CN211132309U - Filter paper type bidirectional air exchange system - Google Patents

Abstract

The utility model relates to a two-way air exchange system of filter paper formula is applied to medical instrument disinfection and isolation device field. The protective cover comprises a protective cover and a base which are connected through a screwing clamping groove, the base comprises a barrel body with an opening at the upper end, a folded edge is arranged at the top end of the barrel body in an outward extending mode, the screwing clamping groove is formed between the folded edge and the protective cover, a base vent hole is formed in the bottom of the barrel body, a protective cover vent hole is formed in the protective cover, and the protective cover vent hole is located on the inner side of the; the inner wall of the upper part of the barrel body is clamped with a bidirectional filter paper support, and the bidirectional filter paper support is provided with a bidirectional filter paper support vent hole; two-way filter paper supports and is equipped with filter paper formula sealing system that takes a breath between the staving bottom, the utility model discloses simple structure is ingenious, and operation convenient to use, the dismouting maintenance is simple, has realized closing the chucking soon through closing the draw-in groove soon and has sealed, and the leakproofness is good, safe and reliable, and aseptic memory nature is good, can two-way take a breath.

Description

Filter paper type bidirectional air exchange system

Technical Field

The utility model relates to a two-way air exchange system of filter paper formula is applied to medical instrument disinfection and isolation device field.

Background

In the medical field, the sterilization box is a reusable hard packaging container, and has been gradually accepted by various medical institutions due to the advantages of simple packaging operation, low use cost, good sterile storage performance, safe transportation process and the like, and more sterilization supply centers have or are gradually replacing the traditional packaging mode with the sterilization box. The filter paper type sterilization box gas bidirectional circulation device at the present stage is complex in design structure, complex in assembly process, low in efficiency, difficult to replace filter paper and maintain and disassemble at the later stage, and cannot completely meet the requirements of repeatedly using 4.4.6 materials, design, structure and surface smoothness in a sterilization container for a steam sterilizer in the eighth part of YYT0698.8-2009 packaging material for finally sterilizing medical instruments so as to be convenient for internal and external sterilization and cleaning.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcome prior art's not enough, provide a two-way air exchange system of filter paper formula, simple structure is ingenious, operation simple to use is convenient, and the dismouting maintenance is simple, has realized closing the chucking soon through closing the draw-in groove soon and has sealed, and the leakproofness is good, safe and reliable, and aseptic memory nature is good, can two-way take a breath.

The utility model discloses a filter paper formula sterilization box, including box body and lid, box body and lid pass through the hinge subassembly and connect, are equipped with at least one upwards bellied step waterproof platform on the lid, clamp a set of filter paper formula two-way air exchange system through screwing in the draw-in groove at least on the waterproof platform, are equipped with screwing in the groove on the waterproof platform, the screwing in the inslot side is equipped with the blow vent, the filter paper formula two-way air exchange system clamps in screwing in the groove;

further preferably, the periphery of the encircling screwing groove is provided with a supporting rib protruding upwards, the periphery of the box cover is bent downwards to form an S shape, a box cover sealing groove corresponding to the box body is formed, and a box cover sealing rubber ring is arranged in the box cover sealing groove.

Further preferably, the hinge assembly includes a hinge plate, one side of the box cover is fixedly connected with the hinge plate, the hinge plate is connected with a hinge through a hinge shaft, the box body is fixedly provided with a heat-sensitive fixing plate and a heat-sensitive lock assembly corresponding to the hinge.

Preferably, the box body is provided with a label bracket, and the label bracket fixes and clamps a label through a label clamping groove; the label is inserted into the label clamping groove of the label support to be clamped, and the label does not fall off even the sterilization box inclines. The indicating card support is arranged on the box body, one end of the indicating card support is fixed with the clamping pressure plate through the pressure plate clamping groove, the pressure plate is arranged below the indicating card support, the pressure plate is fixed with the clamping indicating card pressure spring through the pressure plate clamping groove, and the indicating card pressure spring and the indicating card support are located on the same side of the pressure plate. Adopt and instruct the jump ring of card pressure to compress tightly the instruction card, the commonality is stronger, can be applicable to the instruction card that compresses tightly various sizes of various models. The pressing plate can be a steel wire pressing plate, and the steel wire pressing plate can be connected with the indicating card support through bolts or screws.

The filter paper type bidirectional ventilation system comprises a protective cover and a base which are connected through a rotary clamping groove, wherein the base comprises a barrel body with an upper end open, the top end of the barrel body extends outwards to form a folded edge, the rotary clamping groove is formed between the folded edge and the protective cover, the bottom of the barrel body is provided with a base vent hole, the protective cover is provided with a protective cover vent hole, and the protective cover vent hole is positioned on the inner side of the rotary clamping groove;

the inner wall of the upper part of the barrel body is clamped with a bidirectional filter paper support, and the bidirectional filter paper support is provided with a bidirectional filter paper support vent hole;

a filter paper type ventilation sealing system is arranged between the bidirectional filter paper support and the bottom of the barrel body, and comprises a bidirectional filter paper base, filter paper and a bidirectional filter paper pressing plate, wherein a support step is inwards arranged in the middle of the barrel body and used for supporting the bidirectional filter paper base, the top surface of the bidirectional filter paper base is matched with the bottom surface of the bidirectional filter paper support, the upper part of the bidirectional filter paper base is arranged in a hollow manner, the bidirectional filter paper pressing plate is clamped at the upper part of the bidirectional filter paper base through a clamping groove, a bidirectional filter paper base vent hole is formed in the bidirectional filter paper base, a pressing plate vent hole is formed in the bidirectional filter paper pressing plate, and; and filter paper is arranged between the bidirectional filter paper base and the bidirectional filter paper pressing plate.

Working process or working principle:

the filter paper type bidirectional air exchange system of the utility model is arranged on the filter paper type sterilization box which is used as a sterilization container; the filter paper type bidirectional air exchange system of the utility model can also be arranged on other sterilized containers.

Under the normal pressure state, namely when the external pressure of the container is equal to the internal pressure of the container, the filter paper can ensure that the inside of the container is a sterile barrier space at the moment due to the special structural principle of the filter paper, and the effectiveness of a sterile barrier system can be ensured;

when the external pressure of the container is higher than the internal pressure of the container, the external gas of the container enters the container through the filter paper, and the filter paper can prevent harmful microorganisms in the air from entering the container due to a special structural principle;

when the external pressure of the container is lower than the internal pressure of the container, the gas in the container can be discharged out of the box through the filter paper.

The filter paper formula sterilization box, can ensure the inside gaseous two-way circulation with the container outside gas of container.

Further preferably, a bidirectional filter paper base sealing groove is formed in the matching surface of the bidirectional filter paper base and the supporting step, and a large filter paper sealing rubber ring is arranged in the bidirectional filter paper base sealing groove.

Further preferably, the inner wall of the upper part of the bidirectional filter paper base is provided with a bidirectional filter paper base clamping groove, the bidirectional filter paper pressing plate is correspondingly provided with a pressing plate clamping table, and the pressing plate clamping table and the bidirectional filter paper base clamping groove are matched and clamped tightly.

Preferably, the rotary clamping groove comprises a bent protective cover rotary clamping table arranged on the bottom surface of the protective cover, and the protective cover rotary clamping table and the bottom surface of the protective cover form a protective cover rotary clamping groove; the base top surface is equipped with the form base of bending and closes the ka tai soon, and the base closes the ka tai soon and forms the base with the base top surface and closes the draw-in groove soon, and the base closes the ka tai soon and closes the draw-in groove mutually supporting setting with the protection casing, and the protection casing closes the ka tai soon and closes the draw-in groove mutually supporting setting with the base soon, and the base closes the ka tai soon, the protection casing closes the ka tai soon and closes the draw-.

Further preferably, the protective cover is provided with support protrusions at intervals downwards; the folded edge is provided with a sealing groove, a sealing rubber ring is arranged in the sealing groove, and the sealing groove and the sealing rubber ring are used for being matched with a container for sealing; the supporting protrusions and the sealing grooves are arranged on the outer sides of the screwing clamping grooves.

Further preferably, the bidirectional filter paper support outer edge is provided with an outward convex bidirectional filter paper support clamping table corresponding to the bidirectional filter paper support clamping table, a base clamping groove is formed in the inner wall of the upper portion of the barrel body of the base, and the bidirectional filter paper support clamping table and the base clamping groove are matched and clamped with each other.

Further preferably, a sealing support seat is arranged at the bottom of the protective cover downwards, and a sealing support groove is correspondingly formed in the bidirectional filter paper support.

Compared with the prior art, filter paper formula sterilization box's beneficial effect be:

1. the utility model can effectively prevent the condensed water from entering the sterilization box through the filter paper type bidirectional air exchange system by arranging the convex waterproof platform; during sterilization, or when the filter paper type sterilization box is just taken out of the sterilizer, condensed water may be generated on the filter paper type sterilization box;

2. through the mutual cooperation of hinge subassembly, temperature sensing fixed plate and temperature sensing lock subassembly, locking box body and lid, pressfitting lid sealing rubber ring forms box inner sealing space, has guaranteed aseptic barrier system's validity.

3. Through setting up bellied brace rod, filter paper formula sterilization box during the closed assembly sterilization, adjacent from top to bottom filter paper formula sterilization box between leave enough spaces, not only can avoid because the extrusion is right the two-way air exchange system of filter paper formula cause the damage, also can guarantee during the sterilization, filter paper formula sterilization box still can realize two-way taking a breath.

Compared with the prior art, the two-way air exchange system of filter paper formula beneficial effect be:

1. through setting up two-way filter paper clamp plate and the cooperation of two-way filter paper base and compressing tightly filter paper, ensure that filter paper is in good operating condition, can guarantee that the sterilization box is totally closed under the ordinary pressure, realized the good aseptic sealed protection state of ordinary pressure, aseptic memory nature is good, can two-way open the taking a breath under the malleation negative pressure, compress tightly the chucking through mechanical structure and seal, can be applicable to the pressure sterilization container.

2. Through setting up protection casing and base and mutually supporting and closing the draw-in groove soon, two-way filter paper clamp plate and two-way filter paper base draw-in groove cooperation chucking, the leakproofness is good, and the dismouting is simple and convenient, and later stage dismouting maintenance is simple and convenient, has reduced staff's maintenance work load, can keep the leakproofness through regularly changing filter paper, convenient to use, repeatedly usable is applicable to pressure steam sterilization.

3. The structure is simple and ingenious, the work is reliable, the disassembly is simple, and the cleaning is convenient.

Drawings

Figure 1 is a schematic structural view of an embodiment of the filter paper type sterilization box of the present invention,

figure 2 is a top view of figure 1,

figure 3 is a bottom view of figure 1,

figure 4 is a left side view of figure 1,

figure 5 is a schematic view of the structure of the box cover,

figure 6 is a left side view of figure 5,

figure 7 is an enlarged schematic view of a portion a of figure 5,

figure 8 is an enlarged view of the structure at B in figure 5,

figure 9 is an enlarged view of the structure at C in figure 5,

figure 10 is an enlarged view of the structure at D in figure 6,

figure 11 is a top view of figure 5,

figure 12 is a schematic cross-sectional view of E-E of figure 11,

figure 13 is a schematic view of the sign support structure,

figure 14 is a right side view of figure 13,

figure 15 is a schematic view of the structure of the sign holder,

figure 16 is a schematic cross-sectional view of the T-T of figure 15,

fig. 17 is a schematic structural view of an embodiment of the filter paper type bidirectional ventilation system according to the present invention, in which the external pressure of the container is equal to the internal pressure of the container;

fig. 18 is a second schematic structural view of an embodiment of the filter paper type bidirectional ventilation system of the present invention, in which the external pressure of the container is greater than the internal pressure of the container;

fig. 19 is a third schematic view of an embodiment of the filter paper type two-way ventilation system of the present invention, wherein the external pressure of the container is lower than the internal pressure of the container.

In the figure: 1. the device comprises a protective cover 2, a filter paper type sterilization box 3, a sealing rubber ring 4, a base 5, a bidirectional filter paper support 6, a bidirectional filter paper pressing plate 7, a bidirectional filter paper base 8, a filter paper large sealing rubber ring 9, filter paper 10 and a filter paper type bidirectional ventilation system;

1.1, a supporting protrusion 1.2, a protective cover screwing clamping groove 1.3, a protective cover screwing clamping table 1.4, a sealing supporting seat 1.5 and a protective cover vent hole;

2.1, a waterproof table 2.2, a screwing groove 2.3, a support groove 2.4, a vent hole 2.5, a box cover sealing rubber ring 2.6, a hinge plate 2.7, a hinge shaft 2.8, a hinge 2.9, a box body 2.10, a label support 2.11, a label 2.12, a heat-sensitive lock fixing plate 2.13, a heat-sensitive lock component 2.14, an indication card support 2.15, an indication card pressure spring 2.16, a steel wire pressure plate 2.17, a handle 2.18, a handle silica gel sleeve 2.19, a box cover 2.20, a support rib 2.21, a box cover sealing groove 2.22, a handle mounting groove B2.23, a limit step B2.24, a label clamping groove 2.25, a pressure plate clamping groove 2.26, a handle mounting groove A2.27 and a limit step A;

4.1, a sealing groove 4.2, a supporting step 4.3, a base vent hole 4.5, a base clamping groove 4.6, a base screwing clamping groove 4.7, a base screwing clamping table 4.8, a barrel body 4.9 and folded edges;

5.1, a bidirectional filter paper supporting vent hole 5.2, a bidirectional filter paper supporting clamping table 5.3 and a sealing supporting groove;

6.1, 6.2 of a clamp plate clamping table and a clamp plate vent hole;

7.1, a bidirectional filter paper base vent hole 7.2, a bidirectional filter paper base seal groove 7.3 and a bidirectional filter paper base clamp groove.

In fig. 18, arrows F and G indicate the gas flow direction;

in fig. 19, arrows H and I indicate the gas flow direction.

Detailed Description

The technical solution in the embodiments of the present invention will be further clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention:

example 1

As shown in figures 1-19, the filter paper type sterilization box of the present invention comprises a box body 2.9 and a box cover 2.19, wherein the box cover is provided with a box cover sealing rubber ring 2.5 corresponding to the box body pressing part for sealing the box cover and the box body. The box body 2.9 and the box cover 2.19 are connected through a hinge assembly, at least one step type waterproof platform 2.1 protruding upwards is arranged on the box cover 2.19, a group of filter paper type bidirectional air exchange systems 10 are clamped on the waterproof platform 2.1 at least through a screwing clamping groove, the clamping quantity of the filter paper type bidirectional air exchange systems can be set according to actual needs, and two groups are usually arranged.

As shown in fig. 3, the bottom surface of the box body can also be provided with filter paper type bidirectional ventilation systems by screwing the clamping grooves, the clamping number of the filter paper type bidirectional ventilation systems can be set according to actual needs, and 1 group or 2 groups are usually arranged.

A screwing groove 2.2 is arranged on the waterproof platform 2.1, an air vent 2.4 is arranged at the inner side of the screwing groove 2.2, and the filter paper type bidirectional air exchange system 10 is clamped in the screwing groove 2.2;

the periphery of the spirally-closed groove 2.2 is provided with an upward convex supporting rib 2.20, the periphery of the box cover 2.19 is bent downwards to form an S shape, a box cover sealing groove 2.21 corresponding to the box body 2.9 is formed, and a box cover sealing rubber ring 2.5 is arranged in the box cover sealing groove 2.21.

The hinge components can be provided with corresponding groups according to the requirement, and are generally arranged at two opposite sides of the box body 2.9 and the box cover 2.19, or can be arranged at four sides of the box body 2.9 and the box cover 2.19, and at least one group of hinge components is arranged at one side. The hinge assembly comprises a hinge plate 2.6, one side of the box cover 2.19 is fixedly connected with the hinge plate 2.6, the hinge plate 2.6 is connected with a hinge 2.8 through a hinge shaft 2.7, and a thermosensitive fixing plate 2.12 and a thermosensitive lock assembly 2.13 are fixedly arranged on the box body 2.9 corresponding to the hinge 2.8; the box cover and the box body are locked on a heat-sensitive lock fixing plate 2.12 through a hinge 2.8, and a box cover sealing rubber ring 2.5 is pressed in the locking process to form a sterile barrier space in the box, so that the effectiveness of a sterile barrier system is ensured.

The box body 2.9 is provided with a label bracket 2.10, and the label bracket 2.10 is used for fixing and clamping a label 2.11 through a label clamping groove 2.24; the label 2.11 is inserted into the label slot of the label support to be clamped tightly, and the label does not fall off even the sterilization box inclines.

The box body 2.9 is provided with an indication card support 2.14, one end of the indication card support 2.14 is fixed with a clamping pressure plate through a pressure plate clamping groove 2.25, the pressure plate is arranged below the indication card support 2.14, the pressure plate is fixed with an indication card pressure spring 2.15 through the pressure plate clamping groove, and the indication card pressure spring 2.15 and the indication card support 2.14 are arranged at the same side of the pressure plate. Adopt and instruct the jump ring of card pressure to compress tightly the instruction card, the commonality is stronger, can be applicable to the instruction card that compresses tightly various sizes of various models. The pressing plate can be a steel wire pressing plate 2.16, and the steel wire pressing plate 2.16 can be connected with the indicating card bracket through bolts or screws. A handle mounting groove A2.26 is formed in the outer side of the top end of the indication card support, a limiting step A2.27 is arranged above the handle mounting groove A2.26, and the limiting step A2.27 and the indication card support can be integrally formed; a handle mounting groove B2.22 is formed in the outer side of the top end of the sign indicating frame, a limiting step B2.23 is arranged above the handle mounting groove B2.22, and the limiting step B and the sign indicating frame can be integrally formed; one end of the handle 2.17 is inserted into the handle mounting groove A; the other end of the handle penetrates into the handle mounting groove B, the handle can rotate, and the rotation range of the handle is 0-90 degrees due to the limiting effect of the limiting step A and the limiting step B. The handle silica gel sleeve 2.18 can be sleeved on the handle, so that the comfort is increased. The corner of the handle is set into a transition arc shape.

As shown in fig. 1-3 and fig. 17-19, the filter paper type bidirectional ventilation system of the present invention includes a protection cover 1 and a base 4 connected by a screwing slot, the base 4 includes a barrel 4.8 with an open upper end, a folded edge 4.9 is extended outwards from the top end of the barrel 4.8, the screwing slot is provided between the folded edge 4.9 and the protection cover 1, a base vent 4.3 is provided at the bottom of the barrel 4.8, a protection cover 1.5 is provided on the protection cover 1, and the protection cover vent 1.5 is located inside the screwing slot;

the inner wall of the upper part of the barrel body 4.8 is clamped with a bidirectional filter paper support 5, and the bidirectional filter paper support 5 is provided with a bidirectional filter paper support vent hole 5.1;

a filter paper type ventilation sealing system is arranged between the bidirectional filter paper support 5 and the bottom of the barrel body 4.8, and comprises a bidirectional filter paper base 7, filter paper 9 and a bidirectional filter paper pressing plate 6, wherein a support step 4.2 is inwards arranged in the middle of the barrel body 4.8 and is used for supporting the bidirectional filter paper base 7, the top surface of the bidirectional filter paper base 7 is matched with the bottom surface of the bidirectional filter paper support 5, the upper part of the bidirectional filter paper base 7 is arranged in a hollow manner, the bidirectional filter paper pressing plate 6 is clamped at the upper part of the bidirectional filter paper base 7 through a clamping groove, a bidirectional filter paper base vent hole 7.1 is formed in the bidirectional filter paper base 7, a pressing plate vent hole 6.2 is formed in the bidirectional filter paper pressing plate 6, and the bidirectional filter paper base; and a filter paper 9 is arranged between the bidirectional filter paper base 7 and the bidirectional filter paper pressing plate 6.

The matching surface of the two-way filter paper base 7 and the supporting step 4.2 is provided with a two-way filter paper base sealing groove 7.2, and a filter paper large sealing rubber ring 8 is arranged in the two-way filter paper base sealing groove 7.2.

Two-way filter paper base draw-in groove 7.3 is seted up on 7 upper portion inner walls of two-way filter paper base, and two-way filter paper clamp 6 is equipped with clamp plate ka tai 6.1 correspondingly, and clamp plate ka tai 6.1 and two-way filter paper base draw-in groove 7.3 cooperation chucking.

The rotary clamping groove comprises a bent protective cover rotary clamping table 1.3 arranged on the bottom surface of the protective cover 1, and the protective cover rotary clamping table 1.3 and the bottom surface of the protective cover 1 form a protective cover rotary clamping groove 1.2; 4 top surfaces of base are equipped with the form base of bending and close ka tai 4.7 soon, the base closes ka tai 4.7 soon and forms the base with 4 top surfaces of base and closes draw-in groove 4.6 soon, the base closes ka tai 4.7 soon and closes draw-in groove 1.2 with the protection casing and close the setting of mutually supporting each other soon, the protection casing closes ka tai 1.3 soon and closes draw-in groove 4.6 with the base and cooperate the setting each other soon, the base closes ka tai 4.7 soon, the protection casing closes ka tai 1.2 soon, the protection casing closes ka tai 1.3 soon and closes the draw-in groove 4.6 with the.

The protective cover 1 is provided with supporting bulges 1.1 at intervals downwards; a sealing groove 4.1 is arranged on the folded edge 4.9, a sealing rubber ring 3 is arranged in the sealing groove 4.1, the sealing groove 4.1 and the sealing rubber ring 3 are used for being matched with a container for sealing, and the container can be sealed by a filter paper type sterilization box 2; the supporting protrusion 1.1 and the sealing groove 4.1 are arranged on the outer side of the screwing clamping groove. As shown in fig. 1, 4, 17-19, the supporting protrusion and the ventilation hole of the shield are respectively located at two sides of the rotary clamping table 1.3 of the shield, and the supporting protrusion and the ventilation hole of the shield are respectively located at two sides of the rotary clamping groove 1.2 of the shield. The hem of base, the one side of keeping away from the staving is the outside, and the seal groove is located the base and closes the draw-in groove 4.6 outsides soon, and the seal groove is located the base and closes the cassette holder outside soon. The adjacent supporting protrusions can be ventilated.

The outer edge of the bidirectional filter paper support 5 is provided with a bidirectional filter paper support clamping table 5.2 protruding outwards, the bidirectional filter paper support clamping table 5.2 corresponds to the bidirectional filter paper support clamping table, a base clamping groove 4.5 is formed in the inner wall of the upper portion of the barrel body 4.8 of the base 4, and the bidirectional filter paper support clamping table 5.2 and the base clamping groove 4.5 are matched and clamped with each other.

The bottom of the protective cover 1 is downwards provided with a sealing support seat 1.4, and a sealing support groove 5.3 is correspondingly arranged on the bidirectional filter paper support 5. The rotary closing groove surrounds the center of the supporting groove and is provided with at least 2 in central symmetry. The vent holes are arranged at least 2 around the support groove.

Working process or working principle:

the filter paper type bidirectional ventilation system 10 of the utility model is arranged on the filter paper type sterilization box 2, and the filter paper type sterilization box 2 is used as a sterilization container; the filter paper type bidirectional ventilation system 10 of the present invention can also be installed on other sterilized containers.

A screwing groove 2.2 is arranged on the waterproof platform 2.1, a vent 2.4 is arranged on the inner side of the screwing groove 2.2, and a ventilation valve type bidirectional ventilation system 14 is clamped in the screwing groove 2.2; the center of the screwing groove 2.2 is provided with a supporting groove 2.3, the vent hole 2.4 is arranged between the screwing groove and the supporting groove 2.3, and the sealing supporting seat 1.4 is arranged in the supporting groove 2.3.

As shown in fig. 17, in the normal pressure state, that is, when the external pressure of the container is equal to the internal pressure of the container, the filter paper can ensure that the inside of the container is the sterile barrier space at this time due to the special structural principle, so as to ensure the effectiveness of the sterile barrier system;

as shown in fig. 18, when the external pressure of the container is higher than the internal pressure of the container, the external gas of the container enters the container through the filter paper, and the filter paper can prevent harmful microorganisms in the air from entering the container due to a special structural principle;

as shown in fig. 19, when the pressure outside the container is lower than the pressure inside the container, the gas inside the container can be discharged to the outside of the cartridge through the filter paper.

Two-way air exchange system of filter paper formula, be the core component of sterilization box product, repeatedly usable because adopted mechanical structure sealed, applicable in pressure steam sterilization, its later maintenance easy dismounting.

The utility model discloses in to the direction of structure and the description of relative position relation, it is right not to constitute like the description from top to bottom all around the utility model discloses a restriction only is the description convenient.

Claims (7)

1. A filter paper type bidirectional ventilation system is characterized by comprising a protective cover (1) and a base (4) which are connected through a screwing clamping groove, wherein the base (4) comprises a barrel body (4.8) with an opening at the upper end, the top end of the barrel body (4.8) extends outwards to be provided with a folded edge (4.9), the screwing clamping groove is arranged between the folded edge (4.9) and the protective cover (1), the bottom of the barrel body (4.8) is provided with a base vent hole (4.3), the protective cover (1) is provided with a protective cover vent hole (1.5), and the protective cover vent hole (1.5) is positioned on the inner side of the screwing clamping groove;

the inner wall of the upper part of the barrel body (4.8) is clamped with a bidirectional filter paper support (5), and the bidirectional filter paper support (5) is provided with a bidirectional filter paper support vent hole (5.1);

a filter paper type ventilation sealing system is arranged between the bidirectional filter paper support (5) and the bottom of the barrel body (4.8), and comprises a bidirectional filter paper base (7), filter paper (9) and a bidirectional filter paper pressing plate (6), wherein a support step (4.2) is inwards arranged in the middle of the barrel body (4.8) and used for supporting the bidirectional filter paper base (7), the top surface of the bidirectional filter paper base (7) is matched with the bottom surface of the bidirectional filter paper support (5), the upper part of the bidirectional filter paper base (7) is arranged in a hollow mode, the bidirectional filter paper pressing plate (6) is clamped on the upper part of the bidirectional filter paper base (7) through a clamping groove, a bidirectional filter paper base vent hole (7.1) is formed in the bidirectional filter paper base (7), a vent hole pressing plate (6.2) is formed in the bidirectional filter paper pressing plate (6), and the bidirectional filter paper base; and filter paper (9) is arranged between the bidirectional filter paper base (7) and the bidirectional filter paper pressing plate (6).

2. The filter paper type bidirectional ventilation system of claim 1, wherein a bidirectional filter paper base sealing groove (7.2) is formed in the matching surface of the bidirectional filter paper base (7) and the supporting step (4.2), and a large filter paper sealing rubber ring (8) is arranged in the bidirectional filter paper base sealing groove (7.2).

3. The filter paper type bidirectional ventilation system according to claim 2, wherein the inner wall of the upper part of the bidirectional filter paper base (7) is provided with a bidirectional filter paper base clamping groove (7.3), the bidirectional filter paper pressing plate (6) is correspondingly provided with a pressing plate clamping table (6.1), and the pressing plate clamping table (6.1) and the bidirectional filter paper base clamping groove (7.3) are matched and clamped.

4. The filter paper type bidirectional ventilation system according to any one of claims 1 to 3, wherein the screwing clamping groove comprises a bent protective cover screwing clamping table (1.3) arranged on the bottom surface of the protective cover (1), and the protective cover screwing clamping table (1.3) and the bottom surface of the protective cover (1) form a protective cover screwing clamping groove (1.2); the top surface of the base (4) is provided with a bent base rotary-closing clamping table (4.7), the base rotary-closing clamping table (4.7) and the top surface of the base (4) form a base rotary-closing clamping groove (4.6), the base rotary-closing clamping table (4.7) and the protective cover rotary-closing clamping groove (1.2) are mutually matched and arranged, the protective cover rotary-closing clamping table (1.3) and the base rotary-closing clamping groove (4.6) are mutually matched and arranged, the base rotary-closing clamping table (4.7), the protective cover rotary-closing clamping groove (1.2), the protective cover rotary-closing clamping table (1.3) and the base rotary-closing clamping groove (4.6) are mutually matched and clamped together.

5. A filter paper type bidirectional ventilation system as defined in claim 4, wherein the hood (1) is provided with support protrusions (1.1) spaced downward; a sealing groove (4.1) is arranged on the folded edge (4.9), a sealing rubber ring (3) is arranged in the sealing groove (4.1), and the sealing groove (4.1) and the sealing rubber ring (3) are used for being matched with a container for sealing; the supporting protrusion (1.1) and the sealing groove (4.1) are arranged on the outer side of the screwing clamping groove.

6. The filter paper type bidirectional ventilation system according to claim 4, wherein the outer edge of the bidirectional filter paper support (5) is provided with a bidirectional filter paper support clamping table (5.2) protruding outwards, the inner wall of the upper part of the barrel body (4.8) of the base (4) is provided with a base clamping groove (4.5) corresponding to the bidirectional filter paper support clamping table (5.2), and the bidirectional filter paper support clamping table (5.2) and the base clamping groove (4.5) are mutually matched and clamped.

7. The filter paper type bidirectional ventilation system of claim 4, wherein the bottom of the protective cover (1) is provided with a sealing support base (1.4) downwards, and the bidirectional filter paper support (5) is correspondingly provided with a sealing support groove (5.3).

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