CN110608202A

CN110608202A - Water-gas mixture negative pressure device

Info

Publication number: CN110608202A
Application number: CN201910955335.1A
Authority: CN
Inventors: 何浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2019-12-24
Anticipated expiration: 2039-10-09
Also published as: CN110608202B

Abstract

The invention aims to provide a water-gas mixture negative pressure device which comprises a polarization driving device, a piston motion cavity, a two-way counter-directional one-way valve body, an external air inlet pipe and an external air outlet pipe, wherein the polarization driving device drives the piston to move back and forth in the piston motion cavity; the piston motion cavity is respectively communicated with an external air inlet pipe and an external air outlet pipe through two air pipe channels of the two-way counter-directional one-way valve body. This device passes through polarization drive arrangement drive piston round trip motion in the piston motion chamber, when making atmospheric pressure change through the bi-pass anisotropic check valve body with piston motion chamber intercommunication again, gaseous along bi-pass anisotropic check valve body formation one-way flow air current, thereby make external intake pipe produce the negative pressure, the technique maturation very on the polarization drive arrangement existing market, its frequency is high, small, make the negative pressure that produces effectual, it will consume a large amount of water and gas to have solved current oral cavity comprehensive treatment chair negative pressure, and influence the problem of the pressure of other chair position water and gas.

Description

Water-gas mixture negative pressure device

Technical Field

The invention belongs to the field of negative pressure device equipment, and particularly relates to a water-gas mixture negative pressure device.

Background

Negative pressure devices are often used in life or medical settings and industrial production, and many negative pressure devices are large in size in order to achieve a good negative pressure effect.

The negative pressure of the existing oral cavity comprehensive treatment chair is that water and air generate vacuum together to form a negative pressure suction system, and the system consumes a large amount of water and air and influences the pressure of water and air used by other chair positions.

Disclosure of Invention

The invention provides a water-air mixture negative pressure device, which solves the problems that the negative pressure of the existing oral cavity comprehensive treatment chair generates vacuum together with water and air to form a negative pressure suction system, and the system consumes a large amount of water and air and influences the pressure of water and air for other chair positions.

The technical scheme adopted by the invention is as follows:

a water-gas mixture negative pressure device comprises a polarization driving device, a piston motion cavity, a two-way counter-directional one-way valve body, an external air inlet pipe and an external air outlet pipe, wherein the polarization driving device drives the piston to move back and forth in the piston motion cavity; the piston motion cavity is respectively communicated with an external air inlet pipe and an external air outlet pipe through two air pipe channels of the two-way counter-directional one-way valve body. This device passes through polarization drive arrangement drive piston round trip motion in the piston motion chamber, make the atmospheric pressure in the piston motion chamber change constantly, make when atmospheric pressure changes through the bi-pass anisotropic check valve body with piston motion chamber intercommunication again, gaseous along the bi-pass anisotropic check valve body one-way flow air current that forms, thereby make external intake pipe produce the negative pressure, the technique very maturity on the polarization drive arrangement existing market, its frequency is high, small, make the negative pressure that produces effectual, can operate depending on the electricity, it jointly produces the vacuum for water and gas and forms the negative pressure suction system to have solved current oral cavity comprehensive therapy chair negative pressure, this system will consume a large amount of water and gas, and influence the problem of the pressure of other seat water and gas.

According to the technical preference, the piston is a circular rubber sheet, the piston motion cavity is an arc-shaped sunken cavity, and the diameter of an arc opening of the arc-shaped sunken cavity is the same as that of the circular rubber sheet. Be circular sheet rubber through setting up the piston, the circular arc mouth diameter of convex sunken cavity is the same with circular sheet rubber diameter, make convex sunken cavity press the edge of circular sheet rubber at fixed position, during the motion of polarization drive arrangement, the deformation that relies on circular sheet rubber makes atmospheric pressure change in the piston motion chamber, thus, this compares with traditional piston, the piston does not take place the displacement, the piston of avoiding and the friction loss of chamber wall, make the device use the problem that also can not take place gas leakage for a long time, the practicality of device has been improved.

According to the technical preference, the piston motion cavity is arranged on the two-way different-direction one-way valve body, and the circular arc-shaped sunken cavity of the piston motion cavity is provided with two holes communicated with the channel of the two-way different-direction one-way valve body. Through setting up the piston motion chamber on bi-pass syntropy check valve body, need not set up the independent structure in piston motion chamber alone from this, the volume of the device that reduces, material saving, integrative completion, its practicality is strong.

According to the technical preference, the two-way counter check valve body comprises two air pipe channels, check valves are arranged in the two air pipes, and the directions of the two check valves are opposite.

According to the technical preference, the two one-way valves are divided into an air inlet valve and an air outlet valve, the air inlet valve and the air outlet valve are identical in structure, the air inlet valve comprises a first air inlet circular ring bulge, a first rubber valve sheet, a first cylindrical bulge and a first air outlet hole, the first rubber valve sheet is positioned between the first air inlet circular ring bulge and the first cylindrical bulge and is in close contact with the first cylindrical bulge, and the first air outlet hole is positioned beside the first cylindrical bulge; the diameter of the first cylindrical protrusion is smaller than the diameter of the inner circle of the first air inlet circular ring protrusion. The rubber valve piece is pressed by arranging the circular ring bulge and the cylindrical bulge with the inner diameter smaller than the inner diameter of the circular ring bulge, and when the air pressure of the air outlet is smaller than one end of the air inlet circular ring bulge, the rubber valve piece deforms around under the resistance action of the cylindrical bulge, so that the rubber valve piece is separated from the air inlet circular ring bulge, and the air flow passes through the rubber valve piece; thus, when the piston moves, gas enters from the gas inlet valve and exits from the gas outlet valve to form gas flow.

According to the technical preference, two trachea passageway parallel arrangement, admission valve and air outlet valve set up side by side, the first venthole of admission valve and the second of air outlet valve admit air the ring arch and set up on same casing A, first rubber disk sets up on same rubber disk with the second rubber disk of air outlet valve, the protruding second venthole with the air outlet valve of first air admission ring is located same casing B. Through setting up admission valve and air outlet valve side by side, set up admission valve and air outlet valve on every part simultaneously and correspond the part for device spare part reduces, has more practiced thrift the equipment process when practicing thrift the cost, and the practicality is strong.

According to the technical preference, the external air inlet pipe is communicated with the first air inlet circular ring bulge, and the external air outlet pipe is communicated with the second air outlet hole; the external air inlet pipe and the external air outlet pipe are both positioned on the same shell B.

According to the technical preference, a first rubber valve sheet and a second rubber valve sheet on the rubber sheet are symmetrically arranged, arc-shaped holes are formed in the two sides of the first rubber valve sheet and the two sides of the second rubber valve sheet, and connecting parts are arranged at the two ends of the first rubber valve sheet and the two ends of the second rubber valve sheet and connected with the rubber sheet; one side of the connecting part, which is far away from the central points of the first rubber valve sheet and the second rubber valve sheet, is provided with an arc-shaped hole; and a rubber sheet mounting groove matched with the rubber sheet is formed in the surface of the shell B contacting with the rubber sheet. The rubber valve pieces of the two check valves are arranged in one body, so that the installation is convenient.

According to the technical preference, a water-gas temporary storage cavity is arranged between the external air inlet pipe and the two-way counter check valve body, the water-gas temporary storage cavity is formed by sealing and connecting a shell C and the two-way counter check valve body, the water-gas temporary storage cavity is positioned on the two-way counter check valve body, and a sealing ring is arranged around the water-gas temporary storage cavity; a plurality of limiting bulges are arranged around the sealing ring; a limiting groove matched with the limiting bulge is formed in the shell C; and a layer of sealing gasket is also arranged between the shell C and the sealing ring. The temporary storage cavity for the water and the air is arranged between the external air inlet pipe and the two-way counter-flow one-way valve body, so that the problem that the air is not smoothly circulated when the liquid is too much is avoided, the temporary storage cavity for the liquid which cannot be completely adsorbed once can be temporarily stored in the temporary storage cavity for the water and the liquid which cannot be completely adsorbed once can be temporarily stored when the liquid is too much in the oral medical treatment process, and the redundant liquid can be taken away again under the condition of the circulation of the air, so that the adsorption effect is ensured; meanwhile, due to the vibration of the eccentric driving device, the shell C and the connecting part are slightly deformed to reduce the sealing effect, the deformation of the shell C is offset by the aid of the sealing ring and the sealing gasket, the sealing effect is enhanced, the sealing performance of the device is guaranteed, and the shell C is convenient to mount through limiting protrusions arranged on the periphery of the sealing ring and limiting grooves formed in the shell C.

According to the technical preference, the shell C, the shell of the two-way anisotropic one-way valve body and the shell of the polarization driving device are all provided with matching and communicating screw holes at the periphery, and the shell C, the shell of the two-way anisotropic one-way valve body and the polarization driving device are connected and installed through screws.

The invention has the following advantages and beneficial effects:

1. the device drives the piston to move back and forth in the piston movement cavity through the polarization driving device, so that the air pressure in the piston movement cavity is continuously changed, and when the air pressure is changed through the two-way different-direction one-way valve body communicated with the piston movement cavity, the air forms one-way flowing air flow along the two-way different-direction one-way valve body, so that the external air inlet pipe generates negative pressure;

2. according to the invention, the piston is a circular rubber sheet, the diameter of the circular arc opening of the circular arc sunken cavity is the same as that of the circular rubber sheet, so that the circular arc sunken cavity presses the edge of the circular rubber sheet at a fixed position, and when the polarization driving device moves, the air pressure in the moving cavity of the piston is changed by virtue of the deformation of the circular rubber sheet, so that compared with the traditional piston, the piston does not displace, the friction loss between the piston and the cavity wall is avoided, the air leakage problem does not occur even if the device is used for a long time, and the practicability of the device is improved;

3. according to the invention, the annular bulge and the cylindrical bulge with the smaller inner diameter than the annular bulge are arranged to press the rubber valve piece, when the air pressure of the air outlet is smaller than that of one end of the air inlet annular bulge, the rubber valve piece deforms around under the resistance action of the cylindrical bulge, so that the rubber valve piece is separated from the air inlet annular bulge, and the air flow passes through the rubber valve piece; therefore, when the piston moves, gas enters from the gas inlet valve and exits from the gas outlet valve to form gas flow; through setting up admission valve and air outlet valve side by side, set up admission valve and air outlet valve on every part simultaneously and correspond the part for device spare part reduces, has more practiced thrift the equipment process when practicing thrift the cost, and the practicality is strong.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a perspective exploded view of the overall structure of the present invention.

Fig. 2 is a right-side structural schematic view of the polarization driving device and the piston portion of the present invention.

FIG. 3 is an exploded perspective view of the two-way directional one-way valve body of the present invention.

Fig. 4 is a schematic diagram of the right side view of the housing a of the present invention.

Fig. 5 is a right-side view structural diagram of the housing B of the present invention.

Reference numbers and corresponding part names in the drawings:

1-a polarization driving device, 2-a piston, 3-a piston motion cavity, 4-a two-way different-direction one-way valve body, 5-an external air inlet pipe, 6-an external air outlet pipe, 7-a water vapor temporary storage cavity, 8-a shell C, 9-a sealing ring, 10-a limiting bulge, 11-a limiting groove, 12-a sealing gasket, 13-a screw hole, 401-an air inlet valve, 402-an air outlet valve, 403-a shell A, 404-a rubber sheet, 405-a shell B, 406-a rubber sheet mounting groove, 4011-a first air inlet circular ring bulge, 4012-a first rubber valve sheet, 4013-a first cylindrical bulge, 4014-a first air outlet hole, 4021-a second air inlet circular ring bulge, 4022-a second rubber valve sheet, 4023-a second cylindrical bulge and 4024-a second air outlet hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

It should be understood that the terms first, second, etc. are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.

It is to be understood that in the description of the present invention, the terms "upper", "vertical", "inside", "outside", and the like, refer to an orientation or positional relationship that is conventionally used for placing the product of the present invention, or that is conventionally understood by those skilled in the art, and are used merely for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present invention.

It will be understood that when an element is referred to as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly adjacent" or "directly coupled" to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; 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 in specific cases to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.

Example 1:

as shown in fig. 1 and fig. 2, the present embodiment provides a water-gas mixture negative pressure device, which includes a polarization driving device 1, a piston 2, a piston moving cavity 3, a two-way counter-directional one-way valve body 4, an external air inlet pipe 5, and an external air outlet pipe 6, where the polarization driving device 1 drives the piston 2 to move back and forth in the piston moving cavity 3; the piston motion cavity 3 is respectively communicated with an external air inlet pipe 5 and an external air outlet pipe 6 through two air pipe channels of the two-way counter-directional one-way valve body 4. When the piston is specifically implemented, the piston 2 is a circular rubber sheet, the piston motion cavity 3 is an arc-shaped sunken cavity, and the diameter of an arc opening of the arc-shaped sunken cavity is the same as that of the circular rubber sheet.

In specific implementation, as shown in fig. 3 and 4, the piston moving cavity 3 is disposed on the two-way anisotropic check valve body 4, and two holes communicated with the channel of the two-way anisotropic check valve body 4 are disposed on the circular arc-shaped concave cavity of the piston moving cavity 3. The bi-pass anisotropic check valve body 4 comprises two air pipe passages, check valves are arranged in the two air pipes, and the directions of the two check valves are opposite. The two one-way valves are divided into an air inlet valve 401 and an air outlet valve 402, the structures of the air inlet valve 401 and the air outlet valve 402 are the same, the air inlet valve 401 comprises a first air inlet circular ring protrusion 4011, a first rubber valve plate 4012, a first cylindrical protrusion 4013 and a first air outlet hole 4014, the first rubber valve plate 4012 is located between the first air inlet circular ring protrusion 4011 and the first cylindrical protrusion 4013 and is in close contact with the first rubber valve plate, and the first air outlet hole 4014 is located beside the first cylindrical protrusion 4013; the diameter of the first cylindrical protrusion 4013 is smaller than the inner circle diameter of the first air inlet ring protrusion 4011. Two trachea passageway parallel arrangement, admission valve 401 and air outlet valve 402 set up side by side, the protruding 4021 of second air inlet ring of first venthole 4014 and air outlet valve 402 of admission valve 401 sets up on same casing A403, first rubber valve piece 4012 sets up on same rubber piece 404 with the second rubber valve piece 4022 of air outlet valve 402, the protruding 4011 of first air inlet ring is located same casing B405 with the second venthole 4024 of air outlet valve 402. During specific implementation, the protruding 4011 of first ring of admitting air and the protruding 4021 ring of second ring of admitting air are inside to be provided with cross check, and the bellied position of post can be injectd in the unqualified center of cross for the cylinder is protruding to support rubber valve piece on the ring is protruding, makes rubber valve piece inseparabler with the protruding contact of ring, and reinforcing gas tightness guarantees the negative pressure effect.

In specific implementation, the external air inlet pipe 5 is communicated with the first air inlet circular ring boss 4011, and the external air outlet pipe 6 is communicated with the second air outlet hole 4024; the external air inlet pipe 5 and the external air outlet pipe 6 are both located on the same shell B405. The first rubber valve piece 4012 and the second rubber valve piece 4022 on the rubber piece 404 are symmetrically arranged, arc-shaped holes are formed in the two sides of the first rubber valve piece 4012 and the second rubber valve piece 4022, and connecting parts are arranged at the two ends of the first rubber valve piece 4012 and the second rubber valve piece 4022 and connected with the rubber piece 404; one side of the connecting part, which is far away from the central points of the first rubber valve piece 4012 and the second rubber valve piece 4022, is provided with an arc-shaped hole; the surface of the shell B405 contacting the rubber sheet 404 is provided with a rubber sheet mounting groove 406 matched with the rubber sheet 404.

In specific implementation, as shown in fig. 5, a water and gas temporary storage cavity 7 is arranged between the external air inlet pipe 5 and the two-way counter check valve body 4, the water and gas temporary storage cavity 7 is formed by hermetically connecting a shell C8 and the two-way counter check valve body 4, the water and gas temporary storage cavity 7 is located on the two-way counter check valve body 4, and a sealing ring 9 is arranged around the water and gas temporary storage cavity 7; a plurality of limiting bulges 10 are arranged around the sealing ring 9; a limiting groove 11 matched with the limiting protrusion 10 is formed in the shell C8; a layer of sealing gasket 12 is arranged between the shell C8 and the sealing ring 9. The shell C8, the shell of the two-way anisotropic one-way valve body 4 and the periphery of the shell of the polarization driving device 1 are all provided with matching and communicating screw holes 13, and the shell C8, the shell of the two-way anisotropic one-way valve body 4 and the polarization driving device 1 are connected and installed through screws. During specific implementation, the outer rings of the external air inlet pipe 5 and the external air outlet pipe 6 are provided with threads, so that the external air inlet pipe and the external air outlet pipe are conveniently and tightly connected with other pipelines.

In conclusion, the device drives the piston to move back and forth in the piston movement cavity through the polarization driving device, so that the air pressure in the piston movement cavity is continuously changed, and when the air pressure is changed through the two-way different-direction one-way valve body communicated with the piston movement cavity, the air forms one-way flowing air flow along the two-way different-direction one-way valve body, so that the external air inlet pipe generates negative pressure; the piston is a circular rubber sheet, the diameter of the circular arc opening of the circular arc sunken cavity is the same as that of the circular rubber sheet, so that the circular arc sunken cavity presses the edge of the circular rubber sheet at a fixed position, and when the polarization driving device moves, air pressure in the moving cavity of the piston is changed by means of deformation of the circular rubber sheet, so that compared with the traditional piston, the piston does not displace, friction loss between the piston and the cavity wall is avoided, the air leakage problem does not occur even if the device is used for a long time, and the practicability of the device is improved; the rubber valve piece is pressed by arranging the circular ring bulge and the cylindrical bulge with the inner diameter smaller than the inner diameter of the circular ring bulge, and when the air pressure of the air outlet is smaller than one end of the air inlet circular ring bulge, the rubber valve piece deforms around under the resistance action of the cylindrical bulge, so that the rubber valve piece is separated from the air inlet circular ring bulge, and the air flow passes through the rubber valve piece; therefore, when the piston moves, gas enters from the gas inlet valve and exits from the gas outlet valve to form gas flow; through setting up admission valve and air outlet valve side by side, set up admission valve and air outlet valve on every part simultaneously and correspond the part for device spare part reduces, has more practiced thrift the equipment process when practicing thrift the cost, and the practicality is strong.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The water-gas mixture negative pressure device is characterized by comprising a polarization driving device (1), a piston (2), a piston motion cavity (3), a two-way counter-directional one-way valve body (4), an external air inlet pipe (5) and an external air outlet pipe (6), wherein the polarization driving device (1) drives the piston (2) to move back and forth in the piston motion cavity (3); the piston motion cavity (3) is respectively communicated with an external air inlet pipe (5) and an external air outlet pipe (6) through two air pipe channels of the two-way anisotropic one-way valve body (4).

2. The water-gas mixture negative pressure device according to claim 1, wherein: the piston (2) is a circular rubber sheet, the piston motion cavity (3) is an arc-shaped sunken cavity, and the diameter of an arc opening of the arc-shaped sunken cavity is the same as that of the circular rubber sheet.

3. The water-gas mixture negative pressure device according to claim 2, wherein: the piston motion cavity (3) is arranged on the two-way anisotropic one-way valve body (4), and two holes communicated with the channel of the two-way anisotropic one-way valve body (4) are formed in the circular arc-shaped concave cavity of the piston motion cavity (3).

4. The water-gas mixture negative pressure device according to claim 1, wherein: the two-way different-direction one-way valve body (4) comprises two air pipe channels, one-way valves are arranged inside the two air pipes, and the directions of the two one-way valves are opposite.

5. The water-gas mixture negative pressure device according to claim 4, wherein: the two one-way valves are divided into an air inlet valve (401) and an air outlet valve (402), the air inlet valve (401) and the air outlet valve (402) are identical in structure, the air inlet valve (401) comprises a first air inlet circular ring protrusion (4011), a first rubber valve plate (4012), a first cylindrical protrusion (4013) and a first air outlet hole (4014), the first rubber valve plate (4012) is located between the first air inlet circular ring protrusion (4011) and the first cylindrical protrusion (4013) and is in close contact with the first cylindrical protrusion, and the first air outlet hole (4014) is located beside the first cylindrical protrusion (4013); the diameter of the first cylindrical protrusion (4013) is smaller than the inner circle diameter of the first air inlet circular ring protrusion (4011).

6. The water-gas mixture negative pressure device according to claim 5, wherein: two trachea passageway parallel arrangement, admission valve (401) and air outlet valve (402) set up side by side, the first venthole (4014) of admission valve (401) and the second of air outlet valve (402) admit air ring arch (4021) set up on same casing A (403), first rubber disk (4012) set up on same rubber disk (404) with second rubber disk (4022) of air outlet valve (402), first protruding (4011) of ring of admitting air and second venthole (4024) of air outlet valve (402) are located same casing B (405).

7. The water-gas mixture negative pressure device according to claim 6, wherein: the external air inlet pipe (5) is communicated with the first air inlet circular ring bulge (4011), and the external air outlet pipe (6) is communicated with the second air outlet hole (4024); the external air inlet pipe (5) and the external air outlet pipe (6) are both positioned on the same shell B (405).

8. The water-gas mixture negative pressure device according to claim 6, wherein: the rubber valve is characterized in that a first rubber valve piece (4012) and a second rubber valve piece (4022) on the rubber piece (404) are symmetrically arranged, arc-shaped holes are formed in the two sides of the first rubber valve piece (4012) and the second rubber valve piece (4022), and connecting parts are arranged at the two ends of the first rubber valve piece (4012) and the second rubber valve piece (4022) and connected with the rubber piece (404); arc-shaped holes are formed in one sides, far away from the center points of the first rubber valve piece (4012) and the second rubber valve piece (4022), of the connecting parts; and a rubber sheet mounting groove (406) matched with the rubber sheet (404) is formed in the surface of the shell B (405) contacted with the rubber sheet (404).

9. The water-gas mixture negative pressure device according to claim 1, wherein: a water-gas temporary storage cavity (7) is arranged between the external air inlet pipe (5) and the two-way counter check valve body (4), the water-gas temporary storage cavity (7) is formed by hermetically connecting a shell C (8) and the two-way counter check valve body (4), the water-gas temporary storage cavity (7) is positioned on the two-way counter check valve body (4), and a sealing ring (9) is arranged around the water-gas temporary storage cavity (7); a plurality of limiting bulges (10) are arranged around the sealing ring (9); a limiting groove (11) matched with the limiting bulge (10) is formed in the shell C (8); and a layer of sealing gasket (12) is also arranged between the shell C (8) and the sealing ring (9).

10. The water-gas mixture negative pressure device according to claim 9, wherein: casing C (8), the casing of bi-pass anisotropic check valve body (4) and the casing of polarization drive device (1) all are provided with all around and match and communicate with each other screw (13), connect the installation with casing C (8), the casing of bi-pass anisotropic check valve body (4) and polarization drive device (1) through the screw rod.