CN216081937U - A instrument for detecting grinding roller is with passing through lid gas tightness - Google Patents
A instrument for detecting grinding roller is with passing through lid gas tightness Download PDFInfo
- Publication number
- CN216081937U CN216081937U CN202122609120.XU CN202122609120U CN216081937U CN 216081937 U CN216081937 U CN 216081937U CN 202122609120 U CN202122609120 U CN 202122609120U CN 216081937 U CN216081937 U CN 216081937U
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- pressure plate
- upper pressure
- cover
- groove
- sealing ring
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- 238000007789 sealing Methods 0.000 claims abstract description 85
- 238000003825 pressing Methods 0.000 claims abstract description 33
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
A tool for detecting the gas tightness of a through cover for a grinding roll, comprising: the device comprises a lower pressing plate, an upper pressing plate and an air inlet device, wherein the lower pressing plate, the upper pressing plate, the air inlet device and a transparent cover are assembled to form a closed structure for a pressurization test; a first deep groove and a second deep groove for accommodating transparent covers with different diameters are sequentially arranged from top to bottom by taking the inner axis of the lower pressing plate as the center; the other side of the transparent cover is connected with the upper pressure plate; the upper pressure plate is provided with a through hole; the air inlet device is connected to the through hole of the upper pressure plate. The tool has the advantages of simple structure, convenience in operation, good sealing performance and high assembly quality, and can effectively detect whether the transparent cover has casting defects or not and improve the assembly speed of the grinding roller; the cover has wide application range, can select the lower pressing plate and the upper pressing plate with different sizes to match different working conditions according to the transparent covers with different models, has multiple functions, and saves the tool cost.
Description
Technical Field
The utility model relates to the technical field of through cover air tightness detection, in particular to a tool for detecting the air tightness of a through cover for a grinding roller.
Background
Grinding rolls occupy an indispensable position in many types of coal mills. The quality of the air tightness of the grinding roller directly determines the service life of the grinding roller. In the sealing assembly of the grinding roller, the transparent cover is the largest and can only be used in a casting process in combination with actual working conditions. Flaw detection cannot be performed due to problems of machining process and material of the casting. The presence of cracks in the through cover itself and the influence of cracks on the gas tightness are therefore unknown and can only be determined by pressing during the assembly of the grinding roller. This is not only time consuming but also very wasteful.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the utility model aims to provide a tool for detecting the air tightness of a through cover for a grinding roller.
The utility model adopts the following technical scheme:
a tool for detecting the gas tightness of a through cover for a grinding roll, comprising: the device comprises a lower pressing plate, an upper pressing plate and an air inlet device, wherein the lower pressing plate, the upper pressing plate, the air inlet device and a transparent cover are assembled to form a closed structure for a pressurization test; the inner axis of the lower pressing plate is taken as a center, and two first deep grooves and two second deep grooves for accommodating through covers with different diameters are sequentially arranged from top to bottom; the diameter of the first deep groove is larger than that of the second deep groove; the other side of the transparent cover is connected with the upper pressure plate; the upper pressure plate is provided with a through hole; the air inlet device is connected to the through hole of the upper pressure plate.
Preferably, a lower pressing plate sealing ring is arranged between the transparent cover and the lower pressing plate.
Preferably, the lower pressure plate sealing ring comprises a first sealing ring and a second sealing ring, and is used for being suitable for transparent covers with different sizes.
Preferably, an upper pressure plate sealing ring is arranged between the transparent cover and the upper pressure plate.
Preferably, the lower pressure plate is provided with a first sealing groove and a second sealing groove which are different in size.
Preferably, the first sealing groove and the second sealing groove are used for accommodating the first sealing ring and the second sealing ring.
Preferably, an upper pressure plate sealing groove is arranged on the upper pressure plate.
Preferably, the upper platen sealing groove is used for accommodating the upper platen sealing ring.
Preferably, the first deep groove matches with the first seal ring and the first seal groove.
Preferably, the first seal ring and the first seal groove have the same diameter.
Preferably, the diameter of the first deep groove is smaller than the diameter of the first seal ring and the first seal groove.
Preferably, the second deep groove matches with the second seal ring and the second seal groove.
Preferably, the second seal ring and the second seal groove have the same diameter.
Preferably, the diameters of the first sealing ring and the second sealing groove are larger than the diameter of the second deep groove and smaller than the diameter of the first deep groove.
Preferably, the upper pressure plate sealing groove has the same diameter as the upper pressure plate sealing ring.
Preferably, the diameters of the upper pressure plate sealing groove and the upper pressure plate sealing ring are larger than the diameter of the through cover middle hole and smaller than the diameter of the upper pressure plate.
Preferably, the upper sides of the groove walls of the first deep groove and the second deep groove of the lower pressure plate are respectively provided with a first threaded hole and a second threaded hole.
Preferably, the transparent cover is fixed to the first threaded hole or the second threaded hole by a screw so as to be connected to the lower pressing plate.
Preferably, the upper pressure plate is further provided with a counter bore.
Preferably, a screw passes through the counter bore and is connected to a screw hole on the transparent cover, so that the upper pressure plate is connected with the transparent cover.
Compared with the prior art, the utility model has the beneficial effects that:
the tool for detecting the air tightness of the transparent cover for the grinding roller, provided by the utility model, has the advantages of simple structure, simplicity and convenience in operation, good air tightness and high assembly quality, and can effectively detect whether the transparent cover has casting defects or not and improve the assembly speed of the grinding roller; the cover has wide application range, can select the lower pressing plate and the upper pressing plate with different sizes to match different working conditions according to the transparent covers with different models, has multiple functions, and saves the tool cost.
Drawings
FIG. 1 is a cross-sectional view of a tool for testing the airtightness of a transparent cover for a grinding roller according to the present invention;
FIG. 2 is an oblique view of a tool for checking the airtightness of a through cover for a grinding roller according to the present invention;
in the figure:
1-pressing a plate;
11-a first sealing groove;
12-a second sealing groove;
13-a first threaded hole;
14-a second threaded hole;
2-pressing plate sealing ring;
21-a first sealing ring;
22-a second sealing ring;
3, an upper pressing plate;
31-sealing the groove by an upper pressure plate;
32-a via hole;
33-upper press plate counter bore;
4-upper pressure plate sealing ring.
5-air inlet device.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
As shown in fig. 1 and fig. 2, the tool for detecting the airtightness of the through cover for the grinding roller of the present invention mainly comprises: a lower platen 1, an upper platen 3, and an air intake device 5.
The lower pressing plate 1, the upper pressing plate 3, the air inlet device 5 and the transparent cover are assembled to form a closed structure for pressurization testing, two first deep grooves and two second deep grooves which are different in size and used for containing the transparent covers are sequentially arranged from top to bottom by taking the inner axis of the lower pressing plate 1 as the center, and preferably the diameter of each first deep groove is larger than that of each second deep groove.
The other side of the transparent cover is connected with the upper pressure plate 3, a through hole 32 is arranged on the upper pressure plate 3, and the air inlet device 5 is connected to the through hole 32 of the upper pressure plate 3.
Be provided with lower pressure plate sealing washer 2 between passing through lid and lower pressure plate 1, lower pressure plate sealing washer 2 includes first sealing washer 21 and second sealing washer 22 for be suitable for not unidimensional passing through lid.
The lower pressure plate 1 is provided with a first seal groove 11 and a second seal groove 12 having different sizes, and the first seal groove 11 and the second seal groove 12 are configured to accommodate a first seal ring 21 and a second seal ring 22.
The first deep groove is matched with the first sealing ring 21 and the first sealing groove 11, the diameter of the first sealing ring 21 is the same as that of the first sealing groove 11, and the diameter of the first deep groove is smaller than that of the first sealing ring 21 and the first sealing groove 11.
The second deep groove is matched with the second sealing ring 22 and the second sealing groove 12, the diameter of the second sealing ring 22 is the same as that of the second sealing groove 12, and the diameter of the first sealing ring 21 and the diameter of the second sealing groove 12 are larger than that of the second deep groove and smaller than that of the first deep groove.
An upper pressure plate sealing ring 4 is arranged between the transparent cover and the upper pressure plate 3.
An upper pressure plate sealing groove 31 is formed in the upper pressure plate 3, and the upper pressure plate sealing groove 31 is used for accommodating the upper pressure plate sealing ring 4.
The diameter of the upper pressure plate sealing groove 31 is the same as that of the upper pressure plate sealing ring 4, and the diameter of the upper pressure plate sealing groove 31 and that of the upper pressure plate sealing ring 4 are larger than that of the through cover central hole and smaller than that of the upper pressure plate 3.
The upper sides of the groove walls of the first deep groove and the second deep groove of the lower pressing plate 1 are respectively provided with a first threaded hole 13 and a second threaded hole 14, and the transparent cover is fixed on the first threaded hole 13 or the second threaded hole through screws so as to be connected with the lower pressing plate 1.
The upper pressure plate 3 is also provided with a counter bore 33, and a screw passes through the counter bore 33 and is connected to a screw hole on the transparent cover, so that the upper pressure plate 3 is connected with the transparent cover.
The preferred level of holding down plate 1 is placed, according to the not unidimensional that covers thoroughly, choose for use first deep trouth or second deep trouth to detect, and choose for use and place corresponding first sealed slot 11 or the second sealed slot 12 with the holding down plate sealing washer 2 that corresponds of corresponding deep trouth, and choose for use corresponding first screw hole 13 or second screw hole 14, be connected holding down plate 1 with covering thoroughly through the screw, air inlet unit 5 preferably adopts welded mode to be connected to the through-hole 32 department of top board 3, place top board sealing washer 4 in the sealed slot 31 of top board on top board 3, pass counter bore 33 through the screw, make top board 3 be connected with the another side of covering thoroughly. Inert gas is flushed into a space formed by the transparent cover and the lower pressing plate 1 through the gas inlet device 5, and whether the transparent cover leaks gas or not is judged according to the change of the gas pressure on the gas inlet device 5.
Compared with the prior art, the utility model has the beneficial effects that:
the tool for detecting the air tightness of the transparent cover for the grinding roller, provided by the utility model, has the advantages of simple structure, simplicity and convenience in operation, good air tightness and high assembly quality, and can effectively detect whether the transparent cover has casting defects or not and improve the assembly speed of the grinding roller; the cover has wide application range, can select the lower pressing plate and the upper pressing plate with different sizes to match different working conditions according to the transparent covers with different models, has multiple functions, and saves the tool cost.
The applicant has described and illustrated embodiments of the present invention in detail with reference to the drawings attached hereto, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (10)
1. A tool for detecting the gas tightness of a through cover for a grinding roll, comprising: holding down plate (1), top board (3) and air inlet unit (5), its characterized in that:
the lower pressure plate (1), the upper pressure plate (3), the air inlet device (5) and the transparent cover are assembled to form a closed structure for a pressurization test;
the inner axis of the lower pressing plate (1) is taken as a center, and two first deep grooves and two second deep grooves for accommodating through covers with different diameters are sequentially arranged from top to bottom;
the diameter of the first deep groove is larger than that of the second deep groove;
the other side of the transparent cover is connected with the upper pressure plate (3);
the upper pressure plate (3) is provided with a through hole (32);
the air inlet device (5) is connected to the through hole (32) of the upper pressure plate (3).
2. A tool for detecting the airtightness of a through cover for a grinding roller according to claim 1, wherein:
a lower pressing plate sealing ring (2) is arranged between the transparent cover and the lower pressing plate (1);
the lower pressure plate sealing ring (2) comprises a first sealing ring (21) and a second sealing ring (22) and is suitable for transparent covers with different sizes.
3. A tool for detecting the airtightness of a through cover for a grinding roller according to claim 1, wherein:
an upper pressure plate sealing ring (4) is arranged between the transparent cover and the upper pressure plate (3).
4. A tool for detecting the airtightness of a through cover for a grinding roller according to claim 2, wherein:
the lower pressure plate (1) is provided with a first sealing groove (11) and a second sealing groove (12) which have different sizes;
the first sealing groove (11) and the second sealing groove (12) are used for accommodating the first sealing ring (21) and the second sealing ring (22).
5. A tool for detecting the airtightness of a through cover for a grinding roller according to claim 3, wherein:
an upper pressure plate sealing groove (31) is formed in the upper pressure plate (3);
the upper pressure plate sealing groove (31) is used for accommodating the upper pressure plate sealing ring (4).
6. A tool for detecting the airtightness of a through cover for a grinding roller according to claim 4, wherein:
the first deep groove is matched with the first sealing ring (21) and the first sealing groove (11);
the diameter of the first sealing ring (21) is the same as that of the first sealing groove (11);
the diameter of the first deep groove is smaller than the diameters of the first sealing ring (21) and the first sealing groove (11).
7. A tool for detecting the airtightness of a through cover for a grinding roller according to claim 4, wherein:
the second deep groove is matched with the second sealing ring (22) and the second sealing groove (12);
the diameter of the second sealing ring (22) is the same as that of the second sealing groove (12);
the diameters of the first sealing ring (21) and the second sealing groove (12) are larger than the diameter of the second deep groove and smaller than the diameter of the first deep groove.
8. A tool for detecting the airtightness of a through cover for a grinding roller according to claim 5, wherein:
the diameter of the upper pressure plate sealing groove (31) is the same as that of the upper pressure plate sealing ring (4);
the diameters of the upper pressure plate sealing groove (31) and the upper pressure plate sealing ring (4) are larger than the diameter of the through cover middle hole and smaller than the diameter of the upper pressure plate (3).
9. A tool for detecting the airtightness of a through cover for a grinding roller according to claim 1, wherein:
the upper sides of the groove walls of the first deep groove and the second deep groove of the lower pressing plate (1) are respectively provided with a first threaded hole (13) and a second threaded hole (14);
the transparent cover is fixed on the first threaded hole (13) or the second threaded hole through screws so as to be connected with the lower pressure plate (1).
10. A tool for detecting the airtightness of a through cover for a grinding roller according to claim 1, wherein:
a counter bore (33) is also arranged on the upper pressure plate (3);
and a screw penetrates through the counter bore (33) and is connected to a screw hole on the transparent cover, so that the upper pressure plate (3) is connected with the transparent cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122609120.XU CN216081937U (en) | 2021-10-28 | 2021-10-28 | A instrument for detecting grinding roller is with passing through lid gas tightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122609120.XU CN216081937U (en) | 2021-10-28 | 2021-10-28 | A instrument for detecting grinding roller is with passing through lid gas tightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216081937U true CN216081937U (en) | 2022-03-18 |
Family
ID=80642316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122609120.XU Expired - Fee Related CN216081937U (en) | 2021-10-28 | 2021-10-28 | A instrument for detecting grinding roller is with passing through lid gas tightness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216081937U (en) |
-
2021
- 2021-10-28 CN CN202122609120.XU patent/CN216081937U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220318 |