CN217272150U

CN217272150U - Split type enhanced damping type overflow valve

Info

Publication number: CN217272150U
Application number: CN202221019447.XU
Authority: CN
Inventors: 蔡起涛; 崔劲松
Original assignee: Wuhu Yingnuo Hydraulic Technology Co ltd
Current assignee: Wuhu Yingnuo Hydraulic Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-23
Anticipated expiration: 2032-04-29

Abstract

The utility model relates to the technical field of hydraulic systems, specifically disclose a split type reinforced damping formula overflow valve, including main valve seat and main valve cover, main valve seat threaded connection the main valve cover, axially be equipped with adjusting screw, spring and spring holder in the main valve seat in proper order, be equipped with the case in the main valve cover, the one end of spring is connected adjusting screw, the other end butt of spring the case, the spring holder is acted on the case with the power of spring evenly, the utility model relates to a case adopts piston buffering reinforcing damping, strengthens case stability, reduces the phenomenon of squealing; the pressure regulating deviation is reduced, the processing difficulty is reduced, and the processing precision is improved; and improves processing costs.

Description

Split type enhanced damping type overflow valve

Technical Field

The utility model belongs to the technical field of hydraulic system, concretely a split type reinforcing damping formula overflow valve.

Background

In hydraulic systems, a relief valve is often inserted to limit the pressure in the system. The valve core of most overflow valves on the market adopts the style of a one-way valve cone valve core, in the working process, the phenomena of unstable pressure regulation, squeal, difficulty in processing, poor opening and closing characteristics and the like can be caused very well, and the adjusting device of the overflow valve has no limiting structure and can easily rotate out.

SUMMERY OF THE UTILITY MODEL

Purpose of the utility model

To the technical problem, the utility model provides a split type reinforcing damping formula overflow valve for solve the technical problem who mentions in the background art.

Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does: a split type enhanced damping overflow valve comprises a main valve seat and a main valve sleeve, wherein the main valve seat is in threaded connection with the main valve sleeve, an adjusting screw, a spring and a spring seat are axially arranged in the main valve seat in sequence, a valve core is arranged in the main valve sleeve, one end of the spring is connected with the adjusting screw, the other end of the spring abuts against the valve core, and the spring seat uniformly applies the force of the spring to the valve core.

The further improvement lies in that: the left side of the main valve sleeve is provided with an external thread, the right side of the thread of the main valve seat is provided with an internal thread, and the main valve sleeve and the internal thread are connected by threads and fixed by thread glue.

The further improvement lies in that: and a steel wire clamp spring for limiting the adjusting screw rod is arranged in the main valve seat.

The further improvement lies in that: and a nut in threaded connection with the adjusting screw is arranged outside the adjusting screw.

The further improvement lies in that: when the system pressure does not exceed the pressure set by the spring, the valve core is pressed on the valve sleeve to separate an oil inlet and an oil return port; when the system pressure exceeds the pressure set by the spring, the valve core and the spring seat are pushed away from the valve sleeve, and the oil inlet is communicated with the oil return port.

The further improvement lies in that: the spring seat is provided with arc grooves at two ends which are radially symmetrical, the depth of the arc groove is 1.5mm, and the arc groove is formed by a straight line which forms an angle of 60 degrees with the central axis, an arc with the radius of R2.0 and an arc with the radius of R0.5 which are tangent.

The further improvement is that: the main valve cover outside sets up the inclined hole of 18 degrees oil intakes, and radial evenly distributed is 6, and the hole comprises both ends step hole, and is the blind hole.

Advantageous effects

The technical scheme provided by the utility model, compared with prior art, following beneficial effect has:

the valve core designed by the utility model adopts piston type buffering to enhance damping, enhance the stability of the valve core and reduce the phenomenon of squeaking; the pressure regulating deviation is reduced, the processing difficulty is reduced, and the processing precision is improved; and improves processing costs.

Drawings

FIG. 1 is a front view of the overflow valve of the present invention;

FIG. 2 is a schematic view of the spring seat structure of the present invention;

fig. 3 is a cross-sectional view of the main valve cover of the present invention.

Reference numerals

1-adjusting a screw; 2-a nut; 3-a steel wire retainer ring; 4-main valve seat; 5-a spring; 6-cone valve core; 7-spring seats; 8-main valve sleeve.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," "provided," and the like are to be construed broadly, e.g., as meaning fixedly connected, 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 according to specific situations by those of ordinary skill in the art.

Example 1

Referring to fig. 1-3, the installation mode of the plug-in overflow valve provided by the utility model is plug-in, and is connected with the valve block through the external thread on the main valve seat 4. An O-shaped ring is arranged on the external thread edge and used for sealing oil and preventing the oil from leaking outwards.

Wherein, the inside aperture of main valve cover 8 is used for adorning case 6, plays the guide effect for case 6, makes its during operation more steady, plays the effect of reinforcing damping.

The big hole of the inner part of the main valve seat 4 is provided with a spring seat 7, a spring 5 and an adjusting screw rod 1, the adjusting screw rod 1 is provided with an O-shaped ring for sealing oil and preventing oil from leaking outwards, the spring seat 7 is mainly used for uniformly applying the force of the spring 5 on the valve core 6, a groove is processed on the excircle of the main valve seat 4 and is used for assembling the O-shaped ring and a rubber check ring, the groove is mainly used for sealing oil and preventing the oil of a P port (oil inlet) from leaking to a T port (oil return port), an annular hole is processed on the right side of the external thread of the main valve seat 4 and is the oil return port, and the annular inclined hole at the right end of the main valve sleeve is the oil inlet.

The front end of the cone valve core 7 is provided with a slide valve type structure which is mainly used for guiding stably, so that the valve core cannot deflect too much, the middle of the valve core 7 is provided with a conical surface, the left side of the valve core is a bell-mouthed sealing surface, the main valve sleeve 8 is pressed on the conical surface, an oil sealing line is arranged on the conical surface, and when the system pressure does not exceed the pressure set by the spring 5, the cone valve core 6 is pressed on the main valve sleeve 8 to separate a port P from a port T; when the system pressure exceeds the pressure set by the spring, the cone valve core 6 and the spring seat 7 are pushed away from the valve sleeve 4, and the port P is communicated with the port T.

The left side of the spring seat 7 is provided with a large step, the spring 5 is pressed by the step surface, the valve core 6 is assembled in the hole of the spring seat 7, the left side of the conical surface of the valve core 6 is provided with a small step, and the right end surface of the spring seat 7 is pressed with the step of the valve core 6.

The two ends of the arc-shaped groove are radially symmetrical, the groove depth is 1.5mm, the arc-shaped groove is formed by a straight line forming 60 degrees with the central axis, an arc with the radius R2.0 and an arc with the radius R0.5 which are tangent, the arc-shaped groove can enable liquid flow to generate buffering when a valve core of the overflow valve is opened, hydraulic force offsets partial increment of a spring, pressure regulating deviation of the valve is reduced, stability of the valve is enhanced, and reliability of the overflow valve is improved.

The right side of the spring 5 is pressed on a step of the spring seat 7, the left side of the spring is pressed on a step of the adjusting screw rod 1, and the magnitude of the spring force is adjusted by screwing and unscrewing the adjusting screw rod 1.

There is a hexagon socket on adjusting screw 1 left side, use hexagon socket wrench cover in the inside, a size for adjusting the spring force, wherein there is a section screw thread in adjusting screw 1's centre, this screw thread and nut 2 and main valve seat 4 internal thread connection, nut 2's effect is used for locking adjusting screw 1, let it can not become flexible, its and main valve seat 4 internal thread connection's effect make things convenient for adjusting screw 1 to adjust the size of spring force, right-hand member assembly O shape circle on the adjusting screw, its main action is used for sealing oil, prevent that fluid from oozing outward, adjusting screw 1 right-hand member has a step, a step for pushing down spring 5.

A steel wire retaining ring 3 is arranged in a steel wire groove of an inner hole in the left side of a main valve seat 4, and the steel wire retaining ring is arranged in the steel wire groove of the main valve seat 4 and used for limiting the stroke of the adjusting screw rod 1 to be limited and is arranged outside the adjusting screw rod in a screwing mode, so that oil injection occurs in a system.

Fig. 1 shows the utility model discloses the state that cartridge overflow valve did not open, P mouth was obstructed with the T mouth this moment, and system pressure is less than the pressure that the spring was set, and when system pressure slowly increased, when exceeding the pressure that the spring was set, pressure oil acted on the conical surface of case, and pressure oil promotes case 6, and case 6 slowly moves left along the aperture of valve barrel, overcomes the spring force and opens, and pressure oil flows to the T mouth from the P mouth.

The above-mentioned embodiments only express a certain implementation manner of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention; therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a split type reinforcing damping formula overflow valve, includes main valve seat and main valve cover, its characterized in that: the main valve seat is in threaded connection with the main valve sleeve, an adjusting screw rod, a spring and a spring seat are sequentially and axially arranged in the main valve seat, a valve core is arranged in the main valve sleeve, one end of the spring is connected with the adjusting screw rod, the other end of the spring is abutted against the valve core, and the spring seat uniformly applies the force of the spring to the valve core.

2. The split damping-enhancing relief valve according to claim 1, wherein: the left side of the main valve sleeve is provided with an external thread, the right side of the thread of the main valve seat is provided with an internal thread, and the main valve sleeve and the internal thread are connected by threads and fixed by thread glue.

3. The split damping-enhancing relief valve according to claim 1, wherein: and a steel wire clamp spring for limiting the adjusting screw rod is arranged in the main valve seat.

4. The split damping-enhancing relief valve according to any one of claims 1 to 3, wherein: and a nut in threaded connection with the adjusting screw is arranged outside the adjusting screw.

5. The split damping-enhancing relief valve according to claim 1, wherein: when the system pressure does not exceed the pressure set by the spring, the valve core is pressed on the valve sleeve to separate an oil inlet and an oil return port; when the system pressure exceeds the pressure set by the spring, the valve core and the spring seat are pushed away from the valve sleeve, and the oil inlet is communicated with the oil return port.

6. The split damping-enhancing relief valve according to claim 1, wherein: the spring seat is provided with arc grooves at two ends which are radially symmetrical, the depth of the arc groove is 1.5mm, and the arc groove is formed by a straight line which forms an angle of 60 degrees with the central axis, an arc with the radius of R2.0 and an arc with the radius of R0.5 which are tangent.

7. The split damping-enhancing relief valve according to claim 1, wherein: the main valve cover outside sets up the inclined hole of 18 degrees oil intakes, and radial evenly distributed is 6, and the hole comprises both ends step hole, and is the blind hole.