CN213392631U - Self-centering piston rod - Google Patents
Self-centering piston rod Download PDFInfo
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- CN213392631U CN213392631U CN202021873672.0U CN202021873672U CN213392631U CN 213392631 U CN213392631 U CN 213392631U CN 202021873672 U CN202021873672 U CN 202021873672U CN 213392631 U CN213392631 U CN 213392631U
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- piston rod
- section
- piston
- taper
- centering
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- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model relates to a from centering piston rod belongs to slush pump technical field. The piston rod assembly structure comprises a piston rod front section and a piston rod rear section, wherein the piston rod front section and the piston rod rear section are in threaded connection, a taper combination is arranged at a joint closing position, a piston assembly section is arranged on the piston rod rear section, the tail section of the piston assembly section is provided with a taper, and a locking nut installation section is arranged on a piston rod on the right side of the piston assembly section; the utility model discloses removable assecmbly, convenient maintenance is changed, anterior segment and back end and with the piston between adopt taper fit to realize from feeling relieved, linking department leakproofness is better, has improved the life of piston.
Description
Technical Field
The utility model relates to a slush pump technical field especially relates to a from centering piston rod.
Background
The piston assembly is one of the main parts of the hydraulic end system of the slurry pump, and the suction and discharge pressure of the slurry pump is generated by the linear reciprocating motion of the piston in the cylinder sleeve.
The existing piston assembly mainly comprises a piston rod, a sealing ring, a piston and a locking nut, and the piston rod are generally in straight hole transition fit. Because the hole cooperation undersize can install inconveniently between piston and the piston rod, so for convenient installation, can have the clearance between the assembly hole, realize end face seal through the sealing washer during the assembly.
The slurry pump works in a very complicated and severe field environment, so that the piston is very easy to wear and needs to be replaced frequently, and the replacement can be carried out only by completely withdrawing the piston rod from the cylinder sleeve. And limited by the installation space of the slurry pump, the piston rods are integrally processed, so that the piston is extremely inconvenient to replace, and even the cylinder sleeve outside the piston needs to be detached to replace, thereby wasting time and labor. And after the piston works for a long time, the limit deviation can be caused between the piston and the piston rod due to the inner hole clearance, the piston is worn eccentrically and damaged quickly, and the replaced piston cannot be accurately centered with the piston rod.
SUMMERY OF THE UTILITY MODEL
To defect and not enough problem among the prior art, the utility model provides a from centering piston rod, removable assecmbly makes things convenient for the maintenance to change, anterior segment and back end and with the piston between adopt taper fit to realize from centering, link up the leakproofness of department better, improved the life of piston.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a from centering piston rod, includes piston rod anterior segment and piston rod back end, adopt threaded connection and link up closed department and be equipped with the tapering combination between piston rod anterior segment and the piston rod back end, be equipped with the piston assembly section on the piston rod back end, the end of piston assembly section is equipped with the tapering, be equipped with lock nut installation section on the right side piston rod of piston assembly section.
Furthermore, a taper unthreaded hole is formed in the center port of the front section of the piston rod and extends inwards to form a threaded hole.
Furthermore, a corresponding screw and a taper polish rod are arranged at the assembly position of the rear section of the piston rod and the front section of the piston rod.
Furthermore, the front section of the piston assembling section is a horizontal section.
Furthermore, the whole section of the piston assembling section is a cone.
Furthermore, the taper is 2-10 degrees.
The utility model discloses following beneficial effect has: the utility model discloses the piston rod adopts and to dismantle the connection, makes things convenient for change the piston in the narrow and small space of slush pump job site, piston rod anterior segment and back end and with the piston between the assembly adopt taper fit, can realize from the centering, the leakproofness is good, need not to increase sealed the pad between piston and piston rod, and can not appear because the hole clearance causes the limit deviation, lead to the piston eccentric wear and fragile.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the front section of the piston rod of the present invention;
FIG. 3 is a rear view of the piston rod of the present invention;
fig. 4 is a schematic view of the whole section of the piston assembling section of the present invention being a cone structure.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, a self-centering piston rod comprises a piston rod front section 1 and a piston rod rear section 2, wherein the piston rod front section 1 and the piston rod rear section 2 are in threaded connection and are connected with each other to form a closed position to form taper combination, a piston assembling section 21 is arranged on the piston rod rear section 2, a tail section 211 of the piston assembling section 21 is provided with taper, and a locking nut mounting section 22 is arranged on the piston rod on the right side of the piston assembling section 21.
As shown in fig. 2, a central port of the front section 1 of the piston rod is provided with a taper unthreaded hole 11, and the taper unthreaded hole 11 extends inwards to form a threaded hole 12.
As shown in fig. 3, a screw 23 and a taper polish rod 24 are respectively arranged at the assembly position of the piston rod rear section 2 and the piston rod front section 1.
As shown in fig. 1, the front section 212 of the piston assembling section 21 is a horizontal section.
As shown in fig. 4, the entire section of the piston assembling section 21 is a cone.
The utility model discloses the piston rod adopts and to dismantle the connection, makes things convenient for change the piston in the narrow and small space of slush pump job site, piston rod anterior segment and back end and with the piston between the assembly adopt taper fit, can realize from the centering, the leakproofness is good, need not to increase sealed the pad between piston and piston rod, and can not appear because the hole clearance causes the limit deviation, lead to the piston eccentric wear and fragile.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. The present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only for illustrating the principle of the present invention, and the present invention will have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements all fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A self-centering piston rod, characterized by: the piston rod assembly structure comprises a piston rod front section and a piston rod rear section, wherein the piston rod front section and the piston rod rear section are in threaded connection, a closed joint is connected to form a taper combination, a piston assembly section is arranged on the piston rod rear section, the tail section of the piston assembly section is provided with a taper, and a locking nut installation section is arranged on the piston rod on the right side of the piston assembly section.
2. A self-centering piston rod according to claim 1, characterized in that: and a taper unthreaded hole is formed in the center port of the front section of the piston rod and extends inwards to form a threaded hole.
3. A self-centering piston rod according to claim 1, characterized in that: and a corresponding screw rod and a taper polish rod are arranged at the assembly position of the rear section of the piston rod and the front section of the piston rod.
4. A self-centering piston rod according to claim 1, characterized in that: the front section of the piston assembling section is a horizontal section.
5. A self-centering piston rod according to claim 1, characterized in that: the whole section of the piston assembling section is a cone.
6. A self-centering piston rod according to any one of claims 1 to 5, characterized in that: the taper is 2-10 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021873672.0U CN213392631U (en) | 2020-09-01 | 2020-09-01 | Self-centering piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021873672.0U CN213392631U (en) | 2020-09-01 | 2020-09-01 | Self-centering piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213392631U true CN213392631U (en) | 2021-06-08 |
Family
ID=76213068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021873672.0U Active CN213392631U (en) | 2020-09-01 | 2020-09-01 | Self-centering piston rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213392631U (en) |
-
2020
- 2020-09-01 CN CN202021873672.0U patent/CN213392631U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A self centering piston rod Effective date of registration: 20230925 Granted publication date: 20210608 Pledgee: Agricultural Bank of China Limited by Share Ltd. Chizhou branch Pledgor: ANHUI JULI OIL DRILLING EQUIPMENT TECHNOLOGY Co.,Ltd. Registration number: Y2023980058513 |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 28 Tangxi Road, Guichi District, Chizhou City, Anhui Province, 247100 Patentee after: ANHUI JULI OIL DRILLING EQUIPMENT TECHNOLOGY Co.,Ltd. Address before: 247100 No.17 workshop, new material industrial park, Jiangnan industrial concentration zone, Chizhou City, Anhui Province Patentee before: ANHUI JULI OIL DRILLING EQUIPMENT TECHNOLOGY Co.,Ltd. |