CN221300226U - Plastic exhaust valve and sealing bag - Google Patents

Abstract

The application discloses a plastic exhaust valve and a sealing bag, which comprise a valve seat with an exhaust cavity, an air inlet, an exhaust hole, a diaphragm and an elastic ventilation component, wherein the elastic ventilation component is arranged in the exhaust cavity; a plurality of elastic fibers are fixedly connected to the top surface of the felt pad, the top end of the elastic fibers are abutted to the top of the exhaust cavity, in daily use, the elastic fibers support the felt pad, the membrane is pressed on the bottom surface of the exhaust cavity to block the air inlet, when the sealing bag is extruded, the elastic fibers are bent, air in the sealing bag jacks up the membrane, the air enters the exhaust cavity through the air inlet and is exhausted from the exhaust hole, when the air pressure in the sealing bag is not greater than the atmospheric pressure, the elastic fibers are restored, the felt pad is lowered, the air inlet is plugged again by the membrane, and the technical scheme has no hidden danger of demagnetization and is high in stability.

Description

Plastic exhaust valve and sealing bag

Technical Field

The utility model relates to a plastic exhaust valve and a sealing bag.

Background

All valve bags (including woven cloth valve bags, multi-layer paper valve bags, heavy film valve bags and a series of valve bags made of different materials) are widely applied to the fields of chemical industry, construction and the like. The filling process is adopted, so that air is required to be removed in time to ensure the filling efficiency, and the specification of the exhaust hole is strictly selected so that raw materials cannot leak out.

Due to the above-mentioned needs, bags with vent valves are emerging on the market;

The packaging bag with the one-way exhaust valve comprises a packaging bag, a valve seat, an exhaust cavity, a low convex part, a through hole, a plurality of baffle plates, a sealing groove, a diaphragm, a thin sheet part, an abutting part and an exhaust hole, wherein the diaphragm can be separated from the bottom surface of the exhaust cavity through the cooperation of a group of small magnets, so that the exhaust is realized, the bottom surface of the exhaust cavity is re-abutted after the exhaust, and the sealing is realized, but the defects are that:

1. The valve seat and the inner wall of the packaging bag are fixedly connected through glue or high-temperature ironing connection, so that the installation is inconvenient, and the connection firmness is difficult to ensure;

2. the magnet can demagnetize or demagnetize in many scenes, and the hidden trouble of failure exists, influences the stability of product.

Disclosure of Invention

The utility model aims to solve one of the technical problems existing in the prior art.

The application provides a plastic exhaust valve, which comprises a valve seat with an exhaust cavity, an air inlet, an exhaust hole, a diaphragm and also comprises:

an elastic ventilation member provided in the exhaust chamber;

Wherein, the diaphragm sets up between elastic ventilative part bottom and exhaust chamber bottom.

The elastic ventilation member includes:

A felt pad disposed in the exhaust chamber;

And the elastic fibers are fixedly connected to the top surface of the felt pad, and the top ends of the elastic fibers are abutted with the top of the exhaust cavity.

The elastic ventilation component further comprises:

And the connecting layer is connected with each elastic fiber in a high-temperature melting mode and is connected with the felt pad through viscose.

The felt pad and the diaphragm have a cross-sectional diameter smaller than the cross-sectional diameter of the exhaust chamber.

The valve seat includes:

the valve housing comprises a concave part and an inner compression ring, and is provided with an air inlet hole;

the valve plate comprises a plate body and a retaining ring, and is provided with an exhaust hole;

Wherein, the exhaust chamber is located between buckle and the depressed part.

The valve seat further includes:

A buckling ring groove arranged in the inner peripheral wall of the concave part;

the semicircular convex ring is fixedly arranged on the peripheral wall of the retaining ring;

The semicircular convex ring can be buckled with the buckling ring groove.

The valve seat further includes:

a seal groove provided on the surface of the inner press ring/plate body;

And the convex blocks are fixedly connected to the surfaces of the plate body/the inner pressure ring and are arranged at intervals along the circumferential direction and correspond to the sealing grooves.

Each lug is conical, and the tip is towards the sealing groove.

The sealing grooves are arranged in a pair and concentrically, and corresponding bumps are additionally arranged on the surface of the inner pressing ring/plate body.

The sealing bag also comprises the plastic exhaust valve.

The beneficial effects of the utility model are as follows:

1. The pressure is provided for the membrane by the arrangement of the membrane, the felt gasket, the elastic fibers and the connecting layer, so that the air inlet hole can be opened and closed for sealing, and the product stability is strong;

2. The plastic exhaust valve is convenient to disassemble and assemble by the arrangement of the concave part, the inner compression ring, the plate body, the retaining ring, the buckling ring groove and the semicircular convex ring, and is firm in connection and convenient to recycle;

3. Through the setting of lug and a pair of seal groove, form multichannel seal between disk seat and sealing bag, prevent that sealing bag inside material from leaking.

Drawings

FIG. 1 is a three-dimensional exploded view of a plastic vent valve in accordance with an embodiment of the application;

Fig. 2 is an internal construction view of an assembled state of a plastic exhaust valve in an embodiment of the present application.

Reference numerals

1-Exhaust cavity, 2-valve seat, 21-concave part, 22-inner compression ring, 23-plate body, 24-clasp ring, 25-snap ring groove, 26-semicircle convex ring, 27-sealing groove, 28-bump, 3-air inlet, 4-exhaust hole, 5-diaphragm, 6-elastic ventilation component, 61-felt pad, 62-elastic fiber and 63-connecting layer.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims, 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 data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The server provided by the embodiment of the application is described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.

Example 1:

As shown in fig. 1 to 2, the embodiment of the present application provides a plastic exhaust valve, which comprises a valve seat 2 with an exhaust chamber 1, an air inlet hole 3, an air outlet hole 4, and a diaphragm 5, and further comprises an elastic ventilation member 6 disposed in the exhaust chamber 1, and the diaphragm 5 is disposed between the bottom of the elastic ventilation member 6 and the bottom of the exhaust chamber 1.

Further, the elastic ventilation means 6 includes a felt pad 61 provided in the exhaust chamber 1; a plurality of elastic fibers 62 are fixedly connected to the top surface of the felt pad 61, and the top ends of the elastic fibers are abutted against the top of the exhaust cavity 1.

Further, the elastic ventilation means 6 further comprises a connection layer 63 connected to each elastic fiber 62 by high temperature melting and connected to the felt pad 61 by adhesive.

Preferably, felt pad 61 and membrane 5 have a cross-sectional diameter that is smaller than the cross-sectional diameter of exhaust chamber 1.

In this embodiment of the present application, since the above-mentioned structure is adopted, the plurality of elastic fibers 62 provide support for the felt pad 61, the membrane 5 is pressed against the bottom surface of the air discharge chamber 1, the air intake hole 3 is blocked, when the sealing bag is pressed, each elastic fiber 62 is bent, the air in the inside thereof lifts up the membrane 5, enters the air discharge chamber 1 through the air intake hole 3 and is discharged from the air discharge hole 4, and when the air pressure in the sealing bag is not more than the atmospheric pressure, each elastic fiber 62 is restored, the felt pad 61 is lowered, and the air intake hole 3 is blocked again by the membrane 5.

Example 2:

As shown in fig. 1 to 2, in this embodiment, in addition to including the structural features of the previous embodiment, the valve seat 2 includes a valve housing including a recess 21 and an inner pressure ring 22 with an intake port 3; the valve plate comprises a plate body 23 and a retaining ring 24, and is provided with an exhaust hole 4, and the exhaust cavity 1 is positioned between the retaining ring 24 and the concave part 21.

Further, the valve seat 2 further includes a snap ring groove 25 provided in the inner peripheral wall of the recess 21; the semicircular convex ring 26 is fixedly arranged on the outer peripheral wall of the retaining ring 24, and the semicircular convex ring 26 can be buckled with the buckling ring groove 25.

Further, the valve seat 2 further comprises a sealing groove 27, which is arranged on the surface of the inner compression ring 22/the plate body 23; the plurality of protruding blocks 28 are fixedly connected to the surface of the plate body 23/the inner pressure ring 22, are arranged at intervals along the circumferential direction and correspond to the sealing grooves 27.

Preferably, each of the projections 28 is conical with the tip facing the seal groove 27.

Preferably, the sealing grooves 27 are provided with a pair of concentric grooves, and corresponding lugs 28 are additionally arranged on the surface of the inner pressing ring 22/the plate body 23.

Meanwhile, the sealing bag comprises a bag body with a mounting hole and the plastic exhaust valve.

In this embodiment of the present application, since the above-mentioned structure is adopted, when the plastic exhaust valve is installed, the diaphragm 5 and the elastic ventilation member 6 are placed in the recess 21 so that the inner pressure ring 22 is closely attached to the inner wall of the sealing bag, the connection hole is aligned with the recess 21, then the valve plate is taken out, the grommet 24 is inserted into the recess 21 through the installation hole, and then the valve housing and the valve plate are mutually pressed so that the semicircular convex ring 26 is buckled into the buckling ring groove 25, at this time, the side wall of the bag body is pushed into the corresponding sealing groove 27 by the tip of each of the projections 28, so that the sealing is formed between the side wall of the bag body and the inner pressure ring 22 and the plate body 23.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims (9)

1. A plastic exhaust valve, comprising a valve seat (2) with an exhaust cavity (1), an air inlet hole (3), an exhaust hole (4) and a membrane (5), characterized in that:

An elastic ventilation member (6) provided in the exhaust chamber (1);

Wherein the membrane (5) is arranged between the bottom of the elastic ventilation component (6) and the bottom of the exhaust cavity (1);

the elastic ventilation member (6) comprises:

a felt pad (61) provided in the exhaust chamber (1);

and a plurality of elastic fibers (62) are fixedly connected to the top surface of the felt pad (61), and the top end of the elastic fibers is abutted to the top of the exhaust cavity (1).

2. A plastic vent valve according to claim 1, wherein the resilient venting member (6) further comprises:

And a connection layer (63) connected to each of the elastic fibers (62) by high-temperature melting and connected to the felt sheet (61) by adhesive.

3. A plastic vent valve as defined in claim 1, wherein:

the felt pad (61) and the membrane (5) have a cross-sectional diameter smaller than the cross-sectional diameter of the exhaust chamber (1).

4. A plastic exhaust valve according to any one of claims 1-3, characterized in that the valve seat (2) comprises:

A valve housing including a recess (21) and an inner pressure ring (22) with an air intake hole (3);

the valve plate comprises a plate body (23) and a retaining ring (24) with an exhaust hole (4);

Wherein, the exhaust cavity (1) is positioned between the retaining ring (24) and the concave part (21).

5. A plastic exhaust valve according to claim 4, characterized in that the valve seat (2) further comprises:

A snap ring groove (25) provided in the inner peripheral wall of the recess (21);

A semicircular convex ring (26) fixedly arranged on the outer peripheral wall of the retaining ring (24);

wherein, the semicircle convex ring (26) can be buckled with the buckling ring groove (25).

6. A plastic exhaust valve according to claim 4, characterized in that the valve seat (2) further comprises:

A sealing groove (27) which is arranged on the surface of the inner pressure ring (22)/the plate body (23);

And a plurality of protruding blocks (28) are fixedly connected to the surface of the plate body (23)/the inner pressing ring (22), are arranged at intervals along the circumferential direction and correspond to the sealing grooves (27).

7. A plastic vent valve as defined in claim 6, wherein:

Each projection (28) is conical, and the tip of the projection faces the sealing groove (27).

8. A plastic vent valve as defined in claim 6, wherein:

The sealing grooves (27) are arranged in a pair and concentrically, and corresponding protruding blocks (28) are additionally arranged on the surfaces of the inner pressing ring (22)/the plate body (23).

9. A sealed bag comprising a bag body with a mounting hole, further comprising:

a plastic vent valve as in any one of claims 1 to 8.