CN203615537U - Air curtain relay device and workshop poisonous and harmful gas treatment device - Google Patents
Air curtain relay device and workshop poisonous and harmful gas treatment device Download PDFInfo
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- CN203615537U CN203615537U CN201320788022.XU CN201320788022U CN203615537U CN 203615537 U CN203615537 U CN 203615537U CN 201320788022 U CN201320788022 U CN 201320788022U CN 203615537 U CN203615537 U CN 203615537U
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- 231100000614 poison Toxicity 0.000 title abstract 4
- 230000007096 poisonous effect Effects 0.000 title abstract 4
- 231100000331 toxic Toxicity 0.000 claims description 47
- 230000002588 toxic effect Effects 0.000 claims description 47
- 230000003068 static effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 208000028571 Occupational disease Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses an air curtain relay device. The air curtain relay device comprises a fresh air feeder; an air outlet end of the fresh air feeder is connected with an air feeding pipe; the air curtain relay device also comprises at least two stages of air curtain pipes; an air inlet of every air curtain pipe is connected with the air feeding pipe; an air outlet of every air curtain pipe extends along the axial direction of the air curtain pipe; the air outlets of the air curtain pipes are formed in an air curtain relay mode according to the same direction; the next stage of air curtain pipe is arranged at the tail end of an air curtain which is produced by the adjacent last stage of air curtain pipe. The utility model also discloses a workshop poisonous and harmful gas treatment device, wherein the air curtain relay device is applied to the workshop poisonous and harmful gas treatment device. According to the air curtain relay device and the workshop poisonous and harmful gas treatment device, the length of the air curtain can be conveniently extended according to needs.
Description
Technical field
The utility model relates to the workshop toxic and harmful treatment facility of a kind of air curtain relay apparatus and this air curtain relay apparatus of a kind of application.
Background technology
Air curtain is the airflow that drives through-flow or centrifugal wind wheel to produce by high-speed electric expreess locomotive, forms the invisible door curtain of one side.At present, the application of air curtain is very extensive, for example be arranged on the tops, doorway such as refrigeration, air-conditioning, dustproof, heat insulation market, theater, hotel, restaurant, workshop, conference hall, freezer, operating room and household, start this machine, the air of indoor and outdoor can be separated, play both easy access, can prevent again the cold and hot air exchange of indoor and outdoor, meanwhile, there is again dustproof, anti-pollution effect; In addition, the air curtain that utilizes air curtain to produce in the workshop of some enterprises is completely enclosed within the toxic and harmful in workshop in the region below air curtain, make it not to other regional diffusion, be beneficial to the toxic and harmful in workshop to collect and process.
At present, form facility and the equipment of air curtain both at home and abroad, form the technology of air curtain, to adopt blower fan by the air of needs, the air curtain of introducing certain width forms device and is used to form air curtain, and for example patent No. ZL201330195218.3 discloses a kind of air curtain pipe and formed air curtain for the air that electrically ventilating machine is brought.Fig. 1 is the structural representation of the air curtain apparatus of prior art; With reference to Fig. 1, the air curtain apparatus of prior art, comprise new wind pressure fan, the outlet air end of new wind pressure fan is connected with ajutage, the outlet air end of ajutage is connected with an air curtain pipe, in use, can be by regulating the width of air curtain pipe to change the width of formed air curtain, the width of air curtain is easy to control.But the length of air curtain is difficult to control, in the situation that hope obtains long air curtain, generally extend air curtain with increasing blast at present, but it is undesirable to strengthen blast prolongation air curtain effect, be not easy to control, and the angular range that the afterbody of air curtain forms is large, disperses serious.
Utility model content
First technical problem to be solved in the utility model is: a kind of air curtain relay apparatus that can extend easily air curtain length is provided.
Second technical problem to be solved in the utility model is: provide one can extend easily air curtain length, effectively the workshop toxic and harmful treatment facility of the toxic and harmful in collection and treatment workshop.
For solving above-mentioned first technical problem, the technical solution of the utility model is:
A kind of air curtain relay apparatus, comprise new wind pressure fan, the outlet air end of described new wind pressure fan is connected with ajutage, also comprise at least two-stage air curtain pipe, the air inlet of every described air curtain pipe is connected with described ajutage respectively, the air outlet of every described air curtain pipe is all along the setting that extends axially of described air curtain pipe, and the air outlet of described air curtain pipe all arranges in the mode of air curtain relay by identical direction, and air curtain pipe is arranged on the end of the air curtain that air curtain pipe produces described in adjacent upper level described in next stage.
Preferably, described air curtain pipe comprises body, and the air inlet of described air curtain pipe is arranged on the middle part of its body or the port of its body; The air outlet place of described air curtain pipe is provided with the air outlet of flat.
Preferably, described air outlet arranges along the tangential direction of described body or in the radially 0-90 of described body degree angular range.
Preferably, the position of the air inlet of the inner corresponding described air curtain pipe of the body of described air curtain pipe is fixed with tapered shunting part.
Preferably, the air inlet of the periphery of described tapered shunting part and described air curtain pipe is connected with connecting rod.
For solving above-mentioned second technical problem, the technical solution of the utility model is:
A kind of workshop toxic and harmful treatment facility, comprises the supply air system, air draft system and the processing exhaust system that set gradually;
Described supply air system comprises new wind pressure fan, the outlet air end of described new wind pressure fan is connected with ajutage, also comprise at least two-stage air curtain pipe, the air inlet of every described air curtain pipe is connected with described ajutage respectively, the air outlet of every described air curtain pipe is all along the setting that extends axially of described air curtain pipe, and the air outlet of described air curtain pipe all arranges in the mode of air curtain relay by identical direction, air curtain pipe is arranged on the end of the air curtain that air curtain pipe produces described in adjacent upper level described in next stage;
Described air draft system comprises wind-collecting cover, and the air intake of described wind-collecting cover is oppositely arranged towards toxic and harmful region and with the air outlet of described the second air curtain pipe, and the outlet air end of described wind-collecting cover is connected with air-introduced machine;
Described processing exhaust system comprises static press device, and the entrance point of described static press device is connected to the outlet air end of described air-introduced machine, and the port of export of described static press device is connected to gas harmless treating apparatus.
Preferably, described air curtain pipe comprises body, and the air inlet of described air curtain pipe is arranged on the middle part of its body or the port of its body; The air outlet place of described air curtain pipe is provided with the air outlet of flat, and described air outlet arranges along the tangential direction of described body or in the radially 0-90 of described body degree angular range.
Preferably, the described air outlet setting that is inclined upwardly.
Preferably, the position of the air inlet of the inner corresponding described air curtain pipe of the body of described air curtain pipe is fixed with tapered shunting part, and the air inlet of the periphery of described tapered shunting part and described air curtain pipe is connected with connecting rod.
Preferably, the air intake of described wind-collecting cover is horn-like.
Adopted after technique scheme, the beneficial effects of the utility model are:
Air curtain relay apparatus of the present utility model, comprise new wind pressure fan, the outlet air end of described new wind pressure fan is connected with ajutage, also comprise at least two-stage air curtain pipe, the air inlet of every described air curtain pipe is connected with described ajutage respectively, the air outlet of every described air curtain pipe is all along the setting that extends axially of described air curtain pipe, and the air outlet of described air curtain pipe all arranges in the mode of air curtain relay by identical direction, air curtain pipe is arranged on the end of the air curtain that air curtain pipe produces described in adjacent upper level described in next stage.Therefore, air curtain relay apparatus of the present utility model in use, air curtain length as required, in air curtain direction, set gradually multiple air curtain pipes, the air curtain pipe of relay is separately positioned on the end of the air curtain being produced by the air curtain pipe of relay, the air curtain that each air curtain pipe produces is realized relay, makes the air curtain producing extend to the air curtain length needing, and has realized easily the prolongation of air curtain.
Workshop of the present utility model toxic and harmful treatment facility, apply this air curtain relay apparatus, in use can be according to the size in workshop, determine the air curtain length needing, in air curtain direction, set gradually multiple air curtain pipes, the air curtain pipe of relay is separately positioned on the end of the air curtain being produced by the air curtain pipe of relay, and the air curtain that each air curtain pipe produces is realized relay, make the air curtain producing extend to the air curtain length needing, realized easily the prolongation of air curtain.More effectively utilize the air curtain extending that the toxic and harmful in workshop is completely enclosed within the region of air curtain below, make it not to other regional diffusion, and toxic and harmful is pushed to air draught region to wind-collecting cover direction.Then under the effect of air-introduced machine, wind-collecting cover enters plenum chamber through air-introduced machine after toxic and harmful is concentrated to suction, plenum chamber is processed into the toxic and harmful entering to send into gas harmless treating apparatus after steady air flow and carry out harmless treatment, and toxic and harmful is processed after up to standard and discharged.This workshop toxic and harmful treatment facility has solved the inadequate problem of air curtain length in the time processing workshop toxic and harmful problem, can control easily the length of air curtain, effectively toxic and harmful by its processing in collecting cart.Prevent that in workshop, toxic and harmful affects the healthy of plant working workman, prevented workman because the occupational disease that in workshop, toxic and harmful causes has prevented the environmental pollution that in workshop, toxic and harmful atmosphere pollution causes.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is the structural representation of the air curtain apparatus of prior art;
Fig. 2 is the structural representation (direction of motion that in figure, the direction of arrow is air) of the air curtain relay apparatus in the utility model;
Fig. 3 is the structural representation (in figure, the direction of arrow is air movement direction) of the workshop toxic and harmful treatment facility of prior art;
Fig. 4 is the structural representation (in figure, the direction of arrow is air movement direction) of the workshop toxic and harmful treatment facility in the utility model;
Fig. 5 is the structural representation of the air curtain pipe in Fig. 2;
Fig. 6 is that the A-A of Fig. 5 is to analysing and observe enlarged diagram;
In figure: 1, supply air system; 11, new wind pressure fan; 12, air curtain pipe; 121, body; 122, the air inlet of air curtain pipe; 123, tapered shunting part; 124, air inlet short tube; 125, air inlet flange; 126, stainless steel rod; 127, the air outlet of air curtain pipe; 128, air outlet; 13, ajutage; 2, air draft system; 21, wind-collecting cover; 22, air-introduced machine; 3, process exhaust system; 31, plenum chamber; 32, gas harmless treating apparatus; 4, toxic and harmful region; 5, air curtain; 6, air draught region.
The specific embodiment
Fig. 2 is the structural representation of the air curtain relay apparatus in the utility model, Fig. 5 is the structural representation of the air curtain pipe in Fig. 2, Fig. 6 is that the A-A of Fig. 5 is to analysing and observe enlarged diagram, with reference to Fig. 2, Fig. 5 and Fig. 6, air curtain relay apparatus of the present utility model, comprise new wind pressure fan 11, the outlet air end of new wind pressure fan 11 is connected with ajutage 13, also comprise at least two-stage air curtain pipe 12, the air inlet 122 of every air curtain pipe is connected with ajutage 13 respectively, the air outlet 127 of every air curtain pipe is all along the setting that extends axially of air curtain pipe 12, and the air outlet 127 of air curtain pipe all arranges in the mode of air curtain relay by identical direction, next stage air curtain pipe 12 is arranged on the end of the air curtain that adjacent upper level air curtain pipe 12 produces, be that the air curtain abatement of wind that produces of upper level air curtain pipe 12 is to needs relay place.In the present embodiment, air curtain pipe 12 comprises two-stage, certainly, also can produce as required the length of air curtain, is provided with many air curtain pipes 12.Wherein, air curtain pipe and ajutage adopt metal material or Bian to manufacture by PVC/PF material.
The structural representation (in figure, the direction of arrow is air movement direction) of the workshop toxic and harmful treatment facility of Fig. 3 prior art; As shown in Figure 3, the workshop toxic and harmful treatment facility of prior art, has applied the air curtain apparatus of prior art, comprises a new wind pressure fan and an air curtain pipe, is not easy to control the length of air curtain.
Fig. 4 is the structural representation of the workshop toxic and harmful treatment facility in the utility model; Fig. 5 is the structural representation of the air curtain pipe in Fig. 2; Fig. 6 is that the A-A of Fig. 4 is to analysing and observe enlarged diagram; With reference to Fig. 4, Fig. 5 and Fig. 6, workshop of the present utility model toxic and harmful treatment facility, comprises supply air system 1, the air draft system 2 setting gradually and processes exhaust system 3; Supply air system 1 comprises new wind pressure fan 11, the outlet air end of new wind pressure fan 11 is connected with ajutage 13, also comprise at least two-stage air curtain pipe 12, the air inlet 122 of every air curtain pipe is connected with ajutage 13 respectively, the air outlet 127 of every air curtain pipe is all along the setting that extends axially of air curtain pipe 12, and the air outlet 127 of air curtain pipe all arranges in the mode of air curtain relay by identical direction, next stage air curtain pipe 12 is arranged on the end of the air curtain that adjacent upper level air curtain pipe 12 produces.In the present embodiment, air curtain pipe 12 comprises two-stage, certainly, also can produce as required the length of air curtain, is provided with many air curtain pipes 12.Air draft system 2 comprises wind-collecting cover 21, and it is rectangular horn-like that the air intake of wind-collecting cover 21 is.The air intake of wind-collecting cover 21 is oppositely arranged towards toxic and harmful region 4 and with the air outlet 127 of air curtain pipe, and the outlet air end of wind-collecting cover 21 is connected with air-introduced machine 22; Process exhaust system 3 and comprise static press device, in the present embodiment, static press device is plenum chamber 31, and the entrance point of plenum chamber 31 is connected to the outlet air end of air-introduced machine 22, and the port of export of plenum chamber 31 is connected to gas harmless treating apparatus 32.Air-introduced machine 22 is located in air box or outside air box, and many air-introduced machines 22 use in parallel can be set in air box.Certainly, static press device also can adopt static pressure pipeline.
As shown in Fig. 5 and Fig. 6 are common, in the present embodiment, air curtain pipe 12 comprises body 121, and the air inlet 122 of air curtain pipe is positioned at the middle part of body 121 or is positioned at the port of body 121, and the air outlet of air curtain pipe 12 extends axially to the two ends of body 121 along body 121.Air outlet 127 places of air curtain pipe are provided with the air outlet 128 of flat, and air outlet 128 extends axially to the two ends of body 121 along body 121, and arrange along the tangent line of body 121 or in the radially 0-90 of body 121 degree angular range.In the present embodiment, the setting that is inclined upwardly of the air outlet 128 of air curtain pipe 12, becomes 8 ° of angles with horizontal line.The position of the air inlet 122 of inner corresponding the air curtain pipe of body 121 is fixed with tapered shunting part 123.The air inlet 122 of the periphery of tapered shunting part 123 and air curtain pipe is connected with connecting rod, in the present embodiment, is to be welded to connect by stainless steel rod 126, and certainly, air curtain pipe 12 and each parts thereof, in the time adopting PVC/PF material, can adopt adhesive bonding method to connect.The air inlet of air curtain pipe is provided with air inlet flange 125, for being connected air curtain pipe 12 and ajutage 13.In the present embodiment, the stainless steel rod 126 of the six roots of sensation, along the distribution of the even circumferential of air inlet short tube 124 and tapered shunting part 123, has played good supporting role to tapered shunting part 123, has reduced again air intake resistance.
Workshop of the present utility model toxic and harmful treatment facility, apply the relay apparatus of air curtain shown in Fig. 2, in use can be according to the size in workshop, determine the air curtain length needing, in air curtain direction, set gradually multiple air curtain pipes 12, the air curtain pipe 12 of relay is separately positioned on the end of the air curtain being produced by the air curtain pipe 12 of relay, and the air curtain that each air curtain pipe 12 produces is realized relay, make the air curtain producing extend to the air curtain length needing, realized easily the prolongation of air curtain.More effectively utilize the air curtain 5 extending that the toxic and harmful in workshop is completely enclosed within the region of air curtain 5 belows, make it not to other regional diffusion, and toxic and harmful is pushed to air draught region 6 to wind-collecting cover 21 directions.Then under the effect of air-introduced machine 22, wind-collecting cover 21 enters plenum chamber 31 through air-introduced machine 22 after toxic and harmful is concentrated to suction, and plenum chamber 31 is sent into discharge flue after the toxic and harmful entering is processed into steady air flow, wherein, and gas high altitude discharge up to standard; Gas not up to standard is sent into gas harmless treating apparatus 32 again and is carried out harmless treatment, and toxic and harmful is processed after up to standard and discharged.This workshop toxic and harmful treatment facility has solved the inadequate problem of air curtain length in the time processing workshop toxic and harmful problem, can control easily the length of air curtain 5, more effectively toxic and harmful by its processing in collecting cart.Prevent that in workshop, toxic and harmful affects the healthy of plant working workman, prevented workman because the occupational disease that in workshop, toxic and harmful causes has prevented the environmental pollution that in workshop, toxic and harmful atmosphere pollution causes.
In the present embodiment, the placement that is inclined upwardly of the air outlet 128 of air curtain pipe 12, tilts the air curtain 5 that air curtain pipe 12 forms, and is more conducive to promote toxic and harmful in workshop and moves to wind-collecting cover 21.The air outlet 127 of air curtain pipe, along the tangent line setting of body 121, has improved the air-out speed of the air outlet 127 of air curtain pipe, has namely improved the translational speed of air curtain 5.The air inlet 122 of air curtain pipe is positioned at the middle part of body 121, and the position of the air inlet 122 of inner corresponding the air curtain pipe of body 121 is fixed with tapered shunting part 123.This structure is disperseed the wind of coming in from the air inlet at the middle part of body 121 uniformly, makes the interior horizontal each region air quantity equilibrium of body 121, thereby makes air outlet 127 air-out of air curtain pipe even, makes air curtain 5 translational speeds of formation even.Certainly, the air inlet 122 of air curtain pipe also can be arranged at the port of body 121.
In addition, air curtain relay apparatus of the present utility model is not limited to said structure, can also comprise multiple new wind pressure fans, and every grade of air curtain pipe connects a new wind pressure fan, or some grades of air curtain pipes share a new wind pressure fan or several new wind pressure fan.The gas air inducing discharge of plenum chamber or static pressure pipeline, can connect an air-introduced machine by each wind-collecting cover, or after the shared plenum chamber of the air draught of several wind-collecting covers remittance or static pressure pipeline, shares an air-introduced machine or several air-introduced machine.
The above is giving an example of the utility model preferred forms, and the part of wherein not addressing is in detail those of ordinary skills' common practise.Protection domain of the present utility model is as the criterion with the content of claim, and any equivalent transformation carrying out based on technology enlightenment of the present utility model, also within protection domain of the present utility model.
Claims (10)
1. an air curtain relay apparatus, comprise new wind pressure fan, the outlet air end of described new wind pressure fan is connected with ajutage, it is characterized in that: also comprise at least two-stage air curtain pipe, the air inlet of every described air curtain pipe is connected with described ajutage respectively, the air outlet of every described air curtain pipe is all along the setting that extends axially of described air curtain pipe, and the air outlet of described air curtain pipe all arranges in the mode of air curtain relay by identical direction, air curtain pipe is arranged on the end of the air curtain that air curtain pipe produces described in adjacent upper level described in next stage.
2. air curtain relay apparatus as claimed in claim 1, is characterized in that: described air curtain pipe comprises body, and the air inlet of described air curtain pipe is arranged on the middle part of its body or the port of its body; The air outlet place of described air curtain pipe is provided with the air outlet of flat.
3. air curtain relay apparatus as claimed in claim 2, is characterized in that: described air outlet arranges along the tangential direction of described body or in the radially 0-90 of described body degree angular range.
4. air curtain relay apparatus as claimed in claim 3, is characterized in that: the position of the air inlet of the inner corresponding described air curtain pipe of body of described air curtain pipe is fixed with tapered shunting part.
5. air curtain relay apparatus as claimed in claim 4, is characterized in that: the air inlet of the periphery of described tapered shunting part and described air curtain pipe is connected with connecting rod.
6. a workshop toxic and harmful treatment facility, is characterized in that, comprises the supply air system, air draft system and the processing exhaust system that set gradually;
Described supply air system comprises new wind pressure fan, the outlet air end of described new wind pressure fan is connected with ajutage, also comprise at least two-stage air curtain pipe, the air inlet of every described air curtain pipe is connected with described ajutage respectively, the air outlet of every described air curtain pipe is all along the setting that extends axially of described air curtain pipe, and the air outlet of described air curtain pipe all arranges in the mode of air curtain relay by identical direction, air curtain pipe is arranged on the end of the air curtain that air curtain pipe produces described in adjacent upper level described in next stage;
Described air draft system comprises wind-collecting cover, and the air intake of described wind-collecting cover is oppositely arranged towards toxic and harmful region and with the air outlet of described air curtain pipe, and the outlet air end of described wind-collecting cover is connected with air-introduced machine;
Described processing exhaust system comprises static press device, and the entrance point of described static press device is connected to the outlet air end of described air-introduced machine, and the port of export of described static press device is connected to gas harmless treating apparatus.
7. workshop as claimed in claim 6 toxic and harmful treatment facility, is characterized in that: described air curtain pipe comprises body, the air inlet of described air curtain pipe is arranged on the middle part of its body or the port of its body; The air outlet place of described air curtain pipe is provided with the air outlet of flat, and described air outlet arranges along the tangential direction of described body or in the radially 0-90 of described body degree angular range.
8. workshop as claimed in claim 7 toxic and harmful treatment facility, is characterized in that: the setting that is inclined upwardly of described air outlet.
9. workshop as claimed in claim 8 toxic and harmful treatment facility, it is characterized in that: the position of the air inlet of the inner corresponding described air curtain pipe of body of described air curtain pipe is fixed with tapered shunting part, and the air inlet of the periphery of described tapered shunting part and described air curtain pipe is connected with connecting rod.
10. the workshop toxic and harmful treatment facility as described in claim 6 to 9 any one, is characterized in that: the air intake of described wind-collecting cover is horn-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320788022.XU CN203615537U (en) | 2013-12-03 | 2013-12-03 | Air curtain relay device and workshop poisonous and harmful gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320788022.XU CN203615537U (en) | 2013-12-03 | 2013-12-03 | Air curtain relay device and workshop poisonous and harmful gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203615537U true CN203615537U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320788022.XU Expired - Lifetime CN203615537U (en) | 2013-12-03 | 2013-12-03 | Air curtain relay device and workshop poisonous and harmful gas treatment device |
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| CN (1) | CN203615537U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737321A (en) * | 2016-05-16 | 2016-07-06 | 安徽新知科技股份有限公司 | Acid etching workshop protection system |
| CN106403139A (en) * | 2016-11-14 | 2017-02-15 | 江苏中利石化设备有限公司 | Air curtain temperature isolating wall |
-
2013
- 2013-12-03 CN CN201320788022.XU patent/CN203615537U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737321A (en) * | 2016-05-16 | 2016-07-06 | 安徽新知科技股份有限公司 | Acid etching workshop protection system |
| CN106403139A (en) * | 2016-11-14 | 2017-02-15 | 江苏中利石化设备有限公司 | Air curtain temperature isolating wall |
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