CN217301567U - Long-life stand wear and tear piston - Google Patents
Long-life stand wear and tear piston Download PDFInfo
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- CN217301567U CN217301567U CN202221103064.0U CN202221103064U CN217301567U CN 217301567 U CN217301567 U CN 217301567U CN 202221103064 U CN202221103064 U CN 202221103064U CN 217301567 U CN217301567 U CN 217301567U
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- piston
- wedge
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- inner cavity
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Abstract
The utility model discloses a long-life abrasion-resistant piston, which is used for reciprocating motion in a cylinder body and comprises a piston body, a cock and a sealing ring, wherein the circumferential surface of the piston body is provided with an annular clamping groove, and the sealing ring is arranged in the clamping groove; the piston body is provided with an inner cavity, inner threads are arranged on the inner wall of the inner cavity, and one end of the inner cavity extends to the lower end of the piston body; the bottom of the clamping groove is connected with the inner cavity through a plurality of through grooves; an elastic piece and a telescopic piece are arranged in the through groove, and the telescopic piece comprises a cylindrical part and a wedge-shaped tongue; the side surface of the cock is provided with an external thread which is in threaded connection with the internal thread; the side surface of the wedge-shaped tongue is pressed tightly by screwing the cock into the through groove, so that the wedge-shaped tongue is retracted into the through groove, and the elastic piece is extruded by the cylindrical body part, so that the tightness between the sealing ring and the cylinder body is enhanced. Even if the periphery of the seal ring is abraded, the periphery of the seal ring can still be kept in close contact with the inner wall of the cylinder body by screwing the cock. The service life of the piston is prolonged.
Description
Technical Field
The utility model relates to a long-life stand wear and tear piston especially relates to the seal structure of piston.
Background
The piston is a reciprocating motion machine member. The specific shape, location and size of the piston must be adapted to the cylinder. The piston slides in the cylinder body continuously, and the pressure received in the operation process is extremely high, so that the sealing structure between the piston and the cylinder body directly influences the whole pressurized pressure stabilizing effect. The long-time operation, seal structure wearing and tearing, sealing performance decline, when serious, lead to piston or cylinder body to scrap, can't continue work. The piston has a short life, increasing the operating and maintenance costs.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model aims to provide a piston with long service life and wear resistance. To solve the problems mentioned in the background section.
In order to achieve the above purpose, the utility model discloses a technical scheme is: a long-life wear-resistant piston is used for reciprocating in a cylinder body and comprises a piston body and a sealing ring, wherein an annular clamping groove is formed in the circumferential surface of the piston body, the sealing ring is arranged in the clamping groove, and the outer circumferential surface of the sealing ring protrudes outwards from the clamping groove; the piston body is provided with an inner cavity, inner threads are arranged on the inner wall of the inner cavity, and one end of the inner cavity extends to the lower end of the piston body; the groove bottom of the clamping groove is connected with the inner cavity through a plurality of through grooves, and the through grooves are in a virtual cylinder shape and are distributed along the radial direction of the piston body; an elastic piece and a telescopic piece are arranged in the through groove, two ends of the elastic piece are respectively connected with the inner side of the sealing ring and the left end of the telescopic piece, the telescopic piece comprises a cylindrical body part and a wedge-shaped tongue which are connected with each other, and the elastic piece drives the wedge-shaped tongue to extend out of the inner cavity; the long-life wear-resistant piston also comprises a cock, the cock is in a cylindrical shape, the side surface of the cock is provided with an external thread, and the external thread is in threaded connection with the internal thread; a screw tap that compresses the wedge tongue, the cylindrical body, the resilient member and the sealing ring.
The utility model discloses further setting up to: one end of the cock facing the wedge-shaped tongue is connected with a circular truncated cone, and the taper of the circular truncated cone is the same as the slope of the side face of the wedge-shaped tongue facing the cock.
The utility model discloses further setting up to: one end of the cock, which is far away from the wedge-shaped piece, is provided with a notch, and a grabbing plate is arranged in the notch.
The utility model discloses further setting up to: the guide groove is formed in the inner side wall of the through groove and is parallel to the axis of the through groove, and the side face of the cylindrical body is connected with the guide edge which slides in the guide groove.
The utility model discloses further setting up to: a piston rod is inserted in the inner cavity.
The utility model discloses further setting up to: the center of the top end surface of the piston body is provided with a center hole, a plurality of radial grooves are formed from the center hole to the edge of the top end surface of the piston body, and the depth of the center hole is deeper than that of the radial grooves.
The utility model discloses further setting up to: the width of the clamping groove is larger than that of the through groove.
Compared with the prior art, the beneficial effects of the utility model are that: the inner wall of the inner cavity is provided with the internal thread, the side surface of the cock is provided with the external thread, the external thread is in threaded connection with the internal thread, the side surface of the wedge-shaped tongue is compressed by screwing the cock into the through groove, the wedge-shaped tongue is enabled to be retracted into the through groove, the elastic piece is extruded through the cylindrical body, and the tightness between the sealing ring and the cylinder body is enhanced. Even if the periphery of the seal ring is abraded, the periphery of the seal ring can still be kept in close contact with the inner wall of the cylinder body by screwing the cock. The service life of the piston is prolonged.
The above description is only an outline of the technical solution of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented in accordance with the content of the specification, the following detailed description will be given of preferred embodiments of the present invention in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a long-life wear-resistant piston according to a preferred embodiment of the present invention;
FIG. 2 is a schematic illustration of the long life wear resistant piston of FIG. 1;
fig. 3 is a schematic view of another state of the long life wear resistant piston of fig. 1.
In the figure: 1. a cylinder body; 2. a piston body; 3. a cock; 4. a recess; 5. grabbing a plate; 6. a piston rod; 7. a circular truncated cone; 8. an external thread; 9. an internal thread; 10. a wedge-shaped tongue; 11. a guide edge; 12. an elastic member; 13. a seal ring; 14. a central bore; 15. a radial slot.
Detailed Description
The following description of the preferred embodiments of the present invention will be provided with reference to the accompanying drawings, so that the advantages and features of the present invention can be easily understood by those skilled in the art, and the scope of the present invention can be clearly and clearly defined.
Referring to fig. 1-3, the long-life wear-resistant piston in the present embodiment is used for reciprocating in a cylinder 1, and includes a piston body 2 and a seal ring 13, wherein an annular groove is formed on a circumferential surface of the piston body 2, the seal ring 13 is disposed in the groove, and an outer circumferential surface of the seal ring 13 protrudes outward from the groove; the piston body 2 is provided with an inner cavity, inner threads 9 are arranged on the inner wall of the inner cavity, and one end of the inner cavity extends to the lower end of the piston body 2; the groove bottom of the clamping groove is connected with the inner cavity through a plurality of through grooves, and the through grooves are in a virtual cylinder shape and are distributed along the radial direction of the piston body 2; an elastic piece 12 and a telescopic piece are arranged in the through groove, two ends of the elastic piece 12 are respectively connected with the inner side of the sealing ring 13 and the left end of the telescopic piece, the telescopic piece comprises a cylindrical body part and a wedge-shaped tongue 10 which are connected with each other, and the elastic piece 12 drives the wedge-shaped tongue 10 to extend out of the inner cavity; the long-life wear-resistant piston further comprises a cock 3, the cock 3 is in a cylindrical shape, the side face of the cock is provided with an external thread 8, and the external thread 8 is in threaded connection with an internal thread 9; the tap 3 is screwed in and the tap 3 presses the wedge tongue 10, the cylindrical body, the elastic member 12 and the packing 13.
The inner wall of the inner cavity is provided with the internal thread 9, the side surface of the cock 3 is provided with the external thread 8, the external thread 8 is in threaded connection with the internal thread 9, the side surface of the wedge-shaped tongue 10 is pressed by screwing the cock 3, the wedge-shaped tongue 10 is promoted to retract into the through groove, the elastic part 12 is extruded by the cylindrical part, and the tightness between the sealing ring 13 and the cylinder body 1 is enhanced. Even if the outer circumference of the packing 13 is worn, the tight contact between the outer circumference of the packing 13 and the inner wall of the cylinder 1 is maintained by screwing the cock 3. The service life of the piston is prolonged.
In order to facilitate the retraction of the wedge tongue 10 into the through groove, the present invention is further configured as: one end of the cock 3 facing the wedge-shaped tongue 10 is connected with a truncated cone body 7, and the taper of the truncated cone body 7 is the same as the slope of the wedge-shaped tongue 10 facing the side face of the cock 3. By the side of the truncated cone 7 exerting a force on the wedge tongue 10, the wedge tongue 10 can be more easily retracted into the through groove.
In order to facilitate the rotation of the cock 3, the utility model discloses further set up as: the end of the tap 3 facing away from the wedge is provided with a recess 4, in which recess 4 a catch plate 5 is arranged. The user grasps the grasping plate 5 with fingers, and rotates the cock 3, so that the tightness between the sealing ring and the cylinder body 1 can be adjusted.
In order to prevent the wedge tongue 10 from rotating, which results in the cock 3 not forcing the wedge tongue 10 to retract into the through groove, the utility model discloses further set up as: the guide groove is formed in the inner side wall of the through groove and is parallel to the axis of the through groove, the guide edge 11 is connected to the side face of the cylindrical body, and the guide edge 11 slides in the guide groove. The configuration of the guide grooves and the guide edges 11 enables to keep the direction of the wedge tongue 10 constant and not to rotate in the through groove, facilitating the retraction of the wedge tongue 10 into the through groove.
The utility model discloses further setting up to: a piston rod 6 is inserted in the inner cavity.
For the lubricating oil that makes the adhesion of 1 inner wall of cylinder body evenly distribute on the periphery of piston body 2, the utility model discloses further set up to: the center of the top end surface of the piston body 2 is provided with a central hole 14, a plurality of radial grooves 15 are arranged from the central hole 14 to the edge of the top end surface of the piston body 2, and the depth of the central hole 14 is deeper than that of the radial grooves 15. The deeper central bore 14 allows more lubricant to be collected and evenly delivered to the circumferential surface of the piston body 2 through the radial grooves 15.
The utility model discloses further set up to: the width of the clamping groove is larger than that of the through groove.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (7)
1. A long-life abrasion-resistant piston is used for reciprocating in a cylinder body and comprises a piston body and a sealing ring, wherein an annular clamping groove is formed in the circumferential surface of the piston body, the sealing ring is arranged in the clamping groove, and the outer circumferential surface of the sealing ring protrudes outwards from the clamping groove; the piston is characterized in that the piston body is provided with an inner cavity, inner threads are arranged on the inner wall of the inner cavity, and one end of the inner cavity extends to the lower end of the piston body; the groove bottom of the clamping groove is connected with the inner cavity through a plurality of through grooves, and the through grooves are in a virtual cylinder shape and are distributed along the radial direction of the piston body; an elastic piece and a telescopic piece are arranged in the through groove, two ends of the elastic piece are respectively connected with the inner side of the sealing ring and the left end of the telescopic piece, the telescopic piece comprises a cylindrical body part and a wedge-shaped tongue which are connected with each other, and the elastic piece drives the wedge-shaped tongue to extend out of the inner cavity; the long-life wear-resistant piston also comprises a cock, the cock is in a cylindrical shape, the side surface of the cock is provided with an external thread, and the external thread is in threaded connection with the internal thread; the tap is screwed in and presses the wedge tongue, the cylindrical body, the elastic member and the sealing ring.
2. The long life wear resistant piston of claim 1 wherein the tapered end of the plug facing the wedge tongue is connected to a frustoconical body having the same taper as the slope of the wedge tongue facing the plug.
3. The long life wear resistant piston of claim 1 wherein an end of said tap facing away from said wedge is provided with a notch having a catch plate disposed therein.
4. The long life wear-resistant piston of claim 1, wherein the through slots have guide grooves formed on inner side walls thereof, the guide grooves being parallel to the axis of the through slots, and the cylindrical body has guide ribs attached to side surfaces thereof, the guide ribs sliding in the guide grooves.
5. The long life, wear resistant piston of claim 1 wherein a piston rod is inserted into said internal chamber.
6. The long life wear resistant piston of claim 1, wherein the center of the top surface of the piston body is provided with a center hole, and the center hole is provided with a plurality of radial grooves from the edge of the top surface of the piston body, and the depth of the center hole is deeper than the depth of the radial grooves.
7. The long life, wear resistant piston of claim 1 wherein said slot has a width greater than a width of said channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221103064.0U CN217301567U (en) | 2022-05-09 | 2022-05-09 | Long-life stand wear and tear piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221103064.0U CN217301567U (en) | 2022-05-09 | 2022-05-09 | Long-life stand wear and tear piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217301567U true CN217301567U (en) | 2022-08-26 |
Family
ID=82916604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221103064.0U Active CN217301567U (en) | 2022-05-09 | 2022-05-09 | Long-life stand wear and tear piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217301567U (en) |
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2022
- 2022-05-09 CN CN202221103064.0U patent/CN217301567U/en active Active
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