Multifunctional interval charge control device for blasting operation

Abstract

The utility model relates to the technical field of blasting engineering, and disclose a kind of multifunctional interval charge control device for blasting operation, including the drill bit and charge pipe connected on blasting device, charge pipe is inserted on drill bit, and a plurality of discharge holes are opened in the outer end of charge pipe close to drill bit, charge pipe upper end is connected with feed pipe one and feed pipe two, feed pipe one, feed pipe two and charge pipe are Y-shaped setting, feed pipe one is used to transport explosive, and feed pipe two is used to transport stemming, by setting feed pipe one to transport explosive, feed pipe two transports stemming, utilize switching component to realize the interval filling of explosive and stemming, so that fill a part of explosive in drilling hole first, then fill stemming to interval, finally fill remaining explosive and carry out stemming plugging, so that the problem that energy is too concentrated in a part caused by single continuous charge can be effectively avoided, make explosion energy more evenly distributed in rock, so as to realize uniform blasting, improve blasting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of blasting engineering technology, specifically a multi-functional interval charging control device for blasting operations. Background Technology

[0002] Modern mines place higher demands on the quality of ore extraction. Charge control devices can precisely adjust the charge quantity and structure according to different rock characteristics, blasting targets, and mining processes, resulting in more uniform ore particle size, improved ore quality, and facilitated subsequent beneficiation and processing. For example, in metal mines, uniform particle size helps improve beneficiation recovery rates. Precise charge control allows for more rational use of explosive energy, thorough rock fragmentation, reduced blasting dead zones and residues, and increased blasting efficiency. This helps accelerate mining progress, increase production capacity, and meet society's growing demand for mineral resources.

[0003] The existing loading process is as follows: In a specialized emulsion explosive preparation workshop, ammonium nitrate, water, oil phase materials, and other raw materials are mixed and emulsified according to the formula to produce emulsion explosives that meet quality standards. The prepared emulsion explosives are then transported through pipelines to the storage tank of the loading device. The loading device is moved to the designated location, and the pumping pipeline and borehole are connected. The depth, diameter, and verticality of the borehole are checked to ensure they meet the loading requirements.

[0004] Start the pumping system to pump the emulsion explosive from the storage tank to the mixer via pipeline. During pumping, control the pumping pressure and flow rate to ensure stable explosive delivery. If additional additives or sensitization treatment are required during loading, thoroughly mix the emulsion explosive with the additives in the mixer. Static or dynamic mixers are typically used to ensure effective mixing.

[0005] The amount of explosive charge in each borehole is accurately controlled through a metering system. The mixed emulsion explosive is slowly injected into the borehole through the charging tube, while the charging process is carefully observed to prevent overflow or air bubbles. During the charging process, the charging speed and method can be adjusted appropriately according to the depth of the borehole and the properties of the rock.

[0006] However, in existing open-pit mine production processes, in steps where rock hardness varies greatly, a single continuous charge will cause energy to be too concentrated in a certain part, making it impossible to achieve uniform blasting and thus reducing blasting efficiency. Therefore, it does not meet the existing needs. To address this, we propose a multi-functional interval charge control device for blasting operations. Utility Model Content

[0007] This utility model provides a multi-functional interval charging control device for blasting operations. It has the beneficial effect of solving the problem mentioned in the background art that in the existing open-pit mine production process, in steps with large variations in rock hardness, a single continuous charge will cause energy to be too concentrated in a certain part, making it impossible to achieve uniform blasting, thus resulting in reduced blasting efficiency.

[0008] This utility model provides the following technical solution: a multi-functional interval charging control device for blasting operations, including a drill bit and a charging tube connected to a blasting device. The charging tube is inserted into the drill bit, and a plurality of discharge holes are opened on the outer side of the charging tube near the drill bit. The upper end of the charging tube is connected to a feed pipe one and a feed pipe two. The feed pipe one, the feed pipe two, and the charging tube are arranged in a Y-shape. The feed pipe one is used to transport explosives, and the feed pipe two is used to transport stemming material. A shell is installed outside the connection of the feed pipe one, the feed pipe two, and the charging tube. A switching component for switching the feed pipe one and the feed pipe two is provided inside the shell. A pushing component is provided on the side of the charging tube.

[0009] Preferably, the switching assembly includes a rotating shaft rotatably inserted into the housing, a valve plate mounted on the outside of the rotating shaft, the valve plate being located between the first feed pipe and the second feed pipe, a push rod for controlling the valve plate being fixedly inserted inside the valve plate, a drive plate being fixedly sleeved on the end of the push rod, a sliding groove being formed inside the drive plate, a control plate being slidably inserted into the sliding groove, and a cylinder being mounted outside the housing, the output end of the cylinder being fixedly connected to the bottom of the control plate.

[0010] Preferably, the feeding assembly includes a piston cylinder mounted on the outer casing, the piston cylinder being located on the side of the cylinder, a piston rod being inserted into the piston cylinder, a piston block being installed at the end of the piston rod, the piston block being located inside the piston cylinder, and an air supply pipe being connected between the bottom of the piston cylinder and the drug delivery tube.

[0011] Preferably, a synchronization plate is installed on the side of the control board, and the bottom of the synchronization plate is fixedly connected to the end of the piston rod away from the piston block.

[0012] Preferably, a spring is provided on the piston rod sleeve, one end of the spring is fixedly connected to the synchronization plate, and the other end of the spring is fixedly connected to the end of the piston cylinder.

[0013] Preferably, a gas supply pipe is connected between the piston cylinder and the drug loading pipe, and a gas supply check valve is installed in the gas supply pipe and a gas delivery check valve is installed in the gas delivery pipe.

[0014] Preferably, a scraper is installed on the outside of the valve plate, and the scraper has inclined surfaces on both sides.

[0015] This utility model has the following beneficial effects:

[0016] 1. This blasting operation uses a multi-functional interval charging control device. By setting up a feed pipe 1 to transport explosives and a feed pipe 2 to transport stemming material, the device uses a switching component to achieve interval loading of explosives and stemming material. This allows for the initial loading of a portion of explosives into the borehole, followed by the loading of stemming material to create intervals, and finally the loading of the remaining explosives and sealing with stemming material. This effectively avoids the problem of excessive energy concentration in a certain area caused by a single continuous charge, allowing the explosive energy to be distributed more evenly in the rock, thus achieving uniform blasting and improving blasting efficiency.

[0017] 2. The multi-functional interval charging control device for blasting operations, through the cooperation of piston cylinder, piston rod, piston block and gas supply pipe in the pushing assembly, can send the compressed gas in the piston cylinder into the charging pipe through the gas supply pipe, and push the explosive and gunning mud out of the discharge hole evenly, thus realizing precise control of the pushing action, improving the pushing efficiency and the uniformity of the pushing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main three-dimensional structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the main planar structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the main body of this utility model.

[0021] Figure 4 This is a schematic diagram of the main cross-sectional structure of this utility model.

[0022] In the diagram: 1. Drill bit; 11. Charging tube; 12. Discharge hole; 13. Feed pipe one; 14. Feed pipe two; 15. Outer shell; 2. Switching assembly; 21. Rotating shaft; 22. Valve plate; 211. Scraper; 23. Push rod; 24. Drive plate; 25. Slide groove; 26. Control board; 28. Cylinder; 3. Pushing assembly; 31. Piston cylinder; 311. Air supply pipe; 312. Air supply check valve; 313. Air delivery check valve; 32. Piston rod; 33. Piston block; 34. Air delivery pipe; 35. Synchronizing plate; 36. Spring. Detailed Implementation

[0023] 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.

[0024] Example 1 aims to address the problem in existing open-pit mine production processes where, in steps with significant variations in rock hardness, a single continuous charge can concentrate energy in a specific area, hindering uniform blasting and thus reducing blasting efficiency. Please refer to [link to relevant documentation]. Figures 1-4 A multi-functional interval charging control device for blasting operations includes a drill bit 1 and a charging tube 11 connected to a blasting device. The charging tube 11 is inserted into the drill bit 1. Several discharge holes 12 are opened on the outer side of the charging tube 11 near the drill bit 1. The upper end of the charging tube 11 is connected to a feed pipe 13 and a feed pipe 2 14. The feed pipe 13, feed pipe 2 14 and charging tube 11 are arranged in a Y-shape. The feed pipe 13 is used to transport explosives, and the feed pipe 2 14 is used to transport blasting mud. A housing 15 is installed outside the connection between the feed pipe 13, feed pipe 2 14 and charging tube 11. A switching component 2 for switching feed pipe 13 and feed pipe 2 14 is provided inside the housing 15. A pushing component 3 is provided on the side of the charging tube 11.

[0025] The switching assembly 2 includes a rotating shaft 21 rotatably inserted into the housing 15, a valve plate 22 mounted on the outside of the rotating shaft 21, the valve plate 22 being located between the first feed pipe 13 and the second feed pipe 14, a push rod 23 for controlling it being fixedly inserted into the valve plate 22, a drive plate 24 being fixedly sleeved on the end of the push rod 23, a sliding groove 25 being opened in the drive plate 24, a control plate 26 being slidably inserted into the sliding groove 25, and a cylinder 28 being mounted on the outside of the housing 15, the output end of the cylinder 28 being fixedly connected to the bottom of the control plate 26.

[0026] The feeding assembly 3 includes a piston cylinder 31 mounted on the outer casing 15. The piston cylinder 31 is located on the side of the cylinder 28. A piston rod 32 is inserted into the piston cylinder 31, and a piston block 33 is installed at the end of the piston rod 32. The piston block 33 is located inside the piston cylinder 31. An air supply pipe 34 is connected between the bottom of the piston cylinder 31 and the drug loading tube 11. A synchronization plate 35 is mounted on the side of the control panel 26. The bottom of the synchronization plate 35 is fixedly connected to the end of the piston rod 32 away from the piston block 33. A spring 36 is sleeved on the piston rod 32. One end of the spring 36 is fixedly connected to the synchronization plate 35, and the other end of the spring 36 is fixedly connected to the end of the piston cylinder 31. An air supply pipe 311 is connected between the piston cylinder 31 and the drug loading tube 11. An air supply check valve 312 is installed in the air supply pipe 311, and an air supply check valve 313 is installed in the air supply pipe 34. A scraper 211 is mounted on the outside of the valve plate 22. The scraper 211 has inclined surfaces on both sides.

[0027] It should be added that the air replenishment check valve 312 and the air replenishment check valve 312 in this embodiment are both existing conventional technologies. Their specific structures and working principles are well known to those skilled in the art and need not be described in detail in this article.

[0028] In this embodiment: The operator moves the blasting device, with drill bit 1 connected, to the designated location on the open-pit mine bench where blasting is to be carried out. The drill bit 1 drive is activated, causing drill bit 1 to begin drilling in rock strata with significant variations in rock hardness. The depth and diameter of the borehole are precisely controlled according to the blasting design requirements to ensure that the subsequent charging and blasting effects achieve the expected results.

[0029] After drilling is completed, the operator activates cylinder 28. The output end of cylinder 28 pushes control plate 26 to slide within the groove 25 of drive plate 24. Due to the cooperation between control plate 26 and drive plate 24, drive plate 24 drives push rod 23 to rotate, which in turn causes valve plate 22 to rotate. As valve plate 22 rotates, feed pipe 13 gradually opens, while feed pipe 24 is closed. At this time, feed pipe 13 is connected to charge pipe 11, preparing for the delivery of explosives.

[0030] During the rotation of valve plate 22, scraper 211 mounted on the outside of valve plate 22 rotates together with valve plate 22. The inclined surfaces on both sides of scraper 211 help to push away any residual material that may be present during rotation, ensuring that the channels in the feed pipe and charging pipe 11 are unobstructed. Explosives enter charging pipe 11 from feed pipe 13. According to design requirements, the amount of explosives conveyed this time is 2 / 3 of the total amount of explosives. Under the action of the existing conveying equipment, the explosives flow downward along feed pipe 13 and enter the interior of charging pipe 11. Since there are several discharge holes 12 on the outside of charging pipe 11 near the drill bit 1, the explosives entering charging pipe 11 will temporarily accumulate inside charging pipe 11 and wait to be discharged.

[0031] The synchronization plate 35 on the side of the control plate 26 moves together with the control plate 26. The bottom of the synchronization plate 35 is fixedly connected to the end of the piston rod 32 away from the piston block 33. Therefore, the synchronization plate 35 will drive the piston rod 32 to move downward in the piston cylinder 31, pushing the piston block 33 to press down synchronously in the piston cylinder 31. As the piston block 33 presses down, the gas in the piston cylinder 31 is compressed, and the pressure increases. Since there is a gas supply pipe 34 connecting the bottom of the piston cylinder 31 to the charging pipe 11, and a gas supply check valve 313 is installed in the gas supply pipe 34, the compressed gas enters the charging pipe 11 through the gas supply pipe 34. The pressure generated by the gas entering the charging pipe 11 blows the explosive in the charging pipe 11 out of the discharge hole 12, and the explosive is evenly filled into the lower area of ​​the borehole.

[0032] After the explosive in the charging tube 11 is discharged, the spring 36 outside the piston rod 32 begins to function. The elastic force of the spring 36 causes the piston rod 32 to return to its original position, and the piston block 33 also moves upward synchronously with the piston rod 32, returning to its initial position.

[0033] During the resetting process of piston block 33, the pressure inside piston cylinder 31 decreases. At this time, external gas enters piston cylinder 31 through discharge port 12 and air supply pipe 311. The air supply check valve 312 installed in air supply pipe 311 ensures that gas can only enter piston cylinder 31 in one direction, preventing gas backflow and preparing for the next pushing operation.

[0034] After the first stage of explosive loading is completed, the operator controls cylinder 28 to reverse its direction. The output end of cylinder 28 drives control plate 26 to slide in the reverse direction, which in turn causes valve plate 22 to rotate in the reverse direction. The reverse rotation of valve plate 22 closes feed pipe 13 and opens feed pipe 24. At this time, feed pipe 24 is connected to charging pipe 11, preparing for the delivery of gun mud.

[0035] The gunning clay enters the charging tube 11 through the feed pipe 2 14. Under the action of the existing conveying equipment, the gunning clay enters the charging tube 11 along the feed pipe 2 14. The pushing process during the first stage of explosive loading is repeated. The cylinder 28 pushes the control plate 26, which, through the synchronization plate 35, drives the piston rod 32 and piston block 33 to move, forcing the gas in the piston cylinder 31 into the charging tube 11, pushing the gunning clay out of the discharge hole 12, filling the space above the explosive in the borehole, thus serving as a separator and seal.

[0036] After the gunning mud is loaded, the operator controls cylinder 28 again, causing cylinder 28 to move control plate 26. Control valve plate 22 rotates to open feed pipe 13 and close feed pipe 24. At this time, feed pipe 13 is connected to charging pipe 11 again, preparing for the delivery of the remaining explosives. Feed pipe 13 delivers the remaining 1 / 3 of the total explosives into charging pipe 11. The explosive ejection process from the first stage of explosive loading is repeated, using pusher assembly 3 to blow the explosives in charging pipe 11 out of discharge hole 12 and fill the top of the gunning mud.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-functional interval charging control device for blasting operations, comprising a drill bit (1) and a charging tube (11) connected to a blasting device, characterized in that: The charging tube (11) is inserted into the drill bit (1). The charging tube (11) has several discharge holes (12) on one end near the drill bit (1). The upper end of the charging tube (11) is connected to the feed tube one (13) and the feed tube two (14). The feed tube one (13), the feed tube two (14) and the charging tube (11) are arranged in a Y-shape. The feed tube one (13) is used to transport explosives, and the feed tube two (14) is used to transport gun clay. The connection between the feed tube one (13), the feed tube two (14) and the charging tube (11) is covered with a shell (15). The shell (15) is provided with a switching component (2) for switching the feed tube one (13) and the feed tube two (14). The side of the charging tube (11) is provided with a pusher component (3).

2. The multi-functional interval charging control device for blasting operations according to claim 1, characterized in that: The switching assembly (2) includes a rotating shaft (21) rotatably inserted into the housing (15), a valve plate (22) installed outside the rotating shaft (21), the valve plate (22) being located between the first feed pipe (13) and the second feed pipe (14), a push rod (23) for controlling it being fixedly inserted inside the valve plate (22), a drive plate (24) being fixedly sleeved on the end of the push rod (23), a sliding groove (25) being opened inside the drive plate (24), a control plate (26) being slidably inserted inside the sliding groove (25), a cylinder (28) being installed outside the housing (15), and the output end of the cylinder (28) being fixedly connected to the bottom of the control plate (26).

3. The multi-functional interval charging control device for blasting operations according to claim 2, characterized in that: The feeding assembly (3) includes a piston cylinder (31) mounted on the outer shell (15). The piston cylinder (31) is located on the side of the cylinder (28). A piston rod (32) is inserted into the piston cylinder (31). A piston block (33) is installed at the end of the piston rod (32). The piston block (33) is located inside the piston cylinder (31). An air supply pipe (34) is connected between the bottom of the piston cylinder (31) and the drug loading tube (11).

4. The multi-functional interval charging control device for blasting operations according to claim 3, characterized in that: A synchronization plate (35) is installed on the side of the control board (26), and the bottom of the synchronization plate (35) is fixedly connected to the end of the piston rod (32) away from the piston block (33).

5. A multi-functional interval charging control device for blasting operations according to claim 4, characterized in that: The piston rod (32) is fitted with a spring (36), one end of which is fixedly connected to the synchronizing plate (35), and the other end of which is fixedly connected to the end of the piston cylinder (31).

6. A multi-functional interval charging control device for blasting operations according to claim 3, characterized in that: A gas supply pipe (311) is connected between the piston cylinder (31) and the drug loading pipe (11). A gas supply check valve (312) is installed in the gas supply pipe (311), and a gas delivery check valve (313) is installed in the gas delivery pipe (34).

7. A multi-functional interval charging control device for blasting operations according to claim 2, characterized in that: A scraper (211) is installed on the outside of the valve plate (22), and the scraper (211) has inclined surfaces on both sides.

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