CN210461664U - Filtering piston and oil cylinder - Google Patents
Filtering piston and oil cylinder Download PDFInfo
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- CN210461664U CN210461664U CN201921031724.7U CN201921031724U CN210461664U CN 210461664 U CN210461664 U CN 210461664U CN 201921031724 U CN201921031724 U CN 201921031724U CN 210461664 U CN210461664 U CN 210461664U
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- piston
- oil
- filter
- filter screen
- piston head
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Abstract
The utility model discloses a filter piston, including the piston body, the piston body includes piston head and piston seat, be equipped with the through oil hole group that the axial link up on the piston head, form the installation cavity between the inner circle of piston seat and the right-hand member of piston head, be equipped with the filter screen in the installation cavity, the filter screen laminating is at the left end of piston head and through the clamp plate pressfitting, the left end of piston head gets into and flows through oil hole group, filter screen and clamp plate behind the fluid. An oil cylinder comprises the filtering piston. In this way, the utility model discloses filter piston and hydro-cylinder, can carry out inside filtration with the fluid through the piston, prevent that impurity from following the hydraulic oil circulation.
Description
Technical Field
The utility model relates to a hydro-cylinder field especially relates to a filter piston and hydro-cylinder.
Background
The conventional oil cylinder is provided with an oil inlet and an oil outlet, so that the conventional oil cylinder is connected with a pipeline on site, and the smooth flow of hydraulic oil into or out of the oil cylinder is ensured.
In some application occasions, the field working condition is severe or the equipment is simple and crude, for example, some customers need to weld a hard pipe and a pipe joint on the field and then connect the hard pipe and the pipe joint with a pump valve group for use, oil firstly flows through a filtering system in a hydraulic station through a pump, then flows through a valve group or other hydraulic elements and finally flows into the inner cavity of a hydraulic cylinder through the hard pipe; the hard pipe and the pipe joint are fastened through the clamping sleeve nut, and the hard pipe and the clamping sleeve nut need to be welded on site. If the interior of the hard pipe pipeline cannot be cleaned in the field welding process, or the welding slag in the pipeline cannot be removed after welding, the hydraulic oil flows through the filtering system when being pumped out, but the left welding slag or other on-site dirt can be brought into the inner cavity of the hydraulic cylinder when passing through the hard pipe pipeline, so that the cleanliness of the hydraulic oil is affected. The foreign matters may scratch the surface of the rod body or the surface of the cylinder body on the inner side of the hydraulic cylinder, or be adsorbed on the surface of the dynamic friction, and damage the guide sleeve or the sealing ring on the piston, thereby causing internal leakage or external leakage.
Disclosure of Invention
The utility model discloses the main technical problem who solves provides a filter piston and hydro-cylinder, can carry out inside filtration with the fluid through the piston, prevents that impurity from following the hydraulic oil circulation.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a filter piston, includes the piston body, the piston body includes piston head and piston seat, be equipped with the through oil hole group that the axial link up on the piston head, form the installation cavity between the inner circle of piston seat and the right-hand member of piston head, be equipped with the filter screen in the installation cavity, the filter screen laminating is at the left end of piston head and through the clamp plate pressfitting, the left end of piston head gets into behind the fluid through oil hole group, filter screen and clamp plate outflow.
In a preferred embodiment of the present invention, the oil through hole group includes a first oil through hole located at the center of the piston head and a plurality of second oil through holes spaced uniformly around the center of the piston head.
In a preferred embodiment of the present invention, the opening of the first oil through hole near one end of the filter screen is in a shape of a Chinese character 'ba'.
In a preferred embodiment of the present invention, the pressing plate is provided with a plurality of oil passing holes corresponding to the oil passing hole sets, and the oil passing hole sets include a first oil passing hole located at the center of the pressing plate and a plurality of second oil passing holes evenly distributed around the center of the pressing plate.
In a preferred embodiment of the present invention, a mounting groove is further formed on the inner ring of the piston seat, a resilient collar is disposed in the mounting groove, and the resilient collar is attached to the pressing plate to limit the axial movement of the pressing plate.
In a preferred embodiment of the present invention, the filter net is covered with a covering edge.
For solving the technical problem, the utility model discloses a another technical scheme is: the oil cylinder comprises a cylinder body, wherein the filtering piston is arranged in the cylinder body, and a piston rod is connected to the filtering piston.
The utility model has the advantages that: the utility model discloses filter piston and hydro-cylinder, can carry out inside filtration with the fluid through the piston, prevent that impurity from following the hydraulic oil circulation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
FIG. 1 is a schematic view of a preferred embodiment of a filter piston according to the present invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a schematic view of a portion of the structure of FIG. 1;
FIG. 5 is a schematic view of the structure of the cylinder;
the parts in the drawings are numbered as follows: 1. the piston comprises a piston body, 2, a piston head, 3, a piston seat, 4, an oil through hole group, 41, a first oil through hole, 42, a second oil through hole, 5, an installation cavity, 6, a filter screen, 7, a pressing plate, 8, an oil through hole group, 81, a first oil through hole, 82, a second oil through hole, 9, an installation groove, 10, an elastic retainer ring, 11, a cylinder body, 12 and a piston rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the filtering piston comprises a piston body, wherein the piston body 1 comprises a piston head 2 and a piston seat 3, an oil through hole group 4 which is axially communicated is arranged on the piston head 2, an installation cavity 5 is formed between an inner ring of the piston seat 3 and the right end of the piston head 2, a filter screen 6 is arranged in the installation cavity 5, the filter screen 6 is attached to the left end of the piston head 2 and is pressed through a pressing plate 7, and the left end of the piston head 2 flows out through the oil through hole group 4, the filter screen 6 and the pressing plate 7 after entering oil.
In addition, the oil through hole group 4 includes a first oil through hole 41 located at the center of the piston head 2 and a plurality of second oil through holes 42 evenly distributed at intervals around the center of the piston head 2.
In addition, the opening of the first oil passage hole 41 near one end of the filter screen 6 is in a splayed shape.
The pressing plate 7 is provided with a oil hole group 8 corresponding to the oil hole group 4, and the oil hole group 8 includes a first oil hole 81 located at the center of the pressing plate 7 and a plurality of second oil holes 82 evenly distributed around the center of the pressing plate 7 at intervals.
In addition, still be equipped with mounting groove 9 on the inner ring of piston seat 3, be equipped with circlip 10 in the mounting groove 9, circlip 10 and the laminating of clamp plate 7 are in order to restrict clamp plate 7 axial displacement.
In addition, the outside cladding of filter screen 6 has bordure 11, and the outer lane designs into bordure 11, prevents that the wire net edge from droing etc. and producing foreign matter such as iron fillings, and the filterable precision can be adjusted through changing filter screen 6 to the precision of filter screen 6 with mesh measurement, acquires the hydraulic oil of higher cleanliness.
The utility model discloses filter the piston, through set up filter screen 6 and clamp plate 7 on filtering the piston to 10 axial compresses tightly filter screen 6 and clamp plate 7 for the clearing hole circlip, fluid when the inner chamber flows, gets into this inside filter equipment through the preceding oil through-hole group 4 of filter screen 6, if there are welding slag or other filths in the fluid of original entering hydro-cylinder, they will be kept apart in filter screen one side, and clear fluid then can flow into the hydro-cylinder inboard through filter screen 6 formally.
An oil cylinder comprises a cylinder body, wherein the filtering piston is arranged in the cylinder body 11, and a piston rod 12 is connected to the filtering piston.
Be different from prior art, the utility model discloses filter piston and hydro-cylinder can carry out inside filtration with the fluid through the piston, prevents that impurity from following the hydraulic oil circulation.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (7)
1. The utility model provides a filter piston, its characterized in that, includes the piston body, the piston body includes piston head and piston seat, be equipped with the through oil hole group that the axial link up on the piston head, form the installation cavity between the inner circle of piston seat and the right-hand member of piston head, be equipped with the filter screen in the installation cavity, the filter screen laminating is at the left end of piston head and through the clamp plate pressfitting, the left end of piston head gets into behind the fluid through oil hole group, filter screen and clamp plate outflow.
2. The filter piston of claim 1, wherein the set of oil through holes includes a first oil through hole in a center of the piston head and a plurality of second oil through holes evenly spaced around the center of the piston head.
3. The filter piston of claim 2, wherein the opening of the first oil through hole near the filter screen is splayed.
4. The filter piston as claimed in claim 3, wherein the pressure plate is provided with an oil hole group corresponding to the oil hole group, and the oil hole group comprises a first oil hole at the center of the pressure plate and a plurality of second oil holes distributed at regular intervals around the center of the pressure plate.
5. The filter piston of claim 1, wherein the inner ring of the piston seat is further provided with a mounting groove, a resilient collar is arranged in the mounting groove, and the resilient collar is attached to the pressure plate to limit the axial movement of the pressure plate.
6. The filter piston of any of claims 1-5, wherein the outside of the filter screen is covered with a tipping.
7. An oil cylinder, characterized by comprising a cylinder body, wherein a filtering piston according to any one of claims 1-6 is arranged in the cylinder body, and a piston rod is connected to the filtering piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921031724.7U CN210461664U (en) | 2019-07-04 | 2019-07-04 | Filtering piston and oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921031724.7U CN210461664U (en) | 2019-07-04 | 2019-07-04 | Filtering piston and oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210461664U true CN210461664U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921031724.7U Active CN210461664U (en) | 2019-07-04 | 2019-07-04 | Filtering piston and oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210461664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159905A1 (en) * | 2022-02-28 | 2023-08-31 | 娄底市中兴液压件有限公司 | Rod head connecting assembly, hydraulic cylinder, and operation machine |
-
2019
- 2019-07-04 CN CN201921031724.7U patent/CN210461664U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159905A1 (en) * | 2022-02-28 | 2023-08-31 | 娄底市中兴液压件有限公司 | Rod head connecting assembly, hydraulic cylinder, and operation machine |
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