CN215444372U - High-pressure drilling pump piston - Google Patents
High-pressure drilling pump piston Download PDFInfo
- Publication number
- CN215444372U CN215444372U CN202121235739.2U CN202121235739U CN215444372U CN 215444372 U CN215444372 U CN 215444372U CN 202121235739 U CN202121235739 U CN 202121235739U CN 215444372 U CN215444372 U CN 215444372U
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- ring
- leather cup
- core
- core body
- outer sleeve
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Abstract
The utility model relates to the field of accessories for pumps, in particular to a high-pressure drilling pump piston. The improved leather cup comprises a core body, a ring groove is formed in the outer edge of the upper side of the core body, a leather cup is arranged in the ring groove in a sleeved mode, an outer sleeve is arranged on the core body above the leather cup in a sleeved mode, a top ring is arranged on the upper end of the core body in a sleeved mode, the inner edge of the top ring is fixedly and hermetically connected with the outer edge of the core body, the outer edge of the top ring is fixedly and hermetically connected with the inner edge of the outer sleeve, the lower end of the outer sleeve is in sealed contact with the upper end of the leather cup, a plurality of through holes are formed in the top ring, a pressing ring is arranged on the core body in the outer sleeve in a sleeved mode, the inner edge of the pressing ring is slidably and hermetically connected with the outer edge of the core body, the outer edge of the pressing ring is slidably and hermetically connected with the inner edge of the outer sleeve, the pressing ring is located below the top ring, a conical ring is fixed at the lower end of the pressing ring, and the lower end of the conical ring is inserted into an annular conical groove in the upper end of the leather cup. The utility model has simple structure, can improve the pressure between the leather cup and the cylinder sleeve, can increase the sealing performance between the leather cup and the cylinder sleeve, can prevent high-pressure slurry from puncturing the leather cup, and can prolong the service life of the leather cup.
Description
Technical Field
The utility model relates to the field of accessories for pumps, in particular to a high-pressure drilling pump piston.
Background
At present, pistons on a drilling pump are divided into rubber and polyurethane according to main materials. The rubber piston is mainly completed by tightly matching a high wear-resistant lip on a leather cup in a cylinder sleeve. The existing piston is provided with the groove, so that high-pressure slurry enters the groove, the cup lip tightly supports the cylinder sleeve, however, the cup is soft, and after long-time use, the high-pressure slurry easily pierces the cup, so that the sealing of the cup and the cylinder sleeve is disabled.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing the high-pressure drilling pump piston which is simple in structure, can improve the pressure of a leather cup and a cylinder sleeve, can improve the sealing performance of the leather cup and the cylinder sleeve, can prevent high-pressure slurry from puncturing the leather cup and can prolong the service life of the piston.
In order to achieve the purpose, the utility model provides the technical scheme that:
a piston of a high-pressure drilling pump comprises a core body, wherein an annular groove is formed in the outer edge of the upper side of the core body, a leather cup is sleeved in the annular groove, a plurality of vertical fixing columns are fixed on the bottom of the annular groove, blind holes concentric with the fixing columns are formed in the lower end of the leather cup, the fixing columns are inserted in the blind holes, an outer sleeve is sleeved on the core body above the leather cup, a top ring is sleeved on the upper end of the core body, the inner edge of the top ring is fixedly and hermetically connected with the outer edge of the core body, the outer edge of the top ring is fixedly and hermetically connected with the inner edge of the outer sleeve, the lower end of the outer sleeve is in sealing contact with the upper end of the leather cup, a plurality of through holes are formed in the top ring, a compression ring is sleeved on the core body in the outer sleeve, the inner edge of the compression ring is in sliding and hermetically connected with the outer edge of the outer sleeve, the compression ring is located below the top ring, a conical ring is fixed at the lower end of the compression ring and is inserted in an annular conical groove at the upper end of the leather cup.
Specifically, a plurality of seal grooves are formed in the inner edge and the outer edge of the pressing ring, seal rings are installed in the seal grooves, and the pressing ring is connected with the core body and the outer sleeve in a sealing mode through the seal rings.
Specifically, a plurality of vertical fixed columns are uniformly distributed according to the circumference of the axis of the core body.
Specifically, the inner edge of the conical ring is in sliding contact with the outer edge of the core body.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model has simple structure, can improve the pressure between the leather cup and the cylinder sleeve, can increase the sealing performance between the leather cup and the cylinder sleeve, can prevent high-pressure slurry from puncturing the leather cup, and can prolong the service life of the leather cup.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a bottom view of the conical ring and the pressing ring.
Detailed Description
As shown in fig. 1-2, the high-pressure drilling pump piston comprises a core body 1, wherein an annular groove 2 is formed in the outer edge of the upper side of the core body 1, a leather cup 4 is sleeved in the annular groove 2, a plurality of vertical fixing columns 3 are fixed on the bottom of the annular groove 2, the plurality of vertical fixing columns 3 are uniformly distributed and arranged according to the axis circumference of the core body 1, blind holes 5 concentric with the fixing columns 3 are formed in the lower end of the leather cup 4, the fixing columns 3 are inserted in the blind holes 5, the leather cup 4 can be stabilized through the matching of the fixing columns 3 and the blind holes 5, an outer sleeve 8 is sleeved on the core body 1 above the leather cup 4, a top ring 9 is sleeved on the upper end of the core body 1, the inner edge of the top ring 9 is fixedly and hermetically connected with the outer edge of the core body 1, the outer edge of the top ring 9 is fixedly and hermetically connected with the inner edge of the outer sleeve 8, the lower end of the outer sleeve 8 is in sealing contact with the upper end of the leather cup 4, a plurality of through holes 10 are formed in the top ring 9, a compression ring 7 is sleeved on the core body 1 in the outer sleeve 8, 7 inner edges of clamping ring and 1 outer fringe sliding seal of core are connected, and 7 outer fringes of clamping ring and 8 inner fringe sliding seal of overcoat are connected, a plurality of seal grooves have all been seted up on the inner edge of clamping ring 7 and the outer fringe, install the sealing ring in the seal groove, and clamping ring 7 passes through sealing ring sealing connection with core 1 and overcoat 8, and clamping ring 7 is located top ring 9 below, and 7 lower extremes of clamping ring are fixed with awl ring 6, 6 inner edges of awl ring and 1 outer fringe sliding contact of core, 6 lower extremes of awl ring peg graft in the annular taper groove 11 of leather cup 4 upper end.
When the high-pressure mud-free anti-explosion rubber cup is used, high-pressure mud enters between the top ring 9 and the pressing ring 7 through the through hole 10 and acts on the upper end of the pressing ring 7, the pressing ring 7 drives the conical ring 6 to move downwards, and when the conical ring 6 moves downwards, the upper end of the rubber cup 4 expands outwards, so that the pressure of the upper end of the rubber cup 4 on the inner wall of the cylinder sleeve is increased, the sealing performance of the rubber cup 4 and the cylinder sleeve is improved, and the high-pressure mud can be prevented from puncturing the rubber cup 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. The piston is characterized in that an annular groove is formed in the outer edge of the upper side of the core, a leather cup is arranged in the annular groove in a sleeved mode, a plurality of vertical fixing columns are fixed to the bottom of the annular groove, blind holes concentric with the fixing columns are formed in the lower end of the leather cup, the fixing columns are inserted into the blind holes, an outer sleeve is sleeved on the core above the leather cup, a top ring is sleeved on the upper end of the core, the inner edge of the top ring is fixedly and hermetically connected with the outer edge of the core, the outer edge of the top ring is fixedly and hermetically connected with the inner edge of the outer sleeve, the lower end of the outer sleeve is in sealed contact with the upper end of the leather cup, a plurality of through holes are formed in the top ring, a compression ring is sleeved on the core in the outer sleeve, the inner edge of the compression ring is in sliding and sealing connection with the outer edge of the core, the outer edge of the compression ring is in sliding and sealing connection with the inner edge of the outer sleeve, the compression ring is located below the compression ring, a cone ring is fixed to the lower end of the cone ring, and is inserted into an annular cone groove in the upper end of the leather cup.
2. The high-pressure drilling pump piston as recited in claim 1, wherein the inner edge and the outer edge of the pressing ring are provided with a plurality of sealing grooves, sealing rings are installed in the sealing grooves, and the pressing ring is connected with the core body and the outer sleeve in a sealing manner through the sealing rings.
3. The high pressure drill pump piston of claim 1, wherein the plurality of vertical fixation posts are circumferentially spaced about the axial center of the core.
4. The high pressure drill pump piston of claim 1, wherein the inner edge of the conical ring is in sliding contact with the outer edge of the core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121235739.2U CN215444372U (en) | 2021-06-03 | 2021-06-03 | High-pressure drilling pump piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121235739.2U CN215444372U (en) | 2021-06-03 | 2021-06-03 | High-pressure drilling pump piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215444372U true CN215444372U (en) | 2022-01-07 |
Family
ID=79709673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121235739.2U Active CN215444372U (en) | 2021-06-03 | 2021-06-03 | High-pressure drilling pump piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215444372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776250A (en) * | 2022-06-01 | 2022-07-22 | 濮阳市恒信橡塑有限公司 | Sealing structure of rubber sealing element for oil field drilling |
-
2021
- 2021-06-03 CN CN202121235739.2U patent/CN215444372U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776250A (en) * | 2022-06-01 | 2022-07-22 | 濮阳市恒信橡塑有限公司 | Sealing structure of rubber sealing element for oil field drilling |
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| GR01 | Patent grant |