CN216975319U - Device for protecting external washing type machine pump - Google Patents
Device for protecting external washing type machine pump Download PDFInfo
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- CN216975319U CN216975319U CN202220360846.6U CN202220360846U CN216975319U CN 216975319 U CN216975319 U CN 216975319U CN 202220360846 U CN202220360846 U CN 202220360846U CN 216975319 U CN216975319 U CN 216975319U
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Abstract
A device for protecting an external washing type machine pump is characterized by comprising a blade cavity 5, wherein the inside of the blade cavity is of a cavity structure, a rotor 3 and a support shaft 4 are arranged in the blade cavity, and a fluid inlet 51 and a fluid outlet 52 are respectively arranged at two ends of the blade cavity; the rotor 3 consists of blades 2 and a rotating shaft 31; the blades are uniformly and fixedly connected to the outer cylindrical surface of the sleeve-shaped rotating shaft, the rotating shaft is sleeved outside the supporting shaft and is rotatably connected through a bearing, and two ends of the supporting shaft are fixedly arranged on the blade cavity shell and are perpendicular to the flowing direction of the conveyed medium fluid; the fluid pipeline 1 for conveying medium of the pump is hermetically connected and communicated with the fluid inlet 51; the fluid outlet 52 is connected with the inlet of the mechanical pump sealing cavity in a sealing way through a pipeline and is communicated with the mechanical pump sealing cavity; and a transparent peeping window is arranged on the blade cavity shell. The structure of the utility model can monitor and accurately judge whether the external washing liquid is injected into the sealed cavity of the centrifugal pump, thereby playing a role of protecting the centrifugal pump.
Description
Technical Field
The utility model relates to the technical field of petrochemical engineering heat exchangers, and provides a device for protecting an external washing type machine pump. In the petrochemical production process, the application of the pump is very common, however, when the pump with an external flushing type is used, the pump is often damaged due to dry friction because flushing oil is not injected into the pump.
Background
In the petrochemical production process, the machine pump is one of the indispensable equipment, some machine pumps need outer flushing oil, utilize the outer flushing liquid medium of external transport of pump to squeeze into the seal chamber through the aperture on the end face seal gland, mix with medium in the pump, be called outer washing, can use the pump of outer washing, the medium of carrying is generally lower (< 80 ℃), the medium is cleaner, generally all is light oil or solvent, to the high flush fluid of temperature, can add the cooler, get into sealed face after the cooling, get into sealed face after can adding the filter to remove the granule to the liquid that contains the granule. The external washing action is generally four: the first is a flushing function, and impurities between the friction of the movable ring and the static ring are flushed; the second is lubrication, which keeps a layer of liquid film between the sealing end faces to play a role of lubrication; the third is the cooling effect, takes away the heat that the rotating ring produced because of the friction with quiet ring at the during operation, reduces sealing element's temperature, prolongs sealed life, and the fourth is sealing effect, thereby prevents that the outer air of pump from leaking into the pump and playing sealing effect. In actual operation, when an external flushing pipeline is blocked or other faults occur, the mechanical pump is damaged due to the fact that whether external flushing oil smoothly enters a mechanical pump sealing cavity cannot be judged in time.
The machine pump that a certain petrochemical company carbon five separation device solvent (dimethylformamide) system used all has the external washing centrifugal pump, and the external washing liquid is refined or fresh solvent (dimethylformamide), utilizes the pipeline to directly pour into each centrifugal pump seal chamber with the solvent, and in the operation process, because external washing liquid conveying line blocks up, the machine pump does not have external washing liquid for a long time and leads to the machine pump dry friction and damage, not only influences the normal operating of device, and serious environmental pollution moreover. Therefore, it is urgently needed to solve!
SUMMERY OF THE UTILITY MODEL
The utility model provides a device for protecting an external washing type centrifugal pump, and aims to solve the technical problem of monitoring and judging whether external washing oil smoothly enters a mechanical pump sealing cavity in time, so that the risk of damage of the external washing type centrifugal pump is reduced, and the surrounding environment and the production safety are improved.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a device for protecting an external washing type machine pump is characterized by comprising a blade cavity 5, wherein the inside of the blade cavity is of a cavity structure, a rotor 3 and a support shaft 4 are arranged in the blade cavity, and a fluid inlet 51 and a fluid outlet 52 are respectively arranged at two ends of the blade cavity; the rotor 3 consists of blades 2 and a rotating shaft 31; the blades are uniformly and fixedly connected to the outer cylindrical surface of the sleeve-shaped rotating shaft, the rotating shaft is sleeved outside the supporting shaft and is rotatably connected through a bearing, and two ends of the supporting shaft are fixedly arranged on the blade cavity shell and are perpendicular to the flowing direction of the conveyed medium fluid; the fluid pipeline 1 for conveying medium of the pump is hermetically connected and communicated with the fluid inlet 51; the fluid outlet 52 is connected with the inlet of the mechanical pump sealing cavity in a sealing way through a pipeline and is communicated with the mechanical pump sealing cavity; and a transparent peeping window is arranged on the blade cavity shell.
The device for protecting the external washing type pump is characterized in that the axial line of the supporting shaft 4 is arranged on the upper side of the central axis of the medium conveying fluid pipeline and is vertical to the central axis.
The device for protecting the external washing type pump is characterized in that the conveying medium fluid pipeline 1 is connected with the fluid inlet 51 in a welding mode.
The device for protecting the external washing type pump is characterized in that the cavity of the blade cavity is a circular arc cavity surrounding the blade.
The device for protecting the external washing type pump is characterized in that the cavity of the blade cavity is a cylindrical inner cavity, the shell of the blade cavity is a cylindrical shell, the two cylindrical ends of the blade cavity are provided with the fluid inlet 51 and the fluid outlet 52, and the cylindrical shell is provided with the toughened transparent glass peep window 6.
The device for protecting the external washing type pump is characterized in that the blade and the washing liquid are different in color.
The device for protecting the external washing type pump is characterized in that the bearing is a rolling bearing.
The medium conveying fluid pipeline is a channel for the external washing liquid to enter the sealing cavity of the pump; the blades obtain external energy to rotate; the rotor bears the rotating force of the fluid to all the working blades; the supporting shaft is used for supporting the rotor to rotate; the blade cavity is the place where the blade rotates. The blade colour choose for use with the flush fluid inconsistent, should not choose for use the black, whether be in the rotation because the black blade is unfavorable for judging the blade.
The utility model has the beneficial effects that: the utility model has simple and practical structure and simple manufacture; when the external washing liquid enters the blade cavity through the medium conveying fluid pipeline, the blades are pushed to rotate under the action of fluid kinetic energy, and once the external washing liquid is interrupted, the blades stop rotating, so that the external washing liquid can be judged not to be injected into the sealed cavity of the centrifugal pump, a technician can maintain the external washing liquid at once, and the effect of protecting the centrifugal pump is achieved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the connection position of the present invention with a fluid pipeline and a pump for conveying media;
fig. 3 is a schematic cross-sectional view of the N-N position of fig. 1.
Fig. 4 is a schematic cross-sectional view of a transparent glass viewing window.
Wherein: the device comprises a fluid pipeline 1 for conveying media, blades 2, a rotor 3, a rotating shaft 31, a supporting shaft 4, a blade cavity 5, a fluid inlet 51, a fluid outlet 52 and a (transparent glass) sight window 6.
Detailed Description
The following detailed description of the embodiments of the present invention is provided, but the present invention is not limited to the following description.
Referring to fig. 1 and 3, the device for protecting an external washing type machine pump of the present invention comprises a blade cavity 5, wherein the blade cavity is of a cavity structure, a rotor 3 and a support shaft 4 are arranged in the blade cavity, and a fluid inlet 51 and a fluid outlet 52 are respectively arranged at two ends of the blade cavity; referring to fig. 3, the rotor 3 is composed of blades 2 and a rotating shaft 31; the blades are uniformly and fixedly connected to the outer cylindrical surface of the sleeve-shaped rotating shaft, the rotating shaft is sleeved outside the supporting shaft and is rotatably connected through a rolling bearing, and two ends of the supporting shaft are fixedly arranged on the blade cavity shell and are perpendicular to the flowing direction of the conveyed medium fluid; referring to fig. 2, the fluid pipeline 1 for conveying medium of the pump is connected and communicated with the fluid inlet 51 in a sealing way; the fluid outlet 52 is connected with the inlet of the mechanical pump sealing cavity in a sealing way through a pipeline and is communicated with the mechanical pump sealing cavity; and a transparent peeping window is arranged on the blade cavity shell.
Referring to fig. 1, the axial lines of the support shafts 4 are arranged at positions above the central axis of the medium conveying fluid pipeline and are perpendicular to each other.
The medium conveying fluid pipeline 1 is connected with the fluid inlet 51 in a welding mode.
The blade cavity is a circular arc cavity surrounding the blade.
Referring to fig. 3 and 4, preferably, the blade cavity is a cylindrical inner cavity, the outer shell of the blade cavity is a cylindrical shell, the two cylindrical ends of the blade cavity are provided with the fluid inlet 51 and the fluid outlet 52, and the cylindrical shell is provided with the tempered transparent glass peeping window 6.
The blade and the flushing liquid are in different colors.
The working principle of the utility model is as follows:
the utility model mainly comprises that flushing fluid medium enters a blade cavity 5 from a medium conveying fluid pipeline 1, after a blade 2 obtains capacity, the blade rotates to drive a rotor 3 to rotate, in order to better facilitate an operator to observe the rotation condition of the blade, the color of the blade is different from the color of the medium, if the problems of pipeline blockage failure or small pressure and the like occur, the blade cannot rotate, at the moment, the operator immediately finds that the flushing fluid medium does not enter a centrifugal pump sealing cavity, and then the centrifugal pump is shut down, thereby achieving the purpose of protecting the centrifugal pump.
The embodiment of the utility model is as follows:
(1) conveying medium fluid pipeline: selecting materials and pipe diameters according to the physical properties, flow rate, pressure and the like of the medium;
(2) a blade: the blade pattern can adopt three blades or six blades, the color is different from the color of the medium, and the material is polytetrafluoroethylene;
(3) a rotor: stainless steel materials are adopted, and a rolling bearing is adopted between the stainless steel materials and the supporting shaft;
(4) supporting a shaft: stainless steel is adopted, and a rolling bearing is adopted between the rotor and the stainless steel;
(5) a blade cavity: the cylindrical shell is made of stainless steel, and the peeping window on the cylindrical shell is made of transparent toughened glass.
The utility model is illustrated below with reference to specific examples:
example 1:
the device for protecting the external washing type pump is applied to the pump of a carbon five separation device solvent (dimethyl formamide) system, and has the structure as described above, and the implementation scheme is as follows:
(1) conveying medium fluid pipeline: the material is 304 stainless steel, and the pipe diameter is 40 mm;
(2) a blade: the leaf type adopts six leaves, the color is red, and the material is polytetrafluoroethylene;
(3) a rotor: the stainless steel is cylindrical, a rolling bearing is arranged between the stainless steel and the supporting shaft, the diameter is 10mm, and the length is 20 mm;
(4) supporting a shaft: the blade cavity is fixedly connected with the blade cavity in an embedded manner by adopting a stainless steel material;
(5) a blade cavity: the shape is a cylinder made of stainless steel, the peeping window on the cylinder is made of transparent toughened glass, and the sealing material of the peeping window is polytetrafluoroethylene, the diameter of the peeping window is 50mm, and the length of the peeping window is 50 mm.
After the scheme is implemented, the solvent system washes the centrifugal pump outside for 24 months, and the centrifugal pump is not damaged due to lack of washing oil.
Comparative example 1:
the conventional external washing centrifugal pump directly injects washing oil into the seal chamber through a pipe.
After 2 months of implementation, the external washing centrifugal pump does not timely judge whether the washing oil is smoothly injected into the sealing cavity due to the blockage of the washing oil pipeline, and the leakage condition of the mechanical pump sealing system is caused by 8 hours of dry friction.
From the above results, it can be seen that: when the utility model is adopted, an operator can easily monitor and judge whether the flushing oil is injected into the sealing cavity of the centrifugal pump, so that the risk of damage of the centrifugal pump due to dry friction can be reduced.
The above examples are only for illustrating the technical concept and features of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. A device for protecting an external washing type machine pump is characterized by comprising a blade cavity (5), wherein the inside of the blade cavity is of a cavity structure, a rotor (3) and a support shaft (4) are arranged in the blade cavity, and a fluid inlet (51) and a fluid outlet (52) are respectively arranged at two ends of the blade cavity; the rotor (3) consists of blades (2) and a rotating shaft (31); the blades are uniformly and fixedly connected to the outer cylindrical surface of the sleeve-shaped rotating shaft, the rotating shaft is sleeved outside the supporting shaft and is rotatably connected through a bearing, and two ends of the supporting shaft are fixedly arranged on the blade cavity shell and are perpendicular to the flowing direction of the conveyed medium fluid; a medium conveying fluid pipeline (1) of the pump is hermetically connected and communicated with the fluid inlet (51); the fluid outlet (52) is connected with the inlet of the mechanical pump sealing cavity in a sealing way through a pipeline and is communicated with the mechanical pump sealing cavity; a transparent peep window (6) is arranged on the blade cavity shell.
2. A device for protecting an external washer pump according to claim 1, characterized in that the axes of said support shafts (4) are arranged at a position offset from the central axis of said medium-conveying fluid conduit and perpendicular to each other.
3. A device to protect external flush type pumps according to claim 1, characterized in that said delivery medium fluid conduit (1) is welded to said fluid inlet (51).
4. The apparatus of claim 1 wherein said vane chamber cavity is a circular arc shaped cavity surrounding the vane.
5. The device for protecting external washing type pump according to claim 4, wherein the blade cavity is a cylindrical inner cavity, the outer shell is a cylindrical shell, the fluid inlet (51) and the fluid outlet (52) are arranged at two cylindrical ends, and a toughened transparent glass peep window (6) is arranged on the cylindrical shell.
6. The apparatus of claim 1 wherein said vanes are of a different color from the irrigation fluid.
7. A device for protecting an external washer-type pump as claimed in claim 1 wherein said bearing is a rolling bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220360846.6U CN216975319U (en) | 2022-02-22 | 2022-02-22 | Device for protecting external washing type machine pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220360846.6U CN216975319U (en) | 2022-02-22 | 2022-02-22 | Device for protecting external washing type machine pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216975319U true CN216975319U (en) | 2022-07-15 |
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ID=82354618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220360846.6U Active CN216975319U (en) | 2022-02-22 | 2022-02-22 | Device for protecting external washing type machine pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216975319U (en) |
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2022
- 2022-02-22 CN CN202220360846.6U patent/CN216975319U/en active Active
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