CN204388547U - A kind of inner wall of metal tube dehumidifying dust arrester - Google Patents
A kind of inner wall of metal tube dehumidifying dust arrester Download PDFInfo
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- CN204388547U CN204388547U CN201420865490.7U CN201420865490U CN204388547U CN 204388547 U CN204388547 U CN 204388547U CN 201420865490 U CN201420865490 U CN 201420865490U CN 204388547 U CN204388547 U CN 204388547U
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Abstract
The utility model discloses a kind of inner wall of metal tube dehumidifying dust arrester, comprise hot air circulator, dust separator, condenser, dehumidifying dedusting controller, first enters air draft connector and second enters air draft connector, the air outlet of hot air circulator is connected with the first air intake entering air draft connector by the first hot blast transfer tube, first air outlet entering air draft connector is connected with the first hot blast connecting hose, second air intake entering air draft connector is connected with the second hot blast connecting hose, second air outlet entering air draft connector is connected with the air intake of dust separator by the second hot blast transfer tube, the air outlet of dust separator is connected with the air intake of condenser by the 3rd hot blast transfer tube, the air outlet of condenser is connected with the air intake of hot air circulator by the 4th hot blast transfer tube, the air intake of condenser is provided with humidity sensor and dust sensor.The utility model uses simple operation, effectively improves the efficiency of dehumidifying dedusting, energy-conserving and environment-protective, dehumidifying good dedusting effect.
Description
Technical field
The utility model belongs to metal tube manufacturing technology field, is specifically related to a kind of inner wall of metal tube dehumidifying dust arrester.
Background technology
Mechanical bimetal multiple tube is by base tube and the bushing pipe a kind of functional steel pipe by mechanical bond, Sa2-2.5 level must be reached according to standard-required base tube inner wall surface before compound, therefore must carry out derusting by sandblasting process to base tube inner surface before base tube and bushing pipe assemble.
Because base tube is substantially in outdoor stacking, run into sleety weather, base tube inner surface is moist, and partial interior is even intake, and steel sand and iron rust, dust adhering can be caused to be connected together, cannot normally produce during blasting treatment.Conventional method takes combustion gas or Medium frequency induction to heat at base tube outer wall, to reach the object of removing base tube inner surface moisture, but, base tube is generally horizontal positioned, combustion heater or Frequency Induction Heating coil are when base tube outer wall heats, even if there is higher temperature, but because moisture in base tube is difficult to discharge outside base tube in time, therefore effect on moisture extraction is poor, and dust is difficult to remove, in addition, conventional method there will be that energy consumption is high, contaminated environment, inefficient phenomenon, and in base tube, moisture is also difficult to discharge, and have impact on effect on moisture extraction.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of inner wall of metal tube dehumidifying dust arrester is provided, its structure is simple, realization is convenient and cost is low, use simple operation, effectively improve the efficiency of inner wall of metal tube dehumidifying dedusting, energy-conserving and environment-protective, dehumidifying good dedusting effect, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of inner wall of metal tube dehumidifying dust arrester, it is characterized in that: comprise hot air circulator, dust separator, condenser and dehumidifying dedusting controller, and be symmetrical arranged and lay respectively at first outside metal tube two ends to enter air draft connector and second and enter air draft connector, the air outlet of described hot air circulator is connected with the first air intake entering air draft connector by the first hot blast transfer tube, described first air outlet entering air draft connector is connected with the first hot blast connecting hose for being connected with one end of metal tube, described second air intake entering air draft connector is connected with the second hot blast connecting hose for being connected with the other end of metal tube, described second air outlet entering air draft connector is connected with the air intake of dust separator by the second hot blast transfer tube, the air outlet of described dust separator is connected with the air intake of condenser by the 3rd hot blast transfer tube, the air outlet of described condenser is connected with the air intake of hot air circulator by the 4th hot blast transfer tube, the air intake of described condenser is provided with the humidity sensor for carrying out detection in real time to the humidity of the hot blast entered in condenser and the dust sensor for carrying out detection in real time to the dust concentration of the hot blast entered in condenser, described humidity sensor and dust sensor all connect with the input of dehumidifying dedusting controller, and described hot air circulator, dust separator and condenser all connect with the output of dehumidifying dedusting controller.
Above-mentioned a kind of inner wall of metal tube dehumidifying dust arrester, it is characterized in that: the touch LCD screen that described dehumidifying dedusting controller comprises PLC module and connects with PLC module, described humidity sensor and dust sensor all connect with the input of PLC module, the output of described PLC module is connected to the first relay for controlling the power on/off of hot air circulator, for the second relay of controlling the power on/off of dust separator and the 3rd relay for controlling the power on/off of condenser, described first relay is connected in the current supply circuit of hot air circulator, described second relay is connected in the current supply circuit of dust separator, described 3rd relay is connected in the current supply circuit of condenser.
Above-mentioned a kind of inner wall of metal tube dehumidifying dust arrester, it is characterized in that: described first enters the first connector shell that air draft connector comprises rectangular shape, the bottom of described first connector shell is air intake and is provided with the first air inlet, described first hot blast transfer tube is connected with the first air inlet, the side of described first connector shell is air outlet and is provided with first row air port, and described first hot blast connecting hose is connected with first row air port; Described second enters the second connector shell that air draft connector comprises rectangular shape, the side of described second connector shell is air intake and is provided with the second air inlet, described second hot blast connecting hose is connected with the second air inlet, the bottom of described second connector shell is air outlet and is provided with second row air port, and described second hot blast transfer tube is connected with second row air port.
Above-mentioned a kind of inner wall of metal tube dehumidifying dust arrester, it is characterized in that: the quantity in described first air inlet and first row air port is one, the quantity in described second air inlet and second row air port is one.
Above-mentioned a kind of inner wall of metal tube dehumidifying dust arrester, it is characterized in that: the shape of described first hot blast connecting hose and the shape of the second hot blast connecting hose are tubaeform, one end that described first hot blast connecting hose is connected with metal tube is for hold and to be socketed on metal tube greatly, the described first hot blast connecting hose length be socketed on metal tube is 50mm ~ 100mm, one end that described second hot blast connecting hose is connected with metal tube is for hold and to be socketed on metal tube greatly, and the described second hot blast connecting hose length be socketed on metal tube is 50mm ~ 100mm.
Above-mentioned a kind of inner wall of metal tube dehumidifying dust arrester, it is characterized in that: the quantity of described first air inlet is one, the quantity in described first row air port is multiple; The quantity of described second air inlet is multiple, and the quantity in described second row air port is one.
Above-mentioned a kind of inner wall of metal tube dehumidifying dust arrester, it is characterized in that: the shape of described first hot blast connecting hose and the shape of the second hot blast connecting hose are cylindrical, one end of described first hot blast connecting hose is socketed on metal tube and the length be socketed on metal tube is 50mm ~ 100mm, and one end of described second hot blast connecting hose is socketed on metal tube and the length be socketed on metal tube is 50mm ~ 100mm.
Above-mentioned a kind of inner wall of metal tube dehumidifying dust arrester, is characterized in that: described metal tube is the base tube of mechanical bimetal multiple tube.
The utility model compared with prior art has the following advantages:
1, structure of the present utility model is simple, rationally novel in design, and realization is convenient and cost is low.
2, use simple operation of the present utility model.
3, power during utility model works is 50KW, and adopts power during Frequency Induction Heating to be 175KW in prior art, can economize energy effectively.
4, the utility model pollutes producing environment during inner wall of metal tube dehumidifying dedusting, and adopts gas heating mode of the prior art, can cause certain environmental pollution.
5, the utility model carries out inner wall of metal tube dehumidifying dedusting needs the time to be about about 5 minutes, and method of the prior art needs about 10 minutes, and the utility model improves the efficiency of inner wall of metal tube dehumidifying dedusting effectively.
6, the utility model can meet the dehumidifying dedusting demand of various metals pipe of different size, different situation, applied widely, and dehumidifying good dedusting effect, is convenient to promote the use of.
In sum, the utility model structure is simple, and realization is convenient and cost is low, uses simple operation, effectively improves the efficiency of inner wall of metal tube dehumidifying dedusting, energy-conserving and environment-protective, and dehumidifying good dedusting effect, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of inner wall of metal tube dehumidifying dust arrester except controller in the utility model embodiment 1.
Fig. 2 is the first structural representation entering air draft connector in the utility model embodiment 1.
Fig. 3 is the second structural representation entering air draft connector in the utility model embodiment 1.
Fig. 4 is the structural representation of inner wall of metal tube dehumidifying dust arrester except controller in the utility model embodiment 2.
Fig. 5 is the first structural representation entering air draft connector in the utility model embodiment 2.
Fig. 6 is the second structural representation entering air draft connector in the utility model embodiment 2.
Fig. 7 is the annexation schematic diagram of the utility model dehumidifying dedusting controller and other each several parts.
Description of reference numerals:
1-hot air circulator; 2-the first hot blast transfer tube; 3-the first enters air draft connector;
3-1-the first connector shell; 3-2-the first air inlet; 3-3-first row air port;
4-the first hot blast connecting hose; 5-metal tube; 6-dust separator;
7-condenser; 8-dehumidifying dedusting controller; 8-1-PLC module;
8-2-touch LCD screen; 8-3-the first relay;
8-4-the second relay; 8-5-the 3rd relay; 9-the second enters air draft connector;
9-1-the second connector shell; 9-2-the second air inlet; 9-3-second row air port;
10-the second hot blast connecting hose; 11-the second hot blast transfer tube;
12-the three hot blast transfer tube; 13-the four hot blast transfer tube; 14-humidity sensor;
15-dust sensor.
Detailed description of the invention
Embodiment 1
As shown in Figure 1 and Figure 7, the utility model comprises hot air circulator 1, dust separator 6, condenser 7 and dehumidifying dedusting controller 8, and be symmetrical arranged and lay respectively at first outside metal tube 5 two ends to enter air draft connector 3 and second and enter air draft connector 9, the air outlet of described hot air circulator 1 is connected with the first air intake entering air draft connector 3 by the first hot blast transfer tube 2, described first air outlet entering air draft connector 3 is connected with the first hot blast connecting hose 4 for being connected with one end of metal tube 5, described second air intake entering air draft connector 9 is connected with the second hot blast connecting hose 10 for being connected with the other end of metal tube 5, described second air outlet entering air draft connector 9 is connected with the air intake of dust separator 6 by the second hot blast transfer tube 11, the air outlet of described dust separator 6 is connected with the air intake of condenser 7 by the 3rd hot blast transfer tube 12, the air outlet of described condenser 7 is connected with the air intake of hot air circulator 1 by the 4th hot blast transfer tube 13, the air intake of described condenser 7 is provided with the humidity sensor 14 for carrying out detection in real time to the humidity of the hot blast entered in condenser 7 and the dust sensor 15 for carrying out detection in real time to the dust concentration of the hot blast entered in condenser 7, described humidity sensor 14 and dust sensor 15 all connect with the input of dehumidifying dedusting controller 8, and described hot air circulator 1, dust separator 6 and condenser 7 all connect with the output of dehumidifying dedusting controller 8.
As shown in Figure 7, in the present embodiment, the touch LCD screen 8-2 that described dehumidifying dedusting controller 8 comprises PLC module 8-1 and connects with PLC module 8-1, described humidity sensor 14 and dust sensor 15 all connect with the input of PLC module 8-1, the output of described PLC module 8-1 is connected to the first relay 8-3 for controlling the power on/off of hot air circulator 1, for the second relay 8-4 of controlling the power on/off of dust separator 6 and the 3rd relay 8-5 for controlling the power on/off of condenser 7, described first relay 8-3 is connected in the current supply circuit of hot air circulator 1, described second relay 8-4 is connected in the current supply circuit of dust separator 6, described 3rd relay 8-5 is connected in the current supply circuit of condenser 7.
In the present embodiment, as shown in Figure 2, described first enters the first connector shell 3-1 that air draft connector 3 comprises rectangular shape, the bottom of described first connector shell 3-1 is air intake and is provided with the first air inlet 3-2, described first hot blast transfer tube 2 is connected with the first air inlet 3-2, the side of described first connector shell 3-1 is air outlet and is provided with first row air port 3-3, and described first hot blast connecting hose 4 is connected with first row air port 3-3; As shown in Figure 3, described second enters the second connector shell 9-1 that air draft connector 9 comprises rectangular shape, the side of described second connector shell 9-1 is air intake and is provided with the second air inlet 9-2, described second hot blast connecting hose 10 is connected with the second air inlet 9-2, the bottom of described second connector shell 9-1 is air outlet and is provided with second row air port 9-3, and described second hot blast transfer tube 11 is connected with second row air port 9-3.
As shown in Figure 1, Figure 2 and Figure 3, in the present embodiment, the quantity of described first air inlet 3-2 and the quantity of first row air port 3-3 are one; The quantity of described second air inlet 9-2 and the quantity of second row air port 9-3 are one.
As shown in Figure 1, in the present embodiment, the shape of described first hot blast connecting hose 4 and the shape of the second hot blast connecting hose 10 are tubaeform, one end that described first hot blast connecting hose 4 is connected with metal tube 5 is for hold and to be socketed on metal tube 5 greatly, described first hot blast connecting hose 4 length be socketed on metal tube 5 is 50mm ~ 100mm, one end that described second hot blast connecting hose 10 is connected with metal tube 5 is for hold and to be socketed on metal tube 5 greatly, and described second hot blast connecting hose 10 length be socketed on metal tube 5 is 50mm ~ 100mm.Owing to adopting the first hot blast connecting hose 4 to be connected with the two ends of metal tube 5 respectively with the second hot blast connecting hose 10, the first hot blast connecting hose 4 and the second hot blast connecting hose 10 have certain elasticity, therefore, it is possible to effectively prevent Leakage Gas.Described first hot blast connecting hose 4 length be socketed on metal tube 5 is 50mm ~ 100mm, described second hot blast connecting hose 10 length be socketed on metal tube 5 is 50mm ~ 100mm, and the outer surface within the scope of metal tube 5 pipe end 50mm ~ 100mm can be made so simultaneously dry.
In the present embodiment, described metal tube 5 is the base tube of mechanical bimetal multiple tube, namely the utility model is used for carrying out dehumidifying dedusting to the base tube inwall of mechanical bimetal multiple tube, meet mechanical bimetal multiple tube sandblasting quantity-produced demand, ensure that and normally to carry out in the base tube inner surface sandblasting of overcast and rainy mechanical bimetal multiple tube.
The Large Diameter Pipeline metal tube 5 that inner wall of metal tube dehumidifying dust arrester in the present embodiment is mainly used in caliber scope is 323mm ~ 1020mm carries out dehumidifying dedusting, because the quantity of described first air inlet 3-2 and the quantity of first row air port 3-3 are one; The quantity of described second air inlet 9-2 and the quantity of second row air port 9-3 are one; Therefore, the present embodiment is that single metal tube 5 dehumidifies dedusting, can to connect on a metal tube 5 to this kind of inner wall of metal tube dehumidifying dust arrester at every turn and can only carry out dehumidifying dedusting to a metal tube 5 at every turn.
Embodiment 2
As shown in Figure 4, Figure 5 and Figure 6, a kind of inner wall of metal tube dehumidifying dust arrester in the present embodiment, as different from Example 1: the quantity of described first row air port 3-3 and the quantity of the second air inlet 9-2 are multiple.The shape of described first hot blast connecting hose 4 and the shape of the second hot blast connecting hose 10 are cylindrical.All the other structures are all identical with embodiment 1.
The small-caliber metal tubes 5 that inner wall of metal tube dehumidifying dust arrester in the present embodiment is mainly used in caliber scope is 73mm ~ 273mm carries out dehumidifying dedusting, because the quantity of described first row air port 3-3 and the quantity of the second air inlet 9-2 are multiple; Therefore, the present embodiment is that many metal tubes 5 dehumidify dedusting, many metal tubes 5 can be connected at every turn to this kind of inner wall of metal tube dehumidifying dust arrester, also can only carry out dehumidifying dedusting to many metal tubes 5 at every turn, greatly can improve the dehumidifying efficiency of dust collection of small-caliber metal tubes 5.
Adopt the utility model carry out inner wall of metal tube dehumidifying dedusting time process be: first, the metal tube 5 of dedusting of will dehumidifying is fixed on metal pipe frame, and the first hot blast connecting hose 4 is connected with one end of metal tube 5, the second hot blast connecting hose 10 is connected with the other end of metal tube 5, then, described dehumidifying dedusting controller 8 controls the current supply circuit that the first relay 8-3 connects hot air circulator 1, control the current supply circuit that the second relay 8-4 connects dust separator 6, control the current supply circuit that the 3rd relay 8-5 connects condenser 7, described hot air circulator 1, dust separator 6 and condenser 7 start, the hot blast that hot air circulator 1 blows out is successively via the first hot blast transfer tube 2, first enters air draft connector 3 and the first hot blast connecting hose 4 is blown in metal tube 5, drying dehumidification is carried out to metal tube 5 inwall, simultaneously, the dust be attached on metal tube 5 inwall blows afloat by hot blast, and dust with hot blast via the second hot blast connecting hose 10, second enters air draft connector 9 and the second hot blast transfer tube 11 is blown in dust separator 6, after dust in dust separator 6 pairs of hot blasts is separated, hot blast enters in condenser 7 via the 3rd hot blast transfer tube 12 again, the hot blast of condenser 7 to humidity compresses, by the 4th hot blast transfer tube 13, the hot blast of drying is transferred to hot air circulator 1 again after being separated its moisture, hot air circulator 1 heats rear blowout to hot blast again, define hot air circulation dehumidifying dust pelletizing system, in hot air circulation dehumidifying dust removal process, the humidity of the hot blast in described humidity sensor 14 pairs of condensers 7 detects in real time and the moisture signal detected is exported to dehumidifying dedusting controller 8, dust concentration in described dust sensor 15 pairs of condensers 7 detects in real time and the dust concentration signal detected is exported to dehumidifying dedusting controller 8, the moisture signal numerical value that described dehumidifying dedusting controller 8 is received and humidity threshold compare, and the dust concentration signal numerical value received and dust concentration threshold value compare, after moisture signal numerical value is less than humidity threshold and dust concentration signal numerical value is less than dust concentration threshold value, described dehumidifying dedusting controller 8 controls the current supply circuit that the first relay 8-3 disconnects hot air circulator 1, control the current supply circuit that the second relay 8-4 disconnects dust separator 6, control the current supply circuit that the 3rd relay 8-5 disconnects condenser 7, described hot air circulator 1, dust separator 6 and condenser 7 quit work.Namely complete metal tube 5 inwall dehumidifying dedusting work, next process can be entered and carry out blasting treatment.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.
Claims (8)
1. an inner wall of metal tube dehumidifying dust arrester, it is characterized in that: comprise hot air circulator (1), dust separator (6), condenser (7) and dehumidifying dedusting controller (8), and be symmetrical arranged and lay respectively at first outside metal tube (5) two ends to enter air draft connector (3) and second and enter air draft connector (9), the air outlet of described hot air circulator (1) is connected with the first air intake entering air draft connector (3) by the first hot blast transfer tube (2), described first air outlet entering air draft connector (3) is connected with the first hot blast connecting hose (4) for being connected with one end of metal tube (5), described second air intake entering air draft connector (9) is connected with the second hot blast connecting hose (10) for being connected with the other end of metal tube (5), described second air outlet entering air draft connector (9) is connected with the air intake of dust separator (6) by the second hot blast transfer tube (11), the air outlet of described dust separator (6) is connected with the air intake of condenser (7) by the 3rd hot blast transfer tube (12), the air outlet of described condenser (7) is connected with the air intake of hot air circulator (1) by the 4th hot blast transfer tube (13), the air intake of described condenser (7) is provided with the humidity sensor (14) for carrying out detection in real time to the humidity of the hot blast entered in condenser (7) and the dust sensor (15) for carrying out detection in real time to the dust concentration of the hot blast entered in condenser (7), described humidity sensor (14) and dust sensor (15) all connect with the input of dehumidifying dedusting controller (8), described hot air circulator (1), dust separator (6) and condenser (7) all connect with the output of dehumidifying dedusting controller (8).
2. according to a kind of inner wall of metal tube dehumidifying dust arrester according to claim 1, it is characterized in that: the touch LCD screen (8-2) that described dehumidifying dedusting controller (8) comprises PLC module (8-1) and connects with PLC module (8-1), described humidity sensor (14) and dust sensor (15) all connect with the input of PLC module (8-1), the output of described PLC module (8-1) is connected to the first relay (8-3) for controlling the power on/off of hot air circulator (1), for the second relay (8-4) of controlling the power on/off of dust separator (6) and the 3rd relay (8-5) for controlling the power on/off of condenser (7), described first relay (8-3) is connected in the current supply circuit of hot air circulator (1), described second relay (8-4) is connected in the current supply circuit of dust separator (6), described 3rd relay (8-5) is connected in the current supply circuit of condenser (7).
3. according to a kind of inner wall of metal tube dehumidifying dust arrester according to claim 1, it is characterized in that: described first enters the first connector shell (3-1) that air draft connector (3) comprises rectangular shape, the bottom of described first connector shell (3-1) is air intake and is provided with the first air inlet (3-2), described first hot blast transfer tube (2) is connected with the first air inlet (3-2), the side of described first connector shell (3-1) is air outlet and is provided with first row air port (3-3), described first hot blast connecting hose (4) is connected with first row air port (3-3), described second enters the second connector shell (9-1) that air draft connector (9) comprises rectangular shape, the side of described second connector shell (9-1) is air intake and is provided with the second air inlet (9-2), described second hot blast connecting hose (10) is connected with the second air inlet (9-2), the bottom of described second connector shell (9-1) is air outlet and is provided with second row air port (9-3), and described second hot blast transfer tube (11) is connected with second row air port (9-3).
4. according to a kind of inner wall of metal tube dehumidifying dust arrester according to claim 3, it is characterized in that: the quantity of described first air inlet (3-2) and first row air port (3-3) is one, the quantity of described second air inlet (9-2) and second row air port (9-3) is one.
5. according to a kind of inner wall of metal tube dehumidifying dust arrester according to claim 4, it is characterized in that: the shape of described first hot blast connecting hose (4) and the shape of the second hot blast connecting hose (10) are tubaeform, one end that described first hot blast connecting hose (4) is connected with metal tube (5) is for hold and to be socketed on metal tube (5) greatly, described first hot blast connecting hose (4) length be socketed on metal tube (5) is 50mm ~ 100mm, one end that described second hot blast connecting hose (10) is connected with metal tube (5) is for hold and to be socketed on metal tube (5) greatly, described second hot blast connecting hose (10) length be socketed on metal tube (5) is 50mm ~ 100mm.
6., according to a kind of inner wall of metal tube dehumidifying dust arrester according to claim 3, it is characterized in that: the quantity of described first air inlet (3-2) is one, the quantity of described first row air port (3-3) is multiple; The quantity of described second air inlet (9-2) is multiple, and the quantity of described second row air port (9-3) is one.
7. according to a kind of inner wall of metal tube dehumidifying dust arrester according to claim 6, it is characterized in that: the shape of described first hot blast connecting hose (4) and the shape of the second hot blast connecting hose (10) are cylindrical, one end of described first hot blast connecting hose (4) is socketed in that metal tube (5) is upper and the length be socketed on metal tube (5) is 50mm ~ 100mm, and one end of described second hot blast connecting hose (10) is socketed in that metal tube (5) is upper and the length be socketed on metal tube (5) is 50mm ~ 100mm.
8., according to a kind of inner wall of metal tube dehumidifying dust arrester according to claim 1, it is characterized in that: the base tube that described metal tube (5) is mechanical bimetal multiple tube.
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| CN201420865490.7U CN204388547U (en) | 2014-12-29 | 2014-12-29 | A kind of inner wall of metal tube dehumidifying dust arrester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507287A (en) * | 2018-04-11 | 2018-09-07 | 佛山市穗远恒科建材有限公司 | A kind of metal pipe material inner wall dehumidification device |
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- 2014-12-29 CN CN201420865490.7U patent/CN204388547U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507287A (en) * | 2018-04-11 | 2018-09-07 | 佛山市穗远恒科建材有限公司 | A kind of metal pipe material inner wall dehumidification device |
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