CN219865685U - Overflow valve with antifriction positioning function - Google Patents
Overflow valve with antifriction positioning function Download PDFInfo
- Publication number
- CN219865685U CN219865685U CN202321015109.3U CN202321015109U CN219865685U CN 219865685 U CN219865685 U CN 219865685U CN 202321015109 U CN202321015109 U CN 202321015109U CN 219865685 U CN219865685 U CN 219865685U
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- Prior art keywords
- valve
- adjusting
- connecting rod
- adjusting screw
- antifriction
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- 230000007704 transition Effects 0.000 claims abstract description 9
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model provides an overflow valve with antifriction positioning function, which comprises a valve body, a valve seat, a valve core, a connecting rod and an adjusting screw; an adjusting screw is inserted into the inner side of the upper end of the valve body; the lower end of the adjusting screw is provided with an adjusting cylinder body, two sides of the adjusting cylinder body are symmetrically provided with adjusting grooves which penetrate through the adjusting cylinder body, and the connecting rod is in transition fit connection with the adjusting grooves which are symmetrically arranged on two sides of the adjusting cylinder body through a locating pin; the lower extreme of connecting rod is provided with the case, and the lower extreme of case inserts in the disk seat. The positioning pin is connected with the connecting rod through transition fit, when the overflow valve overflows, the valve core, the connecting rod and the positioning pin are pushed by pressure to move together, the stroke of the positioning pin is shortened through transition fit improvement, friction caused by eccentricity is reduced, and the overflow response speed is improved; according to the utility model, the spring seat moves in the longitudinal direction through the positioning ball and the positioning groove, and the contact surface of the spring seat and the valve body is of an arc-shaped surface structure, so that the friction force is reduced; the overflow response is responsive to rapid countering of load changes.
Description
Technical Field
The utility model relates to the technical field of overflow valves, in particular to an overflow valve with antifriction positioning function.
Background
Relief valves are very important elements in hydraulic systems, which, mainly by relief, keep the pressure of the system constant or prevent overload of the system.
Because the overflow valve has the problems of overlarge friction force at a plurality of positions and design problems, the overflow valve has the problems of low opening rate and closing rate, low response speed and difficult adjustment of the set pressure by the adjusting screw after being assembled.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the overflow valve with the antifriction positioning function, and the overflow valve can realize the effects of enhancing the positioning capability and reducing the friction force, thereby achieving the effect of improving the performance of the overflow valve.
The technical scheme of the utility model is as follows: an overflow valve with antifriction positioning function comprises a valve body, a valve seat, a valve core, a connecting rod, a positioning pin and an adjusting screw; the inner side of the upper end of the valve body is inserted with an adjusting screw, and the adjusting screw is fixed through machine screws arranged on two sides of the valve body;
the lower end of the adjusting screw is provided with an adjusting cylinder body, two sides of the adjusting cylinder body are symmetrically provided with through adjusting grooves, and the connecting rod is in transition fit connection with the adjusting grooves symmetrically arranged on two sides of the adjusting cylinder body through a locating pin; the lower end of the connecting rod is provided with a valve core, and the lower end of the valve core is inserted into the valve seat.
Preferably, the middle part of the adjusting screw is also provided with an O-shaped ring groove, and an O-shaped ring is sleeved in the O-shaped ring groove.
Preferably, the cylinder body of the adjusting screw is of a hollow structure with an opening at the lower end, and the upper end of the connecting rod is inserted into the cylinder body and is connected with the adjusting grooves symmetrically arranged on two sides of the adjusting cylinder body through the positioning pin.
Preferably, the valve core is further connected with a spring seat in a threaded manner.
Preferably, a first spring is sleeved on the valve core between the spring seat and the valve seat.
Preferably, a second spring is sleeved on the valve core between the spring seat and the connecting rod.
Preferably, the diameter of the first spring is larger than that of the second spring.
Preferably, the spring seat is further provided with a positioning ball, and the positioning ball is matched with a vertical positioning groove formed in the inner side of the lower end of the valve body.
Preferably, the contact surface of the spring seat and the valve body is of an arc-shaped surface structure.
Preferably, a zinc-nickel layer is electroplated on the inner side surface of the valve body, which is contacted with the spring seat, and the surface roughness of the zinc-nickel layer is 0.8.
Preferably, the diameter of the position on the adjusting screw, which is matched with the machine screw, is smaller than the diameter of the position above and below the adjusting screw.
The beneficial effects of the utility model are as follows:
1. the positioning pin is connected with the connecting rod through transition fit, when the overflow valve overflows, the valve core, the connecting rod and the positioning pin are pushed to move together by pressure, the stroke of the positioning pin is shortened through transition fit improvement, the positioning pin is rapid in installation, friction caused by eccentricity is reduced, and the overflow response speed is improved; meanwhile, the adjusting screw is used for adjusting the set pressure through the connecting rod, the valve core and the spring seat in linkage through the locating pin, and the friction force and the force required by the inner hexagonal hole are reduced through transition fit;
2. according to the utility model, the spring seat moves in the longitudinal direction through the positioning ball and the positioning groove, and the contact surface of the spring seat and the valve body is of an arc-shaped surface structure, so that the friction force is reduced; the overflow response is responsive to rapid countering of load changes.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the valve body of the present utility model;
FIG. 3 is a schematic view of the structure of the present utility model after hiding the valve body;
FIG. 4 is a schematic view of the structure of the adjusting screw of the present utility model;
FIG. 5 is a schematic view of the contact surface structure between the spring seat and the valve body according to the present utility model;
in the figure, 1-valve body; 2-valve seat; 3-valve core; 4-connecting rods; 5-locating pins; 6-adjusting the screw; 7-machine rice screws; 8-adjusting cylinder, 9-adjusting groove, 10-O-shaped ring groove and 11-O-shaped ring;
12-spring seat; 13-a first spring; 14-a second spring; 15-positioning balls; 16-positioning grooves; 17-contact surface;
Detailed Description
The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:
as shown in fig. 1 and 3, the embodiment provides an overflow valve with antifriction positioning function, which comprises a valve body 1, a valve seat 2, a valve core 3, a connecting rod 4, a positioning pin 5 and an adjusting screw 5; the inner side of the upper end of the valve body 1 is inserted with an adjusting screw 5, and the adjusting screw 5 is fixed by machine screws 7 arranged on two sides of the valve body 1;
as shown in fig. 3 and 4, the lower end of the adjusting screw 5 is provided with an adjusting cylinder 8, two sides of the adjusting cylinder 8 are symmetrically provided with through adjusting grooves 9, and the connecting rod 4 is in transition fit connection with the adjusting grooves 9 symmetrically arranged on two sides of the adjusting cylinder 8 through the positioning pin 5; the lower end of the connecting rod 4 is provided with a valve core 3, and the lower end of the valve core 3 is inserted into the valve seat 2.
As shown in fig. 3, the middle part of the adjusting screw 5 is also provided with an O-ring groove 10, and the O-ring groove 10 is sleeved with an O-ring 11.
As shown in fig. 4, the adjusting cylinder 8 of the adjusting screw 5 is preferably a hollow structure with an opening at the lower end, and the upper end of the connecting rod 4 is inserted into the adjusting cylinder 8 and is connected with the adjusting grooves 9 symmetrically arranged on both sides of the adjusting cylinder 8 through the positioning pin 5.
As shown in fig. 3, the valve core 3 is preferably further screwed with a spring seat 12.
As shown in fig. 3, the valve core 3 between the spring seat 12 and the valve seat 2 is preferably further sleeved with a first spring 13.
As shown in fig. 3, the valve core 3 between the spring seat 12 and the connecting rod 4 is preferably further sleeved with a second spring 14.
As a preferred embodiment, as shown in fig. 3, the diameter of the first spring 13 is larger than that of the second spring 14.
As shown in fig. 3, the spring seat 12 is further provided with a positioning ball 15, and the positioning ball 15 is matched with a vertical positioning groove 16 formed on the inner side of the lower end of the valve body 1. In this embodiment, the positioning slot 16 is disposed at a position shown in fig. 2.
As shown in fig. 5, the contact surface 17 between the spring seat 12 and the valve body 1 is an arc-shaped surface structure; the inner side surface of the valve body 1, which is in contact with the spring seat 12, is electroplated with a zinc-nickel layer, and the surface roughness of the zinc-nickel layer is 0.8.
Preferably, the diameter of the position of the adjusting screw 5 matched with the machine screw is smaller than that of the position above and below the adjusting screw 5.
The foregoing embodiments and description have been provided merely to illustrate the principles and best modes of carrying out the utility model, and various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. An overflow valve with antifriction locate function, its characterized in that: the valve comprises a valve body (1), a valve seat (2), a valve core (3), a connecting rod (4), a locating pin (5) and an adjusting screw (6); an adjusting screw (6) is inserted into the inner side of the upper end of the valve body (1), and the adjusting screw (6) is fixed through machine screws (7) arranged on two sides of the valve body (1);
the lower end of the adjusting screw (6) is provided with an adjusting cylinder body (8), two sides of the adjusting cylinder body (8) are symmetrically provided with through adjusting grooves (9), and the connecting rod (4) is in transition fit connection with the adjusting grooves (9) symmetrically arranged on two sides of the adjusting cylinder body (8) through the locating pin (5); the lower end of the connecting rod (4) is provided with a valve core (3), and the lower end of the valve core (3) is inserted into the valve seat (2).
2. An overflow valve with antifriction positioning function according to claim 1 characterized in that: the middle part of the adjusting screw (6) is also provided with an O-shaped ring groove (10), and an O-shaped ring (11) is sleeved in the O-shaped ring groove (10).
3. An overflow valve with antifriction positioning function according to claim 2, characterized in that: the adjusting cylinder body (8) of the adjusting screw (6) is of a hollow structure with an opening at the lower end, and the upper end of the connecting rod (4) is inserted into the adjusting cylinder body (8) and is connected with adjusting grooves (9) symmetrically arranged on two sides of the adjusting cylinder body (8) through positioning pins (5).
4. An overflow valve with antifriction positioning function according to claim 1 characterized in that: the valve core (3) is also connected with a spring seat (12) in a threaded manner.
5. An overflow valve with antifriction positioning function according to claim 4 characterized in that: the valve core (3) between the spring seat (12) and the valve seat (2) is also sleeved with a first spring (13).
6. An overflow valve with antifriction positioning function according to claim 5 characterized in that: a second spring (14) is sleeved on the valve core (3) between the spring seat (12) and the connecting rod (4).
7. An overflow valve with antifriction positioning function according to claim 6 characterized in that: the diameter of the first spring (13) is larger than that of the second spring (14).
8. An overflow valve with antifriction positioning function according to claim 6 characterized in that: the spring seat (12) is also provided with a positioning ball (15), and the positioning ball (15) is matched with a vertical positioning groove (16) formed in the inner side of the lower end of the valve body (1).
9. An overflow valve with antifriction positioning function according to claim 8 characterized in that: the contact surface of the spring seat (12) and the valve body (1) is of an arc-shaped surface structure; the inner side surface of the valve body (1) contacted with the spring seat (12) is electroplated with a zinc-nickel layer, and the surface roughness of the zinc-nickel layer is 0.8.
10. An overflow valve with antifriction positioning function according to claim 1 characterized in that: the diameter of the position, matched with the machine screw, of the adjusting screw (6) is smaller than that of the position, above and below the adjusting screw (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321015109.3U CN219865685U (en) | 2023-04-28 | 2023-04-28 | Overflow valve with antifriction positioning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321015109.3U CN219865685U (en) | 2023-04-28 | 2023-04-28 | Overflow valve with antifriction positioning function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219865685U true CN219865685U (en) | 2023-10-20 |
Family
ID=88331714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321015109.3U Active CN219865685U (en) | 2023-04-28 | 2023-04-28 | Overflow valve with antifriction positioning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219865685U (en) |
-
2023
- 2023-04-28 CN CN202321015109.3U patent/CN219865685U/en active Active
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