CN217818390U - Waterproof detonating device for underwater blasting - Google Patents
Waterproof detonating device for underwater blasting Download PDFInfo
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- CN217818390U CN217818390U CN202222167716.3U CN202222167716U CN217818390U CN 217818390 U CN217818390 U CN 217818390U CN 202222167716 U CN202222167716 U CN 202222167716U CN 217818390 U CN217818390 U CN 217818390U
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- sleeve
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- waterproof
- expansion
- underwater
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- 238000005422 blasting Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000010304 firing Methods 0.000 claims abstract description 28
- 230000000977 initiatory effect Effects 0.000 claims description 30
- 238000005474 detonation Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 13
- 230000014759 maintenance of location Effects 0.000 claims description 12
- 230000003139 buffering effect Effects 0.000 abstract description 7
- 230000037452 priming Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 7
- 238000004873 anchoring Methods 0.000 description 3
- 239000003721 gunpowder Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model discloses a waterproof priming device for underwater blasting relates to underwater blasting device technical field, including sleeve and fire cap, above-mentioned sleeve outer wall is provided with the inflation piece, be provided with the retaining member in the above-mentioned sleeve, holder and striker, above-mentioned retaining member includes first retaining member and second retaining member, above-mentioned holder is connected through first elastic component with first retaining member, above-mentioned striker passes through second elastic component with second retaining member and is connected, still be provided with in the above-mentioned sleeve and be used for making first elastic component have the buffering strip of keeping away from first retaining member trend, above-mentioned holder centre gripping striker is used for making second elastic component have the trend of keeping away from second retaining member; the fire cap is arranged at a position where the firing pin can strike after the second elastic piece is released; still be provided with the trigger piece that is used for cutting the buffering strip in the above-mentioned sleeve, above-mentioned trigger piece passes through rubber spare and muffjoint, has solved detonating device and has been washed out by water, and can not delay the blasting, threatens the problem of operating personnel safety.
Description
Technical Field
The utility model relates to an explosion technical field under water, concretely relates to waterproof initiating device for explosion under water.
Background
The development of hydropower stations in China tends to be high and large-scale, namely, the elevation of a building area is higher and higher, and more buildings need to be subjected to underwater controlled blasting in hydropower construction projects.
At present, the traditional drilling blasting device is generally adopted for underwater controlled blasting in hydropower construction engineering, although a blasting fuse can be burnt underwater, the use effect is influenced by long-term soaking, the ignition of the blasting fuse cannot be ensured, and the traditional drilling blasting device immediately blasts after ignition, so that an operator does not have enough time to leave the site, the life safety of the operator is threatened, and the blasting device is arranged in a drilling hole and can be flushed out by water in the drilling hole, thereby causing the incapability of blasting.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that the blasting device immediately explodes after being ignited, the operating personnel does not have enough time to withdraw from the site, the life safety of the operating personnel is threatened, and the blasting device is filled into a drill hole and can be flushed out by water in the drill hole, so that the blasting can not reach the expected purpose; or the detonating device is flushed out by water in the drill hole after being filled in the drill hole, so that the blasting cannot achieve the expected purpose.
The utility model discloses a following technical scheme realizes:
a waterproof initiation device for underwater blasting comprises a sleeve and an initiation unit arranged or partially arranged in the sleeve;
the outer wall of the sleeve is provided with an expansion piece which is expanded in water;
the sleeve is provided with a through hole, the through hole is provided with a rubber part for sealing the through hole, and the sleeve is internally provided with a trigger part which is fixedly connected with one end of the rubber part and is used for triggering the detonating unit;
a part of the expansion piece is arranged in the through hole and is connected or abutted with the other end of the rubber piece.
The rubber part is used for sealing the through holes, so that water seepage at the through holes is avoided, and the normal work of each part in the sleeve is ensured; the expansion piece expands when meeting water, so that the sleeve and the drill hole gradually form interference fit, and the blasting device is prevented from being flushed out by water in the drill hole after being installed in the drill hole; after the sleeve is in interference fit with the drill hole, the expansion piece is still expanded continuously to extrude the rubber piece, so that the trigger piece is gradually close to the detonation unit, and the detonation unit is released to complete detonation.
The expansion piece needs a certain time for expansion, so that enough time is provided for operators to evacuate from the site, and the life safety of the operators is guaranteed.
Furthermore, a first fixing piece is further arranged in the sleeve, the detonation unit further comprises a clamping piece, the clamping piece is connected with the first fixing piece through a first elastic piece, and a buffer strip used for enabling the first elastic piece to have a trend of being away from the first fixing piece is arranged on the first fixing piece.
Above-mentioned sleeve forms interference fit with the drilling after, and the inflation piece still lasts the inflation, extrudees above-mentioned rubber spare, makes above-mentioned cutting piece be close to the buffering strip gradually, cuts above-mentioned buffering strip, and the buffering strip is cut off the back, and above-mentioned first elastic component is released in the twinkling of an eye, keeps away from above-mentioned first retaining member, makes the opening grow of above-mentioned holder.
Furthermore, a second fixing piece is arranged in the sleeve, the detonation unit comprises a firing pin and a fire cap, the firing pin is connected with the second fixing piece through a second elastic piece, the second elastic piece has a trend of being far away from the second fixing piece, and the fire cap is arranged at a sleeve position which corresponds to the firing pin and can be impacted by the firing pin after the second elastic piece is released.
The position of the fire cap is preferably as follows: the distance between the second fixing piece and the second elastic piece along the extension direction of the firing pin does not exceed the sum of the lengths of the second elastic piece and the firing pin in a natural state.
After the opening of the clamping piece is enlarged, the firing pin drills out from the opening of the clamping piece, the firing pin is released, the firing pin is driven by the second elastic piece to impact the fire cap, the detonator is ignited, and detonation is completed.
Furthermore, the sleeve and the fire cap are detachably connected, preferably in a plugging and threaded connection, so that gunpowder can be conveniently filled.
Further, the sleeve is provided with a sealing ring and a first waterproof membrane which is positioned on the inner side of the sealing ring and covers the fire cap, and a second waterproof membrane is arranged at one end of the rubber member, which is connected or abutted with the expansion member.
The sealing ring, the first waterproof membrane, the sleeve and the rubber piece jointly form a sealed sleeve inner cavity, so that water is prevented from permeating into the sleeve to influence the detonation of the detonation device;
the sleeve is subjected to primary waterproof treatment by using the sealing ring, the first waterproof membrane is arranged on the inner side of the sealing ring and covers the fire cap, the water is further prevented, and the condition that the detonating device cannot reach the expected blasting effect due to water seepage is avoided.
The second waterproof membrane is arranged on the rubber piece, so that the phenomenon that water permeates into the detonating device from the rubber piece to influence the use or blasting effect of the detonating device when the rubber piece is extruded by the expansion piece is avoided.
Furthermore, the clamping part comprises a clamping part and an operating part, the clamping part is movably connected with the operating part, the clamping part is used for clamping the firing pin, the second elasticity has a trend of being far away from the second fixing part, and the operating part penetrates through the second fixing part and is connected with the first elastic part.
When the first elastic piece is far away from the first retaining piece, the operating part drives the clamping part to enter the penetrating port of the second retaining piece, one end part of the clamping part enters the penetrating port, and the angle between the two clamping rods of the clamping part is smaller and smaller, so that the opening of the clamping part is larger and larger.
Further, the outer wall of the sleeve is also provided with a water drainage groove which is longitudinally arranged along the outer wall of the sleeve.
The drainage channel discharges water in the drill hole, reduces the thrust of the water on the initiation device, and avoids the initiation device being washed away by the water in the drill hole.
Further, the water discharge grooves and the expansion pieces are alternately arranged.
When water in the discharge drilling hole, the swelling piece meets water and gradually swells, and gradually forms interference fit with the drilling hole, so that the anchoring force between the sleeve and the drilling hole is enhanced, the initiation device is further prevented from being washed away by the water in the drilling hole, and the expected blasting effect is achieved.
Further, the outer wall of the sleeve is provided with a limiting part for limiting the expansion part, and the limiting part is preferably one of a mesh cover and a vertical baffle.
The limiting part is arranged on the side surface of the expansion part and separates the expansion part from the water drainage groove, so that the expansion part expands upwards along the limiting part, the water drainage groove is prevented from being blocked when the expansion part expands, water in the drill hole cannot be discharged, the thrust of the water to the initiation device is increased, and the possibility that the initiation device is flushed out of the drill hole is increased; or,
the limiting parts are arranged on four side faces of the expansion part, so that the expansion part and the drainage groove are separated, the expansion part is prevented from expanding towards the inside of the drilled hole, the device is subjected to reverse thrust, and the possibility that the device is pushed out of the drilled hole is increased.
Furthermore, above-mentioned inflation piece outer wall still is provided with the skid resistant course, and above-mentioned skid resistant course is preferred including anti-skidding line, anti-skidding material, and above-mentioned inflation piece meets water inflation, makes above-mentioned skid resistant course outwards expand, and the skid resistant course is fixed with the drill hole wall butt, has strengthened the anchor power between above-mentioned sleeve and the drilling, has further avoided this priming device to be washed away by the water in the drilling.
Furthermore, one end of the buffer strip is connected with the first fixing piece, and the other end of the buffer strip is connected with the first elastic piece.
Avoid above-mentioned buffering strip to remove, the mistake is opened above-mentioned holder, makes the firing pin released, causes the mistake blasting to lead to the casualties, ensured operating personnel's life safety.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the outer wall of the sleeve is provided with the expansion piece, the expansion piece expands when encountering water, so that the sleeve and the drill hole are in interference fit gradually, the detonation device is prevented from being flushed out by water in the drill hole after being filled into the drill hole, and the problem that the detonation device cannot achieve the expected purpose due to the fact that the detonation device is flushed out by the water in the drill hole after being filled into the drill hole is solved;
the expansion piece needs a certain time for expansion, so that enough time is provided for operators to leave the site, the life safety of the operators is guaranteed, and the problem that the safety of the operators is threatened because the blasting device cannot perform delayed blasting is solved;
the outer wall of the sleeve is provided with an expansion piece, the sleeve is provided with a through hole, the through hole is provided with a rubber piece for sealing the through hole, and the sleeve is internally provided with a trigger piece which is fixedly connected with one end of the rubber piece and is used for triggering the initiation unit; a part of the expansion piece is arranged in the through hole and is connected or abutted with the other end of the rubber piece; the expansion piece expands when meeting water, forms interference fit with the inner wall of the drill hole gradually, the expansion piece which expands continuously extrudes the rubber piece, and the rubber piece drives the trigger piece to be close to the detonation unit to trigger the detonation unit to complete detonation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic view of an external structure provided in embodiment 1;
FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1;
FIG. 3 is a partial enlarged view of B in FIG. 2;
FIG. 4 is a schematic view of a structure of a holder according to embodiment 1;
FIG. 5 is a top view of FIG. 1;
FIG. 6 is a schematic structural view before detonation;
FIG. 7 is a schematic view of the structure during detonation;
FIG. 8 is a schematic view of the trigger member in a configuration in which the initiation device is progressively in interference fit with the borehole;
FIG. 9 is a schematic view of the trigger member being triggered while the expansion member continues to expand.
Reference numbers and corresponding part names in the drawings:
1-sleeve, 2-fire cap, 3-expansion piece, 31-limiting piece, 32-antiskid layer, 4-drainage groove, 5-clamping piece, 51-first elastic piece, 52-clamping part, 521-first supporting rod, 522-second supporting rod, 53-operating part, 61-second elastic piece, 62-firing pin, 71-first fixing piece, 72-second fixing piece, 81-sealing ring, 82-first waterproof membrane, 83-second waterproof membrane, 9-buffering strip, 10-trigger piece, 11-rubber piece and 12-detonating unit.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1
As shown in fig. 1, 2 and 3, the embodiment 1 provides a waterproof initiation device for underwater blasting, which includes a sleeve 1 and a fire cap 2, wherein an expansion member 3 is disposed on an outer wall of the sleeve 1, a retaining member, a clamping member 5 and a firing pin 62 are disposed in the sleeve 1, the retaining member includes a first retaining member 71 and a second retaining member 72, the clamping member 5 is connected with the first retaining member 71 through a first elastic member 51, the firing pin 62 is connected with the second retaining member 72 through a second elastic member 61, a buffering strip 9 for making the first elastic member 51 have a tendency to move away from the first retaining member 71 is further disposed in the sleeve 1, and the clamping member 5 clamps the firing pin 62 for making the second elastic member 61 have a tendency to move away from the second retaining member 72; the cap 2 is disposed at a position where the striker 62 can strike after the second elastic member 61 is released; the sleeve 1 is also internally provided with a trigger 10 for cutting the buffer strip 9, and the trigger 10 is connected with the sleeve 1 through a rubber part 11.
The expansion piece 3 expands when meeting water, so that the sleeve 1 and the drill hole gradually form interference fit, as shown in fig. 8, and the blasting device is prevented from being flushed out by water in the drill hole after being installed in the drill hole; after the sleeve 1 is in interference fit with the drilled hole, the expansion piece 3 continues to expand to press the rubber piece 11, so that the trigger piece 10 gradually approaches the buffer strip 9 to cut the buffer strip 9, as shown in fig. 9, after the buffer strip 9 is cut off, the first elastic piece 51 is released instantly to be away from the first retaining piece 71, so that the opening of the clamping piece 5 is opened, the firing pin 62 is released, the firing pin 62 is driven by the second elastic piece 61 to strike the fire cap 2, the detonator is ignited, and the detonation is completed.
The expansion piece 3 needs a certain time for expansion, so that enough time is provided for operators to evacuate from the site, and the life safety of the operators is guaranteed.
In a specific embodiment, the first elastic member 51 is a spring, and the second elastic member 61 is a striker spring.
In a specific embodiment, the sleeve 1 is in threaded connection with the fire cap 2, so that the gunpowder can be loaded conveniently.
In a specific embodiment, the sleeve 1 is provided with a sealing ring 81 and a first waterproof membrane 82 which is positioned inside the sealing ring 81 and covers the fire cap 2, the sealing ring 81 is subjected to a primary waterproof treatment, and the first waterproof membrane 82 is arranged on the sealing ring 81 to further prevent water, so that the detonating device is prevented from failing to reach the expected blasting effect due to water seepage.
As shown in fig. 4, in a specific embodiment, the holder 5 includes a holding portion 52 and an operating portion 53, the operating portion 53 is connected to the first elastic member 51 by passing through the second fixing member 72, the holding portion 52 has two holding rods, the holding rods include a first rod 521 and a second rod 522, the first rod 521 is movably connected to the operating portion 53, the first rod 521 is fixedly connected to the second rod 522, the first rod 521 is a straight rod, the second rod 522 is in contact with each other, the first rod 521 and the second rod 522 of the two holding rods form a holding cavity, the holding cavity is used for holding the firing pin 62, and the second elastic member 61 tends to be away from the second fixing member 72.
When the first elastic element 51 is far away from the first retention element 71, the operation portion 53 drives the first rod 521 of the clamping portion 52 to enter the through hole of the second retention element 72, and when the first rod enters the through hole of the second retention element 72, the straight rod is easier to enter, so as to control the opening and closing of the clamping element 5; when the first support rod 521 of the holder 5 enters the through hole, the angle between the first support rods 521 of the two holding rods of the holder 5 is smaller and smaller, so that the opening between the second support rods 522 is larger and larger, and when the striker 62 can pass through the opening of the holder 5, the striker 62 is instantly ejected to impact the primer 2, thereby completing the initiation.
In a specific embodiment, the outer wall of the sleeve 1 is further provided with a water drainage groove 4, the water drainage groove 4 is longitudinally arranged along the outer wall of the sleeve 1, and the water drainage groove 4 and the expansion piece 3 are alternately arranged.
The water drainage grooves 4 discharge water in the drill holes, so that the thrust of the water to the initiation device is reduced, the initiation device is prevented from being washed away by the water in the drill holes, the expansion piece 3 gradually expands when meeting the water while discharging the water in the drill holes and gradually forms interference fit with the drill holes, the anchoring force between the sleeve 1 and the drill holes is enhanced, the initiation device is further prevented from being washed away by the water in the drill holes, and the expected blasting effect is achieved.
In a particular embodiment, as shown in fig. 5, the outer wall of the sleeve 1 is provided with vertical baffles for confining the expansion member 3.
The water drainage groove 4 is prevented from being blocked when the expansion piece 3 expands, so that water in the drill hole cannot be discharged, the thrust of the water to the detonating device is increased, and the possibility that the detonating device is flushed out of the drill hole is increased.
According to the specific embodiment, the outer wall of the expansion piece 3 is further provided with anti-slip lines, the expansion piece 3 expands when encountering water, so that the anti-slip layer 32 expands outwards, the anti-slip layer 32 is fixedly abutted to the wall of the drilled hole, the anchoring force between the sleeve 1 and the drilled hole is enhanced, and the initiation device is further prevented from being washed away by the water in the drilled hole.
In a specific embodiment, the second waterproof membrane 83 is disposed at one end of the rubber member 11 connected or abutted to the expansion member 3 to prevent water from permeating into the initiation device from the rubber member 11 when the expansion member 3 presses the rubber member 11, thereby affecting the use or blasting effect of the initiation device.
In a specific embodiment, the trigger 10 is a blade.
In a specific embodiment, the expansion member 3 is made of a water stop strip material.
In a specific embodiment, the cap 2 is disposed in the extending direction of the firing pin 62, and the distance from the second retainer 72 is smaller than the sum of the lengths of the second elastic member 61 and the firing pin 62 in a natural state.
In a particular embodiment, the rubber element 11 acts like a membrane to seal the sleeve 1, so that the thrust generated by the expansion of the expansion element 3 is sufficient to overcome the friction of the rubber element 11, pushing the trigger element 10 and cutting the strip 9.
Example 2
The drilling and blasting includes the steps of drilling, charging, blasting and the like, after the drilling is completed, as shown in fig. 6, gunpowder is loaded into the fire cap 2 of the initiating device, the fire cap 2 is connected with the sleeve 1 through threads, then the initiating device to be completed is placed in a drill hole, water in the drill hole is discharged from the water discharge tank 4, the expansion piece 3 is in contact expansion with the water and gradually forms interference fit with the inner wall of the drill hole, the expansion piece 3 continuously expands to press the sleeve 1, the rubber piece 11 on the sleeve 1 is squeezed into the sleeve 1, the trigger piece 10 connected with the rubber piece 11 is gradually close to the buffer strip 9 until the buffer strip 9 is cut off, after the buffer strip 9 is cut off, as shown in fig. 7, the first elastic piece 51 is instantly released to drive the operation part 53 to move, the first support rod 521 of the clamping part 52 enters the penetrating port of the second fixing piece 72, the included angle between the first support rods 521 of the two clamping rods is gradually reduced, the distance between the second support rods 522 is gradually increased until the first support rod 522 is pressed against the second support rod 62, and the second support rod 521 can be driven by the elastic piece 62, and the second support rod 62, and the firing pin 62 is instantly hit the firing pin 62, and the second support rod is hit the fire-proof pin 62.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A waterproof initiation device for underwater blasting, characterized by comprising a sleeve (1), an initiation unit (12) disposed or partially disposed within the sleeve (1);
the outer wall of the sleeve (1) is provided with an expansion piece (3) which expands in water;
the sleeve (1) is provided with a through hole, the through hole is provided with a rubber piece (11) used for sealing the through hole, and a trigger piece (10) which is fixedly connected with one end of the rubber piece (11) and used for triggering the detonation unit is arranged in the sleeve (1);
and a part of the expansion piece (3) is arranged in the through hole and is connected or abutted with the other end of the rubber piece (11).
2. The waterproof initiation device for underwater blasting according to claim 1, wherein a first retention member (71) is further disposed in the sleeve (1), the initiation unit (12) further comprises a clamping member (5), the clamping member (5) is connected with the first retention member (71) through a first elastic member (51), and a buffer strip (9) for enabling the first elastic member (51) to have a tendency to be away from the first retention member (71) is disposed on the first retention member (71).
3. A waterproof initiation device for underwater blasting according to claim 2, characterized in that a second retention element (72) is provided in the sleeve (1), in that the initiation unit (12) comprises a firing pin (62) and a fire cap (2), in that the firing pin (62) is connected to the second retention element (72) by means of a second elastic element (61), in that the second elastic element (61) has a tendency to move away from the second retention element (72), and in that the fire cap (2) is provided in a position of the sleeve (1) corresponding to the firing pin (62) and capable of being struck by the firing pin (62) after the second elastic element (61) is released.
4. A waterproof initiation device for underwater blasting according to claim 3, characterized in that the sleeve (1) is detachably connected to the primer (2).
5. A waterproof detonating device for underwater blasts according to claim 4 characterized in that the sleeve (1) is provided with a sealing ring (81) and a first waterproof membrane (82) inside the sealing ring (81) and covering the primer (2), the end of the rubber member (11) connected or abutted with the expansion member (3) being provided with a second waterproof membrane (83).
6. The waterproof initiation device for underwater blasting according to claim 3, wherein the clamping member (5) comprises a clamping portion (52) and an operating portion (53), the clamping portion (52) is movably connected with the operating portion (53), the clamping portion (52) is used for clamping the firing pin (62), so that the second elastic member (61) has a tendency to move away from the second retention member (72), and the operating portion (53) penetrates through the second retention member (72) and is connected with the first elastic member (51).
7. The waterproof detonating device for underwater blasts according to claim 1, characterized in that the outer wall of the sleeve (1) is further provided with water drainage grooves (4), said water drainage grooves (4) being arranged longitudinally along the outer wall of the sleeve (1).
8. The waterproof detonating device for underwater blasts as claimed in claim 7, characterized in that said water drainage channels (4) are alternated with the expansion members (3).
9. A waterproof initiating device for underwater blasting according to claim 1 or 8, characterized in that the outer wall of the sleeve (1) is further provided with a limiting member (31) for limiting the expansion member (3).
10. The waterproof initiation device for underwater blasting according to claim 9, characterized in that the outer wall of the expansion piece (3) is further provided with an anti-slip layer (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222167716.3U CN217818390U (en) | 2022-08-17 | 2022-08-17 | Waterproof detonating device for underwater blasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222167716.3U CN217818390U (en) | 2022-08-17 | 2022-08-17 | Waterproof detonating device for underwater blasting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217818390U true CN217818390U (en) | 2022-11-15 |
Family
ID=83975177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222167716.3U Active CN217818390U (en) | 2022-08-17 | 2022-08-17 | Waterproof detonating device for underwater blasting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217818390U (en) |
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2022
- 2022-08-17 CN CN202222167716.3U patent/CN217818390U/en active Active
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