CN209811238U - Negative electrode adjusting device for metal nano powder preparation equipment by electric explosion method - Google Patents
Negative electrode adjusting device for metal nano powder preparation equipment by electric explosion method Download PDFInfo
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- CN209811238U CN209811238U CN201822185567.7U CN201822185567U CN209811238U CN 209811238 U CN209811238 U CN 209811238U CN 201822185567 U CN201822185567 U CN 201822185567U CN 209811238 U CN209811238 U CN 209811238U
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Abstract
The utility model relates to a negative electrode adjusting device of metal nano powder preparation equipment by an electric explosion method. The negative electrode is fixed on the electrode seat, the insulating sleeve is arranged in the electrode seat, the insulating sleeve is connected with the electrode seat through a bolt, the opening and closing electric brushes are arranged on the periphery of the electrode seat, a hole is formed in the insulating sleeve, one end of the driven shaft is inserted into the hole formed in the insulating sleeve, and the driven shaft mechanism and the driving shaft mechanism are meshed through a gear. The negative electrode adjusting device is formed by uniformly distributing 4 groups of electrode assemblies consisting of 8 electrodes along the circumference, can adjust the electrodes outside without opening an explosion chamber, reduces the auxiliary time of equipment operation, and improves the unit time productivity of powder. Meanwhile, the opening times of the explosion chamber are reduced, so that the purity of the medium gas can be ensured, and the production quality of the powder is ensured.
Description
Technical Field
The utility model discloses an it prepares the equipment field to belong to nanometer powder, is an adopt silk material electric explosion method principle to prepare the relevant mechanism of production facility of metal nanometer powder, specifically says so negative electrode adjusting device that equipment was prepared to electric explosion method metal nanometer powder.
Background
High voltage and high density current (about 10V) of tens of thousands of volts are instantaneously applied to two ends of a metal wire with a certain diameter and length7 A/cm2) The method can evaporate the metal wire into the metal smoke with the nanometer scale instantly, the speed is very high (1.4-1.7 km/s) in the metal evaporation process and the phenomena of high temperature, strong light, strong sound, strong magnetic field and the like occur, and the nanometer metal smoke with the nanometer scale is cooled and collected, so that the nanometer powder of the metal material can be obtained. The method for preparing metal nano powder by using metal wire material as raw material and utilizing high voltage and large current to instantaneously produce short circuit and explosion on the metal wire material is an electric explosion method, and the equipment for preparing nano powder by using said principle is called metal nano powder preparation equipment by using electric explosion method.
Because the wire generates short-circuit electric explosion between two electrodes with extremely large voltage difference, two phenomena occur when the electrode is close to the explosion part under the action of strong current, namely burning loss of the electrode by high temperature and adhesion of incompletely evaporated metal drops to the electrode to form accretion. The burning loss and the accretion of the electrode can change the geometric shape of the electrode to further influence the electrical parameters of the electric explosion, so that the drift of reasonable process parameters is caused, the production quality of powder is influenced, and even equipment cannot work. In practice, if the working state is affected by electrode burning loss and accretion, the machine needs to be stopped to adjust or replace the electrode, and the electric explosion equipment works under the isolated protective atmosphere when powder is produced, so that once the explosion chamber is opened to adjust the electrode, the ideal working atmosphere can be damaged by mixing air, the isolation, the vacuumizing, the gas replacement and other work of each working bin of the equipment are carried out, and the powder production efficiency and the powder production quality of the equipment are seriously affected.
Disclosure of Invention
The utility model discloses an aim at provides a negative electrode adjusting device for electric explosion method metal nano-powder production facility, can adjust, the transposition to burning loss, the serious negative electrode of long-pending tumour under the condition of not opening the explosion room, makes new electrode come into operation.
The utility model discloses a technical scheme is:
the negative electrode adjusting device for the metal nano powder preparation equipment by the electric explosion method comprises a negative electrode, an electrode seat, an opening and closing electric brush, a first insulating sleeve, a first sealing seat, a first bearing seat, a driven gear, a driven shaft, a driving gear, a driving shaft, a second bearing, a first base, a second bearing seat, a second sealing ring, a first bearing, a first sealing ring, a first sealing gland and a second sealing gland, wherein the negative electrode is fixed on the electrode seat, the first insulating sleeve is arranged in the electrode seat, the first insulating sleeve is connected with the electrode seat through a bolt, the opening and closing electric brush is arranged on the electrode seat, a hole is formed in the first insulating sleeve, one end of the driven shaft is inserted into the hole formed in the first insulating sleeve, the driven gear is arranged at the other end of the driven shaft, the driven shaft is arranged in the first bearing seat through the first bearing, and the first, the driven shaft on the left side of the first bearing seat is sleeved with a first sealing seat and a first sealing gland, a first sealing ring is arranged at the contact position of the first sealing seat and the driven shaft, the first sealing seat is connected with the first bearing seat through a bolt, the first sealing gland is connected with the first sealing seat through a bolt, the driving gear is arranged at the upper end of the driving shaft, the driving gear is meshed with the driven gear, the driving shaft is supported and arranged in the second bearing seat through a second bearing, the second bearing seat is arranged on a first base, a second sealing seat and a second sealing gland are arranged below the second bearing seat on the driving shaft, a second sealing ring is arranged at the contact position of the second sealing seat and the driving shaft, the second sealing seat is connected with the second bearing seat through a bolt, and the second sealing gland is connected.
Eight negative electrodes are provided, each two negative electrodes are in a group, the total number of the negative electrodes is four, the negative electrodes are uniformly arranged on the circumference of the electrode seat, and each group of negative electrodes are parallel and provided with a gap and are fastened on the electrode seat by a pressing block through screws; the upper half part of the negative electrode is processed into a square with four cutting edges, and the sharp corners of the cutting edges are opposite when the negative electrode is installed.
The switching electric brush is composed of an upper half electric brush and a lower half electric brush, a pin shaft fixed on the front partition board penetrates together and can rotate around the pin shaft, the upper half electric brush and the lower half electric brush are respectively provided with vertically corresponding threaded holes, a spring is sleeved outside a screw, the lower end of the screw is inserted into the threaded holes of the upper half electric brush and the lower half electric brush, the other ends of the upper half electric brush and the lower half electric brush are connected through a braided copper strip, the other end of the braided copper strip is fixed at one end of a conducting rod through a first nut, the other end of the conducting rod is connected with an external ground wire cable through a second nut, a second insulating sleeve is sleeved outside the conducting rod, a third sealing ring is arranged between the conducting rod and the second insulating sleeve, a second base is arranged outside the second insulating sleeve, and the second insulating sleeve.
The utility model has the advantages and beneficial effects that:
1. the negative electrode adjusting device is formed by uniformly distributing 4 groups of electrode assemblies consisting of 8 electrodes along the circumference, can adjust the electrodes outside without opening an explosion chamber, reduces the auxiliary time of equipment operation, and improves the unit time productivity of powder. Meanwhile, the opening times of the explosion chamber are reduced, so that the purity of the medium gas can be ensured, and the production quality of the powder is ensured.
2. This application negative pole adjusting device's electrode work position has four blades for the square, and a blade has become invalid and can rotate 90 or 180 and continue to use, has improved the electrode utilization ratio.
Drawings
FIG. 1 is a schematic diagram of the principle of electrical explosion;
FIG. 2 is a schematic view of a negative electrode adjustment apparatus;
FIG. 3 is a schematic view of a negative electrode mounting;
FIG. 4 is a schematic view of section C-C of FIG. 3;
FIG. 5 is a schematic view of section B-B of FIG. 2;
fig. 6 is a schematic view of an electrode holder.
Detailed Description
Aiming at the defects of the arrangement of the negative electrode of the original electric explosion equipment, the inventor of the application invents and creates a negative electrode adjusting device for metal nano powder preparation equipment by an electric explosion method.
The present application will now be described in detail with reference to the accompanying drawings:
as shown in fig. 1, the schematic diagram of the electrical explosion principle includes: the device comprises an explosion chamber 1, an electrode target 2, an electrode adjusting mechanism 3, a front partition plate 4, a wire feeding pipe 5, a transition chamber 6 and a rear partition plate 7.
The explosion chamber 1 is of a hollow structure, the pole target 2 is connected with a high-voltage positive pole, a negative pole clamped by the electrode adjusting mechanism is connected with a high-voltage negative pole, a metal wire serving as a raw material is driven by the wire feeding mechanism to enter the explosion chamber from a wire feeding pipe 5 and penetrate through a gap between two parallel negative poles, when the front end of the wire is close to the pole target, the metal wire between the pole target and the negative pole is subjected to short circuit explosion, the section of metal wire is evaporated into metal smoke under the action of high voltage and large current, and the metal smoke is solidified into metal nano powder after being cooled by medium gas.
The front partition plate, the rear partition plate and the tank body form a transition chamber 6, one part of the electrode adjusting mechanism is positioned in the explosion chamber 1, and the other part of the electrode adjusting mechanism is positioned in the transition chamber 6.
As shown in fig. 2, the negative electrode adjustment device is composed of the following parts: the negative electrode 8, the electrode holder 9, the opening and closing brush 10, the first insulating sleeve 11, the first seal holder 12, the first bearing seat 13, the driven gear 14, the driven shaft 15, the driving gear 16, the driving shaft 17, the second bearing 18, the first base 19, the second bearing seat 20, the second seal holder 21, the second seal ring 22, the first bearing 23, the first seal ring 24, the first seal gland 25 and the first seal gland 39.
The negative electrode 8 is fixed on the electrode holder 9, the opening and closing electric brush 10 is tightly combined with the electrode holder 9 and does not obstruct the rotation of the electrode holder, and the left end of the driven shaft 15 is connected with the electrode holder 9 into a whole through the first insulating sleeve 11 and synchronously rotates. The driven shaft 15 is supported by a first bearing 23 and arranged in a first bearing seat 13, the first bearing seat 13 is fixed on the front partition plate 4, a first sealing ring 24 is arranged in the first sealing seat 12, and a first sealing gland 25 is used for pressing the sealing ring.
The right end of the driven shaft 15 is provided with a driven gear 14, a driving gear 16 is arranged at the upper end of a driving shaft 17, the gear ratio of the driven gear 14 to the driving gear 16 is 2:1, namely the driving gear rotates for 1 circle, and the driven gear rotates for 0.5 circle. The driving shaft 17 is supported by a second bearing 18 and arranged in a second bearing seat 20, the second bearing seat 20 is installed on a first base 19, the base is installed on the side wall of the powder preparation equipment, and a second sealing ring 22 is arranged in a second sealing seat 21 and used for sealing the driving shaft 17. The tail part of the driving shaft 17 is rotated outside the transition chamber through a wrench or a hand wheel, so that the driving gear 16 can drive the driven gear 14 to rotate, the driven shaft 15, the first insulating sleeve 11, the electrode holder 9 and the negative electrode 8 are driven to rotate together, and the transposition of the negative electrode is realized.
As shown in the negative electrode installation diagram of fig. 3, there are 8 negative electrodes 8, each two of which are 1 pair, and 4 pairs in total, and each pair of negative electrodes are arranged in parallel with a gap left, and are fastened to the electrode holder 9 by a pressing block 26 via screws. The four pairs of electrodes are uniformly distributed on the circumference of the electrode holder, the upper half part of the negative electrode 8 is processed into a square with four cutting edges, and the sharp corners of each group of cutting edges are opposite when the electrode holder is installed, as shown in a sectional view of fig. 4.
As shown in fig. 5, the connection diagram of the opening/closing brush and the ground wire includes an upper half brush 27, a pin 28, a screw 29, a spring 30, a braided copper tape 31, a first nut 32, a third sealing ring 33, a conductive rod 34, a second base 35, a second insulating sleeve 36, a second nut 37, and a lower half brush 38. The upper half brush 27 and the lower half brush 38 form an opening brush, the pin shafts 28 fixed on the front clapboard 4 penetrate together and can rotate around the pin shafts, and the downward screwing screw 29 can press the arc parts of the upper half brush 27 and the lower half brush 38 to be contacted with the cylindrical surface of the electrode holder 9 through a spring. The electrode holder and the opening and closing brush are made of red copper, and the conduction of current from the explosion chamber to the outside is realized by connecting the braided copper strip 31 with the conducting rod 34. The third sealing ring 33, the conductive rod 34, the second base 35 and the second insulating sleeve 36 penetrate through holes formed in the side wall of the explosion chamber.
The conducting rod 34 is provided with a third sealing ring 33, and is mounted on the base 35 through a second insulating sleeve 36, a nut 32 is used for fixing the braided copper strip 31 on the conducting rod 33, and a second nut 37 is used for connecting with an external ground wire cable.
As shown in fig. 6, the geometry of the electrode holder is a solid of revolution, the left end face of the disc 41 is provided with a groove 40 for positioning the negative electrode (see fig. 3), the cylindrical surface of the neck 42 is used for contacting with the opening and closing brush, the inner hole 44 is used for installing the first insulating sleeve 11, and the screw hole 43 is used for fixing the insulating sleeve; the left end face screw hole 45 is used for fixing a protective cover (the protective cover is not shown in the figure), and the screw hole 46 is used for connecting the pressing block 26.
The working process is as follows:
1. the tail part of the driving shaft 17 is rotated externally through a wrench or a hand wheel, so that the driving gear 16 can drive the driven gear 14 to rotate, the driven shaft 15, the first insulating sleeve 11, the electrode holder 9 and the negative electrode 8 are driven to rotate together, and the transposition of the negative electrode is realized.
2. The number of the negative electrodes is 8, every two negative electrodes form an electrode group, the number of the electrode groups is 4, the electrodes in the group are symmetrical left and right relative to the wire feeding pipe 5 when the electrodes are adjusted, namely, the distance between the cutting edge of the negative electrode and the wire outlet of the wire feeding pipe is equal, and the electrodes can be observed through an explosion chamber sight glass.
3. If the accumulation or burning of the cutting edge of one group of electrodes seriously affects the work of the equipment in the working process, the wire feeding is stopped, the high-voltage power supply is closed, the residual electricity of the capacitor is discharged, and then the next group of electrodes are rotated to the working position through the negative electrode adjusting device.
4. If 4 groups of negative electrodes cannot work after working for a period of time, the machine is stopped according to the operation rules, the explosion chamber is opened from an observation mirror, a pressing block for pressing the electrodes is loosened, the negative electrodes are rotated by 90 degrees or 180 degrees, new cutting edges are opposite and fastened, and the machine can continue to work.
Claims (3)
1. A negative electrode adjusting device for metal nano powder preparation equipment by an electric explosion method is characterized in that: the negative electrode adjusting device comprises a negative electrode (8), an electrode seat (9), an opening and closing brush (10), a first insulating sleeve (11), a first sealing seat (12), a first bearing seat (13), a driven gear (14), a driven shaft (15), a driving gear (16), a driving shaft (17), a second bearing (18), a first base (19), a second bearing seat (20), a second sealing seat (21), a second sealing ring (22), a first bearing (23), a first sealing ring (24), a first sealing gland (25) and a second sealing gland (39), wherein the negative electrode (8) is fixed on the electrode seat (9), the first insulating sleeve (11) is arranged in the electrode seat (9), the first insulating sleeve (11) is connected with the electrode seat (9) through bolts, the opening and closing brush (10) is arranged on the electrode seat (9), and a hole is formed in the first insulating sleeve (11), one end of a driven shaft (15) is inserted into a hole formed in a first insulating sleeve (11), a driven gear (14) is installed at the other end of the driven shaft (15), the driven shaft (15) is supported and arranged in a first bearing seat (13) through a first bearing (23), the first bearing seat (13) is fixed on a front partition plate (4), a first sealing seat (12) and a first sealing gland (25) are sleeved on the driven shaft (15) on the left side of the first bearing seat (13), a first sealing ring (24) is installed at the contact position of the first sealing seat (12) and the driven shaft (15), the first sealing seat (12) is in bolted connection with the first bearing seat (13), the first sealing gland (25) is in bolted connection with the first sealing seat (12), a driving gear (16) is installed at the upper end of the driving shaft (17), the driving gear (16) is meshed with the driven gear (14), the driving shaft (17) is supported and arranged in a second bearing seat (20) through a second bearing (18), second bearing frame (20) are installed on first base (19), are equipped with second seal receptacle (21) and second gland (39) below second bearing frame (20) on driving shaft (17), and second seal ring (22) are equipped with in second seal receptacle (21) and driving shaft (17) contact department, second seal receptacle (21) and second bearing frame (20) bolted connection, second gland (39) and second seal receptacle (21) bolted connection.
2. The negative electrode adjusting device for metal nano powder preparation equipment by the electric explosion method according to claim 1, which is characterized in that: eight negative electrodes (8) are provided, every two negative electrodes are in a group, the total number of the negative electrodes is four, the negative electrodes are uniformly arranged on the circumference of the electrode seat (9), each group of negative electrodes are parallel and provided with gaps, and a pressing block (26) is fastened on the electrode seat (9) through screws; the upper half part of the negative electrode (8) is processed into a square with four cutting edges, and the sharp corners of the cutting edges are opposite when the negative electrode is installed.
3. The negative electrode adjusting device for metal nano powder preparation equipment by the electric explosion method according to claim 1, which is characterized in that: the switching electric brush consists of an upper half electric brush (27) and a lower half electric brush (38), a pin shaft (28) fixed on the front clapboard (4) penetrates together and can rotate around the pin shaft, the upper half electric brush (27) and the lower half electric brush (38) are respectively provided with a threaded hole corresponding to each other up and down, a spring (30) is sleeved outside a screw (29), the lower end of the screw (29) is inserted into the threaded holes of the upper half electric brush (27) and the lower half electric brush (38), the other ends of the upper half electric brush (27) and the lower half electric brush (38) are connected through a braided copper strip (31), the other end of the braided copper strip (31) is fixed at one end of a conductive rod (34) through a first nut (32), the other end of the conductive rod (34) is connected with an external ground wire cable through a second nut (37), a second insulating sleeve (36) is sleeved outside the conductive rod (34), and a third sealing ring (33) is arranged between the conductive rod (34) and, a second base (35) is arranged outside the second insulating sleeve (36), and the second insulating sleeve (36) is connected with the second base (35) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822185567.7U CN209811238U (en) | 2018-12-25 | 2018-12-25 | Negative electrode adjusting device for metal nano powder preparation equipment by electric explosion method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822185567.7U CN209811238U (en) | 2018-12-25 | 2018-12-25 | Negative electrode adjusting device for metal nano powder preparation equipment by electric explosion method |
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| Publication Number | Publication Date |
|---|---|
| CN209811238U true CN209811238U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822185567.7U Active CN209811238U (en) | 2018-12-25 | 2018-12-25 | Negative electrode adjusting device for metal nano powder preparation equipment by electric explosion method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115155761A (en) * | 2022-07-13 | 2022-10-11 | 佛山市兆冠科技咨询服务有限公司 | Preparation process, preparation device and application of large-specific-surface-area ultrafine powder |
-
2018
- 2018-12-25 CN CN201822185567.7U patent/CN209811238U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115155761A (en) * | 2022-07-13 | 2022-10-11 | 佛山市兆冠科技咨询服务有限公司 | Preparation process, preparation device and application of large-specific-surface-area ultrafine powder |
| CN115155761B (en) * | 2022-07-13 | 2024-04-23 | 佛山市兆冠科技咨询服务有限公司 | Preparation process, preparation device and application of ultrafine powder with large specific surface area |
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