CN216241302U - Air inlet valve for screw air compressor - Google Patents

Abstract

The utility model discloses an air inlet valve for a screw air compressor, which comprises an air inlet valve body, wherein a piston device is arranged in a piston cavity in the air inlet valve body, the side surface of the air inlet valve is connected with an electromagnetic valve, the electromagnetic valve is a two-position two-way high-pressure electromagnetic valve, and an overflow valve is arranged between an outlet of the electromagnetic valve and an inlet of a piston cavity, namely an inlet of the overflow valve is communicated with the outlet of the electromagnetic valve and the inlet of the piston cavity. The utility model adopts a two-position two-way high-pressure electromagnetic valve, the inlet and the outlet of the electromagnetic valve are integrated internally, and the electromagnetic valve can be connected with a high-pressure exhaust air compressor; according to the utility model, the overflow valve is arranged between the outlet of the electromagnetic valve and the inlet of the piston cavity, so that part of high air pressure output by the electromagnetic valve is released, the air inlet pressure of the piston cavity is ensured not to exceed a set pressure value, the control pressure of the piston cavity is low, and the piston action impact is small; the utility model can be used normally by matching with a high-pressure electromagnetic valve without changing the structure of the original air inlet valve, thereby saving the cost.

Description

Air inlet valve for screw air compressor

Technical Field

The utility model relates to an air inlet valve for a screw air compressor.

Background

At present, the exhaust pressure of some screw air compressors in the market reaches a high-pressure (30 bar) state, but the existing air inlet valves are mostly applied to the screw air compressors with the exhaust pressure not exceeding 15bar, if the air compressors are matched with the high-pressure air compressors, high-pressure electromagnetic valves are needed, but the high-pressure electromagnetic valves cannot be matched with the existing air inlet valve structures for use, because the highest service pressure of the air inlet valves is mainly limited by the pressure resistance of the electromagnetic valves, the structural strength of valve bodies and the action life of all moving parts, the exhaust pressure of the high-pressure electromagnetic valves is too high, and the existing air inlet valves cannot be normally used. If a new air inlet valve is designed to be matched with the high-pressure electromagnetic valve, the production cost is increased.

Disclosure of Invention

The utility model aims to provide an air inlet valve for a screw air compressor, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an admission valve for screw rod air compressor, includes the admission valve body, is equipped with piston device in this internal piston cavity of admission valve, and the solenoid valve is connected to the admission valve side, and the solenoid valve is two-way high pressure solenoid valve, is equipped with the overflow valve between solenoid valve export and the piston chamber entry, and the overflow valve entry communicates with each other with solenoid valve export and piston chamber entry promptly.

The utility model is further improved in that: an overflow valve core is arranged in the overflow valve, an overflow valve cover is arranged on the overflow valve core, an overflow valve reset spring is sleeved on the overflow valve core, an overflow valve inlet is arranged at the bottom of the overflow valve, and an overflow valve outlet is arranged in the overflow valve.

The utility model is further improved in that: the overflow valve is integrated or external.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model adopts a two-position two-way high-pressure electromagnetic valve, the inlet and the outlet of the electromagnetic valve are integrated internally, and the electromagnetic valve can be connected with a high-pressure exhaust air compressor; according to the utility model, the overflow valve is arranged between the outlet of the electromagnetic valve and the inlet of the piston cavity, so that part of high air pressure output by the electromagnetic valve is released, the air inlet pressure of the piston cavity is ensured not to exceed a set pressure value, the control pressure of the piston cavity is low, and the piston action impact is small; the utility model can be used normally by matching with a high-pressure electromagnetic valve without changing the structure of the original air inlet valve, thereby saving the cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the relief valve;

reference numerals: the air inlet valve comprises an air inlet valve body 1, a piston cavity 2, a piston device 3, an electromagnetic valve 4, an electromagnetic valve outlet 5, an overflow valve 6, an overflow valve inlet 7, an overflow valve core 8, an overflow valve cover 9, an overflow valve return spring 10 and an overflow valve outlet 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 and fig. 2, the present embodiment provides a technical solution: an air inlet valve for a screw air compressor comprises an air inlet valve body 1, wherein a piston device 3 is arranged in a piston cavity 2 in the air inlet valve body 1, the piston device 3 comprises a piston, and the top of the piston is provided with a check valve core; the side surface of the air inlet valve is connected with an electromagnetic valve 4, the electromagnetic valve 4 is a two-position two-way high-pressure electromagnetic valve, and an inlet and an outlet of the electromagnetic valve are integrated and can be connected with an air compressor with the exhaust pressure of 30 bar; the bottom of the electromagnetic valve 4 is provided with an electromagnetic valve outlet 5, and an overflow valve 6 is arranged between the electromagnetic valve outlet 5 and the piston cavity inlet, namely, an overflow valve inlet 7 is communicated with the electromagnetic valve outlet 5 and the piston cavity inlet. An overflow valve core 8 is arranged in the overflow valve, an overflow valve cover 9 is arranged on the overflow valve core 8, an overflow valve reset spring 10 is sleeved on the overflow valve core 8, an overflow valve inlet 7 is arranged at the bottom of the overflow valve, and an overflow valve outlet 11 is arranged in the overflow valve. According to the utility model, the overflow valve is arranged between the outlet of the electromagnetic valve and the inlet of the piston cavity, so that part of high air pressure output by the electromagnetic valve is released, the air inlet pressure of the piston cavity is ensured not to exceed a set pressure value, the control pressure of the piston cavity is low, and the piston action impact is small; the utility model can be used normally by matching with a high-pressure electromagnetic valve without changing the structure of the original air inlet valve, thereby saving the cost.

The overflow valve 6 and the air inlet valve can be integrated, namely, the overflow valve 6 is arranged in the air inlet valve body, and the overflow valve cannot be seen from the outside, so that the appearance is more attractive; or the overflow valve 6 is in an external connection type, namely the overflow valve 6 is arranged outside the air inlet valve and is an independent device.

The side of the air inlet valve is also connected with a relief valve body, the relief valve body is arranged below the electromagnetic valve 4, an unloading valve core is arranged in the relief valve body, an air supply outlet and a relief outlet are arranged between the unloading valve core and the relief valve body, a relief valve cover is arranged at the end part of the relief valve body, a damping valve core is arranged between the relief valve cover and the unloading valve core, a relief inlet is arranged on the outer side of the relief valve cover, and the air inlet valve and the relief valve body are communicated through a process channel.

The edge of the overflow valve cover 9 is provided with a retaining ring, and sealing devices are arranged between the overflow valve core 8 and the overflow valve cover 9, between the overflow valve cover 9 and the overflow valve body, between the unloading valve core and the relief valve body and between the relief valve body and the air inlet valve.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. The utility model provides an admission valve for screw rod air compressor, includes admission valve body (1), be equipped with piston device (3), its characterized in that in piston chamber (2) in admission valve body (1): the side face of the air inlet valve is connected with an electromagnetic valve (4), the electromagnetic valve is a two-position two-way high-pressure electromagnetic valve, and an overflow valve (6) is arranged between an electromagnetic valve outlet (5) and a piston cavity inlet, namely the overflow valve inlet (7) is communicated with the electromagnetic valve outlet (5) and the piston cavity inlet.

2. The intake valve for a screw air compressor according to claim 1, characterized in that: the overflow valve is characterized in that an overflow valve core (8) is arranged in the overflow valve, an overflow valve cover (9) is arranged on the overflow valve core (8), an overflow valve reset spring (10) is sleeved on the overflow valve core (8), an overflow valve inlet (7) is arranged at the bottom of the overflow valve, and an overflow valve outlet (11) is arranged in the overflow valve.

3. The intake valve for a screw air compressor according to claim 1, characterized in that: the overflow valve (6) is integrated or external.

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