CN111946685A - Structure of direct-acting overload oil replenishing valve - Google Patents
Structure of direct-acting overload oil replenishing valve Download PDFInfo
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- CN111946685A CN111946685A CN202010799063.3A CN202010799063A CN111946685A CN 111946685 A CN111946685 A CN 111946685A CN 202010799063 A CN202010799063 A CN 202010799063A CN 111946685 A CN111946685 A CN 111946685A
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- Prior art keywords
- oil
- wall
- valve core
- valve
- valve body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/024—Pressure relief valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/026—Pressure compensating valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to the technical field of overload oil compensating valves, in particular to a structure of a direct-acting overload oil compensating valve, which comprises an oil compensating valve body, wherein the right side end part of the oil compensating valve body is provided with an oil inlet, the outer wall of the oil compensating valve body is provided with an oil return opening at a position close to the oil inlet, the left side inner wall of the oil compensating valve body is provided with an oil compensating valve cover, the middle part of the right side of the oil compensating valve cover is provided with a spring mounting groove, the inner wall of the spring mounting groove is provided with a hard spring, the left side end part of the oil compensating valve core is provided with a valve core seat, the left side outer wall of the oil compensating valve core is sleeved with a soft spring, the integral structure ensures that the device can realize the function of overflowing from the oil inlet to the oil outlet when the pressure of the oil inlet is greater than the set stress of the hard spring, and the oil outlet, and the stability and the practicability are higher, the method is suitable for the actual situation, and has certain popularization value.
Description
Technical Field
The invention relates to the technical field of overload oil compensating valves, in particular to a structure of a direct-acting overload oil compensating valve.
Background
The overload oil compensating valve is also called a one-way overflow valve, is applied to supporting legs in machinery such as mines, engineering, cranes, ports and the like, and hydraulic systems such as cranes, development machines, loaders and the like of telescopic automatic equal-load oil cylinders, and can prevent the rodless cavity from being overloaded when a piston rod is subjected to thrust; when the piston rod is pulled, reverse liquid flow can pass through the piston rod with small pressure difference so as to avoid vacuum in a rodless cavity, and most of the prior direct-acting overload oil compensating valves are of plug-in structures.
The prior overload oil-supplementing valve is usually matched with a multi-way valve for use, because the prior overload oil-supplementing valve needs to perform the overflow function and perform the one-way oil-supplementing function, the prior overload oil-supplementing valve is not suitable for practical situations, and a structure of a direct-acting overload oil-supplementing valve is needed to improve the problems.
Disclosure of Invention
The present invention is directed to a structure of a direct-acting overload oil compensating valve, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a structure of direct action formula overload oil compensating valve, includes the oil compensating valve body, the oil inlet has been seted up to the right side tip of oil compensating valve body, the oil return opening has been seted up to the outer wall of oil compensating valve body and the position that is close to the oil inlet, the oil compensating valve gap is installed to the left side inner wall of oil compensating valve body, the spring mounting groove has been seted up to the department in the middle of the right side of oil compensating valve gap, hard spring is installed to the inner wall of spring mounting groove, the main valve core is installed to the right side inner wall of oil compensating valve body, the oil compensating case is installed to the inner wall of main valve core, the case seat is installed to the left side tip of oil compensating case.
Preferably, a valve cover adjusting nut is in threaded connection with the outer wall of the valve cover of the oil replenishing valve and the connection part of the valve cover and the valve body of the oil replenishing valve.
Preferably, the inner wall of the oil replenishing valve body is provided with a sealing ring installation groove, and a valve body sealing ring is installed on the inner wall of the sealing ring installation groove.
Preferably, a through hole is formed in the right side of the main valve element and in a position corresponding to the oil inlet, and a sealing ring is mounted on the outer wall of the main valve element and on the right side of the through hole.
Preferably, the main valve core is connected with the oil supplementing valve body in a sliding manner, and the oil supplementing valve core is connected with the soft spring and the main valve core in a sliding manner.
Preferably, the soft spring is located between the valve core seat and the main valve core and is in contact with the valve core seat and the main valve core.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the arranged integral structure, the overflow function from the oil inlet to the oil outlet can be realized when the pressure of the oil inlet is greater than the set stress of the hard spring, and the one-way oil supplementing function from the oil outlet to the oil inlet is realized when the pressure of the oil inlet is lost, so that the device is more suitable for actual conditions.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is a schematic diagram of the structure of the overflow function of the direct-acting overload oil-replenishing valve in the initial state;
FIG. 3 is a structural diagram illustrating the completion state of the overflow function of the direct-acting overload oil-replenishing valve according to the present invention;
FIG. 4 is a structural diagram of the one-way oil-replenishing function of the direct-acting overload oil-replenishing valve in an initial state;
FIG. 5 is a schematic view of the structure of the one-way oil-replenishing function of the direct-acting overload oil-replenishing valve according to the present invention
FIG. 6 is a schematic diagram of a hydraulic structure of an original direct-acting type overload oil compensating valve;
FIG. 7 is a schematic cross-sectional view of an original direct-acting type overload oil compensating valve according to the present invention
In the figure: 1-oil supply valve body, 2-oil inlet, 3-oil return port, 4-oil supply valve cover, 5-spring mounting groove, 6-hard spring, 7-main valve core, 8-oil supply valve core, 9-valve core seat and 10-soft spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution:
a structure of a direct-acting overload oil replenishing valve comprises an oil replenishing valve body 1, an oil inlet 2 is arranged at the right side end part of the oil replenishing valve body 1, an oil return port 3 is arranged at the position, close to the oil inlet 2, of the outer wall of the oil replenishing valve body 1, an oil replenishing valve cover 4 is arranged on the left side inner wall of the oil replenishing valve body 1, a spring mounting groove 5 is arranged in the middle of the right side of the oil replenishing valve cover 4, a hard spring 6 is arranged on the inner wall of the spring mounting groove 5, a main valve core 7 is arranged on the right side inner wall of the oil replenishing valve body 1, an oil replenishing valve core 8 is arranged on the inner wall of the main valve core 7, a valve core seat 9 is arranged at the left side end part of the oil replenishing valve core 8, a soft spring 10 is sleeved on the left side outer wall of the oil replenishing valve core 8, a valve cover adjusting nut is in threaded connection with the outer wall, and the valve body sealing washer is installed to the inner wall of sealing washer mounting groove, the right side of main valve element 7 and the position that corresponds with oil inlet 2 have seted up the through-hole, the outer wall of main valve element 7 and the right side that is located the through-hole install the sealing washer, the connected mode of main valve element 7 and oil supplementing valve body 1 is sliding connection, oil supplementing valve core 8 and soft spring 10, the connected mode between main valve element 7 is sliding connection, soft spring 10 is located between valve core seat 9 and main valve element 7, and with valve core seat 9, main valve element 7 contacts, overall structure makes this device can realize when the pressure of oil inlet 2 is greater than the stress that hard spring 6 set for that oil inlet 2 plays the overflow function to oil-out 3, when oil inlet 2 loses pressure, oil-out 3 plays one-way oil supplementing function to oil inlet 2, thereby make this device more be applicable.
The working process of the invention is as follows: when in use, the overflow function is as follows: main valve element 7 is pressed on oil supplementing valve body 1 by hard spring 6, oil supplementing valve element 8 is pushed down to the fluid of oil inlet 2, through the hole of oil supplementing valve body 1, reach the annular chamber, it is sealed, the oil pressure is used in on the annular area of main valve element 7, as figure 2, when the oil pressure is greater than the precompression power of hard spring 6, fluid will promote main valve element 7 compression hard spring 6 and open, fluid flows to oil return opening 3 from oil inlet 2 as the direction that figure 2 shows, play the overflow function, overall structure makes this device can realize that oil inlet 2 plays the overflow function to oil return opening 3 when the pressure of oil inlet 2 is greater than the stress that hard spring 6 set for, one-way oil supplementing function: the main valve core 7 is pressed on the oil supplementing valve body 1 by the hard spring 6, the oil supplementing valve core 8 is pressed on the oil supplementing valve body 1 by the soft spring 10, the oil liquid of the oil return port 3 passes through the inner hole of the oil supplementing valve body 1, the inner hole of the main valve core 7, the clearance between the main valve core 7 and the oil supplementing valve core 8 to reach the left side of the main valve core 7, the main valve core 7 is pressed on the oil supplementing valve body 1 together with the hard spring 6, the oil liquid at the right is sealed by the line contact of the oil supplementing valve core 8 and the oil supplementing valve body 1, as shown in figure 4, when the oil pressure is larger than the precompression force of the soft spring 10, the oil liquid pushes the oil supplementing valve core 8 to compress the soft spring 10 to move rightwards, the oil liquid flows from the oil return port 3 to the oil inlet 2 with small pressure difference in the direction shown in figure 5 to play a one-way oil supplementing function, when the oil inlet 2 loses pressure, the oil return port 3 has a one-way oil supplementing function from the oil inlet 2, so that the device is more suitable for actual conditions.
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 (6)
1. The utility model provides a structure of direct action formula overload fuel feeding valve, includes fuel feeding valve body (1), its characterized in that: oil inlet (2) have been seted up to the right side tip of oil supply valve body (1), oil return opening (3) have been seted up to the outer wall of oil supply valve body (1) and the position that is close to oil inlet (2), oil supply valve gap (4) are installed to the left side inner wall of oil supply valve body (1), spring mounting groove (5) have been seted up to the department in the middle of the right side of oil supply valve gap (4), hard spring (6) are installed to the inner wall of spring mounting groove (5), main valve core (7) are installed to the right side inner wall of oil supply valve body (1), oil supply valve core (8) are installed to the inner wall of main valve core (7), valve core seat (9) are installed to the left side tip of oil supply valve core (8), soft spring (10) have been cup jointed to the left side outer.
2. The structure of a direct-acting overload oil compensating valve according to claim 1, wherein: and a valve cover adjusting nut is in threaded connection with the outer wall of the oil supplementing valve cover (4) and the joint of the oil supplementing valve cover and the oil supplementing valve body (1).
3. The structure of a direct-acting overload oil compensating valve according to claim 1, wherein: the inner wall of the oil replenishing valve body (1) is provided with a sealing ring mounting groove, and a valve body sealing ring is mounted on the inner wall of the sealing ring mounting groove.
4. The structure of a direct-acting overload oil compensating valve according to claim 1, wherein: the right side of the main valve core (7) and the position corresponding to the oil inlet (2) are provided with a through hole, and the outer wall of the main valve core (7) and the right side of the through hole are provided with a sealing ring.
5. The structure of a direct-acting overload oil compensating valve according to claim 1, wherein: the main valve core (7) is connected with the oil supplementing valve body (1) in a sliding mode, and the oil supplementing valve core (8) is connected with the soft spring (10) and the main valve core (7) in a sliding mode.
6. The structure of a direct-acting overload oil compensating valve according to claim 1, wherein: the soft spring (10) is positioned between the valve core seat (9) and the main valve core (7) and is in contact with the valve core seat (9) and the main valve core (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799063.3A CN111946685A (en) | 2020-08-11 | 2020-08-11 | Structure of direct-acting overload oil replenishing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799063.3A CN111946685A (en) | 2020-08-11 | 2020-08-11 | Structure of direct-acting overload oil replenishing valve |
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| Publication Number | Publication Date |
|---|---|
| CN111946685A true CN111946685A (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010799063.3A Pending CN111946685A (en) | 2020-08-11 | 2020-08-11 | Structure of direct-acting overload oil replenishing valve |
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| Country | Link |
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| CN (1) | CN111946685A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648251A (en) * | 2020-12-22 | 2021-04-13 | 天水锻压机床(集团)有限公司 | Automatic liquid supplementing hydraulic valve of energy accumulator for large-scale bending machine |
-
2020
- 2020-08-11 CN CN202010799063.3A patent/CN111946685A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648251A (en) * | 2020-12-22 | 2021-04-13 | 天水锻压机床(集团)有限公司 | Automatic liquid supplementing hydraulic valve of energy accumulator for large-scale bending machine |
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