A pressure increasing valve with oil injection structure

Abstract

The utility model belongs to the technical field of pressure increasing valve, concretely is a kind of pressure increasing valve with oil injection structure, including valve body, valve cover, first chamber and second chamber are by the isolation part in valve body, and isolation part is provided with pressure regulating mechanism, connecting rod, first piston and second piston are assembled in the both ends of connecting rod, isolation part is further equipped with air inlet and air outlet, oil injection port that is communicated with air inlet is provided on the isolation part, and quantitative check valve mechanism is assembled on oil injection port, including shell, limit protruding ring is equipped in shell inner wall, guide pin is slidably arranged in limit protruding ring, guide pin one end opens liquid groove, and the other end is equipped with taper block, limit protruding ring is opened with the taper bevel of taper block cooperation taper bevel, temporary storage chamber and release chamber are separated by fixed disc in shell, when taper block and taper bevel are separated, through groove is not connected two chambers, and through groove is connected two chambers when it is sealed, the structure can realize lubrication and pressure increasing cooperation, simplify system and reduce cost, accurate oil control and prevent backflow, prolong the life of pressure increasing valve.

Description

Technical Field

[0001] This utility model belongs to the field of pressure boosting valve technology, specifically a pressure boosting valve with an oil injection structure. Background Technology

[0002] A pressure booster valve is a device used to increase fluid pressure. It is widely used in industrial machinery, hydraulic systems, pneumatic devices and other fields. It can stabilize the output pressure, adapt to different working conditions, make up for insufficient initial pressure of the system, ensure that equipment that requires high pressure operates efficiently and reliably, and meet the pressure requirements of various production and equipment operations.

[0003] Existing booster valves mainly consist of the following parts: valve body, piston, pressure regulating components, etc. The working principle is: low-pressure fluid enters the valve body, pushes the small-area piston to move, and through the transmission of force, generates higher pressure at the connected large-area end, and finally delivers stable high-pressure fluid to downstream equipment to make up for the insufficient initial pressure of the system.

[0004] The existing booster valves have the following drawbacks: the oil injection structure of the booster valve is usually set independently of the intake system, and it is necessary to connect the oil injection component to the lubrication part inside the valve body through an additional external pipeline, which occupies a lot of space. In addition, the amount of lubricating oil released by the existing booster valve is uncontrollable, which can easily lead to insufficient or excessive lubrication. Therefore, a booster valve with an oil injection structure is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing booster valves, a booster valve with an oil injection structure is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The pressure booster valve with oil injection structure of this utility model includes a valve body and a valve cover. The valve body is provided with an isolation part, a first chamber and a pressure regulating mechanism. The isolation part is provided with an air inlet and an air outlet communicating with the first chamber and the pressure regulating mechanism chamber. The isolation part is provided with an oil injection port. The oil injection port replenishes lubricating oil into the first chamber through the airflow of the air inlet to lubricate the friction surface of the first piston inside and to lubricate the internal structure of the pressure regulating mechanism chamber.

[0007] Preferably, the valve body is further provided with a second chamber, one end of the air inlet is connected to the second chamber, and the lubricating oil carried by the air inlet enters the second chamber to lubricate the friction surface of the second piston inside.

[0008] Preferably, the oil inlet and the air inlet are positioned perpendicular to each other.

[0009] Preferably, the oil inlet is equipped with a metering check valve mechanism that can meterly add lubricating oil into the air inlet.

[0010] Preferably, the quantitative one-way valve mechanism includes a housing and an inlet and an outlet connected to the housing. A cone block is slidably provided inside the housing through a limiting convex ring. When the cone block disengages from the limiting convex ring, lubricating oil enters the temporary storage chamber and the temporary storage chamber is not connected to the release chamber. When the cone block is fitted and sealed with the conical bevel, the lubricating fluid in the temporary storage chamber flows to the release chamber.

[0011] The beneficial effects of this utility model are:

[0012] This utility model provides a booster valve with an oil injection structure. By setting an oil injection port in the isolation section that is directly connected to the air inlet, the lubricating oil is delivered by means of the gas flow power in the air inlet, so as to achieve the synergistic effect of lubrication and boosting. This greatly reduces the external pipeline connection of the valve body and improves the compactness of the structure. At the same time, it eliminates the need for an independent oil injection power device, simplifies the structure of the oil injection system and reduces equipment costs.

[0013] The quantitative check valve mechanism installed at the oil inlet can precisely control the amount of lubricating oil released, avoiding insufficient or excessive lubrication. Its one-way seal prevents backflow of airflow and oil backflow, ensuring system stability. It also requires no additional power and has strong adaptability, effectively extending the service life of the booster valve and reducing maintenance frequency and costs. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a three-dimensional cross-sectional view of the overall structure of this utility model;

[0016] Figure 2 This is a sectional perspective view of the air inlet and oil inlet structure of this utility model;

[0017] Figure 3 This is a structural cross-sectional view of the quantitative one-way valve mechanism of this utility model;

[0018] Legend:

[0019] 1. Valve body; 2. Valve cover; 3. Isolation section; 4. First chamber; 5. Second chamber; 6. Pressure regulating mechanism; 7. Connecting rod; 8. First piston; 9. Second piston; 10. Air inlet; 11. Oil inlet; 12. Quantitative check valve mechanism; 1201. Housing; 1202. Inlet; 1203. Outlet; 1204. Limiting ring; 1205. Guide pin; 1206. Liquid tank; 1207. Conical block; 1208. Conical bevel; 1209. Connecting pin; 1210. Fixed plate; 1211. Temporary storage chamber; 1212. Release chamber; 1213. Support; 1214. Spring; 1215. Through groove; 13. Air outlet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Specific implementation examples are given below.

[0022] Please see Figures 1-3 The present invention discloses a pressure boosting valve with an oil injection structure, comprising a valve body 1 and a valve cover 2. The valve body 1 is internally divided into a first chamber 4 and a second chamber 5 by an isolation section 3. The isolation section 3 is provided with a pressure regulating mechanism 6 and a connecting rod 7. The two ends of the connecting rod 7 are respectively fitted with a first piston 8 and a second piston 9 located in the first chamber 4 and the second chamber 5. The isolation section 3 is provided with an air inlet 10 communicating with the first chamber 4, the second chamber 5, and the chamber of the pressure regulating mechanism 6, and an air outlet 13. The isolation section 3 is provided with an oil inlet 11 that communicates with the air inlet 10. During operation, when external gas enters the air inlet 10 through the air pipe connected to the air inlet 10, the gas flows synchronously into the first chamber 4 and the second chamber 5 through the one-way valve on the isolation section 3, and simultaneously into the chamber of the pressure regulating mechanism 6. In the first chamber 4 and the second chamber 5, the gas entering is located on the side of the first piston 8 and the second piston 9 near the isolation section 3, respectively. After being pressure-regulated by the pressure regulating mechanism 6, the gas enters through the first channel 01 opened on the valve body 1. The second piston 9 enters the second chamber 5 on the side away from the pressure regulating mechanism 6. At this time, the gas on the side of the second piston 9 away from the pressure regulating mechanism 6 creates a pressure difference, pushing the second piston 9 to move closer to the isolation part 3, and pushing the connecting rod 7 to drive the first piston 8 to move synchronously along the axial direction. At this time, the gas on the left side of the second piston 9 is compressed and the gas pressure increases. The pressurized gas enters the outlet 13 on the isolation part 3 through the one-way valve on the isolation part 3, and is discharged through the air pipe connected to the outside on the outlet 13. When lubrication is required, external lubricating oil can enter through the oil filling port 11 connected to the air inlet 10. With the power generated by the gas flow in the air inlet 10, the lubricating oil is transported along with the gas to the parts inside the valve body 1 that need lubrication, realizing the coordinated operation of lubrication and pressure regulation. This reduces the pipeline connection outside the valve body, improves the structural compactness, and the design of the oil filling port 11 directly connected to the air inlet 10 eliminates the need for an additional independent oil filling power device. The convenient delivery of lubricating oil can be achieved by the gas flow in the air inlet, simplifying the structure of the oil filling system and reducing equipment costs.

[0023] Furthermore, the oil inlet 11 and the air inlet 10 are positioned perpendicularly. During operation, this arrangement causes the flow direction of the lubricating oil to form a 90-degree orthogonal impact with the flow direction of the gas in the air inlet 10. This enhances the shearing and breaking effect of the airflow on the oil, generating fine and uniform oil mist to fully cover the components in each chamber with the airflow. At the same time, stable oil supply can be achieved with the help of gravity. Moreover, the vertical difference can weaken the backflow force of the airflow in the air inlet 10, reduce the risk of air blockage and oil backflow, and ensure the independence and operational reliability of the oil injection system.

[0024] Furthermore, a quantitative one-way valve mechanism 12 is assembled on the oil filling port 11. The quantitative one-way valve mechanism 12 includes a housing 1201. The housing 1201 is provided with an inlet 1202 connected to an external oil supply pipeline and an outlet 1203 connected to the oil filling port 11. A limiting protrusion ring 1204 is provided on the inner wall of the housing 1201. A guide pin 1205 is slidably disposed in the limiting protrusion ring 1204. A liquid groove 1206 is opened on one end of the guide pin 1205 near the inlet 1202. A cone block 1207 is provided on the other end of the guide pin 1205. A conical bevel 1208 is opened on the limiting protrusion ring 1204 to cooperate with the inclined surface of the cone block 1207. A connecting pin 1209 is provided on the cone block 1207. Within 1201, a temporary storage chamber 1211 and a release chamber 1212 communicating with an outlet 1203 are separated by a fixed plate 1210. A bracket 1213 is provided in the release chamber 1212. A spring 1214 is connected between the connecting pin 1209 and the bracket 1213. The connecting pin 1209 extends through the fixed plate 1210 to the release chamber 1212. A through groove 1215 is provided on the end of the connecting pin 1209 near the release chamber 1212. When the cone block 1207 is disengaged from the conical bevel 1208, the through groove 1215 does not connect the temporary storage chamber 1211 and the release chamber 1212. When the cone block 1207 is fitted and sealed with the conical bevel 1208, the through groove 1215 connects the temporary storage chamber 1211 and the release chamber 1212.During operation, in the initial state, the spring 1214 is in its naturally extended state, pushing the connecting pin 1209 to cause the cone block 1207 to fit tightly against the conical bevel 1208 of the limiting convex ring 1204, forming an initial seal. The passage between the inlet 1202 and the temporary storage chamber 1211 is blocked. The through groove 1215 on the connecting pin 1209 connects the temporary storage chamber 1211 and the release chamber 1212. The residual lubricating oil in the release chamber can flow to the oil inlet 11 through the outlet 1203, completing the end of the previous cycle. When the external oil supply pipeline provides pressure, the lubricating oil... Lubricating oil enters the housing 1201 through inlet 1202, generating axial thrust through the liquid groove 1206 of guide pin 1205. This thrust overcomes the elastic force of spring 1214, pushing guide pin 1205 towards release chamber 1212. Cone block 1207 disengages from conical bevel 1208, opening the passage between inlet 1202 and temporary storage chamber 1211. Lubricating oil flows into temporary storage chamber 1211 through the gap between cone block 1207 and conical bevel 1208, filling a metered temporary storage chamber. Simultaneously, connecting pin 1209 moves with guide pin 1205, and through groove 1215 is fixed. When the fixed plate 1210 is blocked, the passage between the temporary storage chamber 1211 and the release chamber 1212 is temporarily blocked, ensuring that the lubricating oil will not be released prematurely. When the external oil supply pressure decreases, the thrust on the guide pin 1205 weakens, and the elastic force of the spring 1214 dominates the reset movement, pushing the connecting pin 1209 to drive the cone block 1207 to move back towards the inlet 1202 until the cone block 1207 and the conical bevel 1208 are once again sealed. At this time, the connecting pin 1209 resets synchronously, and the through groove 1215 reconnects the temporary storage chamber 1211 and the release chamber 1212, and the temporary storage... The metered lubricating oil stored in the cavity flows into the release chamber 1212 through the through groove 1215, and then enters the oil filling port 11 through the outlet 1203. It is then transported to each chamber by the airflow from the air inlet 10. Simultaneously, because the cone block 1207 has blocked the inlet 1202 passage, it effectively prevents gas backflow to the external oil supply pipeline, thus achieving a one-way shut-off function. The metered one-way valve mechanism 12 achieves precise metered release of lubricating oil, avoiding insufficient or excessive lubrication. The one-way seal is reliable, preventing backflow of airflow and oil backflow. No additional power is required, extending the life of the booster valve and reducing maintenance costs.

[0025] In this utility model, the conventional pressure regulation logic of the pressure regulating mechanism 6 (such as pressure regulating valve core, pressure feedback component, etc.) on the isolation part 3, the reciprocating opening and closing principle of the one-way valve between the isolation part 3 and the first chamber 4 / second chamber 5, the specific processing form of the first channel 01 on the valve body 1, and the detailed working principle of the booster valve are all conventional technologies in the field. At the same time, the specific model of the spring 1214 in the quantitative one-way valve mechanism 12 and the conventional sealing method between the fixed plate 1210 and the housing 1201 are also well known to those skilled in the art. The above structures are not the innovation of this utility model, so the specific details of the above conventional structures will not be described in detail here.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A booster valve with an oil injection structure, comprising a valve body (1) and a valve cover (2), wherein the valve body (1) is provided with an isolation section (3), a first chamber (4), and a pressure regulating mechanism (6), wherein the isolation section (3) is provided with an air inlet (10) communicating with the chambers of the first chamber (4) and the pressure regulating mechanism (6), and an air outlet (13), characterized in that: The isolation section (3) is provided with an oil inlet (11). The oil inlet (11) replenishes the lubricating oil into the first chamber (4) through the airflow from the air inlet (10) to lubricate the friction surface of the first piston (8) inside and to lubricate the internal structure of the pressure regulating mechanism (6).

2. A pressure boosting valve with an oil injection structure according to claim 1, characterized in that: The valve body (1) is also provided with a second chamber (5). One end of the air inlet (10) is connected to the second chamber (5). The lubricating oil carried by the air inlet (10) enters the second chamber (5) to lubricate the friction surface of the second piston (9) inside.

3. A pressure boosting valve with an oil injection structure according to claim 1, characterized in that: The oil inlet (11) and the air inlet (10) are positioned perpendicularly to each other.

4. A pressure boosting valve with an oil injection structure according to claim 1, characterized in that: The oil inlet (11) is equipped with a metering check valve mechanism (12) that can meterly add lubricating oil into the air inlet (10).

5. A pressure boosting valve with an oil injection structure according to claim 4, characterized in that: The quantitative one-way valve mechanism (12) includes a housing (1201) and an inlet (1202) and an outlet (1203) connected to the housing (1201). A cone block (1207) is slidably disposed in the housing (1201) through a limiting protrusion ring (1204). When the cone block (1207) is disengaged from the limiting protrusion ring (1204), lubricating oil enters the temporary storage chamber (1211) and the temporary storage chamber (1211) is not connected to the release chamber (1212). When the cone block (1207) is fitted and sealed with the conical bevel (1208), the lubricating fluid in the temporary storage chamber (1211) flows to the release chamber (1212).

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