CN218439875U - Packing structure suitable for pressure change working condition of sealing medium - Google Patents
Packing structure suitable for pressure change working condition of sealing medium Download PDFInfo
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- CN218439875U CN218439875U CN202222861739.4U CN202222861739U CN218439875U CN 218439875 U CN218439875 U CN 218439875U CN 202222861739 U CN202222861739 U CN 202222861739U CN 218439875 U CN218439875 U CN 218439875U
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Abstract
The utility model relates to a packing structure suitable for sealing medium pressure changes operating mode, include: the throttling sleeve, the pressure relief pipe, the throttle valve, the packing ring and the shaft sleeve are arranged on the shaft sleeve; the pressure relief pipe is positioned between the throttle valve and the packing ring, the packing ring is sleeved on the shaft sleeve, and the packing ring is positioned between the packing and the throttle sleeve; the throttling sleeve and the shaft sleeve are positioned between the pump body and the pump shaft, the shaft sleeve is sleeved on the pump shaft, and the throttling sleeve is sleeved on the shaft sleeve. The utility model adopts the built-in packing ring, and adds the pressure regulating parts such as a throttling sleeve, a pressure relief pipe, a throttle valve and the like on the basis of the conventional packing structure; the pressure of the packing seal cavity can be adjusted by adjusting the opening of the throttle valve, so that the packing seal cavity is kept in a relatively stable pressure interval, and the reliability of packing seal and the safe and stable operation of the water pump are ensured.
Description
Technical Field
The utility model relates to a packing structure, concretely relates to increased pressure regulating parts such as throttle cover, pressure release pipe, choke valve on conventional packing structure's basis, guaranteed the packing reliability and the stable operation's of water pump packing seal's packing structure who is applicable to the sealing medium pressure change operating mode.
Background
At present, in a pump adopting packing seal, the number of packing is designed according to the pressure of a sealing medium in the pump, and meanwhile, the pressure of the sealing medium in the pump cannot be greatly distinguished in the whole operation process of the pump; if one pump is different in required working condition, the pressure of sealing medium in the pump can be in a high-pressure operation period or a low-pressure operation period; in a high-pressure operation period, the number of fillers which are designed and installed in the pump is not enough, so that the sealing leakage amount is increased, the operation field environment of the pump is polluted, even water enters a bearing box, and the safe operation of the bearing is endangered; during the low-pressure operation period, the packing on the inner side and the outer side of the packing cavity is not lubricated and cooled by enough leakage media due to the excessive number of the packing, so that the packing is dry-ground or even burnt, and the safe and stable operation of the whole pump set is influenced. In order to meet the operation requirement of the large-span variable-pressure working condition of the packing seal pump and ensure the safe and stable operation of the pump set, the design of the novel packing seal structure has important significance.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a packing structure suitable for the pressure change condition of the sealing medium, which has increased the pressure regulating parts such as the throttle sleeve, the pressure relief pipe, the throttle valve, etc. on the basis of the conventional packing structure, and has ensured the reliability of the packing and the safe and stable operation of the water pump.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: a packing structure suitable for sealing medium pressure change working conditions comprises: throttle sleeve, pressure release pipe, choke valve, filler ring, axle sleeve.
The pressure relief pipe is located between the throttling valve and the packing ring, the packing ring is sleeved on the shaft sleeve, and the packing ring is located between the packing and the throttling sleeve.
The throttling sleeve and the shaft sleeve are positioned between the pump body and the pump shaft, the shaft sleeve is sleeved on the pump shaft, and the throttling sleeve is sleeved on the shaft sleeve.
In the practical implementation example of the utility model, the inner diameter of the throttling sleeve is provided with a spiral groove; the number of the spiral grooves is 10-20.
In an embodiment of the present invention, the depth of the spiral groove ranges from 1 to 2mm.
In an embodiment of the present invention, the spiral groove is a left-handed or right-handed spiral groove.
In the concrete implementation example of the utility model, the one side that is close to the throttle sleeve in the filler ring sets up the drainage notch, and the one side that is close to the filler is provided with the throttle slot, and the centre is provided with the wash port.
In the embodiment of the present invention, the depth of the throttling groove ranges from 1 mm to 2mm.
In the practical embodiment of the utility model, the length range of the filler cavity for installing the filler is 2-5 times of the thickness of the filler ring.
In an embodiment of the present invention, the pressure relief pipe is a pipe formed by connecting a plurality of pipes.
In the embodiment of the present invention, the throttle valve is provided with a throttle valve seat.
The utility model discloses an actively advance the effect and lie in: the utility model provides a packing structure suitable for sealing medium pressure changes operating mode has following advantage: the utility model discloses a pump packing structure which can be suitable for the pressure change of a sealing medium, the structure adopts a built-in packing ring, and pressure regulating parts such as a throttling sleeve, a pressure relief pipe and a throttle valve are added on the basis of a conventional packing structure; the pressure of the packing seal cavity can be adjusted by adjusting the opening of the throttle valve, so that the packing seal cavity is kept in a relatively stable pressure interval, and the reliability of packing seal and the safe and stable operation of the water pump are ensured.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged view of the portion of the packing ring and the choke sleeve of fig. 1.
Fig. 3 is a schematic view of the construction of the throttle sleeve.
Fig. 4-1 is a schematic view of the packing ring structure.
Fig. 4-2base:Sub>A-base:Sub>A cross-sectional view of fig. 4-1.
The utility model discloses the name that well reference numeral corresponds:
in the figure: the pump comprises a throttling sleeve 1, a pressure relief pipe 2, a throttle valve 3, a packing ring 4, a shaft sleeve 5, a pump shaft 6, a pump body 7 and packing 8; drain slot 401, throttling groove 402, drain hole 403.
Detailed Description
The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.
Fig. 1 is a schematic view of the overall structure of the present invention. Fig. 2 is an enlarged view of the portion of the packing ring and the choke sleeve of fig. 1. As shown in fig. 1-2: the utility model provides a packing structure suitable for sealing medium pressure changes operating mode, include: the throttle sleeve 1, the pressure release pipe 2, the throttle valve 3, the packing ring 4, the axle sleeve 5.
The pressure relief pipe 2 is positioned between the throttle valve 3 and the packing ring 4, the packing ring 4 is sleeved on the shaft sleeve 5, and the packing ring 4 is positioned between the packing 8 and the throttling sleeve 1.
The throttling sleeve 1 and the shaft sleeve 5 are positioned between the pump body 7 and the pump shaft 6, the shaft sleeve 5 is sleeved on the pump shaft 6, and the throttling sleeve 1 is sleeved on the shaft sleeve 5.
In the specific implementation process, the inner diameter of the throttling sleeve 1 of the utility model is provided with a spiral groove; the number of the spiral grooves is 10-20. The depth range of the spiral groove is as follows: 1-2mm. The spiral groove is a left-handed or right-handed spiral groove.
A drainage notch 401 is arranged at one side of the packing ring 4 close to the throttling sleeve 1, a throttling groove 402 is arranged at one side close to the packing, and a drainage hole 403 is arranged in the middle; the depth of the throttling groove 402 ranges from 1 to 2mm. In a specific implementation process, the above parameters may be adjusted according to specific requirements.
The length of the packing cavity in which the packing 8 is installed ranges from 2 to 5 times the thickness of the packing ring 4.
The pressure relief pipe 2 is a pipe formed by connecting a plurality of pipes, and the pressure relief pipe 2 shown in fig. 1 is formed by combining a straight pipe and an elbow pipe, and the middle part is a pipe joint.
In the concrete implementation process, the utility model provides a choke valve 3 generally can be furnished with the cover and have the throttle valve seat, does not show in figure 1.
The structure provided by the utility model comprises a throttling sleeve, wherein the inner diameter of the throttling sleeve is provided with a spiral groove, a pressure relief pipe and a throttling valve; when the pump shaft rotates clockwise from left to right, the inner diameter groove of the throttling sleeve rotates leftwards (or rightwards), the groove plays a role of pressure reduction and throttling in the running process of the pump, a part of medium under pressure passing through the throttling sleeve enters the packing sealing cavity and flows outwards along with the pressure relief pipe, and a part of medium under pressure permeates into the packing and is discharged after lubricating and cooling the packing.
When the pressure of the sealed medium is lower, the throttle valve is closed, even the throttle valve is closed, the medium external discharge capacity passing through the pressure relief pipe is reduced, at the moment, the medium flow passing through the throttle sleeve is reduced, and because the gap between the throttle sleeve and the shaft sleeve is not changed (namely the leakage flow area is not changed), the flow speed of the leaked medium passing through the throttle sleeve is reduced, the pressure drop is reduced, the medium pressure in the packing sealing cavity is ensured, namely the medium quantity playing a role in lubricating and cooling the packing is ensured; the filler outside the filler cavity can not be lubricated and cooled due to no leakage medium, so that the filler is not burnt out due to dry grinding.
On the contrary, when the pressure of the sealed medium is higher, the throttle valve is opened, the medium external discharge capacity passing through the pressure relief pipe is increased, the medium flow passing through the throttling sleeve is increased, the medium leakage pressure drop passing through the throttling sleeve is increased, the medium pressure in the packing sealing cavity is reduced, and the leakage amount of the packing seal is in a normal and controllable range, so that the safe and stable operation of the pump set is ensured.
Make through above design the utility model has the advantages of simple and practical, maneuverability is strong, reached the operation requirement that the packing is sealed to be applicable to the different operating modes of high-low pressure, improved the practicality of packing.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides a packing structure suitable for sealing medium pressure changes operating mode which characterized in that: the packing structure suitable for the pressure change working condition of the sealing medium comprises: the throttling sleeve, the pressure relief pipe, the throttle valve, the packing ring and the shaft sleeve are arranged on the shaft sleeve;
the pressure relief pipe is positioned between the throttle valve and the packing ring, the packing ring is sleeved on the shaft sleeve, and the packing ring is positioned between the packing and the throttle sleeve;
the throttling sleeve and the shaft sleeve are positioned between the pump body and the pump shaft, the shaft sleeve is sleeved on the pump shaft, and the throttling sleeve is sleeved on the shaft sleeve.
2. The packing structure suitable for sealing medium pressure change working condition according to claim 1, characterized in that: the inner diameter of the throttling sleeve is provided with a spiral groove; the number of the spiral grooves is 10-20.
3. The packing structure suitable for sealing medium pressure change working condition according to claim 2, characterized in that: the depth of the spiral groove ranges from 1 mm to 2mm.
4. A packing structure adapted for sealing medium pressure change working condition according to claim 2 or 3, characterized in that: the spiral groove is a left-handed or right-handed spiral groove.
5. The packing structure suitable for sealing medium pressure change working conditions according to claim 1, characterized in that: one side of the filler ring close to the throttling sleeve is provided with a drainage notch, one side close to the filler is provided with a throttling groove, and the middle of the filler ring is provided with a drainage hole.
6. The packing structure suitable for sealing medium pressure change working condition according to claim 5, characterized in that: the depth of the throttling groove ranges from 1 mm to 2mm.
7. The packing structure suitable for sealing medium pressure change working condition according to claim 1, characterized in that: the length of the packing cavity for installing the packing is 2-5 times of the thickness of the packing ring.
8. The packing structure suitable for sealing medium pressure change working conditions according to claim 1, characterized in that: the pressure relief pipe is a pipeline formed by connecting a plurality of pipelines.
9. The packing structure suitable for sealing medium pressure change working condition according to claim 1, characterized in that: the throttle valve is matched with a throttle valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222861739.4U CN218439875U (en) | 2022-10-28 | 2022-10-28 | Packing structure suitable for pressure change working condition of sealing medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222861739.4U CN218439875U (en) | 2022-10-28 | 2022-10-28 | Packing structure suitable for pressure change working condition of sealing medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218439875U true CN218439875U (en) | 2023-02-03 |
Family
ID=85072786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222861739.4U Active CN218439875U (en) | 2022-10-28 | 2022-10-28 | Packing structure suitable for pressure change working condition of sealing medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218439875U (en) |
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2022
- 2022-10-28 CN CN202222861739.4U patent/CN218439875U/en active Active
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