CN114413045A - Automatic pressure regulating valve for airtight box - Google Patents

Automatic pressure regulating valve for airtight box Download PDF

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Publication number
CN114413045A
CN114413045A CN202210032277.7A CN202210032277A CN114413045A CN 114413045 A CN114413045 A CN 114413045A CN 202210032277 A CN202210032277 A CN 202210032277A CN 114413045 A CN114413045 A CN 114413045A
Authority
CN
China
Prior art keywords
valve seat
pressure
box body
pressure valve
airtight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210032277.7A
Other languages
Chinese (zh)
Inventor
徐光伦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Guangneng Zhenyi Technology Co ltd
Original Assignee
Chongqing Guangneng Zhenyi Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Guangneng Zhenyi Technology Co ltd filed Critical Chongqing Guangneng Zhenyi Technology Co ltd
Priority to CN202210032277.7A priority Critical patent/CN114413045A/en
Publication of CN114413045A publication Critical patent/CN114413045A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
    • F16K17/19—Equalising valves predominantly for tanks
    • F16K17/196—Equalising valves predominantly for tanks spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves

Abstract

The invention discloses an automatic pressure regulating valve for an airtight box, which comprises a shell fixed on the airtight box in a sealing manner, wherein a gas channel and a partition plate which are communicated with a box body and the outside are arranged in the shell, and a negative pressure valve seat and a positive pressure valve seat which are distributed on two sides of the partition plate; when the external pressure is greater than the internal pressure of the box body and the difference between the internal pressure and the external pressure in the box body reaches a set value, the negative pressure valve seat is opened, and the return pieces are arranged among the negative pressure valve seat, the positive pressure valve seat and the shell. The invention can effectively ensure the timely pressure relief of the box body, avoid the damage of the packing box, keep the internal and external pressure balance of the box body and has wide application prospect.

Description

Automatic pressure regulating valve for airtight box
Technical Field
The invention relates to the technical field of high-impact-resistance plastic airtight boxes, in particular to an automatic pressure regulating valve for an airtight box.
Background
The high impact plastic airtight box is a special purpose packing box which must be able to withstand the impact force generated by a high drop fall under full load, keep the main structure intact and effectively protect the contents.
High anti-impact plastics airtight case is equipped with airtight valve usually to can balance the internal and external pressure differential of box when external pressure differential ratio is great in the box, but current airtight valve is manual opening, must the manual work operate, and self does not possess positive negative pressure and opens the function automatically, leads to very easily when external pressure differential ratio is great in the box, can't in time release, can not prevent effectively that the packing box from damaging, thereby loses protection function such as dampproofing, waterproof, dustproof.
Disclosure of Invention
The invention provides an automatic pressure regulating valve for an airtight box, aiming at the problems in the related art and aiming at overcoming the technical problems in the prior related art.
Therefore, the invention adopts the following specific technical scheme:
an automatic pressure regulating valve for an airtight box comprises a shell which is hermetically fixed on the airtight box, wherein a gas channel and a partition plate which are communicated with a box body and the outside are arranged in the shell, and a negative pressure valve seat and a positive pressure valve seat which are distributed on two sides of the partition plate, the negative pressure valve seat and the positive pressure valve seat jointly divide the gas channel into a gas outlet channel and a gas inlet channel, the negative pressure valve seat is tightly pressed on the partition plate in a sliding mode and can block the gas inlet channel, the positive pressure valve seat is tightly pressed on the partition plate in a sliding mode and can block the gas outlet channel, and when the internal pressure of the box body is greater than the external pressure and the internal pressure difference of the box body reaches a set value, the positive pressure valve seat is opened; when the external pressure is greater than the internal pressure of the box body and the difference between the internal pressure and the external pressure in the box body reaches a set value, the negative pressure valve seat is opened, and the return pieces are arranged among the negative pressure valve seat, the positive pressure valve seat and the shell.
In a possible design, the return element comprises a spring, one end of which abuts against the negative pressure valve seat or the positive pressure valve seat, and the other end of which is fixed to the housing.
In a possible design, the return member further comprises a spring seat fixed to the housing, and the other end of the spring is mounted on the spring seat.
In a possible design, the positive pressure valve seat is provided with a first through hole in the center.
In one possible embodiment, the spring plate is provided with a second through-opening.
In a possible design, the box body is further provided with a valve cover in threaded connection with the box body, and the valve cover is located at the outer end of the outer shell and fixed with the outer shell.
In a possible design, the outer wall of the outer shell is provided with a rubber sealing ring which is sealed with the box body.
In one possible design, at least two rubber sealing rings are arranged and distributed at intervals.
Compared with the prior art, the invention has the beneficial effects that:
the pressure regulating valve is a mechanical seal valve body, and can realize automatic and manual pressure regulating functions; the valve body consists of two main components, namely a negative pressure valve and a positive pressure valve, and the negative pressure valve can be automatically opened when the external pressure is about 30kpa higher than the pressure of the box body; the positive pressure valve automatically opens when the internal pressure of the tank is about 30kpa greater than the external pressure. With valve gap clockwise turning, can fix whole air-vent valve on the box, with the valve gap anticlockwise unscrew, can extract the valve body from the box, make the box interior outer communicating to realize manual pressure regulating function, the structural design of this application is ingenious, can effectively ensure the timely pressure release of box, avoids the packing box to damage, keeps the internal and external pressure balance of box, has wide application prospect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram showing the structure of an embodiment of an automatic pressure regulating valve for an airtight box according to the present invention;
FIG. 2 shows a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic diagram showing the air flow path for implementing negative pressure automatic regulation according to the present invention;
FIG. 4 is a schematic representation of the air flow path for implementing positive pressure auto-regulation in accordance with the present invention;
FIG. 5 is a state diagram illustrating the automatic negative pressure regulation of the present invention;
fig. 6 shows a state diagram of the present invention for implementing positive pressure auto-regulation.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.
In the description of the present invention, it should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the technical disclosure of the present invention without affecting the function and the achievable purpose of the present invention. While the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations and positional relationships illustrated in the drawings, which are used for convenience in describing the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting of the 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Description of reference numerals: the valve comprises a negative pressure valve seat 5, a positive pressure valve seat 6, a rubber sealing ring 7, a valve cover 8, a second spring 9, a second rubber pad 10, a first rubber pad 11, a first spring 12, a shell 13, a first spring seat 14 and a second spring seat 15.
As shown in fig. 1 to 6, an automatic pressure regulating valve for an airtight box includes a case 13 hermetically fixed to the airtight box, and the case 13 is made of engineering plastic, lightweight, and strong.
A gas channel communicating the box body with the outside, a partition plate, a negative pressure valve seat 5 and a positive pressure valve seat 6 distributed on two sides of the partition plate are arranged in the shell 13, the partition plate, the negative pressure valve seat 5 and the positive pressure valve seat 6 jointly divide the gas channel into an air outlet channel and an air inlet channel, the negative pressure valve seat 5 is tightly propped against the partition plate in a sliding manner and can block the air inlet channel, the positive pressure valve seat 6 is tightly propped against the partition plate in a sliding manner and can block the air outlet channel, in order to enhance the blocking capability of the negative pressure valve seat 5 and the positive pressure valve seat 6, a first rubber pad 11 and a second rubber pad 10 are respectively arranged on the negative pressure valve seat 5 and the positive pressure valve seat 6 so as to enhance the tightness when the negative pressure valve seat 5 and the positive pressure valve seat 6 are tightly propped against the partition plate, return pieces I and a second return piece are respectively arranged between the negative pressure valve seat 5 and the positive pressure valve seat 6 and the shell 13, namely the return pieces are provided with two groups, the first return piece comprises a first spring 12 and a first spring 12 seat fixed with the left end of the shell 13, one end of a first spring 12 is abutted against the negative pressure valve seat 5, the other end of the first spring 12 is fixedly arranged on the first spring 12 seat, and the first spring 12 is used for tightly pushing the negative pressure valve seat 5 against the partition plate; the second return member comprises a second spring 9 and a second spring 9 seat fixed to the right end of the outer shell 13, one end of the second spring 9 abuts against the positive pressure valve seat 6, the other end of the second spring 9 is fixedly mounted on the second spring 9 seat, the second spring 9 is used for tightly pushing the positive pressure valve seat 6 against the partition plate, and the first spring 12 and the second spring 9 are made of stainless steel wires 06Cr19Ni10 and have the characteristics of corrosion resistance, high temperature resistance, low temperature resistance and the like.
As shown in fig. 4 and 6, when the internal pressure of the tank is greater than the external pressure and the difference between the internal pressure and the external pressure in the tank reaches a set value, the positive pressure valve seat 6 is opened, so that the gas overflows from the tank, and the positive pressure automatic adjustment is realized; as shown in fig. 3 and 5, when the external pressure is greater than the internal pressure of the tank and the difference between the internal pressure and the external pressure inside the tank reaches a set value, the negative pressure valve seat 5 is opened, the gas enters the tank, and the negative pressure is automatically adjusted, wherein the set value is set to 30KPa in the embodiment; the precision is high and can reach +/-6 kpa; and automatic and manual adjustment functions are realized simultaneously.
In a possible design, the center of the positive pressure valve seat 6 is provided with a first through hole, the second spring 9 seat is provided with a second through hole, the first spring 12 seat is provided with a third through hole, and the arrangement of the first through hole to the third through hole is convenient for the circulation of gas inside and outside the box body from the gas inlet channel and the gas outlet channel.
In a possible design, the pressure regulating valve further comprises a valve cover 8 in threaded connection with the box body, the valve cover 8 is located at the outer end of the shell 13 and fixed with the shell 13, the valve cover 8 is rotated clockwise, the whole pressure regulating valve can be fixed on the box body, the valve cover 8 is unscrewed anticlockwise, and the valve body can be pulled out of the box body, so that the inside and the outside of the box body are communicated, and the function of manually regulating pressure is achieved.
In a possible design, be equipped with the rubber seal 7 with box body seal on the shell 13 outer wall, rubber seal 7 sets up two and interval distribution at least, and rubber seal 7 adopts silica gel to make, has improved the seal between box body and the air-vent valve greatly.
Compared with the prior art, the invention has the beneficial effects that:
the pressure regulating valve is a mechanical seal valve body, and can realize automatic and manual pressure regulating functions; the valve body consists of two main components, namely a negative pressure valve and a positive pressure valve, and the negative pressure valve can be automatically opened when the external pressure is about 30kpa higher than the pressure of the box body; the positive pressure valve automatically opens when the internal pressure of the tank is about 30kpa greater than the external pressure. With 8 clockwise rotations of valve gap, can fix whole air-vent valve on the box, with 8 anticlockwise unscrews of valve gap, can extract the valve body from the box, make the box interior outer communicating to each other to realize manual pressure regulating function, the structural design of this application is ingenious, can effectively ensure the timely pressure release of box, avoids the packing box to damage, keeps the internal and external pressure balance of box, has wide application prospect.
While, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood by one skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. An automatic pressure regulating valve for an airtight box comprises a shell which is hermetically fixed on the airtight box, and is characterized in that a gas channel and a partition plate which are communicated with a box body and the outside are arranged in the shell, and a negative pressure valve seat and a positive pressure valve seat which are distributed on two sides of the partition plate, wherein the gas channel is divided into a gas outlet channel and a gas inlet channel by the partition plate, the negative pressure valve seat slides and abuts against the partition plate and can block the gas inlet channel, the positive pressure valve seat slides and abuts against the partition plate and can block the gas outlet channel, and when the internal pressure of the box body is greater than the external pressure and the difference between the internal pressure and the external pressure in the box body reaches a set value, the positive pressure valve seat is opened; when the external pressure is greater than the internal pressure of the box body and the difference between the internal pressure and the external pressure in the box body reaches a set value, the negative pressure valve seat is opened, and the return pieces are arranged among the negative pressure valve seat, the positive pressure valve seat and the shell.
2. The automatic pressure regulating valve for airtight box according to claim 1 wherein said return member comprises a spring having one end abutting against the negative pressure valve seat or the positive pressure valve seat and the other end fixed to the housing.
3. The automatic pressure regulating valve for airtight box according to claim 2 wherein said return member further comprises a spring seat fixed to the housing, the other end of the spring being mounted on the spring seat.
4. The automatic pressure regulating valve for airtight box according to any one of claims 1 to 3 wherein said positive pressure valve seat is centrally provided with a first through hole.
5. The automatic pressure regulating valve for airtight tank as claimed in claim 3, wherein the spring seat is provided with a second through hole.
6. The automatic pressure regulating valve for airtight box according to any one of claims 1, 2, 3 or 5, further comprising a valve cap threadedly connected to the box body, the valve cap being located at the outer end of the housing and fixed to the housing.
7. The automatic pressure regulating valve for airtight box according to claim 6 wherein, the outer wall of said outer casing is provided with a rubber sealing ring for sealing with the box body.
8. The automatic pressure regulating valve for airtight tank as defined in claim 7, wherein said rubber sealing rings are provided in at least two spaced apart positions.
CN202210032277.7A 2022-01-12 2022-01-12 Automatic pressure regulating valve for airtight box Pending CN114413045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210032277.7A CN114413045A (en) 2022-01-12 2022-01-12 Automatic pressure regulating valve for airtight box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210032277.7A CN114413045A (en) 2022-01-12 2022-01-12 Automatic pressure regulating valve for airtight box

Publications (1)

Publication Number Publication Date
CN114413045A true CN114413045A (en) 2022-04-29

Family

ID=81273844

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210032277.7A Pending CN114413045A (en) 2022-01-12 2022-01-12 Automatic pressure regulating valve for airtight box

Country Status (1)

Country Link
CN (1) CN114413045A (en)

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