CN212407160U

CN212407160U - Threaded cartridge type exhaust buffer valve

Info

Publication number: CN212407160U
Application number: CN202021837812.9U
Authority: CN
Inventors: 王颖涛
Original assignee: Jinan Jili Machinery Equipment Co Ltd
Current assignee: Jinan Jili Machinery Equipment Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-01-26
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a screw thread cartridge formula buffer valve that exhausts, including the main valve body and main valve seat, the inlet port has been seted up on main valve body top, and the oil gallery has been seted up to main valve body one side, inlet port and oil gallery respectively with the internal cavity intercommunication of main valve, insert in the internal cavity of main valve and install the main valve seat, one side that the main valve seat is located the internal cavity of main valve is fixed with the case, case damping hole has been seted up respectively at the upper and lower both ends of case, the downthehole movable mounting of case damping has the steel ball, the one end that the case deviates from the main valve seat is fixed with the spring, and the spring supports the internal cavity one end of main valve, the main valve seat is located the external one end. The utility model has the advantages of automatic air discharge from the oil pump, saving the debugging time; the impact of the hydraulic system on oil cylinders and valves in the system when the hydraulic system starts to work is eliminated, and the system can work more stably.

Description

Threaded cartridge type exhaust buffer valve

Technical Field

The utility model relates to a hydraulic system technical field specifically is a screw thread cartridge formula exhaust buffer valve.

Background

The hydraulic system functions to increase the force by changing the pressure. A complete hydraulic system consists of five parts, namely a power element, an execution element, a control element, an auxiliary element and hydraulic oil. Hydraulic systems can be divided into two categories: hydraulic transmission systems and hydraulic control systems. Hydraulic drive systems have as a primary function the transmission of power and motion. The hydraulic control system is designed to provide a hydraulic system output that meets specific performance requirements.

Air in an oil pump of the existing hydraulic system needs to be emptied manually, the operation is complicated, and automatic emptying cannot be realized; and the impact of the hydraulic oil on the system is too great when the hydraulic system starts to start.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a screw thread cartridge type exhaust buffer valve, which can automatically discharge the air in an oil pump, thereby saving the debugging time; the impact on oil cylinders and valves in the system when the hydraulic system starts to work is eliminated, so that the system has the advantage of more stable work, and the problems that air in an oil pump of the hydraulic system needs to be manually emptied, the operation is complicated, and automatic emptying cannot be realized are solved; and the impact of the hydraulic oil on the hydraulic system is too large when the hydraulic system starts to start.

In order to achieve the above object, the utility model provides a following technical scheme: a threaded plug-in type exhaust buffer valve comprises a main valve body and a main valve seat, wherein the main valve seat is inserted into a cavity in the main valve body, a valve core is fixed on one side, located in the cavity in the main valve body, of the main valve seat, valve core damping holes are formed in the upper end and the lower end of the valve core respectively, a steel ball is movably mounted in each valve core damping hole, a spring is fixed at one end, deviating from the main valve seat, of the valve core, the spring abuts against one end of the cavity in the main valve body, and an adjusting screw is inserted into one end, located outside the main.

Preferably, a second sealing ring is attached to the joint of the main valve seat and the main valve body cavity.

Preferably, a first sealing ring is attached to the joint of the valve core and the cavity of the main valve body.

Preferably, the top end of the main valve body is provided with an oil inlet, one side of the main valve body is provided with an oil return hole, and the oil inlet and the oil return hole are respectively communicated with the cavity in the main valve body.

Preferably, a third sealing ring is installed at the joint of the adjusting screw and the main valve seat.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model achieves the purpose of automatically discharging the air in the oil pump by arranging the spring and the steel ball, thereby saving the debugging time; the utility model discloses be provided with spring and steel ball, hydraulic system gets into the case from the inlet port, go into the oil gallery through the case opening and flow, when inlet port pressure is greater than spring pressure, steel ball compression control is moved right and is stopped up inside draining port, oil gets into the grease chamber between case and the main valve seat through the case damping hole and makes the case remove left and make the case opening littleer more, close the oil gallery and do not have the oil to spill over until the opening, the effect that can make inlet port pressure more and more high bring simultaneously when the case removes left increases to rated flow at the uniform velocity flow. When the oil pump stops, because the oil inlet hole has no pressure, the oil in the oil chamber jacks the steel ball under the pressure of the spring and flows out quickly, so that the valve core moves rightwards to an initial state. When the oil pump works, air existing in the oil pump firstly enters the main valve body from the oil inlet and then is discharged from the valve core opening to the oil return hole, and the oil pump starts to work.

Drawings

Fig. 1 is a schematic front sectional structural view of the present invention.

In the figure: 1. a main valve body; 2. a spring; 3. a valve core; 4. a steel ball; 5. a first seal ring; 6. a second seal ring; 7. a main valve seat; 8. an adjusting screw; 9. a third seal ring; 10. a valve core damping orifice; 11. an oil return hole; 12. an oil inlet hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present invention provides an embodiment: the utility model provides a screw thread cartridge formula buffer valve that exhausts, including the main valve body 1 and main valve seat 7, inlet port 12 has been seted up on the main valve body 1 top, return oil hole 11 has been seted up to main valve body 1 one side, inlet port 12 and return oil hole 11 communicate with the cavity in the main valve body 1 respectively, insert in the cavity in the main valve body 1 and install main valve seat 7, main valve seat 7 and the junction laminating of the main valve body 1 cavity of main valve body are installed second sealing washer 6, second sealing washer 6 makes the junction of main valve seat 7 and the main valve body 1 sealed. A valve core 3 is fixed on one side of the main valve seat 7, which is positioned in the cavity of the main valve body 1, a first sealing ring 5 is attached to the joint of the valve core 3 and the cavity of the main valve body 1, and the joint of the valve core 3 and the main valve body 1 is sealed by the first sealing ring 5. The upper end and the lower end of the valve core 3 are respectively provided with a valve core damping hole 10, a steel ball 4 is movably arranged in the valve core damping hole 10, one end of the valve core 3, which is far away from the main valve seat 7, is fixed with a spring 2, the spring 2 props against one end of a cavity in the main valve body 1, one end of the main valve seat 7, which is positioned outside the main valve body 1, is inserted and installed with an adjusting screw 8, the joint of the adjusting screw 8 and the main valve seat 7 is provided with a third sealing ring 9, and the third sealing ring 9 seals the joint of the adjusting screw.

Hydraulic oil gets into case 3 from inlet port 12, it flows out to go into oil gallery 11 through 3 openings of case, when inlet port 12 pressure is greater than spring 2 pressure, steel ball 4 is moved rightwards under the control of pressure and is blocked up inside draining opening, oil gets into the grease chamber between case 3 and the main valve seat 7 through case damping hole 10 and makes case 3 remove left and make 3 openings of case littleer and more, it overflows to have no oil to close oil gallery 11 until the opening, the effect that can make inlet port 12 pressure when case 3 moves left and more high bring simultaneously is that the flow increases to rated flow at the uniform velocity. When the oil pump stops, because the oil inlet hole 12 has no pressure, the oil in the oil chamber is pressed by the spring 2 to jack the steel ball 4 and quickly flow out, so that the valve core 3 moves rightwards to an initial state.

When the valve works, air existing in the oil pump firstly enters the main valve body 1 from the oil inlet hole 12 and then is discharged from the valve core 3 opening to the oil return hole 11, and the oil pump starts to work.

The working principle is as follows: hydraulic oil gets into case 3 from inlet port 12, it flows out to go into oil gallery 11 through 3 openings of case, when inlet port 12 pressure is greater than spring 2 pressure, steel ball 4 is moved rightwards under the control of pressure and is blocked up inside draining opening, oil gets into the grease chamber between case 3 and the main valve seat 7 through case damping hole 10 and makes case 3 remove left and make 3 openings of case littleer and more, it overflows to have no oil to close oil gallery 11 until the opening, the effect that can make inlet port 12 pressure when case 3 moves left and more high bring simultaneously is that the flow increases to rated flow at the uniform velocity.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a thread cartridge formula cushion valve that exhausts, includes the main valve body (1) and main valve seat (7), its characterized in that: the valve is characterized in that a main valve seat (7) is inserted into a cavity in the main valve body (1), a valve core (3) is fixed on one side, located in the cavity, of the main valve body (1), of the main valve seat (7), valve core damping holes (10) are formed in the upper end and the lower end of the valve core (3) respectively, a steel ball (4) is movably installed in each valve core damping hole (10), a spring (2) is fixed at one end, deviated from the main valve seat (7), of the valve core (3), the spring (2) abuts against one end, located in the cavity, of the main valve body (1), and an adjusting screw (8) is inserted into one end, located outside the main valve body (1), of.

2. The threaded cartridge exhaust buffer valve of claim 1, wherein: and a second sealing ring (6) is attached to the joint of the main valve seat (7) and the cavity of the main valve body (1).

3. The threaded cartridge exhaust buffer valve of claim 1, wherein: and a first sealing ring (5) is attached to the joint of the valve core (3) and the cavity of the main valve body (1).

4. The threaded cartridge exhaust buffer valve of claim 1, wherein: an oil inlet hole (12) is formed in the top end of the main valve body (1), an oil return hole (11) is formed in one side of the main valve body (1), and the oil inlet hole (12) and the oil return hole (11) are respectively communicated with a cavity in the main valve body (1).

5. The threaded cartridge exhaust buffer valve of claim 1, wherein: and a third sealing ring (9) is arranged at the joint of the adjusting screw (8) and the main valve seat (7).