CN220601022U - Environment-friendly silencing device for natural gas recovery - Google Patents
Environment-friendly silencing device for natural gas recovery Download PDFInfo
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- CN220601022U CN220601022U CN202322360546.5U CN202322360546U CN220601022U CN 220601022 U CN220601022 U CN 220601022U CN 202322360546 U CN202322360546 U CN 202322360546U CN 220601022 U CN220601022 U CN 220601022U
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- double
- assembly
- natural gas
- main body
- recovery
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- 238000005380 natural gas recovery Methods 0.000 title claims abstract description 25
- 230000030279 gene silencing Effects 0.000 title claims abstract description 9
- 238000011084 recovery Methods 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 50
- 230000005540 biological transmission Effects 0.000 claims description 23
- 241000883990 Flabellum Species 0.000 claims description 18
- 230000007613 environmental effect Effects 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 244000309464 bull Species 0.000 description 7
- 239000003345 natural gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Abstract
The utility model discloses an environment-friendly silencing device for natural gas recovery, which belongs to the technical field of natural gas recovery and comprises a clamping mechanism, wherein the clamping mechanism comprises a shell, a double-shaft driving assembly, two clamping pieces and a recovery main body, the double-shaft driving assembly is rotationally inserted into the side surface of the shell, the upper ends and the lower ends of the two clamping pieces are both in threaded connection with the outer wall of the double-shaft driving assembly, the recovery main body is arranged in the shell, and the recovery main body is arranged between the two clamping pieces.
Description
Technical Field
The utility model relates to the technical field related to natural gas recovery, in particular to an environment-friendly silencing device for natural gas recovery.
Background
The existing natural gas recovery device can generate noise for internal elements of the natural gas recovery device along with long-time use in a high-temperature state, and the normal use of the natural gas recovery device can be influenced. Therefore, we propose an environment-friendly muffler for natural gas recovery to solve the problems presented in the background art.
The present patent (bulletin number: CN 217982822U) discloses an environmental protection silencing device for natural gas recovery, including box, recovery main part, the inside of box is provided with heat radiation structure, heat radiation structure includes: the heat dissipation through hole is formed in the inner wall of the box body, the two partition plates are fixedly connected to the inner wall of the box body, the two heat dissipation fans are respectively formed in one side of each partition plate, the heat dissipation through hole is used for refrigerating the recovery main body through the cold end of the semiconductor refrigerating piece, and hot air generated by the hot end of the semiconductor refrigerating piece is taken out through the formed heat dissipation through hole by the heat dissipation fans, so that a good heat dissipation effect is achieved on the recovery main body placed at the top of the support plate. However, the technical scheme still has the defects, and the technical scheme is as follows:
when the device is used, only the bottom of the recovery main body can be subjected to heat dissipation treatment through the semiconductor refrigerating sheet, and the heat of the side wall of the recovery main body is difficult to rapidly dissipate, so that the heat dissipation effect of the recovery main body is poor. To this end, we propose an environmentally friendly muffler for natural gas recovery to solve the above mentioned problems.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.
Therefore, the utility model aims to provide an environment-friendly silencing device for natural gas recovery, which can solve the problem that the heat of the side wall of a recovery main body is difficult to quickly dissipate and the heat dissipation effect of the recovery main body is poor because the bottom of the recovery main body can only be subjected to heat dissipation treatment through a semiconductor refrigerating piece when the traditional device is used.
In order to solve the technical problems, the utility model provides an environment-friendly silencing device for natural gas recovery, which adopts the following technical scheme: the device comprises a clamping mechanism, a clamping mechanism and a recovery mechanism, wherein the clamping mechanism comprises a shell, a double-shaft driving assembly, two clamping pieces and a recovery main body, the double-shaft driving assembly is rotationally inserted into the side face of the shell, the upper end and the lower end of each clamping piece are both in threaded sleeve connection with the outer wall of the double-shaft driving assembly, the recovery main body is arranged in the shell, and the recovery main body is arranged between the two clamping pieces;
the cooling assembly is arranged at the bottom of the shell, the blade assembly is rotationally inserted into the recycling main body, the air guide pipe is fixedly inserted into the bottom of the shell, the assembly ring is fixedly connected into the air guide pipe, the blade assembly is rotationally inserted into the assembly ring, and the lower end of the blade assembly extends to the inside of the cooling assembly and is connected with the blade assembly through the transmission member.
Through adopting above-mentioned technical scheme, this scheme promotes two holders synchronous movement and carries out the centre gripping to retrieving the main part through rotatory biax drive assembly, carries out the centre gripping to retrieving the main part through the holder and is convenient for reduce the possibility of producing noise when retrieving the main part operation, and the air current is convenient for drive the paddle subassembly rotation when natural gas is inside through retrieving the main part, is convenient for drive the synchronous rotation of flabellum subassembly through the driving medium simultaneously, is convenient for carry the air conditioning in the cooling module through the flabellum subassembly to be convenient for carry out the cooling treatment to holder and retrieving the main part.
Optionally, the biax drive assembly includes two double-threaded rods, two first drive wheels, first drive chain and carousel, two the double-threaded rods all rotate the grafting in the side of casing, two the first drive wheel is fixed respectively to cup joint at the outer wall of two double-threaded rods, two the first drive wheel is connected through first drive chain, carousel fixed connection is kept away from the one end of casing at the double-threaded rod, the screw thread direction of double-threaded rod left end is opposite rather than the screw thread direction of right-hand member.
Through adopting above-mentioned technical scheme, this scheme is convenient for drive the rotation of double-threaded rod through the carousel and makes two double-threaded rod synchronous rotations through two first drive wheels and first drive chain cooperation, makes two holders simultaneously to inboard or outside removal through double-threaded rod rotation.
Optionally, the clamping piece includes two internal thread pieces and splint, two the internal thread piece sets up respectively in splint's top and bottom, two the internal thread piece is threaded respectively and is cup jointed at the outer wall of two double-threaded bars.
Through adopting above-mentioned technical scheme, this scheme drives splint removal through the internal thread piece through the rotation of double-threaded rod promotion to be convenient for carry out the centre gripping to retrieving the main part through splint.
Optionally, the splint is kept away from one side of retrieving the main part and is provided with the fin, the fin is in the upside of flabellum subassembly, retrieve the outer wall and the splint butt of main part.
Through adopting above-mentioned technical scheme, this scheme is convenient for absorb splint and the heat of retrieving main part lateral wall through the fin, is convenient for accelerate the cooling rate of fin through the flabellum subassembly simultaneously.
Optionally, the cooling assembly includes a cooling box and a refrigerator, the cooling box is disposed at the bottom of the housing, and the refrigerator is disposed inside the cooling box.
Through adopting above-mentioned technical scheme, this scheme is convenient for make air conditioning and to retrieve the bottom of main part and cool down the processing through the refrigerator to be convenient for blow the cooling to the fin on through the flabellum subassembly.
Optionally, the paddle subassembly includes bull stick and a plurality of paddle piece, the bull stick rotates the grafting in the inside of retrieving the main part, a plurality of the paddle piece equidistance is the outer wall that the annular distributes in the bull stick upper end, paddle piece and the inner wall sliding connection of retrieving the main part.
Through adopting above-mentioned technical scheme, this scheme is convenient for drive the bull stick rotation through a plurality of paddle piece when natural gas air current passes through the recovery main part.
Optionally, the transmission piece includes two second drive wheels and second drive chain, and two second drive wheels are fixed respectively cup joints the outer wall of bull stick lower extreme and the outer wall of flabellum subassembly lower extreme, and two second drive wheels are connected through the second drive chain.
Through adopting above-mentioned technical scheme, this scheme is convenient for drive the synchronous rotation of flabellum subassembly when promoting the bull stick rotation through two second drive wheels and second drive chain cooperation to be convenient for accelerate the cooling rate of fin.
Optionally, the flabellum subassembly includes circle roller and a plurality of flabellum piece, the circle roller rotates the grafting in the side of assembly ring, a plurality of the flabellum piece equidistance is the outer wall of annular distribution in the circle roller upper end.
Through adopting above-mentioned technical scheme, this scheme is convenient for drive roller and a plurality of flabellum rotatory through the driving medium when the bull stick is rotatory to in being convenient for carry the air conditioning to the fin through the flabellum, thereby be convenient for accelerate the cooling rate of fin.
In summary, the present utility model includes at least one of the following beneficial effects: 1. when natural gas passes through the inside of the recovery main body, the air flow is convenient to drive the blade assembly to rotate, meanwhile, the transmission piece is convenient to drive the blade assembly to synchronously rotate, and cold air in the cooling assembly is convenient to convey through the blade assembly, so that the clamping piece and the recovery main body are convenient to cool, and the cooling assembly is convenient to cool the bottom of the recovery main body, so that the cooling effect of the recovery main body is better;
2. two clamping pieces are driven to synchronously move and clamp the recovery main body through the rotating double-shaft driving assembly, the possibility of noise generated when the recovery main body runs is reduced through clamping the recovery main body through the clamping pieces, and the recovery main body is clamped and fixed more conveniently.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a cross-sectional view of a three-dimensional structure of the present utility model;
fig. 3 is a partial perspective view of the present utility model.
Reference numerals illustrate: 100. a clamping mechanism; 101. a housing; 102. a dual-shaft drive assembly; 102a, double threaded rod; 102b, a first driving wheel; 102c, a first drive chain; 102d, a turntable; 103. a clamping member; 103a, an internal thread block; 103b, splints; 103c, heat sinks; 104. a recovery main body;
200. a heat dissipation mechanism; 201. a cooling assembly; 201a, a cooling box; 201b, a refrigerator; 202. a blade assembly; 202a, a rotating rod; 202b, paddle blades; 203. a transmission member; 203a, a second driving wheel; 203b, a second drive chain; 204. an air guide pipe; 205. a mounting ring; 206. a fan blade assembly; 206a, a round roller; 206b, fan blades.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-3.
Referring to fig. 1-3, in this embodiment, in order to solve the problem that the heat of the side wall of the recovery main body is difficult to be rapidly dissipated only by the bottom of the recovery main body through the semiconductor refrigerating sheet when the conventional device is used, the utility model discloses an environment-friendly silencing device for natural gas recovery,
including fixture 100, it includes casing 101, biax drive assembly 102, two holders 103 and retrieves main part 104, and biax drive assembly 102 rotates the grafting in the side of casing 101, and the equal screw thread in both ends cup joints the outer wall at biax drive assembly 102 about two holders 103, is convenient for control holder 103 removal through rotatory biax drive assembly 102.
The recovery main body 104 is arranged in the shell 101, the recovery main body 104 is arranged between the two clamping pieces 103, the two clamping pieces 103 are driven to synchronously move and clamp the recovery main body 104 by rotating the double-shaft driving assembly 102, and the recovery main body 104 is clamped by the clamping pieces 103 so as to reduce the possibility of noise generated when the recovery main body 104 runs
The heat dissipation mechanism 200 comprises a cooling assembly 201, a blade assembly 202, a transmission member 203, an air guide pipe 204, an assembly ring 205 and a fan blade assembly 206, wherein the cooling assembly 201 is arranged at the bottom of the shell 101, the blade assembly 202 is rotationally inserted into the recovery main body 104, the air guide pipe 204 is fixedly inserted into the bottom of the shell 101, and cold air in the cooling assembly 201 is conveniently discharged into the shell 101 through the air guide pipe 204.
The assembly ring 205 is fixedly connected in the air guide pipe 204, the fan blade assembly 206 is rotationally inserted in the assembly ring 205, the lower end of the blade assembly 202 extends to the inside of the cooling assembly 201 and is connected with the fan blade assembly 206 through the transmission piece 203, the cooling assembly 201 comprises a cooling box 201a and a refrigerating machine 201b, the cooling box 201a is arranged at the bottom of the shell 101, the refrigerating machine 201b is arranged in the cooling box 201a, cold air is conveniently manufactured through the refrigerating machine 201b and the bottom of the recovery main body 104 is subjected to cooling treatment, and cooling is conveniently blown onto the cooling fins 103c through the fan blade assembly 206, so that the cooling speed of the cooling fins 103c is conveniently accelerated.
The specific working principle is as follows: when natural gas passes through the inside of the recovery main body 104, the air flow is convenient to drive the blade assembly 202 to rotate, meanwhile, the transmission piece 203 is convenient to drive the blade assembly 206 to synchronously rotate, and cold air in the cooling assembly 201 is convenient to be conveyed through the blade assembly 206, so that the clamping piece 103 and the recovery main body 104 are convenient to be cooled, and the bottom of the recovery main body 104 is convenient to be cooled through the cooling assembly 201.
1-3, in order to solve the problem that the existing part of the device is troublesome in clamping the recoverer in this embodiment, based on the same concept as the first embodiment, the environment-friendly silencer for natural gas recovery further includes:
the double-shaft driving assembly 102 comprises two double-threaded rods 102a, two first driving wheels 102b, a first driving chain 102c and a rotary table 102d, wherein the two double-threaded rods 102a are respectively and rotatably inserted into the side surfaces of the shell 101, the two first driving wheels 102b are respectively and fixedly sleeved on the outer walls of the two double-threaded rods 102a, the two first driving wheels 102b are connected through the first driving chain 102c, the rotary table 102d is fixedly connected to one end of the double-threaded rods 102a far away from the shell 101, the screw thread direction of the left end of the double-threaded rods 102a is opposite to the screw thread direction of the right end of the double-threaded rods 102a, the rotary table 102d is convenient to drive the double-threaded rods 102a to rotate, the two double-threaded rods 102a are matched with the first driving chain 102c through the two first driving wheels 102b to enable the two clamping pieces 103 to simultaneously move inwards or outwards, when the clamping pieces 103 move inwards, the clamping pieces 103 are convenient to clamp and fix the recovery main body 104, and otherwise the recovery main body 104 loses limit, so that an operator can conveniently disassemble the recovery main body 104.
The clamping piece 103 comprises two internal thread blocks 103a and a clamping plate 103b, the two internal thread blocks 103a are respectively arranged at the top and the bottom of the clamping plate 103b, the two internal thread blocks 103a are respectively in threaded connection with the outer walls of the two double threaded rods 102a, the clamping plate 103b is driven to move by the internal thread blocks 103a through rotation of the double threaded rods 102a, so that the clamping plate 103b is convenient for clamping the recovery main body 104, and the possibility of noise generated during operation of the recovery main body 104 is reduced.
The splint 103b is kept away from one side of retrieving the main part 104 and is provided with fin 103c, and fin 103c is in the upside of flabellum subassembly 206, retrieves the outer wall of main part 104 and splint 103b butt, is convenient for absorb the heat of splint 103b and retrieving the main part 104 lateral wall through fin 103c, is convenient for accelerate fin 103 c's cooling rate through flabellum subassembly 206 simultaneously, therefore fin 103 c's heat absorption effect is better.
The specific working principle is as follows: the double-threaded rod 102a is conveniently driven to rotate through the turntable 102d, and the two double-threaded rods 102a are driven to synchronously rotate through the cooperation of the two first driving wheels 102b and the first driving chain 102 c;
the double-threaded rod 102a rotates to drive the internal thread block 103a to drive the clamping plate 103b to move, so that the clamping plate 103b is convenient for clamping the recovery main body 104, the possibility of noise generated when the recovery main body 104 runs is reduced, and the clamping of the recovery main body 104 is more convenient.
Referring to fig. 1-3, in order to solve the problem that the existing part of the apparatus needs to use an additional driving device to drive a fan and other mechanisms to operate when cooling, the environment-friendly silencer for natural gas recovery further includes, based on the same concept as the first embodiment:
the paddle assembly 202 comprises a rotating rod 202a and a plurality of paddle blades 202b, the rotating rod 202a is rotationally inserted into the recovery main body 104, the plurality of paddle blades 202b are equidistantly distributed on the outer wall of the upper end of the rotating rod 202a in a ring shape, the paddle blades 202b are slidably connected with the inner wall of the recovery main body 104, and when the natural gas flow passes through the recovery main body 104, the rotating rod 202a is conveniently driven to rotate by the plurality of paddle blades 202 b.
The transmission member 203 comprises two second transmission wheels 203a and a second transmission chain 203b, the two second transmission wheels 203a are fixedly sleeved on the outer wall of the lower end of the rotating rod 202a and the outer wall of the lower end of the fan blade assembly 206 respectively, the two second transmission wheels 203a are connected through the second transmission chain 203b, and the two second transmission wheels 203a and the second transmission chain 203b are matched to facilitate the fan blade assembly 206 to synchronously rotate when the rotating rod 202a is driven to rotate, so that the cooling speed of the cooling fin 103c is conveniently increased, and no additional driving equipment is needed when the fan blade assembly 206 operates.
The fan blade assembly 206 includes a roller 206a and a plurality of fan blades 206b, the roller 206a is rotationally inserted on the side surface of the assembly ring 205, the plurality of fan blades 206b are equidistantly distributed on the outer wall of the upper end of the roller 206a in a ring shape, when the rotating rod 202a rotates, the roller 206a and the plurality of fan blades 206b are conveniently driven to rotate by the transmission member 203, so that cold air is conveniently conveyed into the cooling fin 103c by the fan blades 206b, and the cooling speed of the cooling fin 103c is conveniently increased.
The specific working principle is as follows: when the natural gas flow passes through the recovery main body 104, the rotating rod 202a is conveniently driven to rotate by the plurality of paddle blades 202b, and the rotating rod 202a is driven to rotate by the cooperation of the two second driving wheels 203a and the second driving chain 203 b;
when the rotating rod 202a rotates, the transmission piece 203 is convenient to drive the round roller 206a and the fan blades 206b to rotate, so that cold air is convenient to be conveyed into the cooling fin 103c through the fan blades 206b, the cooling speed of the cooling fin 103c is convenient to be increased, and no additional driving equipment is needed when the fan blade assembly 206 operates.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. An environmental protection silencing device for natural gas recovery, its characterized in that: comprising the steps of (a) a step of,
the clamping mechanism (100) comprises a shell (101), a double-shaft driving assembly (102), two clamping pieces (103) and a recovery main body (104), wherein the double-shaft driving assembly (102) is rotationally inserted into the side face of the shell (101), the upper end and the lower end of each clamping piece (103) are both in threaded sleeve connection with the outer wall of the double-shaft driving assembly (102), the recovery main body (104) is arranged in the shell (101), and the recovery main body (104) is arranged between the two clamping pieces (103);
the utility model provides a cooling mechanism (200), it includes cooling module (201), paddle subassembly (202), driving medium (203), guide duct (204), assembly ring (205) and flabellum subassembly (206), cooling module (201) set up in casing (101) bottom, paddle subassembly (202) rotate and peg graft in the inside of retrieving main part (104), guide duct (204) are fixed to be pegged graft in the bottom of casing (101), assembly ring (205) fixed connection is in the inside of guide duct (204), flabellum subassembly (206) rotate and peg graft in the inside of assembly ring (205), the lower extreme of paddle subassembly (202) extends to cooling module (201) inside and is connected through driving medium (203) with flabellum subassembly (206).
2. An environmental protection muffler device for natural gas recovery as defined in claim 1, wherein: the double-shaft driving assembly (102) comprises two double-threaded rods (102 a), two first driving wheels (102 b), a first driving chain (102 c) and a rotary table (102 d), wherein two double-threaded rods (102 a) are respectively and rotationally inserted into the side face of the shell (101), two first driving wheels (102 b) are respectively and fixedly sleeved on the outer walls of the two double-threaded rods (102 a), two first driving wheels (102 b) are connected through the first driving chain (102 c), the rotary table (102 d) is fixedly connected to one end, far away from the shell (101), of the double-threaded rods (102 a), and the screw direction of the left end of the double-threaded rods (102 a) is opposite to that of the right end of the double-threaded rods.
3. An environmental protection muffler device for natural gas recovery as defined in claim 2, wherein: the clamping piece (103) comprises two internal thread blocks (103 a) and clamping plates (103 b), the two internal thread blocks (103 a) are respectively arranged at the top and the bottom of the clamping plates (103 b), and the two internal thread blocks (103 a) are respectively in threaded sleeve connection with the outer walls of the two double threaded rods (102 a).
4. An environmental protection muffler for natural gas recovery as defined in claim 3, wherein: the side of splint (103 b) keeping away from retrieving main part (104) is provided with fin (103 c), fin (103 c) are in the upside of flabellum subassembly (206), the outer wall and the splint (103 b) butt of retrieving main part (104).
5. An environmental protection muffler device for natural gas recovery as defined in claim 1, wherein: the cooling assembly (201) comprises a cooling box (201 a) and a refrigerator (201 b), wherein the cooling box (201 a) is arranged at the bottom of the shell (101), and the refrigerator (201 b) is arranged inside the cooling box (201 a).
6. An environmental protection muffler device for natural gas recovery as defined in claim 1, wherein: the paddle assembly (202) comprises a rotating rod (202 a) and a plurality of paddle blades (202 b), wherein the rotating rod (202 a) is rotationally inserted into the recovery main body (104), the plurality of paddle blades (202 b) are annularly distributed on the outer wall of the upper end of the rotating rod (202 a) at equal intervals, and the paddle blades (202 b) are in sliding connection with the inner wall of the recovery main body (104).
7. An environmental protection muffler for natural gas recovery as defined in claim 6, wherein: the transmission piece (203) comprises two second transmission wheels (203 a) and a second transmission chain (203 b), the two second transmission wheels (203 a) are fixedly sleeved on the outer wall of the lower end of the rotating rod (202 a) and the outer wall of the lower end of the fan blade assembly (206), and the two second transmission wheels (203 a) are connected through the second transmission chain (203 b).
8. An environmental protection muffler device for natural gas recovery as defined in claim 1, wherein: the fan blade assembly (206) comprises a round roller (206 a) and a plurality of fan blades (206 b), wherein the round roller (206 a) is rotationally inserted on the side face of the assembly ring (205), and the fan blades (206 b) are distributed on the outer wall of the upper end of the round roller (206 a) in an annular mode at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322360546.5U CN220601022U (en) | 2023-08-31 | 2023-08-31 | Environment-friendly silencing device for natural gas recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322360546.5U CN220601022U (en) | 2023-08-31 | 2023-08-31 | Environment-friendly silencing device for natural gas recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220601022U true CN220601022U (en) | 2024-03-15 |
Family
ID=90174947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322360546.5U Active CN220601022U (en) | 2023-08-31 | 2023-08-31 | Environment-friendly silencing device for natural gas recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220601022U (en) |
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2023
- 2023-08-31 CN CN202322360546.5U patent/CN220601022U/en active Active
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