CN217960810U

CN217960810U - Negative pressure drainage device

Info

Publication number: CN217960810U
Application number: CN202123445366.4U
Authority: CN
Inventors: 陈寿年
Original assignee: Draegerwerk AG and Co KGaA
Current assignee: Draegerwerk AG and Co KGaA
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-12-06
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a negative pressure drainage ware, has the gas circuit of admitting air and the gas circuit of giving vent to anger, the gas circuit of admitting air passes through the gas pocket intercommunication with the gas circuit of giving vent to anger, negative pressure drainage ware includes: a piston member fitted to the air hole; an adjustment assembly for adjusting the position of the piston member, the adjustment assembly adjusting the extreme position of the piston member within the bore to a first position; a switch assembly for moving the piston member to a second position within the bore when closed and for moving the piston member away from the second position when open; wherein the second position is a deeper position within the gas bore relative to the first position. The utility model provides a modified negative pressure drainage ware can be convenient for user's use more.

Description

Negative pressure drainage device

Technical Field

The embodiment of the utility model provides a relate to medical instrument technical field, especially relate to a negative pressure drainage ware.

Background

The negative pressure drainage device is an important medical device in medical scenes and is applied to scenes such as thoracic cavity treatment, abdominal cavity treatment, diabetes treatment and the like. For example, negative pressure drains may be used for bronchial suction, removing secretions or other liquids from the upper respiratory tract or airway during anesthesia or resuscitation; it may also be used to evacuate air or pathological fluids from the thorax, for example, for treatment of pneumothorax; it can also be used for discharging the excrement, blood or pus of operation wound and body cavity, and preventing or treating infection.

In the prior art, the user still has the use operation inconvenience when using the negative pressure drainage ware, and the on-off state discernment scheduling problem is unclear, consequently, needs an improved negative pressure drainage ware urgently, can be convenient for more the user use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modified negative pressure drainage ware can let user operation swiftly convenient, and product on-off state is clear, optimizes user's use and experiences.

In order to solve the technical problem, the embodiment of the utility model provides a negative pressure drainage ware has the gas circuit of admitting air and the gas circuit of giving vent to anger, the gas circuit of admitting air passes through the gas pocket intercommunication with the gas circuit of giving vent to anger, negative pressure drainage ware includes: a piston member fitted to the air hole; an adjustment assembly for adjusting the position of the piston member, the adjustment assembly adjusting the extreme position of the piston member within the bore to a first position; a switch assembly for moving the piston member to a second position within the air bore when closed and moving the piston member away from the second position when open; wherein the second position is a deeper position within the gas bore relative to the first position.

Optionally, the piston member comprises: a piston body fitted with the air hole; the diaphragm is fixedly connected with the piston main body; when the switch component abuts against the diaphragm, the diaphragm drives the piston main body to move to the second position; when the switch component releases the diaphragm, the diaphragm drives the piston main body to return to the second position.

Optionally, the switch assembly includes: a slider; the switch knob is used for adjusting the position of the sliding block; when the switch is closed, the switch knob drives the sliding block to abut against the diaphragm; when turned on, the switch knob releases the slider to cause the slider to release the diaphragm.

Optionally, the method further includes: a housing having a slide slot within which the slide moves.

Optionally, the slider has a first side surface and a second side surface opposite to each other, the first side surface is abutted by the boss of the switch knob, and the second side surface is used for abutting the diaphragm assembly, wherein the first side surface has a first preset position and a second preset position, and a distance between the first side surface and the second side surface gradually increases from the first preset position to the second preset position of the first side surface; when the bulge part abuts against the second preset position, the sliding block abuts against the diaphragm; when the bulge part abuts against the first preset position, the slide block releases the membrane.

Optionally, the switch assembly further includes: an elastic member located between the second side and the diaphragm assembly; when the bulge moves from the first preset position to the second preset position, the deformation degree of the elastic piece is gradually increased.

Optionally, the first preset position and the second preset position are both provided with a first groove.

Optionally, the adjusting assembly includes: adjusting a knob; the transmission assembly is in threaded connection with the adjusting knob, and when the adjusting knob rotates, the transmission assembly drives the piston piece to move axially; and the adjusting limiting part is used for limiting the adjusting knob in the axial direction.

Optionally, the adjusting knob has an adjusting limiting portion on an outer side thereof, the adjusting limiting member is located in a cavity formed by the adjusting limiting portion and the limiting portion of the housing, and the adjusting limiting member is a first ball.

Optionally, the adjusting knob further comprises a housing, a second ball is fixed on the housing, a plurality of second grooves are formed in the outer wall of the adjusting knob along the circumferential direction, and the second grooves are used for accommodating the second ball.

Compared with the prior art, the technical scheme of the utility model following beneficial effect has:

the utility model discloses in the scheme of embodiment, negative pressure drainage ware includes: a piston member; an adjustment assembly for adjusting the position of the piston member, wherein the adjustment assembly adjusts the extreme position of the piston member within the bore to a first position; a switch assembly for moving the piston member to and from the second position. Since the second position is a deeper position in the air hole relative to the first position, the piston member can be moved to and from the deeper position in the air hole by the switch assembly, so as to realize the isolation and communication of the air inlet path and the air outlet path. The utility model discloses in the scheme of embodiment, the position that adjusting part is used for adjusting piston spare, the switch module also adjusts the switch in order to realize the negative pressure drainage ware to the position of piston spare. Compared with the prior art, the negative pressure drainage device in the scheme has a more compact structure, and the on-off state can be quickly identified, so that the negative pressure drainage device is more convenient for a user to use.

Furthermore, in the embodiment of the present invention, when the switch assembly abuts against the diaphragm, the diaphragm drives the piston main body to move to the second position; when the switch component releases the diaphragm, the diaphragm drives the piston main body to return to the second position. That is, the switch assembly adjusts the position of the piston body by abutting and releasing the diaphragm. By adopting the scheme, the limited space in the main body part where the piston piece is positioned in the negative pressure drainage device can be effectively utilized, and the space utilization rate is favorably improved.

Further, the utility model discloses in the scheme of embodiment, switch knob's bellying supports and holds in the first side of slider, works as the bellying supports when holding in the second preset position, the slider supports and holds the diaphragm, works as the bellying supports when holding in first preset position, slider release diaphragm, wherein, first preset position department and second preset position department all are provided with first recess. Therefore, the bulge part can make a sound when moving to the first preset position and the second preset position, so that the sound feedback can be performed when the negative pressure drainage device is opened or closed, and the use experience of a user can be optimized.

Further, the adjustment assembly includes: adjusting knob, drive assembly and regulation locating part, when adjusting knob rotated, drive assembly drove piston spare and moves in the axial. In addition, the adjustment limit may be used to limit the movement of the adjustment knob in the axial direction. Therefore, by adopting the structure, the position of the adjusting knob in the axial direction can be kept unchanged, the difficulty of cleaning caused by screwing in and out of the adjusting knob is avoided, and the use by a user is more convenient.

Furthermore, the outer side of the adjusting knob is provided with an adjusting limiting part, the adjusting limiting part is positioned in a cavity formed by the adjusting limiting part and the limiting part of the shell, and the adjusting limiting part is a first ball. By adopting the scheme, the friction force during rotation of the adjusting knob is as small as possible, and the use experience of a user is further improved.

Further, the utility model discloses in the scheme of embodiment, be fixed with the second ball on the casing, be provided with a plurality of second recesses along the circumference direction on adjust knob's the outer wall, the second recess is used for holding the second ball. By adopting the structure, the sound feedback can be realized when the air pressure of the negative pressure gas is adjusted, and the use experience of a user is further improved.

Drawings

FIG. 1 is a schematic cross-sectional view of a negative pressure flow diverter at one viewing angle in an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a negative pressure drainage device at another viewing angle in an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a negative pressure flow diverter at another viewing angle according to an embodiment of the present invention.

Detailed Description

As discussed in the background of the invention, there is a need for an improved negative pressure drainage device that is more convenient for the user.

In the prior art, an adjusting knob is arranged on the negative pressure drainage device, however, the adjusting knob is usually only used for adjusting the pressure of the negative pressure gas, and cannot be used as a switch of the negative pressure drainage device. In addition, a valve is arranged on an air outlet pipeline of the negative pressure drainage device, and a user can open and close the negative pressure drainage device by opening and closing the valve. Because the position of the air outlet pipeline is hidden, and the negative pressure drainage device is usually applied to a relatively urgent medical scene, when the existing negative pressure drainage device is used, a user cannot judge the switching state, and the user cannot rapidly switch the negative pressure drainage device, so that the problem of inconvenient use exists.

In order to solve the technical problem, the utility model provides a negative pressure drainage device. The utility model discloses in the scheme, negative pressure drainage ware includes: a piston member; an adjustment assembly for adjusting the position of the piston member, wherein the adjustment assembly adjusts the extreme position of the piston member within the bore to a first position; and the switch assembly is used for moving the piston piece to and from the second position, and the second position is a deeper position in the air hole relative to the first position, so that the piston piece can be moved to and from the deeper position in the air hole through the switch assembly to realize the isolation and communication of the air inlet path and the air outlet path. The utility model discloses in the scheme of embodiment, the position that adjusting part is used for adjusting piston spare, the switch module also adjusts the switch in order to realize the negative pressure drainage ware to the position of piston spare. Compared with the prior art, the negative pressure drainage device in the scheme has a more compact structure, so that the negative pressure drainage device is more convenient for a user to use.

In order to make the above objects, features and advantages of the embodiments of the present invention more comprehensible, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic cross-sectional view of a negative pressure flow diverter at a viewing angle according to an embodiment of the present invention. Referring to fig. 2, fig. 2 is a schematic cross-sectional view of a negative pressure flow diverter at another viewing angle according to an embodiment of the present invention. Referring to fig. 3, fig. 3 is a cross-sectional view of a negative pressure flow diverter at a further viewing angle according to an embodiment of the present invention. It should be noted that, in order to more intuitively display the internal structure of the negative pressure drainage device, some parts in the drawings are embodied by adopting a perspective effect. The negative pressure flow diverter in the embodiment of the present invention is described below in a non-limiting manner with reference to fig. 1, 2 and 3.

The negative pressure drainage device can include: an inlet gas path 10 and an outlet gas path 11.

Specifically, the air inlet path 10 is communicated with an external negative pressure air source (not shown), the air outlet path 11 is communicated with a user end connector (not shown), and the air inlet path 10 and the air outlet path 11 can be communicated through air holes (not shown).

More specifically, the negative pressure flow diverter may further include a gas communication pipeline (not shown), wherein the gas communication pipeline is used for communicating the gas inlet path 10 with the gas outlet path 11.

More specifically, a gas inlet of the gas communication line is configured to communicate with a gas outlet of the gas inlet circuit 10, and a gas outlet of the gas communication line is configured to communicate with a gas inlet of the gas outlet circuit 11. When the air inlet path 10 and the air outlet path 11 are communicated, the negative pressure gas flows into the negative pressure drainage device from the gas inlet of the air inlet path 10 and flows through the air inlet path 10, the gas communication pipeline and the air outlet path 11 and flows out from the gas outlet of the air outlet path 11, so that the negative pressure gas can be provided for the affected part to be drained.

In a specific example, the gas hole may refer to a gas inlet of a gas communication pipe. In other embodiments, the air hole may also be a gas outlet of the gas communication pipeline.

Further, the negative pressure flow diverter also comprises a piston part, and the piston part can comprise: a piston body 120 and a diaphragm 121.

Specifically, the extending direction of the piston main body 120 is an axial direction. The piston body 120 has a piston end 1201 and a top end 1202 in the axial direction, wherein the piston end 120 may face the air hole, and the piston end 1201 may be conical, but is not limited thereto.

Further, the piston member is fitted with the air hole. Specifically, the piston body 120 fits with the air hole, and more specifically, the piston end 1201 fits with the air hole. The piston end 1201 is adapted to the air hole, which means that at least a part of the piston end 1201 can enter the air hole.

Specifically, the air holes in this embodiment may be used to adjust the pressure of the negative pressure gas in the negative pressure flow diverter, that is, the air holes may be adjustment air holes. More specifically, the pressure of the negative pressure gas in the negative pressure flow diverter can be adjusted according to the relative position relationship between the piston end 1201 and the air hole. The air hole may also be conical, so that it can be adapted to the conical piston end 1201.

Further, when the piston member is located at different positions in the air hole, the degree of isolation between the air inlet path 10 and the air outlet path 11 is different. Specifically, the deeper the position of the piston member in the air hole, the higher the degree of isolation between the inlet air path 10 and the outlet air path 11.

More specifically, when the piston end 1201 is located at different positions in the air hole, the air inlet path 10 is separated from the air outlet path 11 to different extents.

When the piston end 1201 is in the second position in the bore, the inlet air passage 10 is completely isolated from the outlet air passage 11. When the piston end 1201 is not located in the air hole, the air inlet path 10 is communicated with the air outlet path 11. In other words, the deeper the position of the piston end 1201 in the air hole, the higher the degree of isolation between the inlet air passage 10 and the outlet air passage 11.

Further, the negative pressure flow diverter further comprises an adjusting assembly for adjusting the position of the piston member in the axial direction, and more particularly, the position of the piston body 120 in the axial direction. Wherein the adjustment assembly adjusts the extreme position of the piston member within the air bore to a first position. In a specific example, the inlet air passage 10 and the outlet air passage 11 may be in communication when the piston member is in the first position within the air hole.

Reference may be made to the following detailed description for details of the adjustment assembly.

Further, the negative pressure drainage device still includes: a switch assembly for moving the piston member 12 from a current position to a second position, wherein the current position is determined by the adjustment assembly.

Specifically, during use, a user may adjust the piston member to a current position through the adjustment assembly, and when the piston member is located at the current position, the air inlet path 10 and the air outlet path 11 may be communicated with each other.

Further, when the piston piece is located to the current position, the user can directly move the piston piece to the second position in the air hole from the current position through the switch assembly to directly completely isolate the air inlet path 10 from the air outlet path 11, thereby closing the negative pressure flow diverter.

More specifically, when the piston member is located at the second position, the piston end 1201 blocks the air hole in an interference manner, and negative pressure air cannot enter the air outlet path 11 from the air inlet path 10, so that the negative pressure flow diverter is closed.

Further, the switch component is also used for returning the piston piece to the current position from the second position, and the negative pressure gas can flow into the air outlet path 11 from the air inlet path 10, so that the air inlet path 10 is communicated with the air outlet path 11, and the negative pressure flow diverter is opened.

Further, the piston member further includes a diaphragm 121, the diaphragm 121 is perpendicular to the piston body 120, and the diaphragm 121 is fixed to the piston body 120. That is, the diaphragm 121 is fixedly disposed perpendicular to the piston body 120. Wherein the membrane 121 has elasticity.

When the piston body 120 is located at the current position, the switch assembly is separated from the diaphragm 121; when the switch assembly abuts against the diaphragm 121, the diaphragm 121 drives the piston body 120 to move from the current position to the second position; during the process of the piston body 120 moving from the current position to the second position, the diaphragm 121 deforms to a greater extent, and the generated elastic force is also greater. When the switch assembly releases the diaphragm 121, the elastic force generated by the diaphragm 121 drives the piston body 120 to return from the second position to the current position.

The specific structure of the switch assembly is described and illustrated below without limitation.

The switch assembly may include: a switch knob 140, a slider 141, and an elastic member 142.

Specifically, the switch knob 140 includes a first knob portion 1401 and a boss portion 1402, and the boss portion 1402 is fixed to the first knob portion 1401. The first knob portion 1401 is a portion operated by a user, and the protruding portion 1402 is used for abutting against the slider 141. It should be noted that the user in this embodiment may refer to a medical staff, but is not limited thereto.

Further, the slider 141 has a first side (not shown) and a second side (not shown) opposite to each other in the axial direction, the first side faces the switch knob 140, more specifically, the convex portion 1402 abuts against the first side of the slider 141, the second side faces the diaphragm 121, and the second side is used for abutting against the diaphragm 121.

It should be noted that the number of the protruding portions 1402 and the sliders 141 is not limited in this embodiment. In a specific example, the number of the protruding portions 1402 and the sliders 141 is plural and corresponds to one another.

Specifically, the first side surface has a first preset position and a second preset position, and the first side surface between the first preset position and the second preset position may be an inclined surface. More specifically, from the first preset position to the second preset position, the distance between the first side surface and the second side surface gradually increases. In other words, the height of the slider 141 gradually increases from the first preset position to the second preset position, wherein the height direction of the slider is the axial direction.

Further, the negative pressure flow diverter further comprises a housing 16, a sliding groove 160 is arranged on the inner side of the housing 16, the extending direction of the sliding groove 160 is axial, the sliding groove 160 is matched with the sliding block 141, and the sliding block 141 can move in the sliding groove 160 along the extending direction of the sliding groove 160, so that the sliding block 141 can move in the axial direction. In addition, the sliding groove 141 can limit the slider from moving in the circumferential direction, which is a circumferential direction perpendicular to the axial direction. It should be noted that the number of the slide grooves 160 on the housing 16 is determined by the number of the sliders 141.

Further, the elastic member 142 is disposed between the slider 141 and the diaphragm 121. More specifically, the elastic member 142 is disposed between the second side of the slider 141 and the diaphragm 121. In a specific example, the elastic member 142 may be a spring, but is not limited thereto. More specifically, an intermediate portion (not shown) of the elastic member 142 may be fixed to the housing 16.

In a specific implementation, when the negative pressure flow diverter is in an open state and the switch knob 140 is located at the open position, the protrusion 1402 abuts against a first preset position of the first side surface, and the slider 141 is located at a first slider position in the sliding groove 160. At this time, the second side of the slider 141 is separated from the diaphragm 121, and the elastic member 142 is not deformed. It should be noted that the position of the piston element is now determined by the adjustment assembly.

Further, during rotation of the switch knob from the open position to the closed position by the user, i.e., while the switch assembly is closed, the projection 1402 moves along the first side from the first predetermined position to the second predetermined position. Since the first side surface between the first preset position and the second preset position is an inclined surface, and the distance between the first side surface and the second side surface gradually increases from the first preset position to the second preset position, the protrusion 1402 pushes the slider 141 to move toward the film 121 in the sliding slot 160.

When the slide block 141 abuts against the diaphragm 121, the diaphragm 121 deforms and drives the piston main body 120 to move from the current position to the second position. As the slider 141 approaches the diaphragm 121, the elastic piece 142 is gradually deformed, and the degree of deformation is gradually increased.

Further, when the switch knob is in the off position, the protrusion 1402 moves to the second predetermined position and the protrusion 1402 abuts against the second predetermined position, the slider 141 is located at the second slider position in the sliding groove 160, the second side abuts against the diaphragm 121, the piston main body 120 is located at the second position, and the piston end 1201 is pressed into the air hole. Thus, the negative pressure flow diverter is in a closed state.

Further, during the rotation of the switch knob 140 from the off position to the on position by the user, that is, when the switch assembly is turned on, the protrusion 1402 moves from the second preset position to the first preset position along the first side. Since the first side surface between the first preset position and the second preset position is an inclined surface and the distance between the first side surface and the second side surface gradually decreases from the second preset position to the first preset position, the elastic force generated by the deformation of the elastic member 142 pushes the slider 141 to move in the direction away from the diaphragm 121, so that the slider 141 releases the diaphragm 121. Therefore, the diaphragm 121 can drive the piston body 120 to return to the current position. Thereby, the negative pressure drainage is opened.

Further, the first groove is disposed at the first preset position and the second preset position, and by adopting the scheme, the protruding portion 1402 can be fixed at the first preset position and the second preset position, so as to fix the slider 141 at the first slider position and the second slider position, and the negative pressure flow diverter can be kept in the open state or the closed state. In addition, because first preset position department and second preset position department all set up to first recess, can produce sound when bellying 1402 slips into first preset position and second preset position to carry out sound feedback when opening or closing negative pressure drainage device, be favorable to optimizing user's use and experience.

It should be noted that when the piston body 120 is located at the second position, the piston end 1201 is pressed into the air hole by interference, and the adjusting assembly cannot adjust the position of the piston body 120. When the piston main body 120 is returned from the second position to the current position, the position of the piston main body 120 may be adjusted again by the adjustment assembly.

The specific structure of the adjustment assembly is described and illustrated below without limitation.

The adjustment assembly may include: an adjusting knob 150, a transmission assembly 151 and an adjusting limit piece 152.

Specifically, the adjustment knob 150 is disposed along the axial direction and is rotatable in the circumferential direction, and the adjustment knob 150 includes a second knob portion (not shown) and a functional portion (not shown) in the axial direction. More specifically, the inner wall of the functional part is provided with threads, and the outer wall of the functional part is provided with an adjustment limiting part 1501 and a second groove 1502. The adjustment limiting portion 1501 may be a groove.

Further, the interior of the adjustment knob 150 is hollow, and the transmission assembly 151 and at least a portion of the piston body 120 are disposed inside the adjustment knob 150.

Specifically, the transmission assembly 151 includes a first transmission member 1511 and a second transmission member 1512, wherein the first transmission member 1511 is threadedly connected to the adjusting knob 150, and more specifically, the first transmission member 1511 has threads on an outer wall thereof, and the first transmission member 1511 is threadedly connected to an inner wall of the function portion.

Further, the second transmission member 1512 is connected to the first transmission member 1511, and the second transmission member 1512 is fixedly connected to the top end 1202 of the piston main body 120. The first transmission member 1511 is not directly fixed to the piston main body 120. More specifically, the middle position of the first transmission member 1511 is a hole through which the piston main body 120 is fixed to the diaphragm 121.

Further, the adjustment limiting member 152 is disposed in the adjustment limiting portion 1501 of the adjustment knob. Specifically, a limiting portion (not shown) is disposed inside the housing 16, and the adjustment limiting member 152 is located in a cavity formed by the limiting portion of the housing 16 and the adjustment limiting portion 1501 of the adjustment knob 150.

More specifically, the adjustment limiting member 152 is a first ball 152. In one non-limiting example, at least two first ball bearings 152 are disposed within the formed cavity, and the at least two second ball bearings 152 are sequentially disposed radially. By adopting the scheme, the friction force is reduced as much as possible when the adjusting knob 150 rotates, and the use experience of a user is further improved.

Further, the transmission assembly may further include: one end of the spring 1513 is fixed to the first transmission member 1511, and the other end of the spring 1513 is fixed to the second transmission member 1512. That is, the second transmission member 1512 and the first transmission member 1511 are elastically connected by a spring 1513. With this arrangement, it is advantageous to cause the piston member 12 to move more gently as the adjustment knob 150 is rotated.

In an implementation, when the user rotates the adjustment knob 150, the adjustment knob 150 can only rotate in the circumferential direction and cannot move in the axial direction due to the limitation of the adjustment limiting member 152, that is, the adjustment knob 150 is fixed in the axial direction. Compared with the prior art, the scheme that the adjusting knob 150 can be screwed in or out can reduce the requirement of cleaning and is convenient for users to use.

More specifically, when the user rotates the adjusting knob 150 along the first direction, the first transmission member 1511 moves in the axial direction towards the direction away from the air hole to drive the piston main body 120 to move towards the direction away from the air hole, so that more negative pressure gas can enter the gas communication pipeline, thereby increasing the pressure of the negative pressure gas in the negative pressure flow diverter.

Further, when the user rotates the adjusting knob to the second direction (where the second direction is the opposite direction of the first direction), the first transmission member 1511 axially moves toward the direction close to the air hole, that is, moves toward the direction deep into the air hole, so as to drive the piston main body 120 to move toward the direction deep into the air hole, thereby reducing the negative pressure gas entering the air outlet pipeline 11, and thus reducing the pressure of the negative pressure gas in the negative pressure flow diverter.

Further, a second ball 162 is fixed inside the housing 16, and more specifically, a spring is disposed inside the housing 16, one end of the spring is fixed to the inner wall of the housing 16, and the other end of the spring is fixed to the second ball 162, and a plurality of second grooves 1502 are disposed on the outer wall of the adjusting knob 150, and the second grooves 1502 are used for accommodating the second ball 162.

More specifically, the plurality of second grooves 1502 are uniformly disposed on the adjustment knob 150. By adopting the structure, when the user rotates the adjusting knob 150, the second ball 162 rotates relative to the adjusting knob 150, the adjusting knob 150 rotates to different positions, and the second ball 162 can fall into different second grooves 1502, so that sound feedback can be realized when the pressure of the negative pressure gas is adjusted, and the use experience of the user can be further improved.

It should be understood that the term "and/or" herein is merely a kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/", herein, indicates that the former and latter associated objects are in an "or" relationship.

The "plurality" appearing in the embodiments of the present application means two or more.

The descriptions of the first, second, etc. appearing in the embodiments of the present application are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.

Claims

1. The utility model provides a negative pressure drainage ware, its characterized in that has the gas circuit of admitting air and gives vent to anger the gas circuit, the gas circuit of admitting air passes through the gas pocket intercommunication with the gas circuit of giving vent to anger, negative pressure drainage ware includes:

a piston member fitted to the air hole;

an adjustment assembly for adjusting the position of the piston member, the adjustment assembly adjusting the extreme position of the piston member within the bore to a first position;

a switch assembly for moving the piston member to a second position within the air bore when closed and moving the piston member away from the second position when open;

wherein the second position is deeper within the gas bore relative to the first position.

2. The negative pressure flow diverter of claim 1, wherein the piston member comprises:

a piston body fitted with the air hole;

the diaphragm is fixedly connected with the piston main body;

when the switch component abuts against the diaphragm, the diaphragm drives the piston main body to move to the second position;

when the switch component releases the diaphragm, the diaphragm drives the piston main body to return to the second position.

3. The negative pressure flow diverter of claim 2, wherein the switch assembly comprises:

a slider;

the switch knob is used for adjusting the position of the sliding block;

when the switch is closed, the switch knob drives the sliding block to abut against the diaphragm;

when turned on, the switch knob releases the slider to cause the slider to release the diaphragm.

4. The negative pressure flow diverter of claim 3, further comprising: a housing having a slide slot within which the slide moves.

5. The negative pressure flow diverter according to claim 3, wherein the slider has a first side surface and a second side surface opposite to each other, the first side surface is abutted by the protrusion of the switch knob, the second side surface is used for abutting the membrane, wherein the first side surface has a first preset position and a second preset position, and the distance between the first side surface and the second side surface gradually increases from the first preset position to the second preset position of the first side surface;

when the bulge part abuts against the second preset position, the sliding block abuts against the diaphragm;

when the bulge part is abutted against the first preset position, the slide block releases the membrane.

6. The negative pressure flow diverter of claim 5, wherein the switch assembly further comprises: an elastic member located between the second side and the diaphragm;

when the protruding part moves from the first preset position to the second preset position, the deformation degree of the elastic part is gradually increased.

7. The negative pressure flow diverter of claim 5, wherein the first and second preset positions are each provided with a first groove.

8. The negative pressure flow diverter of claim 1, wherein the adjustment assembly comprises:

adjusting a knob;

the transmission assembly is in threaded connection with the adjusting knob, and when the adjusting knob rotates, the transmission assembly drives the piston piece to move axially;

and the adjusting limiting part is used for limiting the adjusting knob in the axial direction.

9. The negative pressure flow diverter of claim 8, wherein the adjusting knob has an adjusting limiting portion on the outer side thereof, the adjusting limiting member is located in a cavity formed by the adjusting limiting portion and the limiting portion of the housing, and the adjusting limiting member is a first ball.

10. The negative pressure flow diverter of claim 8, further comprising a housing, wherein a second ball is fixed on the housing, a plurality of second grooves are arranged on the outer wall of the adjusting knob along the circumferential direction, and the second grooves are used for accommodating the second ball.