CN220040356U - Critical oxygen index measuring device - Google Patents
Critical oxygen index measuring device Download PDFInfo
- Publication number
- CN220040356U CN220040356U CN202321193722.4U CN202321193722U CN220040356U CN 220040356 U CN220040356 U CN 220040356U CN 202321193722 U CN202321193722 U CN 202321193722U CN 220040356 U CN220040356 U CN 220040356U
- Authority
- CN
- China
- Prior art keywords
- gas mixing
- oxygen index
- support
- support column
- storage cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000001301 oxygen Substances 0.000 title claims abstract description 25
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 42
- 238000002485 combustion reaction Methods 0.000 claims abstract description 28
- 239000011521 glass Substances 0.000 claims abstract description 22
- 230000001681 protective effect Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 239000011324 bead Substances 0.000 abstract description 18
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model provides a critical oxygen index measuring device, which comprises a base, a box body arranged on the base and a combustion device, wherein the box body is provided with a first measuring device and a second measuring device; the combustion device comprises a gas mixing cylinder, a support column arranged at the bottom of the gas mixing cylinder, a storage cylinder body which is arranged in the gas mixing cylinder and is provided with an opening above the gas mixing cylinder, a protection plate which is arranged at the opening of the storage cylinder body and is sleeved on the support column, and a combustion support which is arranged at the top end of the support column; the storage cylinder is in sliding connection with the support column and is detachably connected with the gas mixing cylinder, and glass beads are filled in the storage cylinder; according to the measuring device, the storage cylinder body which is detachable from the gas mixing cylinder is arranged, so that glass beads can be conveniently placed in the storage cylinder body, and meanwhile, the glass beads can be simultaneously taken out when the storage cylinder body is taken out, so that the glass beads can be conveniently removed completely and cleaned.
Description
Technical Field
The utility model relates to the technical field of experimental devices, in particular to a critical oxygen index measuring device.
Background
The rapid development of technology, people pay more and more attention to the problems of material safety, fire resistance and material flame retardance, and particularly, oxygen concentration critical point test is carried out on plastics according to a national standard test method; and oxygen index refers to the minimum oxygen concentration required for a material to undergo flame combustion in an oxygen-nitrogen mixed gas stream under specified conditions. A high oxygen index indicates that the material is not easily burned, a low oxygen index indicates that the material is easily burned, and oxygen and nitrogen mixing and flow regulating devices, and apparatus for burning a sample of the material are required to complete the oxygen index determination of the material.
In the prior art, in the testing process, the gas mixing is more uniform by arranging glass beads, most of the glass beads are directly placed in a gas mixing cylinder at present, for example, chinese patent publication No. CN205404518U, and a building material oxygen index tester is disclosed, however, ash is inevitably dropped into the glass beads in the burning process, so the glass beads are required to be poured out and cleaned regularly, and the glass beads are difficult to pour out by adopting the structure.
In view of this, the present inventors have specifically devised a critical oxygen index measuring apparatus, which is produced by this.
Disclosure of Invention
In order to solve the problems, the technical scheme of the utility model is as follows:
a critical oxygen index measuring device comprises a base, a box body arranged on the base and a combustion device;
the combustion device comprises a gas mixing cylinder, a support column arranged at the bottom of the gas mixing cylinder, a storage cylinder body which is arranged in the gas mixing cylinder and is provided with an opening above the gas mixing cylinder, a protection plate which is arranged at the opening of the storage cylinder body and is sleeved on the support column, and a combustion support which is arranged at the top end of the support column; the storage cylinder is connected with the support column in a sliding manner and is detachably connected with the gas mixing cylinder, and glass beads are filled in the storage cylinder.
Further, the bottom of the gas mixing cylinder is further provided with a first through hole communicated with the inside, and the protection plate is provided with a second through hole.
Further, the combustion support comprises a first support arranged at the top of the support column and detachably connected with the support column, and a second support arranged above the first support and detachably connected with the first support.
Further, the first bracket is further provided with an internal threaded hole, and the combustion device further comprises a bolt used for locking the first bracket on the support column.
Further, a collecting table is further arranged on the first support.
Further, the inner side wall of the gas mixing cylinder is provided with an annular step for placing the storage cylinder.
Further, a spring is arranged between the bottom of the gas mixing cylinder and the bottom of the storage cylinder, and the spring is sleeved on the support column.
Further, a sealing ring is arranged between the bottom of the storage cylinder body and the annular step.
Further, the combustion device further comprises a protective cover sleeved on the combustion device, and the protective cover is made of transparent high-temperature resistant materials.
Further, an opening for the flame gun to extend in is formed in the top end of the protective cover.
Furthermore, the protection casing adopts the glass material, just be located the gas mixing section of thick bamboo lateral wall on the base and set up the protection pad.
Furthermore, the protection pad is made of rubber.
Further, a placing seat for placing the protective cover is further arranged on the base.
Furthermore, the placing seat is in a ladder shape and is made of rubber materials.
According to the measuring device, the storage cylinder body which is detachable from the gas mixing cylinder is arranged, so that glass beads can be conveniently placed in the storage cylinder body, and meanwhile, the glass beads can be simultaneously taken out when the storage cylinder body is taken out, so that the glass beads can be conveniently removed completely and cleaned.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model.
Wherein:
FIG. 1 is a schematic view of the structure of an measuring apparatus of the present utility model;
FIG. 2 is an exploded view of the combustion apparatus of the present utility model;
FIG. 3 is a cross-sectional view of the combustion apparatus of the present utility model;
FIG. 4 is an enlarged view of a portion of FIG. 3 in accordance with the present utility model;
FIG. 5 is a partial schematic view of a storage cylinder of the present utility model;
fig. 6 is a view showing a state in which the shield of the present utility model is placed.
Description of the reference numerals:
10. a base; 20. a case; 30. a combustion device; 31. a gas mixing drum; 311. an annular step; 32. a support column; 33. a storage cylinder; 34. a protection plate; 35. a combustion support; 351. a first bracket; 3511. a collection station; 352. a second bracket; 36. a bolt; 37. a spring; 38. a seal ring; 40. a protective cover; 50. a protective pad; 60. and (5) placing a seat.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 to 6, a device for determining a critical oxygen index according to a preferred embodiment of the present utility model includes a base 10, a case 20 disposed on the base 10, and a combustion device 30; the combustion device 30 comprises a gas mixing cylinder 31, a support column 32 arranged at the bottom of the gas mixing cylinder 31, a storage cylinder 33 arranged in the gas mixing cylinder 31 and provided with an opening above, a protection plate 34 arranged at the opening of the storage cylinder 33 and sleeved on the support column 32, and a combustion support 35 arranged at the top end of the support column 32; the storage cylinder 33 is slidably connected with the support column 32 and detachably connected with the gas mixing cylinder 31, and glass beads are filled in the storage cylinder 33. The internal and external structures of the case 20 of the present utility model are all of the prior art, and how to realize ventilation into the gas mixing drum 31 is also of the prior art, and detailed description thereof is omitted.
The bottom of the gas mixing drum 31 is further provided with a first through hole communicated with the inside, and the protection plate 34 is provided with a second through hole. The inner side wall of the gas mixing drum 31 is provided with an annular step 311 for placing the storage drum 33, a sealing ring 38 is arranged between the bottom of the storage drum 33 and the annular step 311, and the bottom of the storage drum 33 is provided with an annular groove so as to be embedded into the sealing ring 38; the side wall of the gas mixing drum 31 is provided with a gas inlet hole below the annular step 311, and the structure is consistent with the prior art and will not be described in detail.
The combustion bracket 35 includes a first bracket 351 disposed on top of the support post 32 and detachably connected to the support post 32, and a second bracket 352 disposed above the first bracket 351 and detachably connected to the first bracket 351; the first bracket 351 is further provided with an internally threaded hole, and the combustion apparatus 30 further includes a bolt 36 for locking the first bracket 351 to the support post 32. The collecting table 3511 is further arranged on the first support 351, the second support 352 is used for installing materials to be tested, the installation mode is the prior art, the stand column is arranged above the first support 351, and the installation mode of the second support 352 and the stand column is just considered as the installation mode of the first support 351.
The spring 37 is arranged between the bottom of the gas mixing cylinder 31 and the bottom of the storage cylinder 33, the spring 37 is sleeved on the support column 32, after installation is completed, the spring 37 stores elastic potential energy, the storage cylinder 33 is limited inside the gas mixing cylinder 31 through the first part, the spring 37, the storage cylinder 33 and the protection plate 34 are firstly installed in sequence, then the first support 351 is arranged at the top of the support column 32, the storage cylinder 33 and the protection plate 34 are pressed downwards, after the position is reached, the first support 351 is locked at the top end of the support column 32 by the bolts 36, when glass beads in the storage cylinder 33 are required to be taken out for ash removal, the bolts 36 are loosened, the storage cylinder 33 is taken down in sequence, and meanwhile the storage cylinder 33 is automatically ejected under the action of the spring 37, so that the storage cylinder 33 is convenient to take out rapidly.
The utility model also comprises a protective cover 40 sleeved on the combustion device 30, wherein the protective cover 40 is made of transparent high-temperature resistant materials; the top end of the shield 40 is provided with an opening for the flame gun to extend into. The protective cover 40 is made of glass material so as to observe the combustion condition inside; the base 10 is provided with a protection pad 50 on the outer side wall of the gas mixing drum 31, and the protection pad 50 is made of rubber material to protect the glass protection cover 40.
The base 10 is further provided with a placing seat 60 for placing the protective cover 40, the placing seat 60 is of a ladder shape, and is made of rubber, when a material to be tested needs to be installed or glass beads are subjected to ash removal operation, the protective cover 40 needs to be taken down from the gas mixing drum 31, and at the moment, the protective cover 40 can be placed on the placing seat 60 to prevent the protective cover from being broken due to careless spraying.
In summary, according to the measuring device provided by the utility model, the storage cylinder body which is detachable from the gas mixing cylinder is arranged, so that glass beads can be conveniently put in, and meanwhile, the storage cylinder body can be taken out, and meanwhile, the glass beads can be conveniently removed and cleaned; meanwhile, the bottom of the storage cylinder body is provided with the spring, so that the storage cylinder body can be conveniently ejected out of the gas mixing cylinder, and the storage cylinder body can be conveniently and quickly taken out.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the above embodiments, but is capable of being modified or applied directly to other applications without modification, as long as various insubstantial modifications of the method concept and technical solution of the utility model are adopted, all within the scope of the utility model.
Claims (10)
1. The critical oxygen index measuring device is characterized by comprising a base (10), a box body (20) arranged on the base (10) and a combustion device (30);
the combustion device (30) comprises a gas mixing cylinder (31), a support column (32) arranged at the bottom of the gas mixing cylinder (31), a storage cylinder body (33) arranged in the gas mixing cylinder (31) and provided with an opening above, a protection plate (34) arranged at the opening of the storage cylinder body (33) and sleeved on the support column (32), and a combustion support (35) arranged at the top end of the support column (32); the storage cylinder body (33) is connected with the support column (32) in a sliding manner and is detachably connected with the gas mixing cylinder (31).
2. The critical oxygen index measuring apparatus as claimed in claim 1 wherein the combustion support (35) comprises a first support (351) disposed on top of the support column (32) and detachably connected to the support column (32), and a second support (352) disposed above the first support (351) and detachably connected to the first support (351).
3. The critical oxygen index measuring apparatus as claimed in claim 2 wherein said first bracket (351) is further provided with an internally threaded bore, said combustion apparatus (30) further comprising a bolt (36) for locking the first bracket (351) to the support column (32).
4. The critical oxygen index measuring apparatus as claimed in claim 2, wherein a collection table (3511) is further provided on the first support (351).
5. The critical oxygen index measuring device according to claim 1, wherein the inner side wall of the gas mixing cylinder (31) is provided with an annular step (311) for placing the storage cylinder (33).
6. The critical oxygen index measuring device according to claim 1, wherein a spring (37) is arranged between the bottom of the gas mixing cylinder (31) and the bottom of the storage cylinder (33), and the spring (37) is sleeved on the support column (32).
7. The critical oxygen index measuring apparatus as claimed in claim 1 further comprising a protective cover (40) sleeved on the combustion device (30), wherein the protective cover (40) is made of transparent high temperature resistant material.
8. The critical oxygen index measuring apparatus as claimed in claim 7, wherein the protective cover (40) is made of glass, and a protective pad (50) is disposed on the base (10) and located on the outer side wall of the gas mixing cylinder (31).
9. The critical oxygen index measuring apparatus as claimed in claim 1, wherein a placement seat (60) for placing the protective cover (40) is further provided on the base (10).
10. The critical oxygen index measuring apparatus as claimed in claim 9, wherein said placement base (60) is formed in a stepped shape using a rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321193722.4U CN220040356U (en) | 2023-05-17 | 2023-05-17 | Critical oxygen index measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321193722.4U CN220040356U (en) | 2023-05-17 | 2023-05-17 | Critical oxygen index measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220040356U true CN220040356U (en) | 2023-11-17 |
Family
ID=88742997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321193722.4U Active CN220040356U (en) | 2023-05-17 | 2023-05-17 | Critical oxygen index measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220040356U (en) |
-
2023
- 2023-05-17 CN CN202321193722.4U patent/CN220040356U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |