CN211025736U - Combined compressed air dryer - Google Patents
Combined compressed air dryer Download PDFInfo
- Publication number
- CN211025736U CN211025736U CN201921655072.4U CN201921655072U CN211025736U CN 211025736 U CN211025736 U CN 211025736U CN 201921655072 U CN201921655072 U CN 201921655072U CN 211025736 U CN211025736 U CN 211025736U
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- drying barrel
- pipe
- barrel
- drying
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Abstract
The utility model discloses a combined compressed air dryer, which comprises a box body, a first drying barrel arranged in the box body, and a second drying barrel arranged in the box body, wherein a cooling pipe group is arranged in the first drying barrel, one side of the first drying barrel is provided with an air inlet pipe, the other side is provided with an air outlet pipe, the side wall of the first drying barrel is provided with a first air inlet hole, the upper end of the first drying barrel is matched with a first barrel cover, the upper part of the first barrel cover is welded with a fourth pipe connecting piece, the fourth pipe connecting piece is in threaded fit with an air delivery pipe, the side wall of the second drying barrel is provided with a second air inlet hole, the second drying barrel is internally provided with two adsorption components, the upper end part of the second drying barrel is matched with a second barrel cover, the upper middle position of the second barrel cover is welded with a sixth pipe connecting piece, the sixth pipe connecting piece is in threaded fit with an air outlet pipe, the lower part of the first drying barrel is in threaded, the lower part of the second drying barrel is in threaded fit with a second U-shaped pipe. The air drying effect is good.
Description
Technical Field
The utility model relates to a modular compressed air dryer.
Background
The refrigerating compressed air drier is a new technology, belonging to the air source processing element in pneumatic system. The refrigeration type compressed air dryer utilizes the heat exchange between the refrigerant and the compressed air to reduce the temperature of the compressed air to the dew point temperature within the range of 2-10 ℃. With the continuous development of the refrigerated compressed air dryer industry, more and more people favor the industry.
The existing gas-water separator of the refrigeration type compressed air dryer mostly adopts baffle plates for gas-water separation, the baffle plates adopt a laminated structure, the structure is complex, the manufacturing cost is high, the angle and the distance of the baffle plates have great influence on the separation effect, the flow rate of compressed gas is required to be high, and the energy consumption is large; the liquid water obtained by direct discharge and separation is very easy to discharge from the water outlet for the gas in the shell, so that the gas leakage phenomenon is generated, the collection of the compressed gas after gas-water separation is not facilitated, the working efficiency of the gas-water separation device is seriously reduced, the control mode circuit of the existing refrigeration type compressed air dryer is complex, the number of used components is large, and the use cost is increased.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a simple structure, convenient to use, easy operation, it is fixed firm, with low costs, the installation and dismantle conveniently, air drying is effectual, and work efficiency is high, and the energy consumption is low, and is sealed effectual, and application scope is wide, long service life, the combination formula compressed air dryer that has safe and reliable effect.
In order to solve the above problem, the utility model adopts the following technical scheme:
a combined compressed air dryer comprises a box body, a first drying barrel and a second drying barrel, wherein the first drying barrel is arranged in the box body, the second drying barrel is arranged in the box body, two mounting plates which are arranged in an annular mode are welded on the outer walls of the first drying barrel and the second drying barrel, a fixing frame for fixing the mounting plates is arranged in the box body, a cooling pipe group is arranged in the first drying barrel and consists of two cooling pipe fittings which are arranged in an upper shape and a lower shape, a cold air inlet pipe connected with the cooling pipe group is arranged on one side of the first drying barrel, a cold air outlet pipe connected with the cooling pipe group is arranged on the other side of the first drying barrel, the outer end of the cold air inlet pipe extends out of the first drying barrel, a first pipe connecting piece is matched with the outer end part in a threaded mode, a hose connected with an external refrigerator is matched with the first pipe connecting piece in a threaded mode, a second pipe connecting piece is in threaded fit with the outer end portion of the second drying barrel, a circulating pipeline connected with an external refrigerator is in threaded fit with the second pipe connecting piece, a first air inlet hole is formed in the side wall of the first drying barrel, a third pipe connecting piece communicated with the first air inlet hole is welded on the outer wall of the first drying barrel, a compressed air inlet pipe is in threaded fit with the third pipe connecting piece and penetrates through the outside of the box body, a first barrel cover is matched with the upper end portion of the first drying barrel, a fourth pipe connecting piece is welded at the middle position of the upper portion of the first barrel cover, a gas pipe is in threaded fit with the fourth pipe connecting piece, a second air inlet hole is formed in the side wall of the second drying barrel, a fifth pipe connecting piece communicated with the second air inlet hole is welded on the outer wall of the second drying barrel, and the gas pipe is in threaded fit with the fifth pipe connecting piece, the drying device comprises a second drying barrel, and is characterized in that two adsorption components are arranged in the second drying barrel in an up-down shape, two support rings are welded on the inner wall of the second drying barrel in an up-down shape, the adsorption components are fixed on the support rings, a second barrel cover is matched with the upper end of the second drying barrel, a sixth pipe connecting piece is welded at the middle position of the upper portion of the second barrel cover, an air outlet pipe is matched with the sixth pipe connecting piece in a threaded mode, cavities convenient for water storage are arranged at the inner bottoms of the first drying barrel and the second drying barrel, a first U-shaped pipe is matched with the lower portion of the first drying barrel in a threaded mode, a tee is matched with one end of the first U-shaped pipe in a threaded mode, a second U-shaped pipe is matched with the lower portion of the second drying barrel in a threaded mode, one end of the second U-shaped pipe is matched with the.
According to the technical scheme, the two adsorption components are composed of a circular positioning frame, a first adsorption layer and a second adsorption layer, the first adsorption layer and the second adsorption layer are fixed on the circular positioning frame through screws, the first adsorption layer is arranged at the upper portion of the second adsorption layer and is attached to the second adsorption layer, an annular positioning plate is welded to the surface of the outer ring of the circular positioning frame and clamped on a support ring, a sealing ring matched with the support ring is arranged on the annular positioning plate, the cross section of the sealing ring is arranged in a 7-shaped mode, a clamping plate is matched with the upper surface of the annular positioning plate, the side wall of the clamping plate is attached to the inner wall of the second drying barrel, a positioning screw used for fixing the clamping plate and the second drying barrel is arranged on the clamping plate, and a pipeline which is longitudinally arranged is adopted between the two cooling pipe fittings.
As a preferred technical scheme, a support frame used for fixing and supporting the cooling pipe group is arranged on the inner wall of the first drying barrel, a first fixing screw used for fixing the support frame and the first drying barrel is arranged on the support frame, a baffle is welded on the support frame and arranged on the support frame close to the first air inlet, one end of the air outlet pipe extends out of the box body, a valve is arranged on the air outlet pipe extending out of the box body, the lower end of the water outlet pipe penetrates through the bottom of the box body, the high-position pipeline position of the first U-shaped pipe is lower than the installation position of the first air inlet, and the high-position pipeline position of the second U-shaped pipe is lower than the installation position of the second air inlet.
According to the preferable technical scheme, a first mounting screw for fixing the first barrel cover and the first drying barrel is arranged on the first barrel cover, a first sealing ring matched with the inner wall of the first barrel cover is arranged at the upper end of the first drying barrel, a second mounting screw for fixing the second barrel cover and the second drying barrel is arranged on the second barrel cover, and a second sealing ring matched with the inner wall of the second barrel cover is arranged at the upper end of the second drying barrel.
As the preferred technical scheme, the mounting panel card is established on the mount, be equipped with the screw that is used for fixed mounting panel and mount on the mounting panel, two mounting panels are the upper and lower form setting, the upper end of box adopts the screw fixation to have the case lid.
As an optimized technical scheme, sealing sleeves are sleeved on the outer rings of the two cooling pipe fittings, the outer walls of the sealing sleeves are in sealing fit with the inner wall of the first drying barrel, and supporting legs are fixed to the lower bottom of the box body through screws.
The utility model relates to a modular compressed air dryer's beneficial effect is: simple structure, convenient to use, easy operation, it is fixed firm, with low costs, installation and dismantlement are convenient, and air drying is effectual, and work efficiency is high, and the energy consumption is low, and is sealed effectual, and application scope is wide, long service life has safe and reliable's effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the cooling tube of the present invention;
FIG. 3 is a top view of the adsorption assembly of the present invention;
FIG. 4 is a partial enlarged view of the present invention;
fig. 5 is a structure view of the fixing frame of the present invention.
Detailed Description
Referring to fig. 1 to 5, a combined compressed air dryer includes a cabinet 1, a first drying barrel 2 disposed in the cabinet 1, and a second drying barrel 3 disposed in the cabinet 1, wherein two mounting plates 4 are welded to outer walls of the first drying barrel 2 and the second drying barrel 3, a fixing frame 5 for fixing the mounting plates 4 is disposed in the cabinet 1, a cooling tube assembly 6 is disposed in the first drying barrel 2, the cooling tube assembly 6 is composed of two cooling tubes 7 disposed in an upper-lower manner, a cool air inlet pipe 8 connected to the cooling tube assembly 6 is disposed at one side of the first drying barrel 2, a cool air outlet pipe 9 connected to the cooling tube assembly 6 is disposed at the other side of the first drying barrel 2, an outer end of the cool air inlet pipe 8 extends out of the first drying barrel 2, a first pipe connector 10 is screwed to an outer end portion of the first pipe connector 10, and a hose 11 connected to an external refrigerator is screwed to the first pipe connector 10, the outer end of the cold air outlet pipe 9 extends out of the first drying barrel 2, a second pipe connecting piece 12 is in threaded fit at the outer end part, a circulating pipeline 13 connected with an external refrigerator is in threaded fit on the second pipe connecting piece 12, a first air inlet 14 is formed in the side wall of the first drying barrel 2, a third pipe connecting piece 15 communicated with the first air inlet 14 is welded on the outer wall of the first drying barrel 2, a compressed air inlet pipe 16 is in threaded fit on the third pipe connecting piece 15, the compressed air inlet pipe 16 penetrates through the box body 1, a first barrel cover 17 is matched at the upper end part of the first drying barrel 2, a fourth pipe connecting piece 18 is welded at the middle position of the upper part of the first barrel cover 17, an air conveying pipe 19 is in threaded fit on the fourth pipe connecting piece 18, and a second air inlet 20 is formed in the side wall of the second drying barrel 3, a fifth pipe connecting piece 21 communicated with the second air inlet hole 20 is welded on the outer wall of the second drying barrel 3, the air pipe 19 is in threaded fit with the fifth pipe connecting piece 21, two adsorption components 22 are arranged in the second drying barrel 3 in an up-down shape, two support rings 23 are welded on the inner wall of the second drying barrel 3 in an up-down shape, the adsorption components 22 are fixed on the support rings 23, a second barrel cover 24 is matched at the upper end of the second drying barrel 3, a sixth pipe connecting piece 25 is welded at the middle position of the upper part of the second barrel cover 24, an air outlet pipe 26 is in threaded fit on the sixth pipe connecting piece 25, cavities convenient for storing water are arranged at the inner bottoms of the first drying barrel 2 and the second drying barrel 3, a first U-shaped pipe 27 is in threaded fit at the lower part of the first drying barrel 2, and a tee 28 is in threaded fit at one end of the first U-shaped pipe 27, a second U-shaped pipe 29 is in threaded fit with the lower portion of the second drying barrel 3, one end of the second U-shaped pipe 29 is in threaded fit with a tee 28, and a drain pipe 30 is in threaded fit with the tee 28.
In a preferred embodiment of the present invention, the two adsorption assemblies 22 are composed of a circular positioning frame 201, a first adsorption layer 202 and a second adsorption layer 203, the first adsorption layer 202 and the second adsorption layer 203 are fixed on the circular positioning frame 201 by screws, the first adsorption layer 202 is disposed at the upper position of the second adsorption layer 203 and is attached to the circular positioning frame, the outer ring of the circular positioning frame 201 is welded with a ring-shaped positioning plate 204, the ring-shaped positioning plate 204 is clamped on the support ring 23, the ring-shaped positioning plate 204 is provided with a sealing ring 205 matched with the support ring 23, the cross section of the sealing ring 205 is arranged in a shape like 7, the upper surface of the ring-shaped positioning plate 204 is matched with a clamping plate 206, the side wall of the clamping plate 206 is attached to the inner wall of the second drying barrel 3, the clamping plate 206 is provided with a positioning screw 207 for fixing the clamping plate 206 and the second drying barrel 3, the two cooling pipe fittings 7 are connected by adopting a pipeline which is longitudinally arranged.
The utility model discloses in the embodiment of a preferred, be equipped with the support frame 31 that is used for fixed and support cooling tube group 6 on the 2 inner walls of first drying bucket, be equipped with the first set screw 32 that is used for fixed support frame 31 and first drying bucket 2 on the support frame 31, the welding has baffle 33 on the support frame 31, baffle 33 sets up on the support frame 31 that is close to first air inlet 14 department, 26 one end of outlet duct extends the outer setting of box 1, and is provided with valve 34 on extending the outer outlet duct 26 of box 1, the lower extreme of drain pipe 30 runs through the bottom setting of box 1, the high-order pipeline position of first U type pipe 27 is less than the mounted position setting of first inlet port 14, the high-order pipeline position of second U type pipe 28 is less than the mounted position setting of second inlet port 20.
The utility model discloses in the embodiment of a preferred, be equipped with the first mounting screw 110 that is used for fixed first bung 17 and first dry bucket 2 on the first bung 17, the upper end of first dry bucket 2 be equipped with first bung 17 inner wall matched with first sealing washer 111, be equipped with the second mounting screw 112 that is used for fixed second bung 24 and second dry bucket 3 on the second bung 24, the upper end of second dry bucket 3 be equipped with second bung 24 inner wall matched with second sealing washer 113.
The utility model discloses in the embodiment of a preferred, mounting panel 4 card is established on mount 5, be equipped with the screw that is used for fixed mounting panel 4 and mount 5 on mounting panel 4, two mounting panels 4 are the setting of upper and lower form, the upper end of box 1 adopts the screw fixation to have case lid 211.
The utility model discloses in the embodiment of a preferred, the outer lane of two cooling tube spare 7 all overlaps and is equipped with seal cover 220, the outer wall of seal cover 220 and the sealed laminating setting of the inner wall of first drying bucket 2, the lower bottom of box 1 adopts the screw fixation to have stabilizer blade 221.
Further, the utility model discloses in, air conditioning intake pipe and air conditioning outlet duct all through sealed processing in cooperation department with first dry bucket wall to increase its sealed effect, avoid the air to leak.
Furthermore, be equipped with the first mounting screw that is used for fixed first bung and first drying bucket on the first bung, the upper end of first drying bucket be equipped with first bung inner wall matched with first sealing washer, be equipped with the second mounting screw that is used for fixed second bung and second drying bucket on the second bung, the upper end of second drying bucket be equipped with second bung inner wall matched with second sealing washer. Through above structure setting, can conveniently maintain the inner structure of first drying bucket and second drying bucket to through the structure setting of first sealing washer and second sealing washer, the sealed effect of multiplicable first drying bucket and second drying bucket avoids in the air leaks or outside air enters into first drying bucket and second drying bucket.
Furthermore, in the utility model, the first adsorption layer is made of activated carbon, and the second adsorption layer is made of alumina.
The utility model relates to a modular compressed air dryer has following advantage: when in use, the compressed air which needs to be dried can conveniently enter the first drying barrel through the first air inlet and the third pipe connecting piece which is communicated with the first air inlet, and the compressed air inlet pipe is in threaded fit with the third pipe connecting piece, the contact between the air and the cooling pipe group can be increased to the maximum extent through the structural arrangement of the cooling pipe group, so that water vapor carried in the air is in contact with the cooling pipe group and then condensed into water drops to be separated from the air, the cold air can be conveniently conveyed into the cooling pipe group by the external refrigerator through the cold air inlet pipe, the air passing through the cooling pipe group can conveniently enter the external refrigerator through the circulating pipeline through the cold air outlet pipe and the circulating pipeline, the energy consumption of the external refrigerator is reduced, the refrigerating effect is also increased, the fourth pipe connecting piece and the air conveying pipe in threaded fit with the fourth pipe connecting piece are arranged, the air treated by the first drying barrel can be conveniently conveyed into the second drying barrel through the second air inlet hole by matching with a fifth pipe connecting piece arranged on the second drying barrel, the compressed air treated by the first drying barrel can be subjected to secondary adsorption treatment through two adsorption components arranged in the second drying barrel to adsorb water vapor carried in the air, so that the water vapor carried in the air is greatly reduced, the air adsorbed by the two adsorption components is discharged through an air outlet pipe matched on a sixth pipe connecting piece in a threaded manner, the control of air outlet quantity and the opening or closing of the air outlet pipe can be conveniently realized through a valve arranged on the air outlet pipe, the high-position pipeline position of the first U-shaped pipe is arranged at a position lower than the installation position of the first air inlet hole through the arranged first U-shaped pipe and the arranged second U-shaped pipe, and the high-position pipeline position of the second U-shaped pipe is arranged at a position lower than the installation position of the second air inlet hole, the water level in the cavities used for storing water at the bottoms of the first drying barrel and the second drying barrel is always lower than the first air inlet hole and the second air inlet hole, and when the water level is higher than the high-level pipeline positions of the first U-shaped pipe and the second U-shaped pipe, the water can automatically flow out, the workload of operators is reduced, the real-time change of the water level does not need to be paid attention to, the sealing sleeve is sleeved on the outer ring of the cooling pipe fitting and is in sealing fit with the inner wall of the first drying barrel, the air carrying water vapor can be prevented from passing through the gap between the cooling pipe fitting and the inner wall of the first drying barrel, the air carrying water vapor can be prevented from passing through the gap between the annular positioning plate and the support ring through the sealing ring with the cross section arranged in a 7-shaped manner, the structure arrangement of the sealing sleeve and the sealing ring is combined, the air filtering effect can be increased, the structure is, the air drying device has the advantages of low cost, convenience in installation and disassembly, good air drying effect, high working efficiency, low energy consumption, good sealing effect, wide application range, long service life and safety and reliability.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (6)
1. A combined compressed air dryer is characterized in that: comprises a box body, a first drying barrel arranged in the box body, and a second drying barrel arranged in the box body, wherein two mounting plates which are arranged in an annular shape are welded on the outer walls of the first drying barrel and the second drying barrel, a fixing frame for fixing the mounting plates is arranged in the box body, a cooling pipe group is arranged in the first drying barrel, the cooling pipe group consists of two cooling pipe fittings which are arranged in an upper shape and a lower shape, one side of the first drying barrel is provided with a cold air inlet pipe connected with the cooling pipe group, the other side of the first drying barrel is provided with a cold air outlet pipe connected with the cooling pipe group, the outer end of the cold air inlet pipe extends out of the first drying barrel, a first pipe connecting piece is in threaded fit with the outer end part, a hose connected with an external refrigerator is in threaded fit with the first pipe connecting piece, the outer end of the cold air outlet pipe extends out of the first drying barrel, and a, the second pipe connecting piece is in threaded fit with a circulating pipeline connected with an external refrigerator, a first air inlet hole is formed in the side wall of the first drying barrel, a third pipe connecting piece communicated with the first air inlet hole is welded on the outer wall of the first drying barrel, a compressed air inlet pipe is in threaded fit with the third pipe connecting piece, the compressed air inlet pipe penetrates through the outside of the box body and is arranged outside the box body, a first barrel cover is matched with the upper end of the first drying barrel, a fourth pipe connecting piece is welded at the middle position of the upper portion of the first barrel cover, a gas pipe is in threaded fit with the fourth pipe connecting piece, a second air inlet hole is formed in the side wall of the second drying barrel, a fifth pipe connecting piece communicated with the second air inlet hole is welded on the outer wall of the second drying barrel, the gas pipe is in threaded fit with the fifth pipe connecting piece, and two adsorption assemblies are arranged in the second drying barrel in an up-down shape, the drying device comprises a first drying barrel and a second drying barrel, wherein the inner wall of the second drying barrel is welded with two support rings in an up-down shape, an adsorption assembly is fixed on the support rings, the upper end of the second drying barrel is matched with a second barrel cover, a sixth pipe connecting piece is welded at the middle position of the upper portion of the second barrel cover, an air outlet pipe is in threaded fit on the sixth pipe connecting piece, cavities convenient for water storage are formed in the inner bottoms of the first drying barrel and the second drying barrel, a first U-shaped pipe is in threaded fit with the lower portion of the first drying barrel, a tee joint is in threaded fit with one end of the first U-shaped pipe, a second U-shaped pipe is in threaded fit with the lower portion of the second drying barrel, one end of the second U-shaped pipe is in threaded fit with the tee joint, and a drain.
2. The combined compressed air dryer of claim 1, wherein: two adsorption component constitute by circular locating rack, first adsorbed layer and second adsorbed layer adopt the screw fixation on circular locating rack, first adsorbed layer sets up the upper portion position department at the second adsorbed layer, and the laminating setting, the outer lane skin weld of circular locating rack has annular locating plate, the annular locating plate card is established on the support ring, be equipped with on the annular locating plate with support ring matched with sealing ring, the sealing ring cross-section is the setting of 7 characters form, the last surface fit of annular locating plate has the cardboard, the lateral wall of cardboard sets up with the inner wall laminating of second drying bucket, be equipped with the set screw who is used for fixed cardboard and second drying bucket on the cardboard, adopt the pipe connection who is vertical setting between two cooling pipe fittings.
3. The combined compressed air dryer of claim 1, wherein: the improved drying device is characterized in that a support frame used for fixing and supporting the cooling pipe group is arranged on the inner wall of the first drying barrel, a first fixing screw used for fixing the support frame and the first drying barrel is arranged on the support frame, a baffle is welded on the support frame and is arranged on the support frame close to the first air inlet, one end of the air outlet pipe extends out of the box body, a valve is arranged on the air outlet pipe extending out of the box body, the lower end of the water outlet pipe penetrates through the bottom of the box body, the high-position pipeline position of the first U-shaped pipe is lower than the installation position of the first air inlet, and the high-position pipeline position of the second U-shaped pipe is lower than the installation position of the second air inlet.
4. The combined compressed air dryer of claim 1, wherein: the drying device comprises a first barrel cover, a second barrel cover and a first drying barrel, wherein the first barrel cover is provided with a first mounting screw for fixing the first barrel cover and the first drying barrel, the upper end of the first drying barrel is provided with a first sealing ring matched with the inner wall of the first barrel cover, the second barrel cover is provided with a second mounting screw for fixing the second barrel cover and the second drying barrel, and the upper end of the second drying barrel is provided with a second sealing ring matched with the inner wall of the second barrel cover.
5. The combined compressed air dryer of claim 1, wherein: the mounting panel card is established on the mount, be equipped with the screw that is used for fixed mounting panel and mount on the mounting panel, two mounting panels are the setting of upper and lower form, the upper end of box adopts the screw fixation to have the case lid.
6. The combined compressed air dryer of claim 1, wherein: the outer rings of the two cooling pipe fittings are all sleeved with sealing sleeves, the outer walls of the sealing sleeves are in sealing fit with the inner wall of the first drying barrel, and supporting legs are fixed to the lower bottom of the box body through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921655072.4U CN211025736U (en) | 2019-09-30 | 2019-09-30 | Combined compressed air dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921655072.4U CN211025736U (en) | 2019-09-30 | 2019-09-30 | Combined compressed air dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211025736U true CN211025736U (en) | 2020-07-17 |
Family
ID=71560367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921655072.4U Expired - Fee Related CN211025736U (en) | 2019-09-30 | 2019-09-30 | Combined compressed air dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211025736U (en) |
-
2019
- 2019-09-30 CN CN201921655072.4U patent/CN211025736U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200717 Termination date: 20210930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |