CN218325249U - Novel piston assembly - Google Patents
Novel piston assembly Download PDFInfo
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- CN218325249U CN218325249U CN202222519439.8U CN202222519439U CN218325249U CN 218325249 U CN218325249 U CN 218325249U CN 202222519439 U CN202222519439 U CN 202222519439U CN 218325249 U CN218325249 U CN 218325249U
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Abstract
The utility model relates to a mud pump related technical field, in particular to a novel piston assembly, which comprises a piston rod, a piston core, a rubber, a first-level pressing plate and a second-level pressing plate, wherein the piston rod is composed of a first-level rod body and a second-level rod body, and a first-level external thread is arranged on the side wall of the first-level rod body; through setting up by the piston rod, the piston core, the rubber, the one-level clamp plate, the second grade clamp plate, the piston assembly that one-level fastener and second grade fastener combination constitute, and constitute by the combination of the one-level body of rod and the second grade body of rod through setting the piston rod into, and set up the one-level external screw thread on the lateral wall of the one-level body of rod, and set up the second grade external screw thread on the lateral wall of the second grade body of rod, and set up the one-level screw hole at the terminal surface of the second grade body of rod, thereby form the extrusion to the rubber through one-level clamp plate and second grade clamp plate, thereby let the rubber produce deformation, thereby improve the leakproofness between rubber and the piston cylinder lateral wall, and when it does not take place deformation, also can improve the convenience that piston core and rubber inserted the piston cylinder.
Description
Technical Field
The utility model relates to a mud pump correlation technique field specifically is a novel piston assembly.
Background
The piston assembly is one of the main parts of the hydraulic end system of the slurry pump and is also one of the wearing parts in the drilling work. The discharge pressure of slush pump just produces through piston assembly reciprocal linear motion in the piston, and its piston assembly comprises piston core, rubber, clamp plate and fastener etc. but rubber structure is comparatively simple on traditional piston core to all adopt interference fit between it and the piston cylinder, thereby lead to it comparatively hard when the installation, for this reason, the utility model provides a novel piston assembly is used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel piston assembly to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a novel piston assembly, said novel piston assembly comprising:
the piston rod is composed of a primary rod body and a secondary rod body, a primary external thread is formed in the side wall of the primary rod body, a secondary external thread is formed in the side wall of the secondary rod body, and a primary threaded hole is formed in the end face of the secondary rod body;
the center of the piston core is provided with a secondary threaded hole, and the piston core is in threaded connection with the secondary rod body;
the rubber is of a round tube structure and is sleeved on the piston core;
the primary pressure plate is positioned and installed on the primary rod body through a primary fastener;
the second grade clamp plate, set up the through-hole on the second grade clamp plate, and the second grade clamp plate cover is established on the one-level body of rod, and the second grade clamp plate fixes a position through the second grade fastener, and the rubber is fixed a position through one-level clamp plate and second grade clamp plate.
Preferably, be integrated into one piece between the one-level body of rod and the second grade body of rod, and one-level body of rod diameter value is greater than the diameter value of the second grade body of rod, and the external diameter value of piston core is greater than the diameter value of the one-level body of rod, rubber internal diameter value is identical with piston core external diameter value, and the external diameter value of rubber is identical with the internal diameter value of piston cylinder.
Preferably, the outer diameter values of the primary pressure plate and the secondary pressure plate are matched, and the outer diameter value of the primary pressure plate is smaller than that of the rubber.
Preferably, the first-stage fastener is a hexagon socket head cap screw, a nut groove is formed in the edge position of the through hole in the second-stage pressing plate, the size of the nut groove is matched with that of a nut of the first-stage fastener, and when the first-stage fastener is actually screwed up, the first-stage pressing plate abuts against the second-stage rod body.
Preferably, the rubber has a length greater than the length of the piston core, and the rubber is in a compressed state when the secondary fastener is in a tightened state.
Preferably, the side wall of the rubber sheet is provided with a plurality of air holes, the air holes are annular notches, and the air holes are arranged at equal intervals.
Preferably, the second-stage fastening piece is formed by combining a first-stage locking nut and a second-stage locking nut, the first-stage locking nut and the second-stage locking nut are arranged in a propping mode when the first-stage locking nut and the second-stage locking nut are actually screwed down, and the first-stage locking nut is not in contact with the piston core.
Preferably, the piston core is chamfered at the position of an outer side wall line of one end of the secondary fastener.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the piston assembly is formed by combining a piston rod, a piston core, a rubber, a primary pressing plate, a secondary pressing plate, a primary fastener and a secondary fastener, the piston rod is formed by combining a primary rod body and a secondary rod body, a primary external thread is formed on the side wall of the primary rod body, a secondary external thread is formed on the side wall of the secondary rod body, and a primary threaded hole is formed in the end face of the secondary rod body, so that the rubber is extruded through the primary pressing plate and the secondary pressing plate, the rubber is deformed, the sealing performance between the rubber and the side wall of the piston cylinder is improved, and the convenience of inserting the piston core and the rubber into the piston cylinder can be improved when the rubber is not deformed;
2. and the air holes are formed in the side wall of the rubber sheet, so that the air pressure in the air holes is increased when the rubber sheet is pressed, the expansion trend towards the transverse direction is formed, and the integral deformation effect of the rubber sheet is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a half sectional view of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
fig. 4 is a schematic view of the piston rod structure of the present invention;
FIG. 5 is a schematic view of the piston core structure of the present invention;
fig. 6 is a schematic view of the structure of the primary pressing plate of the present invention.
In the figure: piston rod 1, piston core 2, rubber 3, one-level clamp plate 4, second grade clamp plate 5, one-level fastener 6, second grade fastener 7, the one-level body of rod 8, the second grade body of rod 9, one-level screw hole 10, second grade screw hole 11, through-hole 12, nut groove 13, gas pocket 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a novel piston assembly comprises a piston rod 1, a piston core 2, a rubber 3, a primary pressing plate 4 and a secondary pressing plate 5, wherein the piston rod 1 is composed of a primary rod body 8 and a secondary rod body 9, a primary external thread is arranged on the side wall of the primary rod body 8, a secondary external thread is arranged on the side wall of the secondary rod body 9, a primary threaded hole 10 is arranged on the end surface of the secondary rod body 9, a secondary threaded hole 11 is arranged at the central position of the piston core 2, the piston core 2 is in threaded connection with the secondary rod body 9, the rubber 3 is of a circular tube structure, the rubber 3 is sleeved on the piston core 2, the primary pressing plate 4 is positioned and installed on the primary rod body 8 through a primary fastener 6, a through hole 12 is arranged on the secondary pressing plate 5, the secondary pressing plate 5 is sleeved on the primary rod body 8, and the secondary pressing plate 5 is positioned through a secondary fastener 7, and the rubber 3 is positioned by the primary pressing plate 4 and the secondary pressing plate 5, the piston assembly formed by combining the piston rod 1, the piston core 2, the rubber 3, the primary pressing plate 4, the secondary pressing plate 5, the primary fastening piece 6 and the secondary fastening piece 7 is arranged, the piston rod 1 is formed by combining the primary rod body 8 and the secondary rod body 9, the primary external thread is arranged on the side wall of the primary rod body 8, the secondary external thread is arranged on the side wall of the secondary rod body 9, and the primary threaded hole 10 is arranged on the end surface of the secondary rod body 9, so that the rubber 3 is extruded by the primary pressing plate 4 and the secondary pressing plate 5, the rubber 3 is deformed, the sealing property between the rubber 3 and the side wall of the piston cylinder is improved, and when the rubber is not deformed, the convenience of inserting the piston core 2 and the rubber 3 into the piston cylinder is also improved.
Be integrated into one piece between the one-level body of rod 8 and the second grade body of rod 9, and 8 diameter values of the one-level body of rod are greater than the diameter value of the second grade body of rod 9, and the external diameter value of piston core 2 is greater than the diameter value of the one-level body of rod 8, and 3 internal diameter values of rubber coincide with 2 external diameter values of piston core, and the external diameter value of rubber 3 coincides with the internal diameter value of piston cylinder.
The outer diameter values of the first-stage pressing plate 4 and the second-stage pressing plate 5 are matched, and the outer diameter value of the first-stage pressing plate 4 is smaller than that of the rubber sheet 3.
The first-stage fastener 6 is a hexagon socket head cap screw, a nut groove 13 is formed in the edge position of the through hole 12 in the second-stage pressure plate 5, the size of the nut groove 13 is matched with that of a nut of the first-stage fastener 6, and when the first-stage fastener 6 is actually screwed, the first-stage pressure plate 4 is abutted to the second-stage rod body 9.
The rubber 3 has a length greater than that of the piston core 2, and the rubber 3 is in a compressed state when the secondary fastener 7 is in a tightened state.
The side wall of the rubber 3 is provided with a plurality of air holes 14, the air holes 14 are annular notches, the air holes 14 are arranged at equal intervals, and the air holes 14 are formed in the side wall of the rubber 3, so that the air pressure in the air holes 14 is increased when the rubber 3 is pressed, the expansion trend towards the transverse direction is formed, and the integral deformation effect of the rubber 3 is improved.
The second-stage fastening piece 7 is formed by combining a first-stage locking nut and a second-stage locking nut, the first-stage locking nut and the second-stage locking nut are arranged in a propping mode when being actually screwed down, the first-stage locking nut and the second-stage locking nut are not in contact with each other, and the locking stability is improved through the double nuts.
The position of the outer side wall sideline of one end of the piston core 2 facing the secondary fastener 7 is subjected to chamfering treatment;
the working principle is as follows: the piston assembly is formed by combining a piston rod 1, a piston core 2, a rubber sheet 3, a first-stage pressing plate 4, a second-stage pressing plate 5, a first-stage fastener 6 and a second-stage fastener 7, the piston rod 1 is formed by combining a first-stage rod body 8 and a second-stage rod body 9, a first-stage external thread is formed on the side wall of the first-stage rod body 8, a second-stage external thread is formed on the side wall of the second-stage rod body 9, a first-stage threaded hole 10 is formed in the end face of the second-stage rod body 9, the rubber sheet 3 is extruded through the first-stage pressing plate 4 and the second-stage pressing plate 5, the rubber sheet 3 is deformed, the sealing performance between the rubber sheet 3 and the side wall of the piston cylinder is improved, when the rubber sheet 3 is not deformed, the convenience of inserting the piston core 2 and the rubber sheet 3 into the piston cylinder can be improved, when the piston assembly is used, a worker firstly twists the second-stage fastener 7 on the first-stage rod body 8, then sleeves the second-stage pressing plate 5 on the first-stage rod body 8, then twists the piston core 2 on the second-stage rod body 9, then twists the piston core 3 and the second-stage rubber sheet 3 and then tightens the piston cylinder 3.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A novel piston assembly is characterized in that: the novel piston assembly includes:
the piston rod (1) is formed by combining a first-stage rod body (8) and a second-stage rod body (9), a first-stage external thread is formed in the side wall of the first-stage rod body (8), a second-stage external thread is formed in the side wall of the second-stage rod body (9), and a first-stage threaded hole (10) is formed in the end face of the second-stage rod body (9);
the piston rod comprises a piston core (2), wherein a secondary threaded hole (11) is formed in the center of the piston core (2), and the piston core (2) is in threaded connection with a secondary rod body (9);
the rubber (3) is of a circular tube structure, and the rubber (3) is sleeved on the piston core (2);
the primary pressure plate (4) is positioned and installed on the primary rod body (8) through a primary fastener (6);
the novel steel wire rope fixing device comprises a second-stage pressing plate (5), wherein a through hole (12) is formed in the second-stage pressing plate (5), the second-stage pressing plate (5) is sleeved on a first-stage rod body (8), the second-stage pressing plate (5) is located through a second-stage fastener (7), and a rubber (3) is located through a first-stage pressing plate (4) and the second-stage pressing plate (5).
2. The novel piston assembly of claim 1, wherein: be integrated into one piece between one-level body of rod (8) and the second grade body of rod (9), and one-level body of rod (8) diameter value is greater than the diameter value of the second grade body of rod (9), and the external diameter value of piston core (2) is greater than the diameter value of one-level body of rod (8), rubber (3) internal diameter value is coincide with piston core (2) external diameter value, and the external diameter value of rubber (3) is coincide with the internal diameter value of piston cylinder.
3. The novel piston assembly of claim 2, wherein: the outer diameter values of the first-stage pressing plate (4) and the second-stage pressing plate (5) are matched, and the outer diameter value of the first-stage pressing plate (4) is smaller than that of the rubber (3).
4. The novel piston assembly of claim 3, wherein: the first-stage fastener (6) is an inner hexagon bolt, a nut groove (13) is formed in the edge position of the through hole (12) in the second-stage pressing plate (5), the size of the nut groove (13) is identical to that of a nut of the first-stage fastener (6), and when the first-stage fastener (6) is actually screwed down, the first-stage pressing plate (4) is abutted to the second-stage rod body (9).
5. The novel piston assembly of claim 4, wherein: the length value of the rubber (3) is larger than that of the piston core (2), and when the secondary fastener (7) is in a screwed state, the rubber (3) is in a compressed state.
6. The novel piston assembly of claim 5, wherein: the rubber sheet (3) is characterized in that an air hole (14) is formed in the side wall of the rubber sheet (3), the air hole (14) is an annular notch, and the air holes (14) are arranged at equal intervals.
7. The novel piston assembly of claim 5, wherein: the second-stage fastener (7) is formed by combining a first-stage locking nut and a second-stage locking nut, the first-stage locking nut and the second-stage locking nut are arranged in a propping mode when the first-stage locking nut and the second-stage locking nut are actually screwed down, and the first-stage locking nut is not in contact with the piston core (2).
8. The novel piston assembly of claim 7, wherein: the piston core (2) is chamfered towards the outer side wall sideline position of one end of the secondary fastener (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222519439.8U CN218325249U (en) | 2022-09-22 | 2022-09-22 | Novel piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222519439.8U CN218325249U (en) | 2022-09-22 | 2022-09-22 | Novel piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218325249U true CN218325249U (en) | 2023-01-17 |
Family
ID=84838662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222519439.8U Active CN218325249U (en) | 2022-09-22 | 2022-09-22 | Novel piston assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218325249U (en) |
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2022
- 2022-09-22 CN CN202222519439.8U patent/CN218325249U/en active Active
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