CN112156314B - Adjustable frequency control valve of breathing machine - Google Patents

Adjustable frequency control valve of breathing machine Download PDF

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Publication number
CN112156314B
CN112156314B CN202011096032.8A CN202011096032A CN112156314B CN 112156314 B CN112156314 B CN 112156314B CN 202011096032 A CN202011096032 A CN 202011096032A CN 112156314 B CN112156314 B CN 112156314B
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piston
shell
periphery
fixedly connected
rod
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CN112156314A (en
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宋荣
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Jiaxing Puruihua Medical Technology Co.,Ltd.
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Wenzhou Polytechnic
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Emergency Medicine (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

The utility model provides a frequency control valve of adjustable breathing machine, which comprises a housin, install the outlet duct in the casing, the intake pipe, be equipped with the toper stopper in the casing, the toper stopper below is equipped with the reciprocating screw pair, the lower extreme of the nut connection spring lever of the reciprocating screw pair, the upper end and the toper stopper connection of spring lever, the upper end of the telescopic shaft is connected to the lower extreme of the screw of the reciprocating screw pair, the lower extreme and the casing of telescopic shaft are connected, casing one side installation drive arrangement, the nut and the casing of the reciprocating screw pair pass through sharp slider slide rail mechanism sliding connection, the casing opposite side has adjusting device, the piston cylinder is connected to the spring lever, install first piston in the piston cylinder, install the violently pipe in the casing lower part, install the piston tube in the reservation groove of casing, install the second piston in the piston tube, install two third pistons in the violently pipe. The invention uses the gas buffer chamber, avoids the damage to the lung impact caused by the excessive gas pressure in the regulating valve, and can flexibly regulate the time ratio of inspiration and expiration through a mechanical structure, thereby meeting the market demand.

Description

Adjustable frequency control valve of breathing machine
Technical Field
The invention belongs to the field of valve devices, and particularly relates to a frequency adjusting valve of an adjustable breathing machine.
Background
The breathing machine is a vital medical device which can prevent and treat respiratory failure, reduce complications, save and prolong the life of patients. The patent CN110064115A issued by the chinese patent office 2019.07.30, a frequency adjusting valve for a breathing machine, changes the air pressure value when the air flows through by adjusting the flow rate of the valve, so as to match the breathing of a user, but when the output flow rate of the valve is smaller, the air gathers in the valve to generate high-pressure air, and when the output flow rate is increased, the air flows out quickly, so that the air is easy to impact the lung of the user, the lung of the user firstly inhales quickly and then inhales slowly, the inspiration time is shorter, the time ratio of inspiration to expiration of a normal person is one to two, the time of inspiration of the user is prolonged, the time ratio of inspiration to expiration is increased, the ratio is between 0.5 and 1, which is beneficial to the uniform distribution of oxygen in the lung, which is beneficial to atomization treatment, and the extension of expiration time is beneficial to the rebound compression of the lung, and the existing ratio of controlling the breathing time is generally controlled by electronic devices, which has poor reliability, is easy to damage and difficult to maintain, so that the frequency adjusting valve of the adjustable breathing machine of the invention has a pure mechanical structure.
Disclosure of Invention
The invention provides a frequency regulating valve of an adjustable respirator, which is used for solving the defects in the prior art.
The invention is realized by the following technical scheme:
the utility model provides a frequency control valve of adjustable breathing machine, which comprises a housin, the preformed hole at both ends about the casing is internal fixed mounting outlet duct in proper order, the intake pipe, be equipped with the toper stopper that is located the outlet duct under in the casing, the below of toper stopper is equipped with the reciprocal screw pair, the lower extreme of the nut fixed connection spring beam of reciprocal screw pair, the upper end and the toper stopper fixed connection of spring beam, the upper end of the screw of reciprocal screw pair fixed connection telescopic shaft, the lower extreme and the casing swivelling joint of telescopic shaft, one side fixed mounting of casing can drive telescopic shaft pivoted drive arrangement, the nut and the casing of reciprocal screw pair pass through linear slide rail mechanism sliding fit connection, the opposite side of casing is equipped with the adjusting device that can make telescopic shaft upper end adjust from top to bottom, the side of the fixed connection piston cylinder of spring beam, the first piston of cooperation installation in the piston cylinder, the top side fixed connection piston rod's of first piston, the upper end fixed connection pin middle part of piston rod, the one end and the upper end fixed connection of spring beam, the lower part internal fixed mounting cross tube of casing, the interior fixed mounting piston tube of the preformed groove of casing left and right sides, the interior fixed mounting piston tube of the interior end and the casing of casing is the piston tube respectively, the interior end and the piston tube of piston tube are connected in the second through the piston tube is connected with the piston tube's the second cross tube, the piston tube is connected through the second through the inside the piston tube, the second cross tube is connected with the piston tube, the piston tube is connected in the second through the second side of the piston tube, the piston tube is fixed with the piston tube, the piston tube is connected in the interior and the piston tube is connected with the piston tube.
The driving device comprises a driving motor, the driving motor is fixedly arranged on the left side of the shell, a rotating shaft of the driving motor penetrates through a reserved hole on the left side of the shell to be located in the shell, a first bevel gear is fixedly arranged at the right end of the rotating shaft of the driving motor, a second bevel gear is fixedly arranged at the lower end of the periphery of the telescopic shaft, and the second bevel gear is meshed and matched with the first bevel gear.
The adjustable breathing machine frequency adjusting valve comprises a worm which is rotatably arranged in a reserved hole on the right side of a shell through a sealing bearing, a worm wheel is arranged on one side of the worm in a meshed fit mode, the middle of the top side of the worm wheel is fixedly connected with the lower end of a screw rod, the screw rod is rotatably connected with the shell through the bearing, a first screw nut is arranged on the periphery of the screw rod in a threaded fit mode, the periphery of the upper end of a telescopic shaft is rotatably connected with the inner periphery of a moving ring through the bearing, and the moving ring is fixedly connected with the first screw nut through a fourth connecting rod.
According to the frequency adjusting valve of the adjustable breathing machine, the through hole is formed in the left side of the top side of the shell, the upper portion of the periphery of the connecting bolt is rotated in the through hole through the left side in a sealing mode, the lower portion of the periphery of the bolt is provided with the inner threaded pipe in a threaded mode, the inner threaded pipe is fixedly connected with one end of the telescopic rod, the other end of the telescopic rod is fixedly connected with the shell, and the lower end of the inner threaded pipe is in contact with the top side of the stop lever.
The second piston comprises a piston column, a piston ring is sleeved on the periphery of the piston column, the inner periphery of the piston ring is in airtight sliding contact fit with the periphery of the piston column, the periphery of the piston ring is in sliding contact fit with the inner periphery of a piston tube, the inner end of the piston column is fixedly connected with the outer end of a connecting rod and the outer end of a spring, the outer end of the piston column rotates the inner end of a connecting screw rod through a bearing, a second screw nut is mounted on the outer periphery of the screw rod in a threaded fit manner, and the second screw nut is fixedly connected with the piston ring through a fifth connecting rod.
The adjustable breathing machine frequency adjusting valve is characterized in that the exhaust hole is formed in the bottom side of the piston cylinder, the inner periphery of the exhaust hole is fixedly connected with the upper end of the outer periphery of the vertical pipe, the lower end of the vertical pipe is fixedly connected with the upper end of the hose, the upper end of the hose is communicated with the piston cylinder through the vertical pipe and the exhaust hole, the one-way valve is arranged above the vertical pipe, the outer periphery of the one-way valve can be in airtight sliding contact fit with the inner periphery of the vertical pipe, and the one-way valve is fixedly connected with the first piston through the vertical rod.
The invention has the advantages that: the invention has simple structure and ingenious conception, the gas buffer chamber is used to avoid the damage to the lung impact caused by the excessive gas pressure in the regulating valve, and the time ratio of inspiration and expiration can be flexibly regulated through a mechanical structure, thereby meeting the market demand and being suitable for popularization. When the invention is used, firstly, the air supply source is connected with the lower port of the air inlet pipe, the outer end of the air outlet pipe is connected with the external pipeline, and the air of the air supply source can be supplied to a user through the air inlet pipe, the shell, the air outlet pipe and the external pipeline; then the driving device is electrified, the driving device drives the telescopic shaft and the screw rod of the reciprocating screw rod pair to rotate, the nut of the reciprocating screw rod pair drives the spring rod and the conical piston to move up and down, when the upper end of the conical piston stretches into the lower end of the air outlet pipe, the air outlet amount of the air outlet pipe gradually decreases until the periphery of the conical piston is in contact with the lower end of the air outlet pipe, at the moment, the air outlet amount of the air outlet pipe is minimum, a patient begins to exhale, at the moment, the lower end of the spring rod continues to move upwards, the spring rod begins to be compressed, the first piston moves downwards along the piston cylinder, air in the piston cylinder enters the transverse pipe through the hose, the third piston moves back along the transverse pipe, the third piston drives the second piston to move back through the connecting rod, the spring is stretched, and at the moment, the volume of the shell is increased, and high-pressure impact of air in the shell is prevented from being accumulated in the lung of a user; when the nut of the reciprocating screw pair drives the spring rod and the conical plug to move downwards, the spring rod stretches elastically to reset, the first piston moves upwards along the piston cylinder, gas in the transverse tube flows back into the piston cylinder through the hose until the conical plug is pulled out of the lower end of the gas outlet tube, the flow rate of the gas outlet tube is maximum, at the moment, the patient inhales, the continuous positive pressure gas flow during inhalation is greater than the inhalation gas flow, so that the inhalation of the patient is labor-saving, and the second piston moves oppositely to reset under the action of the elastic tension of the spring, so that the gas prestored in the piston tube flows back into the shell; the upper end of the telescopic shaft can be adjusted up and down through the adjusting device, when the upper end of the telescopic shaft moves upwards, the conical plug can be matched with the lower end of the air outlet pipe in advance, so that the time of expiration is increased, the time of inspiration is reduced, and conversely, the time of inspiration can be increased and the time of expiration is reduced after the upper end of the telescopic shaft is adjusted downwards.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention; FIG. 2 is an enlarged view of part of I of FIG. 1; FIG. 3 is an enlarged view of part II of FIG. 1; fig. 4 is an enlarged view of a portion of iii of fig. 1.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The utility model provides an adjustable breathing machine's frequency control valve, as shown in the drawing, including casing 1, casing 1 upper and lower both ends preformed hole is internal fixed mounting outlet duct, the intake pipe, the outlet duct communicates with casing 1 inside respectively, be equipped with the toper stopper 2 that is located the outlet duct directly below in the casing 1, the periphery of toper stopper 2 can with the airtight contact cooperation of the inner periphery of outlet duct, the below of toper stopper 2 is equipped with reciprocal screw pair 3, reciprocal screw pair 3's nut fixed connection spring bar 4's lower extreme, spring bar 4's upper end and toper stopper 2 fixed connection, reciprocal screw pair 3's lower extreme fixed connection telescopic shaft 5's upper end, telescopic shaft 5's lower extreme and casing 1 rotate to be connected, telescopic shaft 5's lower extreme passes through the top side of bearing rotation connection backup pad 6, backup pad 6 and casing 1 pass through first connecting rod 7 fixed connection, one side of the shell 1 is fixedly provided with a driving device capable of driving the telescopic shaft 5 to rotate, a nut of the reciprocating screw pair 3 is connected with the shell 1 through a linear slide block and slide rail mechanism 9 in a sliding fit manner, one side of the inner wall of the shell 1 is fixedly connected with a slide rail of the linear slide block and slide rail mechanism 9, a slide block of the linear slide block and slide rail mechanism 9 is fixedly connected with one end of a second connecting rod 10, the other end of the second connecting rod 10 is fixedly connected with the nut of the reciprocating screw pair 3, the other side of the shell 1 is provided with an adjusting device capable of enabling the upper end of the telescopic shaft 5 to be adjusted up and down, the lower end of the spring rod 4 is fixedly connected with the side surface of the piston cylinder 11, a first piston 12 is matched and installed in the piston cylinder 11, the top side of the first piston 12 is fixedly connected with the lower end of a piston rod 13, the upper end of the piston rod 13 is fixedly connected with the middle part of a stop rod 14, one end of the stop rod 14 is fixedly connected with the upper end of the spring rod 4, a transverse tube 15 is fixedly installed in the lower part of the shell 1, the horizontal tube 15 is fixedly connected with the shell 1 through a third connecting rod 16, piston tubes 17 are fixedly installed in reserved grooves on the left side and the right side of the shell 1 respectively, the inner ends of the piston tubes 17 are respectively communicated with the inside of the shell 1, second pistons 18 are installed in the piston tubes 17 in a matched mode, two third pistons 19 distributed left and right are movably installed in the horizontal tube 15, the outer sides of the third pistons 19 are respectively fixedly connected with the corresponding second pistons 18 through connecting rods 20, the second pistons 18 are connected with the horizontal tube 15 through springs 21 sleeved on the peripheries of the connecting rods 20, the middle parts of the horizontal tube 15 are communicated and connected with the bottoms of the piston cylinders 11 through hoses 22, and the insides of the horizontal tube 15 are communicated with the insides of the piston cylinders 11 through the hoses 22. The invention has simple structure and ingenious conception, the gas buffer chamber is used to avoid the damage to the lung impact caused by the excessive gas pressure in the regulating valve, and the time ratio of inspiration and expiration can be flexibly regulated through a mechanical structure, thereby meeting the market demand and being suitable for popularization. When the invention is used, firstly, the air supply source is connected with the lower port of the air inlet pipe, the outer end of the air outlet pipe is connected with the external pipeline, and the air of the air supply source can be supplied to a user through the air inlet pipe, the shell 1, the air outlet pipe and the external pipeline; then the driving device is electrified, the driving device drives the telescopic shaft 5 and the screw rod of the reciprocating screw rod pair 3 to rotate, the nut of the reciprocating screw rod pair 3 drives the spring rod 4 and the conical plug 2 to move up and down, when the upper end of the conical plug 2 stretches into the lower end of the air outlet pipe, the air outlet amount of the air outlet pipe gradually decreases until the periphery of the conical plug 2 is in contact with the lower end of the air outlet pipe, the air outlet amount of the air outlet pipe is minimum at the moment, a patient starts to exhale, at the moment, the lower end of the spring rod 4 continues to move upwards, the spring rod 4 starts to be compressed, the first piston 12 moves downwards along the piston cylinder 11, air in the piston cylinder 11 enters the transverse pipe 15 through the hose 22, the third piston 19 moves back along the transverse pipe 15, the third piston 19 drives the second piston 18 to move back through the connecting rod 20, the spring 21 is stretched, and the volume of the shell 1 is increased at the moment, and high-pressure impact of air in the shell 1 to the lung of the user is avoided; when the nut of the reciprocating screw pair 3 drives the spring rod 4 and the conical plug 2 to move downwards, the spring rod 4 stretches elastically to reset, the first piston 12 moves upwards along the piston cylinder 11, gas in the transverse tube 15 flows back into the piston cylinder 11 through the hose 22 until the conical plug 2 is pulled out of the lower end of the gas outlet tube, at the moment, the flow of the gas outlet tube is maximum, at the moment, the patient inhales, the continuous positive pressure gas flow is greater than the inhaling gas flow during inhalation, so that the inhalation of the patient is labor-saving, and the second piston 19 moves in opposite directions to reset under the action of the elastic tension of the spring 21, so that the gas prestored in the piston tube 17 flows back into the shell 1; the upper end of the telescopic shaft 5 can be adjusted up and down through the adjusting device, when the upper end of the telescopic shaft 5 moves upwards, the conical plug 2 can be matched with the lower end contact of the air outlet pipe in advance, so that the time of expiration is increased, the time of inspiration is reduced, and conversely, the time of inspiration can be increased and the time of expiration is reduced after the upper end of the telescopic shaft 5 is adjusted downwards.
Specifically, as shown in the figure, the driving device in this embodiment includes a driving motor 80, the driving motor 80 is fixedly mounted on the left side of the housing 1, a rotating shaft of the driving motor 80 passes through a reserved hole on the left side of the housing 1 and is located in the housing 1, the outer periphery of the rotating shaft of the driving motor 80 is rotationally connected with the inner periphery of the reserved hole through a sealing bearing, a first bevel gear 81 is fixedly mounted at the right end of the rotating shaft of the driving motor 80, a second bevel gear 82 is fixedly mounted at the lower end of the outer periphery of the telescopic shaft 5, and the second bevel gear 82 is meshed and matched with the first bevel gear 81. When the driving motor 80 is electrified and rotates, the rotating shaft of the driving motor 80 drives the telescopic shaft 5 to rotate through the first bevel gear 81 and the second bevel gear 82, and the time of up-down reciprocation of the nut of the reciprocating screw pair 3 is controlled by controlling the rotation speed of the driving motor 80, so that the total time of one breath and one inhalation can be controlled, and the adjustment of one breath time is realized.
Specifically, as shown in the figure, the adjusting device in this embodiment includes a worm 30 rotatably mounted in a preformed hole on the right side of the housing 1 through a sealed bearing, a worm wheel 31 is engaged and matched on one side of the worm 30, the middle of the top side of the worm wheel 31 is fixedly connected with the lower end of a screw rod 32, the screw rod 32 is rotatably connected with the housing 1 through a bearing, a first screw 33 is mounted on the outer periphery of the screw rod 32 in a threaded and matched manner, the outer periphery of the upper end of the telescopic shaft 5 is rotatably connected with the inner periphery of a moving ring 34 through a bearing, and the moving ring 34 is fixedly connected with the first screw 33 through a fourth connecting rod 35. The right end of the worm 30 is rotated, so that the worm 30 drives the worm wheel 31 and the screw rod 32 to rotate, the first screw 33 can move up and down along the screw rod 32, the first screw 33 drives the moving ring 34 to move up and down through the fourth connecting rod 35, the moving ring 34 drives the upper end of the telescopic shaft 5 to move up and down, the upper end of the telescopic shaft 5 is adjusted up and down, and the position of the upper end of the telescopic shaft 5 is self-locked and fixed by utilizing self-locking of the worm wheel and the screw rod.
Further, as shown in the figure, the left side of the top side of the housing 1 in this embodiment is provided with a through hole 40, the upper part of the outer periphery of the connecting bolt 41 is turned in the through hole 40 by sealing the left side, the lower part of the outer periphery of the bolt 41 is provided with an internal thread pipe 42, the internal thread pipe 42 is fixedly connected with one end of a telescopic rod 43, the other end of the telescopic rod 43 is fixedly connected with the housing 1, and the lower end of the internal thread pipe 42 is in contact fit with the top side of the stop lever 14. The upper end of the bolt 41 is screwed, the internal thread pipe 42 moves up and down, the telescopic rod 43 is driven to stretch out and draw back, the internal thread pipe 42 moves up and down, when the internal thread pipe 42 is adjusted upwards from changing the limit position of the stop lever 14, the distance that the upper end of the conical plug 2 stretches into the air outlet pipe is increased, the air outlet amount of the air outlet pipe during expiration is reduced, otherwise, the internal thread pipe 42 is adjusted downwards, and the air outlet amount of the air outlet pipe during expiration can be increased.
Further, as shown in the figure, the second piston 18 in this embodiment includes a piston post 50, a piston ring 51 is sleeved on the outer periphery of the piston post 50, the inner periphery of the piston ring 51 is in airtight sliding contact fit with the outer periphery of the piston post 50, the outer periphery of the piston ring 51 is in sliding contact fit with the inner periphery of the piston tube 17, the inner end of the piston post 50 is fixedly connected with the outer end of the connecting rod 20 and the outer end of the spring 21, the outer end of the piston post 50 is rotatably connected with the inner end of a screw 52 through a bearing, a second nut 53 is mounted on the outer periphery of the screw 52 in a threaded fit manner, and the second nut 53 is fixedly connected with the piston ring 51 through a fifth connecting rod 54. The screw rod 52 is screwed, the second nut 53 drives the piston ring 51 to move left and right along the piston column 50 through the fifth connecting rod 54, so that the sectional area of the inner end of the second piston 18 can be adjusted, and when the piston ring 51 moves outwards relative to the piston column 50, the volume of pre-stored gas at the inner end of the piston tube 17 can be increased, so that the crowd with different breathing amounts can be satisfied.
Further, as shown in the figure, the bottom side of the piston cylinder 11 in this embodiment is provided with the exhaust hole 60, the inner periphery of the exhaust hole 60 is fixedly connected with the upper end of the outer periphery of the standpipe 61, the lower end of the standpipe 61 is fixedly connected with the upper end of the hose 22, the upper end of the hose 22 is communicated with the piston cylinder 11 through the standpipe 61 and the exhaust hole 60, a check valve 62 is arranged above the standpipe 61, the outer periphery of the check valve 62 can be in airtight sliding contact with the inner periphery of the standpipe 61, and the check valve 62 is fixedly connected with the first piston 12 through a vertical rod 63. After the check valve 62 is inserted into the vertical pipe 61, the gas in the piston cylinder 11 continuously moves downwards along the piston cylinder 11 along with the first piston 12, the gas in the piston cylinder 11 enters the vertical pipe 61 and the hose 22 through the check valve 62, when the piston cylinder 11 moves upwards along the first piston 12, the check valve 62 is positioned in the vertical pipe 61, the gas in the transverse pipe 15 is prevented from flowing back into the piston cylinder 11 immediately, and when the check valve 62 is pulled out from the vertical pipe 61, the gas in the transverse pipe 15 can flow back into the piston cylinder 11.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. An adjustable ventilator's frequency control valve, its characterized in that: the device comprises a shell (1), wherein an air outlet pipe and an air inlet pipe are sequentially and fixedly arranged in reserved holes at the upper end and the lower end of the shell (1), a conical plug (2) positioned under the air outlet pipe is arranged in the shell (1), a reciprocating screw rod pair (3) is arranged under the conical plug (2), a nut of the reciprocating screw rod pair (3) is fixedly connected with the lower end of a spring rod (4), the upper end of the spring rod (4) is fixedly connected with the conical plug (2), the lower end of a screw rod of the reciprocating screw rod pair (3) is fixedly connected with the upper end of a telescopic shaft (5), the lower end of the telescopic shaft (5) is rotationally connected with the shell (1), one side of the shell (1) is fixedly provided with a driving device capable of driving the telescopic shaft (5) to rotate, a nut of the reciprocating screw rod pair (3) is connected with the shell (1) in a sliding fit manner through a linear slide rail mechanism (9), the other side of the shell (1) is provided with an adjusting device capable of enabling the upper end of the telescopic shaft (5) to be adjusted up and down, the lower end of the spring rod (4) is fixedly connected with the side of a piston cylinder (11), the lower end of the piston rod (11) is fixedly connected with the upper end of the piston rod (12), one side of the piston rod (13) is fixedly connected with the upper end of the piston rod (14) of the piston rod (13), a horizontal pipe (15) is fixedly arranged in the lower part of the shell (1), piston pipes (17) are fixedly arranged in reserved grooves on the left side and the right side of the shell (1), the inner ends of the piston pipes (17) are respectively communicated with the inside of the shell (1), a second piston (18) is arranged in the piston pipes (17) in a matched mode, two third pistons (19) which are distributed left and right are movably arranged in the horizontal pipe (15), the outer sides of the third pistons (19) are fixedly connected with the corresponding second pistons (18) through connecting rods (20) respectively, the second pistons (18) are connected with the horizontal pipe (15) through springs (21) sleeved on the peripheries of the connecting rods (20), and the middle parts of the horizontal pipe (15) are connected with the bottoms of the piston cylinders (11) in a communicating mode through hoses (22);
when the upper end of the telescopic shaft moves upwards, the conical plug can be contacted and matched with the lower end of the air outlet pipe in advance.
2. The adjustable ventilator frequency adjustment valve of claim 1, wherein: the driving device comprises a driving motor (80), the driving motor (80) is fixedly arranged on the left side of the shell (1), a rotating shaft of the driving motor (80) penetrates through a reserved hole on the left side of the shell (1) and is located in the shell (1), a first bevel gear (81) is fixedly arranged at the right end of the rotating shaft of the driving motor (80), a second bevel gear (82) is fixedly arranged at the lower end of the periphery of the telescopic shaft (5), and the second bevel gear (82) is meshed and matched with the first bevel gear (81).
3. The adjustable ventilator frequency adjustment valve of claim 1, wherein: the adjusting device comprises a worm (30) which is rotatably arranged in a reserved hole on the right side of a shell (1) through a sealing bearing, one side of the worm (30) is in meshed fit with a worm wheel (31), the middle of the top side of the worm wheel (31) is fixedly connected with the lower end of a screw rod (32), the screw rod (32) is rotatably connected with the shell (1) through the bearing, a first screw nut (33) is mounted on the periphery of the screw rod (32) in a threaded fit manner, the periphery of the upper end of a telescopic shaft (5) is rotatably connected with the inner periphery of a movable ring (34) through the bearing, and the movable ring (34) is fixedly connected with the first screw nut (33) through a fourth connecting rod (35).
4. The adjustable ventilator frequency adjustment valve of claim 1, wherein: the left side of casing (1) top side offer through-hole (40), through the upper portion of sealed left side rotation connecting bolt (41) periphery in through-hole (40), the lower part screw thread installation internal thread pipe (42) of bolt (41) periphery, the one end of internal thread pipe (42) fixed connection telescopic link (43), the other end and casing (1) fixed connection of telescopic link (43), the lower extreme of internal thread pipe (42) and the top side contact cooperation of pin (14).
5. The adjustable ventilator frequency adjustment valve of claim 1, wherein: the second piston (18) comprises a piston column (50), a piston ring (51) is sleeved on the periphery of the piston column (50), the inner periphery of the piston ring (51) is in airtight sliding contact fit with the periphery of the piston column (50), the periphery of the piston ring (51) is in sliding contact fit with the inner periphery of a piston tube (17), the inner end of the piston column (50) is fixedly connected with the outer end of a connecting rod (20) and the outer end of a spring (21), the outer end of the piston column (50) rotates through a bearing to connect with the inner end of a screw rod (52), a second screw nut (53) is mounted on the outer periphery of the screw rod (52) in a threaded fit mode, and the second screw nut (53) is fixedly connected with the piston ring (51) through a fifth connecting rod (54).
6. The adjustable ventilator frequency adjustment valve of claim 1, wherein: the bottom side of piston cylinder (11) set up exhaust hole (60), the upper end of the inner periphery fixed connection standpipe (61) periphery of exhaust hole (60), the lower extreme of standpipe (61) and the upper end fixed connection of hose (22), the upper end of hose (22) is linked together through standpipe (61), exhaust hole (60) with piston cylinder (11), the top of standpipe (61) is equipped with check valve (62), the periphery of check valve (62) can with the airtight sliding contact cooperation of the inner periphery of standpipe (61), check valve (62) and first piston (12) pass through montant (63) fixed connection.
CN202011096032.8A 2020-10-14 2020-10-14 Adjustable frequency control valve of breathing machine Active CN112156314B (en)

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US8347883B2 (en) * 2008-11-17 2013-01-08 Bird F M Manual controlled bi-phasic intrapulmonary percussive ventilation and methods
CN203634619U (en) * 2013-12-03 2014-06-11 上海力申科学仪器有限公司 Air flow control device with buffer structure
CN110170098A (en) * 2019-05-08 2019-08-27 肖锦亮 A kind of anesthetic concentration adjustable apparatus
CN210078519U (en) * 2019-05-20 2020-02-18 吉林大学 Auxiliary respirator for thoracic surgery nursing

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Denomination of invention: A frequency regulating valve for an adjustable ventilator

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