A device for preparing nano-powder by strong-constraint electric-energy-concentrating explosion

Abstract

The application relates to the technical field of electric explosion powder production, and discloses a strong-constraint energy-gathering electric explosion nanometer powder production device, which comprises an electric explosion cavity, a driving assembly is arranged on the electric explosion cavity, the driving assembly is connected with a feeding assembly in a power mode, and is intermittently connected with an insulating turntable in a power mode, a plurality of energy-gathering tubes are arranged on the insulating turntable, and a positioning assembly is further arranged in the electric explosion cavity. The application is characterized in that a falling hole is arranged on the grounding sleeve ring to retain the energy-gathering tube under the action of feeding, a high-pressure port is completely closed, only the falling hole in the grounding port is retained as the only escape channel, the convex head double screw column, the high-pressure sleeve ring and the inner electric explosion tube are connected and matched together to play a sealing locking role, the problem that a secondary escape channel is generated due to the plugging failure caused by the continuously generated high impact pressure during electric explosion to reduce the energy-gathering effect is solved, and the nanometer particle product is more refined and the particle size distribution is more uniform.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric explosion powder preparation, and particularly relates to a strong-constraint energy-gathering electric explosion device for preparing nanometer powder. BACKGROUND

[0002] Nanometer powder has irreplaceable effects in the fields of electronic devices, biological medicine and new energy sources due to its unique quantum effect, surface effect and volume effect. The electric explosion method is increasingly valued in the field of nanometer powder preparation technology due to its high energy utilization rate, simple operation, high product purity and other advantages.

[0003] In the electric explosion process, different constraint forms of raw materials will directly affect the size and particle size distribution of the nanometer particle product. Existing pipe-constraint electric explosion nanometer powder preparation devices generally adopt a mode of feeding from one end and plugging, such as the device and method for continuously preparing graphene by a belt-loading powder constraint electric explosion method disclosed in Patent No. CN114804086B, which designs a composite explosion tube. The powder belt is driven to pass through the high-voltage graphite electrode provided with a through hole matched with the powder belt under the drive of the driving mechanism, and the high-voltage graphite electrode does not completely plug the high-voltage port; such as the device for preparing nanometer powder by an ablation material pipe-constraint electric explosion method disclosed in Patent No. CN105817637B, which designs a groove type material rod, which is driven into a constraint sleeve by a reciprocating lead screw to form a constraint tube, and the constraint sleeve is used to plug the groove; such as the device for preparing low-dimensional nanometer carbon by a constraint electric explosion graphite disclosed in Patent No. CN110255530B, which designs a moving electrode body, which is driven by a reciprocating lead screw to push the constraint tube into a constraint hole, and the high-voltage electrode tip is deeply inserted into the constraint tube and cooperates with a silica gel head to seal the high-voltage electrode feeding end; such as the wire segment type pipe-constraint electric explosion spraying device disclosed in Patent No. CN118726891B, which designs an insulating constraint tube, and a high-voltage electrode conductive rod is slidably arranged at the high-voltage port of the constraint tube, and a wire feeding hole is arranged on the high-voltage electrode conductive rod. After the metal wire passes through the wire feeding hole and enters the constraint tube, the high-voltage electrode conductive rod is moved, and the wire feeding hole is away from the axis of the constraint tube to plug the high-voltage port.

[0004] It is found in actual application that the continuously generated high impact pressure during the electric explosion will cause plugging failure, a secondary escape channel is generated at the plugging position to reduce the energy concentration effect, the nanometer particle product is not fully refined, and under the high-temperature and high-pressure powder airflow scouring, a tumor is generated at the plugging position to hinder displacement, and the continuity and stability of the electric explosion process for preparing nanometer powder are further reduced.

[0005] At present, no effective solution has been proposed for the problems in the related art. SUMMARY

[0006] (I) Technical problems solved

[0007] In view of the deficiencies of the prior art, the present application provides a strong constraint energy-gathering electrothermal explosion device for preparing nano-powder, which solves the problem that the high impact pressure continuously generated during electrothermal explosion can cause plugging failure, and a secondary escape channel is generated at the plugging position to reduce the energy-gathering effect.

[0008] (II) Technical solutions

[0009] To solve the above technical problems, the present application provides the following technical solutions:

[0010] A strong constraint energy-gathering electrothermal explosion device for preparing nano-powder, comprising an electrothermal explosion cavity, a driving assembly is arranged on the electrothermal explosion cavity, the driving assembly is power-connected with a feeding assembly, and is intermittently power-connected with an insulating turntable, a plurality of energy-gathering tubes are arranged on the insulating turntable, a positioning assembly is further arranged in the electrothermal explosion cavity, and the positioning assembly is coaxially arranged with the insulating turntable, the feeding assembly is used for releasing and shearing electrothermal explosion raw materials to drop into the energy-gathering tubes before electrothermal explosion, and the positioning assembly is used for correcting and maintaining the alignment degree of the dropped electrothermal explosion raw materials and the central axis of the corresponding energy-gathering tube.

[0011] Preferably, the driving assembly comprises a sealing pipe, the sealing pipe penetrates and is fixed on the electrothermal explosion cavity, a motor is fixedly installed at one end of the sealing pipe, a dynamic sealing ring is sleeved on the rotating shaft of the motor, the dynamic sealing ring is attached to the inner wall of the sealing pipe, the rotating shaft of the motor is connected with an epitaxial shaft through a shaft coupling, so that the motor drives the epitaxial shaft to rotate, and the epitaxial shaft is power-connected with a linkage assembly.

[0012] Preferably, the linkage assembly comprises a left vertical plate and an incomplete gear, the left vertical plate is fixedly installed on one end of the sealing pipe located in the electrothermal explosion cavity, the epitaxial shaft penetrates the left vertical plate and is rotatably installed thereon, the epitaxial shaft is fixedly connected with the incomplete gear, the incomplete gear is power-connected with the feeding assembly and is intermittently power-connected with the insulating turntable.

[0013] Preferably, the feeding assembly comprises a material carrying disc, the material carrying disc is rotatably installed on the inner wall of the electrothermal explosion cavity through a support, and a reverse tension clamp is further fixedly installed on the support;

[0014] A slide rail is fixedly installed on the upper part of the left vertical plate, a sliding block is slidably installed on the slide rail, and a damping piece is arranged on the sliding block, the damping piece is used for increasing the friction between the slide rail and the sliding block.

[0015] Preferably, the damping piece comprises a T-shaped damping rod, the sliding block is provided with a mounting cavity, the T-shaped damping rod is slidably installed in the mounting cavity, a first compression spring is sleeved on the T-shaped damping rod, and the two ends of the first compression spring are fixedly arranged on the surface of the T-shaped damping rod and the mounting cavity, respectively.

[0016] Preferably, the feeding assembly further comprises a connecting rod, one end of the connecting rod is rotatably arranged at the edge of the incomplete gear, the other end of the connecting rod is rotatably arranged with a sliding rod, the sliding rod penetrates and is slidably arranged on the sliding block, and one end of the sliding rod is symmetrically rotatably arranged with a first roller;

[0017] The upper part of the sliding block is symmetrically rotatably arranged with a clamping arm, and the clamping arm is tangent to the first roller;

[0018] The clamping arm comprises two clamping shafts, the two clamping shafts are symmetrically arranged and rotatably arranged on the sliding block, one end of each clamping shaft is fixedly arranged with a first clamping arm, and the other end of each clamping shaft is fixedly arranged with a second clamping arm, the first clamping arm is used for clamping the electric heating explosive raw material, the second clamping arm is tangent to the first roller, and a first return spring is arranged between the two second clamping arms;

[0019] The feeding assembly further comprises two shearing arms, the two shearing arms are symmetrically rotatably arranged on the sliding block, a second return spring is arranged between the upper parts of the two shearing arms, and extrusion rods are fixedly arranged on the lower parts of the two sides of the sliding rail, the lower part of the shearing arm is provided with an inclined surface, and the inclined surface is used for extruding the extrusion rod to make the lower parts of the two shearing arms close to each other;

[0020] The feeding assembly further comprises a guide pipe, the guide pipe is fixedly arranged on the sliding block, and the guide pipe is coaxially arranged with the reverse stop tension clamp.

[0021] Preferably, the lower part of the left vertical plate is rotatably arranged with a transmission shaft, the transmission shaft is penetrated and fixedly connected with an insulating turntable and a complete gear, and the toothed part of the incomplete gear can be engaged with the complete gear.

[0022] Preferably, the insulating turntable is provided with a plurality of mounting grooves, and a power supply groove is formed in the side surface, and the mounting grooves and the power supply groove are in communication;

[0023] The shaped charge tube comprises a protruding double screw column;

[0024] The protruding double screw column is fixedly arranged in the mounting groove, the protruding double screw column is sleeved with a rubber pad, one end of the protruding double screw column is threadedly connected with an inner electric heating detonation tube, the other end of the protruding double screw column is threadedly connected with a high-pressure sleeve ring, one side of the high-pressure sleeve ring is attached to the step of the inner electric heating detonation tube, the inner electric heating detonation tube is sleeved with an outer reinforcing tube, one end of the inner electric heating detonation tube is threadedly connected with a grounding sleeve ring, and the grounding sleeve ring makes the outer reinforcing tube and the high-pressure sleeve ring attached in the mounting groove;

[0025] The electric explosion cavity is provided with a high-voltage end and a grounding end, the grounding end is used for contacting the grounding sleeve ring, and the high-voltage end is used for contacting the high-pressure sleeve ring in the power supply groove.

[0026] The ground sleeve ring is provided with a drop hole for dropping the sheared electric heating explosive raw material and discharging the powder after electric explosion of the electric heating explosive raw material.

[0027] Preferably, a valve port is fixedly connected through the electric explosion cavity, a right vertical plate is fixedly connected at one end of the valve port inside the electric explosion cavity, and a through hole is formed in the right vertical plate to enable the valve port to communicate with the inside of the electric explosion cavity.

[0028] Preferably, the positioning assembly comprises a support seat fixedly installed on the right vertical plate, a positioning wheel frame is slidingly installed on the support seat, a second compression spring is fixedly installed on the upper surface of the positioning wheel frame and one end of the second compression spring is fixedly installed on the support seat, and a positioning wheel is rotatably installed on the positioning wheel frame.

[0029] One end of the transmission shaft is rotatably installed on the right vertical plate, a positioning disc is fixedly installed on the transmission shaft, a plurality of positioning arc grooves corresponding to the shaped charge tube are formed in the positioning disc, and the positioning wheel is used for clamping the positioning arc grooves.

[0030] (Three) beneficial effects

[0031] Compared with the prior art, the present application provides a strong constraint shaped charge electric heating explosion device for preparing nano powder, which has the following beneficial effects:

[0032] 1. The drop hole is formed in the ground sleeve ring to retain the effect of the shaped charge tube feeding, the high-pressure port is completely closed, only the drop hole in the grounding port is the only escape channel, the high-pressure port is locked and sealed, one end of the convex double stud is threadedly connected with one end of the inner electric heating explosion tube, the purpose is to compress the rubber pad to play a sealing role, the other end of the convex double stud is threadedly connected with the high-pressure sleeve ring, one end of the high-pressure sleeve ring is fitted with the step of the inner electric heating explosion tube, the purpose is to lock the convex double stud with the rubber pad and the inner electric heating explosion tube to prevent loosening, thereby solving the problem of secondary escape channel caused by plugging failure due to continuous high impact pressure during electric heating explosion, reducing the effect of energy concentration, and making the nano particle product more refined and the particle size distribution more uniform.

[0033] 2. After the position conversion of the shaped charge tube is completed, the second compression spring will cause the positioning wheel to extrude the positioning arc groove on the positioning disc, so that the positioning wheel is always in the deepest part of the positioning arc groove, thereby limiting the position of the positioning disc, and the positioning disc and the insulating turntable are fixedly installed on the transmission shaft, thereby limiting the position of the insulating turntable, to ensure that the drop hole in the shaped charge tube under the guide tube is aligned with the guide tube, avoid the sheared and dropped electric heating explosive raw material from smoothly falling into the shaped charge tube, and ensure the continuity and stability of electric explosion.

[0034] 3、The application changes the previous mode of feeding from one end and blocking, avoids the problems of powder and airflow scouring under high temperature and high pressure, and continuous feeding blockage caused by accumulation, optimizes the feeding mode, and improves the continuity and stability of the process of preparing nano-powder by electric heating explosion. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic diagram of the three-dimensional structure of the application;

[0036] Figure 2 is a schematic diagram of the partial clamping structure of the feeding assembly of the application;

[0037] Figure 3 is a schematic diagram of the partial feeding structure of the feeding assembly of the application;

[0038] Figure 4 is a schematic diagram of the partial shearing structure of the feeding assembly of the application;

[0039] Figure 5 is a schematic diagram of the cooperation and structure of the shaped tube and the discharge terminal of the application;

[0040] Figure 6 is a schematic diagram of the structure of the shaped tube of the application.

[0041] In the figure: 1, electric explosion cavity; 2, left vertical plate; 3, material loading plate; 4, electric heating explosion raw material; 5, motor; 6, dynamic sealing ring; 7, shaft coupling; 8, outer extension shaft; 9, incomplete gear; 10, connecting rod; 11, sliding rod; 12, first roller; 13, sliding block; 14, sliding rail; 15, clamping arm; 16, first return spring; 17, T-shaped damping rod; 18, first compression spring; 19, guide pipe; 20, reverse stop tension clamp; 21, extrusion rod; 22, shearing arm; 23, second return spring; 24, complete gear; 25, insulating rotary disc; 26, positioning disc; 27, positioning wheel; 28, second compression spring; 29, support seat; 30, transmission shaft; 31, convex head double stud; 32, rubber pad; 33, high-pressure collar; 34, grounding collar; 35, inner electric heating explosion tube; 36, outer reinforcing tube; 37, high-pressure end; 38, grounding end; 39, valve port. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0043] As introduced in the background art, in order to solve the above technical problems, the present application proposes a strong constraint energy-gathering electrothermal explosion device for preparing nano-powder.

[0044] Please refer to Figures 1-6 A strong constraint energy-gathering electrothermal explosion device for preparing nano-powder, comprising an electric explosion cavity 1, a driving assembly is arranged on the electric explosion cavity 1, the driving assembly is power-connected with a feeding assembly, and is intermittently power-connected with an insulating turntable 25, a plurality of energy-gathering tubes are arranged on the insulating turntable 25, a positioning assembly is further arranged in the electric explosion cavity 1, the positioning assembly is coaxially arranged with the insulating turntable 25, the feeding assembly is used for releasing and shearing the electrothermal explosion raw material 4 to drop into the energy-gathering tube before electric explosion, and the positioning assembly is used for correcting and keeping the alignment degree of the dropped electrothermal explosion raw material 4 and the central axis of the corresponding energy-gathering tube.

[0045] In the present application, the number of energy-gathering tubes is taken as 4 as an example to describe the working principle and logic of the present application.

[0046] When the number of energy-gathering tubes is 4, the power connection of the driving assembly and the feeding assembly and the intermittent power connection of the driving assembly and the insulating turntable 25 can be understood as: when the driving assembly drives the feeding assembly to complete a feeding action, the driving assembly can only drive the insulating turntable 25 to rotate 1 / 4 turn.

[0047] Since the power connection between the driving assembly and the insulating turntable 25 is interrupted after the driving assembly drives the insulating turntable 25 to rotate, the state of the insulating turntable 25 cannot be limited at this time, therefore, the positioning assembly is used to limit the state of the insulating turntable 25 after being driven by the driving assembly, so as to ensure that the central axis of the energy-gathering tube on the insulating turntable 25 which is about to load the electrothermal explosion raw material 4 is kept aligned with the central axis of the electrothermal explosion raw material 4, so that the feeding assembly can accurately drop the sheared electrothermal explosion raw material 4 into the energy-gathering tube which is about to load the electrothermal explosion raw material 4, and at the same time, it also ensures that the energy-gathering tube which has loaded the electrothermal explosion raw material 4 can smoothly perform electric explosion powder preparation on the electrothermal explosion raw material 4.

[0048] Further, for the above-mentioned driving assembly, the driving assembly comprises a sealing tube, the sealing tube penetrates and is fixed on the electric explosion cavity 1, one end of the sealing tube is fixedly installed with a motor 5, a dynamic sealing ring 6 is sleeved on the rotating shaft of the motor 5, the dynamic sealing ring 6 is attached to the inner wall of the sealing tube, the rotating shaft of the motor 5 is connected with an extension shaft 8 through a shaft coupling 7, so that the motor 5 drives the extension shaft 8 to rotate, and the extension shaft 8 is power-connected with a linkage assembly.

[0049] The application realizes the external setting of the motor 5 relative to the electric explosion cavity 1 by setting the extension shaft 8, the shaft coupling 7 and the like in the sealing tube and setting the motor 5 outside the sealing tube, thereby ensuring the sealing effect of the electric explosion cavity. The dynamic sealing ring 6 further ensures the sealing effect in the sealing tube.

[0050] The motor 5 serves as a power output source. The motor 5 drives the extension shaft 8 to rotate through the shaft coupling 7, thereby providing power support for the operation of the feeding assembly and the insulating turntable 25 in the electric explosion cavity 1.

[0051] Further, for the linkage assembly, the linkage assembly comprises a left vertical plate 2 and an incomplete gear 9. The left vertical plate 2 is fixedly installed on one end of the sealing tube in the electric explosion cavity 1. The extension shaft 8 penetrates through the left vertical plate 2 and is rotationally installed thereon. The extension shaft 8 is fixedly connected with the incomplete gear 9. The incomplete gear 9 is power-connected with the feeding assembly and intermittently power-connected with the insulating turntable 25.

[0052] The extension shaft 8 is fixedly connected with the incomplete gear 9, so that the motor 5 drives the incomplete gear 9 to rotate through the shaft coupling 7 and the extension shaft 8, thereby enabling the incomplete gear 9 to deliver power for the feeding assembly and the insulating turntable 25.

[0053] Further, for the feeding assembly, the feeding assembly comprises a carrier disc 3. The carrier disc 3 is rotationally installed on the inner wall of the electric explosion cavity 1 through a support. An anti-back tension clamp 20 is also fixedly installed on the support.

[0054] The upper portion of the left vertical plate 2 is fixedly installed with a sliding rail 14. The sliding rail 14 is slidingly installed with a sliding block 13. A damping workpiece is arranged on the sliding block 13. The damping workpiece is used to increase the friction between the sliding rail 14 and the sliding block 13.

[0055] The damping workpiece comprises a T-shaped damping rod 17. The sliding block 13 is provided with a mounting cavity. The T-shaped damping rod 17 is slidingly installed in the mounting cavity. A first compression spring 18 is sleeved on the T-shaped damping rod 17. The two ends of the first compression spring 18 are fixedly arranged on the surface of the T-shaped damping rod 17 and the mounting cavity respectively. The feeding assembly further comprises a connecting rod 10. One end of the connecting rod 10 is rotationally arranged at the edge of the incomplete gear 9. The other end of the connecting rod 10 is rotationally installed with a sliding rod 11. The sliding rod 11 penetrates through and is slidingly installed in the sliding block 13. The one end of the sliding rod 11 is symmetrically rotationally installed with a first roller 12.

[0056] The upper portion of the sliding block 13 is symmetrically rotationally installed with a clamping arm 15. The clamping arm 15 is tangent to the first roller 12.

[0057] The clamping arm 15 comprises two clamping shafts which are symmetrically arranged and rotatably installed on the sliding block 13, one end of each clamping shaft is fixedly installed with a first clamping arm, and the other end is fixedly installed with a second clamping arm, the first clamping arm is used for clamping the electric heat explosive raw material 4, and the second clamping arm is tangent to the first roller 12, and a first return spring 16 is arranged between the two second clamping arms;

[0058] The feeding assembly further comprises two shearing arms 22 which are symmetrically rotatably installed on the sliding block 13, and a second return spring 23 is arranged between the upper portions of the two shearing arms 22, and extrusion rods 21 are fixedly installed on the lower portions of the two sides of the sliding rail 14, and the lower portions of the shearing arms 22 are provided with inclined surfaces which are used for extrusion with the extrusion rods 21 so as to make the lower portions of the two shearing arms 22 close to each other;

[0059] The feeding assembly further comprises a guide pipe 19 which is fixedly installed on the sliding block 13 and coaxially arranged with the reverse stop tension clamp 20.

[0060] The reverse stop tension clamp 20 keeps the electric heat explosive raw material 4 in a tensioned state and prevents it from rotating, and the purpose of preventing it from rotating is to avoid that the length of the electric heat explosive raw material 4 which is sheared off is insufficient to conduct current for electric explosion.

[0061] The T-shaped damping rod arranged in the top end of the sliding block 13 is in contact with the sliding rail 14, and the first compression spring 18 is extruded, when the sliding block 13 slides on the sliding rail 14, a large friction force is generated between the T-shaped damping rod and the sliding rail 14, and the purpose is to keep the sliding block 13 stationary when the clamping arm 15 clamps and releases the electric heat explosive raw material 4.

[0062] When the connecting rod 10 and the rotatable installation position of the incomplete gear 9 move from a low position to a high position during the rotation of the incomplete gear 9, the connecting rod 10 drives the sliding rod 11 to move upward, so that the first roller 12 on the sliding rod 11 rolls on the second clamping arm, so that the first return spring 16 in the stretched state promotes the two second clamping arms to approach each other under the action of tension, so that the second clamping arm drives the first clamping arm to move away from each other through the clamping shaft, so as to realize the opening action of the clamping arm 15;

[0063] Since the sliding block 13 is fixedly provided with a stop block which is located directly above the sliding rod 11, when the opening action of the clamping arm 15 is completed, the top of the sliding rod 11 is in contact with the stop block on the sliding block 13, and with the rotation of the incomplete gear 9, the sliding rod 11 drives the sliding block 13 to move upward on the sliding rail 14 against the friction force generated by the damping piece until the connecting rod 10 and the rotatable installation position of the incomplete gear 9 are at the highest position;

[0064] Subsequently, when the incomplete gear 9 continues to rotate, the rotating installation of the connecting rod 10 and the incomplete gear 9 starts to move from the highest point to the lowest point, in the process, since the friction force generated by the damping workpiece and the slide rail 14 is always greater than the pulling force of the first return spring 16, therefore, when the connecting rod 10 pulls the slide rod 11 to move downward with the rotation of the incomplete gear 9, the sliding block 13 remains stationary under the action of the friction force generated by the damping workpiece and the slide rail 14, when the slide rod 11 moves downward, the slide rod 11 spreads the second clamping arm through the two symmetrically arranged first rollers 12, so as to make the first clamping arm approach each other, realize the closing of the clamping arm 15, and realize the clamping of the electric heat explosion raw material 4.

[0065] When the clamping arm 15 is closed to realize the clamping of the electric heat explosion raw material 4, at this time, the first roller 12 on both sides of the slide rod 11 is in contact with the sliding block 13, therefore, when the slide rod 11 continues to move downward, it pulls the sliding block 13 to move downward against the friction force generated by the damping workpiece and the slide rail 14, so as to make the clamping arm 15 on the sliding block 13 pull the electric heat explosion raw material 4 to move downward through the guide pipe 19;

[0066] With the continuous rotation of the incomplete gear 9, the slide rod 11 pulls the sliding block 13 to continue to move downward, so as to realize the continuous feeding of the electric heat explosion raw material 4;

[0067] When the shearing arm 22 on the sliding block 13 is in contact with the extrusion rod 21 on the slide rail 14, with the continuous downward movement of the sliding block 13, the shearing ends of the shearing arm 22 approach each other, and the electric heat explosion raw material 4 passing through the guide pipe 19 is sheared, at this time, the rotating installation of the connecting rod 10 and the incomplete gear 9 starts to move from the highest point to the lowest point.

[0068] At this point, a feeding action is completed.

[0069] When feeding again, the shearing arm 22 gradually separates from the extrusion rod 21, so that the second return spring 23 drives the shearing arm 22 to reset, so that the shearing ends are away from each other, in preparation for the next shearing action.

[0070] And the sheared electric heat explosion raw material 4 falls into the energy-gathering pipe, ready for electric explosion.

[0071] Further, for the above-mentioned left vertical plate 2, the lower part of the left vertical plate 2 is rotatably installed with a transmission shaft 30, the transmission shaft 30 is through and fixedly connected with an insulating turntable 25 and a complete gear 24, and the toothed part of the incomplete gear 9 can be engaged with the complete gear 24.

[0072] When the toothed part of the incomplete gear 9 is about to engage with the complete gear 24, that is, when the feeding assembly is in the process of cutting off the electric heat explosive material 4, when the toothed part of the incomplete gear 9 engages with the complete gear 24, the cut-off electric heat explosive material 4 falls into the energy-gathering tube on the insulating turntable 25, at this time, the toothed part of the incomplete gear 9 drives the complete gear 24 to rotate, so that the energy-gathering tube on the insulating turntable 25 with the electric heat explosive material 4 enters the electric explosion stage, and the empty energy-gathering tube rotates directly below the guide tube 19 (that is, the uninterrupted electric heat explosive material 4), when the toothed part of the incomplete gear 9 disengages from the complete gear 24, the energy-gathering tube on the insulating turntable 25 with the electric heat explosive material 4 is in the electric explosion position, and the empty energy-gathering tube is directly below the guide tube 19, during the rotation stage of the toothed part of the incomplete gear 9 driving the complete gear 24, the incomplete gear 9 drives the sliding block 13 to move to the highest position on the sliding rail 14 through the connecting rod 10 and the sliding rod 11.

[0073] Further, for the above-mentioned insulating turntable 25, the insulating turntable 25 is provided with a plurality of installation grooves, and a power supply groove is formed on the side surface, and the installation groove and the power supply groove are in communication;

[0074] The energy-gathering tube comprises a double stud 31 with a protruding head;

[0075] The double stud 31 with a protruding head is fixedly installed in the installation groove, the double stud 31 with a protruding head is sleeved with a rubber pad 32, one end of the double stud 31 with a protruding head is threadedly connected with an inner electric heat explosive tube 35, the other end is threadedly connected with a high-pressure sleeve ring 33, one side of the high-pressure sleeve ring 33 is attached to the step of the inner electric heat explosive tube 35, the inner electric heat explosive tube 35 is sleeved with an outer reinforcing tube 36, one end of the inner electric heat explosive tube 35 is threadedly connected with a grounding sleeve ring 34, and the grounding sleeve ring 34 makes the outer reinforcing tube 36 and the high-pressure sleeve ring 33 attached in the installation groove;

[0076] The electric explosion cavity 1 is provided with a high-voltage end 37 and a grounding end 38, the grounding end 38 is used to contact the grounding sleeve ring 34, and the high-voltage end 37 is used to contact the high-pressure sleeve ring 33 in the power supply groove;

[0077] The grounding sleeve ring 34 is provided with a falling hole, and the falling hole is used to drop the cut electric heat explosive material 4 and discharge the powder after the electric heat explosive material 4 is electrically exploded.

[0078] By the design of the above-mentioned energy gathering tube, the drop-in hole is opened on the grounding collar 34 to retain the effect of the energy gathering tube under the action of the feed, while the high-pressure port is completely closed, only retaining the drop-in hole in the grounding port as the only escape channel. The locking and sealing of the high-pressure port is achieved by screwing one end of the stud of the stud bolt 31 with the inner electric explosion tube 35, which serves to compress the rubber pad 32 to achieve sealing. The other end of the stud bolt 31 is screwed with the high-pressure collar 33, and one end of the high-pressure collar 33 is fitted with the step of the inner electric explosion tube 35, which serves to lock the stud bolt 31 with the rubber pad 32 and the inner electric explosion tube 35 to prevent loosening. Thus, the problem of secondary escape channel caused by the failure of plugging under the high impact pressure generated during electric explosion, which reduces the energy gathering effect, is solved, and the nanometer particle product is more refined and the particle size distribution is more uniform.

[0079] In addition, the sealing and locking design of the energy gathering tube described in the present application avoids plugging failure under high impact pressure, and changes the feeding mode of the previous device by cooperating with the feeding assembly. The new sealing and locking design of the energy gathering tube adopted in the present application completely seals the high-pressure port, and only retains the open drop-in hole (also the material injection hole) in the grounding port, thereby effectively avoiding the problem of the existence of the accumulation of the moving electrode body caused by the existence of the gap due to the plugging of the conventional moving electrode body, reducing the frequency of stopping and cleaning the accumulation, and thus improving the continuity and stability of the process of preparing nanometer powder by electric explosion.

[0080] However, due to the above design, the drop-in hole of the energy gathering tube is small, which cannot achieve accurate and automatic feeding while avoiding the problem of plugging failure under high impact pressure, generating a secondary escape channel and reducing the energy gathering effect. Therefore, the rotation of the insulating turntable 25 corresponds to the positioning assembly, specifically:

[0081] The positioning assembly comprises a support seat 29 fixedly installed on the right vertical plate, and a positioning wheel frame slidably installed on the support seat 29. A second compression spring 28 is fixedly installed on the upper surface of the positioning wheel frame, and one end of the second compression spring 28 is fixedly installed on the support seat 29. A positioning wheel 27 is rotatably installed on the positioning wheel frame.

[0082] One end of a transmission shaft 30 is rotatably installed on the right vertical plate, and a positioning disc 26 is fixedly installed on the transmission shaft 30. A plurality of positioning arc grooves corresponding to the energy gathering tube are opened on the positioning disc 26. The positioning wheel 27 is used to be clamped with the positioning arc grooves.

[0083] When the shaped tube completes the position conversion, the second compression spring 28 will urge the positioning wheel 27 to press the positioning arc groove on the positioning disc 26, so that the positioning wheel 27 is always in the deepest part of the positioning arc groove, thereby limiting the position of the positioning disc 26, and the positioning disc 26 and the insulating rotating disc 25 are fixedly installed on the transmission shaft 30, thereby limiting the position of the insulating rotating disc 25, to ensure that the falling hole in the shaped tube under the guide tube 19 is aligned with the guide tube 19, so that the cut-off falling electric heating explosive material 4 can smoothly fall into the shaped tube, thereby ensuring the continuity and stability of the electric explosion.

[0084] That is, when the incomplete gear 9 is disengaged from the complete gear 24, the positioning wheel 27 is clamped into the cylindrical groove of the positioning disc 26, the insulating rotating disc 25 is stopped, the outer cylindrical surface of the high-pressure sleeve ring 33 of the shaped tube and the tip of the high-pressure end 37 are cut, the outer cylindrical surface of the grounding sleeve ring 34 and the tip of the grounding end 38 are cut, the discharge terminal is in the form of air gap discharge, and a pulse large current is instantaneously passed to the electric heating explosive material 4, the loop is conducted, the electric heating explosive material 4 is electrically heated and exploded, a huge shock wave pressure is generated in the electric explosion process, and the generated nanometer powder is ejected from the shaped tube with the shock wave and suspended in the electric explosion cavity 1 in the form of aerosol.

[0085] Further, for the electric explosion cavity 1, a valve port 39 is fixedly connected through the electric explosion cavity 1, a right vertical plate is fixedly connected at one end of the valve port 39 inside the electric explosion cavity 1, and a through hole is formed in the right vertical plate to communicate the valve port 39 with the inside of the electric explosion cavity 1. In addition, an air inlet valve is arranged on the opposite side of the electric explosion cavity 1 relative to the side where the valve port 39 is located, so as to facilitate the pump set connected to the valve port 39 to extract the suspended nanometer powder in the electric explosion cavity 1.

[0086] The position of the air inlet valve and the valve port 39 is arranged so that when the pump set extracts the suspended nanometer powder, a weak transverse wind beam is formed in the electric explosion cavity 1, so as to avoid the nanometer powder falling on the transmission members (incomplete gear and complete gear) in the electric explosion cavity, and the wind beam does not affect the falling of the electric heating explosive material 4. Before the electric heating explosive material 4 is sheared, the lower segment of the electric heating explosive material 4 to be cut off has already entered the falling hole of the shaped tube, and after being cut off, it will directly fall into the falling hole. Before being cut off, the presence of the guide tube 19 limits the moving direction of the electric heating explosive material 4.

[0087] Further, in order to weaken the influence of the transverse wind beam on the falling of the electric heating explosive material 4, the air inlet valve can also be arranged on the side perpendicular to the side where the valve port is located.

[0088] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for preparing nanopowders by strong confinement focused energy electric thermal explosion, comprising an electric explosion chamber (1), characterized in that: The electric explosion chamber (1) is provided with a driving assembly, and the driving assembly is connected to the feeding assembly in a power manner and is intermittently connected to the insulating turntable (25). The insulating turntable (25) is provided with a plurality of energy-gathering tubes. The electric explosion chamber (1) is also provided with a positioning assembly, and the positioning assembly is coaxially arranged with the insulating turntable (25). The feeding assembly is used to release and cut the electric heat explosion raw material (4) so ​​that it falls into the energy-gathering tube before electric explosion. The positioning assembly is used to correct and maintain the alignment of the dropped electric heat explosion raw material (4) with the central axis of the corresponding energy-gathering tube. The insulating turntable (25) is provided with a plurality of mounting slots, and a power supply slot is provided on the side thereof, and the mounting slots are connected to the power supply slots; The energy-gathering tube includes a double-headed stud (31); The convex double stud (31) is fixedly installed in the installation groove, and the convex double stud (31) is sleeved with a rubber pad (32). One end of the convex double stud (31) is threadedly connected to the inner electric thermal explosion tube (35), and the other end is threadedly connected to the high-voltage sleeve (33), and one side of the high-voltage sleeve (33) is in contact with the step of the inner electric thermal explosion tube (35). The inner electric thermal explosion tube (35) is sleeved with an outer reinforcement tube (36), and one end of the inner electric thermal explosion tube (35) is threadedly connected to a grounding sleeve (34), and the grounding sleeve (34) makes the outer reinforcement tube (36) and the high-voltage sleeve (33) fit in the installation groove; A high-voltage end (37) and a grounding end (38) are provided in the electric explosion chamber (1), wherein the grounding end (38) is used to contact the grounding ring (34), and the high-voltage end (37) is used to contact the high-voltage ring (33) in the electrification slot; The grounding collar (34) is provided with a drop-in hole, and the drop-in hole is used to drop the sheared electric heat explosion raw material (4) and discharge the powder after the electric heat explosion raw material (4) is electrically exploded.

2. The device for preparing nanopowders by strongly constrained focused energy electric thermal explosion according to claim 1, characterized in that: The driving assembly comprises a sealing tube, which passes through and is fixed on the electric explosion chamber (1); a motor (5) is fixedly mounted on one end of the sealing tube; a dynamic sealing ring (6) is sleeved on the rotating shaft of the motor (5); the dynamic sealing ring (6) is in contact with the inner wall of the sealing tube; the rotating shaft of the motor (5) is connected to an extension shaft (8) through a coupling (7) so that the motor (5) drives the extension shaft (8) to rotate; and the extension shaft (8) is dynamically connected to a linkage assembly.

3. The device for preparing nanopowders by strongly constrained focused energy electric thermal explosion according to claim 2, characterized in that: The linkage assembly includes a left vertical plate (2) and an incomplete gear (9), wherein the left vertical plate (2) is fixedly mounted on one end of the sealing tube located in the electric explosion chamber (1), and the extension shaft (8) passes through the left vertical plate (2) and is rotatably mounted therewith, wherein the extension shaft (8) is fixedly connected to the incomplete gear (9), and the incomplete gear (9) is dynamically connected to the feeding assembly and intermittently dynamically connected to the insulating turntable (25).

4. The device for preparing nanopowders by strongly confined focused energy electric thermal explosion according to claim 3, characterized in that: The feeding assembly comprises a loading tray (3), the loading tray (3) being rotatably mounted on the inner wall of the electric explosion chamber (1) via a bracket, and a backstop tensioning clamp (20) being fixedly mounted on the bracket; A slide rail (14) is fixedly mounted on the upper portion of the left vertical plate (2), a slider (13) is slidably mounted on the slide rail (14), and a damping workpiece is provided on the slider (13), and the damping workpiece is used to increase the friction between the slide rail (14) and the slider (13).

5. The device for preparing nanopowders by strongly confined focused energy electric thermal explosion according to claim 4, characterized in that: The damping workpiece includes a T-shaped damping rod (17), the slider (13) is provided with a mounting cavity, the T-shaped damping rod (17) is slidably mounted in the mounting cavity, and a first compression spring (18) is sleeved on the T-shaped damping rod (17), with two ends of the first compression spring (18) respectively fixed to the surface of the T-shaped damping rod (17) and the mounting cavity.

6. The device for preparing nanopowders by strongly confined focused energy electric thermal explosion according to claim 4, characterized in that: The feeding assembly further comprises a connecting rod (10), one end of the connecting rod (10) being rotatably mounted on the edge of the incomplete gear (9), and the other end being rotatably mounted with a sliding rod (11), the sliding rod (11) passing through and being slidably mounted on the slider (13), and one end of the sliding rod (11) being symmetrically rotatably mounted with a first roller (12); A clamping arm (15) is symmetrically mounted on the upper portion of the slider (13), and the clamping arm (15) is tangent to the first roller (12); The clamping arm (15) includes two clamping shafts, which are symmetrically arranged and rotatably mounted on the slider (13). A first clamping arm is fixedly mounted on one end of each clamping shaft, and a second clamping arm is fixedly mounted on the other end. The first clamping arm is used to clamp the electric hot explosive raw material (4), and the second clamping arm is used to be tangent to the first roller (12). A first return spring (16) is provided between the two second clamping arms. The feeding assembly further comprises two shearing arms (22), the two shearing arms (22) being symmetrically mounted on the slider (13), and a second return spring (23) being provided between the upper portions of the two shearing arms (22), and an extrusion rod (21) being fixedly mounted on the lower portions of both sides of the slide rail (14), and an inclined surface being provided on the lower portion of the shearing arm (22), the inclined surface being used for extruding with the extrusion rod (21) so as to bring the lower portions of the two shearing arms (22) closer to each other; The feeding assembly further comprises a guide tube (19), wherein the guide tube (19) is fixedly mounted on the slider (13), and the guide tube (19) is coaxially arranged with the anti-return tensioning clamp (20).

7. The device for preparing nanopowders by strongly confined focused energy electric thermal explosion according to claim 3, characterized in that: A transmission shaft (30) is rotatably mounted on the lower portion of the left vertical plate (2). An insulating turntable (25) and a complete gear (24) are passed through and fixedly connected to the transmission shaft (30). The toothed portion of the incomplete gear (9) can mesh with the complete gear (24).

8. The device for preparing nanopowders by strongly confined focused energy electric thermal explosion according to claim 7, characterized in that: A valve port (39) passes through and is fixedly connected to the electric explosion chamber (1); one end of the valve port (39) located inside the electric explosion chamber (1) is fixedly connected to a right vertical plate, and a through hole is provided on the right vertical plate to allow the valve port (39) to communicate with the interior of the electric explosion chamber (1).

9. The device for preparing nanopowders by strongly confined focused energy electric thermal explosion according to claim 8, characterized in that: The positioning assembly includes a support seat (29), the support seat (29) is fixedly mounted on the right vertical plate, and a positioning wheel frame is slidably mounted on the support seat (29), a second compression spring (28) is fixedly mounted on the upper surface of the positioning wheel frame, and one end of the second compression spring (28) is fixedly mounted on the support seat (29), and a positioning wheel (27) is rotatably mounted on the positioning wheel frame; One end of the transmission shaft (30) is rotatably mounted on the right vertical plate, and a positioning plate (26) is fixedly mounted on the transmission shaft (30). The positioning plate (26) is provided with a plurality of positioning arc grooves corresponding to the energy-gathering tubes, and the positioning wheel (27) is used to engage with the positioning arc grooves.

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