CN210830590U - Safety valve with selection function - Google Patents

Abstract

The utility model provides a relief valve with optional function, which comprises a valve body, be provided with option and overflow portion on the valve body, option is provided with the import, the quantity of import is two, the overflow portion passes through the option intercommunication has pressure the import, through setting up option and overflow portion, the import and the overflow portion intercommunication that have pressure can be selected to the option, and this kind of relief valve with optional function makes two pipeline pressure of single relief valve can monitor simultaneously, and the practicality is strong to improve hydraulic system's integrated level, practiced thrift the cost, improved economic benefits.

Description

Safety valve with selection function

Technical Field

The utility model relates to a hydraulic component makes the field, especially relates to a relief valve with select function.

Background

The safety valve is generally used in a hydraulic system and is in a normally closed state in a normal state, and when the pressure value in the system or the pipeline reaches or exceeds a set value, the safety valve is opened so as to timely release the pressure in the system or the pipeline, so that the purpose of protecting system elements and the pipeline is achieved, and the hydraulic elements or the pipeline are prevented from being damaged due to overhigh pressure.

The existing safety valve has single function, a plurality of safety valves are required to be arranged at different positions of a pipeline, and the integration degree of the safety valve is lower.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that there is the function singleness in current relief valve, needs to set up a plurality of relief valves to the different positions of pipeline, the utility model provides a relief valve with select function solves above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is: a safety valve with a selection function comprises a valve body, wherein a selection part and two overflow parts are arranged on the valve body, the selection part is provided with inlets, and the overflow parts are communicated with the inlets with pressure through the selection part.

Further: the selection part comprises a selection valve cavity and a selection valve core arranged in the selection valve cavity, the selection valve core can move up and down along the selection valve cavity, the two inlets are respectively a first inlet and a second inlet, a first valve seat is arranged on the valve body above the selection valve core, and the first inlet is arranged on the first valve seat and communicated with the selection valve cavity; a second valve seat is arranged on the valve body and below the selection valve core, a second inlet is arranged on the second valve seat and communicated with the selection valve cavity, and the second inlet has pressure capable of pushing the selection valve core to move upwards to be tightly attached to the first valve seat and close the first inlet; the first inlet is provided with a liquid inlet, the pressure of the liquid inlet can push the selection valve core to move downwards to be tightly attached to the second valve seat and seal the second inlet, and a connecting channel is arranged on the valve body corresponding to the position of the selection valve core and connected with the selection valve cavity and the overflow part.

Further: the overflow part comprises an overflow valve cavity and an overflow valve core arranged in the overflow valve cavity, an outlet is arranged above the connecting channel on the valve body, the outlet is communicated with the overflow valve cavity, a spring is arranged at the upper end of the overflow valve core, the spring is installed in the overflow valve cavity through a spring adjusting piece and can push the overflow valve core to move along the overflow valve cavity, an overflow groove is arranged at the lower part of the overflow valve core, the outer diameter of the overflow groove is smaller than that of the overflow valve core, a through hole penetrating through the overflow valve core is formed in the overflow groove and communicated with the connecting channel, a damping hole is formed in the center of the bottom end of the overflow valve core and arranged in the vertical direction, and the damping hole is communicated with the through hole.

Further: and an inner oil drainage cavity is arranged on the side wall of the overflow valve body and corresponds to the position of the spring, and the inner oil drainage cavity is communicated with the outlet.

Further: the spring adjusting piece comprises an adjusting block and an adjusting nut, the adjusting block and the adjusting nut are arranged at the upper end of the spring, an external thread is arranged on the valve body, and the adjusting nut is screwed and installed on the external thread and can push the adjusting block and then the spring.

The beneficial effects of the utility model are that, the utility model relates to a relief valve with select function is through setting up select part and overflow portion, select part can select to have the import of pressure and overflow portion intercommunication, and this kind of relief valve with select function makes single relief valve can monitor two pipeline pressure simultaneously, and the practicality is strong to hydraulic system's integrated level has been improved, has practiced thrift the cost, has improved economic benefits.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a safety valve with a selection function according to the present invention.

In the figure, 2, a selection valve cavity, 3, a selection valve core, 5, an overflow valve cavity, 6, an overflow valve core, 7, an outlet, 8, a connecting passage, 9, a spring, 10, a through hole, 11, a damping hole, 12, an inner oil drainage cavity, 13, a regulating block, 14, a regulating nut, 21, a first inlet, 22, a second inlet, 23, a first valve seat, 24, a second valve seat, 25 and an overflow groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

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", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the present invention, and 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 the like 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 "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

As shown in fig. 1, the utility model provides a relief valve with select function, which comprises a valve body, be provided with selection portion and overflow portion on the valve body, selection portion is provided with the import, the quantity of import is two, the overflow portion passes through selection portion intercommunication has pressure the import, the during operation is connected with two imports respectively with the pole chamber of hydro-cylinder, rodless chamber and then monitors the pressure that has pole chamber and rodless intracavity simultaneously, and this kind of relief valve with select function makes single relief valve can monitor two pipeline pressure, and the practicality is strong to hydraulic system's integrated level has been improved, for the company creates better economic benefits.

The selection part comprises a selection valve cavity 2 and a selection valve core 3 arranged in the selection valve cavity 2, the selection valve core 3 can move up and down along the selection valve cavity 2, the two inlets are respectively a first inlet 21 and a second inlet 22, a first valve seat 23 is arranged on the valve body and above the selection valve core 3, and the first inlet 21 is arranged on the first valve seat 23 and communicated with the selection valve cavity 2; a second valve seat 24 is arranged on the valve body and positioned below the selection valve core 3, the second inlet 22 is arranged on the second valve seat 24 and communicated with the selection valve cavity 2, and the second inlet 22 has pressure capable of pushing the selection valve core 3 to move upwards to be tightly attached to the first valve seat 23 and close the first inlet 21; the first inlet 21 has a pressure capable of pushing the selection valve core 3 to move downwards to be tightly attached to the second valve seat 24 and close the second inlet 22, a connecting passage 8 is arranged on the valve body at a position corresponding to the selection valve core 3, and the connecting passage 8 is connected with the selection valve cavity 2 and a liquid inlet of the overflow part.

The overflow part comprises an overflow valve cavity 5 and an overflow valve core 6 arranged in the overflow valve cavity 5, an outlet 7 is arranged on the valve body and positioned above the connecting channel 8, the outlet is communicated with the overflow valve cavity 5, a spring 9 is arranged at the upper end of the overflow valve core 6, the spring 9 is arranged in the overflow valve cavity 5 through a spring adjusting piece, the spring 9 can push the overflow valve core 6 to move along the overflow valve cavity 5, an overflow groove 25 is arranged at the lower part of the overflow valve core, the outer diameter of the overflow groove 25 is smaller than that of the overflow valve core 6, a through hole 10 penetrating through the overflow valve core 6 is arranged on the overflow groove 25, the through hole 10 is communicated with the connecting channel 8, a damping hole 11 is arranged at the bottom center of the overflow valve core 6, and the damping hole 11 is arranged in the vertical direction, the damping hole 11 is communicated with the through hole 10.

When the pressure in the overflow valve cavity 5 is low, the overflow valve core 6 is at the lowest end under the presetting action of the spring 9, so that the overflow groove 25 and the outlet 7 are blocked, the safety valve is in a closed state, when the pressure in the selected valve cavity is high, hydraulic oil acts on the bottom surface of the overflow valve core 6 after passing through the connecting channel 8, the through hole 10 and the damping hole 11, so that the overflow valve core 6 moves upwards, the overflow groove 25 and the outlet 7 form a communicated channel, and the hydraulic oil flows out from the outlet 7.

An inner oil drainage cavity 12 is arranged on the side wall of the overflow valve body and corresponds to the position of the spring 9, the inner oil drainage cavity 12 is communicated with the outlet 7, a certain gap exists between the overflow valve core 6 and the overflow valve cavity 5, a small amount of hydraulic oil can enter the position of the spring 9, and the hydraulic oil at the position of the spring 9 can be led back to the outlet 7 through the inner oil drainage cavity 12.

The spring adjusting piece comprises an adjusting block 13 and an adjusting nut 14 which are arranged at the upper end of the spring 9, an external thread is arranged on the valve body, the adjusting nut 14 is screwed and installed on the external thread and can push the adjusting block 13 to push the spring 9, and the compression degree of the spring 9 can be adjusted by screwing the adjusting nut 14 to control the pressure range of overflow.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (5)

1. A safety valve with a selection function comprises a valve body, and is characterized in that: the valve body is provided with a selection part and an overflow part, the selection part is provided with two inlets, and the overflow part is communicated with the inlets with pressure through the selection part.

2. A safety valve with a selective function according to claim 1, characterized in that: the selection part comprises a selection valve cavity (2) and a selection valve core (3) arranged in the selection valve cavity (2), the selection valve core (3) can move up and down along the selection valve cavity (2), the two inlets are respectively a first inlet (21) and a second inlet (22), a first valve seat (23) is arranged on the valve body and above the selection valve core (3), and the first inlet (21) is arranged on the first valve seat (23) and communicated with the selection valve cavity (2); a second valve seat (24) is arranged on the valve body and below the selection valve core (3), the second inlet (22) is arranged on the second valve seat (24) and communicated with the selection valve cavity (2), and the second inlet (22) has pressure capable of pushing the selection valve core (3) to move upwards to be tightly attached to the first valve seat (23) and close the first inlet (21); the first inlet (21) is provided with a pressure capable of pushing the selection valve core (3) to move downwards to be tightly attached to the second valve seat (24) and close the second inlet (22), a connecting channel (8) is arranged on the valve body corresponding to the position of the selection valve core (3), and the connecting channel (8) is connected with the selection valve cavity (2) and a liquid inlet of the overflow part.

3. A safety valve with a selective function according to claim 2, characterized in that: the overflow part comprises an overflow valve cavity (5) and an overflow valve core (6) arranged in the overflow valve cavity (5), an outlet (7) is arranged above the connecting channel (8) on the valve body and is communicated with the overflow valve cavity (5), a spring (9) is arranged at the upper end of the overflow valve core (6), the spring (9) is installed in the overflow valve cavity (5) through a spring adjusting piece, the spring (9) can push the overflow valve core (6) to move along the overflow valve cavity (5), an overflow groove (25) is arranged at the lower part of the overflow valve core, the outer diameter of the overflow groove (25) is smaller than the outer diameter of the overflow valve core (6), a through hole (10) penetrating through the overflow valve core (6) is arranged on the overflow groove (25), and the through hole (10) is communicated with the connecting channel (8), the bottom center of the overflow valve core (6) is provided with a damping hole (11), the damping hole (11) is arranged along the vertical direction, and the damping hole (11) is communicated with the through hole (10).

4. A safety valve with a selective function according to claim 3, characterized in that: an inner oil leakage cavity (12) is arranged on the side wall of the overflow valve body and corresponds to the position of the spring (9), and the inner oil leakage cavity (12) is communicated with the outlet (7).

5. A safety valve with a selective function according to claim 3, characterized in that: the spring adjusting piece comprises an adjusting block (13) and an adjusting nut (14) which are arranged at the upper end of the spring (9), an external thread is arranged on the valve body, and the adjusting nut (14) is screwed and installed on the external thread and can push the adjusting block (13) and then the spring (9).

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