the additive is inserted into the charging pipe through the pressure-resistant thin pipe and extends to the outlet of the charging pipe to be in contact with the static mixer, and a water phase and a mixture of ammonium nitrate and a thickening agent are added into the mixing device to be mixed, so that an ammonium amine matrix is prepared; the ammonium-amine explosive mixing and loading all-in-one machine not only is suitable for the loading cartridges in a production workshop, but also can be used for on-site mixing and loading, the ammonium-amine matrix pumping resistance is small, and the production and use safety of ammonium-amine explosives is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of mixed explosives, in particular to an ammonium amine explosive mixed all-in-one machine and a mixing method thereof. Background Art

[0002] Ammonium amine explosive is a kind of water phase made by mixing ammonium nitrate and organic ammonium with a pH regulator aqueous solution at room temperature, and then mixed with ammonium nitrate and a thickener to form an ammonium amine matrix, which is then statically mixed with additives for foaming and cross-linking to form a water-resistant colloidal explosive. This type of explosive has low cost and great power, and is widely used in blasting operations in blasting projects such as metallurgy, coal, chemical industry, large and medium-sized open-pit mines, quarries, earthwork, tunnel construction, etc.

[0003] The disclosure discloses a water gel explosive mixing device and a control method thereof, which includes a mixed mother liquid storage tank, a pharmaceutical tank, a batching tank, and a static mixer. The air flow agitator is ventilated to mix the materials in the mixed mother liquid storage tank with air flow, and the materials are transferred to the pharmaceutical tank through a delivery pump at the bottom of the mixed mother liquid storage tank; the pharmaceutical tank is equipped with a stirring device; the added liquid materials and powdered solid materials are fully stirred and mixed. The stirred colloid is transported from the bottom to the static mixer, and the quick-setting agent tank transports the quick-setting agent to the static mixer, and the end of the first hose and the end of the second hose are independently parallel before entering the static mixer, and then enter the static mixer together. The mixing device realizes the pre-preparation and storage of materials, and the production process is safe and reliable. Various process parameters are automatically monitored and adjusted, and the rapid preparation of water gel explosives can be realized at normal temperature and pressure, and the quality is stable. However, most of the existing mixing equipment mixes the additive with the mother liquor and then transports it to the blast hole through the charge tube. The mixed materials are quickly cross-linked, which increases the pumping resistance and affects the transportation effect. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, and the proposed ammonium amine explosive mixing and loading integrated machine comprises: a bracket; a mixing device, which is arranged on the bracket and is used to mix and form an ammonium amine matrix; an additive device, which is connected to one side of the mixing device; a charging tube, which is connected to the discharge end of the mixing device; and a static mixer, which is arranged at the outlet of the charging tube and is connected to the additive device through an additive adding tube.

[0005] As a further description of the above technical solution: the mixing device includes an ammonium amine matrix mixing tank, on which an agitator is arranged, the mixing tank is connected to a matrix delivery pump via a first conduit, and the matrix delivery pump is connected to a charging pipe via a second conduit.

[0006] As a further description of the above technical solution: the additive device includes an additive storage tank, the additive storage tank is connected to an additive metering pump through a third conduit, and the additive metering pump is in contact with a static mixer through an additive adding pipe.

[0007] As a further description of the above technical solution: the additive adding tube is inserted into the charge tube and extends to the charge tube outlet to contact the static mixer.

[0008] As a further description of the above technical solution: a loading platform is arranged on the bracket.

[0009] As a further description of the above technical solution: a material level pressure transmitter is arranged on the first conduit.

[0010] As a further description of the above technical solution: the additive adding tube is a pressure-resistant tube with an outer diameter of 6-10 mm, a pressure resistance of not less than 2 atmospheres, and smaller than the inner diameter of the charging tube.

[0011] Mixing method of ammonium amine explosives: S1. First close the discharge valve of the ammonium amine matrix mixing tank, turn on the agitator, add the raw materials into the mixing tank and stir to obtain the ammonium amine matrix; S2. Open the discharge valves of the ammonium amine matrix mixing tank and the additive storage tank, and simultaneously turn on the matrix delivery pump and the additive metering pump to load the explosives; S3. When the matrix material level reaches the lower critical position, the entire line is shut down.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] 1. The present invention prepares an ammonium-amine matrix by adding an aqueous phase prepared by mixing an aqueous solution of a pH regulator, ammonium nitrate, an organic amine, etc. and a mixture of ammonium nitrate and a thickener into a mixing device. The additive device directly charges a charge roll or a blast hole through a static mixer in a charge tube. The invention is suitable for mixing in a production workshop and for mixing at a blasting site. The matrix stirring and pumping speed of the ammonium-amine explosive mixing and loading integrated machine is low, and the mixing and pumping speed is stable and reliable.

[0014] 2. The additive metering pump is inserted into the charge tube through a pressure-resistant fine catheter and extends to the charge tube outlet to contact the static mixer, which avoids premature mixing of the additive with the ammonium amine matrix, causing rapid cross-linking and increasing pumping resistance. There is no need for water ring drag reduction, which ensures the safety of explosive production and use.

[0015] 3. The present invention uses graphics to display the working status of each device, the material level pressure of the mixing tank, the temperature and pressure of the matrix delivery pump, so as to realize the design of the system operation and the control of each link of the system into an overall control system. All operation controls are operated through buttons on the operation box. The key links of the production process are equipped with detection devices, over-limit alarms and interlocks, and the whole line has self-diagnosis function, complete status indication, and easy maintenance.

[0016] 4. The present invention hoists the ammonium-amine explosive mixing and loading integrated machine as a whole through a bracket, which is convenient to move. The integrated machine can be placed on a vehicle for use, or on the ground or other platforms for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an ammonium amine explosive mixing and loading integrated machine in one embodiment of the present invention;

[0018] Figure 2 It is a top view of an ammonium amine explosive mixing and loading integrated machine in one embodiment of the present invention;

[0019] Figure 3 It is a side view of an ammonium amine explosive mixing and loading integrated machine in one embodiment of the present invention;

[0020] Figure 4 This is a flow chart of an ammonium amine explosive mixing and loading integrated machine in one embodiment of the present invention;

[0021] Figure 5 for Figure 1 A schematic diagram of the structure of the mixing device in the ammonium amine explosive mixing and loading machine;

[0022] Figure 6 for Figure 1 Schematic diagram of the structure of the static mixer in the ammonium amine explosive mixing machine.

[0023] Legend:

[0024] 1. Bracket; 2. Mixing device; 3. Additive device; 4. Charging tube; 5. Static mixer; 6. Additive adding tube; 7. Loading platform; 8. Material level pressure transmitter; 9. Thermometer; 10. Pressure gauge; 11. Explosion venting disc; 12. Control cabinet; 13. Touch screen computer; 201. Ammonium amine matrix mixing tank; 202. Agitator; 203. First conduit; 204. Matrix delivery pump; 205. Second conduit; 206. Agitator motor; 207. Reducer; 31. Additive storage tank; 32. Third conduit; 33. Additive metering pump. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1-6 The present invention provides a technical solution: the ammonium amine explosive mixing and loading machine of the present invention comprises: a bracket 1; a mixing device 2, which is arranged on the bracket 1 and is used to mix and form an ammonium amine matrix; an additive device 3, which is connected to one side of the mixing device 2; a charging tube 4, which is connected to the discharge end of the mixing device 2; a static mixer 5, which is arranged at the outlet of the charging tube 4 and is connected to the additive device 3 through an additive adding tube 6.

[0029] In this embodiment, according to the process formula, the pH value regulator aqueous solution, ammonium nitrate, organic amine, and thickener are added to the mixing device 2 and mixed to form an ammonium amine matrix, and the additive device 3 is used to directly load the charge roll or load it into the blast hole through the static mixer 5 in the charge tube 4. It is suitable for mixing in the production workshop and can also be used for mixing at the blasting site. The ammonium amine explosive mixing and loading integrated machine has low stirring and pumping speeds, is stable and reliable, and its mixing and transportation are all electrically controlled, flexible in operation, accurate in metering, safe and reliable; the viscosity of the ammonium amine matrix is ​​low when mixed, and the pumping resistance is small. It reaches a certain viscosity only after being loaded into the blast hole or the charge roll, which ensures the safety of the production and use of the explosives; the machine has excellent humanized design, simple operation and convenient maintenance.

[0030] Among them, the ammonium amine matrix is ​​made by mixing ammonium nitrate, organic amine, pH regulator aqueous solution and thickener, and then loaded into the blast hole or powder roll through static sensitization to make non-detonator sensitized water-resistant colloidal explosive, which eliminates unsafe factors in the production, transportation, storage and charging process of commercial explosives, does not cause any pollution to the environment, ensures the safety of explosives production and blasting construction, and is an ideal equipment for the production of ammonium amine explosives.

[0031] Specifically, the ammonium amine explosive mixing and loading machine is a special equipment that integrates an ammonium amine matrix mixing tank, an additive tank, and a sensitized charge through a static mixer, and has the functions of mixing and loading ammonium amine explosives. It is suitable for mixing in production workshops and can also be used for on-site mixing.

[0032] like Figure 1 and Figure 5 As shown, specifically, the mixing device 2 includes an ammonium amine matrix mixing tank 201, on which an agitator 202 is arranged, the mixing tank 201 is connected to a matrix delivery pump 204 via a first conduit 203, the matrix delivery pump 204 is connected to a charging tube 4 via a second conduit 205, and the agitator 202 is provided with a stirring motor 206 and a reducer 207.

[0033] In this embodiment, by controlling the operation of the stirring motor 206 and the reducer 207, the agitator 202 can be driven to operate, and the materials inside the ammonium amine matrix mixing tank 201 are evenly mixed to form an ammonium amine matrix, and then the matrix delivery pump 204 is operated to deliver the ammonium amine matrix to the charging tube 4.

[0034] Specifically, the ammonium amine matrix mixing tank 201 has an inner diameter of 600 mm, a height of 600 mm, and a volume of 0.169 m3. The stirring motor 206 adopts an explosion-proof motor with a power of 3 KW and a rotation speed of 1450 rpm. The speed reducer 207 has a reduction ratio of 30:1 and a stirrer speed of 48 rpm. The matrix delivery pump 204 has a motor power of 2.2 KW and a rotation speed of 1420 rpm. The speed reducer has a reduction ratio of 10:1. The speed of the matrix delivery pump 204 is 142 rpm and the flow rate is 36 Kg / min.

[0035] Among them, the reducer is regularly filled with YB-N46 anti-wear hydraulic oil, and the material must be filtered when feeding. When there is no material in the matrix, when the pressure gauge is 0.001MPa, it has a safety interlock, automatically shuts down, and all equipment shuts down.

[0036] The matrix delivery pump 204 is equipped with a safety interlock protection device. When the material level of the ammonium amine matrix mixing tank 201 drops to a critical value, the entire line is shut down. The startup sequence has an interlock shutdown protection device. The matrix delivery pump 204 has an over-high outlet pressure, over-high temperature and motor overload protection. When overloaded, the relay triggers an alarm and the entire line automatically shuts down.

[0037] Among them, at least one matrix delivery pump 204 is provided, and two can be provided to increase the delivery efficiency. The matrix delivery pump 204 adopts an electric cylinder plunger pump, a piston pump or a screw pump.

[0038] like Figure 1 and Figure 3As shown, specifically, the additive device 3 includes an additive storage tank 31 , which is connected to an additive metering pump 33 via a third conduit 32 , and the additive metering pump 33 is in contact with the static mixer 5 via an additive adding pipe 6 .

[0039] In this embodiment, the additive storage tank 31 stores the additive, and the additive is introduced into the static mixer 5 through the additive metering pump 33 to be mixed with the ammonium amine matrix.

[0040] Specifically, the speed of the matrix delivery pump 204 is constant, 42 revolutions per minute, the measured matrix density is 1.4g / cm3, the flow rate is 36Kg / minute, and the additive flow rate is adjusted by the additive metering pump 33, and the measured value is 164g / minute. The additive is added to the pump outlet and loaded into the blast hole or explosive roll through the static mixer to achieve mechanized mixing and charging. The entire system is controlled by PLC.

[0041] Specifically, the additive storage tank 31 has an inner diameter of 300 mm, a height of 300 mm, and a volume of 0.021 m3. The motor power of the additive metering pump 33 is 0.37 KW, 1380 rpm, and the flow rate is adjustable according to the amount added. The additive is a mixture of a foaming agent and a water-repellent agent, and must be poured into the additive tank 31 through a filter.

[0042] There is at least one additive metering pump 33 , and two additive metering pumps 33 may be provided to increase the delivery efficiency. The additive metering pumps 33 correspond to the substrate delivery pumps 204 one by one.

[0043] like Figure 1 and Figure 6 As shown, specifically, the additive adding pipe 6 is inserted into the charging pipe 4 and extends to the outlet of the charging pipe 4 and contacts the static mixer 5; the additive metering pump 33 is inserted into the charging pipe 4 through the additive adding pipe 6 and extends to the outlet of the charging pipe 4 and contacts the static mixer 5, thereby avoiding premature mixing of the additive with the ammonium amine matrix, causing rapid cross-linking, and increasing pumping resistance, and no water ring drag reduction is required, thereby ensuring the safety of explosive production and use.

[0044] like Figure 1 and Figure 4 As shown, a material level pressure transmitter 8 is provided on the first conduit 203, and a thermometer 9, a pressure gauge 10 and an explosion venting plate 11 are provided on the second conduit 205 in sequence; the material level pressure transmitter 8 is used to monitor the material level change of the matrix in the ammonium amine matrix mixing tank 201, and convert it into an electrical signal for convenient control and display, the thermometer 9 is used to monitor the temperature of the flowing matrix in the second conduit 205 to ensure that the system is within a safe and effective operating range, the pressure gauge 10 displays the pressure inside the second conduit 205 in real time, and helps the operator monitor the operating status of the equipment, and the explosion venting plate 11 is a safety device that can rupture under overpressure to prevent equipment damage or danger.

[0045] Specifically, the model of the material level pressure transmitter 8 is DG1300-GY-A-2-15KPA; the model of the pressure gauge 10 is 8CYB0524-252G; the model of the thermometer 9 is 7WG-WZPB-ZY150; and the model of the explosion venting disc 11 is 9YC40-1.2-50A.

[0046] like Figure 2 and Figure 4 As shown, specifically, a loading platform 7 is arranged on the bracket 1, and a control cabinet 12 and a touch screen computer 13 are arranged on one side of the loading platform 7; the ammonium amine explosive mixing and loading integrated machine is hoisted as a whole through the bracket 1, and it is convenient to move. The integrated machine can be placed on a vehicle for use, and can also be placed on the ground or other platforms for use.

[0047] In this embodiment, the automatic control system mainly has the following functions: only completing the work of explosive mixing, charging start and automatic stop. When the matrix is ​​unloaded, or the pressure, temperature, and current at the outlet of the charging screw pump are overloaded, the whole line can be automatically shut down to ensure the safety of production. The automatic control system consists of a control cabinet 12 and a touch screen computer 13. All operations can be performed through buttons set on the operation box of the control cabinet 12. The touch screen computer 13 displays the flow chart of the entire control system, and graphically displays the working status of each device and the material level pressure of the mixing tank 201, and the temperature and pressure of the matrix delivery pump 204. The operation of the system and the control of each link of the system are designed into an overall control system and made into a console. All operation controls are operated by buttons on the operation box (considering the mining environment and the convenience of on-site operation, button operation is more convenient for operators); the human-machine interface is friendly, and the working status and parameters of each equipment are displayed graphically, which is more intuitive and has good monitorability; the control system has a hierarchical structure and decentralized control functions. The key components of the control system are all imported, thereby improving the system reliability; detection devices, over-limit alarms and interlocks are set up in the key links of the production process; the system adopts a standardized, modular, building block structure with flexible configuration, self-diagnosis function, complete status indication and easy maintenance.

[0048] Among them, all the measurements of the ammonium amine explosive mixing machine have been determined by the equipment in advance according to the amount of the matrix, and the amount of additives added is determined, and there is no need for system design. The controller installed in the control cabinet 12 is a Siemens programmable controller and an analog input module. When producing, the startup sequence cannot be reversed. When cleaning the equipment, any device can be turned on at will.

[0049] The method for mixing ammonium amine explosives is as follows: S1, first closing the discharge valve of the ammonium amine matrix mixing tank 201, turning on the agitator 202, adding the raw materials into the mixing tank 201 and stirring to obtain the ammonium amine matrix; S2, opening the discharge valves of the ammonium amine matrix mixing tank 201 and the additive storage tank 31, and simultaneously turning on the matrix delivery pump 204 and the additive metering pump 33 to charge the explosives; S3, when the matrix material level reaches the lower limit critical position, the entire line is shut down.

[0050] In this embodiment, when working, first close the discharge valve below the mixing tank 201, turn on the agitator 202, add the pH adjuster aqueous solution and ammonium nitrate and stir for 1 minute, add the organic amine and mix until completely dissolved, then add the remaining ammonium nitrate and thickener and mix, and the matrix is ​​obtained after the pH value meets the production requirements, then open the discharge valve below the mixing tank 201 and the additive storage tank, and turn on the screw pump and the metering pump at the same time to load the medicine. During the production process, when the matrix material level reaches the lower critical position, the entire line is shut down. After the entire line is shut down, it is manually switched to the cleaning key, and the screw pump is turned on to load the medicine. When there is no residual medicine in the mixing tank, water is added to the mixing tank until the remaining medicine in the screw pump and the charging pipe is completely loaded, and then the cleaning is completed.

[0051] Among them, the residual matrix in the tank solidifies the agitator and the agitator cannot be started; when the material level in the matrix tank is low, the control room configuration screen alarms and automatically shuts down; the screw pump outlet pressure is too high, overtemperature, and motor overload automatically shut down.

[0052] Working principle: According to the process formula, the pH regulator aqueous solution, ammonium nitrate, organic amine and thickener are added to the mixing device 2 and mixed to form an ammonium amine matrix. The additive device 3 is used to directly load the charge roll or the blast hole through the static mixer 5 in the charge tube 4. It is suitable for mixing in the production workshop and for mixing at the blasting site. The mixing and pumping speed of the ammonium amine explosive mixing machine is low and stable and reliable. The mixing and transportation are all electrically controlled, with flexible operation, accurate measurement, safety and reliability. The viscosity of the ammonium amine matrix is ​​low when mixed, and the pumping resistance is small. It reaches a certain viscosity only after being loaded into the blast hole or the charge roll, which ensures the safety of the production and use of explosives. The machine has excellent humanized design, simple operation and convenient maintenance.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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.

[0054] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An ammonium amine explosive mixing and loading machine, characterized in that: include: Bracket (1); A mixing device (2), the mixing device (2) being arranged on the bracket (1) and used for mixing to form an ammonium amine matrix; An additive device (3), the additive device (3) being connected to one side of the mixing device (2); A charge tube (4), the charge tube (4) being connected to the discharge end of the mixing device (2); A static mixer (5), wherein the static mixer (5) is arranged at the outlet of the charge tube (4) and is connected to the additive device (3) via an additive adding pipe (6).

2. The ammonium amine explosive mixing and loading machine according to claim 1, characterized in that: The mixing device (2) comprises an ammonium amine matrix mixing tank (201), on which a stirrer (202) is arranged, the mixing tank (201) is connected to a matrix delivery pump (204), and the matrix delivery pump (204) is connected to a charge pipe (4).

3. The ammonium amine explosive mixing and loading machine according to claim 1, characterized in that: The additive device (3) comprises an additive storage tank (31), wherein the additive storage tank (31) is connected to an additive metering pump (33), and the additive metering pump (33) is in contact with a static mixer (5) through an additive adding pipe (6).

4. The ammonium amine explosive mixing and loading machine according to claim 1, characterized in that: The additive adding pipe (6) is inserted into the charging pipe (4) and extends to the outlet of the charging pipe (4) to contact the static mixer (5).

5. The ammonium amine explosive mixing and loading machine according to claim 1, characterized in that: A loading platform (7) is provided on the bracket (1).

6. The ammonium amine explosive mixing and loading machine according to claim 2, characterized in that: A material level pressure transmitter (8) is provided on the first conduit (203).

7. The ammonium amine explosive mixing and loading machine according to claim 1, characterized in that: The additive adding tube is a pressure-resistant tube with an outer diameter of 6-10 mm, a pressure resistance of not less than 2 atmospheres, and smaller than the inner diameter of the charging tube (4).

8. The ammonium amine explosive mixing and loading machine according to claim 2, characterized in that: At least one matrix delivery pump (204) is provided, and the matrix delivery pump (204) is connected to the mixing tank (201) via a first conduit (203), and the matrix delivery pump (204) is connected to the charge tube (4) via a second conduit (205).

9. The ammonium amine explosive mixing and loading machine according to claim 3, characterized in that: At least one additive metering pump (33) is provided, and the additive metering pump (33) is connected to the additive storage tank (31) via a third conduit (32).

10. A method for mixing ammonium amine explosives, characterized in that: S1, first close the discharge valve of the ammonium amine matrix mixing tank (201), start the agitator (202), add the raw materials into the mixing tank (201) and stir to obtain the ammonium amine matrix; S2, opening the discharge valves of the ammonium amine matrix mixing tank (201) and the additive storage tank (31), and simultaneously starting the matrix delivery pump (204) and the additive metering pump (33) to load the drug; S3. When the matrix material level reaches the lower critical position, the entire line will be shut down.

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