CN112972847A

CN112972847A - Anesthesia machine with disinfection function

Info

Publication number: CN112972847A
Application number: CN202110082535.8A
Authority: CN
Inventors: 郑晋伟; 陈骏萍
Original assignee: Ningbo Huamei Hospital University of CAS
Current assignee: Ningbo Huamei Hospital University of CAS
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-06-18

Abstract

The invention discloses an anesthesia machine with a disinfection function, which comprises an anesthesia machine main body; the breathing module is arranged on the anesthesia machine body; the gas supply device is arranged on the anesthesia machine body and is used for driving the gas in the breathing module to circulate; the disinfection branch is arranged in the shell, one end of the disinfection branch is communicated with the inspiration branch, and the other end of the disinfection branch is communicated with the expiration branch; the sterilizing gas generator is arranged on the anesthesia machine main body and is communicated with the sterilizing branch through a pipeline. According to the invention, the disinfection branch is arranged, when the breathing module is disinfected, the disinfection branch is matched with the inner loop of the breathing module to form the airflow circulation path, and the air supply device works, so that the disinfection gas in the disinfection branch enters the breathing module along with the airflow circulation path to disinfect the inner loop of the breathing module.

Description

Anesthesia machine with disinfection function

Technical Field

The invention belongs to the field of medical equipment, and particularly relates to an anesthesia machine with a disinfection function.

Background

Now, the anesthesiology far exceeds the aim of pure operation pain relief, the working range is not limited to an operating room, the anesthesiology not only comprises anesthesia pain relief, but also relates to preparation and treatment of the whole operation period before and after anesthesia, the anesthesia means that a patient is wholly or locally unconscious temporarily by using a medicine or other methods, can receive operation treatment smoothly, and can quickly recover the original intuition and reflection after the operation is completed, the anesthesia machine is a high-grade medical device which can deliver various gases and volatile anesthetics, control and assist the respiration of the patient, and simultaneously adjust the consciousness and pain level of the patient in the operation process, the anesthetic is delivered into the alveolus of the patient through a mechanical loop to form anesthetic gas partial pressure which is directly inhibited on the central nervous system after being dispersed into blood, thereby generating the effect of general anesthesia, in clinical use, the anesthesia machine needs to be sterilized after each use in order to avoid cross infection among different patients.

The disinfection mode commonly adopted at present is disassembly and assembly disinfection or disinfection by a disinfector for an anesthesia machine. And disassembling the breathing circuit part of the machine for high-temperature and high-pressure sterilization or disinfection by glutaraldehyde, ethylene oxide and the like. However, the need for repeated mounting and dismounting makes the operation troublesome and also causes damage to the machine due to improper operation. In addition, the anesthetic breathing apparatus can be sterilized only once after being used for a period of time, and in many cases, one anesthetic machine can be used for a plurality of operations one day, and it is difficult to sterilize each case one by one so that the anesthetic breathing apparatus can be in a sterile state for a long time. The sterilizing machine for the anesthesia machine is required to be connected with a pipeline of the anesthesia machine before sterilization, the operation is complex, and the sterilizing machine for the anesthesia machine occupies a large space.

Disclosure of Invention

The invention provides an anesthesia machine with a disinfection function, which is convenient and fast to operate, in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: an anesthesia machine with disinfection function comprises

An anesthesia machine main body;

the breathing module is arranged on the anesthesia machine main body and comprises a shell, an expiration branch arranged in the shell and an inspiration branch arranged in the shell, wherein one-way valves are arranged in the expiration branch and the inspiration branch, and when the anesthesia machine works, the expiration branch and the inspiration branch are both connected with an air supply pipe;

the gas supply device is arranged on the anesthesia machine body and is used for driving the gas in the breathing module to circulate;

the disinfection branch is arranged in the shell, one end of the disinfection branch is communicated with the inspiration branch, and the other end of the disinfection branch is communicated with the expiration branch;

the sterilizing gas generator is arranged on the anesthesia machine main body and is communicated with the sterilizing branch through a pipeline.

The disinfection branch is arranged and communicated with the air suction branch and the air expiration branch, when the breathing module is disinfected, the disinfection branch is matched with a loop in the breathing module to form an airflow circulating passage, the disinfection gas generator generates disinfection gas to be sent into the disinfection branch, the air supply device works to enable the airflow to enter the disinfection branch from the air suction branch and then enter the air expiration branch, the disinfection gas in the disinfection branch enters the breathing module along with the airflow, the loop in the breathing module is disinfected, the disinfection mode does not need to disassemble and assemble the breathing module, the operation is simple, the disinfection efficiency is high, and the damage to equipment caused by repeated disassembly and assembly is avoided; this disinfection mode utilizes the air feeder of anesthesia machine itself to transmit the gas of disinfecting, simplifies equipment, and occupation space is little, need not the tube coupling before the disinfection, the simple operation.

Preferably, the air outlet end of the inspiration branch and the air inlet end of the expiration branch are both provided with an isolating device, and two ends of the disinfection branch are respectively positioned between the isolating device and the one-way valve; the air outlet end of the disinfection branch and the air inlet end of the disinfection branch are both provided with a closing assembly; when the anesthesia machine is used for supplying anesthesia gas, the isolating device is opened, the expiration branch and the inspiration branch are communicated with the gas supply pipe, the closing component closes the disinfection branch, and the residual or disinfection gas permeating into the disinfection branch is prevented from flowing to the expiration branch and the inspiration branch, so that the safety is high; when the anesthesia machine is sterilized after being used, the isolation device is closed to prevent the sterilization gas from diffusing to the outside, the closing component is opened, and the sterilization branch is communicated with the expiration branch and the inspiration branch; through setting up isolating device and closing assembly, realize the switching of anesthesia machine different states fast.

Preferably, the disinfecting branch is an arc-shaped pipeline, an angle α is formed between a tangent of a center line of the disinfecting branch at the disinfecting branch air outlet and a center line in the exhalation branch, and the angle α is greater than 90 °; the tangent line of the central line of the disinfection branch at the air inlet of the disinfection branch and the central line in the air suction branch form an included angle beta, and the included angle beta is larger than 90 degrees; by setting the included angle alpha to be larger than 90 degrees and the included angle beta to be larger than 90 degrees, when the breathing module is disinfected, gas flowing into the expiration branch from the disinfection branch firstly enters the area between the air outlet hole of the disinfection branch and the isolation device, and the isolation device corresponding to the expiration branch is disinfected, gas flowing into the disinfection branch from the inspiration branch firstly enters the area between the air inlet of the disinfection branch and the isolation device, and the isolation device corresponding to the inspiration branch is disinfected, so that non-disinfected dead angles are avoided, and the disinfection effect is improved.

Preferably, the isolating device comprises a mounting hole formed in the housing, a connecting pipe arranged in the mounting hole door, a baffle ring fixedly arranged in the connecting pipe, a plurality of blocking pieces rotatably arranged in the connecting pipe, a ring piece rotatably arranged in the connecting pipe, an arc-shaped groove arranged on the connecting pipe, a push rod arranged on the ring piece, a rotating piece sleeved on the connecting pipe, a guide assembly used for driving the rotating piece to rotate, and a straight groove arranged on the inner wall of the rotating piece; the connecting pipe is in rotation stopping connection with the shell and is communicated with the expiration branch or the inspiration branch; one end of the valve plate is hinged with the baffle ring, and the edge shapes of the valve plates are matched with each other to close the connecting pipe; the annular part is connected with the blocking part through a movable rod, one end of the push rod is connected with the rotating part, and the push rod part is slidably arranged in the arc-shaped groove; the straight flute with the axis of connecting pipe is parallel, just but push rod one end slidable locates in the straight flute. When the air supply pipe is not connected with the connecting pipe, the plurality of blocking pieces are mutually attached, so that a channel in the connecting pipe is closed, and the sterilizing gas is prevented from being diffused to the outside when the breathing module is sterilized; when the anesthesia machine is used for conveying anesthesia gas to a patient, the gas supply pipe is sleeved on the connecting pipe, the gas supply pipe pushes the rotating piece to move towards the inside of the mounting hole after contacting with the rotating piece, and due to the guiding effect of the guiding assembly, the rotating piece synchronously rotates in the moving process so as to drive the blocking pieces to rotate, and the plurality of blocking pieces are separated from each other so that channels in the connecting pipe are opened; the opening mode does not need to be provided with a specific switch device, the air supply pipe is connected with the connecting pipe, the communication of the air inlet branch, the air expiration branch and the air supply pipe can be realized, and the operation is convenient.

Preferably, the guide assembly comprises a first elastic part sleeved on the connecting pipe, a guide groove arranged on the side wall of the mounting hole, a guide rod arranged on the side wall of the rotating part, a limiting concave part arranged on the guide groove and facing one end of the first elastic part, a stepped hole arranged on the side wall of the rotating part, a blocking part arranged on the guide rod, a second elastic part sleeved on the guide rod, an inner hole arranged in the guide rod, a sliding rod arranged in the inner hole in a sliding manner, a third elastic part arranged in the inner hole and connected with the sliding rod at one end, and a pushing part arranged on the rotating part in a sliding manner; one end of the first elastic piece is abutted with the rotating piece, and the other end of the first elastic piece is abutted with the wall of the mounting hole; the groove depth of the limiting concave part is greater than that of the guide groove, the guide rod can be slidably arranged in the stepped hole, one end of the second elastic part is abutted against the blocking part, and the other end of the second elastic part is abutted against the end part of the stepped hole; one end of the pushing piece is in contact with the guide rod, and the other end of the pushing piece extends out of the rotating piece. When the rotating piece moves under the pushing of the air supply pipe, the rotating piece rotates simultaneously due to the matching of the guide rod and the guide groove, so that the annular piece is driven to rotate, and the channel in the connecting pipe is opened. And when the air feed pipe is connected at the connecting pipe, will push away a promotion towards guide bar one side, the guide bar is pushed to the guide way under the effect that pushes away the piece for the sliding bar contacts with the guide way bottom, and when the guide bar moved to spacing concave part along the guide way, under the effect of third elastic component, sliding bar one end card was gone into spacing concave part, prevented to rotate and retreated under the promotion of first elastic component, thereby the position of locking rotation piece, makeed the stifled piece keep open mode. When the air supply pipe is detached from the connecting pipe, the pushing piece and the guide rod reset under the action of the second elastic piece, so that the sliding rod exits from the limiting concave part, the rotating piece resets under the pushing of the first spring, and the channel in the connecting pipe is closed by the blocking piece.

Preferably, the rotating part is provided with a chamfer part on one side of the second elastic part, the chamfer part is positioned on one side of the rotating part close to the center, and the chamfer part is covered with a rubber pad. Through setting up chamfer portion, the air feed pipe box with connecting pipe tip butt and extrusion rubber pad when the connecting pipe, rubber pad deformation forms sealedly with the air feed pipe cooperation when resumeing, prevents the gas leakage.

Preferably, the closing assembly comprises a fixed plate fixedly arranged in the disinfection branch, a plurality of first vent holes arranged on the fixed plate, a support rod fixedly arranged on the fixed plate, a movable plate slidably arranged on the support rod, a plurality of second vent holes arranged on the movable plate, a first movable cavity arranged at the end part of the mounting hole, a first push plate with one end slidably arranged in the first movable cavity, a second movable cavity arranged around the disinfection branch, and a second push plate slidably arranged in the second movable cavity; the movable piece with the bracing piece cooperation of splining, the second air vent with first air vent sets up in a staggered way, first push pedal with the moving part towards first elastic component one end links to each other, just the second activity chamber with first activity chamber passes through the air vent intercommunication second push pedal one end with the movable piece links to each other. The first push plate and the rotating piece move synchronously, when the first push plate compresses gas in the first movable cavity, the gas is pushed into the second movable cavity through the air channel, and then the second push plate is pushed to move, so that the movable sheet moves towards the fixed sheet until the movable sheet is attached to the fixed sheet to isolate the disinfection branch from the air inlet branch and the expiration branch; when first push pedal withdrawed from first activity chamber, the gas in the second activity intracavity was taken out to first activity chamber for the second push pedal is the stationary blade removal dorsad, and the movable plate separates in order to open the disinfection branch road with the stationary blade, through setting up the first activity chamber of air duct intercommunication and second activity chamber, makes the movable plate and rotates the simultaneous movement, realizes disinfecting branch road open-close state and connecting pipe open-close state's synchronous switch, improves the preparation work efficiency and the disinfection efficiency of anesthesia machine.

Preferably, a first annular groove is formed in one side, facing the movable sheet, of the fixed sheet, and a second annular groove is formed in one side, facing the movable sheet, of the fixed sheet; the movable sheet is provided with a first bulge corresponding to the first annular groove, and the movable sheet is provided with a second bulge corresponding to the first annular groove; the first annular groove is arranged on one side of the first vent hole, which is far away from the center of the fixing piece, and the second annular groove is arranged on one side of the first vent hole, which is close to the center of the fixing piece; a through groove is formed in the side wall of the disinfection branch, and the second push plate part penetrates through the through groove to be connected with the movable plate; and when the movable sheet is attached to the fixed sheet, the second push plate part enters the gas storage cavity. When the movable sheet is attached to the fixed sheet, the first protruding part is clamped into the first annular groove, and the second protruding part is clamped into the second annular groove, so that the disinfection gas in the disinfection branch is prevented from permeating into the air inlet branch and the air outlet branch, the sealing effect is improved, and the safety is high; the gas storage cavity is arranged, when the movable sheet is attached to the fixed sheet, the second push plate partially enters the gas storage cavity, and gas in the gas storage cavity is compressed, so that the gas in the gas storage cavity has a tendency of pushing the second push plate to move back to the fixed sheet; the second push plate is back to the fixed sheet moves, and the gas in the gas storage cavity provides an initial driving force, so that the movable sheet is prevented from being separated from the fixed sheet due to the fact that the movable sheet and the fixed sheet are prevented from being blocked by suction force generated after the movable sheet and the fixed sheet are attached tightly.

Preferably, the breathing module further comprises a carbon dioxide absorber arranged on the shell, wherein the carbon dioxide absorber comprises a containing tank detachably arranged on the shell, an air guide pipe rotatably arranged in the containing tank, a plurality of exhaust holes formed in the side wall of the air guide pipe, a partition plate arranged in the containing cavity, a containing cavity arranged on one side of the partition plate and used for storing soda lime, and a gas buffering cavity arranged on the other side of the partition plate; an inner partition part is arranged in the gas guide pipe, a gas guide cavity is arranged on one side of the gas guide pipe, and a connecting part is arranged on the other side of the gas guide pipe; the partition plate is provided with a plurality of first air leakage holes, and the aperture of each air leakage hole is gradually reduced from the center to the edge; the slow air cavity corresponds to the exhaust hole. Through the return circuit intercommunication in with air duct and the exhale module, and correspond the gas chamber of slowing down with the exhaust hole, gaseous entering is slowed down the gas chamber and is then held the chamber diffusion for gaseous and more soda lime contact, improve carbon dioxide's absorption efficiency.

Preferably, the carbon dioxide absorber further comprises a driving part for driving the air duct to rotate, a helical blade arranged around the air duct, a conical sleeve arranged in the accommodating cavity, a guide plate arranged in the gas buffering cavity, a first supporting part connected with the conical sleeve, and a second supporting part connected with the upper end of the conical sleeve; the output shaft of the driving part is connected with the connecting part, a plurality of second air leakage holes are formed in the spiral blade, the second air leakage holes are formed along the track of the spiral blade, and the hole diameter of each second air leakage hole is gradually increased along the direction back to the partition plate; the conical sleeve surrounds the helical blade, the first supporting piece is connected with the side wall of the containing tank, the second supporting piece is connected with the air guide pipe in a rotating mode, and one end of the second supporting piece is fixed to the containing tank. The rotatable air guide pipe and the helical blade are arranged, soda lime at the bottom of the accommodating cavity is conveyed upwards, so that the soda lime is in a moving state in the accommodating cavity, exhaled air is fully contacted with the soda lime, the absorption efficiency of carbon dioxide is improved, the helical blade is approximately conical in the height direction, the soda lime is gradually dispersed in the upward conveying process, and the soda lime is prevented from caking after absorbing moisture in circulating gas; the aperture of the second air leakage hole is gradually increased along the direction back to the partition plate, the gas discharged by the exhaust hole gradually rises along the second air leakage hole, and the aperture is gradually increased along the direction back to the partition plate, so that the absorption effect is improved; the aperture through the gas leakage hole is gradually reduced from the center to the edge, so that the gas leakage amount at the middle part of the gas leakage hole is large, and the guide plate guides the gas exhausted from the exhaust hole, so that most of the gas is exhausted through the spiral pressing piece.

In conclusion, the sterilization branch is arranged to communicate the inspiration branch and the expiration branch, when the breathing module is sterilized, the sterilization branch is matched with the loop in the breathing module to form an airflow circulation passage, the sterilization gas generator generates sterilization gas to be sent into the sterilization branch, the air supply device works to enable the airflow to enter the sterilization branch from the inspiration branch and then enter the expiration branch, the sterilization gas in the sterilization branch enters the breathing module along with the sterilization gas to sterilize the loop in the breathing module, the sterilization mode does not need to disassemble and assemble the breathing module, the operation is simple, the sterilization efficiency is high, and the damage to equipment caused by repeated disassembly and assembly is avoided; this disinfection mode utilizes the air feeder of anesthesia machine itself to transmit the gas of disinfecting, simplifies equipment, and occupation space is little, need not the tube coupling before the disinfection, the simple operation.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a partial cross-sectional structural view taken along a-a in fig. 2.

Fig. 4 is a partial cross-sectional structural view taken along B-B of fig. 2.

Fig. 5 is an enlarged view at C in fig. 4.

Fig. 6 is a perspective view of a portion of the structure of the breathing module, isolation device and closure assembly.

Fig. 7 is an enlarged view at D in fig. 6.

Fig. 8 is an enlarged view at F in fig. 7.

Fig. 9 is an enlarged view at E in fig. 6.

Fig. 10 is a perspective view of a carbon dioxide absorber according to the present invention.

Fig. 11 is a cut-away perspective view of a carbon dioxide absorber of the present invention.

Fig. 12 is a perspective view of a rotating member in the present invention.

Fig. 13 is a perspective view of a connection pipe in the present invention.

Fig. 14 is a cut-away perspective view of the housing of the present invention.

Fig. 15 is an enlarged view at G in fig. 14.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1-15, an anesthesia machine with disinfection function comprises an anesthesia machine main body 10, wherein the anesthesia machine main body 10 is at least provided with a breathing module 20, a gas supply device and a vaporizer 3; the evaporator 3 is used for generating anesthetic gas and inputting the anesthetic gas into the breathing module 20; the gas supply device is a compressed oxygen and liquid nitrous oxide contained in a steel cylinder or a central gas supply source (not shown in the figure) and a wind box 4, and is used for driving the gas in the breathing module 20 to circulate; the vaporizer 3 is used for vaporizing the liquid medicine into usable gas anesthetic, and the usable gas anesthetic enters the human body through the breathing module 20; the respiratory module 20 comprises a housing 21, an expiration branch 22 and an inspiration branch 23; the expiration branch 22 and the inspiration branch 23 are both provided with a one-way valve 24, when the anesthesia machine works, the expiration branch 22 and the inspiration branch 23 are both connected with an air supply pipe (not shown in the figure), the air supply pipe is communicated with the respiratory tract of a patient, and anesthetic gas is input into the respiratory tract; a disinfection branch 25 is further arranged in the shell 21, one end of the disinfection branch 25 is communicated with the inspiration branch 23, the other end of the disinfection branch 25 is communicated with the expiration branch 22, and the disinfection branch 25 is matched with an inner loop of the respiration module 20 to form an airflow circulation path; the anesthesia machine main body 10 is provided with a sterilizing gas generator 51 for generating sterilizing gas, and the sterilizing gas generator 515 is communicated with the sterilizing branch 25 through a pipeline 53.

Furthermore, the air outlet end of the inspiration branch 23 and the air inlet end of the expiration branch 22 are both provided with an isolation device 60, and two ends of the disinfection branch 25 are respectively located between the isolation device 60 and the one-way valve 24; the air outlet end of the disinfection branch 25 and the air inlet end of the disinfection branch 25 are both provided with a closing component 70 for controlling the communication between the disinfection branch 25 and the breathing module 20; when the anesthesia machine is used for supplying anesthesia gas, the isolation device 60 is opened, the expiration branch 22 and the inspiration branch 23 are communicated with the air feeding pipe, the closing component 70 closes the disinfection branch 25, so that the residual disinfection gas in the disinfection branch 25 or the disinfection gas permeating into the disinfection branch 25 is prevented from flowing to the expiration branch 22 and the inspiration branch 23, and the safety is high; when the anesthesia machine is disinfected after being used, the isolation device 60 is closed, the disinfection gas is prevented from being diffused to the outside, the closing component 70 is opened, the disinfection branch 25 is communicated with the expiration branch 22 and the inspiration branch 23, the disinfection gas generated by the disinfection gas generator is sent into the disinfection branch 25, the gas supply device works, so that the gas flow enters the disinfection branch 25 from the inspiration branch 23 and then enters the expiration branch 22, the disinfection gas in the disinfection branch 25 enters the breathing module 20 along with the disinfection gas, a loop in the breathing module 20 is disinfected, the disinfection mode does not need to disassemble and assemble the breathing module 20, and the operation is simple.

Further, as shown in fig. 3, the disinfecting branch 25 is configured as an arc-shaped pipeline 53, and a tangent of a center line of the disinfecting branch 25 at the air outlet of the disinfecting branch 25 makes an angle α with the gas flow direction in the expiratory branch 22, where the angle α is greater than 90 °, that is, a vector angle between the flow direction of the gas flow entering the expiratory branch 22 from the disinfecting branch 25 and the flow direction of the gas in the expiratory branch 22 is greater than 90 °; an included angle beta is formed between the tangent line of the central line of the disinfection branch 25 at the air inlet of the disinfection branch 25 and the flow direction of the gas in the air suction branch 23, and the included angle beta is larger than 90 degrees, namely the vector included angle between the flow direction of the gas flow entering the disinfection branch 25 from the air expiration branch 22 and the flow direction of the gas in the air expiration branch 22 is larger than 90 degrees; when the respiratory module 20 is sterilized, the gas flowing into the expiratory branch 22 from the sterilizing branch 25 firstly enters the area between the air outlet hole of the sterilizing branch 25 and the isolating device 60, and the isolating device 60 corresponding to the expiratory branch 22 is sterilized, and the gas flowing into the sterilizing branch 25 from the inspiratory branch 23 firstly enters the area between the air inlet hole of the sterilizing branch 25 and the isolating device 60, and the isolating device 60 corresponding to the inspiratory branch 23 is sterilized, so that the sterilizing effect is improved.

Specifically, the isolating device 60 comprises a mounting hole 61, a connecting pipe 62, a baffle ring 63, a blocking piece 64, a ring-shaped piece 65, an arc-shaped groove 66, a push rod 67, a rotating piece 68, a guide assembly and a straight groove 610; the number of the mounting holes 61 is two, the mounting holes are formed in the shell 21, and the two mounting holes 61 correspond to the air inlet branch pipes or the air outlet branch pipes respectively; the connecting pipe 62 is partially embedded in the mounting hole 61 and is in rotation-stopping connection with the mounting hole 61, and the connecting pipe 62 is communicated with the expiration branch 22 or the inspiration branch 23; the baffle ring 63 is fixedly arranged on the side wall of the connecting pipe 62 and is a part extending towards the center of the connecting pipe 62; the plurality of the blocking pieces 64 are provided, one ends of the blocking pieces are hinged with the baffle ring 63 and can be rotatably arranged in the connecting pipe 62, and the edge shapes of the plurality of the valve plates are matched with each other to close a channel in the connecting pipe 62; the ring-shaped element 65 is rotatably arranged in the connecting pipe 62, the ring-shaped element 65 is arranged on the side of the blocking element 64, which faces away from the blocking ring 63, and the ring-shaped element 65 is connected with the blocking element 64 through a movable rod 611; the movable rods 611 are arc-shaped and provided with a plurality of movable rods, the movable rods correspond to the blocking piece 64 respectively, one end of each movable rod is hinged to the blocking piece 64, and the other end of each movable rod is hinged to the annular piece 65; the arc-shaped groove 66 is arranged on the side wall of the connecting pipe 62, and the arc-shaped groove 66 penetrates through the side wall of the connecting pipe 62; one end of the push rod 67 is fixedly arranged on the annular member 65, and the other end of the push rod passes through the arc-shaped groove 66 and is in sliding connection with the arc-shaped groove 66; the rotating part 68 is slidably arranged on the connecting pipe 62 and connected with one end of the push rod 67, and the rotating part 68 rotates to drive the annular part 65 to rotate through the push rod 67; the guide assembly is used for driving the rotating piece 68 to rotate when the rotating piece 68 moves; the straight flute 610 is opened on rotating the interior wall of piece 68, the straight flute 610 with the axis of connecting pipe 62 is parallel, just but push rod 67 one end slidable locates in the straight flute 610, rotate piece 68 and promote push rod 67 synchronous rotation, rotate piece 68 simultaneously and slide along straight flute 610 relatively.

When the air supply pipe is not connected with the connecting pipe 62, the plurality of blocking pieces 64 are mutually attached, so that the channel in the connecting pipe 62 is closed, and the sterilizing gas is prevented from being diffused to the outside when the breathing module 20 is sterilized; when the anesthesia machine is used for delivering anesthesia gas to a patient, the connecting pipe 62 is sleeved with the gas delivery pipe, the gas delivery pipe pushes the rotating piece 68 to move towards the inside of the mounting hole 61 after contacting with the rotating piece 68, due to the guiding effect of the guiding assembly, the rotating piece 68 synchronously rotates in the moving process, so that the blocking pieces 64 are driven to rotate, the blocking pieces 64 are separated from each other, and the channel in the connecting pipe 62 is opened; in this way, a specific switch device is not required to be arranged, and the air supply pipe is connected with the connecting pipe 62 to communicate the air supply branch, the expiration branch 22 and the air supply pipe, so that the operation is convenient.

Furthermore, a chamfered part 681 is arranged on the side of the rotating part 68 opposite to the second elastic part 696, the chamfered part 681 is located on the side of the rotating part 68 close to the center, and a rubber pad covers the chamfered part 681; the chamfered portion 681 is provided to press the rubber gasket against the end of the connecting pipe 62 when the gas supply pipe is fitted to the connecting pipe 62, and to form a seal with the gas supply pipe when the rubber gasket is deformed and restored, thereby preventing gas leakage.

The guide assembly includes a first elastic member 691, a guide groove 692, a limit recess 693, a stepped hole 694, a guide rod 695, a blocking portion 6951, a second elastic member 696, an inner hole 6952, a sliding rod 697, a third elastic member 698 and a pushing member 699; the first elastic member 691 is a spring and is sleeved on the connecting pipe 62, one end of the first elastic member 691 abuts against the rotating member 68, and the other end abuts against the hole wall of the mounting hole 61; the guide groove 692 is opened on the side wall of the mounting hole 61, and the guide groove 692 is partially spiral and is arranged around the center of the mounting hole 61; the limiting concave part 693 is disposed at one end of the guide groove 692 near the first elastic member 691, and the depth of the limiting concave part 693 is greater than that of the guide groove 692; the stepped hole 694 is arranged on the rotating part 68, and the axis of the stepped hole 694 is perpendicular to the axis of the rotating part 68; the guide rod 695 is slidably disposed in the stepped hole 694, and one end of the guide rod protrudes out of the stepped hole 694 into the guide groove 692, and the guide piece is not in contact with the bottom of the guide groove 692 in a free state; the stopper 6951 is provided on the guide bar 695, and the stopper 6951 is a boss provided on the guide bar 695; the second elastic member 696 is a spring, is sleeved on the guide rod 695, and has one end abutting against the stopper 6951 and the other end abutting against the end of the stepped hole 694; the inner bore 6952 is opened in the guide rod 695 and is arranged coaxially with the guide rod 695; the sliding rod 697 is slidably disposed in the inner bore 6952; the third elastic member 698 is a spring, which is disposed in the inner hole 6952 and has one end connected to the sliding rod 697, and when the guide rod 695 is slid toward the guide slot 692 as a whole, the sliding rod 697 compresses the third spring after contacting the bottom of the guide slot 692 and slides in the inner hole 6952 with respect to the guide rod 695, so as to prevent the guide rod 695 from rigidly contacting the guide slot 692; the pushing member 699 is slidably disposed through the rotating member 68, and has one end contacting the guiding rod 695 and the other end extending out of the rotating member 68.

When the rotation member 68 is moved by the air supply pipe, the rotation member 68 is rotated simultaneously due to the engagement of the guide bar 695 with the guide groove 692, and the ring member 65 is never rotated, so that the passage in the connection pipe 62 is opened. When the air supply pipe abuts against the chamfered portion 681, the push piece 699 is pushed toward the guide rod 695, the guide rod 695 is pushed toward the guide groove 692 by the push piece 699, the slide rod 697 is brought into contact with the bottom of the guide groove 692, and when the guide rod 695 moves to the stopper concave portion 693 along the guide groove 692, one end of the slide rod 697 is caught by the stopper concave portion 693 by the third elastic piece 698, and the rotation member 68 is prevented from retreating by the first elastic piece 691, so that the position of the rotation member 68 is locked, and the stopper 64 is kept in the open state. When the air supply pipe is detached from the connection pipe 62, the push member 699 and the guide rod 695 are reset by the second elastic member 696, so that the slide rod 697 exits the limiting recess 693, and the rotation member 68 is reset by the push of the first spring, so that the blocking member 64 closes the passage in the connection pipe 62.

The closing component 70 comprises a fixed plate 71, a first vent hole 711, a support rod 72, a movable plate 73, a second vent hole 731, a first movable cavity 74, a first push plate 75, a second movable cavity 76 and a second push plate 77; the fixing plate 71 is fixedly arranged in the disinfection branch 25, and the central line of the disinfection branch 25 penetrates through the middle of the plane of the fixing plate 71; the pair of first vent holes 711 is provided in plurality and opened in the fixing piece 71, and the plurality of first vent holes 711 are provided around the axis of the fixing piece 71; the supporting rod 72 is fixedly arranged on the fixing plate 71, and the supporting rod 72 is arranged perpendicular to the fixing plate 71; the movable sheet 73 is slidably arranged on the support rod 72 and is in rotation stopping fit with the support rod 72; the plurality of second vent holes 731 are arranged on the movable sheet 73, the second vent holes 731 and the first vent holes 711 are arranged in a staggered manner, when the movable sheet 73 is attached to the fixed sheet 71, the first vent holes 711 and the second vent holes 731 are blocked, so that the disinfection branch 25 is closed, and the structure is simple; the first movable cavity 74 is arranged at the end part of the mounting hole 61, the first movable cavity 74 is annular, and the axis of the first movable cavity is coincident with the axis of the mounting hole 61; one end of the first push plate 75 is slidably disposed in the first movable chamber 74, and the first push plate 75 is connected to one end of the movable member facing the first elastic member 691; the second movable cavity 76 is arranged in the shell 21 and surrounds the disinfection branch 25, and the second movable cavity 76 is communicated with the first movable cavity 74 through an air duct 710; the second push plate 77 is slidably disposed in the second movable cavity 76, and one end of the second push plate is connected to the movable plate 73, so that the push rod 67 drives the movable plate 73 to move synchronously.

The first push plate 75 and the rotating member 68 move synchronously, when the first push plate 75 compresses the gas in the first movable chamber 74, the gas is pushed into the second movable chamber 76 through the air duct 710, and then the second push plate 77 is pushed to move, so that the movable plate 73 moves towards the fixed plate 71 until the movable plate 73 is attached to the fixed plate 71 to isolate the disinfection branch 25 from the air inlet branch and the exhalation branch 22; when the first push plate 75 exits the first movable cavity 74, the gas in the second movable cavity 76 is pumped to the first movable cavity 74, so that the second push plate 77 moves back to the fixed plate 71, the movable plate 73 is separated from the fixed plate 71 to open the disinfection branch 25, the first movable cavity 74 and the second movable cavity 76 are communicated through the air passage 710, the movable plate 73 and the rotating piece 68 move simultaneously, the synchronous switching between the opening and closing states of the disinfection branch 25 and the opening and closing states of the connecting pipe 62 is realized, and the preparation work efficiency and the disinfection efficiency of the anesthesia machine are improved.

Further, a first annular groove 712 is formed on a side of the fixing plate 71 facing the movable plate 73, and the first annular groove 712 is formed on a side of the first vent hole 711 away from the center of the fixing plate 71; a second annular groove 713 is formed in a side of the fixed plate 71 facing the movable plate 73, and the second annular groove 713 is formed in a side of the first vent hole 711 close to the center of the fixed plate 71; the movable plate 73 is provided with a first protrusion 732 corresponding to the first annular groove 712, and the movable plate 73 is provided with a second protrusion 733 corresponding to the first annular groove 712. When the movable plate 73 is attached to the fixed plate 71, the first protrusion 732 is inserted into the first annular groove 712, and the second protrusion 733 is inserted into the second annular groove 713, so that the sterilizing gas in the sterilizing branch 25 is prevented from permeating into the air inlet branch and the air outlet branch 22, the sealing effect is improved, and the safety is high.

Further, a through groove 78 is arranged on the side wall of the sterilizing branch 25, and part of the second push plate 77 passes through the through groove 78 to be connected with the movable plate 73; the side of the annular sliding chute facing the fixing plate 71 is provided with an air storage cavity 79, when the movable plate 73 is attached to the fixing plate 71, part of the second push plate 77 enters the air storage cavity 79, and the air in the air storage cavity 79 is compressed, so that the air in the air storage cavity 79 has a tendency of pushing the second push plate 77 to move back to the fixing plate 71; when the second push plate 77 moves back to the fixed plate 71, the gas in the gas storage cavity 79 provides an initial pushing force to prevent the movable plate 73 and the fixed plate 71 from being separated due to the suction force generated after the movable plate and the fixed plate are attached tightly.

Further, a switch valve 52 is arranged at the connection position of the pipeline 53 and the disinfection branch 25, and the switch valve 52 comprises a fixing hole 521, a fixing sleeve 522, a first valve plate 523, a sealing element 524, a second valve plate 525, a connecting rod 526 and a knob 527; the fixing hole 521 is opened on the housing 21, and an opening of the fixing hole faces a lower plane of the housing 21; the fixing sleeve 522 is arranged in the fixing hole 521, the end part of the fixing sleeve 522 is provided with an air inlet, and the side wall of the fixing sleeve 522 is provided with two air inlets which respectively correspond to the disinfection branch 25; the first valve plate 523 is arranged in the fixed sleeve 522, and two air holes are symmetrically arranged on the first valve plate 523 and are in rotation stopping connection with the fixed sleeve 522; the sealing element 524 is partially clamped into one end of the fixed sleeve 522 to limit the position of the first valve plate 523; the second valve plate 525 is rotatably arranged on one side, opposite to the pipeline 53, of the first valve plate 523, and the second valve plate 525 is provided with two air holes which are matched with the first valve plate 523 to realize the opening and closing of an air inlet at one end, close to the pipeline 53, of the fixed sleeve 522; the connecting piece is rotatably arranged on the shell 21, and one end of the connecting piece is in rotation stopping connection with the first valve plate 523; the knob 527 is connected with one end of the connecting piece, so that the operation of medical staff is facilitated; through setting up ooff valve 52, when breathing module 20 is used for supplying anesthetic gas, close ooff valve 52, prevent that the aseptic gas in pipeline 53 from circulating to disinfection branch road 25 in, with the cooperation of closing component 70, realize duplicate protection, keep apart the anesthetic gas.

Further, the pipeline 53 is connected with the lower end of the fixing hole 521 through a quick coupling 54, and the quick coupling 54 is the prior art, so that the speed of assembling and disassembling the pipeline 53 and the shell 21 is increased; when the quick connector 54 is connected to the fixing hole 521, one end is press-fitted with the sealing member 524 to define the position of the sealing member 524 and form a seal, preventing gas leakage.

Further, the breathing module 20 further includes a carbon dioxide absorber 80 disposed on the housing 21, where the carbon dioxide absorber 80 includes an accommodating tank 81, an air duct 82, an exhaust hole 821, a partition plate 83, an accommodating cavity 811, an air buffer cavity 812, a driving member 84, a helical blade 85, a tapered sleeve 86, a first supporting member 87, and a second supporting member 88; the accommodating tank 81 is detachably arranged on the shell 21, and an air outlet channel is arranged at one end of the accommodating tank 81; the air duct 82 is rotatably arranged in the accommodating tank 81, an air inlet end of the air duct 82 is communicated with the circulation passage of the shell 21, the air inlet end corresponds to the air outlet channel, an inner partition part 822 is arranged in the air duct 82, an air guide cavity 823 is arranged on one side, and a connecting part 824 is arranged on the other side; a plurality of exhaust holes 821 are provided, the exhaust holes 821 are close to the bottom of the accommodating tank 81 and are used for communicating the air guide pipe 82 with the accommodating tank 81; the partition 83 is arranged in the accommodating tank 81, the partition 83 divides the space in the accommodating cavity 811 into an accommodating cavity 811 and a gas buffering cavity 812, the gas buffering cavity 812 corresponds to the exhaust hole 821, and the accommodating cavity 811 is used for storing soda lime for absorbing carbon dioxide; the driving member 84 is a combination of a motor and a speed reducer, is mounted at the bottom of the accommodating tank 81, and is used for driving the air duct 82 to rotate; the spiral blade 85 is arranged around the air duct 82, and conveys the soda lime at the bottom of the accommodating cavity 811 upwards to enable the soda lime to be in a moving state in the accommodating cavity 811, the expiratory gas is fully contacted with the soda lime, and the absorption efficiency of carbon dioxide is improved, the spiral blade 85 is approximately conical in the height direction, so that the soda lime is gradually dispersed in the upward conveying process, and the soda lime is prevented from caking after absorbing moisture in the circulating gas; the helical blade 85 has air permeability and is provided with a plurality of second air leakage holes, the second air leakage holes are arranged along the track of the helical blade 85, the aperture of each second air leakage hole is gradually increased along the direction back to the partition 83, the air discharged by the air discharge holes 821 is gradually raised along the second air leakage holes, and the aperture is gradually increased along the direction back to the partition 83, so that the absorption effect is improved, the smooth circulation of the air is ensured, and the soda lime can be prevented from caking after absorbing the moisture in the circulating air; the conical sleeve 86 is arranged in the accommodating cavity 811, surrounds the spiral blade 85 and divides the accommodating cavity 811 into two parts, and soda lime flows circularly in the two parts; a plurality of first supporting pieces 87 are arranged and connected with one end of the conical sleeve 86 close to the partition plate 83, and one end of each first supporting piece 87 is fixed on the side wall of the containing tank 81; the middle part of the second supporting piece 88 is connected with one side of the conical sleeve 86 far away from the partition plate 83, one end of the second supporting piece 88 is rotatably connected with the air duct 82, and the other end is connected with the side wall of the accommodating tank 81.

Further, the partition 83 is obliquely arranged, and the height of the partition gradually increases from the center to the edge, so that soda lime in the accommodating cavity 811 is gathered to the center, and the conveying efficiency of the helical blade 85 is improved; the partition 83 is provided with a plurality of first air leakage holes, and the aperture of each air leakage hole is gradually reduced from the center to the edge, so that the air leakage in the middle of each air leakage hole is large; a guide plate 813 is arranged in the slow air cavity 812, the section of the guide plate 813 is arc-shaped, and after the gas exhausted from the exhaust hole 821 is guided by the guide plate 813, most of the gas is exhausted through the helical blade 85.

In the specific operation, when the anesthesia machine supplies anesthesia gas to a patient, the gas supply pipe is connected with the connecting pipe 62, the gas supply pipe pushes the rotating piece 68 to rotate, so that the blocking piece 64 is opened, the expiration branch 22 and the inspiration branch 23 are communicated with the gas supply pipe, the breathing module is communicated with the respiratory tract of the patient, the movable piece 73 is attached to the fixed piece 71, and the disinfection branch 25 is isolated from the breathing module; when the anesthesia machine is used for disinfection, the air supply pipe is taken down at the moment, the blocking piece 64 is in a normally closed state, the movable piece 73 is separated from the fixed piece 71, the disinfection branch 25 is communicated with the breathing module, and the disinfection gas enters the breathing module for disinfection.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. An anesthesia machine with disinfection function which is characterized in that:

an anesthesia machine main body (10);

the breathing module (20) is arranged on the anesthesia machine main body (10), the breathing module (20) comprises a shell (21), an expiration branch (22) arranged in the shell (21) and an inspiration branch (23) arranged in the shell (21), the expiration branch (22) and the inspiration branch (23) are both internally provided with one-way valves (24), and when the anesthesia machine works, the expiration branch (22) and the inspiration branch (23) are both connected with an air supply pipe;

the gas supply device is arranged on the anesthesia machine main body (10) and is used for driving the gas in the breathing module (20) to circulate;

the disinfection branch (25) is arranged in the shell (21), one end of the disinfection branch (25) is communicated with the inspiration branch (23), and the other end of the disinfection branch is communicated with the expiration branch (22);

the sterilizing gas generator (515) is arranged on the anesthesia machine main body (10), and the sterilizing gas generator (515) is communicated with the sterilizing branch (25) through a pipeline (53).

2. The anesthesia machine with disinfection function of claim 1, wherein: the air outlet end of the air suction branch (23) and the air inlet end of the air expiration branch (22) are respectively provided with an isolating device (60), and two ends of the disinfection branch (25) are respectively positioned between the isolating device (60) and the one-way valve (24); and the air outlet end of the disinfection branch (25) and the air inlet end of the disinfection branch (25) are respectively provided with a closing component (70).

3. The anesthesia machine with disinfection function of claim 1, wherein: the disinfection branch (25) is designed as an arc-shaped pipeline (53), and a tangent of a center line of the disinfection branch (25) at an air outlet of the disinfection branch (25) and a center line in the exhalation branch (22) form an included angle alpha which is larger than 90 degrees; the tangent of the central line of the disinfection branch (25) at the air inlet of the disinfection branch (25) and the central line in the air suction branch (23) form an included angle beta which is larger than 90 degrees.

4. The anesthesia machine with disinfection function of claim 2, wherein: the isolating device (60) comprises a mounting hole (61) arranged on the shell (21), a connecting pipe (62) arranged in the mounting hole (61), a baffle ring (63) fixedly arranged in the connecting pipe (62), a plurality of blocking pieces (64) rotatably arranged in the connecting pipe (62), a ring piece (65) rotatably arranged in the connecting pipe (62), an arc-shaped groove (66) arranged on the connecting pipe (62), a push rod (67) arranged on the ring piece (65), a rotating piece (68) sleeved on the connecting pipe (62), a guide assembly used for driving the rotating piece (68) to rotate, and a straight groove (610) arranged on the inner wall of the rotating piece (68); the connecting pipe (62) is in rotation stopping connection with the shell (21), and the connecting pipe (62) is communicated with the expiration branch (22) or the inspiration branch (23); one end of the valve plate is hinged with the baffle ring (63), and the edges of the valve plates are matched with each other in shape to close the connecting pipe (62); the annular part (65) is connected with the blocking part (64) through a movable rod (611), one end of the push rod (67) is connected with the rotating part (68), and part of the push rod (67) is slidably arranged in the arc-shaped groove (66); the straight groove (610) is parallel to the axis of the connecting pipe (62), and one end of the push rod (67) can be slidably arranged in the straight groove (610).

5. The anesthesia machine with disinfection function of claim 4, wherein: the guide assembly comprises a first elastic piece (691) sleeved on the connecting pipe (62), a guide groove (692) arranged on the side wall of the mounting hole (61), a guide rod (695) arranged on the side wall of the rotating piece (68), a limit concave part (693) arranged at one end of the guide groove (692) facing the first elastic piece (691), a stepped hole (694) arranged on the side wall of the rotating piece (68), and a blocking part (6951) arranged on the guide rod (695), the sliding mechanism comprises a second elastic piece (696) sleeved on the guide rod (695), an inner hole (6952) arranged in the guide rod (695), a sliding rod (697) arranged in the inner hole (6952) in a sliding mode, a third elastic piece (698) arranged in the inner hole (6952) and one end of the third elastic piece is connected with the sliding rod (697), and a pushing piece (699) arranged on the rotating piece (68) in a sliding mode; one end of the first elastic element (691) is abutted with the rotating element (68), and the other end of the first elastic element is abutted with the hole wall of the mounting hole (61); the depth of the limiting concave part (693) is larger than that of the guide groove (692), the guide rod (695) is slidably arranged in the stepped hole (694), one end of the second elastic part (696) is abutted with the blocking part (6951), and the other end of the second elastic part is abutted with the end part of the stepped hole (694); one end of the pushing piece (699) is contacted with the guide rod (695), and the other end extends out of the rotating piece (68).

6. The anesthesia machine with disinfection function of claim 5, wherein: rotate piece (68) dorsad second elastic component (696) one side is equipped with chamfer portion (681), chamfer portion (681) is located rotate piece (68) and be close to center one side, just chamfer portion (681) coats and is stamped the rubber pad.

7. The anesthesia machine with disinfection function of claim 5, wherein: the closing assembly (70) comprises a fixed plate (71) fixedly arranged in the disinfection branch (25), a plurality of first vent holes (711) arranged on the fixed plate (71), a support rod (72) fixedly arranged on the fixed plate (71), a movable plate (73) slidably arranged on the support rod (72), a plurality of second vent holes (731) arranged on the movable plate (73), a first movable cavity (74) arranged at the end part of the mounting hole (61), a first push plate (75) with one end slidably arranged in the first movable cavity (74), a second movable cavity (76) arranged around the disinfection branch (25), and a second push plate (77) slidably arranged in the second movable cavity (76); the activity piece (73) with bracing piece (72) spline cooperation, second air vent (731) with first air vent (711) crisscross setting, first push pedal (75) with the moving part towards first elastic component (691) one end links to each other, just second activity chamber (76) with first activity chamber (74) communicate through air duct (710) second push pedal (77) one end with activity piece (73) link to each other.

8. The anesthesia machine with disinfection function of claim 7, wherein: a first annular groove (712) is formed in one side, facing the movable sheet (73), of the fixed sheet (71), and a second annular groove (713) is formed in one side, facing the movable sheet (73), of the fixed sheet (71); a first protruding part (732) corresponding to the first annular groove (712) is arranged on the movable sheet (73), and a second protruding part (733) corresponding to the first annular groove (712) is arranged on the movable sheet (73); the first annular groove (712) is arranged on one side of the first vent hole (711) far away from the center of the fixing piece (71), and the second annular groove (713) is arranged on one side of the first vent hole (711) near the center of the fixing piece (71); a through groove (78) is formed in the side wall of the disinfection branch (25), and part of the second push plate (77) penetrates through the through groove (78) to be connected with the movable plate (73); the annular sliding groove faces one side of the fixing piece (71) and is provided with a gas storage cavity (79), and when the movable piece (73) is attached to the fixing piece (71), the second push plate (77) partially enters the gas storage cavity (79).

9. The anesthesia machine with disinfection function of claim 4, wherein: the breathing module (20) further comprises a carbon dioxide absorber (80) arranged on the shell (21), wherein the carbon dioxide absorber (80) comprises an accommodating tank (81) detachably arranged on the shell (21), an air guide pipe (82) rotatably arranged in the accommodating tank (81), a plurality of exhaust holes (821) formed in the side wall of the air guide pipe (82), a partition plate (83) arranged in the accommodating cavity (811), an accommodating cavity (811) arranged on one side of the partition plate (83) and used for storing soda lime, and a slow air cavity (812) arranged on the other side of the partition plate (83); an inner partition part (822) is arranged in the air duct (82), an air duct cavity (823) is arranged on one side, and a connecting part (824) is arranged on the other side; a plurality of first air leakage holes are formed in the partition plate (83), and the aperture of each air leakage hole is gradually reduced from the center to the edge; the slow air cavity (812) corresponds to the exhaust hole (821).

10. The anesthesia machine with disinfection function of claim 9, wherein: the carbon dioxide absorber (80) further comprises a driving piece (84) for driving the air guide pipe (82) to rotate, a helical blade (85) arranged around the air guide pipe (82), a conical sleeve (86) arranged in the accommodating cavity (811), a guide plate (813) arranged in the slow air cavity (812), a first supporting piece (87) connected with the conical sleeve (86), and a second supporting piece (88) connected with the upper end of the conical sleeve (86); the output shaft of the driving part (84) is connected with the connecting part (824), a plurality of second air leakage holes are formed in the spiral blade (85), the second air leakage holes are formed along the track of the spiral blade (85), and the hole diameter of each second air leakage hole is gradually increased along the direction back to the partition plate (83); the conical sleeve (86) surrounds the helical blade (85), the first supporting piece (87) is connected with the side wall of the containing tank (81), the second supporting piece (88) is rotatably connected with the air guide pipe (82), and one end of the second supporting piece is fixed to the containing tank (81).