CN212536292U - Oil supplementing valve of hydraulic system of heading machine - Google Patents
Oil supplementing valve of hydraulic system of heading machine Download PDFInfo
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- CN212536292U CN212536292U CN202021006914.6U CN202021006914U CN212536292U CN 212536292 U CN212536292 U CN 212536292U CN 202021006914 U CN202021006914 U CN 202021006914U CN 212536292 U CN212536292 U CN 212536292U
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Abstract
The utility model discloses an oil replenishing valve of a hydraulic system of a heading machine, which is characterized by comprising a valve body, wherein a first cavity is arranged in the valve body along the axial direction, and a second cavity communicated with the first cavity is arranged in the valve body along the radial direction; the valve core is provided with a third cavity along the axial direction, the third cavity is composed of a contraction section, a throat part and a diffusion section, the valve core is coaxially arranged in the first cavity, a port of the contraction section is located at the oil inlet end of the first cavity, a port of the diffusion section is located on one side, close to the oil inlet end of the first cavity, of the center line of the second cavity, and the maximum diameter of the third cavity is smaller than the minimum diameter of the first cavity.
Description
Technical Field
The utility model relates to a hydraulic pressure field, concretely relates to entry driving machine hydraulic system's oil supplementing valve.
Background
The heading machine actions including walking, one-time moving, star wheel, oil cylinder and the like are all driven by a hydraulic system. When the hydraulic system works, due to the situation of oil leakage or seepage, external hydraulic oil is often needed to be supplemented into the hydraulic system to offset the loss.
In the past, when the oil supplementing operation is carried out on a hydraulic system, two main modes are adopted:
the first mode is a manually operated direct refueling mode. However, the method is time-consuming and labor-consuming, and oil pollution is easily caused when hydraulic oil is filled manually.
The second mode is a pneumatic diaphragm oil pump mode. This approach also has the disadvantage of requiring, firstly, a separate wind source and, secondly, a large size and space-consuming mounting arrangement. Above all, the mode has high purchase price and inconvenient installation and maintenance.
In view of the above situation, a simple and effective oil replenishing device for a hydraulic system is urgently needed to solve the problem.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a heading machine hydraulic system's oil supplementing valve realizes low-cost, easy operation, pollution-free automatic oil supplementing function of heading machine.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an oil supplementing valve of a hydraulic system of a heading machine is characterized by comprising,
the valve body is internally provided with a first cavity along the axial direction and a second cavity communicated with the first cavity along the radial direction;
the valve core is provided with a third cavity along the axial direction, the third cavity is composed of a contraction section, a throat part and a diffusion section, the valve core is coaxially arranged in the first cavity, a port of the contraction section is located at the oil inlet end of the first cavity, a port of the diffusion section is located on one side, close to the oil inlet end of the first cavity, of the center line of the second cavity, and the maximum diameter of the third cavity is smaller than the minimum diameter of the first cavity.
Further, the maximum diameter of the convergent section and the divergent section cavity is the same.
Furthermore, the first cavity is provided with a first threaded connector at the oil inlet end and a second threaded connector at the oil outlet end, and the second cavity forms a third threaded connector on the valve body.
The joint seat is coaxially inserted into the valve body from the oil outlet end of the first cavity and fixedly connected with the second threaded interface through threads, a fourth cavity is axially arranged on the joint seat, and the diameter of the fourth cavity is larger than the maximum diameter of the diffusion section;
the boss is axially fixed on the circumference of the diffusion section of the valve core, and the end part of the joint seat inserted into the valve body abuts against the boss.
Furthermore, an O-shaped ring is arranged between the outer surface of the valve core and the inner surface of the first cavity.
Furthermore, a gasket is arranged between the joint seat and the binding surface of the valve body.
Furthermore, the number of the bosses is two, and the bosses are uniformly distributed on the circumference of the diffusion section.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: the oil supplementing valve is provided with the valve core consisting of the contraction section, the throat part and the diffusion section, utilizes the Venturi tube principle to supplement oil, and is low in cost, easy to operate and free of pollution. The principle of the venturi effect is to make the fluid flow cross section from thick to thin to accelerate the fluid flow rate, when the fluid flows through the obstacle, the air pressure near the back side port of the obstacle is relatively low, so that the fluid forms a "vacuum" area at the back side of the venturi outlet, and the fluid can generate adsorption to the normal pressure fluid near the vacuum area, thereby generating adsorption and causing the fluid to flow.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic view of the explosion structure of the present invention;
fig. 3 is a schematic diagram of the structure of the valve body connected to the actual oil passage.
Detailed Description
As shown in fig. 1 and 2, the oil compensating valve of the hydraulic system of the heading machine of the present invention comprises a valve body 100, wherein a first cavity 101 is axially arranged in the valve body 10, and a second cavity 102 communicated with the first cavity 101 is radially arranged;
the valve core 20 is provided with a third cavity 201 along the axial direction, the third cavity 201 is composed of a contraction section 2011, a throat 2012 and a diffusion section 2013, the valve core 20 is coaxially arranged in the first cavity 101, a port of the contraction section 2011 is located at the oil inlet end of the first cavity 101, a port of the diffusion section 2013 is located on one side, close to the oil inlet end of the first cavity 101, of the center line of the second cavity 102, and the maximum diameter of the third cavity 201 is smaller than the minimum diameter of the first cavity 101.
Specifically, by arranging the valve core with the contraction section 2011, the throat 2012 and the diffusion section 2013 in the valve body 100, when high-pressure oil is input from the oil inlet end of the first cavity 101, the high-pressure oil enters from the contraction section 2011 of the valve core, enters the throat 2012 again, is further increased in pressure, is sprayed out from the diffusion section 2013, and oil is supplemented from the second cavity 102 by utilizing the principle of a venturi tube.
Preferably, the constriction 2011 has the same maximum diameter as the lumen of the diffuser 2013.
Preferably, the first cavity 101 is provided with a first threaded interface 1011 at the oil inlet end and a second threaded interface 1012 at the oil outlet end, and the second cavity 102 forms a third threaded interface 1021 on the valve body 10. The valve body is convenient to be connected with a related hydraulic element through the second threaded interface 1012 and the third threaded interface 1021.
Preferably, the joint base 30 is further included, the joint base 30 is coaxially inserted into the valve body 10 from the oil outlet end of the first cavity 101 and is fixedly connected with the second threaded interface 1012 in a threaded manner, the joint base 30 is axially provided with a fourth cavity 301, and the diameter of the fourth cavity 301 is larger than the maximum diameter of the diffuser 2013;
and the boss 202 is axially fixed on the circumference of the diverging section 2013 of the valve core 20, and the end of the joint seat 30 inserted into the valve body 10 abuts against the boss 202.
The joint seat 30 is arranged to be in threaded connection with the second threaded interface through the joint seat 30 and then to extrude the boss 202 to fix the valve core 20 in the first cavity 101, and when oil is replenished, oil enters from a gap between the joint seat 30 and the valve core 20.
Preferably, an O-ring is disposed between the outer surface of the valve core 20 and the inner surface of the first cavity 101. The O-ring can prevent the gap between the valve core 20 and the first cavity 101 from reducing the suction force for sucking oil.
Preferably, a gasket 40 is disposed between the joint seat 30 and the abutting surface of the valve body 10. The joint base 30 is better fixed with the valve body 10 by arranging the gasket 40.
Preferably, there are two of the bosses 202, which are uniformly distributed on the circumference of the diffuser section 2013. The force applied when the valve core 20 is pressed by the joint seat 30 can be more uniform.
As shown in fig. 3, when the hydraulic system requires an oil replenishment operation: the first step is as follows: the interior of an oil supplementing pipe communicated with the oil barrel 12 is soaked with oil; opening the ball valve 11, and then switching the three-way ball valve 9 to guide the high-pressure pipeline in the original motor loop to the oil replenishing valve 1; the reversing valve 8 is manually switched to the side of the three-way ball valve 9 of the working high-pressure pipeline, at the moment, high-pressure high-flow-rate working oil is guided to the oil supplementing valve 1 through the three-way ball valve 9, at the moment, the hydraulic oil in the oil barrel 12 is sucked into an oil supplementing loop through the Venturi management action principle of the oil supplementing valve 1, and the hydraulic oil is added into the oil tank through the oil return filter 14. At this point, the oil replenishment operation is completed.
When oil supplement is not needed, the original host can work normally only by operating reversely according to the operation.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. An oil supplementing valve of a hydraulic system of a heading machine is characterized by comprising,
the valve comprises a valve body (10), wherein a first cavity (101) is arranged in the valve body (10) along the axial direction, and a second cavity (102) communicated with the first cavity (101) is arranged in the radial direction;
the valve core (20), the valve core (20) is provided with a third cavity (201) along the axial direction, the third cavity (201) is composed of a contraction section (2011), a throat (2012) and a diffusion section (2013), the valve core (20) is coaxially arranged in the first cavity (101), a port of the contraction section (2011) is located at an oil inlet end of the first cavity (101), a port of the diffusion section (2013) is located on one side, close to the oil inlet end of the first cavity (101), of a center line of the second cavity (102), and the maximum diameter of the third cavity (201) is smaller than the minimum diameter of the first cavity (101).
2. The oil replenishment valve of a hydraulic system of a heading machine according to claim 1 wherein the maximum diameter of the cavity of the convergent section (2011) and the divergent section (2013) are the same.
3. The oil replenishing valve of a hydraulic system of a heading machine according to claim 1, wherein the first cavity (101) is provided with a first threaded connector (1011) at an oil inlet end and a second threaded connector (1012) at an oil outlet end, and the second cavity (102) forms a third threaded connector (1021) on the valve body (10).
4. The oil replenishing valve of the hydraulic system of the heading machine according to claim 3, further comprising a joint seat (30), wherein the joint seat (30) is coaxially inserted into the valve body (10) from the oil outlet end of the first cavity (101) and is fixedly connected with the thread of the second threaded connector (1012), the joint seat (30) is provided with a fourth cavity (301) along the axial direction, and the diameter of the fourth cavity (301) is larger than the maximum diameter of the diffuser section (2013);
the boss (202) is axially fixed on the circumference of the diffusion section (2013) of the valve core (20), and the end part of the joint seat (30) inserted into the valve body (10) is abutted against the boss (202).
5. The oil replenishing valve of a hydraulic system of a heading machine according to claim 3, wherein an O-shaped ring (203) is arranged between the outer surface of the valve core (20) and the inner surface of the first cavity (101).
6. The oil replenishing valve of a hydraulic system of a heading machine according to claim 4, wherein a gasket (40) is provided between the joint seat (30) and the abutting surface of the valve body (10).
7. The oil replenishing valve of a hydraulic system of a heading machine as claimed in claim 4, wherein the two bosses (202) are uniformly distributed on the circumference of the diffuser section (2013).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021006914.6U CN212536292U (en) | 2020-06-04 | 2020-06-04 | Oil supplementing valve of hydraulic system of heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021006914.6U CN212536292U (en) | 2020-06-04 | 2020-06-04 | Oil supplementing valve of hydraulic system of heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212536292U true CN212536292U (en) | 2021-02-12 |
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ID=74638846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021006914.6U Active CN212536292U (en) | 2020-06-04 | 2020-06-04 | Oil supplementing valve of hydraulic system of heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212536292U (en) |
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2020
- 2020-06-04 CN CN202021006914.6U patent/CN212536292U/en active Active
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