CN212731429U - Gas cap valve with filtering function - Google Patents

Abstract

The utility model discloses a gas cap valve with filtering, which comprises a valve body and a valve core, wherein a cavity is arranged in the valve body, the gas cap valve also comprises a supporting block, the lower end of the valve core is fixedly arranged with the supporting block, the bottom surface of the supporting block is flush with the bottom surface of the valve body, and an air inlet channel is arranged between the supporting block and the cavity; the supporting shoe includes spacing face, including the spacing groove in the valve body, the spacing groove will cavity and outside intercommunication, supporting shoe and spacing groove sliding connection, the spacing face of supporting shoe and the internal surface butt in spacing groove still include the gasket, be equipped with the filter screen in the gasket. The utility model adds the filter screen in the gasket, so that impurities are difficult to enter the valve body when the valve works, thereby effectively avoiding the valve core from being blocked by the impurities; and the limiting groove in the valve body not only plays a role in guiding, but also is communicated with the outside, so that impurities can be gathered outside the valve body, and small impurities are prevented from being gathered on the valve core.

Description

Gas cap valve with filtering function

Technical Field

The utility model relates to a gas overhead valve that uses among the mould field, especially thin wall plastic mold.

Background

In the plastic injection mold, after the product is injection molded, most of the products are demoulded by using a blowing mode, and a common air top valve is used for realizing the blowing function. In the prior art, a gas cap valve generally comprises a valve body and a valve core, wherein a cavity is arranged in the valve body, and the valve core is arranged in the cavity, so that the valve core can move up and down in the valve body. The upper part of the valve core is generally provided with a conical sealing head, the lower part of the valve core is hidden in the cavity, the upper end of the cavity of the valve body is provided with a conical step surface, the valve core is sleeved with a return spring, and the return spring provides pressure, so that the upper end of the cavity is tightly covered by the sealing head of the valve core. When the valve body is used, the valve body is installed in a mold, when injection molding is completed, air is ventilated into the mold, air acts on the bottom of the valve body, upward pressure is generated on the valve core, the pressure of the spring is overcome by air pressure, the valve core is forced to move upwards, the cavity is opened, the air is discharged from the upper end of the gas cap valve, and therefore a product which is subjected to injection molding is blown out.

However, in the working process, because the gas circuit inevitably has some impurity and piece, after these impurity entered the gas cap valve, gather in the inside of gas cap valve, can make the sealing head can't close completely, and during operation, molten state's plastics can enter into the inside of gas cap valve to destroy whole gas cap valve. When the gas cap valve is damaged, the product cannot be blown out.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take filterable gas top valve to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.

The utility model provides a solution of its technical problem is: the gas cap valve with the filter comprises a valve body, a valve core and a supporting block, wherein a cavity which is communicated up and down is formed in the valve body, the valve core is installed in the cavity, the supporting block is installed in the cavity, the lower end of the valve core is fixedly installed with the supporting block, the bottom surface of the supporting block is flush with the bottom surface of the valve body, and an air inlet channel is formed between the supporting block and the cavity; the supporting shoe includes spacing face, including the spacing groove in the valve body, the spacing groove will cavity and outside intercommunication, supporting shoe and spacing groove sliding connection, the spacing face of supporting shoe and the internal surface butt in spacing groove still include the gasket, the bottom of valve body is arranged in to the gasket, be equipped with the filter screen in the gasket.

The utility model has the advantages that: the utility model adds the filter screen in the gasket, so that impurities are difficult to enter the valve body when the valve works, thereby effectively avoiding the valve core from being blocked by the impurities; and the limiting groove in the valve body not only plays the role of guiding, but also communicates with the outside of the valve body, so that impurities can be gathered outside the valve body. The filter screen is used for isolating impurities larger than the filter mesh, and most of the impurities smaller than the filter mesh pass through the opened valve body gap and are then discharged, so that the small impurities are prevented from being accumulated on the valve core.

As a further improvement of the above technical solution, the valve body includes an upper portion and a lower portion, an outer diameter of the lower portion is smaller than an outer diameter of the upper portion, and the limit groove is disposed on the lower portion. The lower part of the valve body is small, so that the valve body is convenient to install.

As a further improvement of the technical scheme, the cross section of the supporting block is triangular, the cavity comprises three limiting grooves, and three corners of the supporting block are abutted to the limiting grooves.

As a further improvement of the above technical solution, the gasket is integrally formed with the filter screen. The integrally formed filter screen has higher strength.

As a further improvement of the technical scheme, a compression spring is further arranged in the cavity and sleeved outside the valve core, one end of the compression spring is abutted with the supporting block, and the other end of the compression spring is abutted with the valve body.

As a further improvement of the technical scheme, the upper end of the valve core is in an inverted cone shape, and the upper end of the cavity is also in an inverted cone shape.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

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

fig. 2 is an exploded view of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. The preferred embodiment of the present invention is shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution. Meanwhile, all technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1 to 2, the filtered gas cap valve comprises a valve body 100 and a valve core 200, wherein a cavity 110 which is through up and down is formed in the valve body 100, the valve core 200 is installed in the cavity 110, the gas cap valve further comprises a supporting block 300, the supporting block 300 is installed in the cavity 110, the lower end of the valve core 200 is fixedly installed with the supporting block 300, preferably, a positioning hole is formed in the supporting block 300, an insertion block is arranged at the lower end of the valve core 200, the insertion block is tightly inserted into the positioning hole, the bottom surface of the supporting block 300 is flush with the bottom surface of the valve body 100, and an air inlet channel is formed between the supporting block 300 and the cavity 110; the supporting block 300 comprises a limiting surface 310, the valve body 100 comprises a limiting groove 120, the limiting groove 120 communicates the cavity 110 with the outside, the supporting block 300 is connected with the limiting groove 120 in a sliding mode, the limiting surface 310 of the supporting block 300 is abutted to the inner surface of the limiting groove 120, the supporting block further comprises a gasket 400, the gasket 400 is arranged at the bottom of the valve body 100, and a filter screen 410 is arranged in the gasket 400.

Further, in a preferred embodiment, the valve body 100 includes an upper portion 130 and a lower portion 140, the outer diameter of the lower portion 140 is smaller than the outer diameter of the upper portion 130, and the limiting groove 120 is disposed on the lower portion 140.

Further, as a preferred embodiment, the cross section of the supporting block 300 is triangular, the cavity 110 includes three limiting grooves 120, and three corners of the supporting block 300 abut against the limiting grooves 120.

In a further preferred embodiment, the gasket 400 is integrally formed with the filter screen 410.

In a further preferred embodiment, a compression spring 500 is further disposed in the cavity 110, the compression spring 500 is sleeved outside the valve core 200, one end of the compression spring 500 abuts against the support block 300, and the other end abuts against the valve body 100.

In a further preferred embodiment, the upper end of the valve core 200 is reverse tapered, and the upper end of the cavity 110 is also reverse tapered.

When the filter works, the gas cap valve to be filtered is assembled. Is placed on the mounting hole of the die. At this time, the gasket 400 is placed at the lowermost portion, and then the valve body 100 rests on the gasket 400. Wherein the upper part of the valve body is in interference fit with the mounting hole. After the injection molding of the mold is completed, the air is introduced into the mounting hole, the air passes through the filter screen and reaches the bottom of the valve body 100, then the air acts on the supporting block 300, so that the supporting block 300 slides up and down relative to the valve body 100, the valve core 200 is driven to move up and down, and when the valve core 200 is opened upwards, the air can be discharged from the top of the valve body 100 and acts on a product, so that the product is discharged.

When impurities exist in the gas, the impurities with larger particles are treated on the gas channel due to the action of the filter screen. While impurities with smaller particles may pass through the filter screen, since the limiting groove 120 of the lower portion of the valve body 100 is communicated with the mounting hole, the impurities are discharged from the limiting groove 120 to the mounting hole when passing through the cavity 110. And a part of the impurities is directly discharged from the valve body, so that the impurities do not enter the end of the valve element 200. Thereby effectively reducing the occurrence of clogging of the valve cartridge 200 by foreign substances.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims (6)

1. The utility model provides a take filterable gas cap valve, includes valve body, case, be equipped with the cavity that link up from top to bottom in the valve body, the case is installed in the cavity, its characterized in that: the valve body is characterized by further comprising a supporting block, wherein the supporting block is arranged in the cavity, the lower end of the valve core is fixedly arranged with the supporting block, the bottom surface of the supporting block is flush with the bottom surface of the valve body, and an air inlet channel is arranged between the supporting block and the cavity; the supporting shoe includes spacing face, including the spacing groove in the valve body, the spacing groove will cavity and outside intercommunication, supporting shoe and spacing groove sliding connection, the spacing face of supporting shoe and the internal surface butt in spacing groove still include the gasket, the bottom of valve body is arranged in to the gasket, be equipped with the filter screen in the gasket.

2. The filtered gas cap valve of claim 1, wherein: the valve body comprises an upper portion and a lower portion, the outer diameter of the lower portion is smaller than that of the upper portion, and the limiting groove is formed in the lower portion.

3. The filtered gas cap valve of claim 1, wherein: the cross-section of the supporting block is triangular, the cavity comprises three limiting grooves, and three corners of the supporting block are abutted to the limiting grooves.

4. The filtered gas cap valve of claim 1, wherein: the gasket and the filter screen are integrally formed.

5. The filtered gas cap valve of claim 1, wherein: and a compression spring is also arranged in the cavity, the compression spring is sleeved outside the valve core, one end of the compression spring is abutted against the supporting block, and the other end of the compression spring is abutted against the valve body.

6. The filtered gas cap valve of claim 1, wherein: the upper end of the valve core is in an inverted cone shape, and the upper end of the cavity is also in an inverted cone shape.

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