CN211975984U - One-way valve with simple structure - Google Patents
One-way valve with simple structure Download PDFInfo
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- CN211975984U CN211975984U CN202020362875.7U CN202020362875U CN211975984U CN 211975984 U CN211975984 U CN 211975984U CN 202020362875 U CN202020362875 U CN 202020362875U CN 211975984 U CN211975984 U CN 211975984U
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Abstract
The utility model discloses a simple structure's check valve, including valve seat, valve and spring, its characterized in that: a valve cavity is arranged in the valve seat, an oil outlet hole is arranged in the valve seat in the middle of the valve cavity, and the oil outlet hole is communicated with the valve cavity; the right end of the valve cavity is provided with an oil inlet, the valve is arranged in the valve cavity and is in a cylinder shape with at least one closed end; the outer diameter of the valve is 0.02-0.04 mm smaller than the inner diameter of the valve cavity, and the valve is in sliding sealing fit with the inner wall of the valve cavity; a spring is arranged between the side wall at the left end of the valve cavity and the valve, and the valve is positioned on the right side of the oil outlet hole in the relaxation state of the spring; the valve is positioned on the left side of the oil outlet hole in the oil passing state; the side wall of the valve cavity at the oil inlet radially shrinks to form a closing part for preventing the valve from being separated. The utility model discloses reliable operation, the action is sensitive, the manufacturing of being convenient for, the cost is lower, can realize the one-way effect that switches on of lubricating oil steadily, has extensive application prospect in motor vehicle and various large-scale mechanical equipment.
Description
Technical Field
The utility model relates to a lubricated oil circuit one-way conduction technical field.
Background
In various use occasions such as automobiles, mechanical equipment and the like, a lubricating oil way is required to be arranged to ensure the normal work of mechanical moving parts. In order to prevent the backflow of the lubricating oil, a check valve is required to be arranged on the lubricating oil path.
The existing one-way valve structure is shown in figure 1 and comprises a valve seat and a spring seat 2, wherein a lubricating oil passage 3 is correspondingly arranged in the valve seat 1 and the spring seat 2, a valve cavity 4 is arranged at the middle section of the valve seat 1, a valve 5 is arranged in the valve cavity 4, and two ends of the valve cavity are respectively connected with the lubricating oil passage on the valve seat and the lubricating oil passage on the spring seat; one end of the valve 5 is provided with a taper part 6 for sealing a lubricating oil passage, and the other end of the valve is connected with the spring seat 2 through a spring 7.
According to the direction of figure 1, when the lubricating oil flows from left to right, the valve compresses the spring rightwards under the action of oil pressure, so that the conical part moves rightwards and the lubricating oil passage is communicated with the valve cavity, and the lubricating oil can pass through the one-way valve from left to right to play a role of one-way conduction.
When the lubricating oil flows from right to left, under the action of the spring and the oil pressure, the conical part is inserted into the lubricating oil passage and isolates the lubricating oil passage from the valve cavity, so that the function of preventing the oil from flowing backwards is achieved.
The existing one-way valve is relatively complex in structure, and large parts are divided into three parts, namely a valve seat, a spring seat and a valve. A plug-in fit and sealing structure such as a sealing ring 8 is also arranged between the valve seat and the spring seat, and the valve is divided into three sections, namely a conical part, a middle section main body part and a rear section sleeved with a reducing part of a spring; the spring seat is for cooperating with the valve seat, and some structures need to be set up again, like threaded connection's structure, the whole shape of T shape, seal groove and sealing ring etc.. The existing one-way valve structure is relatively complex in overall manufacturing process, multiple in parts and high in cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, the action is reliable, the lower check valve of cost.
In order to realize the purpose, the one-way valve with simple structure of the utility model comprises a valve seat, a valve and a spring, wherein a valve cavity is arranged in the valve seat, and an oil outlet hole is arranged in the valve seat at the middle part of the valve cavity and is communicated with the valve cavity;
the right end of the valve cavity is provided with an oil inlet, the valve is arranged in the valve cavity and is in a cylinder shape with at least one closed end; the outer diameter of the valve is 0.02-0.04 mm smaller than the inner diameter of the valve cavity, and the valve is in sliding sealing fit with the inner wall of the valve cavity;
a spring is arranged between the side wall at the left end of the valve cavity and the valve, and the valve is positioned on the right side of the oil outlet hole in the relaxation state of the spring; the spring is compressed and the valve is positioned on the left side of the oil outlet hole in the oil passing state;
and the side wall of the valve cavity at the oil inlet radially shrinks to form a closing part for preventing the valve from being separated.
And the side wall of the left end of the valve cavity is provided with an air hole which is communicated with the inside and the outside.
The left end part of the valve seat is provided with an expanding part, and the section of the valve seat is T-shaped in the direction passing through the axis of the valve seat.
In the direction perpendicular to the axis of the valve seat, the cross section contour of the diameter expanding part of the valve seat is hexagonal, and the cross section contour of the valve seat at the right side of the diameter expanding part is circular; the outer surface of the right part of the valve seat is provided with an external thread.
The left end and the right end of the valve seat are both provided with chamfer structures.
The utility model discloses have following advantage:
the utility model has simple structure, eliminates the spring seat, and reduces the number of large parts from three parts to two parts; the valve is not divided into three sections, and the traditional three-section structure is changed into a tubular structure. The reduction of parts and the simplification of the structure reduce the material cost on one hand and reduce the manufacturing and assembling cost on the other hand.
The closing-up part is very simple and convenient to manufacture, and can be conveniently manufactured by extruding the closing-up part through a pneumatic cylinder or rotating and pressing the closing-up part on a lathe.
The setting of air vent can avoid the gas of the left valve intracavity of valve to be compressed when the oil feed, eliminates the resistance that atmospheric pressure formed. If the air vent is not provided, the length of the valve chamber on the left side of the oil outlet hole can be appropriately shortened, and the spring force can be appropriately reduced.
This shape of the valve seat makes it very convenient to use an integral T-shaped structure for fitting it in the place of use.
The setting of external screw thread can conveniently be with the utility model discloses in the mounting hole of assembly on the equipment of needs. Of course, the utility model is convenient to be removed in a rotating way.
The setting of chamfer structure can get rid of the burr that produces because of machining on the valve seat on the one hand, and on the other hand is also convenient with the utility model discloses assemble in use occasions such as motor vehicle or lathe.
Both ends of the shutter can be closed, but this increases the material costs. If both ends are open, the function of one-way conduction cannot be achieved. Therefore, one end of the valve is closed, materials can be saved to the maximum degree while the valve plays a role in one-way conduction, and the spring is allowed to extend into the cylinder body of the valve, so that the spring and the valve are matched more stably.
The utility model discloses reliable operation, the action is sensitive, the manufacturing of being convenient for, the cost is lower, can realize the one-way effect that switches on of lubricating oil steadily, has extensive application prospect in motor vehicle and various large-scale mechanical equipment.
Drawings
Fig. 1 is a schematic structural view of a conventional check valve;
fig. 2 is a schematic structural diagram of the present invention;
fig. 3 is an enlarged view at a in fig. 1.
Detailed Description
As shown in fig. 2 and 3, the one-way valve with simple structure of the present invention comprises a valve seat 10, a valve 11 and a spring 12, wherein a valve cavity 13 is arranged in the valve seat 10, an oil outlet 21 is arranged in the valve seat 10 at the middle of the valve cavity 13, and the oil outlet 21 is communicated with the valve cavity 13;
an oil inlet 14 is arranged at the right end of the valve cavity 13, the valve 11 is arranged in the valve cavity 13, and the valve 11 is in a cylinder shape with at least one closed end; the outer diameter of the valve 11 is 0.02-0.04 mm (including two end values) smaller than the inner diameter of the valve cavity 13, and the valve 11 is in sliding sealing fit with the inner wall of the valve cavity 13; here, sealing means sealing against passing media, primarily against lubricating oil. The 0.02-0.04 mm is the data obtained by the experiment, the clearance is too small, although the sealing performance is not problematic, but the sliding friction force is greatly increased. If the clearance is too large, the sliding friction is small, but the sealing performance is deteriorated. The arrangement of the gap difference can not only ensure the sealing performance to the lubricating oil, but also keep the sliding friction force within a small range, so that the valve 11 can smoothly slide relative to the side wall of the valve cavity 13.
A spring 12 is arranged between the side wall of the left end of the valve cavity 13 and the valve 11, and the valve 11 is positioned on the right side of the oil outlet 21 under the relaxation state of the spring 12; in the oil-through state, the spring 12 is compressed and the valve 11 is positioned at the left side of the oil outlet hole 21;
the side wall of the valve cavity 13 at the oil inlet 14 is radially contracted to form a closing-in part 15 for preventing the valve 11 from being disengaged.
The closing-up part 15 is very simple and convenient to manufacture, and the closing-up part 15 can be conveniently manufactured by extruding the closing-up part through a pneumatic cylinder or rotating and pressing the closing-up part on a lathe.
And the side wall of the left end of the valve cavity 13 is provided with an air vent 16 which is communicated with the inside and the outside.
The air vent 16 is arranged, so that the gas in the valve cavity 13 on the left side of the valve 11 can be prevented from being compressed during oil inlet, and the resistance formed by air pressure is eliminated. If the air vent hole 16 is not provided, the length of the valve chamber 13 on the left side of the oil outlet hole 21 can be appropriately shortened, and the spring force of the spring 12 can be appropriately reduced.
The left end of the valve seat 10 is provided with an expanding diameter part 17, and the section of the valve seat 10 is T-shaped in the direction of passing through the axis 18 of the valve seat 10.
This shape of the valve seat 10 greatly facilitates its assembly in the place of use by means of an integral T-shaped structure.
In the direction perpendicular to the axis 18 of the valve seat 10, the cross-sectional profile of the diameter-expanding part 17 of the valve seat is hexagonal, and the cross-sectional profile of the valve seat 10 at the right of the diameter-expanding part 17 is circular; the outer surface of the right part of the valve seat 10 is provided with an external thread 19.
The arrangement of the external thread 19 can be conveniently used in the installation hole of the utility model on the required equipment. Of course, the utility model is convenient to be removed in a rotating way.
The left end and the right end of the valve seat 10 are both provided with a chamfer structure 20.
The setting of chamfer structure 20 can get rid of the burr that produces because of machining on the valve seat 10 on the one hand, and on the other hand is also convenient with the utility model discloses the assembly is in use occasions such as motor vehicle or lathe.
Both ends of the shutter 11 may be closed, but this increases material costs. If both ends are open, the function of one-way conduction cannot be achieved. Therefore, one end of the shutter 11 is closed, so that the material can be saved to the greatest extent while the unidirectional conduction function is achieved, and the spring 12 is allowed to extend into the cylinder of the shutter 11, so that the matching between the spring 12 and the shutter 11 is more stable.
During operation, the utility model discloses the series assembly is on the lubricating oil way of equipment such as motor vehicle or lathe. When there is not the oil pressure in the lubricated oil circuit and the oil pressure of fluid exit 21 is higher than the oil pressure of fluid import 14, under the spring action of spring 12 and the oil pressure effect, valve 11 slides to the right side of fluid exit 21 to make fluid exit 21 keep apart with fluid import 14, prevent fluid refluence.
When need normally pass through fluid, the oil pressure of 14 departments of fluid import is higher than the oil pressure that fluid bored 21 departments, and valve 11 compression spring 12 left and move to the left side that fluid bored 21 under the effect of oil pressure, makes fluid bore 21 and fluid import 14 switch on each other through valve chamber 13 to make lubricating oil normally pass through the utility model discloses the valve chamber is closed to the oil pressure is closed to.
The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.
Claims (5)
1. Simple structure's check valve, including valve seat, valve and spring, its characterized in that: a valve cavity is arranged in the valve seat, an oil outlet hole is arranged in the valve seat in the middle of the valve cavity, and the oil outlet hole is communicated with the valve cavity;
the right end of the valve cavity is provided with an oil inlet, the valve is arranged in the valve cavity and is in a cylinder shape with at least one closed end; the outer diameter of the valve is 0.02-0.04 mm smaller than the inner diameter of the valve cavity, and the valve is in sliding sealing fit with the inner wall of the valve cavity;
a spring is arranged between the side wall at the left end of the valve cavity and the valve, and the valve is positioned on the right side of the oil outlet hole in the relaxation state of the spring; the spring is compressed and the valve is positioned on the left side of the oil outlet hole in the oil passing state;
and the side wall of the valve cavity at the oil inlet radially shrinks to form a closing part for preventing the valve from being separated.
2. A check valve of simple structure as claimed in claim 1, wherein: and the side wall of the left end of the valve cavity is provided with an air hole which is communicated with the inside and the outside.
3. A check valve of simple structure according to claim 1 or 2, characterized in that: the left end part of the valve seat is provided with an expanding part, and the section of the valve seat is T-shaped in the direction passing through the axis of the valve seat.
4. A check valve of simple structure as set forth in claim 3, characterized in that: in the direction perpendicular to the axis of the valve seat, the cross section contour of the diameter expanding part of the valve seat is hexagonal, and the cross section contour of the valve seat at the right side of the diameter expanding part is circular; the outer surface of the right part of the valve seat is provided with an external thread.
5. A check valve of simple structure as set forth in claim 3, characterized in that: the left end and the right end of the valve seat are both provided with chamfer structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020362875.7U CN211975984U (en) | 2020-03-20 | 2020-03-20 | One-way valve with simple structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020362875.7U CN211975984U (en) | 2020-03-20 | 2020-03-20 | One-way valve with simple structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211975984U true CN211975984U (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020362875.7U Active CN211975984U (en) | 2020-03-20 | 2020-03-20 | One-way valve with simple structure |
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| Country | Link |
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| CN (1) | CN211975984U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728207A (en) * | 2020-12-30 | 2021-04-30 | 中国航发长春控制科技有限公司 | Two-body type press-fitting valve seat assembly |
-
2020
- 2020-03-20 CN CN202020362875.7U patent/CN211975984U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728207A (en) * | 2020-12-30 | 2021-04-30 | 中国航发长春控制科技有限公司 | Two-body type press-fitting valve seat assembly |
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