CN221033377U - Manhole door for steam jet vacuum pump - Google Patents
Manhole door for steam jet vacuum pump Download PDFInfo
- Publication number
- CN221033377U CN221033377U CN202322873211.3U CN202322873211U CN221033377U CN 221033377 U CN221033377 U CN 221033377U CN 202322873211 U CN202322873211 U CN 202322873211U CN 221033377 U CN221033377 U CN 221033377U
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- Prior art keywords
- throat
- vacuum pump
- connecting pipe
- arc
- shaped plate
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses a manhole door for a steam jet vacuum pump, which is arranged at a throat of a vacuum pump body, wherein the manhole door comprises a seamless steel pipe and a connecting pipe which are arranged in a centering way, the connecting pipe is connected with the throat in a welding way, one end of the seamless steel pipe is welded with an arc-shaped plate with the same diameter as that of a straight section of the throat, the other end of the seamless steel pipe is welded with a blind flange, the vacuum pump body is provided with a notch at the throat and is clamped with the arc-shaped plate through the notch, and the arc-shaped plate with the same diameter as that of the straight section of the throat is arranged after the blind flange and the connecting pipe flange are fixed, so that the arc-shaped plate can be just embedded into a pipeline of the straight section of the throat, the flow of steam air in the throat is not influenced, the vacuumizing effect is ensured, and the deposited dust of the vacuum pump can be cleaned conveniently.
Description
Technical Field
The utility model belongs to the technical field, and particularly relates to a manhole door for a steam jet vacuum pump.
Background
The steam jet vacuum pump is a place which is particularly easy to generate dust deposit at the throat part in the vacuumizing process, is very difficult to clean, has great influence on vacuumizing due to excessive dust deposit at the throat part, and finally causes no vacuumizing because the dust deposit at the throat part is not cleaned in the production process, so that the production condition is influenced.
In the prior art, a cleaning manhole door is not arranged at the throat of the vacuum pump generally, and even if the cleaning manhole door is arranged at some parts, the cleaning manhole door is arranged at the upper part or the lower part of the throat, so that the flow of the vacuumized airflow is greatly influenced, and dead angles exist and cannot be cleaned.
Accordingly, the present utility model provides a manhole door for a vapor jet vacuum pump to solve the problems set forth in the background art described above.
Disclosure of utility model
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The manhole door is arranged at the throat of the vacuum pump body; the manhole door comprises a seamless steel pipe and a connecting pipe which are arranged in a centering way, wherein one end of the seamless steel pipe is provided with an arc-shaped plate, and the other end of the seamless steel pipe is provided with a blind flange;
The throat is provided with a notch which is clamped with the arc-shaped plate;
one end of the connecting pipe is provided with a connecting pipe flange which is connected with the blind flange through bolts.
The further scheme is as follows: an O-shaped ring is arranged between the connecting pipe flange and the blind flange.
The further scheme is as follows: the connecting pipe flange is provided with a groove for installing an O-shaped ring.
The further scheme is as follows: the diameters of the arc-shaped plate and the throat straight section are the same.
The further scheme is as follows: the connecting pipe is welded with the throat.
Compared with the prior art, the utility model has the beneficial effects that:
The manhole door is additionally arranged at the throat, and the arc-shaped plate with the same diameter as the straight section of the throat is arranged, so that after the blind flange and the connecting pipe flange are fixed, the arc-shaped plate can be just embedded into a pipeline of the straight section of the throat, the flow of steam air flow in the throat is not influenced, the vacuumizing effect is ensured, and the dust deposit of the vacuum pump can be conveniently cleaned.
Drawings
The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is an overall schematic of a manhole door for a vapor jet vacuum pump;
Fig. 2 is a schematic view of a manhole door for a steam jet vacuum pump.
In the figure: 1. a vacuum pump body; 2. a manhole door; 11. a laryngeal opening; 21. a connecting pipe; 22. a blind flange; 23. a connecting pipe flange; 24. a seamless steel pipe; 25. an arc-shaped plate.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
Referring to fig. 1-2, in the embodiment of the utility model, a manhole door for a steam jet vacuum pump is arranged at a throat 11 of a vacuum pump body 1, a manhole door 2 is arranged at the throat 11 of the vacuum pump body 1, the manhole door 2 comprises a seamless steel pipe 24 and a connecting pipe 21 which are arranged in a centering manner, the connecting pipe 21 is welded and connected with the throat 11, one end of the seamless steel pipe 24 is welded with an arc-shaped plate 25 with the same diameter as the straight section of the throat 11, the other end of the seamless steel pipe 24 is welded with a blind flange 22, the blind flange and the connecting pipe are welded into a whole, and the blind flange is convenient to replace, and the vacuum pump body 1 is provided with a notch at the throat 11 and is clamped with the arc-shaped plate 25 through the notch.
Compared with the prior art, the manhole door 2 is additionally arranged at the throat 11, and the arc-shaped plate 25 with the same diameter as the straight section of the throat 11 is arranged, so that after the blind flange 22 and the connecting pipe flange 23 are fixed, the arc-shaped plate 25 can be just embedded into a pipeline of the straight section of the throat 11, the flow of steam in the throat is not influenced, the vacuumizing effect is ensured, and the accumulated ash of the vacuum pump can be conveniently cleaned.
Further, one end of the connecting pipe 21 is provided with a connecting pipe flange 23, the connecting pipe flange 23 is connected with the blind flange 22 through bolts, an O-shaped ring is further arranged between the connecting pipe flange 23 and the blind flange 22, a groove for installing the O-shaped ring is formed in the connecting pipe flange 23, and the O-shaped ring is inlaid in the groove of the connecting pipe flange 23, so that the manhole door 2 is effectively sealed.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The foregoing is merely illustrative of the structures of this utility model and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the utility model or from the scope of the utility model as defined in the accompanying claims.
Claims (5)
1. The utility model provides a steam jet vacuum pump is with aperture door, its throat (11) department of locating vacuum pump body (1), its characterized in that:
The manhole door (2) comprises a seamless steel pipe (24) and a connecting pipe (21) which are arranged in a centering way, one end of the seamless steel pipe (24) is provided with an arc-shaped plate (25), and the other end of the seamless steel pipe (24) is provided with a blind flange (22);
a notch is formed in the throat (11) and is clamped with the arc-shaped plate (25) through the notch;
One end of the connecting pipe (21) is provided with a connecting pipe flange (23), and the connecting pipe flange (23) is connected with the blind flange (22) through bolts.
2. A manhole door for a steam jet vacuum pump according to claim 1, characterized in that an O-ring is provided between the adapter flange (23) and the blind flange (22).
3. A door for a steam jet vacuum pump according to claim 2, characterized in that the adapter flange (23) is provided with a groove for mounting an O-ring.
4. A door for a steam jet vacuum pump according to claim 1, characterized in that the arc-shaped plate (25) has the same diameter as the straight section of the throat (11).
5. A door for a steam jet vacuum pump according to claim 1, characterized in that the connecting pipe (21) is welded to the throat (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322873211.3U CN221033377U (en) | 2023-10-25 | 2023-10-25 | Manhole door for steam jet vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322873211.3U CN221033377U (en) | 2023-10-25 | 2023-10-25 | Manhole door for steam jet vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221033377U true CN221033377U (en) | 2024-05-28 |
Family
ID=91140323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322873211.3U Active CN221033377U (en) | 2023-10-25 | 2023-10-25 | Manhole door for steam jet vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221033377U (en) |
-
2023
- 2023-10-25 CN CN202322873211.3U patent/CN221033377U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |