CN110464961B

CN110464961B - Anti-misoperation air flow passage switching valve and oxygen inhaler thereof

Info

Publication number: CN110464961B
Application number: CN201910785793.5A
Authority: CN
Inventors: 谢燕娜
Original assignee: First Affiliated Hospital of Shantou University Medical College
Current assignee: First Affiliated Hospital of Shantou University Medical College
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2021-09-03
Anticipated expiration: 2039-08-23
Also published as: CN110464961A

Abstract

An anti-misoperation air flow passage switching valve comprises a valve body with a first passage and a second passage, wherein the valve body is provided with a passage switching mechanism and a first passage locking mechanism and a second passage locking mechanism, and the passage switching mechanism can switch the first passage and the second passage when external magnetic parts of the valve body unlock the first magnetic locking piece and the second magnetic locking piece of the first passage locking mechanism and the second passage locking mechanism; after the passage switching mechanism selects the first passage or the second passage, the external magnetic member is removed and the first passage locking mechanism and/or the second passage locking mechanism and the passage switching mechanism are locked with each other to form a passage selected from the first passage or the second passage. The airflow can be switched to quantitative airflow or can be adjusted to two paths by switching the airflow path, the quantitative airflow path can be kept after the setting of an operator, and other people are difficult to adjust the airflow flow by themselves, so that misoperation can be effectively avoided; the oxygen inhalation device is suitable for being used as a passage switching valve of an oxygen inhalation device, and can prevent the occurrence of complications such as oxygen poisoning caused by excessive oxygen inhalation due to misoperation of a patient.

Description

Anti-misoperation air flow passage switching valve and oxygen inhaler thereof

Technical Field

The invention relates to the field of medical instruments, in particular to an anti-misoperation air flow passage switching valve and an oxygen inhaler with the switching valve.

Background

The oxygen inhalation is a method for relieving the hypoxia of a patient, which is commonly used in clinic, and the proper amount of oxygen inhalation is beneficial to improving the arterial oxygen partial pressure and the oxygen saturation level and promoting the metabolism, thereby being one of important methods for the adjuvant therapy of various diseases. The current mainstream oxygen supply system of the hospital is a central oxygen supply system, an oxygen supply outlet arranged at a sickbed terminal is transmitted by constant oxygen supply pressure and oxygen supply amount, and the oxygen supply outlet arranged at the sickbed terminal needs to maintain higher-level oxygen supply amount in order to respond to various medical conditions; when the common patients with mild anoxia and II type respiratory failure are subjected to daily medical care, the oxygen supply amount is required to be adjusted within a reasonable range, preferably 1-2L/min, and is properly increased or decreased within the range according to the age and the health condition of the patients; in some emergency situations, if the oxygen supply needs to be performed for the patients with severe anoxia urgently, the flow rate of the oxygen supply needs to be adjusted rapidly within a short time to be within the range of 4-6L/min.

In order to control the oxygen supply pressure and oxygen supply amount at the oxygen supply outlet, an oxygen inhaler with a humidifying bottle is usually connected to the oxygen supply outlet, so as to achieve the effects of oxygen flow regulation and oxygen airflow humidification; moreover, the regulating valve of the oxygen inhalator is not provided with a device for preventing false touch, and the regulating process is relatively convenient. This allows the patient to adjust the oxygen flow freely and conveniently while facilitating the operation of the medical personnel.

However, because of the limitation of the knowledge of the patient, the patient often mistakenly thinks that the improvement of the inhalation volume of the oxygen is more beneficial to the relief and the rehabilitation of the anoxia symptom, but does not follow the medical advice and blindly and unlimitedly inhale the oxygen; after a long time of inhalation of high concentration of oxygen, complications such as suppression of respiration, oxygen poisoning, sternal discomfort and pain, exacerbation during inhalation, cough, dyspnea, etc. appear, but physical health is impaired.

Disclosure of Invention

The invention aims to provide an anti-misoperation air flow passage switching valve which can switch air flow into a fixed amount of air flow or into two adjustable air flow passages by switching the air flow passage, can keep the fixed amount of air flow passage after being set by an operator, is difficult for others to adjust the air flow by themselves and can effectively avoid misoperation.

In order to achieve the purpose, the invention is implemented by adopting the following technical means:

an anti-misoperation air flow passage switching valve comprises a valve body with a first passage and a second passage, wherein the valve body is provided with a passage switching mechanism and a first passage locking mechanism and a second passage locking mechanism, and the passage switching mechanism can switch the first passage and the second passage when the first magnetic locking piece and the second magnetic locking piece of the first passage locking mechanism and the second passage locking mechanism are unlocked through an external magnetic piece; after the passage switching mechanism selects the first passage or the second passage, the external magnetic member is removed and the first passage locking mechanism and/or the second passage locking mechanism and the passage switching mechanism are locked with each other to form a passage selected from the first passage or the second passage.

Furthermore, the passage switching mechanism is provided with a passage airtight stopper for separating the first passage from the second passage, and the passage switching mechanism drives the passage airtight stopper to move along a passage switching channel in the valve body through the operating rod body until a passage selected from the first passage and the second passage is formed. Preferably, the operating rod body is formed by pressing and locking the first rod body and the second rod body relative to the passage airtight stopper.

Furthermore, the operating rod body extends outwards towards the side wall of the valve body to form a switching swing rod, and a switching port airtight stopper for hermetically sealing the switching port of the valve body is arranged in the middle section of the switching swing rod.

Furthermore, two ends of the operating rod body are correspondingly separated by the first annular arc-shaped cutting groove and the second annular arc-shaped cutting groove to form a first rod head and a second rod head; the first and second passage locking mechanisms are symmetrically arranged on the left and right sides of the valve body, and each passage locking mechanism comprises a locking mechanism body with a sliding cavity; the first rod head pair extends into the first sliding cavity until the first annular arc-shaped cutting groove is positioned in the first sliding cavity, and the first annular arc-shaped cutting groove is locked by the first magnetic locking piece in the first sliding cavity; the second rod head pair extends into the second sliding cavity until the second annular arc-shaped cutting groove is positioned in the second sliding cavity, and the second annular arc-shaped cutting groove is locked by a second magnetic locking piece in the second sliding cavity.

Furthermore, when the first rod head can correspondingly extend into the deepest part of the first sliding cavity, the inner edge of the first annular arc-shaped cutting groove is flush with the inner wall of the opening of the first sliding cavity; when the second pole head can correspondingly stretch into the deepest part of the second sliding cavity, the inner edge of the second annular arc-shaped cutting groove is flush with the inner wall of the opening of the second sliding cavity, and the two ends of the operating pole body are correspondingly erected on the openings of the first sliding cavity and the second sliding cavity.

Further, the first annular arc cutting groove comprises a first inner annular arc cutting groove and a first outer annular arc cutting groove, and the second annular arc cutting groove comprises a second inner annular arc cutting groove and a second outer annular arc cutting groove; when the first rod head correspondingly extends into the deepest part of the first sliding cavity, the inner edge of the first inner annular arc-shaped cutting groove is flush with the inner wall of the opening of the first sliding cavity, and the inner edge of the second outer annular arc-shaped cutting groove is flush with the inner wall of the opening of the second sliding cavity; when the second pole head correspondingly stretches into the deepest part of the second sliding cavity, the inner edge of the second inner annular arc-shaped groove is flush with the inner wall of the opening of the second sliding cavity, and the inner edge of the first outer annular arc-shaped groove is flush with the inner wall of the opening of the first sliding cavity.

Further, the first and second magnetic locking members respectively comprise a first and second spring, a first and second magnetically attractable ring sleeve, and a first and second magnetically attractable bead member; the first spring, the first ring sleeve, the first bead body piece, the second spring, the second ring sleeve and the second bead body piece are correspondingly and sequentially arranged in the first sliding cavity and the second sliding cavity from outside to inside in sequence and cannot slide out, and the inner walls of the openings of the first sliding cavity and the second sliding cavity are arranged in a convergent shape which is contracted towards the openings; the first spring, the first ring sleeve, the second spring and the second ring sleeve are sequentially sleeved with the first rod head and the second rod head from outside to inside; the external magnetic element attracts the first and/or second ring sleeve to correspondingly compress the first and/or second spring and enables the first and/or second ball element to be correspondingly unlocked from the first and/or second annular arc-shaped cutting groove; when the external magnetic piece is withdrawn, the first spring and the second spring are reset to push the first ring sleeve and the second ring sleeve, so that the first ring sleeve and the second ring sleeve press the first bead piece and the second bead piece, and the first bead piece and/or the second bead piece correspondingly lock the first annular arc-shaped cutting groove and/or the second annular arc-shaped cutting groove.

Preferably, the inner walls of the openings of the first and second sliding cavities may be formed in a convergent shape of a curved surface or a slant surface converging toward the opening.

Preferably, the first and second damping heads are provided at the ends of the first and second club heads, respectively.

As an effective arrangement, the valve body forms a first passage from the inlet to the first outlet and a second passage from the inlet to the second outlet.

As an effective arrangement, the first and second passage locking mechanisms are detachably and airtightly locked at both sides of the valve body.

The invention also provides an oxygen inhalator, which utilizes an anti-misoperation airflow passage switching valve to switch the airflow passages, wherein the airflow rates of the first passage and the second passage are different, one of the first passage and the second passage is provided with an airflow regulating valve, and the other passage is a quantitative passage.

Furthermore, the first and second flow channels of the flow divider are used for dividing the flow, and the gas flow regulating valve is alternatively arranged on the first/second flow channel of the flow divider.

The invention has at least the following advantages:

1. when the first magnetic locking piece and the second magnetic locking piece of the first channel locking mechanism and the second channel locking mechanism are unlocked through the external magnetic piece, the channel switching mechanism can switch a first channel and a second channel, and after the external magnetic piece is removed, the first channel locking mechanism and the channel switching mechanism can be mutually locked to form a channel selected by the first channel and the second channel;

2. the anti-misoperation air flow passage switching valve is particularly suitable for being used as a switching valve of an oxygen inhaler, can switch the passage of oxygen air flow under the assistance of a flow divider, so that the air flow can be adjusted to be quantitative oxygen supply or can be adjusted to be two passages, and can keep a required target passage after being set by medical personnel, and a patient cannot adjust the air flow rate by himself; and under the condition that medical staff are equipped with external magnetic pieces, the switching of the first passage and the second passage can be stably and quickly realized, and the treatment of a patient in an emergency situation is not influenced.

3. The device completes the functions of airflow quantification and airflow adjustable switching through a pure mechanical structure, and has no structures such as an electromagnetic valve and the like, so that no current is required to intervene, thereby effectively avoiding the adverse effect of water vapor generated by a humidifying bottle of the oxygen inhalator on electric components and parts, and avoiding the danger of water vapor conduction.

Drawings

FIG. 1 is a schematic view of a first via forming via according to embodiment 1 of the present invention;

FIG. 2 is a schematic sectional view showing an unlocking process in embodiment 1 of the present invention;

FIG. 3 is a schematic view of a second passage forming passage in embodiment 1 of the present invention;

FIG. 4 is a schematic view of the application of embodiment 1 of the present invention to an oxygen inhaler;

fig. 5 is a schematic sectional view showing an unlocked state of the first passage locking mechanism and the second passage locking mechanism in embodiment 2 of the present invention;

FIG. 6 is a schematic view of a first via forming via according to embodiment 2 of the present invention;

FIG. 7 is a schematic view of a second passage forming passage in embodiment 2 of the present invention;

fig. 8 is an exploded view of a part of components of a path switching mechanism according to embodiment 2 of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, an anti-misoperation air flow passage switching valve includes a valve body 3 having first and second passages, and the valve body 3 is provided with a passage switching mechanism 4 and first and second passage locking mechanisms (1, 2).

The valve body 3 is in a strip column shape as a whole, an inlet A, a first outlet B1 and a second outlet B2 of the valve body are all arranged on the side wall, and a passage switching channel 31 which is communicated with the inlet A, the first outlet B1 and the second outlet B2 is arranged in the center of the valve body 3; the passage switching mechanism 4 operates the lever body 41 to move the passage airtight stopper 42 along the passage switching passage 31 in the valve body 3. By adopting the passage airtight gasket as the passage airtight blocking member 42 to separate the first passage from the second passage, the passage selected from the first passage or the second passage can be formed after the airflow enters the passage switching passage 31 through the inlet a; the two ends of the operating rod body 41 are correspondingly separated into a first rod head (411) and a second rod head (412) through a first annular arc-shaped cutting groove (413) and a second annular arc-shaped cutting groove (414); the operating rod 41 extends outwards to the side wall of the valve body 3 to form a switching swing rod 43, and a switching port airtight stopper 44 for airtight sealing of the switching port of the valve body 3 is arranged at the middle section of the switching swing rod 43.

The first and second passage locking mechanisms (1,2) are symmetrically arranged at the left and right sides of the valve body 3, and the first passage locking mechanism 1 at the left side comprises a first locking mechanism body 10 with a first sliding cavity 101 and a first magnetic locking piece; the first magnetic locking piece, namely the first spring 11, the first ring sleeve 12 and the two first bead pieces 13, is arranged in the first sliding cavity 101 from outside to inside in sequence, the inner wall of the opening of the first sliding cavity 101 is arranged in an arc surface shape converging to the opening, the first rod head 411 extends into the opening of the first sliding cavity 101 and blocks the opening of the first sliding cavity 101, the inner edge of the first annular arc-shaped cutting groove 413 is flush with the inner wall of the opening of the first sliding cavity 101, the first spring 11 and the first ring sleeve 12 are sleeved on the first rod head 411, and the two first bead pieces 13 are positioned at two sides of the first rod head, so that the first spring 11, the first ring sleeve 12 and the first bead pieces 13 are prevented from sliding out of the opening of the first sliding cavity 101; correspondingly, the second passage locking mechanism 2 on the right side comprises a second locking mechanism body 20 with a second sliding cavity 201 and a second magnetic locking piece; the second magnetic locking member, i.e. the second spring 21, the second collar 22, and the two second bead members 23, are sequentially disposed in the second sliding cavity 201 from outside to inside, and the inner wall of the opening of the second sliding cavity 201 is disposed in an arc shape converging toward the opening, the second rod head 412 extends into the opening of the second sliding cavity 201 and plugs the opening of the second sliding cavity 201, and the inner edge of the second annular arc-shaped groove 414 is flush with the inner wall of the opening of the second sliding cavity 201, the second spring 21 and the second collar 22 are sleeved on the second rod head 412, and the two second bead members 23 are located on two sides of the second rod head 412, so that the second spring 21, the second collar 22, and the second bead members 23 are prevented from sliding out of the opening of the second sliding cavity 201. The first and second ring sleeves (12,22) and the first and second bead pieces (13,23) are magnetically attractable, and preferably, the surfaces of the first and second ring sleeves and the first and second bead pieces can be plated with antirust coatings to achieve antirust effects; in addition, it is preferable that a magnetic core having magnetism is provided inside the first and second bead members (13,23) to enhance the magnetic attraction effect of the external magnetic member to the first and second loop members (12, 22).

As shown in fig. 1-2, taking the original first passage locking mechanism 1 in the locked state and needing to unlock the first passage locking mechanism 1 as an example, an external magnetic member in the shape of a ring is placed outside the first locking mechanism body 10 as an unlocking device, and due to the magnetic force, the first ring sleeve 12 and the first ball member 13 are attracted, and correspondingly move outwards and compress the first spring 11, so that the first ball member 13 is unlocked from the first annular arc-shaped slot 413, and at the same time, since the second annular arc-shaped slot 414 is located outside the opening of the second sliding cavity 201 and is not locked by the second magnetic locking member, the operating rod 41 is in a freely adjustable state;

as shown in fig. 2-3, when it is required to switch to the second passage to form a through state, the switching swing rod 43 is adjusted to move along the switching port of the valve body 3 to the right side, so that the first rod head 411 moves towards the second sliding chamber 201 until the first annular arc-shaped slot 413 is located outside the first sliding chamber 101; meanwhile, the second rod head 412 slides along the opening of the second sliding chamber 201 until the second annular arc-shaped cutting groove 414 is positioned in the second sliding chamber 201, and since the inner wall of the opening of the second sliding chamber 201 is in an arc surface shape converging to the opening, and the second spring 21 keeps pushing and moving the second ring sleeve 22, so that the second ring sleeve 22 presses the second ball element 23, the second ball element 23 slides along the inner wall of the opening of the second sliding chamber 201 and is clamped with the second annular arc-shaped cutting groove 414, so that the operating rod body 41 is locked; at this time, the operation rod 41 drives the passage airtight blocking member 42 to move to the right side, so that the inlet a and the second outlet B2 form a second passage, and at this time, the first outlet B1 is closed by the passage airtight blocking member 42, and cannot form a first passage; the first and second rod heads (411,412) are maintained and correspondingly erected at the openings of the first and second sliding cavities (101,201), so that the whole operation rod body 41 is maintained stable in the adjusting process; preferably, the first spring (11) and the second spring (21) are arranged to reset and push the first ring sleeve (12) and the second ring sleeve (22) so that the distance depth X between the first ring sleeve (12) and the outer side wall of the first sliding cavity (101) and the second ring sleeve (22) corresponding to the outer side wall of the first sliding cavity (101) and the outer side wall of the second sliding cavity (201) is set to be 1.5-2.5cm under the condition that the first bead piece (13) and the second bead piece (23) are correspondingly attached to the inner side wall of the opening of the first sliding cavity and the second sliding cavity (101,201), and when neodymium iron boron magnet is used as the material of the external magnetic piece, the first ring sleeve (12) and the second ring sleeve (12,22) can be attracted to compress the first spring (11) and the second spring (21) correspondingly only by the neodymium iron boron magnet, and the first bead piece (13) and the second bead piece (23) are attracted by the neodymium iron boron magnet at the same time, so that the first channel locking mechanism (1,2) is unlocked; the common magnet with lower magnetism is difficult to attract the first and second ring sleeves (12,22) to correspondingly compress the first and second springs (11,21), so that the first and second ball members (13,23) are correspondingly locked with the first and second annular arc-shaped cutting grooves (413,414), and the possibility of the switching valve being unlocked by mistake is further reduced;

similarly, as shown in fig. 1-2, when the toggle switching swing link 43 moves to the left along the switching port of the valve body 3 in the unlocking state, the second rod head 412 can correspondingly move towards the first sliding chamber 101 until the second annular arc-shaped slot 414 is located outside the second sliding chamber 201; at the same time, the first rod head 411 slides along the opening of the first sliding chamber 101 until the first annular arc-shaped slot 413 is positioned in the first sliding chamber 101, and at this time, the first ball piece 13 is engaged with the first annular arc-shaped slot 413, and the first passage locking mechanism is in a locking state; at the same time, the operation rod 41 drives the passage airtight blocking member 42 to move to the left side, so that the inlet a and the first outlet B1 form a first passage; at this time, the second outlet B2 is closed by the passage airtight block 42, and a second passage cannot be formed;

as shown in fig. 1, taking as an example that the switching swing rod 43 is shifted to move to the left along the switching port of the valve body 3 to form a first passage, the second spring 21 is reset correspondingly under the condition that the external magnetic member is withdrawn, and the second ring sleeve 22 pushes the second ball member 23 to move to the opening of the second sliding chamber 201 correspondingly; at this time, since the second annular arc-shaped cutting groove 414 is located outside the second sliding chamber 201, the two second ball members 23 are pushed by the second collar 22 to be closely attached to the inner wall of the opening of the second sliding chamber 201 and the second rod head 412, and the second rod head 412 still keeps the opening of the second sliding chamber 201 closed, so that the second spring 21, the second collar 22, and the second ball members 23 still remain in the second sliding chamber 201.

As shown in fig. 4, when the anti-misoperation air flow channel switching valve is used, the inlet a can be connected to an external air supply port through a pipeline or a connector, the first outlet B1 can be connected to a first pipeline provided with an air flow regulating valve 51, and the second outlet B2 can be connected to a second pipeline without a regulating valve for conveying respectively, so that the effect of switching an adjustable air flow channel and a quantitative air flow channel is achieved; in addition, when the operator does not have the external magnetic member, the switching valve cannot be unlocked, so that the occurrence of misoperation is avoided.

The invention also provides the application of the anti-misoperation air flow passage switching valve in the regulation of oxygen supply of the central oxygen supply system to the oxygen inhalator. The anti-misoperation air flow channel switching valve can be installed in a commercially available float oxygen inhaler (such as a Danwei XY-02A float oxygen inhaler) to provide quantitative oxygen supply/adjustable oxygen supply for preventing mistaken touch for patients.

As shown in fig. 1 to 3, the first outlet B1 of the valve body 3 is provided with a smaller diameter than the second outlet B2, so that when the first passage and the second passage are switched and selected, the flow rate of oxygen flowing out through the first passage per unit time is smaller than that of oxygen flowing out through the second passage. As shown in fig. 4, a flow divider 50 is connected to the first and second outlets B2, and the first split inlet C1 and the second split inlet C2 of the flow divider 50 are separated from each other by a partition 52 and meet each other at the outlet of the flow divider 50, i.e., the first split inlet C1 forms a first flow path to the outlet of the flow divider 50 and the second split inlet C2 forms a second flow path to the outlet of the flow divider 50.

Connecting the first branched inlet C1 and the first outlet B1 to each other, so that the oxygen in the first passage can flow out through the first flow channel; the second split inlet C2 and the second outlet B2 are connected to each other, so that the oxygen in the second path can flow out through the second flow path, and an airflow control valve 51 for controlling the flow rate of the airflow is provided in the second flow path.

As shown in fig. 4, the connector 61 of the oxygen inhalator is plugged into the oxygen supply outlet of each sickbed terminal of the central oxygen supply system as the total oxygen inlet D1, and the outlet D2 of the oxygen inhalator is connected to the inlet a of the anti-misoperation airflow passage switching valve. When quantitative oxygen supply is needed, the oxygen supply device can be switched to the first passage; and when the adjustable oxygen supply is needed, the second passage is switched. Furthermore, the aperture of the first outlet B1 of the switching valve is adjusted to make the oxygen flow out through the first passage with a constant flow rate (set according to the actual needs of the patient, such as 1.2L/min for children patients and 1.8L/min for adults patients) with an oxygen supply rate not exceeding 2L/min. Moreover, since the airflow control valve 51 is located at the rear stage of the switching valve, when switching to the first passage, oxygen flows out to the first flow path through the first passage, and no change in the amount of oxygen supplied occurs regardless of the adjustment of the airflow control valve 51; in addition, under the condition that the patient does not have an external magnetic piece, the first passage locking mechanism 1 and the passage switching mechanism 4 cannot be unlocked, so that the stability of the quantitative oxygen supply process is maintained; since the floating oxygen inhaler is already provided with the floating oxygen flow indicator 62, the current oxygen flow is indicated by the indicator bead 621 in fig. 4. When the flow flows out of the first channel through the first passage, and after the patient adjusts the air flow regulating valve 51, the patient is informed of the inquiry of the medical staff when the oxygen supply amount is not obviously changed correspondingly, and at the moment, the medical staff can conveniently popularize related medical instructions to the patient; of course, when other commercially available oxygen inhalation devices without an oxygen flow indicator (e.g., a disposable medical vaporizer) are used, the above-mentioned quantitative oxygen supply is not affected.

When the adjustable oxygen supply is needed, the oxygen is switched to the second passage, and at this time, the oxygen flows out from the outlet of the flow divider 50 through the second passage, so that the gas flow regulating valve 51 on the second flow passage can be correspondingly adjusted to the needed oxygen supply amount according to the needs, so as to deal with partial emergency situations. Moreover, under the condition of having the external magnetic member (especially, the external magnetic member is set as a setting scheme that the ring-shaped ring is carried by medical care personnel), the first passage locking mechanism 1 and the passage switching mechanism 4 can be unlocked quickly, and the switching of the first passage to the second passage can be completed, so that the operation process is convenient, quick and reliable.

Example 2

As an improvement, as shown in fig. 5-8, in this embodiment, the operating rod 41' provided with the passage switching mechanism 4' is formed by correspondingly combining a first rod and a second rod, specifically, the base of the first rod is provided with a first rod base 491' and a switching swing rod 43', the middle section of the switching swing rod 43' is provided with a switching port airtight stopper 44 ' of the switching port of the airtight valve closing body 3', and the central hole 421' of the passage airtight stopper 42' is sleeved on the first rod locking post 493' and is pressed into the first rod base 491 '; the base of the second rod is correspondingly provided with a second rod base 492', and when the second rod locking column 494' and the first rod locking column 493' are locked with each other, the first rod base 491' and the second rod base 492' sandwich both sides of the passage airtight stopper 42', so that the fixing stability of the passage airtight stopper 42' can be effectively improved; moreover, the end of the first rod head 411 'corresponding to the first rod body is provided with a first shock absorption head 417', and correspondingly, the end of the second rod head 412 'corresponding to the second rod body is provided with a second shock absorption head 418';

in addition, the first annular arc cutting groove arranged on the first rod body comprises a first inner annular arc cutting groove 413 'and a first outer annular arc cutting groove 415'; and the second annular arc-cutting slot provided on the second rod body comprises a second inner annular arc-cutting slot 414 'and a second outer annular arc-cutting slot 416'.

Combining the first and second rods to form an operating rod 41', replacing the operating rod 41 of embodiment 1, applying the operating rod to the switching valve of embodiment 1, and correspondingly directing the first and second rods to the first and second channel locking mechanisms (1',2'), as shown in fig. 5-7, when the first rod head 411' correspondingly extends into the deepest position of the first sliding chamber 101', the inner edge of the first inner annular arc-shaped slot 413' is flush with the inner wall of the opening of the first sliding chamber 101', and the inner edge of the second outer annular arc-shaped slot 416' is flush with the inner wall of the opening of the second sliding chamber 102 '; when the second rod head 412 'correspondingly extends into the deepest part of the second sliding chamber 102', the inner edge of the second inner annular arc cutting groove 414 'is flush with the inner wall of the opening of the second sliding chamber 102', and the inner edge of the first outer annular arc cutting groove 415 'is flush with the inner wall of the opening of the first sliding chamber 101'.

As shown in fig. 6, when the arrangement of the present embodiment is adopted, when the first path is formed, the first rod head 411 'extends to the deepest position in the first sliding chamber 101', and because the inner edge of the first inner annular arc-shaped slot 413 'is flush with the inner wall of the opening of the first sliding chamber 101', the first spring 11 'pushes the first ring sleeve 12', so that the first ring sleeve 12 'pushes the first ball member to be engaged with the first inner annular arc-shaped slot 413', and the operating rod 41 'is locked by the first path locking mechanism 1'; meanwhile, the inner edge of the second outer annular arc-shaped slot 416 'is flush with the inner wall of the opening of the second sliding chamber 102', so that the second spring 21 'pushes the second ring 22', and the second ring 22 'pushes the second ball member, until the second ball member and the second outer annular arc-shaped slot 416' are mutually clamped, and the operating rod 41 'is simultaneously locked by the second passage locking mechanism 2'. That is, the inlet a 'and the first outlet B1' form a first passage, while the second outlet B2 'is closed by the passage-tight barrier 42' and cannot form a second passage.

In summary, compared to the method of embodiment 1 that only one external magnetic member 5 needs to be unlocked on one side, in this embodiment, when the unlocked state is recovered, two external magnetic members 5 'need to be used, and the first and second collars (12',22') need to be attracted to the left and right sides and correspondingly slide along the first and second rod heads (411',412') and correspondingly compress the first and second springs (11',21'), so that the first and second ball members are attracted to the two external magnetic members 5' on the left and right sides, and thus the adjustable state can be achieved, as shown in fig. 5, in which the operating rod 41 'can freely slide along the passage switching passage 31'. Therefore, the effect of preventing the erroneous operation can be further improved as compared with embodiment 1.

Of course, in the unlocked state, the switching swing link 43 'is shifted to shift the second rod head 412' to extend into the deepest position of the second sliding cavity 102', at this time, the inner edge of the second inner annular arc-shaped slot 414' is flush with the inner wall of the opening of the second sliding cavity 102', at the same time, the inner edge of the first outer annular arc-shaped slot 415' is flush with the inner wall of the opening of the first sliding cavity 101', the outer magnetic members 5' at the left and right ends are removed, the first and second springs (11',21') are reset to correspondingly push the first and second collars (12',22'), and the first and second bead members are pushed to the inner wall of the opening of the sliding cavity by the first and second collars and slide along the inner wall of the arc-surface shape converging to the opening, until the first bead member engages with the first outer annular arc-shaped slot 415', and the second bead member engages with the second inner annular arc-shaped slot 414', at this time, the state of forming the second passage as shown in fig. 7 is completed, that is, the inlet a 'and the second outlet B2' form a second passage, and the first outlet B1 'is closed by the passage-tight barrier 42' and cannot form a first passage.

In addition, in the process of switching the air flow passage, when the tail ends of the first rod body and the second rod body correspondingly press the bottoms of the first sliding cavity and the second sliding cavity, the arrangement of the first damping head (417',418') and the second damping head can correspondingly play a certain damping role, and the collision of the tail ends of the first rod body and the second rod body to the first sliding cavity and the second sliding cavity is effectively reduced.

In addition, when the switching valve is connected to the oxygen humidifying bottle 622, since the humidifying bottle 622 can enter the switching valve after humidifying oxygen, in order to avoid the influence of the humidified oxygen on the first and second passage locking mechanisms (1',2'), a first and second locking mechanism blocking piece (321',322') can be arranged; the first and second locking mechanism retaining pieces (321',322') are correspondingly sleeved on the first and second rod bodies, and the first and second locking mechanism retaining pieces (321',322') seal the openings of the first and second sliding cavities, so that humidified oxygen can be effectively reduced from entering the first and second sliding cavities.

The embodiment also improves the structure of the switching valve, the two ends of the valve body 3 'are provided with threaded interfaces, and the joints of the first locking mechanism body (10',20') and the second locking mechanism body (10',20') are provided with structures matched with the threaded interfaces of the valve body 3'. Through the arrangement, the first and second passage locking mechanisms (1',2') can be detachably locked with the valve body 3', and the air flow can be prevented from overflowing from the interface between the valve body 3' and the first and second passage locking mechanisms (1', 2').

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the technical solutions of the present invention, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced with equivalents, and any modifications or partial replacements without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.

Claims

1. The utility model provides a prevent maloperation's air flow path diverter valve, includes the valve body that has first, second route, and the valve body is provided with route switching mechanism, first, second route locking mechanical system, its characterized in that: when the first and second magnetic locking pieces of the first and second passage locking mechanisms are unlocked through the external magnetic piece, the passage switching mechanism can switch the first/second passages; after the passage switching mechanism selects the first passage or the second passage, the external magnetic part is withdrawn, and the first passage locking mechanism and/or the second passage locking mechanism and the passage switching mechanism are locked with each other to form a passage selected from the first passage or the second passage;

the passage switching mechanism is provided with a passage airtight stopper for separating the first passage from the second passage, and the passage switching mechanism drives the passage airtight stopper to move along a passage switching channel in the valve body through an operating rod body until a passage selected from the first passage and the second passage is formed;

the two ends of the operating rod body are correspondingly separated into a first rod head and a second rod head through a first annular arc-shaped cutting groove and a second annular arc-shaped cutting groove; the first and second passage locking mechanisms are symmetrically arranged on the left and right sides of the valve body, and each passage locking mechanism comprises a locking mechanism body with a sliding cavity; the first rod head pair extends into the first sliding cavity until the first annular arc-shaped cutting groove is positioned in the first sliding cavity, and the first annular arc-shaped cutting groove is locked by the first magnetic locking piece in the first sliding cavity; the second rod head pair extends into the second sliding cavity until the second annular arc-shaped cutting groove is positioned in the second sliding cavity, and the second annular arc-shaped cutting groove is locked by a second magnetic locking piece in the second sliding cavity.

2. The valve of claim 1, wherein the lever body extends outwardly from the sidewall of the valve body to form a switching rocker, and a switching port air-tight stopper is disposed at a middle section of the switching rocker for hermetically sealing the switching port of the valve body.

3. The valve of claim 1, wherein when the first rod head is extended to the deepest position in the first sliding cavity, the inner edge of the first annular arc-shaped cutting groove is flush with the inner wall of the opening of the first sliding cavity; when the second pole head can correspondingly stretch into the deepest part of the second sliding cavity, the inner edge of the second annular arc-shaped cutting groove is flush with the inner wall of the opening of the second sliding cavity, and the two ends of the operating pole body are correspondingly erected on the openings of the first sliding cavity and the second sliding cavity.

4. The valve of claim 3, wherein the first annular arcuate slot comprises a first inner annular arcuate slot and a first outer annular arcuate slot, and the second annular arcuate slot comprises a second inner annular arcuate slot and a second outer annular arcuate slot; when the first rod head correspondingly extends into the deepest part of the first sliding cavity, the inner edge of the first inner annular arc-shaped cutting groove is flush with the inner wall of the opening of the first sliding cavity, and the inner edge of the second outer annular arc-shaped cutting groove is flush with the inner wall of the opening of the second sliding cavity; when the second pole head correspondingly stretches into the deepest part of the second sliding cavity, the inner edge of the second inner annular arc-shaped groove is flush with the inner wall of the opening of the second sliding cavity, and the inner edge of the first outer annular arc-shaped groove is flush with the inner wall of the opening of the first sliding cavity.

5. The valve of any of claims 1-4, wherein the first and second magnetic locking members comprise first and second springs, first and second magnetically attractable collars, first and second magnetically attractable bead members, respectively; the first spring, the first ring sleeve, the first bead body piece, the second spring, the second ring sleeve and the second bead body piece are correspondingly and sequentially arranged in the first sliding cavity and the second sliding cavity from outside to inside in sequence and cannot slide out, and the inner walls of the openings of the first sliding cavity and the second sliding cavity are arranged in a convergent shape which is contracted towards the openings; the first spring, the first ring sleeve, the second spring and the second ring sleeve are sequentially sleeved with the first rod head and the second rod head from outside to inside; the external magnetic element attracts the first and/or second ring sleeve to correspondingly compress the first and/or second spring and enables the first and/or second ball element to be correspondingly unlocked from the first and/or second annular arc-shaped cutting groove; when the external magnetic piece is withdrawn, the first spring and the second spring are reset to push the first ring sleeve and the second ring sleeve, so that the first ring sleeve and the second ring sleeve press the first bead piece and the second bead piece, and the first bead piece and/or the second bead piece correspondingly lock the first annular arc-shaped cutting groove and/or the second annular arc-shaped cutting groove.

6. The valve of any one of claims 1 to 4, wherein the valve body forms a first path from the inlet to the first outlet and a second path from the inlet to the second outlet.

7. An anti-misoperation air flow path switching valve according to any one of claims 1 to 4, wherein the first and second path locking mechanisms are detachably and airtightly locked at both sides of the valve body.

8. An oxygen flow rate regulating device comprising the gas flow path switching valve for preventing erroneous operation as claimed in any one of claims 1 to 7, characterized in that: the first and second passages have different flow rates, one of the first and second passages is provided with a flow rate regulating valve, and the other passage is a quantitative passage.

9. An oxygen flow regulating device according to claim 8, characterized in that: the first and second flow channels are divided by the first and second flow channels of the flow divider, and the gas flow regulating valve is selectively arranged on the first/second flow channel of the flow divider.